CN214982825U

CN214982825U - Injection mold with good formability

Info

Publication number: CN214982825U
Application number: CN202121140331.7U
Authority: CN
Inventors: 蒋嵩
Original assignee: Wuxi Aoyu Precision Machinery Co ltd
Current assignee: Wuxi Aoyu Precision Machinery Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-12-03
Anticipated expiration: 2031-05-26

Abstract

The utility model relates to an injection mold that formability is good, it includes: the cooling device comprises a bottom plate, a vertical plate fixed at the top of the bottom plate, a lower template fixed at the top of the vertical plate, a first cooling water channel arranged in the lower template, a cavity and a Y-shaped flow channel arranged at the top of the lower template, a cold material well arranged at the end part of the Y-shaped flow channel, an auxiliary flow channel communicated with the Y-shaped flow channel and the cavity, an upper template arranged on the lower template, a second cooling water channel arranged in the upper template, a core arranged at the bottom of the upper template and matched with the cavity for use, and a top plate fixed at the top of the upper template; the utility model discloses the straight runner is replaced with Y shape runner to the injection mold that the formability is good, and the melting plastic material that is injected into by the runner cover divides into three tributaries in Y shape runner punishment and flows into the die cavity, when reducing the shaping time, has eliminated the local internal stress problem that the melting material produced, ensures that the melting material can not solidify in advance, has guaranteed the shaping of final product.

Description

Injection mold with good formability

Technical Field

The utility model belongs to injection mold technology field, concretely relates to injection mold that formability is good.

Background

Injection molding is a method for producing moldings from industrial products, which are usually produced by injection molding of rubber or plastic. The injection molding product is generally used in the industries of mobile phones, portable computers, communication, electric appliances, electronics, toys and the like. The injection molding is realized through an injection molding machine and an injection mold together, molten rubber is injected into a straight flow channel in the mold through the injection molding machine, then flows into a cavity for molding, and is taken out after being cooled.

In the prior art, a main runner in a lower template is a direct-flow runner, molten plastic materials are injected into a sprue bush by an injection molding machine and then flow into the direct-flow runner, and are distributed into a cavity from two sides of the direct-flow runner for molding, and the molten plastic materials can be subjected to large internal stress due to viscosity of the molten plastic materials when flowing at the bottom of the direct-flow runner, so that the flowing speed is reduced, and the injection molding time is prolonged; and the slowly flowing molten plastic can be solidified in advance before entering the cavity, which affects the molding of the final product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection mold that formability is good for overcoming prior art's not enough.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an injection mold having good moldability, comprising:

the cooling device comprises a bottom plate, a vertical plate fixed on the top of the bottom plate, a lower template fixed on the top of the vertical plate, a first cooling water channel arranged in the lower template, a cavity and a Y-shaped flow channel arranged on the top of the lower template, a cold burden well arranged at the end part of the Y-shaped flow channel, an auxiliary flow channel communicated with the Y-shaped flow channel and the cavity, an upper template arranged on the lower template, a second cooling water channel arranged in the upper template, a core arranged at the bottom of the upper template and matched with the cavity for use, a top plate fixed on the top of the upper template, a sprue bush fixed on the top of the upper template and extending to the Y-shaped flow channel, a first thimble penetrating through the lower template and extending to the bottom of the Y-shaped flow channel, and a second thimble penetrating through the lower template and extending to the cavity;

and an outer runner connected with the Y-shaped runner is arranged in the sprue bush.

Optimally, it still includes the setting and is in the supporting pad at bottom plate top, fix the first backup pad at supporting pad top, fix second backup pad on the first backup pad, fix on the second backup pad and support and establish the jacking post of cope match-plate pattern lower surface, fix on the bottom plate and extend to the dead lever in the die cavity and setting are in the movable assembly at lower bolster top.

Preferably, the movable assembly comprises a sliding block slidably arranged on the lower template, pressing strips fixed on the lower template and pressed on two sides of the sliding block, wear-resistant strips fixed on the inner side of the sliding block, and an inclined guide post fixed on the top of the upper template and penetrating through the sliding block.

Optimally, the section of the outer flow channel is isosceles trapezoid, and the upper bottom of the isosceles trapezoid is smaller than the lower bottom.

Preferably, the first ejector pin is fixed on the second supporting plate, and the second ejector pin is fixed on the second supporting plate and sleeved on the fixing rod.

Optimally, when the upper die plate is jacked up by the jacking column, the inclined guide column pulls the sliding block to do linear motion on the lower die plate.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses the straight runner is replaced with Y shape runner to the injection mold that the formability is good, and the melting plastic material that is injected into by the runner cover divides into three tributaries in Y shape runner punishment and flows into the die cavity, when reducing the shaping time, has eliminated the local internal stress problem that the melting material produced, ensures that the melting material can not solidify in advance, has guaranteed the shaping of final product.

Drawings

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

FIG. 2 is a schematic view of a partial structure of the present invention;

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

FIG. 4 is a diagram showing a positional relationship between the first thimble and the second thimble according to the present invention;

fig. 5 is a schematic structural view of the upper template of the present invention;

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

fig. 7 is a top view of the lower template of the present invention;

fig. 8 is a schematic structural view of the movable assembly of the present invention;

fig. 9 is a cross-sectional view of a sprue bush of the present invention;

description of the figures:

1. a base plate; 2. a vertical plate; 3. a lower template; 301. a first cooling water path; 302. a cavity; 303. a Y-shaped flow passage; 304. an auxiliary flow channel; 305. a cold charge well; 4. mounting a template; 401. a second cooling water path; 402. a core; 5. a top plate; 6. a fixing ring; 7. a sprue bush; 701. an outer flow passage; 8. a guide post; 9. a guide sleeve; 10. jacking the column; 11. a support pad; 12. a first support plate; 13. a second support plate; 14. a support pillar; 15. a first thimble; 16. a second thimble; 17. fixing the rod; 18. a movable component; 181. a slider; 182. layering; 183. an inclined guide post; 184. wear resistant strips.

Detailed Description

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

As shown in fig. 1, for the utility model discloses a structural schematic diagram, it is used with the injection molding machine cooperatees usually for injection molding rubber, product, it mainly includes bottom plate 1, riser 2, lower bolster 3, cope match-plate pattern 4, roof 5, solid fixed ring 6, sprue bush 7, guide post 8, uide bushing 9, jacking post 10, supporting pad 11, first backup pad 12, second backup pad 13, support post 14, first thimble 15, second thimble 16, dead lever 17 and movable assembly 18 etc..

The bottom plate 1 is usually fixed on a machine table of an injection molding machine (the bottom plate 1 is a rectangular metal plate, and can be fixed in a screw fastening mode). The vertical plate 2 is provided with two blocks which are fixed on the upper surface of the bottom plate 1 in a screw fastening mode. The lower template 3 is fixed on the tops of the two vertical plates 2 (a long screw penetrates through the bottom plate 1 and the vertical plates 2, so that the lower template 3 is screwed at the bottom of the lower template 3 to fix the lower template 3), as shown in fig. 6, a structural schematic diagram of the lower template 3 is shown, and first cooling water paths 301 are arranged in the lower template 3 at intervals (the first cooling water paths 301 have two functions, namely, on one hand, the initial temperature of the lower template 3 is increased, so that molten plastic is prevented from flowing into the lower template 3 and being cooled in advance due to temperature difference, and on the other hand, after injection molding is completed, the lower template can play a role in cooling, so that the injection molding efficiency is improved). A cavity 302 and a Y-shaped runner 303 are provided on the top of the lower mold plate 3 (external molten plastic material flows into the Y-shaped runner 303, and the cavity 302 is used for molding a product). A cold well 305 is connected to the end of the Y-shaped flow channel 303 (the cold well 305 is used to store cold slugs generated during the injection interval). The auxiliary runner 304 has three pieces, which are used to connect the Y-shaped runner 303 and the cavity 302 (the external molten plastic material flows into the Y-shaped runner 303 and flows into the cavity 302 through the auxiliary runner 304 for molding).

The upper mold plate 4 is disposed on the lower mold plate 3, as shown in fig. 5, and is a schematic structural view of the upper mold plate 4. A second cooling water path 401 is disposed at an interval in the upper mold plate 4 (the second cooling water path 401 and the first cooling water path 301 have similar functions, and are not described herein again). The bottom of the upper plate 4 is provided with a core 402 for cooperating with the cavity 302. The top plate 5 is fixed on the top of the upper template 4 by screw fastening. One end of the sprue bush 7 is fixed on the upper surface of the upper template 4, and the other end of the sprue bush passes through the upper template 4 and extends to the Y-shaped runner 303 (as shown in fig. 7, the section of the sprue bush 7 is a cross section of the sprue bush 7, an outer runner 701 communicated with the Y-shaped runner 303 is arranged in the sprue bush 7, when in actual use, external molten plastic flows into the Y-shaped runner 303 through the outer runner 701 and then flows into the cavity 302 through the auxiliary runner 304 for forming, in the embodiment, the section of the outer runner 701 is isosceles trapezoid, and the upper bottom of the isosceles trapezoid is smaller than the lower bottom). The fixing ring 6 is fixed on the upper surface of the top plate 5 by screw fastening. In this embodiment, the Y-shaped runner 303 replaces a straight runner, and the molten plastic material injected from the sprue bush 7 is divided into three branches at the Y-shaped runner 303 and flows into the cavity 302, so that the local internal stress generated by the molten material is eliminated while the molding time is reduced, the molten material is ensured not to be solidified in advance, and the molding of the final product is ensured (the existing straight runner has two flow directions, and the molten material is easily gathered at the branch positions to generate the internal stress).

Four guide posts 8 are fixed on the lower template 3, four guide sleeves 9 are embedded on the upper template 4 and are matched with the guide posts 8 for use (the number of the guide posts 8 is the same as that of the guide sleeves 9). Supporting pad 11 sets up on bottom plate 1, and first backup pad 12 is fixed on supporting pad 11, and second backup pad 13 passes through the mode of screw fastening to be fixed on first backup pad 12. Four jacking columns 10 are provided, one end of each jacking column is fixed on the second supporting plate 13, and the other end of each jacking column penetrates through the lower template 3 and abuts against the lower surface of the upper template 4. Four support columns 14 are fixed on the bottom plate 1 and penetrate through the first support plate 12 and the second support plate 13 to abut against the bottom of the lower template 3. One end of the first thimble 15 is fixed on the second supporting plate 13, and the other end thereof penetrates through the lower template 3 and extends to the bottom of the Y-shaped runner 303. The fixing rod 17 has one end fixed to the base plate 1 and the other end extending into the cavity 302 through the first support plate 12 and the second support plate 13. One end of the second thimble 16 is fixed on the second supporting plate 13, and the other end thereof penetrates through the lower template 3 and extends into the cavity 302 (in this embodiment, the second thimble 16 is sleeved on the fixing rod 17).

The movable assembly 18 is arranged on the top of the lower template 3, as shown in fig. 8, and is a structural schematic diagram of the movable assembly 18. The device mainly comprises a sliding block 181, a pressing strip 182, an inclined guide post 183, a wear-resistant strip 184 and the like. The sliding block 181 is slidably disposed on the lower mold plate 3, and two pressing strips 182 are fixed on the lower mold plate 3 and press-fit on two sides of the sliding block 181. The wear-resistant strip 184 is fixed inside the sliding block 181, and the inclined guide post 183 is fixed on the top of the upper die plate 4 and penetrates through the sliding block 181 (in this embodiment, due to the inclined design of the inclined guide post 183, when the upper die plate 4 is jacked up by the jacking post 10, the inclined guide post 183 pulls the sliding block 181 to make a linear motion on the lower die plate 3).

The injection molding principle is as follows: injecting molten plastic into the sprue bush 7 by the injection molding machine, enabling the external molten plastic to flow into the Y-shaped runner 303 and flow into the cavity 302 through the auxiliary runner 304, and maintaining the pressure for a certain time to cool and mold;

the ejection principle is as follows: an external lifting cylinder drives the first supporting plate 12 and the second supporting plate 13 to lift (a cylinder body of the lifting cylinder is fixed on the lower surface of the bottom plate 1, and a telescopic rod penetrates through the bottom plate 1 to be connected with the first supporting plate 12), the upper template 4 is jacked up by the jacking column 10, the inclined guide post 183 pulls the sliding block 181 to move outwards on the lower template 3, meanwhile, the first ejector pin 15 and the second ejector pin 16 eject products, and after the products are taken out, the second supporting plate 13 resets.

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. An injection mold with good formability, characterized in that it comprises:

the cooling device comprises a bottom plate (1), a vertical plate (2) fixed to the top of the bottom plate (1), a lower template (3) fixed to the top of the vertical plate (2), a first cooling water channel (301) formed in the lower template (3), a cavity (302) and a Y-shaped flow channel (303) formed in the top of the lower template (3), a cold burden well (305) formed in the end of the Y-shaped flow channel (303), an auxiliary flow channel (304) communicated with the Y-shaped flow channel (303) and the cavity (302), an upper template (4) arranged on the lower template (3), a second cooling water channel (401) formed in the upper template (4), a core (402) arranged at the bottom of the upper template (4) and used in cooperation with the cavity (302), a top plate (5) fixed to the top of the upper template (4), a sprue bush (7) fixed to the top of the upper template (4) and extending to the Y-shaped flow channel (303), and a sprue bush (7), A first ejector pin (15) penetrating through the lower template (3) and extending to the bottom of the Y-shaped runner (303), and a second ejector pin (16) penetrating through the lower template (3) and extending into the cavity (302);

an outer runner (701) connected with the Y-shaped runner (303) is arranged in the sprue bush (7).

2. An injection mold with good moldability according to claim 1, wherein: it is still including setting up supporting pad (11) at bottom plate (1) top, fixing first backup pad (12) at supporting pad (11) top, fixing second backup pad (13) on first backup pad (12), fixing just support on second backup pad (13) and establish jacking post (10) of cope match-plate pattern (4) lower surface, fixing just extend to on bottom plate (1) dead lever (17) in die cavity (302) and setting are in movable assembly (18) at lower bolster (3) top.

3. An injection mold with good moldability according to claim 2, wherein: the movable assembly (18) comprises a sliding block (181) which is slidably arranged on the lower template (3), a pressing strip (182) which is fixed on the lower template (3) and is pressed on two sides of the sliding block (181), a wear-resistant strip (184) which is fixed on the inner side of the sliding block (181), and an inclined guide post (183) which is fixed on the top of the upper template (4) and penetrates through the sliding block (181).

4. An injection mold with good moldability according to claim 1, wherein: the section of the outer flow channel (701) is isosceles trapezoid, and the upper bottom of the isosceles trapezoid is smaller than the lower bottom.

5. An injection mold with good moldability according to claim 2, wherein: the first ejector pin (15) is fixed on the second supporting plate (13), and the second ejector pin (16) is fixed on the second supporting plate (13) and sleeved on the fixing rod (17).

6. An injection mold with good moldability according to claim 3, wherein: when the upper template (4) is jacked up by the jacking column (10), the inclined guide column (183) pulls the sliding block (181) to do linear motion on the lower template (3).