CN108724630B - Side pouring plastic mold for shrinkage cavity demolding - Google Patents

Abstract

Translated fromChinese

本发明公开了一种缩孔脱模的侧浇注塑料模具，包括动模和定模，其中，所述动模包括推动杆，所述推动杆的外侧通过基板同轴设置有套筒，所述推动杆与所述基板滑动连接，所述推动杆的外周上设有若干个驱动杆，所述套筒由数目相同的扩张板和楔板相间设置组成，所述扩张板的一端固定设置在所述基板上，所述楔板活动设置在所述基板上，所述基板的内端面上设有若干个卡件，所述卡件用于对应楔板的锁定，进模过程中，所述驱动杆作用在对应的卡件对所述楔板进行释放。由于采用了上述结构，因而进模完成后，扩张板与楔板之间的卡合会更加紧密，很难产生缝隙，避免注塑件孔尺寸不稳定和表面粗糙的缺陷。

The invention discloses a side-casting plastic mold for mold release from shrinkage holes, which includes a movable mold and a fixed mold, wherein the movable mold includes a push rod, and a sleeve is coaxially arranged on the outer side of the push rod through a base plate, and the The push rod is slidably connected with the base plate, a plurality of drive rods are arranged on the outer circumference of the push rod, the sleeve is composed of the same number of expansion plates and wedge plates arranged alternately, and one end of the expansion plate is fixedly arranged on the On the base plate, the wedge plate is movably arranged on the base plate, and the inner end face of the base plate is provided with a number of clips, and the clips are used for locking the corresponding wedge plate. The rod acts on the corresponding clip to release the wedge plate. Due to the adoption of the above structure, after the injection mold is completed, the engagement between the expansion plate and the wedge plate will be tighter, and it is difficult to generate a gap, avoiding the defects of unstable hole size and rough surface of the injection molded part.

Description

Side pouring plastic mold for shrinkage cavity demolding

Technical Field

The invention relates to a mold, in particular to a side-pouring plastic mold for shrinkage cavity demolding.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to shape an article, the tool being made up of various parts, and different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material.

Chinese patent CN201520126284.9 discloses a side pouring plastic mold of shrinkage cavity drawing of patterns, including movable mould and cover half, the movable mould includes the catch bar, the outside of catch bar still coaxially is provided with round platform form sleeve, sleeve osculum department is towards the cover half, the catch bar diameter equals with sleeve minor bore, the sleeve is cut apart into two at least overcoat pieces and two at least interior cover pieces in the axial, interior cover piece has the elasticity towards sleeve axle center.

In the above patent document, in the mold feeding process, the push rod can push the inner sleeve pieces open to be embedded in the gaps between the outer sleeve pieces, and when the inner sleeve pieces completely fill the gaps between the outer sleeve pieces, the push rod can simultaneously push the outer sleeve pieces and the inner sleeve pieces open outwards, so that gaps are generated between the outer sleeve pieces and the inner sleeve pieces, and the injection molding part has the defects of unstable size and lusterless surface.

Disclosure of Invention

In view of the above, the invention provides a side-pouring injection molding material mold capable of avoiding shrinkage cavity demolding caused by defects on the surface of an injection molding part.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a side pouring plastic mold of shrinkage cavity drawing of patterns, includes movable mould and cover half, wherein, the movable mould includes the catch bar, the outside of catch bar is through the coaxial sleeve that is provided with of base plate, the catch bar with base plate sliding connection, be equipped with a plurality of actuating lever on the periphery of catch bar, the sleeve comprises the same expansion board of figure and alternate setting of wedge plate, the one end of expansion board is fixed to be set up on the base plate, the wedge plate activity sets up on the base plate, be equipped with a plurality of fastener on the interior terminal surface of base plate, the fastener is used for corresponding the locking of wedge plate, advances the mould in-process, the actuating lever is used for corresponding fastener right the wedge plate releases.

Further, the sleeve still includes movable rod and compression spring, the movable rod is connected the tail end of wedge plate, the movable rod with base plate sliding connection, the compression spring cover is established on the movable rod, compression spring be located the base plate with between the wedge plate.

Furthermore, the expansion plate comprises an arc-shaped long straight plate, a connecting part, an arc-shaped conical plate and an arc-shaped short straight plate which are sequentially connected, the arc-shaped long straight plate is fixed on the base plate, the arc-shaped conical plate is obliquely arranged, and the inner side surface of the arc-shaped short straight plate can be tightly attached to the outer peripheral surface of the push rod.

Furthermore, the wedge plate comprises a flat plate, an inclined plate and an arc plate which are connected in sequence, the flat plate is connected with the movable rod, and the inner side surface of the arc plate is tightly attached to the outer peripheral surface of the pushing rod.

Furthermore, a clamping groove is formed in the inner wall of the flat plate, and the clamping piece can be clamped with the clamping groove to achieve locking of the wedge plate.

Further, the fastener includes the hook, the front end of hook has a hook portion, hook portion with draw-in groove looks block, the trailing end connection of hook has a pair of elasticity leg, forms a passageway between a pair of elasticity leg, respectively is equipped with an oblique slide on the both sides face that is close to each other of a pair of elasticity leg, be connected with the stabilizer blade on the tail end of elasticity leg, the fastener is through a pair of stabilizer blade fixed connection on the base plate, the actuating lever can get into in the passageway, the both ends of actuating lever can be used in the oblique slide that corresponds respectively makes the fastener with the keysets separation.

Furthermore, the driving rod comprises a straight rod and a pair of pressing rods, the straight rod is vertically and fixedly arranged on the periphery of the pushing rod, the pair of pressing rods are arranged on two sides of the straight rod, the straight rod can enter the channel, and the pressing rods can slide along the inclined slide way.

Furthermore, the number of the expansion plates is 3-9.

The technical scheme can show that the invention has the advantages that: the sleeve is arranged in the injection molding machine, the sleeve is formed by alternately arranging expansion plates and wedge plates with the same number, the clamping piece is clamped on the inner wall of each wedge plate and can release and lock the wedge plate, in the mold feeding process, the expansion plates are firstly expanded by the push rod, then the clamping piece is separated from the wedge plates by the driving rod, the wedge plates are filled in gaps between the expansion plates under the action force of the compression springs, and the surface defects of injection molding parts caused by the gaps between the wedge plates and the expansion plates are avoided, so that the processing precision of the injection molding parts is improved.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:

fig. 1 is a side view of the initial state of the present invention.

Fig. 2 is a sectional view taken in the direction of a-a in fig. 1.

Fig. 3 is an enlarged view at I in fig. 2.

Fig. 4 is a side view of yet another state of the invention.

Fig. 5 is a sectional view taken in the direction B-B in fig. 4.

Fig. 6 is a front view of the substrate of the present invention.

Fig. 7 is a cross-sectional view of a card media of the present invention.

Fig. 8 is a top view of a clip of the present invention.

Fig. 9 is a front view of the drive rod of the present invention.

Labeled as: thepush rod 1, the driving rod 11, thestraight rod 111, thepressure lever 112, thesleeve 2, the expandingplate 21, the arc-shaped longstraight plate 211, the connectingpart 212, thegroove 2121, the arc-shapedconical plate 213, the arc-shaped shortstraight plate 214, thelarge hole 215, thesmall hole 216, thewedge plate 22, theflat plate 221, theclamping groove 2211, theinclined plate 222, the arc-shaped plate 223, themovable rod 23, thelimiting block 231, thecompression spring 24, thebase plate 3, thecentral hole 31, the throughgroove 32, thelimiting hole 33, theclamping piece 4, the supportingleg 41, theelastic leg 42, theinclined slideway 421, theconcave arc surface 4211, thehook 43, thehook head 431.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, a side pouring plastic mold for shrinkage cavity demolding as shown in fig. 1, 2, 4, 5 and 6 comprises a movable mold and a fixed mold, wherein the movable mold comprises apush rod 1, asleeve 2 is coaxially arranged at the outer side of thepush rod 1 through abase plate 3, thepush rod 1 is slidably connected with thebase plate 3 through acentral hole 31 arranged on thebase plate 3, a plurality of driving rods 11 are arranged on the periphery of thepush rod 1, thesleeve 2 is composed ofexpansion plates 21 andwedge plates 22 which are the same in number and are arranged at intervals, one end of eachexpansion plate 21 is fixedly arranged on thebase plate 3, thewedge plates 22 are movably arranged on thebase plate 3,clamping pieces 4 which are the same in number as thewedge plates 22 are arranged on the inner end face of thebase plate 3, theclamping pieces 4 are used for locking corresponding to thewedge plates 22, during mold entering, thepush rod 1 firstly expands theexpansion plates 21 to the limit state, and the driving rod 11 arranged on thepush rod 1 acts on thecorresponding clamping piece 4 to release thewedge plate 22, and thewedge plate 22 fills the gap between theadjacent expansion plates 21, so that the processing precision of the injection molding piece is improved.

As shown in fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, thesleeve 2 further includes amovable rod 23 and acompression spring 24, themovable rod 23 is connected to the tail end of thewedge plate 22, themovable rod 23 is slidably connected to thebase plate 3 through alimiting hole 33 provided on thebase plate 3, thecompression spring 24 is sleeved on themovable rod 23, thecompression spring 24 is located between thebase plate 3 and thewedge plate 22, and in the mold feeding process, after thewedge plate 22 is released, thewedge plate 22 moves forward under the action of thecompression spring 24 to the gap between theadjacent expansion plates 21 to be filled up.

As shown in fig. 2, theexpansion plate 21 includes the longstraight board 211 of arc, connectingportion 212,arc awl board 213 and the shortstraight board 214 of arc that connect gradually, the longstraight board 211 of arc is fixed on thebase plate 3, be equipped with arecess 2121 in the interior week of connectingportion 212, the setting ofrecess 2121 improves the flexibility ofarc awl board 213 avoids the longstraight board 211 transition of arc warp, the slope ofarc awl board 213 sets up, advances the mould in-process,expansion plate 21 can outwards expand, the shortstraight board 214 of arc medial surface can with the outer peripheral face ofcatch bar 1 closely laminates, ensures the high quality in injection molding hole.

Preferably, the number of theexpansion plates 21 is 3 to 9.

In this embodiment, the number of theexpansion plates 21 is 5, and at this time, thewedge plate 22 and theexpansion plates 21 are in the most close contact, and the probability of generating defects on the surface of the injection molding part is the least.

As shown in fig. 2, thewedge plate 22 includes aflat plate 221, aninclined plate 222 and anarc plate 223 that are connected in sequence, theflat plate 221 is connected to themovable rod 23, the inner side surface of thearc plate 223 is tightly attached to the outer peripheral surface of the pushingrod 1, aclamping groove 2211 is arranged on the inner wall of theflat plate 221, and theclamping piece 4 can be clamped with theclamping groove 2211 to lock thewedge plate 22.

As shown in fig. 7 and 8, thecard connector 4 includes ahook 43, ahook head 431 is provided at a front end of thehook 43, thehook head 431 is engaged with theslot 2211, a pair ofelastic legs 42 is connected to a rear end of thehook 43, achannel 44 is formed between the pair ofelastic legs 42, two adjacent side surfaces of the pair ofelastic legs 42 are respectively provided with aninclined slide 421, afoot 41 is connected to a rear end of theelastic leg 42, thecard connector 4 is fixedly connected to thebase plate 3 through the pair offeet 41, the driving rod 11 can enter thechannel 44, and two ends of the driving rod 11 can respectively act on the correspondinginclined slide 421 to separate thecard connector 4 from thewedge plate 22.

As shown in fig. 2, 8 and 9, the driving rod 11 includes astraight rod 111 and a pair ofpressing rods 112, thestraight rod 111 is vertically and fixedly disposed on the periphery of the pushingrod 1, the pair ofpressing rods 112 are disposed on two sides of thestraight rod 111, thestraight rod 111 can enter thechannel 44 through the throughslot 32 on thebase plate 3, and thepressing rods 112 can slide along theinclined slide 421.

In the above structure, the process of forward movement of thepush rod 1 is a mold feeding process, thepush rod 1 will pass through thelarge hole 215 of thesleeve 2 and enter thesmall hole 216 of thesleeve 2, theexpansion plates 21 are expanded, in this process, the driving rod 11 on thepush rod 1 will pass through the throughslot 32 and enter thechannel 44, thepressing rod 112 will slide on theconcave arc surface 4211 of theinclined slideway 421 and generate a pressure action on theelastic leg 42, so that theelastic leg 42 bends downward and deforms, theelastic leg 42 will pull thehook head 431 to separate from theclamping slot 2211, at this time, thecompression spring 24 resets to push thewedge plate 22 to move forward, when the front end surface of the limitingblock 231 on themovable rod 23 abuts against the rear end surface of thebase plate 3, thewedge plate 22 just fills up the gap between theexpansion plates 21, at this time, injection molding can be started, after the injection molding is completed, thewedge plate 22 is pulled out, and then thepush rod 1 is pulled out, theexpansion plate 21 is reset and contracted, theexpansion plate 21 is separated from the injection molding hole for demolding, and the surface of the part molded in the process cannot generate defects.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

Translated fromChinese

1.一种缩孔脱模的侧浇注塑料模具，包括动模和定模，其特征在于，所述动模包括推动杆(1)，所述推动杆(1)的外侧通过基板(3)同轴设置有套筒(2)，所述推动杆(1)与所述基板(3)滑动连接，所述推动杆(1)的外周上设有若干个驱动杆(11)，所述套筒(2)由数目相同的扩张板(21)和楔板(22)相间设置组成，所述扩张板(21)的一端固定设置在所述基板(3)上，所述楔板(22)活动设置在所述基板(3)上，所述基板(3)的内端面上设有若干个卡件(4)，所述卡件(4)用于对应楔板(22)的锁定，进模过程中，所述驱动杆(11)作用在对应的卡件(4)对所述楔板(22)进行释放，其中，所述扩张板(21)包括依次连接的弧形长直板(211)、连接部(212)、弧形锥板(213)和弧形短直板(214)，所述弧形长直板(211)固定在所述基板(3)上，所述弧形锥板(213)倾斜设置，所述弧形短直板(214)的内侧面可与所述推动杆(1)的外周面紧密贴合，所述楔板(22)包括依次连接的平板(221)、斜板(222)和弧形板(223)，所述平板(221)与所述活动杆(23)相连，所述弧形板(223)的内侧面与所述推动杆(1)的外周面紧密贴合，所述平板(221)的内壁上设有一卡槽(2211)，所述卡件(4)可与所述卡槽(2211)相卡合实现所述楔板(22)的锁定，所述卡件(4)包括钩子(43)，所述钩子(43)的前端具有一钩头部(431)，所述钩头部(431)与所述卡槽(2211)相卡合，所述钩子(43)的尾端连接有一对弹性腿(42)，一对弹性腿(42)之间形成一通道(44)，一对弹性腿(42)的相互靠近的两侧面上各设有一斜滑道(421)，所述弹性腿(42)的尾端上连接有支脚(41)，所述卡件(4)通过一对支脚(41)固定连接在所述基板(3)上，所述驱动杆(11)可进入所述通道(44)内，所述驱动杆(11)的两端可分别作用在对应的斜滑道(421)使所述卡件(4)与所述楔板(22)分离。1. A side-casting plastic mold for shrinkage cavity demoulding, comprising a movable mold and a fixed mold, wherein the movable mold comprises a push rod (1), and the outside of the push rod (1) passes through a base plate (3) A sleeve (2) is coaxially arranged, the push rod (1) is slidably connected with the base plate (3), and a plurality of drive rods (11) are arranged on the outer circumference of the push rod (1). The cylinder (2) is composed of the same number of expansion plates (21) and wedge plates (22) arranged alternately, one end of the expansion plate (21) is fixedly arranged on the base plate (3), and the wedge plates (22) The base plate (3) is movably arranged on the base plate (3), the inner end face of the base plate (3) is provided with a plurality of clips (4), the clips (4) are used for locking the corresponding wedge plate (22), During the moulding process, the drive rod (11) acts on the corresponding clip (4) to release the wedge plate (22), wherein the expansion plate (21) comprises arc-shaped long straight plates (211) connected in sequence ), a connecting part (212), an arc-shaped conical plate (213) and an arc-shaped short straight plate (214), the arc-shaped long straight plate (211) is fixed on the base plate (3), and the arc-shaped conical plate ( 213) Inclined arrangement, the inner side of the short arc-shaped straight plate (214) can be closely fitted with the outer peripheral surface of the push rod (1), and the wedge plate (22) A plate (222) and an arc-shaped plate (223), the flat plate (221) is connected with the movable rod (23), and the inner surface of the arc-shaped plate (223) is connected to the outer peripheral surface of the push rod (1) The inner wall of the flat plate (221) is provided with a slot (2211), and the clip (4) can be engaged with the slot (2211) to lock the wedge plate (22). , the clip (4) includes a hook (43), the front end of the hook (43) has a hook head (431), and the hook head (431) is engaged with the card slot (2211) A pair of elastic legs (42) is connected to the tail end of the hook (43), a channel (44) is formed between the pair of elastic legs (42), and the two sides of the pair of elastic legs (42) that are close to each other are respectively An inclined slideway (421) is provided, a support foot (41) is connected to the rear end of the elastic leg (42), and the clip (4) is fixedly connected to the base plate (3) through a pair of support feet (41). On the upper side, the driving rod (11) can enter the channel (44), and the two ends of the driving rod (11) can act on the corresponding inclined slideways (421) respectively, so that the clamping piece (4) is connected to the The wedge plates (22) are separated.2.根据权利要求1所述的缩孔脱模的侧浇注塑料模具，其特征在于，所述套筒(2)还包括活动杆(23)和压缩弹簧(24)，所述活动杆(23)连接在所述楔板(22)的尾端，所述活动杆(23)与所述基板(3)滑动连接，所述压缩弹簧(24)套设在所述活动杆(23)上，所述压缩弹簧(24)位于所述基板(3)与所述楔板(22)之间。2. The side-casting plastic mold for shrinkage cavity demoulding according to claim 1, wherein the sleeve (2) further comprises a movable rod (23) and a compression spring (24), and the movable rod (23) ) is connected to the rear end of the wedge plate (22), the movable rod (23) is slidably connected to the base plate (3), and the compression spring (24) is sleeved on the movable rod (23), The compression spring (24) is located between the base plate (3) and the wedge plate (22).3.根据权利要求2所述的缩孔脱模的侧浇注塑料模具，其特征在于，所述驱动杆(11)包括一直杆(111)和一对压杆(112)，所述直杆(111)垂直固定设置在所述推动杆(1)的外周上，一对压杆(112)设置在所述直杆(111)的两侧，所述直杆(111)可进入所述通道(44)内，所述压杆(112)可沿所述斜滑道(421)滑动。3. The side-casting plastic mold for shrinkage cavity demoulding according to claim 2, wherein the driving rod (11) comprises a straight rod (111) and a pair of pressing rods (112), the straight rod (112). 111) Vertically and fixedly arranged on the outer circumference of the push rod (1), a pair of pressing rods (112) are arranged on both sides of the straight rod (111), and the straight rod (111) can enter the channel ( 44), the pressing rod (112) can slide along the inclined slideway (421).4.根据权利要求3所述的缩孔脱模的侧浇注塑料模具，其特征在于，所述扩张板(21)的个数为3～9个。4 . The side-casting plastic mold for demoulding shrinkage holes according to claim 3 , wherein the number of the expansion plates ( 21 ) is 3 to 9. 5 .

Images