Double-color precision injection mold for automobile auxiliary instrument storage box

Abstract

The utility model provides a double-color precision injection mold for an automobile auxiliary instrument storage box, and belongs to the technical field of molds. The mold comprises an injection molding plate, an upper mold plate and a lower mold plate which are sequentially arranged from top to bottom, a first color forming cavity and a second color forming cavity are formed between the upper mold plate and the lower mold plate, and a first injection molding assembly connected with the first color forming cavity and a second injection molding assembly connected with the second color forming cavity are arranged in the injection molding plate. Injection molding liquid of two colors can be injected into the first color forming cavity and the second color forming cavity through the first injection molding assembly and the second injection molding assembly correspondingly, so that injection molding of the double-color storage box can be achieved, automatic core pulling can be achieved during mold opening through the mold opening automatic core pulling assembly, an oil cylinder does not need to be arranged, and the mold cost can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a double-color precision injection mold for a storage box of an automobile auxiliary instrument. Background Art

[0002] Automobile auxiliary instrument storage boxes are generally manufactured by injection molding. During the injection molding process, core blocks are provided on both sides of the molding cavity of the storage box mold and are horizontally inserted into the molding cavity. In the prior art, the core blocks are pulled out by providing an oil cylinder, but this results in a high mold cost.

[0003] For example, a Chinese patent discloses a balanced ejection mechanism for a large precision storage box mold for a complex automobile dashboard [application number: 202320876436.1], which includes an upper template and a lower template. A molding cavity is provided between the upper and lower templates. The front side of the lower template is provided with an inclined No. 1 core-pulling structure, and the angle between the No. 1 core-pulling structure and the lower template is an obtuse angle. The left and right sides of the lower template are further provided with a No. 2 core-pulling structure and a No. 3 core-pulling structure. The No. 2 core-pulling structure and the No. 3 core-pulling structure are horizontally arranged and have an obtuse angle at the connection with the lower template. Utility Model Content

[0004] The purpose of the utility model is to provide a two-color precision injection mold for a car auxiliary instrument storage box in order to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A two-color precision injection mold for a car auxiliary instrument storage box includes an injection molding plate, an upper mold plate, and a lower mold plate arranged in sequence from top to bottom. A No. 1 color molding cavity and a No. 2 color molding cavity are arranged between the upper mold plate and the lower mold plate. A No. 1 injection molding component connected to the No. 1 color molding cavity and a No. 2 injection molding component connected to the No. 2 color molding cavity are arranged in the injection molding plate. Automatic core pulling components for mold opening are symmetrically arranged on the front and rear sides of the No. 1 color molding cavity and the No. 2 color molding cavity.

[0007] In the above-mentioned two-color precision injection mold of the automobile auxiliary instrument storage box, the mold opening automatic core pulling assembly includes a core pulling slider arranged on the lower template through a sliding limit structure, the inner end of the core pulling slider is fixedly connected to the core block, and also includes a slider driving structure arranged on the upper template.

[0008] In the above-mentioned two-color precision injection mold of the automobile auxiliary instrument storage box, the slider driving structure includes a driving rod obliquely fixed to the bottom of the lower mold plate, and the driving rod is inserted into the core-pulling slider and slidably cooperates with the core-pulling slider.

[0009] In the above-mentioned two-color precision injection mold for the automobile auxiliary instrument storage box, the sliding limiting structure includes two limiting pressure plates arranged on both sides of the core-pulling slider.

[0010] In the above-mentioned two-color precision injection mold for the automobile auxiliary instrument storage box, the No. 1 injection molding component includes a No. 1 color injection molding tube vertically arranged in the injection molding plate, and the bottom of the No. 1 color injection molding tube passes through the upper mold plate and is connected to the No. 1 color molding cavity.

[0011] In the above-mentioned two-color precision injection mold of the automobile auxiliary instrument storage box, the No. 2 injection molding component includes a heating plate arranged in the injection molding plate, an electric heating wire is arranged on the heating plate, and a vertically arranged No. 2 color injection molding tube is fixedly connected to the bottom of the heating plate. The bottom of the No. 2 color injection molding tube passes through the upper template and is connected to the No. 2 color molding cavity.

[0012] In the above-mentioned two-color precision injection mold for the automobile auxiliary instrument storage box, a bottom plate is further provided on the lower side of the lower mold plate, and an ejection mechanism is provided between the bottom plate and the lower mold plate.

[0013] In the above-mentioned two-color precision injection mold of the automobile auxiliary instrument storage box, the ejection mechanism includes a top plate and a lifting assembly that can drive the top plate to rise and fall in the vertical direction. The top plate is provided with two combined ejector rod assemblies respectively connected to the No. 1 color molding cavity and the No. 2 color molding cavity.

[0014] In the above-mentioned two-color precision injection mold of the automobile auxiliary instrument storage box, the combined push rod assembly includes two inclined push rods that are arranged obliquely and corresponding to the core block. The bottom of the inclined push rod is rotatably connected to the top plate. The inclined push rod is inclined toward the side away from the core block. The combined push rod assembly also includes several vertically arranged straight push rods.

[0015] In the above-mentioned two-color precision injection mold for the automobile auxiliary instrument storage box, the lifting assembly includes four lifting cylinders fixed to the side of the lower mold plate, and the output shaft ends of the lifting cylinders are fixedly connected to the top plate.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. Through the No. 1 injection molding component and the No. 2 injection molding component, two colors of injection liquid can be injected into the No. 1 color molding cavity and the No. 2 color molding cavity respectively, thereby realizing the injection molding of the two-color storage box. The mold opening automatic core pulling component can realize automatic core pulling when the mold is opened, without the need to set up a cylinder, which can effectively reduce the mold cost.

[0018] 2. When the mold is opened, the upward movement of the upper mold plate can drive the driving rod to move upward, and the upward movement of the driving rod can drive the core-pulling slider to move outward, thereby realizing automatic core pulling of the core block. There is no need to set up an oil cylinder, which can effectively reduce the mold cost.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a partial structural diagram of the utility model;

[0022] Figure 3 It is a structural diagram of the lower template;

[0023] Figure 4 It is a structural diagram of the ejection mechanism. DETAILED DESCRIPTION

[0024] like Figures 1-4 As shown, a two-color precision injection mold for a car auxiliary instrument storage box includes an injection plate 1, an upper template 2 and a lower template 3 arranged in sequence from top to bottom, a No. 1 color molding cavity 4 and a No. 2 color molding cavity 5 are arranged between the upper template 2 and the lower template 3, a No. 1 injection molding component 6 connected to the No. 1 color molding cavity 4 and a No. 2 injection molding component 7 connected to the No. 2 color molding cavity 5 are arranged in the injection plate 1, and automatic core pulling components 8 for mold opening are symmetrically arranged on the front and back sides of the No. 1 color molding cavity 4 and the No. 2 color molding cavity 5.

[0025] In the utility model, two colors of injection liquid can be injected into the No. 1 color molding cavity 4 and the No. 2 color molding cavity 5 respectively through the No. 1 injection molding component 6 and the No. 2 injection molding component 7, thereby realizing the injection molding of the two-color storage box. The automatic core pulling component for mold opening can realize automatic core pulling when the mold is opened, without the need to set up an oil cylinder, which can effectively reduce the mold cost.

[0026] Specifically, the automatic core-pulling assembly 8 for mold opening includes a core-pulling slider 9 arranged on the lower mold plate 3 through a sliding limit structure. The inner end of the core-pulling slider 9 is fixedly connected to a core block 10. It also includes a slider driving structure arranged on the upper mold plate 2. The slider driving structure includes a driving rod 11 fixed obliquely to the bottom of the lower mold plate 3. The driving rod 11 is inserted into the core-pulling slider 9 and slides with the core-pulling slider 9. When the mold is opened, the upward movement of the upper mold plate can drive the driving rod to move upward. The upward movement of the driving rod can drive the core-pulling slider to translate outward, thereby realizing automatic core pulling of the core block. No oil cylinder is required, which can effectively reduce the cost of the mold.

[0027] Specifically, the sliding limiting structure includes two limiting pressing plates 12 arranged on both sides of the core-pulling slider 9. The two limiting pressing plates can limit the core-pulling slider.

[0028] Specifically, the No. 1 injection molding assembly 6 includes a No. 1 color injection molding tube 13 vertically arranged in the injection molding plate 1. The bottom of the No. 1 color injection molding tube 13 passes through the upper mold plate 2 and is connected to the No. 1 color molding cavity 4. The injection molding liquid can be injected into the No. 1 color molding cavity through the No. 1 color injection molding tube.

[0029] Specifically, the second injection molding assembly 7 includes a heating plate 14 disposed within the injection molding plate 1. A heating wire 15 is mounted on the heating plate 14. A vertically mounted second-color injection molding tube 16 is fixedly connected to the bottom of the heating plate 14. The bottom of the second-color injection molding tube 16 passes through the upper mold plate 2 and is connected to the second-color molding cavity 5. Molding liquid is injected into the second-color molding cavity through the second-color injection molding tube. The heating wire on the heating plate heats the injection liquid flowing through the heating plate to maintain its temperature.

[0030] Specifically, a base plate 17 is provided on the underside of the lower mold plate 3. An ejection mechanism 18 is disposed between the base plate 17 and the lower mold plate 3. The ejection mechanism 18 comprises a top plate 19 and a lifting assembly capable of driving the top plate 19 to rise and fall vertically. The top plate 19 is provided with two modular ejector pin assemblies connected to the first and second color molding cavities 4 and 5, respectively. The lifting assembly drives the top plate to rise and fall vertically, and upward movement of the top plate enables the modular ejector pin assemblies to eject the product.

[0031] Specifically, the combined ejector assembly includes two inclined ejector pins 20 positioned at an angle and corresponding to the core blocks 10. The bottoms of the inclined ejector pins 20 are rotatably connected to the ejector plate 19 and are tilted away from the core blocks 10. The combined ejector assembly also includes several vertically arranged straight ejector pins 21. When the ejector plate moves upward, the inclined ejector pins can apply an oblique upward thrust to the product, while the straight ejector pins can also apply a vertical upward thrust to the product. The combination of the straight and inclined ejector pins prevents damage to the product during ejection.

[0032] Specifically, the lifting assembly includes four lifting cylinders 22 fixed to the side of the lower template 3, and the output shaft ends of the lifting cylinders 22 are fixedly connected to the top plate 19. The synchronous action of the four lifting cylinders can drive the top plate to rise and fall in the vertical direction.

[0033] The working principle of the utility model is as follows: two colors of injection liquid can be injected into the first color molding cavity 4 and the second color molding cavity 5 respectively through the first injection molding component 6 and the second injection molding component 7, thereby realizing the injection molding of the two-color storage box; the automatic core pulling component of the mold opening can realize automatic core pulling when the mold is opened, without the need to set up an oil cylinder, which can effectively reduce the mold cost;

[0034] When the mold is opened, the upper mold plate moves upward to drive the driving rod to move upward, and the upward movement of the driving rod can drive the core-pulling slider to move outward, thereby realizing automatic core pulling of the core block. No oil cylinder is required, which can effectively reduce the mold cost. The two limit pressure plates can limit the core-pulling slider;

[0035] The injection molding liquid can be injected into the molding cavity of the first color through the injection molding tube of the first color, and the injection molding liquid can be injected into the molding cavity of the second color through the injection molding tube of the second color. The heating wire on the heating plate can heat the injection molding liquid flowing through the heating plate to maintain its temperature;

[0036] The lifting assembly can drive the top plate to rise and fall in the vertical direction. The upward movement of the top plate can eject the product through the combined ejector assembly. When the top plate moves upward, the inclined ejector can apply an oblique upward thrust to the product, and at the same time, the straight ejector can apply a vertical upward thrust to the product. The combination of straight and inclined ejectors can prevent the product from being damaged during ejection. The synchronous action of the four lifting cylinders can drive the top plate to rise and fall in the vertical direction.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A two-color precision injection mold for a car auxiliary instrument storage box, comprising an injection plate (1), an upper mold plate (2) and a lower mold plate (3) arranged in sequence from top to bottom, characterized in that: A first color molding cavity (4) and a second color molding cavity (5) are provided between the upper template (2) and the lower template (3); a first injection molding component (6) connected to the first color molding cavity (4) and a second injection molding component (7) connected to the second color molding cavity (5) are provided in the injection molding plate (1); and mold opening automatic core pulling components (8) are symmetrically provided on the front and rear sides of the first color molding cavity (4) and the second color molding cavity (5).

2. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 1 is characterized in that: The mold opening automatic core pulling assembly (8) includes a core pulling slider (9) arranged on the lower mold plate (3) through a sliding limit structure, the inner end of the core pulling slider (9) is fixedly connected to a core block (10), and also includes a slider driving structure arranged on the upper mold plate (2).

3. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 2 is characterized in that: The slider driving structure includes a driving rod (11) fixed obliquely at the bottom of the lower template (3); the driving rod (11) is inserted into the core-pulling slider (9) and slidably cooperates with the core-pulling slider (9).

4. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 3 is characterized in that: The sliding limiting structure comprises two limiting pressure plates (12) arranged on both sides of the core-pulling slider (9).

5. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 4 is characterized in that: The No. 1 injection molding component (6) includes a No. 1 color injection molding tube (13) vertically arranged in the injection molding plate (1), and the bottom of the No. 1 color injection molding tube (13) passes through the upper mold plate (2) and is connected to the No. 1 color molding cavity (4).

6. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 5 is characterized in that: The second injection molding component (7) includes a heating plate (14) arranged in the injection molding plate (1), and an electric heating wire (15) is arranged on the heating plate (14). The bottom of the heating plate (14) is fixedly connected to a vertically arranged second color injection molding tube (16), and the bottom of the second color injection molding tube (16) passes through the upper template (2) and is connected to the second color molding cavity (5).

7. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 6 is characterized in that: A bottom plate (17) is further provided on the lower side of the lower template (3), and an ejection mechanism (18) is provided between the bottom plate (17) and the lower template (3).

8. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 7 is characterized in that: The ejection mechanism (18) includes a top plate (19) and a lifting assembly capable of driving the top plate (19) to rise and fall in a vertical direction. The top plate (19) is provided with two combined ejector rod assemblies respectively connected to the first color molding cavity (4) and the second color molding cavity (5).

9. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 8 is characterized in that: The combined push rod assembly includes two inclined push rods (20) that are arranged obliquely and corresponding to the core block (10), the bottom of the inclined push rods (20) is rotatably connected to the top plate (19), and the inclined push rods (20) are inclined toward the side away from the core block (10). The combined push rod assembly also includes a plurality of vertically arranged straight push rods (21).

10. The double-color precision injection mold for the automobile auxiliary instrument storage box according to claim 9, characterized in that: The lifting assembly comprises four lifting cylinders (22) fixed to the side of the lower template (3), and the output shaft ends of the lifting cylinders (22) are fixedly connected to the top plate (19).

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