CN212288494U

CN212288494U - High-precision die capable of preventing product deformation

Info

Publication number: CN212288494U
Application number: CN202020573011.XU
Authority: CN
Inventors: 施冠麟; 程刚
Original assignee: Shanghai Sisuo Mold Forming Co ltd
Current assignee: Shanghai Sisuo Mold Forming Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-01-05
Anticipated expiration: 2030-04-16

Abstract

The utility model relates to a high-precision mould for preventing product deformation, which comprises a fixed mould plate and a movable mould plate, wherein the fixed mould plate is provided with a fixed mould core, and the movable mould plate is provided with a movable mould core; the fixed die core is provided with a fixed die forming cavity, the movable die core is provided with a movable die forming core, and the movable die forming core is inserted in the fixed die forming cavity to form a forming cavity of a formed product; the movable mold forming core is provided with an anti-deformation assembly, the anti-deformation assembly comprises a plurality of corner forming inserts and a plurality of middle forming inserts, and the corner forming inserts and the middle forming inserts are detachably arranged on the movable mold forming core; and the fixed die core is provided with a cooling assembly. The utility model discloses have the effect that the product of avoiding injection moulding takes place deformation that can be better.

Description

High-precision die capable of preventing product deformation

Technical Field

The utility model belongs to the technical field of the injection mold and specifically relates to a prevent high accuracy mould of product deformation and specifically relates to a.

Background

At present, the chinese patent with publication number CN106514962A discloses an injection mold, which comprises a fixed mold component and a movable mold component; the movable mould component comprises a movable mould bottom plate, a movable mould core and an ejector plate; the fixed die assembly comprises a fixed die base plate, a fixed die plate and a fixed die core, a movable die core and a fixed die core are matched to form a die cavity for pouring injection molding pieces, a first thimble and a plurality of second thimbles are arranged on an ejector plate, a notch groove is formed in the first thimble, a first pouring gate is arranged on the fixed die core, a second pouring gate is arranged on the movable die core, the first pouring gate is matched with the second pouring gate, a thimble channel and a plurality of ejector rod through holes are formed in the movable die core, and the second pouring gate is communicated with the thimble channel.

The traditional injection mold usually adopts a cavity between a movable mold and a fixed mold core to mold a product, and the traditional mold can only mold products with regular shapes.

The injection molding part shown in fig. 1 comprises a base plate 23, a coaming 24 and reinforcing ribs 25, wherein the coaming 24 and the reinforcing ribs 25 are arranged on the outer side of the base plate 23, the reinforcing ribs 25 are in a grid shape, and one side of the base plate 23, which faces the reinforcing ribs 25, is provided with clamping columns 26 and a positioning frame 27; because strengthening rib 25, locating frame 27 and joint post 26 for the thickness of each part of injection molding is inhomogeneous, and the internal stress of different positions is also different, and the injection molding that adopts traditional injection mold injection moulding takes place the distortion easily.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a prevent high accuracy mould of product deformation, deformation takes place for the product of avoiding injection moulding that can be better.

The above object of the present invention is achieved by the following technical solutions: a high-precision die for preventing a product from deforming comprises a fixed die plate and a movable die plate, wherein a fixed die core is arranged on the fixed die plate, and a movable die core is arranged on the movable die plate;

the fixed die core is provided with a fixed die forming cavity, the movable die core is provided with a movable die forming core, and the movable die forming core is inserted in the fixed die forming cavity to form a forming cavity of a formed product;

the movable mold forming core is provided with an anti-deformation assembly, the anti-deformation assembly comprises a plurality of corner forming inserts and a plurality of middle forming inserts, and the corner forming inserts and the middle forming inserts are detachably arranged on the movable mold forming core;

and the fixed die core is provided with a cooling assembly.

By adopting the technical scheme, the movable mould forming core is inserted into the fixed mould forming cavity, so that a forming cavity is formed, and the forming cavity is used for forming the injection molding piece; the corner forming insert and the middle forming insert are respectively used for forming different parts of the injection molding part, so that the forming surfaces of the corner forming insert and the middle forming insert can be processed according to the thickness and the shrinkage degree of the different parts of the injection molding part, the corner forming insert and the middle forming insert can be well and pertinently designed according to the deformation of different positions of the injection molding part after being cooled, the deformation resistance effect can be well achieved, and the final product can be well prevented from deforming; the cooling assembly is used for cooling the fixed die core, so that the injection molding piece can be well cooled and formed, and further the deformation of the injection molding piece can be better avoided in the recooling process.

The present invention may be further configured in a preferred embodiment as: the movable mould forming core is provided with a frame body forming core, and a frame body forming cavity for forming the positioning frame is arranged between the frame body forming core and the movable mould forming core;

and one side of the frame body forming core, facing the inner side surface of the fixed die forming cavity, is used for forming the inner side surface of the coaming.

By adopting the technical scheme, the frame body forming core is independently arranged, and the forming surface of the frame body forming core can be more conveniently machined, so that the forming precision is better ensured, the frame body forming core can be designed according to the deformation and shrinkage conditions of the cooled frame body, and the deformation of an injection molding piece can be better avoided.

The present invention may be further configured in a preferred embodiment as: the movable mould forming mold core is inserted with a frame body thimble, the frame body thimble is inserted in the frame body forming mold cavity, and one side of the frame body thimble is attached to the frame body forming mold core.

By adopting the technical scheme, when the frame body ejector pin is used for ejecting a product after the injection molding piece is molded, the position of the frame body is pushed, so that the frame body can be better prevented from being tightly held on the frame body molding core, and the product is better prevented from deforming during demolding.

The present invention may be further configured in a preferred embodiment as: and a surrounding plate ejector pin is inserted into the movable mould forming core, and one side of the surrounding plate ejector pin is attached to the frame forming core.

By adopting the technical scheme, the surrounding plate thimble is used for pushing the surrounding plate part of the injection molding when the product is ejected, so that the injection molding can be ejected better, the condition that the drawing crack occurs in the demolding is avoided, and the deformation of the injection molding product can be better avoided.

The present invention may be further configured in a preferred embodiment as: and a plurality of main push pins for pushing the substrate are inserted into the movable mold forming core.

By adopting the technical scheme, the main thimbles can be in partial contact with the substrate when the injection molding part is ejected, so that the injection molding part can be ejected more stably, and the substrate is prevented from deforming during ejection.

The present invention may be further configured in a preferred embodiment as: the positioning device comprises a fixed die core, a movable die core and a positioning column, wherein the fixed die core is provided with a positioning hole, the movable die core is detachably connected with the positioning column, the positioning column is inserted into the positioning hole and is in a round table shape, and one end, away from the movable die core, of the positioning column is a guide arc.

Through adopting above-mentioned technical scheme, the reference column is arranged in inserting and establishing the locating hole to in the shaping chamber that the cover half benevolence and movable mould benevolence can be formed can be better shaping product has been guaranteed in the correspondence that cover half benevolence and movable mould benevolence can be accurate, the direction circular arc is arranged in the mould guides more accurate inserting of reference column when the compound die and establishes into the locating hole.

The present invention may be further configured in a preferred embodiment as: the cooling assembly comprises a cooling water channel arranged in the fixed die core, and a water inlet channel and a water outlet channel arranged in the fixed die plate, wherein the water inlet channel and the water outlet channel are respectively communicated with two ends of the cooling water channel.

Through adopting above-mentioned technical scheme, the inlet channel is used for the cooling water conveyer pipe intercommunication with the outside, goes out the water route and is used for the output tube intercommunication with the outside to make the circulation in cooling water route that the cooling water can be stable, so that more stable with the mould cooling, make the cooling shaping that the injection molding product can be more stable.

The present invention may be further configured in a preferred embodiment as: the four corners of the fixed template are provided with positioning grooves, and the four corners of the movable template are provided with positioning blocks inserted into the positioning grooves.

Through adopting above-mentioned technical scheme, the locating piece is used for cooperating with the constant head tank to what can be better corresponds fixed die plate and movable mould board, makes the mould cover half benevolence and movable mould benevolence can be more accurate formation die cavity after the compound die, so that more accurate shaping product.

To sum up, the utility model discloses a following at least one useful technological effect:

the corner forming insert and the middle forming insert are respectively used for forming the corner part and the middle part of the injection molding part and dividing the forming surface of the formed injection molding part into a plurality of areas so as to design the forming surface according to the thickness and the shrinkage condition of different positions of the injection molding part and further ensure that the shape of a final product meets the requirement;

let in the cooling water in to the cooling water route, can make the quick cooling of cover half benevolence to make the cooling that can be quick after the product shaping stereotype, avoid the product to be ejecting.

Drawings

FIG. 1 is a schematic view of the structure of an injection molded part product;

FIG. 2 is a schematic structural view of the whole of the present embodiment;

FIG. 3 is a schematic view showing a disassembled state of the movable mold part and the fixed mold part according to the present embodiment;

FIG. 4 is a schematic structural diagram of the cavity insert of the present embodiment;

FIG. 5 is a schematic structural view of a deformation-resistant component according to the present embodiment;

FIG. 6 is a front view of the cavity insert of the present embodiment;

FIG. 7 is an enlarged schematic view of portion A of FIG. 6;

FIG. 8 is an enlarged schematic view of portion B of FIG. 3;

fig. 9 is a schematic structural view of the cooling module of the present embodiment.

In the figure, 1, a fixed template; 2. moving the template; 3. fixing a mold core; 4. a movable mould core; 5. fixing a mould to form a cavity; 6. forming a core by a movable mould; 7. a deformation resistant component; 8. forming inserts at the corners; 9. forming an insert in the middle; 10. a cooling assembly; 11. a frame forming core; 12. a frame forming cavity; 13. a coaming thimble; 14. a main thimble; 15. positioning holes; 16. a positioning column; 17. guiding the arc; 18. a cooling water path; 19. a water inlet path; 20. a water outlet path; 21. positioning a groove; 22. positioning blocks; 23. a substrate; 24. enclosing plates; 25. reinforcing ribs; 26. a clamping column; 27. a positioning frame; 28. the frame body thimble.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2 and 3, for the utility model discloses a prevent high accuracy mould of product deformation, including fixed die plate 1, movable mould board 2, fixed mould benevolence 3 and movable mould benevolence 4, offer the mould benevolence holding tank that is used for holding fixed mould benevolence 3 on the fixed die plate 1, offer the mould benevolence holding tank that is used for holding movable mould benevolence 4 on the movable mould board 2, fixed mould benevolence 3 adopts the bolt locking on fixed die plate 1, and movable mould benevolence 4 adopts the bolt locking on movable mould board 2.

Referring to fig. 3, a fixed mold forming cavity 5 is arranged on a fixed mold core 3, a movable mold forming core 6 is arranged on a movable mold core 4, after mold closing, the movable mold forming core 6 is inserted into the fixed mold forming cavity 5, and a forming cavity for forming a product is formed between the movable mold forming core 6 and the fixed mold forming cavity 5; a glue inlet runner is arranged on the fixed die plate 1 and communicated with the fixed die forming cavity 5; after the die is closed, the hot-melt plastic flows into the molding cavity from the glue inlet runner, and is cooled and molded into a plastic piece in the molding cavity.

Referring to fig. 4 and 5, the movable mold core 6 is provided with a deformation-resistant assembly 7, and the deformation-resistant assembly 7 includes a plurality of corner mold inserts 8 and a plurality of middle mold inserts 9; the corner forming insert 8 is arranged at the corner of the movable mold forming core 6 and used for forming the corner of the substrate 23 and the coaming 24, and the corner forming insert 8 is connected with the movable mold plate 2 through a bolt; the intermediate molding insert 9 is provided at a middle position of the movable mold core 6 for molding a middle portion of the base plate 23, the intermediate molding insert 9 penetrates the movable mold core 6, and the intermediate molding insert 9 is connected to the movable platen 2 (refer to fig. 3) by bolts.

Referring to fig. 6 and 7, a frame body molding core 11 for molding the positioning frame 27 is detachably attached to the movable mold core 6, the frame body molding core 11 is disposed through the movable mold core 6, and a frame body molding cavity 12 for molding the positioning frame 27 (refer to fig. 1) is disposed between the frame body molding core 11 and the movable mold core 6; the side of the frame forming core 11 facing the inner side of the fixed mold forming cavity 5 is provided with a forming inner side for forming a coaming 24 (refer to fig. 1), and the surfaces of the frame forming cavity 12 for forming the positioning frame 27, the coaming 24 and the substrate 23 are polished to form a polishing layer.

Referring to fig. 6 and 7, a frame thimble 28 is inserted into the movable mold core 6 at the frame molding cavity 12, the frame thimble 28 is disposed to penetrate through the movable mold core 6, the cross section of the frame thimble 28 is rectangular, and a plurality of frame thimbles 28 are disposed at the frame molding cavity 12; a surrounding plate thimble 13 is inserted into the movable mould forming core 6, the surrounding plate thimble 13 is arranged in a forming cavity for forming a surrounding plate 24, the surrounding plate thimble 13 penetrates through the fixed mould forming core, the section of the surrounding plate thimble 13 is rectangular, and the side surface of the surrounding plate thimble 13 is attached to the side surface of the movable mould forming core 6; a plurality of main ejector pins 14 for ejecting the substrate 23 are inserted into the movable mold molding core 6, the cross section of each main ejector pin 14 is circular, each main ejector pin 14 is used for ejecting the substrate 23, and a plurality of main ejector pins 14 are uniformly arranged at positions for molding the substrate 23. After a product is molded in a mold, a movable mold and a fixed mold are separated, the movable mold plate 2 and the movable mold core 4 move towards the direction far away from the fixed mold plate 1, and then the frame body thimble 28, the coaming thimble 13 and the main thimble 14 move towards the direction of the fixed mold plate 1, so that the product is ejected out; because the frame body thimble 28 and the coaming thimble 13 respectively push the positioning frame 27 (refer to fig. 1) and the coaming 24 (refer to fig. 1), the product is stressed uniformly when pushed, and the product is prevented from deforming better; because the main ejector pins 14 are uniformly arranged, the stress is more uniform when the substrate 23 is pushed, and the deformation of the substrate 23 is better avoided when the product is ejected.

Referring to fig. 9, the fixed mold part is provided with a cooling assembly 10, the cooling assembly 10 comprises a cooling water path 18 arranged on the fixed mold core 3, a water inlet path 19 and a water outlet path 20 arranged in the fixed mold plate 1, two ends of the cooling water path 18 are respectively communicated with the water inlet path 19 and the water outlet path 20, the water inlet path 19 is communicated with an external cooling water pipe, the water outlet path 20 is communicated with a water discharge pipe, so that cooling water can stably circulate, cooling of the fixed mold plate 1 after molding of an injection molding product can be fast is guaranteed, so that the injection molding product can be fast molded, and the shape of the injection molding product is more stable after being pushed out.

Referring to fig. 3 and 8, a positioning hole 15 is formed in one side of the cavity block 3 facing the cavity block 4, a positioning column 16 is inserted into the cavity block 4, the positioning column 16 extends towards one side of the cavity block 3, and a guiding arc 17 is formed in one side of the positioning column 16 facing the cavity block 3; positioning grooves 21 are formed in the four corners of the fixed template, positioning blocks 22 corresponding to the positioning grooves 21 are arranged in the four corners of the movable template 2, and the positioning blocks 22 and the movable template 2 are integrally formed; when the mold is closed, the movable mold core 4 moves towards the fixed mold core 3, and the guide circular arc 17 can play a role in guiding, so that the positioning can be more accurately inserted into the positioning hole 15, meanwhile, the positioning block 22 is inserted into the positioning groove 21, so that the fixed mold core 3 and the movable mold core 4 are more accurately matched, and the product forming precision is better ensured.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A high-precision die capable of preventing product deformation comprises a fixed die plate (1) and a movable die plate (2), wherein a fixed die core (3) is arranged on the fixed die plate (1), and a movable die core (4) is arranged on the movable die plate (2);

the method is characterized in that: the fixed die core (3) is provided with a fixed die forming cavity (5), the movable die core (4) is provided with a movable die forming core (6), and the movable die forming core (6) is inserted into the fixed die forming cavity (5) to form a forming cavity of a formed product;

the movable mold forming die core (6) is provided with an anti-deformation assembly (7), the anti-deformation assembly (7) comprises a plurality of corner forming inserts (8) and a plurality of middle forming inserts (9), and the corner forming inserts (8) and the middle forming inserts (9) are detachably arranged on the movable mold forming die core (6);

the fixed die core (3) is provided with a cooling component (10).

2. A high precision mold for preventing deformation of a product according to claim 1, wherein: a frame body forming core (11) is arranged on the movable mould forming core (6), and a frame body forming cavity (12) for forming the positioning frame (27) is arranged between the frame body forming core (11) and the movable mould forming core (6);

and one side of the frame body molding core (11) facing the inner side of the fixed mold molding cavity (5) is used for molding the inner side of the coaming (24).

3. A high-precision mold for preventing deformation of a product according to claim 2, wherein: a frame thimble (28) is inserted into the movable mold forming core (6), the frame thimble (28) is inserted into the frame forming cavity (12), and one side of the frame thimble (28) is attached to the frame forming core (11).

4. A high precision mold for preventing deformation of a product according to claim 3, wherein: and a surrounding plate thimble (13) is inserted into the movable mould molding core (6), and one side of the surrounding plate thimble (13) is attached to the frame molding core (11).

5. A high-precision mold for preventing deformation of a product according to claim 2, wherein: and a plurality of main thimbles (14) used for pushing the substrate (23) are inserted into the movable mould forming core (6).

6. A high precision mold for preventing deformation of a product according to claim 1, wherein: the positioning die comprises a fixed die core (3) and a movable die core (4), wherein the fixed die core (3) is provided with a positioning hole (15), the movable die core (4) is detachably connected with a positioning column (16), the positioning column (16) is inserted into the positioning hole (15), the positioning column (16) is in a circular truncated cone shape, and one end, away from the movable die core (4), of the positioning column (16) is a guide circular arc (17).

7. A high precision mold for preventing deformation of a product according to claim 1, wherein: the cooling assembly (10) comprises a cooling water channel (18) arranged in the fixed die core (3), a water inlet channel (19) and a water outlet channel (20) arranged in the fixed die plate (1), and the water inlet channel (19) and the water outlet channel (20) are respectively communicated with two ends of the cooling water channel (18).

8. A high precision mold for preventing deformation of a product according to claim 1, wherein: positioning grooves (21) are formed in the four corners of the fixed template (1), and positioning blocks (22) inserted into the positioning grooves (21) are arranged in the four corners of the movable template (2).