CN1109204C - Method and device for assembling hydraulic shock absorber - Google Patents

Abstract

Translated fromChinese

在油压缓冲器1的组装装置10中，用气体封入头31保持油压缓冲器1的外筒2的上部，用真空头32的真空吸引力将临时封在油压缓冲器1上的密封构件6从外筒2的上端往上提，从气体封入头31的气体通路49将预定压力的气体封入油压缓冲器1内，用真空头32将密封构件6推压保持在内筒3上端的正规组装位置，将气体封入头31从外筒2上部向上方移动，用压紧装置33使外筒2的上端朝内径方向变形，将密封构件6安装到正规组装位置。

In the assembly device 10 of the oil shock absorber 1, the upper part of the outer cylinder 2 of the oil shock absorber 1 is held by the gas sealing head 31, and the seal temporarily sealed on the oil shock absorber 1 is sealed by the vacuum suction force of the vacuum head 32. The member 6 is lifted up from the upper end of the outer cylinder 2, and the gas at a predetermined pressure is sealed into the oil pressure buffer 1 through the gas passage 49 of the gas sealing head 31, and the sealing member 6 is pushed and held at the upper end of the inner cylinder 3 by the vacuum head 32. Move the gas sealing head 31 upward from the top of the outer cylinder 2, deform the upper end of the outer cylinder 2 toward the inner diameter direction with the pressing device 33, and install the sealing member 6 to the normal assembly position.

Description

Translated fromChinese

油压缓冲器的组装方法及装置Assembly method and device of oil pressure buffer

技术领域technical field

本发明涉及油压缓冲器的组装方法及装置。The invention relates to an assembly method and device of an oil pressure buffer.

背景技术Background technique

已有技术中，日本特开昭63-219931号公报(现有技术1)或日本特公昭61-16839号公报(现有技术2)揭示了油压缓冲器的组装方法，该方法是在油压缓冲器的内外筒间形成储油室和气体室，用密封构件密封住内外筒的上部。In the prior art, Japanese Patent Application Publication No. 63-219931 (Prior Art 1) or Japanese Patent Application Publication No. 61-16839 (Prior Art 2) discloses an assembly method of an oil pressure shock absorber. An oil storage chamber and a gas chamber are formed between the inner and outer cylinders of the shock absorber, and the upper parts of the inner and outer cylinders are sealed with sealing members.

上述现有技术1中，在油压缓冲器的外筒上部内周，留有间隙地组装入密封构件，把气体封入头供给的预定压力的气体，从外筒的上部内周与密封构件的间隙封入油压缓冲器，然后，使外筒的上部朝内径方向变形，将密封上述间隙的密封构件密封地固定住。In the above prior art 1, a sealing member is assembled with a gap in the upper inner periphery of the outer cylinder of the hydraulic shock absorber, and the gas of a predetermined pressure supplied by the gas sealing head is supplied from the upper inner periphery of the outer cylinder and the sealing member. The gap is sealed in the hydraulic shock absorber, and then the upper portion of the outer cylinder is deformed in the inner diameter direction to seal and fix the sealing member which seals the gap.

上述现有技术2中，把夹具插入密封构件(该密封构件将油压缓冲器外筒的上部内周正规地密封住)的密封唇内侧，用该夹具将密封唇朝半径方向扩开，形成气体导入通路，通过该气体导入通路将预定压力的气体封入油压缓冲器，气体封入后借助密封唇的复原力将上述封入的气体密封住。In the aboveprior art 2, a jig is inserted inside the sealing lip of the sealing member (the sealing member normally seals the upper inner circumference of the outer cylinder of the hydraulic shock absorber), and the jig is used to expand the sealing lip in the radial direction to form A gas introduction passage through which gas at a predetermined pressure is sealed into the hydraulic shock absorber, and after the gas is sealed, the sealed gas is sealed by the restoring force of the sealing lip.

但是，现有技术1中，在把油压缓冲器往组装装置运送的过程中，由于油压缓冲器的外筒上部内周与密封构件之间有间隙，异物可能会从该间隙侵入油压缓冲器内部，必须设置关闭该间隙的盖。However, in prior art 1, in the process of transporting the oil shock absorber to the assembly device, since there is a gap between the upper inner circumference of the outer cylinder of the oil shock absorber and the sealing member, foreign matter may invade the oil pressure from the gap. Inside the buffer, a cover must be provided to close this gap.

现有技术2中，在用夹具把正规地密封油压缓冲器的密封构件的密封唇扩开时，会损伤密封构件的密封唇，影响质量。Inprior art 2, when the sealing lip of the sealing member that normally seals the hydraulic shock absorber is expanded with a jig, the sealing lip of the sealing member is damaged and the quality is affected.

发明内容概要 SUMMARY OF THE INVENTION

本发明的目的是提供一种油压缓冲器的组装方法及装置，它是在油压缓冲器的组装过程中，能防止异物侵入油压缓冲器内部，不损伤密封构件，能简单地进行零件管理，并且能保证油压缓冲器的组装质量。The object of the present invention is to provide a method and device for assembling an oil shock absorber, which can prevent foreign matter from invading into the interior of the oil shock absorber during the assembly process of the oil shock absorber, without damaging the sealing components, and can easily install parts. Management, and can guarantee the assembly quality of the oil pressure buffer.

本发明的油压缓冲器组装方法，在油压缓冲器的内外筒之间，形成储油室和其上方的气体室，用密封构件密封内外筒的上部；其特征在于，In the method for assembling the oil pressure buffer of the present invention, an oil storage chamber and a gas chamber above it are formed between the inner and outer cylinders of the oil pressure buffer, and the upper part of the inner and outer cylinders is sealed with a sealing member; it is characterized in that,

将油充填到油压缓冲器内，在外筒的上部内周临时地封着密封构件，保持住该油压缓冲器的外筒的上部，采用具有气体封入头、真空头、压紧装置的组装装置，用气体封入头保持住该油压缓冲器的外筒的上部，用真空头的真空吸引力，把临时封在油压缓冲器上的密封构件从外筒的上端往上方提起，从气体封入头的通气路将预定压力的气体封入油压缓冲器内，用真空头将密封构件推压保持在内筒的上端正规组装位置，将气体封入头从外筒上部向上方移动，用压紧装置使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置；上述气体封入头保持住油压缓冲器的外筒的上部，并备有将气体封入油压缓冲器的通气路；上述真空头装在气体封入头内，备有对临时封在油压缓冲器上的密封构件的上部空间作用真空吸引力的真空吸引路，并且在外筒内将密封构件推压到内筒上端的正规组装位置；上述压紧装置配置在油压缓冲器的外部，使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置。Fill oil into the oil pressure buffer, temporarily seal the sealing member on the inner periphery of the upper part of the outer cylinder, hold the upper part of the outer cylinder of the oil pressure buffer, and use an assembly with a gas sealing head, a vacuum head, and a pressing device The device uses the gas sealing head to hold the upper part of the outer cylinder of the oil pressure buffer, and uses the vacuum suction force of the vacuum head to lift the sealing member temporarily sealed on the oil pressure buffer from the upper end of the outer cylinder upwards, from the gas The air path of the sealing head seals the gas with a predetermined pressure into the oil pressure buffer, uses the vacuum head to push the sealing member to maintain the normal assembly position at the upper end of the inner cylinder, moves the gas sealing head upward from the upper part of the outer cylinder, and presses it The device deforms the upper end of the outer cylinder in the direction of the inner diameter, and installs the sealing member to the normal assembly position; the above-mentioned gas sealing head holds the upper part of the outer cylinder of the oil shock absorber, and is equipped with a ventilation path for sealing gas into the oil shock absorber The above-mentioned vacuum head is installed in the gas sealing head, and is provided with a vacuum suction path acting on the upper space of the sealing member temporarily sealed on the oil pressure buffer, and pushes the sealing member to the upper end of the inner cylinder in the outer cylinder The normal assembly position; the above-mentioned pressing device is arranged outside the oil pressure buffer, so that the upper end of the outer cylinder is deformed in the direction of the inner diameter, and the sealing member is installed to the normal assembly position.

另外，本发明的油压缓冲器组装装置，在油压缓冲器的内外筒之间，形成储油室和其上方的气体室，用密封构件密封内外筒的上部；其特征在于，In addition, the hydraulic shock absorber assembly device of the present invention forms an oil storage chamber and a gas chamber above it between the inner and outer cylinders of the hydraulic shock absorber, and seals the upper part of the inner and outer cylinders with a sealing member; it is characterized in that,

将油充填到油压缓冲器内，在外筒的上部内周临时地封着密封构件，保持住该油压缓冲器的外筒的上部，同时，具有气体封入头、真空头和压紧装置，用气体封入头保持住油压缓冲器的外筒上部，用真空头的真空吸引力，把临时封在油压缓冲器上的密封构件从外筒的上端往上方提起，从气体封入头的通气路将预定压力的气体封入油压缓冲器内，用真空头将密封构件推压保持在内筒的上端正规组装位置，将气体封入头从外筒上部向上方移动，用压紧装置使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置；上述气体封入头备有将气体封入油压缓冲器的通气路；上述真空头装在气体封入头内，备有对临时封在油压缓冲器上的密封构件的上部空间作用真空吸引力的真空吸引路，并且在外筒内将密封构件推压到内筒上端的正规组装位置；上述压紧装置配置在油压缓冲器的外部，使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置。Fill oil into the oil pressure buffer, temporarily seal the sealing member on the inner periphery of the upper part of the outer cylinder, and keep the upper part of the outer cylinder of the oil pressure buffer. At the same time, it has a gas sealing head, a vacuum head and a pressing device, Use the gas filling head to hold the upper part of the outer cylinder of the oil pressure buffer, and use the vacuum suction of the vacuum head to lift the sealing member temporarily sealed on the oil pressure buffer from the upper end of the outer cylinder upwards, and ventilate from the gas filling head. Seal the gas with a predetermined pressure into the oil pressure buffer, use the vacuum head to push the sealing member to maintain the normal assembly position at the upper end of the inner cylinder, move the gas sealing head upward from the upper part of the outer cylinder, and use the pressing device to make the outer cylinder The upper end of the upper end is deformed in the direction of the inner diameter, and the sealing member is installed in the normal assembly position; the above-mentioned gas sealing head is equipped with a ventilation path for sealing gas into the oil pressure buffer; the above-mentioned vacuum head is installed in the gas sealing head, and there is a temporary seal The upper space of the sealing member on the oil pressure buffer acts as a vacuum suction path for vacuum suction, and pushes the sealing member to the regular assembly position at the upper end of the inner cylinder in the outer cylinder; the above-mentioned pressing device is arranged outside the oil pressure buffer , deform the upper end of the outer cylinder toward the inner diameter direction, and install the sealing member to the normal assembly position.

附图简单说明Brief description of the drawings

图1是表示组装装置的模式图，(A)是正面图，(B)是侧面图。Fig. 1 is a schematic view showing an assembly device, (A) is a front view, and (B) is a side view.

图2是表示油压缓冲器的主要部分剖切正面图。Fig. 2 is a cutaway front view showing a main part of a hydraulic shock absorber.

图3是表示组装装置的油压缓冲器设置状态的断面图。Fig. 3 is a cross-sectional view showing an installed state of a hydraulic shock absorber of the assembly device.

图4是表示组装装置的压紧余量测定状态的断面图。Fig. 4 is a cross-sectional view showing a measurement state of a pressurization margin of the assembly device.

图5是表示组装装置的气体封入状态的断面图。Fig. 5 is a cross-sectional view showing a gas-encapsulated state of the assembly device.

图6是表示组装装置的压紧状态的断面图。Fig. 6 is a cross-sectional view showing a pressed state of the assembling device.

图7是表示组装装置的性能评价状态的断面图。Fig. 7 is a cross-sectional view showing a performance evaluation state of the assembly device.

实施发明的最佳形态The best form for carrying out the invention

图1的组装装置10是将气体封入油压缓冲器1并加以密封的。油压缓冲器1如图2所示，在有底筒状的外筒2内插入内筒3，在内筒3内插入可滑动的活塞杆4，在外筒2内的内筒3的上端、安装着杆导引件5、密封构件(油封)6、端板7，在用组装装置10组装完毕后这些杆导引件5、密封构件6、端板7，用外筒2的上端压紧部2A将它们保持住。这时，油压缓冲器1，以内筒3的内部作为油室，充满了油，在外筒2与内筒3之间，形成储油室和其上方的气体室，用上述密封构件6将外筒2和内筒3的上部密封住。油压缓冲器1中，在杆导引件5上穿通地设有回油通路8，在油压缓冲器1进行伸缩动作时，用密封构件6的密封唇刮落随着活塞杆4从内筒3的油室带出来的油，该刮落下的油可从回油通路8返回到外筒2与内筒3之间的储油室。The assembly device 10 of FIG. 1 seals the oil shock absorber 1 with gas. As shown in Figure 2, the oil pressure shock absorber 1 inserts aninner cylinder 3 into a bottomed cylindricalouter cylinder 2, inserts aslidable piston rod 4 into theinner cylinder 3, and inserts the upper end of theinner cylinder 3 in theouter cylinder 2,Rod guide 5, sealing member (oil seal) 6,end plate 7 are installed, theserod guide 5,sealing member 6,end plate 7 are pressed with the upper end ofouter cylinder 2 after assembling with assembly device 10Part 2A holds them. At this time, the hydraulic shock absorber 1 uses the inside of theinner cylinder 3 as an oil chamber, which is filled with oil. Between theouter cylinder 2 and theinner cylinder 3, an oil storage chamber and a gas chamber above it are formed. The tops of thebarrel 2 and theinner barrel 3 are sealed. In the hydraulic shock absorber 1, an oil return passage 8 is penetratingly provided on therod guide 5. When the hydraulic shock absorber 1 performs telescopic movement, the sealing lip of the sealingmember 6 scrapes off thepiston rod 4 from the inside. The scraped oil can be returned to the oil storage chamber between theouter cylinder 2 and theinner cylinder 3 from the oil return passage 8 .

组装装置10，在其立柱10A上具有油压缓冲器支承部11、气体封入部12和油压缓冲器性能评价部13。The assembly device 10 has a hydraulic damper support unit 11 , agas filling unit 12 , and a hydraulic damperperformance evaluation unit 13 on a column 10A thereof.

油压缓冲器支承部11具有夹持板22，该夹持板22可沿设在立柱10A前面的滑动导引件21上下移动，由夹持气缸23使该夹持板22升降，可将直立支承在夹持板22上的油压缓冲器1定位在气体封入作业位置，在该气体封入作业位置，外筒2的上部被封入气体封入部12。这时，油压缓冲器1中，虽然把杆导引件5压入固定在外筒2内，但是在外筒2的上部内周是临时封住密封构件6的状态(临时封住的密封构件6与外筒2的内周之间虽然没有异物能侵入的间隙，但是在外力作用下密封构件6可相对于外筒2滑动)外筒2的上端压紧部2A尚未加工。The oil shock absorber supporting part 11 has a clamping plate 22, which can move up and down along the slide guide 21 provided in front of the column 10A, and the clamping plate 22 can be lifted up and down by the clamping cylinder 23, so that the upright The hydraulic shock absorber 1 supported by the clamping plate 22 is positioned at the gas filling operation position, and the upper part of theouter cylinder 2 is sealed in thegas sealing part 12 at the gas filling operation position. At this time, in the hydraulic shock absorber 1, although therod guide 5 is press-fitted and fixed in theouter cylinder 2, the upper inner periphery of theouter cylinder 2 is in a state of temporarily sealing the sealing member 6 (the temporarily sealedsealing member 6 Although there is no gap between theouter cylinder 2 and the inner circumference of theouter cylinder 2, thesealing member 6 can slide relative to theouter cylinder 2 under the action of an external force) The upperend pressing part 2A of theouter cylinder 2 has not been processed.

气体封入部12具有气体封入头31、真空头32和压紧装置33。即，气体封入部12具有升降板35，该升降板35可沿着设置在立柱10A前面的滑动导引件34上下移动，可由升降气缸36使该升降板35升降，在升降板35上垂吊着上述的真空头32，在真空头32的周围，安装着上述气体封入头31。气体封入部12是在立柱10A的前面固定着压紧装置33的压紧台架37，压紧台架37内配置着气体封入头31、真空头32。Thegas filling unit 12 has agas filling head 31 , avacuum head 32 and apressing device 33 . That is, thegas enclosing part 12 has alifting plate 35 that can move up and down along the sliding guide 34 provided in front of the column 10A, and can be lifted and lowered by the lifting cylinder 36, and hangs from thelifting plate 35. Next to the above-mentionedvacuum head 32, the above-mentionedgas sealing head 31 is installed around thevacuum head 32. Thegas sealing part 12 is apressing stand 37 on which apressing device 33 is fixed in front of the column 10A, and agas filling head 31 and avacuum head 32 are disposed in thepressing stand 37 .

气体封入头31具有外装气缸41，该外装气缸41气密地安装在真空头32(该真空头32垂吊在被升降气缸36升降的升降板35上)的后述内装气缸51的周围，由固定在真空头32的内装气缸51外周的活塞42，将外筒气缸41内分为上空气室43A和下空气室43B，把与升降板35一侧所设置的空压装置44相连的空压供给通路45装在外装气缸41内，使该空压供给通路45可切换地与上空气室43A和下空气室43B相连。在油压缓冲器支承部11把油压缓冲器1定位在气体封入作业位置、在真空头32如后所述地推压保持油压缓冲器1的端板7的状态下，气体封入头31将空气压供给下空气室43B(上空气室43A向大气开放)，在真空头32周围向下方移动，由前端保持部31A保持油压缓冲器1的外筒2的上部。这时，气体封入头31，使前端保持部31A的内周的O圈46与外筒2的上部外周密接，并且，设在前端保持部31A内周的台阶部31B与外筒2的上端面相接，外筒2的内周面与气体封入头31的台阶部31B上方的内周面齐平(图4(B))。Thegas enclosing head 31 has anexternal cylinder 41 which is airtightly installed around a built-incylinder 51 described later of the vacuum head 32 (thevacuum head 32 is suspended on thelifting plate 35 lifted by the lifting cylinder 36), and Thepiston 42 fixed on the outer circumference of the built-incylinder 51 of thevacuum head 32 divides the interior of theouter cylinder 41 into anupper air chamber 43A and alower air chamber 43B, and connects theair pressure device 44 connected to thelifting plate 35 side. Thesupply passage 45 is installed in theexterior air cylinder 41 so that the airpressure supply passage 45 is switchably connected to theupper air chamber 43A and thelower air chamber 43B. In the state where the oil shock absorber 1 is positioned at the gas sealing operation position by the oil shock absorber support part 11 and theend plate 7 of the oil shock absorber 1 is pressed and held by thevacuum head 32 as described later, thegas sealing head 31 Air pressure is supplied tolower air chamber 43B (upper air chamber 43A is open to atmosphere), moves downward aroundvacuum head 32, and holds the upper portion ofouter tube 2 of hydraulic shock absorber 1 bytip holder 31A. At this time, in thegas sealing head 31, the O-ring 46 on the inner periphery of the frontend holding portion 31A is in close contact with the upper outer periphery of theouter cylinder 2, and thestepped portion 31B provided on the inner periphery of the frontend holding portion 31A is in close contact with the upper end surface of theouter cylinder 2. In contact, the inner peripheral surface of theouter cylinder 2 is flush with the inner peripheral surface above thestep portion 31B of the gas sealing head 31 ( FIG. 4(B) ).

在垂吊地支承着真空头32的升降板35上，设有刻度盘式指示器等的高度计47(图4(A))，高度计47可测定相对于真空头32的气体封入头31的相对位置。在气体封入头31的前端保持部31A的台阶部31B与外筒2的上端面相接、真空头32的前端部推压保持着端板7的状态(图4(B))下，高度计47可测定外筒2的上端部相对于端板7的突出量、即外筒2的压紧余量H。On thelifting plate 35 that hangs and supports thevacuum head 32, an altimeter 47 ( FIG. 4(A)) such as a dial indicator is provided. Thealtimeter 47 can measure the relative position of thegas filling head 31 to thevacuum head 32. Location. In the state where thestep portion 31B of the frontend holding portion 31A of thegas sealing head 31 is in contact with the upper end surface of theouter cylinder 2, and the front end portion of thevacuum head 32 presses and holds the end plate 7 ( FIG. 4(B)), thealtimeter 47 The protrusion amount of the upper end portion of theouter cylinder 2 relative to theend plate 7, that is, the compression margin H of theouter cylinder 2 can be measured.

气体封入头31内设有气体通路49，该通路49与设在升降板35侧的气体供给装置48连接，这样，在真空头32如后所述地将密封构件6从外筒2的上端提到上方的状态下，气体封入头31把气体供给装置48供给的气体从气体通路49引到外筒的上部，再从杆导引件5上的回油路8封入外筒2与内筒3之间的气体室内。Agas passage 49 is provided in thegas encapsulation head 31, and thepassage 49 is connected to agas supply device 48 provided on thelifting plate 35 side, so that thevacuum head 32 lifts the sealingmember 6 from the upper end of theouter cylinder 2 as described later. In the upper state, thegas sealing head 31 guides the gas supplied by thegas supply device 48 from thegas passage 49 to the upper part of the outer cylinder, and then seals the gas into theouter cylinder 2 and theinner cylinder 3 from the oil return passage 8 on therod guide 5 between the gas chambers.

真空头32如前所述具有内装气缸51，该内装气缸51垂吊在被升降气缸36升降的升降板35上，将该内装气缸51气密地装在气体封入头31的外装气缸41内，并且，将后述夹紧装置77的外侧导引件77C气密地插入该内装气缸51的中空内径部。真空头32是真空吸引通路53(该真空吸引路53与设在升降板35侧的真空吸引装置52连接)装在内装气缸51内。真空头32用该真空吸引路53对临时密封在油压缓冲器1的外筒2上的密封构件6的上部空间施加真空吸引力，将密封构件6和端板7向上方吸引，将密封构件6从外筒2的上端吸引到上方、一直吸引到气体封入头31内周面的气体通路49的开放端上方，由气体封入头31对外筒2的上部供给气体。Thevacuum head 32 has a built-incylinder 51 as described above, and the built-incylinder 51 is suspended on thelifting plate 35 lifted by the lifting cylinder 36, and the built-incylinder 51 is airtightly installed in theouter cylinder 41 of thegas sealing head 31, Then, an outer guide 77C of aclamp device 77 described later is airtightly inserted into the hollow inner diameter portion of the built-incylinder 51 . Thevacuum head 32 is a vacuum suction passage 53 (thevacuum suction passage 53 is connected with thevacuum suction device 52 provided on thelifting plate 35 side) and is installed in the built-inair cylinder 51 . Thevacuum head 32 uses thevacuum suction path 53 to apply a vacuum suction force to the upper space of the sealingmember 6 temporarily sealed on theouter cylinder 2 of the hydraulic shock absorber 1, thereby sucking thesealing member 6 and theend plate 7 upward, and pulling the sealingmember 6. Suction upward from the upper end of theouter cylinder 2, until above the open end of thegas passage 49 on the inner peripheral surface of thegas sealing head 31, and the gas is supplied to the upper part of theouter cylinder 2 from thegas sealing head 31.

真空头32被升降气缸36如下所述地升降，(a)为了测定外筒2的压紧余量而推压保持端板7时下降；(b)为了把密封构件6提到气体封入头31内周面的气体通路49的开放端上方而先提升；(c)在把气体封入外筒2上部后，在外筒2的内部将密封构件6、端板7推压保持在内筒3的上端的正规组装位置时下降。Thevacuum head 32 is raised and lowered by the lifting cylinder 36 as follows, (a) it is lowered when theend plate 7 is pushed and held in order to measure the compression margin of theouter cylinder 2; (b) in order to lift thesealing member 6 to thegas sealing head 31 Lift first above the open end of thegas passage 49 on the inner peripheral surface; (c) after sealing the gas into the upper part of theouter cylinder 2, press and hold thesealing member 6 and theend plate 7 on the upper end of theinner cylinder 3 inside theouter cylinder 2 drop when in the normal assembled position.

压紧装置33，通过轴承、在固定于立柱10A前面的压紧台架37的上下支承部、支承着旋转体61。旋转体61与气体封入头31、真空头32同轴配置，由旋转马达62通过皮带驱动。61A是皮带轮。旋转体61通过轴承可旋转地支承沿圆周等间隔配置的3个辊63，在油压缓冲器1的外筒2的上端周围进行旋转。旋转体61具有被拨叉66上下滑动的凸轮构件64，上述拨叉66被凸轮升降气缸65上下摆动。使凸轮构件64的凸轮面64A与各辊63的销63A接合，借助凸轮构件64的上下移动，使各辊63从原位置相对于外筒2的上端进退。另外，使拨叉66绕着摆动支点67上下摆动，使前端的凸轮从动件66A与凸轮构件64外周的周向槽66B接合，可使凸轮构件64上下滑动。Thepressing device 33 supports the rotatingbody 61 via bearings at upper and lower support portions of thepressing stand 37 fixed to the front surface of the column 10A. The rotatingbody 61 is arranged coaxially with thegas sealing head 31 and thevacuum head 32 , and is driven by a rotating motor 62 through a belt. 61A is a pulley. The rotatingbody 61 rotatably supports threerollers 63 arranged at equal intervals along the circumference through bearings, and rotates around the upper end of theouter cylinder 2 of the hydraulic shock absorber 1 . The rotatingbody 61 has acam member 64 that is slid up and down by a shift fork 66 that is swung up and down by a cam lift cylinder 65 . Thecam surface 64A of thecam member 64 is engaged with thepin 63A of eachroller 63 , and eachroller 63 advances and retreats from the original position relative to the upper end of theouter cylinder 2 by vertical movement of thecam member 64 . Further, by vertically swinging the shift fork 66 about the swing fulcrum 67 , the cam follower 66A at the front end engages with thecircumferential groove 66B on the outer periphery of thecam member 64 , and thecam member 64 can slide up and down.

在使各辊63朝着面临外筒2上端面的位置前进、并且使旋转体61旋转的状态下，用上述的夹持气缸23使夹持板22上升，将油压缓冲器1位定在压紧作业位置，通过使外筒2的上端面碰在各辊63的辊面上，对外筒2的上端作用预定的压紧力，使外筒2的上端朝内径方向变形，形成上端压紧部2A，可将密封构件6、端板7安装在内筒3上端的正规组装位置。With eachroller 63 advancing toward the position facing the upper end surface of theouter cylinder 2 and rotating therotating body 61, the clamping plate 22 is raised by the above-mentioned clamping cylinder 23, and the hydraulic shock absorber 1 is positioned at the position. In the pressing operation position, by making the upper end surface of theouter cylinder 2 hit the roller surface of eachroller 63, a predetermined pressing force is applied to the upper end of theouter cylinder 2, so that the upper end of theouter cylinder 2 is deformed toward the inner diameter direction, forming an upper end compression. 2A, the sealingmember 6 and theend plate 7 can be installed at the regular assembly position on the upper end of theinner tube 3 .

油压缓冲器性能评价部13，具有可沿着设在立柱10A前面的滑动导引件71、71升降的升降头72，升降头72与被升降马达73驱动的曲柄装置74的连接杆75连接。升降头72具有自动夹紧装置77(杆保持装置)，该夹紧装置77设有荷重计76。将夹紧装置77的夹爪77A、内侧导引件77B、外侧导引件77C插入真空头32的内装气缸51的真空内径部，通过油压缓冲器1的密封构件6向外部延伸的活塞杆4的前端螺纹部上，螺纹接合地保持着夹爪77A的螺纹面。夹紧装置77借助内侧导引件77B和外侧导引件77C的共同作用，可以扩缩夹爪77A(图7(B))。这样，油压缓冲器性能评价部13，在油压缓冲器1的密封构件6被安装在正规组装位置的状态下，用升降马达73将夹紧装置77上下驱动，可测定油压缓冲器1的气体反作用力、衰减力等，进行性能评价。The hydraulic shock absorberperformance evaluation unit 13 has a liftinghead 72 that can be raised and lowered along the slide guides 71 and 71 arranged in front of the column 10A, and the liftinghead 72 is connected to the connecting rod 75 of the crank device 74 driven by the lifting motor 73 . The liftinghead 72 has an automatic clamping device 77 (rod holding device) provided with aload gauge 76 . The jaw 77A, the inner guide 77B, and the outer guide 77C of theclamping device 77 are inserted into the vacuum inner diameter part of the built-incylinder 51 of thevacuum head 32, and the piston rod extending outward through the sealingmember 6 of the hydraulic shock absorber 1 4, the threaded surface of the jaw 77A is held in a threaded manner. The clampingdevice 77 can expand and contract the jaw 77A by virtue of the cooperation of the inner guide 77B and the outer guide 77C ( FIG. 7(B) ). In this way, the hydraulic shock absorberperformance evaluation unit 13 drives theclamping device 77 up and down with the lift motor 73 in a state where theseal member 6 of the hydraulic shock absorber 1 is installed at the regular assembly position, and can measure the hydraulic shock absorber 1. The gas reaction force, attenuation force, etc. are used for performance evaluation.

下面，说明组装装置10的使用顺序。Next, the procedure for using the assembly device 10 will be described.

(1)油压缓冲器1的设置(图3)(1) Setting of hydraulic buffer 1 (Figure 3)

将油充填到油压缓冲器1内，在外筒2上部内周临时封住密封构件6，把临时安装着端板7的油压缓冲器1运到支承部11的夹持板22上，使其直立。由夹持气缸23使夹持板22上升，把油压缓冲器1的外筒2的上部插入气体封入部12，设置在气体封入作业位置。Fill the oil into the oil shock absorber 1, temporarily seal the sealingmember 6 on the inner periphery of the upper part of theouter cylinder 2, and transport the oil shock absorber 1 with theend plate 7 temporarily installed on the clamping plate 22 of the supporting part 11, so that its upright. The clamping plate 22 is raised by the clamping cylinder 23, and the upper part of theouter cylinder 2 of the hydraulic shock absorber 1 is inserted into thegas sealing part 12, and is set at the gas sealing operation position.

用升降气缸36使真空头32下降，用真空头32的前端部推压保持住油压缓冲器1的端板7。Thevacuum head 32 is lowered by the lift cylinder 36 , and theend plate 7 of the hydraulic shock absorber 1 is pressed and held by the front end of thevacuum head 32 .

将空气压供给气体封入头31的下空气室43B(上空气室43A向大气开放)，使气体封入头31在真空头32周围下降，用前端保持部31A保持住油压缓冲器1的外筒2的上部。这时，气体封入头31使前端保持部31A的内周与外筒2的上部外周密接，并且，使设在前端保持部31A内周的台阶部31B与外筒2的上端面相接，使外筒2的内周面与气体封入头31的台阶部31B上方的内周面齐平。The air pressure is supplied to thelower air chamber 43B of the gas sealing head 31 (theupper air chamber 43A is open to the atmosphere), thegas sealing head 31 is lowered around thevacuum head 32, and the outer cylinder of the hydraulic shock absorber 1 is held by the frontend holding portion 31A. The upper part of 2. At this time, thegas sealing head 31 makes the inner periphery of the frontend holding portion 31A closely contact with the upper outer periphery of theouter cylinder 2, and also makes the steppedportion 31B provided on the inner periphery of the frontend holding portion 31A contact the upper end surface of theouter cylinder 2, so that The inner peripheral surface of theouter cylinder 2 is flush with the inner peripheral surface above thestep portion 31B of thegas sealing head 31 .

(2)压紧余量测定(图4)(2) Determination of compression allowance (Figure 4)

在用支承部11的夹持板22、气体封入部12的气体封入头31、真空头32如上面(1)所述那样设置了油压缓冲器1的状态下，用高度计47测定外筒2的上端部相对于端板7的突出量、即外筒2的压紧余量H，确认该压紧余量H在预定值的范围内(判断)。In the state where the hydraulic shock absorber 1 is installed with the clamping plate 22 of the support part 11, thegas sealing head 31 of thegas sealing part 12, and thevacuum head 32 as described in (1) above, theouter cylinder 2 is measured with thealtimeter 47. The amount of protrusion of the upper end of the upper end of theouter tube 7 relative to theend plate 7, that is, the compression margin H of theouter cylinder 2, confirms that the compression margin H is within the range of a predetermined value (judgment).

如前所述，在气体封入头31的前端保持部31A的台阶部31B与外筒2的上端面相接、真空头32的前端部推压保持端板7的状态，高度计47测定外筒2的上端部相对于端板7突出的量、即外筒2的压紧余量H。As mentioned above, in the state where thestep portion 31B of the frontend holding portion 31A of thegas sealing head 31 is in contact with the upper end surface of theouter cylinder 2, and the front end of thevacuum head 32 presses and holds theend plate 7, thealtimeter 47 measures the state of theouter cylinder 2. The amount by which the upper end of the cylinder protrudes relative to theend plate 7, that is, the compression margin H of theouter cylinder 2.

(3)气体的封入(图5)(3) Encapsulation of gas (Fig. 5)

用升降气缸36使真空头32上升。其上升高度这样决定：由后述真空头32的真空吸引力吸上的密封构件6的下端，到达设在气体封入头31上的气体通路49的靠气体封入头31内周面的开放端高度的上方时，真空头32的前端部不与密封构件6干扰的高度。这时，由于持续从真空头32的空压供给路45往气体封入头31的下空气室43B进行空气压供给，所以，气体封入头31仍然保持着外筒2的上端。Vacuum head 32 is raised with lift cylinder 36 . Its rising height is determined like this: the lower end of the sealingmember 6 sucked by the vacuum suction force of thevacuum head 32 described later reaches the opening end height of thegas passage 49 on thegas sealing head 31 by the inner peripheral surface of thegas sealing head 31. Above, the height at which the front end portion of thevacuum head 32 does not interfere with the sealingmember 6 . At this time, since the air pressure supply from the airpressure supply path 45 of thevacuum head 32 to thelower air chamber 43B of thegas sealing head 31 is continued, the upper end of theouter cylinder 2 is still held by thegas sealing head 31 .

用真空头32的真空吸引路53，对临时封在油压缓冲器1的外筒2上的密封构件6的上部空间作用真空吸引力，将密封构件6和端板7往上方吸引，把密封构件6从外筒2上端的上方，吸引到气体封入头31内周面的气体通路49开放端的上方。Use thevacuum suction path 53 of thevacuum head 32 to apply a vacuum suction force to the upper space of the sealingmember 6 temporarily sealed on theouter cylinder 2 of the oil pressure buffer 1, to attract the sealingmember 6 and theend plate 7 upwards, and seal the sealingmember 6 upward. Themember 6 is sucked from above the upper end of theouter cylinder 2 to above the open end of thegas passage 49 on the inner peripheral surface of thegas sealing head 31 .

接着，用气体封入头31的气体通路49，将气体(氮气等高压气体)引到被气体封入头31的前端保持部31A保持着的外筒2的上部，再从杆导引件5上的回油路8封入外筒2与内筒3之间的气体室。用设在气体通路49等上的气体压力计等测定，当封入的气体压达到预定值时，停止其封入。Next, use thegas channel 49 of thegas sealing head 31 to introduce gas (high-pressure gas such as nitrogen) to the upper part of theouter cylinder 2 held by the frontend holding part 31A of thegas sealing head 31, and then from the upper part of therod guide 5 The oil return passage 8 is enclosed in the gas chamber between theouter cylinder 2 and theinner cylinder 3 . It is measured with a gas pressure gauge or the like provided on thegas passage 49, etc., and when the pressure of the gas to be sealed reaches a predetermined value, the sealing is stopped.

向外筒2上部封入气体后，用升降气缸36使真空头32下降，在外筒2的内部，将密封构件6、端板7推压保持在内筒3上端的正规组装位置。After the gas is sealed into the upper part of theouter cylinder 2, thevacuum head 32 is lowered by the lifting cylinder 36, and the sealingmember 6 and theend plate 7 are pressed and kept in the regular assembly position of the upper end of theinner cylinder 3 inside theouter cylinder 2.

另外，在该气体封入时，真空头32将密封构件6从外筒2的上端往上方提起，然后，将密封构件6压下到内筒3上端的正规组装位置，而密封构件6的密封唇仅仅在活塞杆4的外周面滑接，不会造成损伤。In addition, when the gas is sealed, thevacuum head 32 lifts the sealingmember 6 upward from the upper end of theouter cylinder 2, and then presses the sealingmember 6 to the regular assembly position at the upper end of theinner cylinder 3, and the sealing lip of the sealingmember 6 Only sliding on the outer peripheral surface of thepiston rod 4 will not cause damage.

(4)油压缓冲器1的压紧加工(图6)(4) Compression processing of hydraulic shock absorber 1 (Fig. 6)

将空气压供给气体封入头31的上空气室43A(下空气室43B向大气开放)，使气体封入头31在真空头32周围上升，将油压缓冲器1的外筒2的上部释放到压紧装置33的辊63中。Air pressure is supplied to theupper air chamber 43A of the gas sealing head 31 (thelower air chamber 43B is open to the atmosphere), thegas sealing head 31 is raised around thevacuum head 32, and the upper part of theouter cylinder 2 of the hydraulic shock absorber 1 is released to the pressure. In theroller 63 of the tighteningdevice 33.

凸轮升降气缸65使凸轮构件64下降，由该凸轮构件64的下降使各辊63前进到面临外筒2上端面的位置，并且，在旋转马达62使旋转体61旋转的状态下，用夹持气缸23使夹持板22上升，将油压缓冲器1提升到压紧作业位置，将外筒2的上端面推压在各辊63的辊面上，这样，对外筒2的上端作用预定的压紧力，使外筒2的上端向内径方向变形，形成上端压紧部2A，将密封构件6、端板7安装在内筒3上端的正规组装位置上。这时，借助升降气缸36，由真空头32将密封构件6、端板7推压到内筒3上端的正规组装位置时的推压力例如为800kgf，用夹持气缸23使夹持板22上升，作用在外筒2上端的压紧力例如为1200kgf。The cam lifting cylinder 65 lowers thecam member 64, and therollers 63 are advanced to a position facing the upper end surface of theouter cylinder 2 by the descent of thecam member 64, and therotating body 61 is rotated by the rotating motor 62. The cylinder 23 raises the clamping plate 22, lifts the oil pressure buffer 1 to the pressing operation position, and pushes the upper end surface of theouter cylinder 2 against the roller surfaces of eachroller 63, so that the upper end of theouter cylinder 2 acts on the predetermined force. The pressing force deforms the upper end of theouter cylinder 2 in the direction of the inner diameter to form an upperend pressing portion 2A, and installs the sealingmember 6 and theend plate 7 on the normal assembly position of the upper end of theinner cylinder 3 . At this time, by means of the lifting cylinder 36, the pushing force when thevacuum head 32 pushes the sealingmember 6 and theend plate 7 to the regular assembly position on the upper end of theinner cylinder 3 is, for example, 800kgf, and the clamping cylinder 23 is used to lift the clamping plate 22. , The pressing force acting on the upper end of theouter cylinder 2 is, for example, 1200kgf.

在外筒2上形成了上端压紧部2A后，用夹持气缸23使夹持板22下降，将油压缓冲器1设置在性能评价作业位置。同时，停止旋转体61的旋转，使各辊63后退到原位置。After the upperend pressing portion 2A is formed on theouter cylinder 2, the clamping plate 22 is lowered by the clamping cylinder 23, and the hydraulic shock absorber 1 is set at the performance evaluation work position. At the same time, the rotation of therotating body 61 is stopped, and eachroller 63 is retracted to the original position.

(5)油压缓冲器1的性能评价(5) Performance evaluation of oil shock absorber 1

上述(3)的气体封入作业完成时，油压缓冲器1的活塞杆4被推出到外部，活塞杆4被推出时，性能评价部13的夹紧装置77自动地夹紧活塞杆4的前端部。夹紧装置77因升降头72的上下移动(该升降头72由升降马达73作用而上下移动)而上下移动，根据活塞杆4的伸缩行程和荷重计7的输出值，测定油压缓冲器1的气体反作用力和衰减力。气体反作用力是从马达73低速旋转时油压缓冲器1的各行程中荷重计76的输出值(静输出值)测定的。衰减力是从马达73高速旋转时油压缓冲器1的各行程中的荷重计7的输出值(动输出值)中，减去气体反作用力而测定的。When the gas sealing operation of (3) above is completed, thepiston rod 4 of the hydraulic shock absorber 1 is pushed out to the outside, and when thepiston rod 4 is pushed out, the clampingdevice 77 of theperformance evaluation unit 13 automatically clamps the front end of thepiston rod 4 department. The clampingdevice 77 moves up and down due to the vertical movement of the lifting head 72 (the liftinghead 72 is moved up and down by the lifting motor 73), and according to the telescopic stroke of thepiston rod 4 and the output value of theload gauge 7, the oil pressure buffer 1 is measured. The gas reaction force and damping force. The gas reaction force is measured from the output value (static output value) of theload gauge 76 in each stroke of the hydraulic shock absorber 1 when the motor 73 rotates at a low speed. The damping force is measured by subtracting the gas reaction force from the output value (dynamic output value) of theload gauge 7 in each stroke of the hydraulic shock absorber 1 when the motor 73 rotates at a high speed.

另外，油压缓冲器1的性能评价时的活塞杆4的伸缩行程，作为最大行程，这样把混入内筒3的油室内油中的空气，引到杆导引件5的上部、再从杆导引件5的回油路8排到外筒2与内筒3之间的气体室内。In addition, the telescopic stroke of thepiston rod 4 during the performance evaluation of the hydraulic shock absorber 1 is taken as the maximum stroke, so that the air mixed in the oil in the oil chamber of theinner tube 3 is guided to the upper part of therod guide 5, and then from the rod to the upper part of therod guide 5. The oil return passage 8 of theguide 5 is discharged into the gas chamber between theouter cylinder 2 and theinner cylinder 3 .

因此，本实施例具有以下作用。Therefore, this embodiment has the following effects.

①在把密封构件6临时封在油压缓冲器1的外筒2上的状态下，将该油压缓冲器1运入组装装置10，把临时封着的密封构件6从油压缓冲器1的外筒2的上端往上方提起，形成通往油压缓冲器1的气体导入通路，通过该气体导入通路，将预定压力的气体封入油压缓冲器1，气体封入后，在外筒2内将密封构件6安装在内筒3上端的正规组装位置。①In the state where the sealingmember 6 is temporarily sealed on theouter cylinder 2 of the hydraulic shock absorber 1, the hydraulic shock absorber 1 is transported into the assembly device 10, and the temporarily sealed sealingmember 6 is removed from the hydraulic shock absorber 1. The upper end of theouter cylinder 2 is lifted upwards to form a gas introduction passage leading to the oil shock absorber 1. Through this gas introduction passage, gas with a predetermined pressure is sealed into the oil pressure shock absorber 1. After the gas is sealed, the gas is sealed in theouter cylinder 2 The sealingmember 6 is installed at the regular assembly position on the upper end of theinner cylinder 3 .

②根据上述①，在油压缓冲器1往组装装置10运送的过程中，由于油压缓冲器1被密封构件6临时封住，所以，异物不会侵入，能简单地进行零件管理。②According to the above ①, since the hydraulic shock absorber 1 is temporarily sealed by the sealingmember 6 during the transportation of the hydraulic shock absorber 1 to the assembly device 10, foreign matter does not enter, and parts management can be easily performed.

③在上述①中，密封构件6被真空头32的真空吸引力顺利地从外筒2的上端向上方吸引，或者被真空头32推压而保持在外筒2内的正规组装位置上，所以，不损伤密封构件6的密封唇，能保证油压缓冲器1的组装质量。③ In the above ①, the sealingmember 6 is smoothly sucked upward from the upper end of theouter cylinder 2 by the vacuum suction force of thevacuum head 32, or is pushed by thevacuum head 32 to hold it in the regular assembly position in theouter cylinder 2, so, The assembly quality of the hydraulic shock absorber 1 can be ensured without damaging the sealing lip of the sealingmember 6 .

④油压缓冲器1，在组装装置10内，被安装密在封构件6的正规组装位置后，使由夹紧装置77保持的活塞杆4上下移动，由此可评价油压缓冲器1的气体反作用力、衰减力等性能。④ After the hydraulic shock absorber 1 is installed and sealed in the normal assembly position of the sealingmember 6 in the assembly device 10, thepiston rod 4 held by the clampingdevice 77 is moved up and down, so that the performance of the hydraulic shock absorber 1 can be evaluated. Gas reaction force, damping force and other properties.

上面参照附图详细说明了本发明的实施例，但本发明的具体构造并不局限于实施例。在不脱离本发明主题范围内所作出的各种设计变更，均包含在本发明内。The embodiments of the present invention have been described above in detail with reference to the drawings, but the specific configuration of the present invention is not limited to the embodiments. Various design changes made within the scope of the subject matter of the present invention are included in the present invention.

工业实用性Industrial Applicability

如上所述，根据本发明，在油压缓冲器的组装过程中，异物不侵入油压缓冲器内部，不损伤密封构件，可简单地进行零件管理，可保证油压缓冲器的组装质量。As described above, according to the present invention, during the assembly of the oil shock absorber, foreign matter does not enter the interior of the oil shock absorber and does not damage the sealing member, and parts management can be easily performed, thereby ensuring the assembly quality of the oil shock absorber.

Claims (3)

Translated fromChinese

1.油压缓冲器的组装方法，在油压缓冲器的内外筒之间形成储油室和其上方的气体室，用密封构件密封内外筒的上部；其特征在于，采用具有气体封入头、真空头、压紧装置的组装装置；用气体封入头保持住该油压缓冲器的外筒的上部，用真空头的真空吸引力、把临时封在油压缓冲器上的密封构件从外筒的上端往上方提起、从气体封入头的气体通路将预定压力的气体封入油压缓冲器内，用真空头将密封构件推压保持在内筒的上端正规组装位置上，将气体封入头从外筒上部向上方移动，用压紧装置使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置上；上述组装装置的气体封入头是用于保持住内部充填有油、在外筒上部内周临时封着密封构件的油压缓冲器的外筒上部，并具有将气体封入油压缓冲器的气体通路；上述真空头是装在气体封入头内，设有对临时封在油压缓冲器上的密封构件的上部空间施加真空吸引力的真空吸引路，并且在外筒内将密封构件推压到内筒上端的正规组装位置上；上述压紧装置是配置在油压缓冲器的外部、使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置。1. The method of assembling the oil pressure buffer is to form an oil storage chamber and a gas chamber above it between the inner and outer cylinders of the oil pressure buffer, and seal the upper part of the inner and outer cylinders with a sealing member; it is characterized in that the gas sealing head, The assembly device of the vacuum head and the pressing device; the upper part of the outer cylinder of the oil pressure buffer is held by the gas sealing head, and the sealing member temporarily sealed on the oil pressure buffer is removed from the outer cylinder by the vacuum suction force of the vacuum head. Lift the upper end of the upper end of the inner cylinder upwards, seal the gas at a predetermined pressure into the oil pressure buffer through the gas channel of the gas sealing head, use the vacuum head to push and hold the sealing member on the upper end of the inner cylinder at the normal assembly position, and seal the gas sealing head from the outside The upper part of the cylinder moves upwards, and the upper end of the outer cylinder is deformed toward the inner diameter direction by a pressing device, and the sealing member is installed in a regular assembly position; The inner periphery of the upper part temporarily seals the upper part of the outer cylinder of the oil pressure buffer of the sealing member, and has a gas passage for sealing the gas into the oil pressure buffer; The upper space of the sealing member on the buffer applies a vacuum suction path, and pushes the sealing member to the normal assembly position on the upper end of the inner cylinder in the outer cylinder; the above-mentioned pressing device is arranged outside the oil pressure buffer 1. Deform the upper end of the outer cylinder in the direction of the inner diameter, and install the sealing member to a regular assembly position.2.油压缓冲器的组装装置，在油压缓冲器的内外筒之间形成储油室和其上方的气体室，用密封构件密封内外筒的上部；其特征在于，设有气体封入头、真空头和压紧装置；用气体封入头保持油压缓冲器的外筒上部，用真空头的真空吸引力、把临时封在油压缓冲器上的密封构件从外筒的上端往上方提起，从气体封入头的气体通路将预定压力的气体封入油压缓冲器内，用真空头将密封构件推压保持在内筒上端的正规组装位置上，将气体封入头从外筒上部向上方移动，用压紧装置使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置；上述气体封入头是把内部充填有油、在外筒上部内周临时封着密封件的油压缓冲器的外筒上部保持、而且具有将气体封入油压缓冲器的气体通路；上述真空头是装在气体封入头内，有对临时封在油压缓冲器上的密封构件的上部空间施加真空吸引力的真空吸引路，并且在外筒内将密封构件推压到内筒上端的正规组装位置上；上述压紧装置是配置在油压缓冲器的外部，使外筒的上端朝内径方向变形，将密封构件安装到正规的组装位置。2. The assembly device of the oil pressure buffer, the oil storage chamber and the gas chamber above it are formed between the inner and outer cylinders of the oil pressure buffer, and the upper part of the inner and outer cylinders is sealed with a sealing member; it is characterized in that a gas sealing head, Vacuum head and pressing device: use the gas sealing head to keep the upper part of the outer cylinder of the oil pressure buffer, use the vacuum suction of the vacuum head to lift the sealing member temporarily sealed on the oil pressure buffer from the upper end of the outer cylinder upwards, Seal the gas at a predetermined pressure into the oil pressure buffer from the gas passage of the gas filling head, press and hold the sealing member at the upper end of the inner cylinder with a vacuum head, and move the gas filling head upward from the upper part of the outer cylinder, Use the pressing device to deform the upper end of the outer cylinder toward the inner diameter direction, and install the sealing member to the normal assembly position; the above-mentioned gas sealing head is an oil pressure buffer that fills the inside with oil and temporarily seals the seal on the inner periphery of the upper part of the outer cylinder The upper part of the outer cylinder holds and has a gas passage for sealing gas into the oil pressure buffer; the above-mentioned vacuum head is installed in the gas sealing head, and has a vacuum suction force on the upper space of the sealing member temporarily sealed on the oil pressure buffer The vacuum suction path, and push the sealing member to the regular assembly position of the upper end of the inner cylinder in the outer cylinder; the above-mentioned pressing device is arranged outside the oil pressure buffer, so that the upper end of the outer cylinder is deformed in the direction of the inner diameter, and the sealing Components are installed into normal assembly positions.3.如权利要求2所述的油压缓冲器的组装装置，其特征在于，具有保持活塞杆的杆保持装置，该活塞杆通过油压缓冲器的密封构件延伸到外部；在油压缓冲器的密封构件被安装到正规组装位置的状态下，使杆保持装置上下移动，可进行油压缓冲器的性能评价。3. The assembly device of the oil shock absorber according to claim 2, characterized in that there is a rod holding device for holding the piston rod extending to the outside through the sealing member of the oil shock absorber; The performance evaluation of the hydraulic shock absorber can be performed by moving the rod holder up and down with the sealing member installed in the regular assembly position.

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