Injection mold for automotive trim cover plate

Abstract

The utility model discloses an automobile interior trim cover plate injection mold, which relates to the technical field of injection molds and comprises a lower mold and an upper mold, the lower mold covers the upper mold, an injection pipe is fixed and connected to the upper mold in a penetrating manner, a cylinder is mounted on one side of the injection pipe, and the cylinder is mounted on the other side of the injection pipe. A liquid discharging cavity and a pressurizing cavity are formed in the upper mold, the liquid discharging cavity is communicated with the pressurizing cavity, a movable plug is slidably connected to the interior of the pressurizing cavity, the output end of the air cylinder is fixedly connected with the movable plug, and mold cavities are formed in the lower mold and the upper mold; liquid materials can enter the mold cavity through the liquid discharging cavity and the pressurizing cavity, the air cylinder is started after the materials in the mold cavity are injected, the output end of the air cylinder drives the movable plug to move in the pressurizing cavity, the movable plug can exert pressure on the liquid materials in the mold cavity when moving downwards, and the mold cavity can be filled with the liquid materials; the shaking condition of liquid materials in the mold cavity is reduced, and the injection molding quality of the mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for an automobile interior decoration cover plate. Background Art

[0002] In the domestic market, the sales of mid-to-high-end cars continue to grow, and the demand for high-quality high-end products will continue to increase. The concept of environmental protection and health is popular, and automotive interior products have also begun to focus on green concepts. Environmentally friendly and healthy products will be a major trend in the development of automobiles. Improving the interior design of the car and improving the comfort of riding have also been widely adopted by mid-to-high-end cars. The Chinese patent discloses an injection mold for automotive interior cover (authorization announcement number CN213440884U). The patented technology can be provided with a first heat insulation cover and a second heat insulation cover. The two can wrap the cavity through the closing of the concave mold and the convex mold to prevent the heat in the cavity from being lost, and avoid the molten plastic from being cooled and formed in advance in the process of filling the cavity, thereby improving the appearance quality of the finished interior cover and reducing the number of defective products. However, when the material is added to the above-mentioned mold cavity, the material needs to be injected into the mold cavity through the injection tube, and when the injection tube stops injecting the material, the material inside the mold cavity will lose pressure. After the material inside the mold cavity loses pressure, the liquid material may sway inside the mold cavity, thereby affecting the quality of the material inside the mold after cooling and molding. Therefore, an automobile interior trim cover injection mold is provided to solve the problems raised in the above background technology. Utility Model Content

[0003] The utility model aims to provide an injection mold for an automobile interior decoration cover plate to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An injection mold for an automobile interior cover comprises a lower mold and an upper mold, wherein the lower mold covers the upper mold, an injection tube is fixed on and connected to the upper mold, a cylinder is installed on one side of the injection tube, a drainage cavity and a pressurizing cavity are provided inside the upper mold, the drainage cavity is connected to the pressurizing cavity, a movable plug is slidably connected to the inside of the pressurizing cavity, the output end of the cylinder is fixedly connected to the movable plug, and a mold cavity is provided inside the lower mold and the upper mold, and the mold cavity is connected to the pressurizing cavity.

[0006] As a further solution of the utility model: wherein, a working base plate is installed below the lower mold, a gantry is installed on one side of the working base plate, a hydraulic cylinder is installed on the gantry, and an output end of the hydraulic cylinder is fixedly connected to the upper mold.

[0007] As a further solution of the utility model: wherein, heat-conducting blocks are installed inside the upper mold and the lower mold, and the heat-conducting blocks are located outside the mold cavity.

[0008] As a further solution of the utility model: wherein, a plurality of heat dissipation pipes are installed inside the heat conductive block, both sides of the heat dissipation pipes are fixed and connected with circulation pipes, a mounting frame is installed on the working base plate, a water pump is installed on the mounting frame, a plurality of cooling pipes are installed inside the mounting frame, and both ends of the plurality of cooling pipes are respectively connected with the water pump and the circulation pipe.

[0009] As a further solution of the utility model: wherein, a heat dissipation fan is arranged on one side of the mounting frame, and the heat dissipation fan is aligned with the mounting frame.

[0010] As a further solution of the utility model: wherein, the circulation pipe is made of elastic material, and the length of the circulation pipe is set in proportion to the length of the output end of the hydraulic cylinder.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The material is injected into the mold cavity inside the lower mold and the upper mold through the injection tube. The liquid material will enter the mold cavity through the drainage cavity and the pressurizing cavity. After the injection of the mold cavity material is completed, the cylinder is started so that the output end of the cylinder drives the movable plug to move inside the pressurizing cavity. The movable plug will apply pressure to the liquid material inside the mold cavity when moving downward, so that the liquid material can fill the mold cavity, reduce the shaking of the liquid material inside the mold cavity, and improve the injection molding quality of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cooling pipe structure in the utility model;

[0015] Figure 3 It is a side view schematic diagram of the overall structure of the utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the lower mold structure of the utility model;

[0017] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0018] 1. Working base plate; 101. Gantry; 102. Hydraulic cylinder; 2. Lower mold; 3. Upper mold; 301. Injection tube; 302. Cylinder; 303. Movable plug; 304. Drain cavity; 305. Pressurizing cavity; 306. Mold cavity; 4. Heat transfer block; 401. Heat dissipation pipe; 402. Circulation pipe; 403. Water pump; 404. Mounting frame; 405. Cooling pipe; 406. Cooling fan. DETAILED DESCRIPTION

[0019] See also Figures 1 to 4 : An injection mold for an automobile interior cover, comprising a lower mold 2 and an upper mold 3, the lower mold 2 covers the upper mold 3, an injection tube 301 is fixed and connected to the upper mold 3, a cylinder 302 is installed on one side of the injection tube 301, a drainage cavity 304 and a pressurizing cavity 305 are provided inside the upper mold 3, the drainage cavity 304 is connected to the pressurizing cavity 305, a movable plug 303 is slidably connected to the inside of the pressurizing cavity 305, the output end of the cylinder 302 is fixedly connected to the movable plug 303, and a mold cavity 306 is provided inside the lower mold 2 and the upper mold 3, and the mold cavity 306 is connected to the pressurizing cavity 305.

[0020] Among them, the liquid material will enter the mold cavity 306 through the drainage cavity 304 and the pressurizing cavity 305. After the material injection into the mold cavity 306 is completed, the cylinder 302 is started so that the output end of the cylinder 302 drives the movable plug 303 to move inside the pressurizing cavity 305. When the movable plug 303 moves downward, it will apply pressure to the liquid material inside the mold cavity 306, so that the liquid material can fill the mold cavity 306, reduce the shaking of the liquid material inside the mold cavity 306, and improve the injection molding quality of the mold.

[0021] Preferably, a working base plate 1 is installed below the lower mold 2 , a gantry 101 is installed on one side of the working base plate 1 , a hydraulic cylinder 102 is installed on the gantry 101 , and an output end of the hydraulic cylinder 102 is fixedly connected to the upper mold 3 .

[0022] The opening or closing of the mold is controlled by the hydraulic cylinder 102, so as to facilitate the removal of the materials inside the lower mold 2 and the upper mold 3.

[0023] Preferably, heat conducting blocks 4 are installed inside the upper mold 3 and the lower mold 2 , and the heat conducting blocks 4 are located outside the mold cavity 306 .

[0024] The heat conducting block 4 can evenly conduct the internal heat of the upper mold 3 and the lower mold 2 to avoid overheating of any part inside the upper mold 3 and the lower mold 2.

[0025] Preferably, a plurality of heat dissipation pipes 401 are installed inside the heat conductive block 4, and both sides of the heat dissipation pipes 401 are fixed and connected with circulation pipes 402, a mounting frame 404 is installed on the working base plate 1, a water pump 403 is installed on the mounting frame 404, and a plurality of cooling pipes 405 are installed inside the mounting frame 404, and both ends of the plurality of cooling pipes 405 are respectively connected with the water pump 403 and the circulation pipe 402.

[0026] The heat dissipation pipe 401 can dissipate heat for the heat conductive block 4 , and at the same time, the internal heat of the upper mold 3 and the lower mold 2 can be taken out through the heat dissipation pipe 401 , thereby preventing the internal heat of the upper mold 3 and the lower mold 2 from accumulating for a long time.

[0027] Preferably, a heat dissipation fan 406 is disposed on one side of the mounting frame 404 , and the heat dissipation fan 406 is aligned with the mounting frame 404 .

[0028] Among them, liquid heat dissipation medium is provided inside the circulation pipe 402 and the heat dissipation pipe 401, which can absorb the internal heat of the upper mold 3 and the lower mold 2, and then take out the internal heat of the upper mold 3 and the lower mold 2 through the water pump 403, and then dissipate the heat of the cooling pipe 405 through the cooling fan 406, so that the internal medium of the circulation pipe 402 and the heat dissipation pipe 401 is always kept at a low temperature.

[0029] Preferably, the circulation pipe 402 is made of elastic material, and the length of the circulation pipe 402 is set in proportion to the length of the output end of the hydraulic cylinder 102 .

[0030] The length of the circulation pipe 402 and the length of the output end of the hydraulic cylinder 102 are between 2:3 or 2:4, and this length can ensure that there is no motion interference between the upper mold 3 and the circulation pipe 402 when the upper mold 3 moves upward.

[0031] Working principle: Material is injected into the mold cavity 306 inside the lower mold 2 and the upper mold 3 through the injection tube 301, and the liquid material will enter the mold cavity 306 through the drainage cavity 304 and the pressurizing cavity 305. After the injection of the material into the mold cavity 306 is completed, the cylinder 302 is started so that the output end of the cylinder 302 drives the movable plug 303 to move inside the pressurizing cavity 305, and the movable plug 303 will exert pressure on the liquid material inside the mold cavity 306 when moving downward, so that the liquid material can fill the mold cavity 306, reduce the shaking of the liquid material inside the mold cavity 306, and improve the injection molding quality of the mold.

[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold for an automobile interior cover, comprising a lower mold (2) and an upper mold (3), characterized in that: The lower mold (2) covers the upper mold (3); an injection tube (301) is fixed on and connected to the upper mold (3); a cylinder (302) is installed on one side of the injection tube (301); a drainage cavity (304) and a pressurizing cavity (305) are provided inside the upper mold (3); the drainage cavity (304) is connected to the pressurizing cavity (305); a movable plug (303) is slidably connected inside the pressurizing cavity (305); the output end of the cylinder (302) is fixedly connected to the movable plug (303); a mold cavity (306) is provided inside the lower mold (2) and the upper mold (3); the mold cavity (306) is connected to the pressurizing cavity (305).

2. The automotive interior cover plate injection mold according to claim 1, characterized in that: A working base plate (1) is installed below the lower mold (2), a gantry (101) is installed on one side of the working base plate (1), a hydraulic cylinder (102) is installed on the gantry (101), and an output end of the hydraulic cylinder (102) is fixedly connected to the upper mold (3).

3. The automotive interior cover plate injection mold according to claim 2, characterized in that: Heat-conducting blocks (4) are installed inside the upper mold (3) and the lower mold (2), and the heat-conducting blocks (4) are located outside the mold cavity (306).

4. The automotive interior trim cover plate injection mold according to claim 3, characterized in that: A plurality of heat dissipation pipes (401) are installed inside the heat conductive block (4), and a circulation pipe (402) is fixed on both sides of the heat dissipation pipe (401) and connected therethrough. A mounting frame (404) is installed on the working base plate (1), and a water pump (403) is installed on the mounting frame (404). A plurality of cooling pipes (405) are installed inside the mounting frame (404), and two ends of the plurality of cooling pipes (405) are respectively connected to the water pump (403) and the circulation pipe (402).

5. The automobile interior trim cover injection mold according to claim 4, characterized in that: A heat dissipation fan (406) is disposed on one side of the mounting frame (404), and the heat dissipation fan (406) is aligned with the mounting frame (404).

6. The automobile interior trim cover plate injection mold according to claim 4, characterized in that: The circulation pipe (402) is made of elastic material, and the length of the circulation pipe (402) is set in proportion to the length of the output end of the hydraulic cylinder (102).

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