CN107139404A - Have the moulding mould and its release method of internal thread - Google Patents

Abstract

The present invention discloses a kind of moulding mould for having internal thread, including the first mould, second mould and axostylus axostyle, second mould offers the first through hole matched with axostylus axostyle, the axostylus axostyle is rotatable to be located in first through hole with what is slided, one end of the axostylus axostyle is through the second mould and provided with thread core, the thread core and the first mould, second mould merges the injection die cavities for constituting moulding, first mould or the second mould are provided with the material hole led in injection die cavities, the release method of the mould can realize the automatic core-pulling of thread core, first mould includes the first outside plate, convex module and demoulding block, isolating construction is provided between first outside plate and demoulding block, the automatic demoulding of moulding can be realized by the structure, it is greatly improved the demoulding efficiency of the moulding of tool internal thread.

Description

Have the moulding mould and its release method of internal thread

Technical field

The present invention relates to injection mold field, the moulding mould and its release method of internal thread are specifically related to.

Background technology

Have the mould of internal thread moulding for injection molding, because it has there is shape in internal thread, the die cavity of mould Into the core of screw thread, the demoulding of moulding is wasted time and energy after existing this mold injection molding, demoulding efficiency and its low, it is impossible to Automatic stripping result is realized, these are also one of influence production efficiency factor, and demoulding efficiency also is difficult to lifting, for this problem Inventor makes improvements on injection mold this case generation then.

The content of the invention

It is an object of the invention to provide one kind can automatic demoulding, carry it is efficient it is a kind of have internal thread moulding mould Tool；Another object of the present invention is to provide the automatic demoulding method of this kind of mould.

To achieve the above object, the technical scheme is that：The moulding mould of tool internal thread, including the first mould, Second mould and axostylus axostyle, second mould offer the first through hole matched with axostylus axostyle, and the axostylus axostyle is rotatable and slides Be located in first through hole, one end of the axostylus axostyle is through the second mould and provided with thread core, the thread core and the One mould, the second mould merge the injection die cavities for constituting moulding, and first mould or the second mould, which are provided with, leads to injection Material hole in die cavity.

The axostylus axostyle connects rotating drive mechanism, and screw thread when the demoulding can be achieved is rotated by rotating drive mechanism driving axostylus axostyle The automatic core-pulling of core.

The rotating drive mechanism include be erected on the second mould motor, be separately positioned on motor output Gear on axle and axostylus axostyle, and connection are driven the chain of two gears.

The mould also includes the axostylus axostyle limiting structure for limiting axostylus axostyle action.

The axostylus axostyle limiting structure includes fixed plate, movable plate, spacer block and mobile link structure, the fixed plate correspondence Axostylus axostyle offers the second through hole passed through for the axostylus axostyle other end, and the spacer block is arranged between the second mould and fixed plate and three Person locks together, and the movable plate can withstand axle end in the outside of fixed plate by mobile link structure setting, described Mobile link structure includes the counterbore being opened on movable plate, the third through-hole being opened in fixed plate, spring and bolt, described Bolt passes through counterbore and third through-hole and end locking is on spacer block, and the bolt head of the bolt not may pass through counterbore, institute State spring and be set on bolt and be embedded in third through-hole and two ends are withstood on spacer block and movable plate respectively, the movable plate can Opposing fixed plate laminating and separate mobile, the gear mesh of the rotating drive mechanism are realized by pressure and spring tension respectively It should be arranged in the clearance space between the second mould and fixed plate.

Also locking is provided with support column around axostylus axostyle between second mould and fixed plate.

Constituted between the movable plate and fixed plate, spacer block, the second mould, the first mould provided with pilot hole and guide rod The first positioning guiding structure, the fixing end of the guide rod is arranged on movable plate.

First mould can mutual chimeric the first positioning block structure with being respectively equipped with the second mould.

First mould is set in convex module week including the convex module and matching of the first outside plate, projection on the first outside plate The stripper plate enclosed, the one side structure of the convex module and stripper plate dorsad the first outside plate constitutes the one side structure of moulding, The isolating construction that both are automatically separated can be made when between the stripper plate and the first outside plate provided with the demoulding, so that by moulding from the Automatic demoulding goes out on one mould.

The isolating construction includes correspondence and is opened in the first outside plate, stripper plate, the second mould, spacer block, fixed plate and shifting Sliding eye on dynamic plate and through the pull bar in all sliding eyes, the diameter of the stripper plate and the sliding eye on the second mould Less than the diameter of other sliding eyes；The two ends of the pull bar are respectively equipped with pulling ring, the pulling ring diameter be more than stripper plate and The diameter of sliding eye on second mould, less than the diameter of other sliding eyes, so as to pull stripper plate to be separated with the first outside plate.

The second positioning and guiding constituted between first outside plate, stripper plate and the second mould provided with pilot hole and guide rod Structure, the fixing end of the guide rod of second positioning guiding structure is arranged on the first outside plate, and its other end is provided with and can prevented The structure of stripper plate abjection.

Tension structure is additionally provided between first mould and the second mould.

The tension structure include be opened on the second mould plug hole, be opened on stripper plate it is corresponding with plug hole Plug through hole, nylon plug and lead screw, the nylon plug are located in plug hole and plug through hole, and it is located in the second mould One end on tool is provided with screw hole, and its other end locks on the first outside plate through plug through hole, the lead screw for head A diameter of diminishing structure of one end rearwardly one end, the lead screw screws togather into screw hole, nylon plug can rise Major diameter is fitted tightly on the wall of plug hole side.

The second positioning block structure that can be mutually fitted together to is respectively equipped with the stripper plate and the first outside plate.

Locking part is additionally provided with side wall between first mould and the second mould, the two ends of the locking part lead to respectively Screw locking is crossed on the first outside plate and the second mould.

The release method of above-mentioned mould, automatic demoulding step of the injection molding after cooling is as follows, 1), release to movable plate Pressure, movable plate is separated with fixed plate, form the space exited for axostylus axostyle；

2), start rotating drive mechanism, drive the rotation of axostylus axostyle thread core is exited moulding and realize that automatic core-pulling is moved Make；

3), the first mould and the second mould opposite direction are separated, now moulding is bonded on the first mould；

4), continue to separate the first mould and the second mould, until isolating construction pulls demoulding block by itself and the first outside plate point Leave, stripper plate pushes down the edge of moulding during separation, so as under moulding is departed from from convex module, realize automatic demoulding.

By using above-mentioned technical proposal, the beneficial effects of the invention are as follows：Above-mentioned thread core is arranged on rotatable and sliding On dynamic axostylus axostyle, the thread core during demoulding on axostylus axostyle can realize the core pulling of thread core by rotating shaft rod, and axostylus axostyle It is connection rotating drive mechanism again, therefore the effect of automatic core-pulling can be realized；Above-mentioned axostylus axostyle limiting structure can be realized automatically Action, can play and preferably limit effect, and be conducive to the structure between the first mould and the second mould to be connected setting；Institute State the structure setting of the first mould and ingenious in design with the attachment structure setting structure of other parts, pass through above-mentioned release method It can be seen that, stripping action is driven by die sinking action, so that the automatic demoulding effect of moulding is realized, die sinking demoulding step letter It is clean；Overall structure connection will not disperse after die sinking, and tedious steps will not be brought to matched moulds, can an opposing force during matched moulds On matched moulds, matched moulds is close, is molded by the moulding come more perfect；The matched moulds die sinking work of above-mentioned mould can be without manually participating in Carry out, artificial labor intensity can be reduced, reduce human cost, the Integral connection structure of mould is less prone to failure.

Brief description of the drawings

Fig. 1 and Fig. 2 are a kind of structural representations for having internal thread moulding mould of the present invention；

Fig. 3 is A-A sectional views in Fig. 2.

Fig. 4 is B-B sectional views in Fig. 2.

Fig. 5 is C-C sectional views in Fig. 2.

Fig. 6 is D-D sectional views in Fig. 2.

In figure：

First mould 1；First outside plate 11；Convex module 12；Stripper plate 13；Isolating construction 14；

Sliding eye 141；Pull bar 142；Pull ring 1421；

Second mould 2；First through hole 21；Axostylus axostyle 3；Thread core 31；

Injection die cavities 4；Material hole 5；Rotating drive mechanism 6；Motor 61；Gear 62；Chain 63；

Axostylus axostyle limiting structure 7；Fixed plate 71；Second through hole 711；Movable plate 72；

Spacer block 73；Support column 731；Mobile link structure 74；Counterbore 741；

Third through-hole 742；Spring 743；Bolt 744；

First positioning guiding structure 81；

First positioning block structure 82；Second positioning guiding structure 83；Second positioning block structure 84；

Tension structure 9；Plug hole 9；Plug through hole 92；Nylon plug 93；Screw hole 931；Lead screw 94；Locking part 10.

Embodiment

In order to which technical scheme is explained further, come below by a complete specific embodiment to the present invention It is described in detail.

The moulding mould of tool internal thread disclosed by the invention, as shown in figures 1 to 6, including the first mould 1, the second mould 2 With axostylus axostyle 3, second mould 2 offers the first through hole 21 matched with axostylus axostyle 3, and the axostylus axostyle 3 is rotatable and slip It is located in first through hole 21, can be set by bearing, one end of the axostylus axostyle 3 is through the second mould 2 and provided with screw-type Core 31, the mould 1 of thread core 31 and first, the second mould are 2-in-1 and constitute the injection die cavities 4 of moulding, first mould The mould 2 of tool 1 or second, which is provided with the material hole 5 led in injection die cavities 4, figure, to be arranged on the first mould 1.Here one is illustrated Under, constitute injection die cavities 4 may also include other, and for example formed also includes in the core of moulding side edge recesses structure, mould In corresponding component and its attachment structure, matched moulds, die sinking and release method also there is corresponding steps or structure to act, in the present invention not It is related to not shown in improvement therefore part figure of the part, is not also described further in text.It is molded, is noted using the mould After plastic injection molding, the separation between moulding and thread core 31 is axostylus axostyle 3 is exited moulding by rotating shaft rod 3, That is the core pulling of rotating shaft rod 3, the first mould 1 and the second mould 2 are then separated again to be made under the moulding demoulding, takes out moulding.

Further, the connection of axostylus axostyle 3 rotating drive mechanism 6, drives axostylus axostyle 3 to rotate come real by rotating drive mechanism 6 The automatic core-pulling of thread core 31 when being now stripped, in the present embodiment, the structure of the rotating drive mechanism 6 as shown in figure 3, including The motor 61 being erected on the second mould 2, the gear 62 being separately positioned on the output shaft of motor 61 and axostylus axostyle 3, and The chain 63 of connection two gears 62 of transmission, realizes that drive rotating shaft 3 is rotated by controlling the start and stop and rotating of motor 61 Thread core 31 is set to constitute injection die cavities 4 through first through hole 2, or carry out core pulling, the rotating drive mechanism 6 are exited in rotation Other known drive technology can be used, the application purpose effect of other drive technologies is identical, as equivalent technologies, belongs to this The protection domain of invention.

Appearance influence moulding precision, the feelings of the tight ness rating of matched moulds when further, to prevent axostylus axostyle 3 before injection and being molded Condition, as shown in FIG., the mould also include the axostylus axostyle limiting structure 7 for limiting the action of axostylus axostyle 4, described in the present embodiment The concrete structure of axostylus axostyle limiting structure 7 includes fixed plate 71, movable plate 72, spacer block 73 and mobile link structure 74；It is described solid The correspondence axostylus axostyle 3 of fixed board 71 offers the second through hole 711 passed through for the other end of axostylus axostyle 3；The spacer block 73 is arranged on the second mould Simultaneously three locks together between tool 2 and fixed plate 71, and the spacer block 73 shown in figure is the long strip block for being arranged on two sides, The space being separated out is mainly used in the transmission space for the middle gear 62 of rotating drive mechanism 6 and chain 63, the second mould 2 described in figure Also lock provided with its interval supporting role of support column 731 around axostylus axostyle 3 between fixed plate 71；The movable plate 72 passes through Mobile link structure 74 is arranged on the outside of fixed plate 71, its role is to withstand the end of axostylus axostyle 3, so as to play to axostylus axostyle 3 Action is limited；The mobile link structure 74, as shown in Figure 4 include be opened on movable plate 72 counterbore 741, be opened in fixation Third through-hole 742, spring 743 and bolt 744 on plate 71, the bolt 744 is through counterbore 741 and third through-hole 742 and holds Portion locks on spacer block 73, and the bolt head of the bolt 744 not may pass through counterbore 741, the i.e. end of bolt 744 to connect Withstanding movable plate 72 prevents that movement is deviate from during separation, and the spring 743 is set on bolt 744 and is embedded in third through-hole 742 And two ends are withstood on spacer block 73 and movable plate 72 respectively, mobile link structure described in figure 74 laid on mould it is multiple, with Keep mobile balance, the movable plate 72 can respectively by pressure (pressure can be member pressure from injection machine or Other pressing structures) and the tension force of spring 743 realize that opposing fixed plate 71 is fitted and separate mobile, can be limited during laminating Axostylus axostyle 3 is exited, and axostylus axostyle 3 can be exited in core pulling, Fig. 3 after separation, and the first through hole 21 is pyramidal structure, and the axostylus axostyle 3 is set There is the pyramidal structure matched corresponding to pyramidal structure under matched moulds state, when can improve 31 matched moulds of thread core on axostylus axostyle 3 Tight ness rating.

Mould in the present embodiment is that die sinking is realized in relative direction separation when molding, and is accurate for ease of die sinking and matched moulds Degree and speed, as shown in figure 4, being set between the movable plate 72 and fixed plate 71, spacer block 73, the second mould 2, the first mould 1 There is the first positioning guiding structure 81 that pilot hole and guide rod are constituted, mobile link structure described in figure 74 is laid many on mould Individual, to keep the balance slided, the fixing end of the guide rod, which is arranged on movable plate 71, is conducive to the overall structure of mould to set Meter, meets mould die sinking and mould assembling action structure design.It is similarly the precision of raising matched moulds, as shown in figure 3, first mould Tool 1 can mutual chimeric the first positioning block structure 82 with being respectively equipped with the second mould 2.

Further, as shown in FIG., first mould 1 is convex on the first outside plate 11 including the first outside plate 11, projection Module 12 and matching are set in stripper plate 13 around convex module 12, the convex module 12 and stripper plate 13 dorsad the first outside plate 11 One side structure constitute the one side structure of moulding, that is, constitute the structure of moulding die cavity 4, the stripper plate 13 and first The isolating construction 14 that both are automatically separated can be made when between outside plate 11 provided with the demoulding, because material hole 5 described in the present embodiment is set Put on the first mould, so moulding is bonded on the first mould when being molded after injection molding, therefore pass through isolating construction 14 can go out moulding from automatic demoulding on the first mould 1.In the present embodiment, as shown in FIG., the tool of the isolating construction 14 Body structure includes correspondence and is opened in the first outside plate 11, stripper plate 13, the second mould 2, spacer block 73, fixed plate 71 and movable plate 72 On sliding eye 141 and through the pull bar 142 in all sliding eyes 141, the slip on 13 plates of the demoulding and the second mould 1 The diameter in hole 141 is less than the diameter of other sliding eyes 141；The two ends of the pull bar 142 are respectively equipped with pulling ring 1421, described to draw The diameter of rotating ring 1421 is more than the diameter of the sliding eye 141 on the mould 2 of stripper plate 13 and second, straight less than other sliding eyes 141 Footpath, after being separated to certain distance in die sinking, one end of pull bar 142 can be pushed up on the second mould 2, and the other end can withstand on stripper plate 13 On, because stripper plate 13 is a part for composition injection die cavities 4, i.e., it is connected with the edge of moulding, and be the direction of the demoulding, Therefore it is further continued for also can just pulling stripper plate 13 to separate with the first outside plate 11 during die sinking separation, realization is by moulding from first On mould 1 under automatic demoulding, so that it may take out moulding, the structure can also cause the first mould 1 and the second mould 2 to connect all the time Connect, that is, also connected after molding by pull bar 142, this is also beneficial to fast accurate matched moulds.

Further, it is the separating distance of the limitation outside plate 11 of stripper plate 13 and first, as shown in Figure 5, first outside plate 11st, the second positioning guiding structure 83 constituted between the mould 2 of stripper plate 13 and second provided with pilot hole and guide rod, described second The fixing end of the guide rod of positioning guiding structure 83 is arranged on the first outside plate 11, and its other end, which is provided with, can prevent stripper plate 13 from taking off The structure gone out, also has the structure setting to be conducive to the separating distance of the first tool 1 and the second mould 2 to be easy to take out moulding, i.e., When under moulding being stripped from the first mould 1, stripper plate 13 will not so facilitate taking-up note very close to the second mould 2 Plastic.

Further, as shown in fig. 6, being additionally provided with tension structure 9 between the mould 2 of first mould 1 and second.For entering one Pulling force when walking tight ness rating when improving mould matched moulds and die sinking being provided.The concrete structure of tension structure 9 described in the present embodiment As shown in FIG., including be opened on the second mould 2 plug hole 91, be opened on stripper plate 13 and the corresponding glue in plug hole 91 Through hole 92, nylon plug 93 and lead screw 94 are filled in, the nylon plug 93 is located in plug hole 91 and plug through hole 92, and it is worn The one end being located on the second mould 2 is provided with screw hole 931, and its other end locks on the first outside plate 1 through plug through hole 92, institute A diameter of diminishing structure for head one end rearwardly one end of lead screw 94 is stated, the lead screw 94 is screwed togather into screw In hole 931, the swell diameter of nylon plug 93 can be fitted tightly on the side wall of plug hole 91, the diameter after the swell of nylon plug 93 When more than plug hole 91 diameter, but be due to that nylon plug 93 has certain softness, can be pressed into plug hole during matched moulds firmly In 91, so also make it that therefore tight ness rating between the two is higher, also can produce pulling force, so as to realize above-mentioned work in die sinking With the pore structure for that can lead to outside shown in the above-mentioned figure of plug hole 91 is conducive to nylon plug 93 during matched moulds to be pressed into plug The air discharge in plug hole 91 is compressed during hole 91, is easy to matched moulds.

In the present embodiment, as shown in figure 4, being respectively equipped with can mutually be fitted together to on the outside plate 11 of the stripper plate 13 and first Two positioning block structures 84, the structure setting and the structure setting of the first positioning block structure 82 on the first mould 1 and the second mould 2 Effect is identical, to improve the precision of matched moulds.

In the present embodiment, as shown in figure 1, the mould 2 of first mould 1 and second tool between side wall on be additionally provided with locking part 10, the close of matched moulds is improved in the two ends of the locking part 10 respectively by screw locking on the first outside plate 11 and the second mould 2 Degree and fastening structure, prevent the situation for occurring influence moulding injection effect during injection from occurring, before die sinking after moulding Need first to dismantle down locking part just be molded.

Release method during above-mentioned mould die sinking is described below in detail, automatic demoulding step of the injection molding after cooling is such as Under, 1), release to the pressure of movable plate, movable plate is separated with fixed plate, form the space that confession axostylus axostyle is exited；In the present invention If movable plate is pushed down by the structure of injection machine, it is to remove machinery to movable plate to release to the pressure of movable plate The structure of pressure.

2) rotating drive mechanism, is started, the rotation for driving axostylus axostyle by rotating drive mechanism makes thread core exit injection Part realizes that automatic core-pulling is acted.

3), the first mould and the second mould opposite direction are separated by injection machine, now moulding is bonded in On one mould.

4), continue to separate the first mould and the second mould, until the pull bar of isolating construction pulls demoulding block by itself and first Outside plate is separated, and stripper plate pushes down the edge of moulding during separation, so as under moulding is departed from from convex module, realize automatic The demoulding.

Above-described embodiment and schema and non-limiting product form of the invention and style, any art it is common Appropriate change or modification that technical staff is done to it, all should be regarded as not departing from the patent category of the present invention.

Claims (10)

1. have the moulding mould of internal thread, it is characterised in that：Including the first mould, the second mould and axostylus axostyle, second mould Tool offers the first through hole matched with axostylus axostyle, and the axostylus axostyle is rotatable to be located in first through hole with what is slided, the axle One end of bar is through the second mould and provided with thread core, and the thread core merges composition note with the first mould, the second mould The injection die cavities of plastic, first mould or the second mould are provided with the material hole led in injection die cavities.

2. have the moulding mould of internal thread as claimed in claim 1, it is characterised in that：The axostylus axostyle connection rotates driving machine Structure, the automatic core-pulling of thread core when the demoulding can be achieved is rotated by rotating drive mechanism driving axostylus axostyle.

3. have the moulding mould of internal thread as claimed in claim 2, it is characterised in that：The mould also includes for limiting The axostylus axostyle limiting structure of dead axle bar action.

4. have the moulding mould of internal thread as claimed in claim 3, it is characterised in that：The axostylus axostyle limiting structure includes solid Fixed board, movable plate, spacer block and mobile link structure, fixed plate correspondence axostylus axostyle offer the passed through for the axostylus axostyle other end Two through holes, the spacer block is arranged between the second mould and fixed plate and three locks together, and the movable plate is by moving The outside that dynamic attachment structure is arranged on fixed plate can withstand axle end, and the mobile link structure includes being opened on movable plate Counterbore, the third through-hole being opened in fixed plate, spring and bolt, the bolt is through counterbore and third through-hole and end lock Gu on spacer block, the bolt head of the bolt not may pass through counterbore, and the spring is set on bolt and is embedded in threeway In hole and two ends are withstood on spacer block and movable plate respectively, and the movable plate can realize phase by pressure and spring tension respectively To fixed plate laminating and separate mobile, the gear of the rotating drive mechanism is correspondingly arranged between the second mould and fixed plate In clearance space.

5. have the moulding mould of internal thread as claimed in claim 4, it is characterised in that：The movable plate and fixed plate, The first positioning guiding structure constituted between spacer block, the second mould, the first mould provided with pilot hole and guide rod, the guide rod Fixing end be arranged on movable plate.

6. have the moulding mould of internal thread as claimed in claim 5, it is characterised in that：First mould is included outside first The convex module and matching of plate, projection on the first outside plate are set in the stripper plate around convex module, the convex module and stripper plate Dorsad the one side structure of the first outside plate constitutes the one side structure of moulding, provided with de- between the stripper plate and the first outside plate The isolating construction that when mould both can be automatically separated, so that moulding be gone out from automatic demoulding on the first mould.

7. have the moulding mould of internal thread as claimed in claim 6, it is characterised in that：The isolating construction includes correspondence and opened It is located at the first outside plate, stripper plate, the second mould, spacer block, fixed plate and sliding eye on movable plate and is slided through all The diameter of pull bar in hole, the stripper plate and the sliding eye on the second mould is less than the diameter of other sliding eyes；The pull bar Two ends be respectively equipped with pulling ring, the pulling ring diameter is more than the diameter of stripper plate and the sliding eye on the second mould, is less than The diameter of other sliding eyes, so as to pull stripper plate to be separated with the first outside plate.

8. have the moulding mould of internal thread as claimed in claim 7, it is characterised in that：First outside plate, stripper plate and The second positioning guiding structure for being constituted between second mould provided with pilot hole and guide rod, second positioning guiding structure is led It is arranged on to the fixing end of bar on the first outside plate, its other end is provided with the structure that can prevent that stripper plate from deviating from.

9. have the moulding mould of internal thread as claimed in claim 8, it is characterised in that：First mould and the second mould Between be additionally provided with tension structure, plug hole that the tension structure includes being opened on the second mould, be opened on stripper plate with The corresponding plug through hole in plug hole, nylon plug and lead screw, the nylon plug are located in plug hole and plug through hole, its The one end being located on the second mould is provided with screw hole, and its other end locks on the first outside plate through plug through hole, the spiral shell A diameter of diminishing structure for head one end rearwardly one end of screw mandrel, the lead screw is screwed togather into screw hole, can Nylon plug swell diameter is fitted tightly on the wall of plug hole side.

10. the release method of the moulding mould of the tool internal thread as described in claim 6-10 any one, it is characterised in that： Automatic demoulding step of the injection molding after cooling is as follows, 1) pressure to movable plate, is released, movable plate is separated with fixed plate Open, form the space exited for axostylus axostyle；

2), start rotating drive mechanism, drive the rotation of axostylus axostyle thread core is exited moulding and realize that automatic core-pulling is acted；

3), the first mould and the second mould opposite direction are separated, now moulding is bonded on the first mould；

4), continue to separate the first mould and the second mould, until isolating construction pulls demoulding block to separate it with the first outside plate, Stripper plate pushes down the edge of moulding during separation, so as under moulding is departed from from convex module, realize automatic demoulding.