CN216544520U

CN216544520U - Exhaust structure of injection mold

Info

Publication number: CN216544520U
Application number: CN202122828348.8U
Authority: CN
Inventors: 周建国; 孟丽丽
Original assignee: Suzhou Kelkangdi Electronic Technology Co ltd
Current assignee: Suzhou Kelkangdi Electronic Technology Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-17
Anticipated expiration: 2031-11-18

Abstract

The utility model belongs to the technical field of injection molds, in particular to an exhaust structure of an injection mold, which aims at solving the problems that the prior art is inconvenient to exhaust air in the injection mold, is easy to block during air exhaust and affects the subsequent injection molding operation, and provides a scheme that the exhaust structure comprises an upper mold and a lower mold, wherein the outer wall of the upper mold is fixedly connected with four positioning blocks, the outer wall of the lower mold is provided with four positioning holes, the inner walls of the four positioning holes are respectively connected with the outer walls of the four positioning blocks in a sliding manner, the outer wall of the upper mold is provided with a round hole, the inner wall of the round hole is fixedly connected with an injection molding pipe, the top of the upper mold is provided with a sliding hole, the exhaust structure has the advantages that the vent holes on the side surfaces of the vent pipes are rotated by arranging a rotating block and then leak, the air is continuously exhausted, the subsequent injection molding operation is avoided being affected, the vent pipes are pulled out by a first magnet and a second magnet to clean the vent holes, meanwhile, the shaping of the plastic is accelerated through the cooling pipe and the cooling plate.

Description

Exhaust structure of injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to an exhaust structure of an injection mold.

Background

In the life of people, a large number of plastic products are used, and most of the plastic products are produced by injection molds. In the injection molding process, gases are present in the cavity of the injection mold due to, for example, air in the cavity, moisture contained in the plastic material evaporating at high temperature, or the plastic decomposing at high temperature, and if these gases are not smoothly discharged, the defects such as scorching, poor filling, poor appearance, damage to appearance, bubbles, silver wires, weld lines, and dimensional deviation may occur.

In the prior art, air in an injection mold is not convenient to exhaust, and is easy to block when the air is exhausted, so that the subsequent injection molding operation is affected, and therefore an exhaust structure of the injection mold is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that air in an injection mold is not convenient to exhaust, and the subsequent injection molding operation is affected due to easy blockage during air exhaust, and provides an exhaust structure of the injection mold.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an injection mold exhaust structure, includes mould and lower mould, four locating pieces of outer wall fixedly connected with of mould, four locating holes have been seted up to the outer wall of lower mould, the inner wall of four locating holes respectively with the outer wall sliding connection of four locating pieces, the round hole has been seted up to the outer wall of last mould, the inner wall fixedly connected with injection molding pipe of round hole, the slide opening has been seted up at the top of last mould, and the inner wall sliding connection of slide opening has the permeability cell, the fixed cover of outer wall of permeability cell is equipped with the rotation piece, a plurality of bleeder vents have evenly been seted up to the outer wall of permeability cell, the circular slot has been seted up to the outer wall of last mould, and the inner wall sliding connection of circular slot has the circle piece, the outer wall fixedly connected with connecting rod of circle piece, the outer wall cover of connecting rod is equipped with the spring, the one end of spring and the inner wall fixed connection of circular slot, the outer wall of last mould is equipped with exhaust mechanism.

Preferably, the exhaust mechanism comprises a rectangular block, the other end of the spring is fixedly connected with the outer wall of the round block, the outer wall of the upper die is provided with a rectangular groove, the inner wall of the rectangular groove is provided with a guide hole, the inner wall of the guide hole is connected with the outer wall of the connecting rod in a sliding manner, one end of the connecting rod is fixedly connected with the outer wall of the rectangular block, the outer wall of the rectangular block is connected with the inner wall of the rectangular groove in a sliding manner, the outer wall of the round block is connected with the outer wall of the ventilating pipe in a sliding manner, and the guide rod is arranged to assist the straight line movement of the round block.

Preferably, the inner wall of the lower die is fixedly connected with a cooling plate.

Preferably, a plurality of through-holes have evenly been seted up to the outer wall of cooling plate, the inner wall sliding connection of through-hole has the cooling tube, makes plastics carry out quick design through setting up the cooling tube.

Preferably, a plurality of copper buckles are evenly fixedly connected to two sides of the outer wall of the lower die, the outer wall of each copper buckle is connected with the outer wall of the cooling pipe in a sliding mode, the cooling pipe is separated from the copper buckles in a branching mode, and the cooling effect is prevented from being influenced due to the fact that the copper buckles are arranged in a crossed winding mode.

Preferably, the outer wall of the upper die is provided with an assembly groove, and the first magnet is fixedly connected inside the assembly groove.

Preferably, the outer wall of the vent pipe is fixedly sleeved with a second magnet, and the second magnet is magnetically connected with the first magnet.

Compared with the prior art, the utility model has the advantages that:

this scheme circle piece receives the continuous extrusion force that increases of inside air pressure, remove through connecting rod and spring, the circle piece carries out rectilinear movement under the effect of rectangular block and rectangular channel, the air in the die cavity passes through permeability cell and bleeder vent and discharges, spill after the bleeder vent through setting up the side of rotatory piece messenger permeability cell rotates, the air continues to discharge, avoid influencing follow-up operation of moulding plastics, the permeability cell is extracted through first magnet and second magnet, clear up the bleeder vent, accelerate the design of plastics through cooling tube and cooling plate simultaneously.

Drawings

FIG. 1 is a schematic perspective view of an exhaust structure of an injection mold according to the present invention;

FIG. 2 is a schematic cross-sectional view of an air venting structure of an injection mold according to the present invention;

fig. 3 is an enlarged schematic structural diagram of a portion a in fig. 2 of an exhaust structure of an injection mold according to the present invention.

In the figure: 1. an upper die; 2. positioning blocks; 3. a lower die; 4. a cooling plate; 5. a through hole; 6. copper buckle; 7. injecting a tube; 8. a gas permeable pipe; 9. a second magnet; 10. rotating the block; 11. air holes are formed; 12. a round block; 13. a connecting rod; 14. a spring; 15. a rectangular groove; 16. a rectangular block.

Detailed Description

Shown in figures 1-3, which relates to an exhaust structure of an injection mold, comprising an upper mold 1 and a lower mold 3, wherein the outer wall of the upper mold 1 is fixedly connected with four positioning blocks 2, the outer wall of the lower mold 3 is provided with four positioning holes, the inner walls of the four positioning holes are respectively connected with the outer walls of the four positioning blocks 2 in a sliding manner, the inner wall of the lower mold 3 is fixedly connected with a cooling plate 4, the outer wall of the cooling plate 4 is uniformly provided with a plurality of through holes 5, the inner wall of each through hole 5 is connected with a cooling pipe in a sliding manner, the cooling pipe and the cooling plate 4 accelerate the shaping of plastics, the outer wall of the upper mold 1 is provided with a round hole, the inner wall of the round hole is fixedly connected with an injection molding pipe 7, the top of the upper mold 1 is provided with a slide hole, the inner wall of the slide hole is connected with a vent pipe 8 in a sliding manner, the outer wall of the vent pipe 8 is fixedly sleeved with a rotating block 10, the outer wall of the vent pipe 8 is uniformly provided with a plurality of vent holes 11, and two sides of the outer wall of the lower mold 3 are uniformly and fixedly connected with a plurality of copper buckles 6, the outer wall of copper knot 6 and the outer wall sliding connection of cooling tube, go up the outer wall of mould 1 and seted up the circular slot, the inner wall sliding connection of circular slot has a disk 12, the outer wall fixedly connected with connecting rod 13 of disk 12, the outer wall cover of connecting rod 13 is equipped with spring 14, spring 14 can reset disk 12, the one end of spring 14 and the inner wall fixed connection of circular slot, the outer wall of last mould 1 is equipped with exhaust mechanism.

Shown by fig. 2 and 3, exhaust mechanism includes rectangular block 16, rectangular block 12 rectilinear movement is assisted to rectangular block 16, the other end of spring 14 and the outer wall fixed connection of circular block 12, the assembly groove has been seted up to the outer wall of last mould 1, the first magnet of inside fixedly connected with of assembly groove, rectangular groove 15 has been seted up to the outer wall of last mould 1, the guiding hole has been seted up to the inner wall of rectangular groove 15, the inner wall of guiding hole and the outer wall sliding connection of connecting rod 13, the one end of connecting rod 13 and the outer wall fixed connection of rectangular block 16, the outer wall fixed cover of permeability cell 8 is equipped with second magnet 9, second magnet 9 is connected with first magnet magnetism, first magnet carries out the rigidity to permeability cell 8 with second magnet 9, the outer wall of rectangular block 16 and the inner wall sliding connection of rectangular groove 15, the outer wall of circular block 12 and the outer wall sliding connection of permeability cell 8.

The working principle is as follows: in the injection molding process, an upper mold 1 is pressed down to be combined with a positioning hole and a lower mold 3 through four positioning blocks 2, melted plastic raw materials enter a mold cavity through an injection molding pipe 7, when air in the mold cavity is continuously compressed through the injection molding process, a round block 12 is subjected to extrusion force with continuously increased internal air pressure, and accordingly the round block and a spring 14 move outwards through a connecting rod 13, the round block 12 linearly moves through a rectangular block 16 and a rectangular groove 15, after the round block 12 moves for a certain position, a vent pipe 8 leaks, further the air in the mold cavity is discharged through a vent hole 11, in order to prevent high-temperature plastic from entering the vent hole 11 through the round groove and blocking the vent pipe 8, a rotating block 10 can be rotated to enable the vent hole 11 on the side surface of the vent pipe 8 to leak, so that the air is continuously discharged, the influence on subsequent injection molding operation is avoided, the vent pipe 8 can be pulled out through a first magnet and a second magnet 9 at fixed time, the air holes 11 are cleaned, and meanwhile, the shaping of the plastic is accelerated through the cooling pipe and the cooling plate 4.

The above descriptions are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to, replaced or changed.

Claims

1. An exhaust structure of an injection mold comprises an upper mold (1) and a lower mold (3), and is characterized in that the outer wall of the upper mold (1) is fixedly connected with four positioning blocks (2), the outer wall of the lower mold (3) is provided with four positioning holes, the inner walls of the four positioning holes are respectively in sliding connection with the outer walls of the four positioning blocks (2), the outer wall of the upper mold (1) is provided with a round hole, the inner wall of the round hole is fixedly connected with an injection molding pipe (7), the top of the upper mold (1) is provided with a sliding hole, the inner wall of the sliding hole is in sliding connection with a vent pipe (8), the outer wall of the vent pipe (8) is fixedly sleeved with a rotating block (10), the outer wall of the vent pipe (8) is uniformly provided with a plurality of vent holes (11), the outer wall of the upper mold (1) is provided with a circular groove, the inner wall of the circular groove is in sliding connection with a circular block (12), the outer wall of the circular block (12) is fixedly connected with a connecting rod (13), the outer wall cover of connecting rod (13) is equipped with spring (14), the one end of spring (14) and the inner wall fixed connection of circular slot, the outer wall of going up mould (1) is equipped with exhaust mechanism.

2. An injection mold exhaust structure according to claim 1, characterized in that the exhaust mechanism comprises a rectangular block (16), the other end of the spring (14) is fixedly connected with the outer wall of the round block (12), the outer wall of the upper mold (1) is provided with a rectangular groove (15), the inner wall of the rectangular groove (15) is provided with a guide hole, the inner wall of the guide hole is slidably connected with the outer wall of the connecting rod (13), one end of the connecting rod (13) is fixedly connected with the outer wall of the rectangular block (16), the outer wall of the rectangular block (16) is slidably connected with the inner wall of the rectangular groove (15), and the outer wall of the round block (12) is slidably connected with the outer wall of the vent pipe (8).

3. An injection mold venting structure as defined in claim 1, wherein a cooling plate (4) is fixedly attached to the inner wall of said lower mold (3).

4. An injection mold exhaust structure according to claim 3, characterized in that the outer wall of the cooling plate (4) is uniformly provided with a plurality of through holes (5), and the inner wall of the through holes (5) is slidably connected with a cooling pipe.

5. An injection mold exhaust structure according to claim 4, characterized in that a plurality of copper buttons (6) are uniformly and fixedly connected to two sides of the outer wall of the lower mold (3), and the outer wall of the copper buttons (6) is in sliding connection with the outer wall of the cooling pipe.

6. An injection mold exhaust structure according to claim 1, characterized in that the outer wall of the upper mold (1) is provided with an assembly groove, and the first magnet is fixedly connected inside the assembly groove.

7. An injection mold venting structure as defined in claim 6, wherein a second magnet (9) is fixedly sleeved on the outer wall of said vent pipe (8), said second magnet (9) being magnetically connected to said first magnet.