CN108724631B

CN108724631B - Take multiple demoulding mechanism's injection mold

Info

Publication number: CN108724631B
Application number: CN201810493482.7A
Authority: CN
Inventors: 郑子军; 肖国华; 沈忠良; 高云霄; 尤建国; 祝理君
Original assignee: Zhejiang Business Technology Institute
Current assignee: DONGGUAN BEIYU ELECTRONIC SCIENCE & TECHNOLOGY CO.,LTD.
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2020-06-09
Anticipated expiration: 2038-05-22
Also published as: CN108724631A

Abstract

The invention relates to the technical field of molds, in particular to an injection mold with multiple demolding mechanisms, which comprises an upper template (1), a lower template (2), a first concave module (3) and a second concave module (4); the first punch (9) comprises a first punch body (11), a first insert (12) and a third insert (13), and the second punch (10) comprises a second punch body (14), a second insert (15) and a fourth insert (16); the bottom of the first concave module (3) is fixedly connected with a bottom core-pulling mechanism; a side surface inclined ejection mechanism is arranged on the second concave module (4) and the mounting plate (7); after the structure is adopted, the injection mold is provided, wherein the insert can exit from the inner wall sink groove and be unhooked from the first barb and the second barb in the mold opening process, and each demolding mechanism is reasonable in installation position, so that the injection mold is compact in structure, simple, effective in resource utilization and capable of realizing two-mold demolding.

Description

Take multiple demoulding mechanism's injection mold

Technical Field

The invention relates to the technical field of molds, in particular to an injection mold with various demolding mechanisms.

Background

Injection molds often require the design of the mold structure according to the structural characteristics of the product. In actual production, products having such characteristics are often encountered that the mold release difficulty is large.

In some products, as shown in fig. 1, the product 001 is in a circular tube shape, an inner wall sunken groove 006 is formed in a side wall of an inner hole 002 of the product 001, and after injection molding, an insert is inserted into the inner wall sunken groove, and the insert cannot exit from the inner wall sunken groove by directly jacking up the product with an ejector pin, so that demolding cannot be performed.

In other products, as shown in fig. 2, a flat groove 003 is formed on the outer circumferential surface of a product 001, a first barb 004 and a second barb 005 which are oppositely arranged are formed on two side walls of the flat groove 003, the first barb 004 and the second barb 005 are generally formed by an insert during injection molding, and after the molding, the insert is hooked with the first barb 004 and the second barb 005, so that the first barb 004 and the second barb 005 are destroyed by directly laterally opening the mold during demolding, and therefore, how to design a demolding mechanism for unhooking the insert from the first barb 004 and the second barb 005 during mold opening is a problem which needs to be solved urgently.

However, the above-mentioned structural difficulties are sometimes concentrated on the same product, as shown in fig. 3, and the number of the inner wall sunken grooves on one product is 2 and is set at 180 °, and in order to improve the production efficiency, the mold is generally designed to have two dies, and the first product has the first inner wall sunken groove and the second inner wall sunken groove; the second product also has a first inner wall sink groove and a second inner wall sink groove, so that a mold with two dies is designed in a limited mold product space, and a demolding mechanism is designed, which is a problem to be solved urgently.

Disclosure of Invention

The present invention is directed to solving at least one of the above-mentioned problems.

The invention aims to solve the technical problem of providing the injection mold with multiple demolding mechanisms, which can enable an insert to exit from an inner wall sink groove and enable the insert to be unhooked from a first barb and a second barb when the mold is opened, has reasonable installation positions of the demolding mechanisms, achieves compact and simple structure, effectively utilizes resources, and can realize two-mold demolding.

In order to solve the technical problem, the injection mold with the multiple demolding mechanisms comprises an upper mold plate, a lower mold plate, a first concave module and a second concave module, wherein the upper mold plate and the lower mold plate are connected in a sliding mode through guide pillars; the middle part of the upper template is provided with a wedge-shaped cavity, a mounting plate is fixed in the wedge-shaped cavity, the first female die block and the second female die block are both in sliding connection with the upper template, spring parts which are abutted to the mounting plate to drive the first female die block and the second female die block to open or close are respectively arranged in the first female die block and the second female die block, the lower template is fixedly connected with a first male die and a second male die, a die cavity is formed by the first female die block and the second female die block when the first female die block and the second female die block are closed, the first male die comprises a first male die body, a first insert and a third insert, and the first insert and the third insert are both in sliding connection with the lower template; the second male die comprises a second male die body, a second insert and a fourth insert, and the second insert and the fourth insert are both in sliding connection with the lower die plate; the bottom of the first female die block is fixedly connected with a bottom core-pulling mechanism which is used for driving the first insert to retract towards the interior of the first male die body and the second insert to retract towards the interior of the second male die body when the die is opened; the bottom of the upper template is fixedly connected with a first inclined sliding block core pulling mechanism for driving a third insert to retract towards the interior of the first male die body during die opening; the bottom of the upper template is fixedly connected with a second inclined sliding block core pulling mechanism for driving a fourth insert to retract towards the interior of the second male die body during die opening;

the second die block is provided with a convex-shaped abdicating groove, the second concave module is provided with a first insert abdicating groove and a second insert abdicating groove which are arranged in a shape like Chinese character 'ba' at the corresponding positions of the first convex die and the second convex die, the first insert abdicating groove and the second insert abdicating groove are arranged in parallel to the surface of the lower template, a first insert is inserted in the first insert abdicating groove, a second insert is inserted in the second insert abdicating groove, and the second concave module and the mounting plate are provided with side inclined ejection mechanisms which are matched with each other so as to enable the inward end part of the first insert to be close to the inward end part of the second insert during demoulding.

After adopting above-mentioned scheme, have following advantage: the bottom core-pulling mechanism is arranged, so that the first insert is driven to retract towards the inside of the first male die body and the second insert retracts towards the inside of the second male die body during die opening, the limit of the first insert and the second insert on the inner wall sink groove of a product during die opening can be relieved, the product with the inner wall sink groove is smoothly demoulded, the bottom core-pulling mechanism is fixedly connected with the bottom of the first female die block according to the layout of dies with two dies, namely the first female die block gives the driving force to the bottom core-pulling mechanism during die opening, the first female die block is skillfully used, a driving component for driving the bottom core-pulling mechanism is not required to be additionally arranged, the first female die block and the bottom core-pulling mechanism are skillfully combined, and the advantages of compact and simple structure and effective utilization of resources are achieved;

the upper template is skillfully used without additionally arranging a driving component for driving the first inclined slide block core pulling mechanism and the second inclined slide block core pulling mechanism, and is skillfully combined with the first inclined slide block core pulling mechanism and the second inclined slide block core pulling mechanism, so that the advantages of compact and simple structure and effective utilization of resources are achieved;

the first insert abdicating groove and the second insert abdicating groove which are arranged in the shape of the Chinese character 'ba' can enable the inward end part of the first insert to be close to the inward end part of the second insert when demoulding, so that the limitation of the first insert and the second insert on the first barb and the first barb at the side part of the product when mould opening is carried out, the product with the barb is demoulded smoothly, and the side inclined ejection mechanism is arranged on the second concave module and the mounting plate, thereby achieving the advantages of compact and simple structure and effective resource utilization;

to sum up, this application does not need extra drive power just can make each mechanism drawing of patterns when the die sinking to each mechanism mounted position is reasonable, reaches compact structure simple, effectively utilizes the advantage of resource, and is different with prior art's demoulding mechanism, has produced new demoulding mechanism, has apparent progress.

Drawings

Fig. 1-3 are schematic views of structures of products to be injection molded.

Fig. 4 is a schematic structural diagram of an injection mold with multiple demolding mechanisms according to the present application.

Fig. 5 is an exploded view of an injection mold with multiple mold release mechanisms according to the present application.

FIG. 6 is a schematic diagram of an exploded structure of the lower mold plate of the injection mold with various demolding mechanisms.

FIG. 7 is a schematic diagram of a bottom core-pulling mechanism in an injection mold of the present application with various ejection mechanisms.

Fig. 8 is an exploded view of a side lifter mechanism in an injection mold with multiple mold-releasing mechanisms according to the present application.

Fig. 9 is a partially cut structure diagram of a second female mold block in an injection mold with various demolding mechanisms according to the present application.

Fig. 10 is an exploded view of the first and second mounting blocks of the injection mold with multiple demolding mechanisms according to the present invention.

Fig. 11 is a top view of an injection mold with multiple ejection mechanisms according to the present application.

Fig. 12 is a schematic cross-sectional view taken at a-a in fig. 11.

Fig. 13 is a schematic sectional view at B-B in fig. 11.

Wherein:

1. mounting a template; 2. a lower template; 3. a first female die block; 4. a second female die block; 5. a guide post; 6. a wedge-shaped cavity; 7. mounting a plate; 8. a spring member; 9. a first male die; 10. a second male die; 11. a first male die body; 12. a first insert; 13. a third insert; 14. a second male die body; 15. a second insert; 16. a fourth insert; 17. the concave groove is shaped like a Chinese character 'tu'; 18. a first insert abdicating groove; 19. a second insert abdicating groove; 20. a first insert; 21. a second insert; 22. a first embedding part; 23. a first slider portion; 24. a second embedding part; 25. a second slider portion; 26. a pressure spring; 27. a first driving block; 28. a second driving block; 29. a first abdicating groove; 30. a second abdicating groove; 31. a first swash block; 32. a first inclined slot; 33. a second swash block; 34. a second inclined slot; 35. a first chute; 36. a limiting step; 37. an installation table; 38. a limiting block; 39. a first mounting block; 40. a second mounting block; 41. a first insert mounting groove; 42. a first limit hole; 43. a first trench; 44. a second insert mounting groove; 45. a second limiting hole; 46. a second trench; 47. a first limit pin; 48. a second limit pin; 49. mounting a step; 50. a cover plate; 51. an activity space; 52. a first spring; 53. a second spring; 54. mounting holes; 55. a hole of abdication; 56. the spring is tightly propped; 57. a convex arc-shaped groove wall; 58. a concave arc-shaped side wall; 59. a T-shaped groove; 60. a T-shaped slider; 61. a third embedding part; 62. a third slider portion; 63. a third driving block; 64. a third swash block; 65. a third inclined slot; 66. a fourth inlay portion; 67. a fourth slider portion; 68. a fourth drive block; 69. a fourth swash block; 70. a fourth inclined slot; 71. a second chute; 72. a first sink tank; 73. a first stud; 74. a third spring; 75. a third chute; 76. a second sink tank; 77. a second stud; 78. and a fourth spring.

Detailed Description

The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of their inclusion to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. A component, step, or element from one embodiment may be assumed to be present or used in another embodiment. The particular embodiments shown and described may be substituted for a wide variety of alternate and/or equivalent implementations without departing from the scope of the embodiments of the present disclosure. This application is intended to cover any adaptations or variations of the embodiments discussed herein. It will be apparent to those skilled in the art that alternative embodiments may be practiced using only some of the described aspects. Specific numbers, materials, and configurations are set forth in the examples for the purpose of illustration, however, alternative examples may be practiced by those skilled in the art without these specific details. In other instances, well-known features may be omitted or simplified in order not to obscure the illustrative embodiments.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "provided", "mounted", "connected" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the term "fixed" may be a bolted and/or screwed connection and/or a snap and/or a weld, which term is understood by a person skilled in the art as a matter of fact to have a special meaning in the present invention.

Referring to fig. 4-13, in one embodiment, an injection mold with multiple demolding mechanisms comprises an upper mold plate 1, a lower mold plate 2, a first female mold block 3 and a second female mold block 4, wherein the upper mold plate 1 and the lower mold plate 2 are slidably connected through guide pillars 5; the middle part of the upper template 1 is provided with a wedge-shaped cavity 6, a mounting plate 7 is fixed in the wedge-shaped cavity 6, the first concave module 3 and the second concave module 4 are both connected with the upper template 1 in a sliding manner, the first concave module 3 and the second concave module 4 are both provided with a spring part 8 which is abutted against the mounting plate 7 to drive the first concave module 3 and the second concave module 4 to be opened or closed, the lower template 2 is fixedly connected with a first male die 9 and a second male die 10, and the first concave module 3 and the second concave module 4 form a die cavity with the first male die 9 and the second male die 10 when being closed.

Referring to fig. 6, the first punch 9 comprises a first punch body 11, a first insert 12 and a third insert 13, and both the first insert 12 and the third insert 13 are slidably connected with the lower die plate 2; the second punch 10 comprises a second punch body 14, a second insert 15 and a fourth insert 16, and both the second insert 15 and the fourth insert 16 are connected with the lower template 2 in a sliding manner; the bottom of the first female die block 3 is fixedly connected with a bottom core-pulling mechanism which is used for driving the first insert 12 to retract towards the interior of the first male die body 11 and the second insert 15 to retract towards the interior of the second male die body 14 during die opening; the bottom of the upper template 1 is fixedly connected with a first inclined slide block core-pulling mechanism for driving the third insert 13 to retract towards the interior of the first male die body 11 during die opening; the bottom of the upper template 1 is fixedly connected with a second inclined sliding block core-pulling mechanism for driving a fourth insert 16 to retract towards the interior of the second male die body 14 during die opening;

referring to fig. 8, the second cavity block 4 has a "convex" shape receding groove 17, the second cavity block 4 has a first insert receding groove 18 and a second insert receding groove 19 which are arranged in a shape of a Chinese character 'ba' at positions corresponding to the first punch 9 and the second punch 10, the first insert receding groove 18 and the second insert receding groove 19 are arranged in parallel to the surface of the lower mold plate 2, a first insert 20 is inserted into the first insert receding groove 18, a second insert 21 is inserted into the second insert receding groove 19, and side lifter mechanisms which are matched with each other so as to bring an inward end of the first insert 20 and an inward end of the second insert 21 close to each other are arranged on the second cavity block 4 and the mounting plate 7.

The bottom core-pulling mechanism is arranged, so that the first insert 12 is driven to retract towards the inside of the first male die body 11 and the second insert 15 retracts towards the inside of the second male die body 14 during die opening, the limit of the first insert 12 and the second insert 15 on the inner wall sink of a product during die opening can be relieved, the product with the inner wall sink can be smoothly demoulded, the bottom core-pulling mechanism is arranged to be fixedly connected with the bottom of the first concave module 3 according to the layout of two dies of one die, namely the first concave module 3 gives the driving force of the bottom core-pulling mechanism during die opening, the first concave module 3 is skillfully used, a driving component for driving the bottom core-pulling mechanism is not required to be additionally arranged, the first concave module 3 and the bottom core-pulling mechanism are skillfully combined, and the advantages of compact and simple structure and effective utilization of resources are achieved;

the upper template 1 is skillfully used without additionally arranging a driving component for driving the first inclined slide block core pulling mechanism and the second inclined slide block core pulling mechanism, the upper template 1 is skillfully combined with the first inclined slide block core pulling mechanism and the second inclined slide block core pulling mechanism, and the advantages of compact and simple structure and effective utilization of resources are achieved;

the first insert abdicating groove 18 and the second insert abdicating groove 19 which are arranged in the shape of the Chinese character 'ba' can enable the inward end part of the first insert 20 to be close to the inward end part of the second insert 21 when demoulding is carried out, so that the limitation of the first insert 20 and the second insert 21 on the first barb and the first barb at the side part of the product when the mould is opened can be eliminated, the product with the barb is demoulded smoothly, and the side surface inclined ejection mechanism is arranged on the second concave mould block 4 and the mounting plate 7, so that the advantages of compact and simple structure and effective utilization of resources are achieved;

on the basis of adopting the technical scheme, the method can also have the following technical characteristics: referring to fig. 6, 7 and 12, the first insert 12 comprises a first insert part 22 slidably connected with the first punch body 11 and a first slide block part 23 slidably connected with the lower die plate 2, and the first slide block part 23 is integrally connected with the first insert part 22; the first inlay portion 22 is used to form a first inner wall sink of a first product; the second punch 10 comprises a second punch body 14 and a second insert 15, the second insert 15 comprises a second embedded part 24 connected with the second punch body 14 in a sliding manner and a second slide block part 25 connected with the lower template 2 in a sliding manner, and the second slide block part 25 and the second embedded part 24 are connected into a whole; the second insert portions 24 are used to form a first inner wall sink of the second product; the first insert 12 and the second insert 15 are arranged oppositely, the first insert 12 and the second insert 15 are positioned between the first punch body 11 and the second punch body 14, a compression spring 26 is arranged between the first insert 12 and the second insert 15, and the compression spring 26 is used for enabling the first insert 12 and the second insert 15 to have thrust forces moving towards the first punch body 11 and the second punch body 14 respectively; the bottom core pulling mechanism comprises a first driving block 27 fixed at the bottom of the first concave module 3 and used for driving the first sliding block part 23 to slide back and forth and a second driving block 28 used for driving the second sliding block part 25 to slide back and forth, a first abdicating groove 29 and a second abdicating groove 30 are respectively arranged on the lower template 2 and at positions corresponding to the first driving block 27 and the second driving block 28, the first driving block 27 is slidably connected in the first abdicating groove 29, the second driving block 28 is slidably connected in the second abdicating groove 30, a first oblique block 31 is arranged on the side surface of the first driving block 27, a first oblique slot 32 is arranged on the first sliding block part 23, the first oblique block 31 is slidably connected with the first oblique slot 32, a second oblique block 33 is arranged on the side surface of the second driving block 28, a second oblique slot 34 is arranged on the second sliding block part 25, the second oblique block 33 is slidably connected with the second oblique slot 34, the sliding directions of the first slider part 23 and the second slider part 25 are on the same straight line, the sliding directions of the first driving block 27 and the second driving block 28 are the same and are perpendicular to the sliding direction of the first slider part 23, and the sliding direction of the first driving block 27 is the same as the moving direction of the first female module 3 and the second female module 4 when opening the mold. In combination with these technical features, the arrangement that the first insert 12 and the second insert 15 are located between the first punch body 11 and the second punch body 14 can effectively utilize the space between the first punch body 11 and the second punch body 14, thereby making the structure compact; the axes of the first oblique block 31, the first oblique slot 32, the second oblique block 33 and the second oblique slot 34 deviate from the moving direction of the first concave module 3 and the second concave module 4 during die opening, when the die opening is performed, the first concave module 3 drives the first driving block 27 and the second driving block 28 to move, the first oblique block 31 is in sliding connection with the first oblique slot 32, the second oblique block 33 is in sliding connection with the second oblique slot 34 so as to drive the first embedding part 22 and the second embedding part 24 to slide, the first embedding part 22 moves towards the first male die body 11, and the second embedding part 24 moves towards the second male die body 14, so that the die releasing is realized.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: the lower template 2 is provided with a first sliding groove 35, and the first sliding block part 23 and the second sliding block part 25 are both positioned in the first sliding groove 35. After the technical characteristics are combined, because the first sliding block part 23 and the second sliding block part 25 are both positioned in the first sliding groove 35, on one hand, the sliding directions of the first sliding block part 23 and the second sliding block part 25 can be ensured to be the same, on the other hand, the processing is convenient, and the compact structure of the die is ensured. The side surfaces of the first sliding block portion 23 and the second sliding block portion 25 are provided with limiting steps 36, one side of the first sliding groove 35 is provided with an installation table 37, and a limiting block 38 used for limiting the first sliding block portion 23 and the second sliding block portion 25 is fixed on the installation table 37. After the technical characteristics are combined, the first sliding block part 23 and the second sliding block part 25 are limited in the first sliding groove 35 to slide, so that the stability of the first sliding block part 23 and the second sliding block part 25 in working is ensured.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: referring to fig. 8, 9 and 10, the side surface pitched roof mechanism means that a first mounting block 39 and a second mounting block 40 which keep positions immovable when the second concave module 4 is opened are arranged in the protruding yielding groove 17, the first mounting block 39 is provided with a first insert mounting groove 41 and a first limiting hole 42, one end of the first insert 20 is clamped in the first insert mounting groove 41 and can swing relative to the first insert mounting groove 41, and the other end of the first insert 20 is provided with a first groove 43 for forming a first barb of a product; a second insert mounting groove 44 and a second limiting hole 45 are formed in the second mounting block 40, one end of the second insert 21 is clamped in the second insert mounting groove 44 and can swing relative to the second insert mounting groove 44, and a second groove 46 for forming a second barb of the product is formed in the other end of the second insert 21; be fixed with first spacing pin 47 and second spacing pin 48 on the mounting panel 7, the axis of first spacing pin 47 and second spacing pin 48 is the same with mounting panel 7's direction of motion, first spacing pin 47 is pegged graft with first spacing hole 42, second spacing pin 48 is pegged graft with second spacing hole 45. After the technical characteristics are combined, when the second concave module 4 is opened, the upper template 1 drives the mounting plate 7 to move, the first limiting pin 47 and the second limiting pin 48 move along with the first concave module, and because the axes of the first limiting pin 47 and the second limiting pin 48 are the same as the moving direction of the mounting plate 7, the first limiting pin 47 and the second limiting pin 48 only move in the own axis direction, and the first mounting block 39 and the second mounting block 40 do not move along with the first limiting pin 47 and the second limiting pin 48; the mold opening direction of the second concave mold block 4 is perpendicular to the movement direction of the mounting plate 7, the first limiting pin 47 is inserted into the first limiting hole 42, the second limiting pin 48 is inserted into the second limiting hole 45, and the first mounting block 39 and the second mounting block 40 can be limited to move along with the mold opening of the second concave mold block 4, namely the first insert 20 and the second insert 21 do not move along with the movement of the second concave mold block 4 in the mold opening direction, and the first insert abdicating groove 18 and the second insert abdicating groove 19 are arranged in an 'eight' shape, so that when the second concave mold block 4 is opened, the end parts of the first insert 20 and the second insert 21 swing to enable the end part of the first insert 20 to be close to the end part of the second insert 21, so that the limitation on the side barb of the product can be relieved.

The distance between the first insert 20 and the second insert 21 decreases from the outer end to the inner end.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: two lateral walls department of "protruding" font groove 17 of stepping down are equipped with installation step 49, fixedly connected with apron 50 on the installation step 49, apron 50 with the bottom surface formation of "protruding" font groove 17 of stepping down supplies first installation piece 39 and second installation piece 40 for the activity space 51 of the motion of second concave module 4. With these technical features, the first mounting block 39 and the second mounting block 40 move in the movable space 51 relative to the second die block 4, so as to ensure the stability of the first mounting block 39 and the second mounting block 40 when the second die block 4 moves.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: a first spring 52 is arranged between the first mounting block 39 and the side wall of one side of the 'convex' abdicating groove 17 facing the center of the mould; the first spring 52 is used for tightly abutting the first limit pin 47 with the first limit hole 42; and a second spring 53 is arranged between the second mounting block 40 and the side wall of the side, facing the center of the die, of the 'convex' abdicating groove 17, and the second spring 53 is used for abutting the second limiting pin 48 against the second limiting hole 45. The first spring 52 and the second spring 53 are used for ensuring that the first limiting pin 47 is tightly abutted with the first limiting hole 42, and the second limiting pin 48 is tightly abutted with the second limiting hole 45, so that the first mounting block 39 and the second mounting block 40 are stable.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: referring to fig. 13, it means that first spacing pin 47 and second spacing pin 48 are fixed on mounting panel 7, be equipped with mounting hole 54 on the mounting panel 7, on cope match-plate pattern 1 and be equipped with at mounting hole 54 position department and step down hole 55, first spacing pin 47 and second spacing pin 48 pass mounting hole 54 and set up, it is equipped with in the hole 55 to be used for abutting against tight spring 56 with first spacing pin 47 and second spacing pin 48. Thus, the first stopper pin 47 and the second stopper pin 48 can be mounted easily, and the manufacturing cost can be reduced.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: referring to fig. 10, both groove walls of the first insert-mounting groove 41 and both groove walls of the second insert-mounting groove 44 are convex arc-shaped groove walls 57, and correspondingly, both side walls of the end portion of the first insert 20 and both side walls of the end portion of the second insert 21 are concave arc-shaped side walls 58. Thus, the engagement of the convex arc groove wall 57 with the concave arc side wall 58 can make the swing more stable and smooth.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: first concave mould piece 3 and second concave mould piece 4 all with cope match-plate pattern 1 sliding connection mean, the side of first concave mould piece 3 and second concave mould piece 4 is the wedge, the side of first concave mould piece 3 and second concave mould piece 4 all is equipped with T type groove 59, cope match-plate pattern 1 just is fixed with T type slider 60 in T type groove 59 position department, T type slider 60 and T type groove 59 sliding connection. The matching of the T-shaped sliding block 60 and the T-shaped groove 59 can enable the movement track of the first concave module 3 and the second concave module 4 to be unique when the molds are opened and closed, and the use stability of the molds is ensured.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: referring to fig. 6 and 12, the third insert 13 comprises a third insert part 61 slidably connected with the first punch body 11 and a third slide block part 62 slidably connected with the lower die plate 2, and the third slide block part 62 and the third insert part 61 are connected into a whole; the third insert 61 is used to form a second inner wall sink of the first product; the first inclined sliding block core pulling mechanism comprises a third driving block 63 which is arranged at the bottom of the upper template 1 and used for driving a third sliding block part 62 to slide back and forth, a third inclined block 64 is arranged on the side face of the third driving block 63, a third inclined slot 65 is arranged on the third sliding block part 62, the third inclined block 64 is connected with the third inclined slot 65 in a sliding mode, the sliding direction of the third sliding block part 62 is perpendicular to the moving direction of the first concave module 3 and the second concave module 4 during mold opening, and the moving direction of the third driving block 63 is perpendicular to the surface of the lower template 2;

the fourth insert 16 comprises a fourth insert part 66 connected with the second punch body 14 in a sliding manner and a fourth slider part 67 connected with the lower template 2 in a sliding manner, and the fourth slider part 67 and the fourth insert part 66 are connected into a whole; the fourth insert 66 is used to form a second inner wall sink of the second product; the second inclined sliding block core pulling mechanism comprises a fourth driving block 68 which is arranged at the bottom of the upper template 1 and used for driving a fourth sliding block part 67 to slide back and forth, a fourth inclined block 69 is arranged on the side face of the fourth driving block 68, a fourth inclined slot 70 is formed in the fourth sliding block part 67, the fourth inclined block 69 is connected with the fourth inclined slot 70 in a sliding mode, the sliding direction of the fourth sliding block part 67 is perpendicular to the moving direction of the first concave module 3 and the second concave module 4 during mold opening, and the moving direction of the fourth driving block 68 is perpendicular to the surface of the lower template 2.

After the technical schemes are combined, the upper die plate 1 moves to drive the third driving block 63 and the fourth driving block 68 to move, the third inclined block 64 is connected with the third inclined slot 65 in a sliding manner, the fourth inclined block 69 is connected with the fourth inclined slot 70 in a sliding manner to drive the third sliding block part 62 and the fourth sliding block part 67 to slide, so that the third embedding part 61 and the fourth embedding part 66 move towards the first male die body 11 and the second male die body 14 respectively, and the product with the inner wall sunken groove is smoothly demolded.

On the basis of adopting the technical scheme, the method can also have the following technical characteristics: a second sliding groove 71 is formed in the lower template 2 at the position of the third sliding block part 62, the third sliding block part 62 is located in the second sliding groove 71, a first sinking groove 72 is formed in the bottom of the second sliding groove 71, a first convex nail 73 is arranged at the bottom of the third sliding block part 62, a third spring 74 is arranged between the first convex nail 73 and the groove wall of the first sinking groove 72, and the third spring 74 provides thrust of the third sliding block part 62 to the direction of the first male die body 11; the lower die plate 2 is provided with a third sliding groove 75 at the position of the fourth sliding block portion 67, the fourth sliding block portion 67 is located in the third sliding groove 75, a second sinking groove 76 is formed in the bottom of the third sliding groove 75, a second convex pin 77 is arranged at the bottom of the fourth sliding block portion 67, a fourth spring 78 is arranged between the second convex pin 77 and the groove wall of the second sinking groove 76, and the fourth spring 78 provides thrust of the fourth sliding block portion 67 to the direction of the second male die body 14. Thus, the third slider portion 62 and the fourth slider portion 67 have a sliding thrust by the third spring 74 and the fourth spring 78, and the performance is more stable.

Of course, in this embodiment, the injection mold with multiple demolding mechanisms further includes an ejection mechanism for ejecting the two products, the ejection mechanism includes an ejector pin and the like, and the ejection mechanism is in the prior art, and therefore details are not repeated here.

The above description is only a preferred embodiment of the present invention, and it should not be understood that the scope of the present invention is limited thereby, and it should be understood by those skilled in the art that various other modifications and equivalent arrangements can be made by applying the technical solutions and concepts of the present invention within the scope of the present invention as defined in the appended claims.

Claims

1. An injection mold with multiple demolding mechanisms comprises an upper template (1), a lower template (2), a first concave module (3) and a second concave module (4), wherein the upper template (1) and the lower template (2) are connected in a sliding mode through guide pillars (5); the die is characterized in that a wedge-shaped cavity (6) is arranged in the middle of the upper die plate (1), a mounting plate (7) is fixed in the wedge-shaped cavity (6), the first concave die block (3) and the second concave die block (4) are both in sliding connection with the upper die plate (1), spring pieces (8) which are abutted to the mounting plate (7) to drive the first concave die block (3) and the second concave die block (4) to be opened or closed are arranged in the first concave die block (3) and the second concave die block (4), a first male die (9) and a second male die (10) are fixedly connected with the lower die plate (2), and a die cavity is formed by the first male die (9) and the second male die (10) when the first concave die block (3) and the second concave die block (4) are closed,

the first punch (9) comprises a first punch body (11), a first insert (12) and a third insert (13), and the first insert (12) and the third insert (13) are both in sliding connection with the lower template (2); the second punch (10) comprises a second punch body (14), a second insert (15) and a fourth insert (16), and the second insert (15) and the fourth insert (16) are both in sliding connection with the lower template (2); the bottom of the first concave module (3) is fixedly connected with a bottom core-pulling mechanism which is used for driving a first insert (12) to retract towards the interior of the first male die body (11) and driving a second insert (15) to retract towards the interior of the second male die body (14) when the die is opened; the bottom of the upper template (1) is fixedly connected with a first inclined sliding block core-pulling mechanism for driving a third insert (13) to retract towards the interior of the first male die body (11) during die opening; the bottom of the upper template (1) is fixedly connected with a second inclined slide block core pulling mechanism for driving a fourth insert (16) to retract towards the interior of the second punch body (14) during die opening, the first insert (12) comprises a first embedding part (22) in sliding connection with the first punch body (11) and a first slide block part (23) in sliding connection with the lower template (2), and the first slide block part (23) and the first embedding part (22) are connected into a whole; the second punch (10) comprises a second punch body (14) and a second insert (15), the second insert (15) comprises a second insert part (24) connected with the second punch body (14) in a sliding mode and a second slide block part (25) connected with the lower die plate (2) in a sliding mode, and the second slide block part (25) and the second insert part (24) are connected into a whole; the first insert (12) and the second insert (15) are arranged oppositely, the first insert (12) and the second insert (15) are positioned between the first punch body (11) and the second punch body (14), and a pressure spring (26) is arranged between the first insert (12) and the second insert (15); the bottom core pulling mechanism comprises a first driving block (27) which is fixed at the bottom of a first concave module (3) and used for driving a first sliding block part (23) to slide back and forth and a second driving block (28) which is used for driving a second sliding block part (25) to slide back and forth, a first abdicating groove (29) and a second abdicating groove (30) are respectively arranged at the corresponding positions of the first driving block (27) and the second driving block (28), the first driving block (27) is slidably connected in the first abdicating groove (29), the second driving block (28) is slidably connected in the second abdicating groove (30), a first inclined block (31) is arranged on the side surface of the first driving block (27), a first inclined slot (32) is arranged on the first sliding block part (23), the first inclined block (31) is slidably connected with the first inclined slot (32), and a second inclined block (33) is arranged on the side surface of the second driving block (28), a second inclined slot (34) is formed in the second sliding block part (25), the second inclined block (33) is connected with the second inclined slot (34) in a sliding mode, the sliding directions of the first sliding block part (23) and the second sliding block part (25) are on the same straight line, the sliding directions of the first driving block (27) and the second driving block (28) are the same and are perpendicular to the sliding direction of the first sliding block part (23), and the sliding direction of the first driving block (27) is the same as the moving direction of the first concave module (3) and the second concave module (4) when the mold is opened;

the die is characterized in that the second concave die block (4) is provided with a convex abdicating groove (17), the second concave die block (4) is provided with a first insert abdicating groove (18) and a second insert abdicating groove (19) which are arranged in an eight shape at the corresponding positions of the first convex die (9) and the second convex die (10), the first insert abdicating groove (18) and the second insert abdicating groove (19) are arranged in parallel to the surface of the lower die plate (2), the first insert (20) is inserted in the first insert abdicating groove (18), the second insert (21) is inserted in the second insert abdicating groove (19), the side surface inclined ejecting mechanism which is matched with each other to enable the inward end of the first insert (20) and the inward end of the second insert (21) to be close to each other during demoulding is arranged on the second concave die block (4) and the mounting plate (7), the side surface inclined ejecting mechanism is arranged in the convex abdicating groove (17), and the second concave die opening position of the second concave die (4) is kept immovable The first mounting block (39) is provided with a first insert mounting groove (41) and a first limiting hole (42), one end of the first insert (20) is clamped in the first insert mounting groove (41) and can swing relative to the first insert mounting groove (41), and the other end of the first insert (20) is provided with a first groove (43) for forming a first barb of a product; a second insert mounting groove (44) and a second limiting hole (45) are formed in the second mounting block (40), one end of the second insert (21) is clamped in the second insert mounting groove (44) and can swing relative to the second insert mounting groove (44), and a second groove (46) for forming a second barb of a product is formed in the other end of the second insert (21); a first limiting pin (47) and a second limiting pin (48) are fixed on the mounting plate (7), the axes of the first limiting pin (47) and the second limiting pin (48) are the same as the moving direction of the mounting plate (7), the first limiting pin (47) is inserted into the first limiting hole (42), the second limiting pin (48) is inserted into the second limiting hole (45), two side walls of the convex-shaped abdicating groove (17) are provided with mounting steps (49), a cover plate (50) is fixedly connected onto the mounting steps (49), the cover plate (50) and the bottom surface of the convex-shaped abdicating groove (17) form a movable space (51) for the first mounting block (39) and the second mounting block (40) to move relative to the second concave module (4), two groove walls of the first insert mounting groove (41) and two groove walls of the second insert mounting groove (44) are convex arc groove walls (57), correspondingly, two side walls of the end part of the first insert (20) and two side walls of the end part of the second insert (21) are both concave arc-shaped side walls (58).

2. The injection mold with multiple demolding mechanisms, as claimed in claim 1, wherein the lower mold plate (2) is provided with a first sliding groove (35), and the first sliding block portion (23) and the second sliding block portion (25) are located in the first sliding groove (35); the side of first slider portion (23) and second slider portion (25) all is equipped with spacing step (36), one side of first spout (35) is equipped with mount table (37), be fixed with on mount table (37) and be used for spacing first slider portion (23) and second slider portion (25) stopper (38).

3. An injection mold with multiple demolding mechanisms according to claim 1, wherein a first spring (52) is arranged between the first mounting block (39) and a side wall of the side, facing the center of the mold, of the convex avoidance groove (17); the first spring (52) is used for tightly abutting the first limiting pin (47) with the first limiting hole (42); and a second spring (53) is arranged between the second mounting block (40) and the side wall of the side, facing the center of the die, of the convex yielding groove (17), and the second spring (53) is used for abutting a second limiting pin (48) against a second limiting hole (45).

4. The injection mold with multiple demolding mechanisms according to claim 3, wherein a first limiting pin (47) and a second limiting pin (48) are fixed on the mounting plate (7), the mounting plate (7) is provided with a mounting hole (54), the upper mold plate (1) is provided with a yielding hole (55) at the position of the mounting hole (54), the first limiting pin (47) and the second limiting pin (48) penetrate through the mounting hole (54), and the yielding hole (55) is internally provided with a tightening spring (56) for tightening the first limiting pin (47) and the second limiting pin (48).

5. The injection mold with multiple demolding mechanisms, as claimed in claim 1, wherein the first concave module (3) and the second concave module (4) are slidably connected with the upper mold plate (1), the first concave module (3) and the second concave module (4) are wedge-shaped in side faces, the first concave module (3) and the second concave module (4) are provided with T-shaped grooves (59) in side faces, a T-shaped sliding block (60) is fixed to the upper mold plate (1) at the positions of the T-shaped grooves (59), and the T-shaped sliding block (60) is slidably connected with the T-shaped grooves (59).

6. The injection mold with multiple demolding mechanisms, as recited in claim 1, wherein the third insert (13) comprises a third insert part (61) slidably connected with the first punch body (11) and a third slide block part (62) slidably connected with the lower mold plate (2), and the third slide block part (62) and the third insert part (61) are connected into a whole; the first inclined sliding block core pulling mechanism comprises a third driving block (63) which is arranged at the bottom of the upper template (1) and used for driving a third sliding block part (62) to slide back and forth, a third inclined block (64) is arranged on the side face of the third driving block (63), a third inclined slot (65) is formed in the third sliding block part (62), the third inclined block (64) is connected with the third inclined slot (65) in a sliding mode, the sliding direction of the third sliding block part (62) is perpendicular to the moving direction of the first concave module (3) and the second concave module (4) during mold opening, and the moving direction of the third driving block (63) is perpendicular to the surface of the lower template (2);

the fourth insert (16) comprises a fourth insert part (66) in sliding connection with the second punch body (14) and a fourth slider part (67) in sliding connection with the lower template (2), and the fourth slider part (67) and the fourth insert part (66) are connected into a whole; the second inclined sliding block core pulling mechanism comprises a fourth driving block (68) arranged at the bottom of the upper template (1) and used for driving a fourth sliding block part (67) to slide back and forth, a fourth inclined block (69) is arranged on the side face of the fourth driving block (68), a fourth inclined slot (70) is formed in the fourth sliding block part (67), the fourth inclined block (69) is connected with the fourth inclined slot (70) in a sliding mode, the sliding direction of the fourth sliding block part (67) is perpendicular to the moving direction of the first concave module (3) and the second concave module (4) during die opening, and the moving direction of the fourth driving block (68) is perpendicular to the surface of the lower template (2).