CN218139353U

CN218139353U - Injection mold with edge material removing function

Info

Publication number: CN218139353U
Application number: CN202221420312.4U
Authority: CN
Inventors: 夏云军; 龚道武
Original assignee: Suzhou Donho Plastic Hardware Co ltd
Current assignee: Suzhou Donghao Precision Manufacturing Co.,Ltd.
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-12-27
Anticipated expiration: 2032-06-09

Abstract

The utility model relates to an injection mold technical field, in particular to get rid of injection mold of rim charge from area, include: an upper mold core and a lower mold core; a molding cavity formed by the upper mold core and the lower mold core; a top material cutting groove, an outer side material cutting groove and an inner side material cutting groove which are communicated with the forming cavity; the top material cutting knife is arranged on the top material cutting groove, is close to the top of the forming cavity and is positioned on one side of the outer surface of the formed workpiece; the outer side material cutting knife is arranged on the outer side material cutting groove, is close to the bottom of the forming cavity and is positioned on one side of the outer surface of the formed workpiece; and the inner side material cutting knife is arranged on the inner side material cutting groove, is close to the bottom of the forming cavity and is positioned on one side of the inner wall of the formed workpiece. Through set up top blank sword on one side at the shaping chamber, shaping work piece in the shaping chamber rises when the drawing of patterns, and the leftover bits of shaping work piece can contact top blank sword and be downcut by top blank sword when rising to make shaping work piece's surfacing, reduced the probability that the burr appears.

Description

Injection mold with edge material removing function

Technical Field

The utility model relates to an injection mold technical field, in particular to get rid of injection mold of rim charge from area.

Background

The encapsulation means that the encapsulation material is softened into soft glue and coated on other products to be encapsulated. The existing encapsulation usually adopts a secondary injection molding process, namely, a product to be encapsulated which is subjected to injection molding is fixed on an encapsulation molding workpiece, then molten soft glue is adhered to the product to be encapsulated by injection molding at a proper temperature, and a product is obtained by cooling. The liquid silica gel has the advantages of excellent transparency, tear strength, rebound resilience, yellowing resistance, thermal stability, water resistance, good air permeability, heat aging resistance, weather resistance and the like, and is gradually applied to the fields of infant products, medical products, electronic products and the like.

In prior art, the burr is cut off to the mode that the cutting of polishing was carried out to shaping work piece after will shaping work piece drawing of patterns usually to promote product quality.

However, in the practical application process, the formed workpiece is contacted with the outside air and cooled after being taken out, the connection strength of the leftover material and the formed workpiece is high, so that the worker is inconvenient to polish, the leftover material is inconvenient to remove, and the injection mold with the leftover material removed is needed.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides an injection mold of rim charge is got rid of from area sets up top blank sword on one side at the shaping chamber, and the shaping work piece in the shaping chamber rises when the drawing of patterns, and the rim charge of shaping work piece can contact top blank sword and is downcut by top blank sword when rising to make shaping work piece's surfacing.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an injection mold with offcut removal, comprising: an upper mold core and a lower mold core;

the upper die core and the lower die core are matched to form a forming cavity;

the top material cutting groove, the outer side material cutting groove and the inner side material cutting groove are communicated with the forming cavity;

the top material cutting knife is arranged on the top material cutting groove, is close to the top of the forming cavity and is positioned on one side of the outer surface of the formed workpiece;

the outer side material cutting knife is arranged on the outer side material cutting groove, is close to the bottom of the forming cavity and is positioned on one side of the outer surface of the formed workpiece;

and the inner side material cutting knife is arranged on the inner side material cutting groove, is close to the bottom of the forming cavity and is positioned on one side of the inner wall of the formed workpiece.

As a preferred scheme of the utility model, top blank sword, outside blank sword all are the annular with inboard blank sword, just the cutting edge of top blank sword, outside blank sword and inboard blank sword all contacts with the lateral wall that becomes the die cavity.

As a preferred scheme of the utility model, parallel arrangement between top blank sword, outside blank sword and the inboard blank sword, just be relative setting between outside blank sword and the inboard blank sword.

As a preferred scheme of the utility model, be equipped with the pipe connector with the opening looks adaptation of shaping work piece on the mould benevolence.

As a preferred scheme of the utility model, go up be equipped with on the mould benevolence with the shaping chamber is located same horizontal plane and is used for the fixed block in fixed shaping chamber, it is right to be equipped with on the mould benevolence the fixed block carries out spacing stopper.

As a preferred scheme of the utility model, offer the chamber that holds that is used for holding the leftover bits on the fixed block, hold the chamber and cut the silo with the top the outside is cut the silo and is all connected.

As an optimized scheme of the utility model, still including locating be used for ejecting on the lower mould benevolence the jacking subassembly of the shaping work piece in the shaping intracavity.

As an optimized scheme of the utility model, the jacking subassembly including set up in on the lower mould benevolence and one end stretch into the thimble at profile cavity center is located the jacking board of thimble bottom.

As an optimized proposal of the utility model, the top middle part of the jacking plate is provided with a spacing post.

As an optimized proposal of the utility model, the spring damper which is distributed in a matrix shape is arranged on the jacking plate.

To sum up, the utility model discloses following beneficial effect has:

1. the top cutting knife is arranged beside the forming cavity, so that a formed workpiece in the forming cavity rises during demolding, and leftover materials of the formed workpiece can contact with the top cutting knife and are cut off by the top cutting knife during rising, so that the surface of the formed workpiece is smooth, the probability of burrs is reduced, the forming success rate of the formed workpiece is effectively improved, and the burr removing efficiency is also effectively improved;

2. gaps are reserved between the top material cutting groove and the top material cutting knife, between the outer side material cutting groove and the outer side material cutting knife and between the inner side material cutting groove and the inner side material cutting knife, and after the top material cutting knife, the outer side material cutting knife and the inner side material cutting knife cut and form leftover materials of a workpiece, the cut leftover materials enter the corresponding material cutting grooves from the gaps, so that the cut leftover materials can be effectively prevented from entering a forming cavity to influence the next injection molding operation;

3. through setting up annular top blank sword, outside blank sword and inboard blank sword, can carry out comprehensive cutting to the outer loop of shaping work piece, it is more abundant to the cutting of shaping work piece, the leftover bits of shaping work piece are difficult to remain.

Drawings

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

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional structure view for showing the internal structure of the present invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Fig. 4 is a schematic view of the connection structure of the formed workpiece and the pipe connector in the embodiment of the present application.

Fig. 5 is a schematic structural diagram for showing the bottom of the formed workpiece in the embodiment of the present application.

The corresponding part names indicated by the numbers and letters in the drawings:

1. an upper die core; 11. a fixed block; 12. a limiting block; 13. an accommodating chamber; 14. a pipe connector; 2. A lower die core; 21. a molding cavity; 31. a thimble; 32. a jacking plate; 33. a limiting column; 34. a spring damper; 41. a top material cutting groove; 42. a top cutter; 43. a material cutting groove at the outer side; 44. an outer side cutter; 45. an inner side material cutting groove; 46. an inner side material cutting knife.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

The embodiment of the application discloses an injection mold with a removed rim charge.

As shown in fig. 1 and 2, an injection mold with a rim charge removed therefrom includes: an upper mold core 1 and a lower mold core 2; a molding cavity 21 arranged on the lower die core 2; and the jacking component is arranged on the lower die core 2 and is used for jacking the formed workpiece in the forming cavity 21.

As shown in fig. 2 and 3, the blank assembly 4 includes a top blank groove 41 formed on the lower mold core 2 and communicated with the molding cavity 21, and a top blank knife 42 located on the outer surface of the molded workpiece is welded to the top of the top blank groove 41. Through set up top blank sword 42 by one side at the die cavity 21, the shaping work piece in the die cavity 21 rises when the drawing of patterns, and the leftover bits of shaping work piece can contact top blank sword 42 and be downcut by top blank sword 42 for the surfacing of shaping work piece, and effectively improved the shaping success rate.

The lower die core 2 is provided with an outer side material cutting groove 43 connected with the outer side of the bottom end of the forming cavity 21 and an inner side material cutting groove 45 connected with the inner side of the bottom end of the forming cavity 21, the outer side material cutting groove 43 is welded with an outer side material cutting knife 44 connected with the outer surface of a formed workpiece, and the inner side material cutting groove 45 is welded with an inner side material cutting knife 46 connected with one side of the inner side of the formed workpiece. Through setting up outside blank sword 44, the bottom outside and the outside blank sword 44 butt of shaping work piece when the shaping work piece drawing of patterns rises cut off the leftover bits in the shaping work piece bottom outside for the cutting to shaping work piece leftover bits is more comprehensive. Through setting up inboard blank sword 46, when the shaping work piece drawing of patterns rose, shaping work piece's the inboard and inboard blank sword 46 butt in bottom cut off the inboard leftover bits in shaping work piece bottom for the cutting to shaping work piece leftover bits is more comprehensive.

The top cutter 42, the outer cutter 44 and the inner cutter 46 are all annular, and the cutting edges of the top cutter 42, the outer cutter 44 and the inner cutter 46 are all in contact with the side wall of the molding cavity 21. The edges and corners of the formed workpiece are respectively contacted with the cutting edges of the top cutting knife 42, the outer cutting knife 44 and the inner cutting knife 46 after the formed workpiece is formed, the annular top cutting knife 42, the annular outer cutting knife 44 and the annular inner cutting knife 46 can cut the whole outer ring of the formed workpiece, the formed workpiece is fully cut, and leftover materials of the formed workpiece are difficult to remain.

The top cutter 42, the outer cutter 44 and the inner cutter 46 are arranged in parallel, and the outer cutter 44 and the inner cutter 46 are arranged oppositely. The outer side material cutting blade 44 and the inner side material cutting blade 46 which are oppositely arranged can cut the two sides of the bottom of the formed workpiece, and the cutting of the leftover materials is more comprehensive.

As shown in fig. 2 and 4, the upper mold core 1 is provided with a pipe connector 14 adapted to the opening of the molded workpiece, and by providing the pipe connector 14, one end of the pipe connector 14 is inserted into the opening of the molded workpiece, so as to prevent the opening of the molded workpiece from bending.

As shown in fig. 2 and 3, the top cutter 42 is located at the top end of the top cutter groove 41, the outer cutter 44 is located at the top end of the outer cutter groove 43, the inner cutter 46 is located at the top end of the inner cutter groove 45, and gaps are left between the top cutter groove 41 and the top cutter 42, between the outer cutter groove 43 and the outer cutter 44, and between the inner cutter groove 45 and the inner cutter 46. After the top material cutting knife 42, the outer side material cutting knife 44 and the inner side material cutting knife 46 cut the leftover materials of the formed workpiece, the cut leftover materials enter the corresponding material cutting grooves from the gaps, the cut leftover materials can be contained, and the cut leftover materials are prevented from entering the forming cavity 21 to influence the next injection forming operation.

The upper die core 1 is provided with a fixed block 11 which is positioned on the same horizontal plane with the molding cavity 21 and used for abutting against the fixed molding cavity 21, and one side of the upper die core 1 is connected with a limiting block 12 for limiting the fixed block 11 through a bolt. Carry on spacingly to fixed block 11 through

stopper

12, 11 butt of fixed block become die cavity 21 for the location of die cavity 21 is accurate, and difficult appearance shifts, ensures die cavity 21's stability.

Offer the chamber 13 that holds that is used for holding the leftover bits on the fixed block 11, hold chamber 13 and top cutting groove 41, outside cutting groove 43 and all be connected. Can enter into behind leftover bits entering top blank groove 41, the outside blank groove 43 and hold chamber 13, hold chamber 13 and enlarged the volume that holds the leftover bits, can hold more leftover bits, prevent to block up top blank groove 41 and outside blank groove 43.

The jacking assembly comprises a thimble 31 which is arranged on the lower die core 2 in a sliding way, and one end of the thimble 31 extends into the center of the die cavity, and a jacking plate 32 which is arranged at the bottom end of the thimble 31. When the die is used, the ejector pin 31 is ejected through the ejector plate 32, the ejector pin 31 ejects the center of a formed workpiece, so that the formed workpiece rises in the forming cavity 21 to realize die release, and leftover material cutting is performed by the top material cutting knife 42, the outer side material cutting knife 44 and the inner side material cutting knife 46 in the die release process.

The welding of the top middle part of jacking board 32 has spacing post 33, and jacking board 32 rises behind a section distance with the shaping chamber 21 bottom butt of lower mould benevolence 2, the jacking stroke of restriction jacking board 32 to play the effect that increases the stability of jacking board 32 during operation.

Four spring dampers 34 distributed in a matrix form are welded on the jacking plate 32, the spring dampers 34 guide the movement of the jacking plate 32, and automatic resetting can be realized after jacking is completed.

The working principle is as follows: after the formed workpiece is formed, the formed workpiece in the forming cavity 21 rises during demolding through the top cutting knife 42, the outer cutting knife 44 and the inner cutting knife 46 which are arranged at the edge of the forming cavity 21 and are in contact with each other, leftover materials of the formed workpiece can contact the top cutting knife 42, the outer cutting knife 44 and the inner cutting knife 46 and are cut off, the surface of the formed workpiece is smooth, and after the leftover materials of the formed workpiece are cut by the top cutting knife 42, the outer cutting knife 44 and the inner cutting knife 46, the cut leftover materials enter the corresponding cutting grooves from gaps.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a get rid of injection mold of rim charge from area which characterized in that includes: an upper mold core (1) and a lower mold core (2);

a molding cavity (21) formed by the upper die core (1) and the lower die core (2) in a matched mode;

a top material cutting groove (41), an outer side material cutting groove (43) and an inner side material cutting groove (45) which are communicated with the forming cavity (21);

the top material cutting knife (42) is arranged on the top material cutting groove (41), is close to the top of the forming cavity (21) and is positioned on one side of the outer surface of the formed workpiece;

the outer side material cutting knife (44) is arranged on the outer side material cutting groove (43), is close to the bottom of the forming cavity (21) and is positioned on one side of the outer surface of the formed workpiece;

and the inner side material cutting knife (46) is arranged on the inner side material cutting groove (45), is close to the bottom of the forming cavity (21) and is positioned on one side of the inner wall of the formed workpiece.

2. The injection mold with the rim charge removing function according to claim 1, wherein the top cutter (42), the outer cutter (44) and the inner cutter (46) are annular, and the cutting edges of the top cutter (42), the outer cutter (44) and the inner cutter (46) are in contact with the side wall of the molding cavity (21).

3. The injection mold with the rim charge removing function according to claim 1, wherein the top cutter (42), the outer cutter (44) and the inner cutter (46) are arranged in parallel, and the outer cutter (44) and the inner cutter (46) are arranged oppositely.

4. The injection mold with the rim charge removed according to claim 1, wherein the upper mold core (1) is provided with a pipe connector (14) adapted to the opening of the molded workpiece.

5. The injection mold with the rim charge removed according to claim 1, wherein the upper mold core (1) is provided with a fixing block (11) which is located on the same horizontal plane with the molding cavity (21) and used for fixing the molding cavity, and the upper mold core (1) is provided with a limiting block (12) for limiting the fixing block (11).

6. The injection mold with the offcut removal function according to claim 5, wherein the fixing block (11) is provided with a containing cavity (13) for containing the offcut, and the containing cavity (13) is connected with the top material cutting groove (41) and the outer material cutting groove (43).

7. The injection mold with the rim charge removed according to claim 1, further comprising a jacking assembly disposed on the lower mold core (2) for jacking out the molded workpiece in the molding cavity (21).

8. The injection mold with the offcut removal function according to claim 7, wherein the jacking assembly comprises a thimble (31) disposed on the lower mold core (2) and having one end extending into the center of the molding cavity (21), and a jacking plate (32) disposed at a bottom end of the thimble (31).

9. The injection mold with the offcut removal function as claimed in claim 8, wherein a limiting column (33) is arranged in the middle of the top end of the jacking plate (32).

10. The injection mold with trim removal of claim 8, wherein the lifting plate (32) is provided with spring dampers (34) distributed in a matrix.