Electric vehicle functional structural part injection mold with outer sliding block core-pulling mechanism

Abstract

The utility model provides an electric vehicle functional structural part injection mold with an outer sliding block core-pulling mechanism, and belongs to the field of injection molds. The injection mold comprises a fixed mold plate and a movable mold plate, the movable mold plate is provided with two molding surfaces, the two molding surfaces are oppositely arranged, an injection molding runner is communicated between the two molding surfaces, the injection molding runner is communicated with an injection molding pipe arranged on the fixed mold plate, each molding surface is provided with a plurality of ejector rods, and the ejector rods are arranged on the two molding surfaces. One end of each forming surface is provided with an outer sliding block, one end, close to the forming surface, of each outer sliding block is provided with an end forming cavity communicated with the forming surface, the outer sliding blocks are in sliding connection with the guide structure, and when the fixed mold plate moves in the direction away from the movable mold plate, the outer sliding blocks move in the direction away from the forming surfaces.

Description

Technical Field

[0001] This utility model belongs to the field of injection molds, and in particular relates to an injection mold for a functional structural component of an electric vehicle with an external slider core-pulling mechanism. Background Technology

[0002] When producing plastic parts using injection molds, if the plastic part is a long, narrow car door sill, there is a protruding vertical plate at the top of the door sill. The vertical plate has inwardly inclined baffles on both sides, and the baffles and the inner walls of the vertical plate have integrally connected horizontal and vertical reinforcing ribs. The horizontal reinforcing ribs prevent the product from being directly ejected upwards for demolding, requiring a side-pulling slider to pull out the horizontal reinforcing ribs. However, the inwardly inclined baffles on both sides interfere with the side-pulling action of the side-pulling slider. Then, using the elasticity of the plastic material, a forced ejection method is used to pull the side-pulling slider out of the baffles on both sides. However, this forced ejection method easily causes deformation of the plastic part, affecting its yield. Existing technology typically uses a core-pulling mechanism built into the moving mold plate for demolding. However, placing it inside the moving mold plate requires the external slider to work in conjunction with the internal structure of the moving mold plate, which is complex and easily damages the plastic part.

[0003] For example, a Chinese patent document discloses a synchronous core-pulling mechanism and mold for inner and outer undercut sliders [patent application number: CN202122225026.4]. It includes an inclined guide post, a moving mold slider, and a reversing slider assembly. The inclined guide post is set on a fixed mold plate. The moving mold slider is set in the groove of the moving mold plate and has a mating part A for molding the undercut of the A side of the product. An inclined hole is provided on the moving mold slider. When the mold is closed, the inclined guide post can be pressed into the inclined hole, and when the mold is opened, it can drive the moving mold slider to move in the X direction, so that the mating part A can be pulled away from the undercut of the A side of the product. The reversing slider assembly is fixedly connected to the moving mold slider. The reversing slider assembly has a mating part B for molding the undercut of the B side of the product, so that when the moving mold slider moves in the X direction, it can drive the mating part B to be pulled away from the undercut of the B side of the product. However, this core-pulling mechanism needs to work synchronously with other components, which is complicated to operate and can easily cause damage to the plastic part. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing an injection mold for functional structural components of electric vehicles with an external slider core-pulling mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An injection mold for a functional structural component of an electric vehicle with an external slider core-pulling mechanism includes a fixed mold plate and a moving mold plate. The moving mold plate has two forming surfaces, which are placed opposite each other and connected by an injection runner. The injection runner is connected to an injection tube provided on the fixed mold plate. Each forming surface has a plurality of ejector pins, and one end of each forming surface has an external slider. The end of the external slider near the forming surface has an end forming cavity that communicates with the forming surface. The external slider is slidably connected to a guide structure. When the fixed mold plate moves away from the moving mold plate, the external slider moves away from the forming surface.

[0007] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the guiding structure includes a support block fixedly connected to a fixed template. The end of the support block away from the fixed template is provided with a guide rod slidably connected to the external slider. The guide rod is inclined. The distance between the end of the guide rod near the fixed template and the molding surface is smaller than the distance between the end of the guide rod away from the fixed template and the molding surface. The moving template is also provided with a structure that restricts the direction of movement.

[0008] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the structure for restricting the direction of movement includes two side limiting blocks fixed on the moving template, and a middle limiting block fixed on the moving template between the two side limiting blocks. The middle limiting block and the two side limiting blocks form two limiting grooves, and the external slider is located in the corresponding limiting groove and is slidably connected to it.

[0009] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, an anti-drop groove is provided on both sides of the bottom of the external slider, and the side limiting block and the middle limiting block extend into the corresponding anti-drop groove and slide in connection with it.

[0010] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the cavity opening of the connecting cavity inside the external slider for sliding connection with the guide rod is provided with an inclined access guide surface.

[0011] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the connection between the support block and the guide rod is provided with abutment.

[0012] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the ejector pin includes two first inclined ejector pins located in the middle part of the molding surface, and a second inclined ejector pin located on the molding surface away from the external slider. The first and second inclined ejector pins are slidably connected to the moving template and connected to the ejection structure.

[0013] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the ejection structure includes an ejection plate located within the moving template. The ejection plate is connected to an external linear actuator, and the first and second inclined ejector rods are respectively rotatably connected to connecting blocks fixed on the ejection plate.

[0014] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, a number of cooling holes are provided inside the moving template.

[0015] In the above-mentioned injection mold for electric vehicle functional structural components with an external slider core-pulling mechanism, the moving template is provided with several connecting rods that are slidably connected to the fixed template.

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

[0017] 1. The outer slider used for molding the plastic part is set on the outside of the molding cavity and on the outside of the moving template. During the demolding process, the movement trajectory and operation steps of the outer slider disengaging from the plastic part are simple. If it is set inside the moving template, the outer slider needs to work in conjunction with the internal structure of the moving template, which is complicated and can easily cause damage to the plastic part.

[0018] 2. Due to the guiding effect of the guide rod, as the guide rod moves away from the moving template, it will push the outer slider to move away from the molding surface, thereby disengaging from the plastic part. In addition, the structure that restricts the direction of movement can restrict the direction of movement of the outer slider and prevent damage to the plastic part caused by the deviation of the direction of movement of the outer slider.

[0019] 3. By extending the edge limiting block and the middle limiting block into the corresponding anti-drop groove, the starting position of the outer slider can be specified to prevent it from falling out of the template. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure;

[0021] Figure 2 This is a structural diagram after the template is hidden.

[0022] Figure 3 yes Figure 2 Schematic diagram of the structure of the inner and outer sliders;

[0023] Figure 4 yes Figure 3 An explosion diagram;

[0024] Figure 5 yes Figure 2 A schematic diagram of the structure of the top-mounted plate.

[0025] In the figure: Fixed template 10, Moving template 11, Molding surface 12, Injection runner 13, Injection tube 14, Outer slider 15, End molding cavity 16, Guide structure 17, Support block 18, Guide rod 19, Structure for restricting movement direction 20, Side limiting block 21, Middle limiting block 22, Limiting groove 23, Anti-drop groove 24, Access guide surface 25, First inclined ejector rod 26, Second inclined ejector rod 27, Ejector plate 28, Connecting block 29, Cooling hole 30, Connecting rod 31, Abutment surface 32. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] This utility model provides an injection mold for functional structural parts of electric vehicles with an external slider core-pulling mechanism, combined with... Figure 1-5 As shown, it includes a fixed template 10 and a movable template 11. The movable template 11 has two molding surfaces 12, which are placed opposite each other and connected by an injection flow channel 13. The injection flow channel 13 is connected to an injection tube 14 provided on the fixed template 10. Each molding surface 12 has a plurality of push rods, and one end of each molding surface 12 is provided with an outer slider 15. The end of the outer slider 15 near the molding surface 12 is provided with an end molding cavity 16 that communicates with the molding surface 12. The outer slider 15 is slidably connected to a guide structure 17. When the fixed template 10 moves away from the movable template 11, the outer slider 15 moves away from the molding surface 12.

[0028] In this embodiment, during the injection molding process, the injection molding liquid flows into the two molding surfaces 12 and the end molding cavity 16 through the injection pipe 14 and the injection flow channel 13 for injection molding. After cooling, the moving mold plate 11 and the fixed mold plate 10 separate. During the separation process, the outer slider 15 moves away from the molding surface 12 under the action of the guide structure 17, thereby causing the outer slider 15 to disengage from the plastic part. Then, the plastic part is ejected by the ejector rod.

[0029] The guide structure 17 includes a support block 18 fixedly connected to the fixed template 10. The end of the support block 18 away from the fixed template 10 is provided with a guide rod 19 slidably connected to the outer slider 15. The guide rod 19 is inclined. The distance between the end of the guide rod 19 near the fixed template 10 and the forming surface 12 is smaller than the distance between the end of the guide rod 19 away from the fixed template 10 and the forming surface 12. The moving template 11 is also provided with a structure 20 for restricting the direction of movement.

[0030] In this embodiment, since the support block 18 is fixed on the fixed template 10, when the fixed template 10 is separated from the moving template 11, the support block 18 moves with the guide rod 19 away from the moving template 11. Due to the guiding effect of the guide rod 19, the guide rod 19 will push the outer slider 15 away from the molding surface 12 during the process of moving away from the moving template 11, thereby disengaging from the plastic part. In addition, the movement direction restriction structure 20 can restrict the movement direction of the outer slider 15 and prevent damage to the plastic part caused by the deviation of the movement direction of the outer slider 15.

[0031] The restricted movement direction structure 20 includes two side restriction blocks 21 fixed on the moving template 11, and an intermediate restriction block 22 fixed on the moving template 11 between the two side restriction blocks 21. The intermediate restriction block 22 and the two side restriction blocks 21 form two limiting grooves 23. The outer slider 15 is located in the corresponding limiting groove 23 and is slidably connected to it.

[0032] In this embodiment, during the movement of the outer slider 15, the movement direction of the outer slider 15 is restricted by the abutment of the side limiting block 21 and the middle limiting block 22.

[0033] The outer slider 15 has an anti-drop groove 24 on each of its bottom sides. The side limiting block 21 and the middle limiting block 22 extend into the corresponding anti-drop groove 24 and slide to be connected with it.

[0034] In this embodiment, by extending the edge limiting block 21 and the middle limiting block 22 into the corresponding anti-drop groove 24, the starting position of the outer slider 15 can be specified to prevent it from falling out of the template 11.

[0035] The outer slider 15 has an inclined access guide surface 25 at the opening of the connecting cavity for sliding connection with the guide rod 19.

[0036] In this embodiment, during mold closing, the guide rod 19 can first contact the access guide surface 25, and under the inclined guiding action of the access guide surface 25, it can smoothly slide into the outer slider 15, so that the mold closing is smooth.

[0037] The connection between the support block 18 and the guide rod 19 is provided with an abutment surface 32.

[0038] In this embodiment, after the mold is closed, the guide rod 19 is supported and abutted against the support block 19 by the abutment surface 32.

[0039] The push rod includes two first inclined push rods 26 located in the middle part of the two forming surfaces 12, and a second inclined push rod 27 located on the forming surface 12 away from the outer slider 15. The first inclined push rods 26 and the second inclined push rod 27 are slidably connected to the moving template 11 and connected to the ejection structure.

[0040] The ejection structure includes an ejection plate 28 located within the moving template 11. The ejection plate 28 is connected to an external linear actuator. The first inclined ejector rod 26 and the second inclined ejector rod 27 are respectively rotatably connected to connecting blocks 29 fixed on the ejection plate 28.

[0041] The moving template 11 is provided with a number of cooling holes 30.

[0042] In this embodiment, a coolant pipe is passed through the cooling hole 30, which enables the plastic part to be cooled and molded quickly.

[0043] The moving template 11 is provided with a plurality of connecting rods 31 that are slidably connected to the fixed template 10.

[0044] The working principle of this utility model is as follows: During the injection molding process, the injection liquid flows into the two molding surfaces 12 and the end molding cavity 16 through the injection pipe 14 and the injection flow channel 13 for injection molding. After cooling, the moving mold plate 11 and the fixed mold plate 10 separate. During the separation process, the support block 18 moves away from the moving mold plate 11 with the guide rod 19. Due to the guiding effect of the guide rod 19, the guide rod 19 will push the outer slider 15 to move away from the molding surface 12 as it moves away from the moving mold plate 11, thereby disengaging from the plastic part. Then, the external linear actuator works to make the ejector plate 28 push upward with the first inclined ejector rod 26 and the second inclined ejector rod 27, thereby completing the demolding of the plastic part.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0046] Although this article frequently uses terms such as fixed template 10, moving template 11, molding surface 12, injection runner 13, injection tube 14, outer slider 15, end molding cavity 16, guide structure 17, support block 18, guide rod 19, movement direction restriction structure 20, edge restriction block 21, middle restriction block 22, limiting groove 23, anti-drop groove 24, access guide surface 25, first inclined ejector rod 26, second inclined ejector rod 27, ejection plate 28, connecting block 29, cooling hole 30, connecting rod 31, and abutment surface 32, these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An injection mold for a functional structural part of an electric vehicle with an external slider core-pulling mechanism, comprising a fixed mold plate (10) and a movable mold plate (11), characterized in that, The moving die plate (11) is provided with two forming surfaces (12), the two forming surfaces (12) are oppositely arranged, and an injection flow channel (13) is communicated between the two forming surfaces (12), the injection flow channel (13) is communicated with an injection pipe (14) arranged on the fixed die plate (10), each forming surface (12) is provided with a plurality of ejector rods, one end of each forming surface (12) is provided with an outer sliding block (15), the end of the outer sliding block (15) close to the forming surface (12) is provided with an end forming cavity (16) communicated with the forming surface (12), and the outer sliding block (15) is slidably connected with a guide structure (17).

2. The injection mold for a functional structural part of an electric vehicle having an outer slider core-pulling mechanism according to claim 1, characterized in that, The guide structure (17) comprises a support block (18) fixedly connected with the fixed die plate (10), one end of the support block (18) away from the fixed die plate (10) is provided with a guide rod (19) slidably connected with the outer sliding block (15), the guide rod (19) is inclined, the distance between the end of the guide rod (19) close to the fixed die plate (10) and the forming surface (12) is smaller than the distance between the end of the guide rod (19) away from the fixed die plate (10) and the forming surface (12), and the moving die plate (11) is further provided with a movement direction limiting structure (20).

3. The injection mold for a functional structural part of an electric vehicle having an outer slide core mechanism according to claim 2, characterized in that, The movement direction limiting structure (20) comprises two edge limiting blocks (21) fixed on the moving die plate (11), and a middle limiting block (22) fixed on the moving die plate (11) is arranged between the two edge limiting blocks (21), the middle limiting block (22) and the two edge limiting blocks (21) form two limiting sliding grooves (23), and the outer sliding block (15) is located in the corresponding limiting sliding groove (23) and is slidably connected with the limiting sliding groove (23).

4. The injection mold for a functional structural part of an electric vehicle having an outer slide core mechanism according to claim 3, characterized in that, The bottom of the outer sliding block (15) is provided with a anti-falling groove (24) on each side, and the edge limiting block (21) and the middle limiting block (22) extend into the corresponding anti-falling groove (24) and are slidably connected with the anti-falling groove (24).

5. The injection mold for a functional structural part of an electric vehicle having an outer slider core pulling mechanism according to claim 3, wherein, The cavity opening of the connecting cavity for slidably connecting with the guide rod (19) in the outer sliding block (15) is provided with an inclined access guide surface (25).

6. The injection mold for a functional structural part of an electric vehicle having an outer slider core pulling mechanism according to claim 3, wherein, The connecting position of the support block (18) and the guide rod (19) is provided with an abutting surface (32).

7. The injection mold for a functional structural part of an electric vehicle having an outer slider core pulling mechanism according to claim 1, wherein, The ejector rod comprises two first inclined ejector rods (26) arranged at the middle part of the forming surface (12), and a second inclined ejector rod (27) arranged away from the outer sliding block (15), the first inclined ejector rod (26) and the second inclined ejector rod (27) are slidably connected with the moving die plate (11) and are connected with an ejection structure.

8. The injection mold for a functional structural part of an electric vehicle having an outer slide core mechanism according to claim 7, characterized in that, The ejection structure comprises an ejection plate (28) arranged in the moving die plate (11), the ejection plate (28) is connected with an external linear driver, and the first inclined ejector rod (26) and the second inclined ejector rod (27) are respectively rotatably connected with a connecting block (29) fixed on the ejection plate (28).

9. The injection mold for a functional structural part of an electric vehicle having an outer slider core pulling mechanism according to claim 1, wherein, A plurality of cooling holes (30) are arranged in the moving die plate (11).

10. The injection mold for a functional structural piece of an electric vehicle having an outer slider core pulling mechanism according to claim 1, wherein, The movable die plate (11) is provided with a plurality of connecting rods (31) in sliding connection with the fixed die plate (10).

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