Summary of the invention
It is an object of the invention to provide spiral shape mesh basket shapers, have the characteristics that formed precision is high.
Another object of the present invention is: providing spiral shape mesh basket forming method, molds the high mesh basket of form accuracy.
The solution that the present invention solves its technical problem is:
Spiral shape mesh basket shaper, including mold core, the mold core is interior to be equipped with several helical mesh basket silk slots, respectivelyThe axis of screw of a mesh basket silk slot is arranged along the vertical direction, and each mesh basket silk slot penetrates through mold core, the mold coreTop surface be equipped with upper boundling mouth, the bottom surface of the mold core is equipped with lower boundling mouth, the upper end of all mesh basket silk slots with it is describedUpper boundling mouth connection, the lower end of all mesh basket silk slots are connected to the lower boundling mouth, the upper boundling mouth and lower boundlingMouth is located on same vertical line.It is to be noted that helical form signified in the technical program, not to helix parameter and spiralMode is defined.Helix parameter such as screw pitch, the radius of spin etc.；Spiral way such as Reducing screw, variable-pitch auger etc..
As a further improvement of the above technical scheme, further include die holder, offered on the die holder and the mold coreCorresponding core slot, the die holder and the mold core releasable connection.
As a further improvement of the above technical scheme, the mold core includes the fission of several releasable connections, these pointsBody is annularly arranged, and the quantity of the fission is identical as the quantity of the mesh basket silk slot, and each fission is in the form of a column, eachA mesh basket silk slot is correspondingly provided on the outer peripheral surface of the fission.
As a further improvement of the above technical scheme, the side on the fission is equipped with upper tongue and groove and lower tongue and groove, instituteThe top surface of the bottom surface and the lower tongue and groove of stating tongue and groove is coplanar with, and the upper tongue and groove and the lower tongue and groove are symmetrical above and below.
As a further improvement of the above technical scheme, described seperated with magnetism.
As a further improvement of the above technical scheme, the quantity of the mesh basket silk slot is four, accordingly, the fissionQuantity be four, the shape of four mesh basket silk slots is all the same, and four mesh basket silk slots are along the circumferential direction uniformly arranged,Each fission is cylindrical.
The invention further relates to spiral shape mesh basket forming methods, including above-mentioned spiral shape mesh basket shaper, further include asLower step:
Step 1: one end boundling of several mesh basket silks is fixed, make several mesh basket silks formed have boundling end andThe tow at non-boundling end；Step 2: by the non-boundling end of each mesh basket silk in the tow respectively from the shaperThe lower end of mesh basket silk slot penetrate and be pierced by from the upper end of the mesh basket silk slot and tense upwards；Step 3: the non-boundling of towEnd is outer to be arranged fastening member, and fastening member is pushed down on next fastening, forms interim boundling end；Step 4: by determining for step 3Pattern tool carries out high-frequency heating together with tow and is warming up to 450~650 DEG C, heating time 70-90s；Step 5: by determining for step 4Pattern tool and tow are placed in water cooling；Step 6: taking out shaper and tow after cooling, removes fastening member and releases silkThe interim boundling of beam re-forms non-boundling end, and takes out tow；Step 7: by the non-boundling end of tow at interim boundling endCarry out boundling, the mesh basket silk after being formed.
As a further improvement of the above technical scheme, in the spiral shape mesh basket shaper: it further include die holder, it is describedDie holder is equipped with core slot corresponding with the mold core shape, and the mold core releasable connection is in the core slot；The mold core is alsoFission including several releasable connections, centered on the center of the above boundling mouth of these fissions, the line at the center of lower boundling mouthThe arrangement of axis circular array, the quantity of the fission is identical as the quantity of the mesh basket silk slot, each described seperated in cylinderShape is correspondingly provided with a mesh basket silk slot on the outer peripheral surface of each fission；In the spiral shape mesh basket forming method:Step 6 replacement are as follows: take out shaper after cooling, mold core is taken out from the die holder；Step 7 replacement are as follows: by mold coreIncluding each fission dismantle, the mesh basket silk after being formed.
The beneficial effects of the present invention are: mesh basket silk is arranged in mesh basket silk slot by the way that mesh basket silk slot is arranged in mold,Entire mold is heat-treated together with mesh basket silk, the form accuracy after capable of guaranteeing the heat treatment of mesh basket silk well is formedSpiral helicine mesh basket.
Embodiment is as follows, referring to figs. 1 to Fig. 5, spiral shape mesh basket shaper, including mold core, if being equipped in the mold coreThe axis of screw of the dry helical mesh basket silk slot 120 of item, each mesh basket silk slot 120 is arranged along the vertical direction, eachThe mesh basket silk slot 120 penetrates through mold core, and the top surface of the mold core is equipped with upper boundling mouth, and the bottom surface of the mold core is equipped with lower boundlingMouthful, the upper end of all mesh basket silk slots 120 is connected to the upper boundling mouth, and the lower end of all mesh basket silk slots 120 is equalIt is connected to the lower boundling mouth, the upper boundling mouth and lower boundling mouth are located on same vertical line.In the present embodiment, each netThe end of basket silk slot 120 is equipped with notch, and the outer side of these notch is connected to the external world, the inner side of these notch with it is respectiveMesh basket silk slot 120 is connected to, and the side of these notch interconnects, and thus forms upper boundling in the top surface of mold core and bottom surfaceMouth and lower boundling mouth, and the shape of each mesh basket silk slot can be consistent, and be also possible to inconsistent.Upper boundling mouth is underBoundling mouth is located on same vertical line, thus the bottom boundling of mesh basket silk slot 120 and top boundling be easily held in it is same verticalOn line, more meet conventional use habit, mesh basket silk slot 120 is easier to control.Mesh basket silk slot, mesh basket silk are equipped in shaperIt is threaded through when being heat-treated in mesh basket silk slot and is unlikely to deform, convenient for completing the high-precision heat treatment shaping of mesh basket silk.
Further, further include die holder 100, core slot corresponding with the mold core is offered on the die holder 100110, the die holder 100 and the mold core releasable connection.Top surface, the bottom surface of die holder offer and upper boundling mouth, lower boundling mouth phaseCorresponding escape groove, the setting of escape groove enable tow to pass through boundling mouth, lower boundling mouth.Core slot 110 can bePerforation setting, is also possible to not penetrate through setting, and in the embodiment shown in Figure 1, core slot 110 is perforation setting.Mold coreRemovable with die holder 100, die holder 100 and mold core are assembled together by when heat treatment, are conducive to keep the temperature thermal protection when heat treatment；Heat treatmentMold core and mold are dismantled afterwards, are conducive to fast cooling heat dissipation.
Further, the mold core includes the fission 210 of several releasable connections, the annularly arrangement of these fissions 210,Seperated 210 quantity is identical as the quantity of the mesh basket silk slot 120, each seperated 210 cylindrical, Mei GesuoIt states and is correspondingly provided with a mesh basket silk slot 120 on the outer peripheral surface of fission 210.Seperated appearance is arranged in mesh basket silk slot 120On face, so that the side of mesh basket silk slot 120 is open.Mesh basket silk after heat treatment can be directly to the outer of mesh basket silk slot 120It is side-draw go out, on the one hand solution need not tear end open take out mesh basket silk by way of 120 sliding of mesh basket silk slot, from thenThe continuous mode fastening end without again by end cap or boundling, on the other hand it is more advantageous to shape essence for keeping mesh basket silkDegree；Except, using directly to the outside of mesh basket silk slot 120 take out by the way of its take-off speed faster.
Further, the quantity of the mesh basket silk slot 120 is four, and accordingly, seperated 210 quantity is four,The shape of four mesh basket silk slots 120 is all the same, and four mesh basket silk slots 120 are along the circumferential direction uniformly arranged, Ge GesuoIt is cylindrical to state fission 210.Four mesh basket silk slots are set, so that accordingly the spiral shape mesh basket has four mesh basket silks, areA kind of common mesh basket in the field ERCP, meets common spiral shape mesh basket use habit in the field ERCP.Specifically, described in fourThe spiral number of turns of mesh basket silk slot are generally a circle, and are arranged on the outer surface of each fission, and split settings are cylindricNeed to only be rotated when processing mesh basket silk slot with certain rate it is seperated and simultaneously with certain rate on seperated outer surface edgeMilling cutter is moved in direction of rotation, that is, may be formed at the spiral mesh basket silk slot in surface.Its processing is relatively simple.
Further, the side on described seperated 210 is equipped with upper tongue and groove 211 and lower tongue and groove 212, the upper tongue and groove 211Bottom surface and the top surface of the lower tongue and groove 212 be coplanar with, the upper tongue and groove 211 and the lower tongue and groove 212 are symmetrical above and below.Pass throughArrangement above, positioning can be realized by upper tongue and groove 211 and lower tongue and groove 212 to abutting between two fissions 210.And upper enterpriseMouth 211 and the setting symmetrical above and below of lower tongue and groove 212, fission 210 is symmetrical above and below, and each seperated 210 match without orientation, assemblyWhen it is more convenient.Also, it with the above arrangement, the shape size of four fissions 210 can be arranged to identical form, savesSave die cost.
The application further relates to spiral shape mesh basket forming method, including above-mentioned spiral shape mesh basket shaper, referring to Fig. 5,Implement in one to further include following steps: step 1: one end boundling of several mesh basket silks is fixed, and forms several mesh basket silksTow with boundling end and non-boundling end；Related boundling fixation can be by welding herein, Huo ZhetongIt crosses outside mesh basket silk and is arranged end cap, end cap monnolithic case is cylindrical, and one end is equipped with line concentration mouth；It stretches one end of mesh basket silkAfter entering in line concentration mouth, pressing end cap narrows the line concentration mouth of end cap, keeps each mesh basket silk of boundling.It should be noted that specificProduct in use, the length of mesh basket silk is up to several meters, and the length thereof of mesh basket only accounts for about 20cm, its deformation quantity of mesh basket partIt is big usually to select Nitinol wire material.Mesh basket silk described herein is closed in particular in existing field usually using NiTiThe part of spun gold, due to cost considerations, one end of mesh basket silk are usually connected with stainless steel seal wire, not to avoid nitinol alloy wireNecessary waste.
Step 2: by the non-boundling end of each mesh basket silk in the tow respectively from the mesh basket silk of the shaperThe lower end of slot 120 penetrates and is pierced by from the upper end of the mesh basket silk slot 120 and tenses upwards；So that boundling end and shaperKeep relatively fixed, and have a relatively confirmable position so that using the mold carry out volume production when product it is consistentPerformance accesses guarantee.
Step 3: it is arranged fastening member outside the tow at the non-boundling end of tow, fastening member is pushed down on into next fastening, shapeAt interim boundling end；The fastening member is the specific can be that one has the elastic ring of opening, and elastic ring is under natural conditions inside itThe outer diameter at the size of through-hole boundling end more non-than tow is small, expands the through-hole inside elastic ring simultaneously using force when the elastic ringIt is threaded through the non-boundling end of tow interior, and the elastic ring of push-tight downwards, has using mesh basket silk slot and the elastic ring interim boundling endThere is a relatively confirmable position, homogeneity of product can be guaranteed when volume production；The fastening member can also two it is logicalCross the annular component etc. that the semi-ring being threaded togather is constituted.
Step 4: carrying out high-frequency heating together with tow for the shaper of step 3 and be warming up to 450~650 DEG C, when heatingBetween 70-90s；High-frequency heating temperature is preferably 500-600 DEG C, and heating realizes to be preferably 60~80s, further preferably 80s；
Step 5: the shaper of step 4 and tow are placed in water cooling；Water can be normal-temperature water, the water of normal-temperature waterBetween 20~25 DEG C, shaper is placed in water to be cooled to room temperature temperature, changes mesh basket silk by way of quenching after heatingCrystal moves towards and refines crystal grain.
Step 6: taking out shaper and tow after cooling and be placed in water cooling, removes fastening member and releases towInterim boundling re-forms non-boundling end, and takes out tow；Dismounting fastening member can be to be carried out using corresponding mode, as beforeWhen to state the fastening member be elastic ring, expanded using the interior bone of elastic ring when manpower or tool force to making tow be detached fromElastic ring, in another example the two is threadedly coupled to form interim boundling by two semi-rings, then the two (is torn open by contacting to be threadedly coupledExcept screw) mode remove interim fastening member, take out tow mode be specially it is top-down to the non-boundling end of towMesh basket silk slot is slipped over, thus mesh basket silk deviates from mesh basket silk slot, and tow takes out from shaper.Thermally treated and sizingAfterwards, which carries out shaping in the state of push-tight, can significantly have at interim boundling after the sizing of mesh basket silk tightSplenium.
Step 7: the non-boundling end of tow is subjected to boundling at interim boundling end, obtains mesh basket silk after molding.StepBoundling mode in seven is identical as the boundling mode of step one kind, and the position of boundling is the position of interim boundling, i.e. step 6Formed in press portion.The material of mesh basket silk is Nitinol, with ultra-strong elasticity.
By above step, it is formed using the high-precision that spiral shape mesh basket shaper realizes mesh basket, is guaranteed wellThe formed precision of mesh basket.
Further, in the embodiment two of spiral shape mesh basket forming method, in the spiral shape mesh basket shaper: also wrappingDie holder 100 is included, the die holder 100 is equipped with core slot 110 corresponding with the mold core shape, and the mold core releasable connection is in instituteIt states in core slot 110；The mold core further includes the fission 210 of several releasable connections, in these 210 or more boundling mouths of fissionThe line at the center of the heart, lower boundling mouth is the arrangement of center axis circular array, seperated 210 quantity and the mesh basket silk slot120 quantity is identical, and each described seperated 210 is cylindrical, is arranged in correspondence on each seperated 210 outer peripheral surfaceThere is a mesh basket silk slot 120；In the spiral shape mesh basket forming method: step 6 replacement are as follows: shaper after cooling is taken out,Mold core is taken out from the die holder 100；Since mesh basket silk slot is that each fission is spirally arranged in after taking-up mold coreSurface, mesh basket silk are alternately threaded through in the mold core being made of four fissions.Step 7 replacement are as follows: each point for including by mold coreBody 210 is dismantled, the mesh basket silk after being formed.Mesh basket silk after sizing its with certain shape retentivity, utilize mesh basketThe elasticity of silk detaches mesh basket silk from mesh basket silk slot, and mesh basket silk slot 120 is arranged on seperated outer surface, thus mesh basketThe side of silk slot 120 is open.Mesh basket silk after heat treatment can directly take out to the outside of mesh basket silk slot 120, on the one handEnd need not be torn open take out mesh basket silk by way of 120 sliding of mesh basket silk slot solution, so that subsequent need not lead to againThe mode fastening end of end cap or boundling is crossed, on the other hand it is more advantageous to the form accuracy for keeping mesh basket silk；Except, using straightConnect mode its take-off speed taken out to the outside of mesh basket silk slot 120 faster.
Better embodiment of the invention is illustrated above, but the present invention is not limited to the embodiment,Those skilled in the art can also make a variety of equivalent modifications or replacement on the premise of without prejudice to spirit of the invention, thisEquivalent variation or replacement are all included in the scope defined by the claims of the present application a bit.