CN217621955U

CN217621955U - Injection mold with built-in forming block

Info

Publication number: CN217621955U
Application number: CN202220660536.6U
Authority: CN
Inventors: 李园林
Original assignee: Suzhou Jili Stainless Steel Products Co ltd
Current assignee: Suzhou Jili Stainless Steel Products Co ltd
Priority date: 2021-12-28
Filing date: 2022-03-23
Publication date: 2022-10-21
Anticipated expiration: 2032-03-23

Abstract

The utility model relates to a built-in injection mold of shaping piece, it includes: the device comprises a bottom plate, a lower template fixed at the top of the bottom plate, an upper template arranged at the top of the lower template, a top plate fixed at the top of the upper template, a cavity arranged in the lower template, an inner feeding column penetrating through the upper template and connected with the cavity, an outer feeding column penetrating through the top plate and connected with the inner feeding column, a forming block movably arranged in the cavity and an ejector rod penetrating through the cavity in a lifting manner; the forming block is arranged in the lower template and can move inwards under the driving of the slide block, so that the inner side groove of the annular plate can be conveniently formed, the die sinking is also convenient, the inner forming block is not required to be manually disassembled, and the cost is saved; and simple structure has reduced the manufacturing cost of mould, uses the back for a long time, under the cooperation of wedge and cotter board, still can guarantee that the position of shaping piece does not change, has guaranteed the finished product's of moulding plastics quality.

Description

Injection mold with built-in forming block

Technical Field

The utility model belongs to the technical field of the mould class, concretely relates to built-in injection mold of shaping piece.

Background

The mold is used for obtaining various molds and tools of required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production; in short, a mold is a tool used to make a molded article, which accomplishes the processing of the shape of the article mainly by the change of the physical state of the molded material.

Most of the existing molds are of an up-and-down opening type, and when the inner side of a required product is provided with a groove, the existing molds cannot meet the injection molding requirement, so that an internal forming block needs to be additionally arranged in the mold to form the groove; and after the die sinking, still need the manual work to take off inside shaping piece, then the reloading resets and carries out the shaping next time, and long-time dismouting leads to the position of inside shaping piece to take place slight skew, can't satisfy finished product quality requirement, still needs artificial input, extravagant cost when moulding plastics moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a built-in injection mold of shaping piece in order to overcome prior art not enough.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a molding block built-in injection mold comprises:

the device comprises a bottom plate, a lower template fixed to the top of the bottom plate, an upper template arranged on the top of the lower template, a top plate fixed to the top of the upper template, a cavity arranged in the lower template, an inner feeding column penetrating through the upper template and connected with the cavity, an outer feeding column penetrating through the top plate and connected with the inner feeding column, a forming block movably arranged in the cavity and an ejector rod arranged in the cavity in a penetrating mode in a liftable mode.

Optimally, the device also comprises a lifting plate fixed at the bottom of the ejector rod, a baffle integrally arranged in the lower template and a forming groove arranged on the baffle and connected with the cavity, the cavity is surrounded by the lower template and the baffle, and the forming block is movably arranged in the forming groove.

Optimally, the forming die further comprises a cross-shaped sliding groove formed in the top of the upper die plate and a sliding block movably arranged in the sliding groove, and the forming block is fixed to the inner side of the sliding block.

Optimally, the device also comprises a wedge-shaped block and a guide hole which are fixed on one opposite side of a group of oppositely arranged sliding blocks, a guide post which is arranged in the wedge-shaped block in a penetrating way and is matched with the guide hole for use, wedge-shaped grooves which are arranged on two sides of the wedge-shaped block and a pin plate which is fixed on one opposite side of the other oppositely arranged sliding block group, wherein the pin plate is inserted in the wedge-shaped groove.

Preferably, the outer feeding column comprises a feeding part, a contraction part and a fixing part, wherein the contraction part is arranged at the bottom of the feeding part in an integrated forming mode, the fixing part is arranged at the bottom of the contraction part in an integrated forming mode, and the outer flow channel penetrates through the feeding part, the contraction part and the fixing part.

Preferably, the number of outer feed columns is equal to the number of inner feed columns.

Because of the application of above-mentioned technical scheme, compared with the prior art, the utility model has the following advantage:

the injection mold with the built-in molding block of the utility model has the advantages that the molding block is arranged in the lower template and can move inwards under the driving of the slide block, so that the inner side groove of the annular plate can be conveniently molded, the mold opening is also convenient, the inner molding block does not need to be manually disassembled and assembled, and the cost is saved; and simple structure has reduced the manufacturing cost of mould, uses the back for a long time, under the cooperation of wedge and cotter board, still can guarantee that the position of shaping piece does not change, has guaranteed the finished product's of moulding plastics quality.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

fig. 4 is a cross-sectional view of the present invention shown in fig. 3;

FIG. 5 is a schematic view of a partial structure of the present invention;

fig. 6 is a schematic structural view of the lower template of the present invention;

FIG. 7 is a schematic structural view of the outer feed column of the present invention;

fig. 8 is a schematic structural view of the wedge-shaped block of the present invention;

fig. 9 is a top view of the wedge of the present invention;

FIG. 10 is a schematic structural view of an injection molded product according to the present invention;

description of reference numerals:

1. a base plate; 2. a lower template; 3. mounting a template; 4. a top plate; 5. a lifting plate; 6. a top rod; 7. an outer feed column; 71. a feeding section; 72. a constriction; 73. a fixed part; 74. an outer flow passage; 8. an inner feed column; 81. an inner flow passage; 9. a chute; 10. a slide rail; 11. a slider; 12. forming a block; 13. a wedge block; 14. a guide post; 15. a guide hole; 16. a wedge-shaped groove; 17. a pin plate; 18. a baffle plate; 19. a cavity; 20. forming a groove;

100. an annular plate; 101. and (4) a groove.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 1 and 2, the injection mold with built-in molding blocks according to the present invention is generally used for injection molding a product (which is a ring plate 100, and the inner side of the ring plate 100 is provided with a plurality of grooves 101) as shown in fig. 10. The device comprises a bottom plate 1, a lower template 2, an upper template 3, a top plate 4, a lifting plate 5, a mandril 6, an outer feeding column 7, an inner feeding column 8, a sliding groove 9, a sliding rail 10, a sliding block 11, a forming block 12, a wedge-shaped block 13, a guide post 14, a guide hole 15, a wedge-shaped groove 16, a pin plate 17, a baffle plate 18, a cavity 19 and a forming groove 20.

Wherein, bottom plate 1 is fixed on the board of moulding plastics usually (realize fixedly through the mode of screw fastening, convenient subsequent dismantlement). The lower template 2 is fixed on the top of the bottom plate 1 (the lower template 2 is fixed by screw fastening). As shown in fig. 6, which is a schematic structural diagram of the lower mold plate 2, the baffle 18 is integrally disposed in the lower mold plate 2, and the cavity 19 is disposed in the lower mold plate 2 for molding a product (the baffle 18 is an annular plate, and the cavity 19 is enclosed by the baffle 18 and the lower mold plate 2). A molding groove 20 is circumferentially opened in the baffle plate 18 and connected to the cavity 19 (the molding groove 20 is used for molding the groove 101 of the annular plate 100). The ejector rod 6 has a plurality of, and they run through the bottom plate 1 liftably and place in the die cavity 19, and the bottom of ejector rod 6 is fixed with lifter plate 5 for drive the lift of ejector rod 6 (after the product injection moulding, ejecting annular plate 100 by ejector rod 6, the bottom of lifter plate 5 is connected with the lift cylinder, is used for driving the lift of lifter plate 5, and the lift cylinder is not shown in the figure).

The cope match-plate pattern 3 sets up at the top of lower bolster 2 (cope match-plate pattern 3 and the cooperation of lower bolster 2 are with the shaping product, and cope match-plate pattern 3 can go up and down at the top of lower bolster 2, and the product is moulded plastics and is accomplished the back, and cope match-plate pattern 3 rises and keeps away from lower bolster 2, makes things convenient for annular plate 100 ejecting). The inner feed column 8 penetrates the upper mold plate 3 and is connected to the cavity 19 (the inner flow channel 81 penetrates the inner feed column 8, and the external molten plastic flows into the cavity 19 through the inner flow channel 81 for molding). The top plate 4 is fixed on the top of the upper die plate 3, and the outer feeding columns 7 penetrate through the top plate 4 and are connected with the inner feeding columns 8 (the number of the outer feeding columns 7 is equal to that of the inner feeding columns 8). As shown in fig. 7, the structure of the external feeding column 7 is schematically illustrated, and the external feeding column includes a feeding portion 71, a shrinking portion 72 integrally formed at the bottom of the feeding portion 71, a fixing portion 73 integrally formed at the bottom of the shrinking portion 72, and an external flow channel 74 penetrating through the feeding portion 71, the shrinking portion 72, and the fixing portion 73 (the external flow channel 74 is connected to an internal flow channel 81, external molten plastic material is injected into the external flow channel 74, and finally flows into the cavity 19 through the internal flow channel 81 for forming, and the arrangement of the shrinking portion 72 can slow down the flow speed of the molten material, thereby ensuring the saturation of the material filling in the cavity 19).

The sliding groove 9 is arranged at the top of the upper template 3 (the sliding groove 9 is in a cross shape). The sliding rails 10 are fixed on both sides of the sliding groove 9 (the sliding rails 10 are fixed by means of screw fastening). As shown in fig. 4, there are four sliding blocks 11, which are movably disposed in the sliding rail 10 (the sliding blocks 11 are moved by an external moving mechanism, which is an oil cylinder, and the sliding blocks 11 are driven by the oil cylinder to move). The three forming blocks 12 are fixed on the inner side of the sliding block 11 and move synchronously with the movement of the sliding block 11 (the number of the forming blocks 12 is the same as that of the forming grooves 20, the forming blocks 12 fixed on the sliding block 11 are positioned in the forming grooves 20, during injection, the sliding block 11 retreats to drive the forming blocks 12 to be inserted into the forming grooves 20 for forming the grooves 101 of the annular plate 100, after the injection is finished, the sliding block 11 moves inwards to drive the forming blocks 12 to gather inwards, and the forming blocks 12 are separated from the forming grooves 20, so that the ejection of a product is facilitated).

As shown in fig. 4, the four sliding blocks 11 are divided into two sets of sliding blocks which are oppositely arranged, wherein the inner sides of one set of sliding blocks 11 which are oppositely arranged are respectively provided with a wedge-shaped block 13 and a guide hole 15, and the guide post 14 penetrates through the wedge-shaped block 13 (the diameter of the guide post 14 is not larger than that of the guide hole 15, and when the sliding blocks 11 move inwards, the wedge-shaped block 13 is driven to synchronously move inwards until the guide post 14 is inserted into the guide hole 15). As shown in fig. 8, which is a schematic structural view of the wedge block 13, the wedge groove 16 is opened at both sides of the wedge block 13. The other set of oppositely arranged sliding blocks 11 are fixed with pin plates 17 on the inner sides, the pin plates 17 are inserted in the wedge-shaped grooves 16 (during actual injection, the other three sliding blocks 11 retreat to drive the forming blocks 12 to be inserted into the forming grooves 20, then the sliding blocks 11 fixed with the wedge-shaped blocks 13 move inwards until the guide posts 14 penetrate into the guide holes 15, the pin plates 17 are inserted in the wedge-shaped grooves 16 at the moment, after the molten material fills the cavity, the forming blocks 12 are prevented from being ejected out of the forming grooves 20 in the pressure maintaining stage, the injection quality of the finished product is improved, after the injection is finished, the sliding blocks 11 fixed with the wedge-shaped blocks 13 retreat until the guide posts 14 are separated from the guide holes 15, the other three sliding blocks 11 retreat inwards to drive the forming blocks 12 to gather together, the forming blocks 12 are separated from the forming grooves 20, and finally the ejector rods 6 eject the product).

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a built-in injection mold of shaping piece which characterized in that, it includes:

the bottom plate (1), fix lower bolster (2) at bottom plate (1) top, set up cope match-plate pattern (3) at lower bolster (2) top, fix roof (4) at cope match-plate pattern (3) top, set up die cavity (19) in lower bolster (2), run through cope match-plate pattern (3) and with interior feeding column (8) that die cavity (19) link to each other, run through roof (4) and with outer feeding column (7) that interior feeding column (8) link to each other, movably setting are in shaping piece (12) and liftable ground in die cavity (19) wear to establish ejector pin (6) in die cavity (19).

2. The injection mold with built-in molding block as claimed in claim 1, wherein: the device is characterized by further comprising a lifting plate (5) fixed at the bottom of the ejector rod (6), a baffle plate (18) integrally arranged in the lower template (2) and a forming groove (20) formed in the baffle plate (18) and connected with the cavity (19), the cavity (19) is defined by the lower template (2) and the baffle plate (18), and the forming block (12) is movably arranged in the forming groove (20).

3. The injection mold with built-in molding blocks as claimed in claim 1, wherein: the die also comprises a cross-shaped sliding groove (9) formed in the top of the upper die plate (3) and a sliding block (11) movably arranged in the sliding groove (9), and the forming block (12) is fixed on the inner side of the sliding block (11).

4. The injection mold with built-in molding block as claimed in claim 3, wherein: it is still including fixing wedge (13) and guide hole (15) of a set of slider (11) that sets up relatively one side in opposite directions, wear to establish in wedge (13) and with guide pillar (14) that guide hole (15) cooperate and use, set up wedge groove (16) of wedge (13) both sides and fix in another set of slider (11) that sets up relatively one side in opposite directions round pin board (17), round pin board (17) are pegged graft in wedge groove (16).

5. The injection mold with built-in molding block as claimed in claim 1, wherein: the outer feeding column (7) comprises a feeding portion (71), a contraction portion (72) integrally formed at the bottom of the feeding portion (71), a fixing portion (73) integrally formed at the bottom of the contraction portion (72), and an outer flow passage (74) penetrating through the feeding portion (71), the contraction portion (72) and the fixing portion (73).

6. The injection mold with built-in molding block as claimed in claim 1, wherein: the number of the outer feed columns (7) is equal to the number of the inner feed columns (8).