CN210389971U

CN210389971U - Injection mold for auto-parts

Info

Publication number: CN210389971U
Application number: CN201921439418.7U
Authority: CN
Inventors: 刘同鹏; 李海银
Original assignee: Qingdao Xinju Precision Mould Co ltd
Current assignee: Qingdao Xinju Precision Mould Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-04-24
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses an injection mold for auto-parts, including the movable mould, the cover half, the cylinder, go up the die cavity, lower die cavity, the equal fixed mounting of cover half and cylinder, the cylinder is installed on the movable mould, the movable mould is located the top of cover half, be provided with the die cavity on the movable mould, be provided with lower die cavity on the cover half, form the die cavity of accessory between, be provided with the sprue on the movable mould, sprue connection runner and last die cavity, be provided with the heating chamber on the cover half, be provided with the heating pipe in, be provided with pressure regulating gas pocket and high temperature venthole on the heating chamber, the low temperature inlet port, be provided with the hot-air exchange cavity on the movable mould, be provided with the pressure regulating gas pocket, high temperature inlet port. This mould heats the die cavity before injection mold operation, then keeps warm and pours into high temperature melting liquid into, treats that the injection is accomplished, and the heating device is removed to the flow gently back in the liquid, carries out the cooling shaping of product, and the product shaping is effectual.

Description

Injection mold for auto-parts

Technical Field

The utility model relates to an auto-parts processing field specifically is an injection mold for auto-parts.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

In the existing injection mold, high-temperature molten liquid is injected into a mold with relatively low temperature, the high-temperature molten liquid is rapidly cooled to generate bubbles, the liquid firstly contacting the mold is firstly condensed, and the later liquid is attached to the former solidified body, so that defects are easily generated in the molding process of the injection mold, and the defective rate is high.

SUMMERY OF THE UTILITY MODEL

In order to overcome injection mold among the prior art at fashioned in-process, the difference in temperature leads to the product to cause a lot of defect scheduling problems in the forming process greatly between mould and the high temperature molten liquid, the utility model provides an injection mold for auto-parts that mould preheats heats the die cavity before injection mold operates, then keeps warm and pours into high temperature molten liquid into, treats the injection and accomplishes, and the heating device is removed after flowing gently in the liquid, carries out the cooling shaping of product.

The utility model provides a technical scheme that its technical problem adopted is: an injection mold for auto-parts comprises a movable mold, a fixed mold, a cylinder, an upper mold cavity and a lower mold cavity, wherein the fixed mold is relatively fixed with the ground, the cylinder is fixedly installed on a fixed cross beam, the bottom end of a piston rod of the cylinder is fixedly installed on the upper surface of the movable mold, the movable mold is positioned above the fixed mold, the lower surface of the movable mold is provided with the upper mold cavity, a lower mold cavity is arranged on the upper surface of the fixed mold, when the movable mold and the fixed mold are combined together, the upper mold cavity and the lower mold cavity form a mold cavity of the processed auto-parts, a sprue is arranged on the movable mold, the sprue runs through the upper part and the lower part of the movable mold, a sprue is arranged at the upper surface of the movable mold, the sprue is connected with the upper mold cavity, an air heating cavity is further arranged below the lower mold cavity, the air heating cavity is of a rectangular cavity structure, two ends of the heating pipe penetrate through the left wall of the air heating cavity and extend out of the fixed die, two pressure adjusting air holes are respectively arranged on the left wall and the right wall of the air heating cavity, a high-temperature air outlet hole is also formed in the left wall of the air heating cavity, a low-temperature air inlet hole is formed in the right wall of the air heating cavity, the moving die is provided with a hot air exchange cavity above the upper die cavity, the hot air exchange cavity is of a cuboid cavity structure, the left wall and the right wall of the hot air exchange cavity are respectively provided with two pressure adjusting air holes, the left wall of the hot air exchange cavity is also provided with a high-temperature air inlet hole, the right wall of the hot air exchange cavity is provided with a low-temperature air outlet hole, the high-temperature air outlet hole and the high-temperature air inlet hole are correspondingly connected up and down through an air hose, and the low-temperature air outlet hole and the low-temperature air inlet hole are correspondingly connected up and down through an air hose.

Foretell an injection mold for auto-parts, the cylinder has two, and the equipartition both ends about the cover half top, and same air supply and synchronous working are connected to two cylinders.

The injection mold for the automobile accessories is characterized in that the heating pipe is an electric heating pipe, two ends of the heating pipe are connected with a power supply, or the heating pipe is a water heating pipe, and two ends of the heating pipe are connected with a hot water heating device.

Foretell an injection mold for auto-parts, install small-size circulating fan on the right side inner wall in air heating chamber, circulating fan is connected with the power cord, and the power cord passes the right wall connection outside power of cover half.

In the injection mold for the automobile parts, the diameter of the pressure adjusting air hole is 0.5-5 mm.

The beneficial effects of the utility model are that, the utility model discloses the mould has the heating pipe of preheating for produce auto-parts, heat the die cavity through the heating pipe before injection mold operation, then keep warm and pour into high temperature melting liquid into, treat that the injection is accomplished, flow in the liquid and remove heating device gently back, carry out the cooling shaping of product, make the cooling shaping effect of product better, be provided with the less pressure regulating gas pocket of diameter in the cavity at heating pipe place simultaneously, the heating pipe is at the in-process of heating, pressure regulating gas pocket can adjust the pressure balance in air heating chamber and the hot-air exchange cavity.

Drawings

The present invention will be further explained with reference to the drawings and examples.

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

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a sectional view taken along line C-C of fig. 2.

In the figure, 1, a moving die, 2, a fixed die, 3, an air cylinder, 4, a lower die cavity, 5, an upper die cavity, 6, an air heating cavity, 7, a hot air exchange cavity, 8, a heating pipe, 9, a pressure adjusting air hole, 10, a high-temperature air inlet hole, 11, a low-temperature air outlet hole, 12, a high-temperature air outlet hole, 13, a low-temperature air inlet hole, 14, a sprue and 15, a pouring gate are arranged.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

An injection mold for auto parts comprises a movable mold 1, a fixed mold 2, a cylinder 3, an upper mold cavity 5 and a lower mold cavity 4, wherein the fixed mold 2 is relatively fixed with the ground, the cylinder 3 is fixedly installed on a fixed cross beam, the bottom end of a piston rod of the cylinder 3 is fixedly installed on the upper surface of the movable mold 1, the movable mold 1 is positioned above the fixed mold 2, the lower surface of the movable mold 1 is provided with the upper mold cavity 5, a lower mold cavity 4 is arranged on the upper surface of the fixed mold 2, when the movable mold 1 and the fixed mold 2 are combined together, the upper mold cavity 5 and the lower mold cavity 4 form a mold cavity of a processed auto part, a sprue 14 is arranged on the movable mold 1, the sprue 14 runs through the upper part and the lower part of the movable mold 1, the sprue 14 is provided with a pouring gate 15 on the upper surface of the movable mold 1, the sprue 14 is connected with the pouring gate 15 and the upper mold cavity 5, the air heating cavity 6 is of a cuboid cavity structure, the lower surface of the air heating cavity 6 is fixedly provided with a heating pipe 8 which is arranged in a zigzag manner, two ends of the heating pipe 8 penetrate through the left wall of the air heating cavity 6 and extend out of the fixed die 2, the left wall and the right wall of the air heating cavity 6 are respectively provided with two pressure adjusting air holes 9, the left wall of the air heating cavity 6 is also provided with a high-temperature air outlet hole 12, the right wall of the air heating cavity 6 is provided with a low-temperature air inlet hole 13, the movable die 1 is provided with a hot air exchange cavity 7 above the upper die cavity 5, the hot air exchange cavity 7 is of a cuboid cavity structure, the left wall and the right wall of the hot air exchange cavity 7 are respectively provided with two pressure adjusting air holes 9, the left wall of the hot air exchange cavity 7 is also provided with a high-temperature air inlet hole 10, and the right wall of the hot air exchange cavity, the high-temperature air outlet hole 12 and the high-temperature air inlet hole 10 are correspondingly connected up and down through an air hose, and the low-temperature air outlet hole 11 and the low-temperature air inlet hole 13 are correspondingly connected up and down through an air hose.

Further, the number of the cylinders 3 is two, the cylinders are uniformly distributed at the left end and the right end above the fixed die 2, and the two cylinders 3 are connected with the same air source and work synchronously.

Further, the heating pipe 8 is an electric heating pipe, and two ends of the heating pipe 8 are connected with a power supply.

Further, a small circulating fan is installed on the inner wall of the right side of the air heating cavity 6, the circulating fan is connected with a power line, and the power line penetrates through the right wall of the fixed die 2 to be connected with an external power supply.

Further, the diameter of the pressure adjusting air hole 9 is 2mm, and the pressure adjusting air hole 9 is used for adjusting the pressure balance between the air heating cavity 6 and the hot air exchange cavity 7 in the heating process of the heating pipe 8.

The utility model discloses in the in-process of using, before the operation of moulding plastics, make heating pipe 8 be in work, to air heating chamber 6, be provided with circulating fan in the air heating chamber 6, make the hot-air in the air heating chamber 6 that heats get into hot-air exchange cavity 7 after high temperature inlet port 10 through high temperature venthole 12, the cold air in hot-air exchange cavity 7 gets into air heating chamber 6 after low temperature inlet port 13 through low temperature venthole 111, pressure regulation gas pocket 9 is used for adjusting the atmospheric pressure in two cavities, protection cover half 2 and movable mould 1 are not damaged because of the high pressure, after the temperature in two cavities reaches stably, merge cover half 2 and movable mould 1, form the model chamber, pour into high temperature molten liquid into the model chamber through runner 15 and sprue 14, after finishing injecting, after the molten liquid fills the mould chamber completely, remove the heating operation of heating pipe 8, and cooling the mold to form the product.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. An injection mold for automobile accessories comprises a movable mold (1), a fixed mold (2), a cylinder (3), an upper mold cavity (5) and a lower mold cavity (4), and is characterized in that the fixed mold (2) is relatively fixed with the ground, the cylinder (3) is fixedly installed on a fixed cross beam, the bottom end of a piston rod of the cylinder (3) is fixedly installed on the upper surface of the movable mold (1), the movable mold (1) is positioned above the fixed mold (2), the lower surface of the movable mold (1) is provided with the upper mold cavity (5), the lower mold cavity (4) is arranged on the upper surface of the fixed mold (2), when the movable mold (1) and the fixed mold (2) are combined together, the upper mold cavity (5) and the lower mold cavity (4) form a mold cavity for processing the automobile accessories, a sprue (14) is arranged on the movable mold (1), and the sprue (14) runs through the upper part and the lower part of, the sprue (14) is provided with a pouring gate (15) on the upper surface of the movable mold (1), the sprue (14) is connected with the pouring gate (15) and the upper mold cavity (5), the fixed mold (2) is also provided with an air heating cavity (6) under the lower mold cavity (4), the air heating cavity (6) is of a cuboid cavity structure, heating pipes (8) which are arranged in a zigzag manner are fixedly arranged on the lower surface of the air heating cavity (6), the two ends of each heating pipe (8) penetrate through the left wall of the air heating cavity (6) and extend out of the fixed mold (2), the left wall and the right wall of the air heating cavity (6) are respectively provided with two pressure adjusting air holes (9), the left wall of the air heating cavity (6) is further provided with a high-temperature air outlet hole (12), the right wall of the air inlet hole (6) is provided with a low-temperature air inlet hole (13), the movable mold (1) is provided with a heat exchange cavity (7) above the, the hot air exchange cavity (7) is of a cuboid cavity structure, two pressure adjusting air holes (9) are respectively formed in the left wall and the right wall of the hot air exchange cavity (7), a high-temperature air inlet hole (10) is further formed in the left wall of the hot air exchange cavity (7), a low-temperature air outlet hole (11) is formed in the right wall of the hot air exchange cavity (7), the high-temperature air outlet hole (12) and the high-temperature air inlet hole (10) are connected in an up-and-down corresponding mode through an air hose, and the low-temperature air outlet hole (11) and the low-temperature air inlet hole (13) are connected in an up-and-down corresponding mode through the.

2. The injection mold for the automobile parts, as recited in claim 1, characterized in that, there are two cylinders (3), which are uniformly distributed at the left and right ends above the fixed mold (2), and the two cylinders (3) are connected with the same air source and work synchronously.

3. The injection mold for the auto-parts according to claim 1, characterized in that the heating pipe (8) is an electric heating pipe (8), both ends of the heating pipe (8) are connected with a power supply, or the heating pipe (8) is a water heating pipe (8), both ends of the heating pipe (8) are connected with a hot water heating device.

4. An injection mold for automobile parts according to claim 1, characterized in that a small circulating fan is installed on the right inner wall of the air heating cavity (6), and the circulating fan is connected with a power cord which passes through the right wall of the fixed mold (2) to be connected with an external power supply.

5. The injection mold for automobile parts as claimed in claim 1, wherein the diameter of the pressure-regulating air hole (9) is 0.5-5 mm.