CN213291179U

CN213291179U - Injection mold of nonmetal thin slice of big middle of both ends

Info

Publication number: CN213291179U
Application number: CN202022207327.XU
Authority: CN
Inventors: 林玉萍
Original assignee: Guizhou Huafeng Electrical Appliances Co ltd
Current assignee: Guizhou Huafeng Electrical Appliances Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-05-28
Anticipated expiration: 2030-09-30

Abstract

The utility model provides an injection mold of little non-metallic thin slice in big centre in both ends, which comprises a seat board, bed die and formpiston, be provided with the type hole on the bed die, the type hole is the little shape in the big centre in both ends and both sides surface about its intercommunication bed die, the bed plate passes through guide pillar fixed connection together with the bed die, when to the downthehole suitable amount raw materials of injecting of type and with the formpiston suit in the type hole and make the formpiston upper surface flush the back with the bed die upper surface, the bed die forms the die cavity with the space of formpiston group, treat that the raw materials condenses the back and obtain the thin slice plastic part, still be provided with the air vent on the bed die, the. Adopt the technical scheme of the utility model, through making the direct suit of formpiston in the bed die, after making mould a piece condensation shaping, be convenient for take out it, through set up the air vent on the bed die, set up the exhaust hole on the formpiston, make the die cavity that can be filled up completely to the raw materials, make the tensile yield strength and the elongation at break of moulding all reach technical requirement, promoted and moulded a quality.

Description

Injection mold of nonmetal thin slice of big middle of both ends

Technical Field

The utility model belongs to the technical field of the mould, especially, relate to an injection mold of big middle little nonmetal thin slice in both ends.

Background

With the continuous development of manufacturing technology, the demand on various non-metal parts is increasing, and the requirements on the shape and performance of the non-metal parts are also increasing, at present, for a thin-wall non-metal part with large ends and small middle part, injection molding is usually adopted in the prior art, however, the raw material is often difficult to fully fill the whole cavity due to extremely thin wall thickness and irregular shape of the part, so that the finished part has many defects, the quality of the finished part is affected, the defective rate is high during mass production and manufacturing, and particularly when high-density polyethylene is adopted as the raw material, through actual measurement, the tensile yield strength and the elongation at break of the prepared part cannot meet the technical requirements, and the product quality is affected, so that a special novel mold is urgently required to be developed to improve the product quality.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an injection mold of little non-metallic thin slice in the middle of the both ends are big.

The utility model discloses a following technical scheme can realize.

The utility model provides an injection mold of little non-metallic sheet in big centre in both ends, including bedplate, bed die and formpiston, be provided with the type hole on the bed die, the type hole is the big little shape in the middle of both ends and its intercommunication both sides surface about the bed die, the bedplate passes through guide pillar fixed connection with the bed die and is in the same place, work as to the downthehole proper amount raw materials of injecting of type and inciting somebody to action the formpiston suit in the type hole and make the formpiston upper surface with the bed die upper surface flushes the back, the bed die forms the die cavity with the space of formpiston, treats that the raw materials condenses the back obtains thin slice plastic part, still be provided with the air vent on the bed die, the bed die with formpiston mating surface.

The thin sheet plastic part is made of high-density polyethylene.

The clearance between the matching surfaces of the female die and the male die is less than 0.01 mm.

The outer diameter of the guide post is not less than 8 mm.

The number of the vent holes is multiple, and the vent holes are uniformly distributed on the periphery of the shaped hole.

The number of the vent holes is 8 to 10.

And a plurality of exhaust holes are also formed in the male die, and each exhaust hole is communicated with the corresponding vent hole one to one.

The whole female die is in a cuboid shape, and the dimension specification is 200mm multiplied by 80mm multiplied by 30mm multiplied by width multiplied by thickness.

The thickness of the male die is more than 7 times of that of the cavity.

The beneficial effects of the utility model reside in that: adopt the technical scheme of the utility model, through making the direct suit of formpiston in the bed die, the thickness of moulding through the clearance control between bed die and the formpiston, after moulding a condensation forming, at first with bedplate and bed die separation, then can be with moulding a separation from the formpiston by the ejector pin, and convenient for operation, in addition, still through setting up the air vent on the bed die, and set up corresponding exhaust hole on the formpiston, make the raw materials in the condensation forming process, the air that mix with in the raw materials can pass through the air vent, the exhaust hole is discharged completely, thereby make the raw materials can fill up the die cavity completely, the manufacturing quality of finished product part has been guaranteed, make the tensile yield strength and the elongation at break of moulding all reach technical requirement, the defective percentage has been reduced, make the performance demand of finished product part obtain satisfying.

Drawings

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

fig. 2 is a top view of the female mold of the present invention;

fig. 3 is a cross-sectional view of the female mold of the present invention taken along a-a in fig. 2;

figure 4 is a top view of the male mold of the present invention;

figure 5 is a front view of the male mold of the present invention.

In the figure: 1-seat plate, 2-female die, 3-male die, 4-guide post, 5-vent hole, 6-type hole and 7-exhaust hole.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1 to 5, the utility model provides an injection mold of little non-metallic sheet in big centre in both ends, including bedplate 1, bed die 2 and formpiston 3, be provided with shaping hole 6 on the bed die 2, shaping hole 6 is the big little shape in the middle of both ends and both sides surface about its intercommunication bed die 2, bedplate 1 passes through guide pillar 4 fixed connection with bed die 2 and is in the same place, inject proper amount raw materials and with formpiston 3 suit in shaping hole 6 and make the 3 upper surface of formpiston flush the back with 2 upper surface of bed die in to the downthehole 6 of the type, bed die 2 forms the die cavity with the space of formpiston 3, treat and obtain thin slice plastic parts after the raw materials condensation, still be provided with air vent 5 on the bed die 2, bed die 2 and 3 mating surface's of formpiston clearance and air.

Furthermore, the material of the thin sheet plastic piece is high-density polyethylene. The clearance between the matching surfaces of the female die 2 and the male die 3 is less than 0.01 mm. The outer diameter of the guide post 4 is not less than 8 mm. The number of the vent holes 5 is multiple, and the vent holes 5 are uniformly arranged around the shaped hole 6. The number of the vent holes 5 is 8 to 10.

In addition, a plurality of exhaust holes 7 are further formed in the male die 3, and each exhaust hole 7 is communicated with the corresponding vent hole 5 one by one. The female die 2 has a rectangular parallelepiped shape as a whole, and its dimensions are 200mm × 80mm × 30mm in length × width × thickness. The thickness of the male die 3 is more than 7 times of the thickness of the die cavity.

Adopt the technical scheme of the utility model, through making the direct suit of formpiston in the bed die, the thickness of moulding through the clearance control between bed die and the formpiston, after moulding a condensation forming, at first with bedplate and bed die separation, then can be with moulding a separation from the formpiston by the ejector pin, and convenient for operation, in addition, still through setting up the air vent on the bed die, and set up corresponding exhaust hole on the formpiston, make the raw materials in the condensation forming process, the air that mix with in the raw materials can pass through the air vent, the exhaust hole is discharged completely, thereby make the raw materials can fill up the die cavity completely, the manufacturing quality of finished product part has been guaranteed, make the tensile yield strength and the elongation at break of moulding all reach technical requirement, the defective percentage has been reduced, make the performance demand of finished product part obtain satisfying.

Claims

1. The utility model provides an injection mold of big middle little non-metal sheet in both ends which characterized in that: including bedplate (1), bed die (2) and formpiston (3), be provided with shaping hole (6) on bed die (2), shaping hole (6) are the big little shape in middle of both ends and its intercommunication about bed die (2) both sides surface, bedplate (1) and bed die (2) are in the same place through guide pillar (4) fixed connection, work as to inject right amount of raw materials and will in shaping hole (6) formpiston (3) suit in shaping hole (6) and make formpiston (3) upper surface with bed die (2) upper surface flushes the back, bed die (2) and the clearance of formpiston (3) constitute the die cavity, obtain thin slice plastic parts after waiting the raw materials condensation, still be provided with air vent (5) on bed die (2), the clearance of bed die (2) and formpiston (3) cooperation surface with air vent (5) intercommunication.

2. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: the thin sheet plastic part is made of high-density polyethylene.

3. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: the clearance between the matching surfaces of the female die (2) and the male die (3) is less than 0.01 mm.

4. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: the outer diameter of the guide post (4) is not less than 8 mm.

5. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: the number of the vent holes (5) is multiple, and the vent holes (5) are uniformly distributed around the shaped hole (6).

6. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 5, wherein: the number of the vent holes (5) is 8-10.

7. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: a plurality of exhaust holes (7) are further formed in the male die (3), and each exhaust hole (7) is communicated with the corresponding vent hole (5) one by one.

8. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: the female die (2) is a cuboid and has dimensions of 200mm by 80mm by 30 mm.

9. An injection mold for nonmetal flakes with big and small ends and middle parts according to claim 1, wherein: the thickness of the male die (3) is more than 7 times of that of the cavity.