Ejection structure of automobile plastic door plate mold

Abstract

The utility model relates to an ejection structure of an automobile plastic door plate mould, which comprises a movable mould plate, cushion blocks and a movable mould fixing plate, four corners of the top of the movable mould fixing plate are fixedly connected with the cushion blocks, the top of each cushion block is fixedly connected with the movable mould plate, the top of the movable mould plate is provided with a groove for shaping an automobile plastic door plate, and the movable mould plate is fixedly connected with the cushion blocks. The top of the movable mold plate is provided with a lateral sliding block assembly stretching into the profiled groove. The utility model relates to the technical field of injection molds. According to the ejection structure of the automobile plastic door plate mold, through the arranged demolding mechanism, an automobile plastic door plate can be automatically separated from a side sliding block assembly in the demolding process after molding is completed, and then the automobile plastic door plate is ejected and demolded through an ejector pin after being completely separated from the side sliding block assembly; it can be guaranteed that the automobile plastic door panel cannot be damaged in the demolding process, and the production efficiency of the automobile plastic door panel can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an ejection structure for an automotive plastic door panel mold. Background Technology

[0002] Automotive plastic door panels are an important part of automotive interiors. They are mainly located on the inside of the doors and serve decorative, protective, and sound-insulating functions. These door panels are typically made of plastic because plastic is lightweight, low-cost, easy to mold, corrosion-resistant, and insulating, making it ideal for the production of automotive interior parts.

[0003] In the existing technology, due to the special shape of automotive plastic door panels, a large number of side sliders are used to position special surfaces during injection molding. This means that after the automotive plastic door panel is shaped, it is necessary to pull the core before ejection and demolding. Otherwise, the automotive plastic door panel will collide with the side sliders during the ejection and demolding process, resulting in damage to the automotive plastic door panel and affecting the demolding efficiency and production efficiency of the automotive plastic door panel. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an ejection structure for automotive plastic door panel molds, so as to solve the technical problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] An ejection structure for an automotive plastic door panel mold includes a movable template, pads, and a movable mold fixing plate. Pads are fixedly connected to the four top corners of the movable mold fixing plate, and the movable template is fixedly connected to the top of the pads. The top of the movable template has a groove for shaping the automotive plastic door panel, and a side slider assembly extending into the groove is provided on the top of the movable template. A demolding mechanism is provided between the movable template and the movable mold fixing plate.

[0007] Furthermore, the side slider assembly includes a side slider and a mold core. The top of the moving template has a groove and a side slider is slidably connected thereto. The side slider is fixedly connected to the mold core on the side near the groove. The side of the mold core away from the side slider passes through the moving template and extends into the groove.

[0008] Furthermore, the demolding mechanism includes a slide, an ejector pin, and a spring assembly. The slide is located below the moving template. The top of the slide has a round hole and is slidably connected to an ejector pin for demolding. The top of the slide is provided with a spring assembly for clamping the ejector pin.

[0009] Furthermore, the elastic component includes a clamping block, an active connecting rod, a driven connecting rod, and a support spring. The top of the slide table has a track groove communicating with the circular hole. A clamping block for squeezing the ejector pin is slidably disposed in the track groove. An active connecting rod is hinged to the top of the clamping block. A driven connecting rod is slidably sleeved on the top of the active connecting rod, and a support spring is disposed between the active connecting rod and the driven connecting rod. The end of the driven connecting rod away from the active connecting rod is hinged to the bottom of the side slider.

[0010] Furthermore, positioning rods are fixedly connected to the inner wall of the track groove away from the circular hole and the inner wall of the slide groove away from the shaped groove. The clamping block and the side slider are slidably connected to the positioning rods through sliding dampers, wherein the damping force of the sliding damper of the clamping block is greater than the damping force of the sliding damper of the side slider.

[0011] Furthermore, the bottom of the moving template is provided with a slot that communicates with the groove and is slidably connected to the ejector pin. The top of the outer side wall of the ejector pin protrudes to form a limiting part, and the top opening of the slot is provided with an avoidance groove for placing the limiting part.

[0012] In summary, this utility model has at least one of the following beneficial technical effects:

[0013] 1. The ejection structure of the automotive plastic door panel mold, through the set demolding mechanism, can automatically separate the automotive plastic door panel from the side slider assembly during the demolding process after the automotive plastic door panel is shaped. Then, after the automotive plastic door panel is completely separated from the side slider assembly, the ejector pin is used to lift the automotive plastic door panel for demolding. This can ensure that the automotive plastic door panel will not be damaged during the demolding process and can effectively improve the production efficiency of automotive plastic door panels.

[0014] 2. The ejection structure of this automotive plastic door panel mold, through the setting of the elastic component, can push the side slider to pull the core during the upward movement of the slide, and after the core pulling is completed, the ejector pin is connected to the slide, so as to make the operation of the demolding mechanism more stable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the ejection structure of an automotive plastic door panel mold according to the present invention.

[0017] Figure 2This is a schematic diagram of the ejection structure of an automotive plastic door panel mold during demolding, according to the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the ejection structure of an automotive plastic door panel mold according to the present invention.

[0019] Figure 4 This is a schematic diagram of the sliding damper in the ejection structure of an automotive plastic door panel mold according to this utility model.

[0020] Figure 5 This is a schematic diagram of the active and driven connecting rods in the ejection structure of an automotive plastic door panel mold according to this utility model.

[0021] In the diagram, 1. Moving mold plate; 2. Pad block; 3. Moving mold fixing plate; 4. Groove; 5. Side slider assembly; 51. Side slider; 52. Mold core; 6. Demolding mechanism; 61. Slide table; 62. Ejector pin; 63. Elastic assembly; 631. Clamping block; 632. Active connecting rod; 633. Driven connecting rod; 634. Support spring; 7. Slide groove; 8. Round hole; 9. Track groove; 10. Positioning rod; 11. Sliding damper; 12. Slot; 13. Limiting part; 14. Clearance groove. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example:

[0024] Reference Figures 1-5 The present invention discloses an ejection structure for an automotive plastic door panel mold, comprising a movable template 1, pads 2, and a movable mold fixing plate 3. Pads 2 are fixedly connected to the four corners of the top of the movable mold fixing plate 3. The movable template 1 is fixedly connected to the top of the pads 2. The top of the movable template 1 is provided with a groove 4 for shaping the automotive plastic door panel. A side slider assembly 5 extending into the groove 4 is provided on the top of the movable template 1. A demolding mechanism 6 is provided between the movable template 1 and the movable mold fixing plate 3.

[0025] In this embodiment, during use, the moving template 1 and the fixed template are closed, thereby using the molding groove 4 to cool and shape the injected plastic, so that the car plastic door panel is shaped.

[0026] After the car plastic door panel is shaped, it needs to be removed from the mold groove 4, which requires demolding. Therefore, a demolding mechanism 6 is provided. Figure 2As shown, during the demolding of the car plastic door panel, the demolding mechanism 6 is driven upward by the machine. While the demolding mechanism 6 is moving upward, it opens the side slider assembly 5 to unlock the car plastic door panel. After the car plastic door panel is fully unlocked, the demolding mechanism 6 will lift the car plastic door panel, so that the car plastic door panel can be automatically unlocked during the demolding process, which improves the demolding efficiency of the car plastic door panel and ensures that the car plastic door panel will not be damaged during demolding.

[0027] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the side slider assembly 5 includes a side slider 51 and a mold core 52. The top of the moving template 1 is provided with a groove 7 and the side slider 51 is slidably connected thereto. The side slider 51 is fixedly connected to the mold core 52 on the side close to the groove 4. The side of the mold core 52 away from the side slider 51 passes through the moving template 1 and extends into the groove 4.

[0028] In this embodiment, by using the side slider 51 and the mold core 52, the mold core 52 can be used to position the special groove of the car plastic door panel during injection molding, so as to improve the molding effect of the car plastic door panel. The groove 7 can be used for the sliding of the side slider 51, so that the side slider 51 drives the extension and retraction of the mold core 52. During the demolding process of the car plastic door panel, the side slider 51 retracts the mold core 52, so as to avoid the mold core 52 affecting the demolding of the car plastic door panel.

[0029] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the demolding mechanism 6 includes a slide table 61, an ejector pin 62, and an elastic component 63. The slide table 61 is located below the moving template 1. The top of the slide table 61 has a round hole 8 and is slidably connected to the ejector pin 62 for demolding. The top of the slide table 61 is provided with an elastic component 63 for clamping the ejector pin 62.

[0030] In this embodiment, the slide table 61 can slide under the drive of the machine, so that the slide table 61 slides between the moving template 1 and the moving template fixing plate 3, thereby pushing the ejector pin 62 to move and lift the car plastic door panel for demolding.

[0031] However, during the molding of automotive plastic door panels, the ejector pin 62 directly lifts the panel, causing the edges to be damaged by the pressure of the mold core 52. This affects the quality of the automotive plastic door panel and reduces its overall quality. Therefore, observation is necessary. Figure 3It can be observed that a spring component 63 is provided on the top of the slide 61. At the same time, the spring component 63 does not directly contact the ejector pin 62, so that the slide 61 will not move the ejector pin 62 with it during the upward movement. Instead, it will first push the side slider assembly 5 to move, so that the mold core 52 is separated from the car plastic door panel. When the side slider 51 contacts the inner wall of the slide groove 7 and can no longer move, the spring component 63 will gradually approach the ejector pin 62 under pressure and clamp the ejector pin 62. This will cause the subsequent sliding of the slide 61 to move the ejector pin 62 with it and lift the car plastic door panel. This ensures that the ejector pin 62 will lift the car plastic door panel for demolding only after the side slider assembly 5 has finished pulling the core, which can effectively ensure the production quality of the car plastic door panel.

[0032] In a further preferred embodiment of this utility model, such as Figures 3-5 As shown, the elastic component 63 includes a clamping block 631, an active connecting rod 632, a driven connecting rod 633, and a support spring 634. The top of the slide table 61 has a track groove 9 communicating with the circular hole 8. The clamping block 631 for squeezing the ejector pin 62 is slidably disposed in the track groove 9. The active connecting rod 632 is hinged to the top of the clamping block 631. The driven connecting rod 633 is slidably sleeved on the top of the active connecting rod 632, and a support spring 634 is disposed between the active connecting rod 632 and the driven connecting rod 633. The end of the driven connecting rod 633 away from the active connecting rod 632 is hinged to the bottom of the side slider 51.

[0033] In this embodiment, as the slide table 61 moves upward, the distance between the clamping block 631 and the side slider 51 gradually decreases. Therefore, under the push of the active connecting rod 632 and the driven connecting rod 633, the side slider 51 can slide sideways in the slide groove 7, thereby separating the mold core 52 from the automotive plastic door panel, so that the automotive plastic door panel will not come into contact with the mold core 52 and be damaged during subsequent demolding.

[0034] When the side slider 51 contacts the inner wall of the slide groove 7 and can no longer move, the reverse force generated by the squeezing of the active connecting rod 632 and the driven connecting rod 633 when the slide table 61 moves upward will push the clamping block 631 to move laterally inside the track groove 9, so that the clamping block 631 approaches and clamps the ejector pin 62, thereby connecting the ejector pin 62 with the slide table 61, so that when the slide table 61 drives the ejector pin 62 to move, the car plastic door panel can be ejected and demolded.

[0035] As the slide 61 moves upward, the distance between the clamping block 631 and the side slider 51 gradually decreases. When the clamping block 631 contacts the ejector pin 62, it is blocked by the ejector pin 62 and cannot continue to slide. This causes the slide 61 to be unable to move forward under the support of the active connecting rod 632 and the driven connecting rod 633, affecting the demolding of the ejector pin 62. Therefore, observation is necessary. Figure 5It can be observed that allowing the active link 632 and the driven link 633 to slide allows for a change in their support lengths, preventing them from contacting the slide table 61 and affecting the demolding of the automotive plastic door panel. Furthermore, by providing a support spring 634 between the active link 632 and the driven link 633, the elasticity of the support spring 634 can ensure the friction between the clamping block 631 and the ejector pin 62, allowing the slide table 61 to stably move upwards along with the ejector pin 62.

[0036] In a further preferred embodiment of this utility model, such as Figure 3 and Figure 4 As shown, positioning rods 10 are fixedly connected to the inner wall of the track groove 9 away from the circular hole 8 and the inner wall of the slide groove 7 away from the groove 4. The clamping block 631 and the side slider 51 are slidably connected to the positioning rods 10 through sliding dampers 11. The damping force of the sliding damper 11 of the clamping block 631 is greater than the damping force of the sliding damper 11 of the side slider 51.

[0037] In this embodiment, since both the side slider 51 and the clamping block 631 are movable parts, the movement priority of the side slider 51 and the clamping block 631 cannot be controlled during the upward movement of the slide table 61. As a result, when the ejector pin 62 is lifted by the slide table 61, the mold core 52 is not completely separated from the automotive plastic door panel, which affects the demolding quality of the automotive plastic door panel.

[0038] Therefore, observe Figure 3 and Figure 4 It can be observed that positioning rods 10 are provided in both the slide groove 7 and the track groove 9. At the same time, the clamping block 631 and the side slider 51 are connected to the positioning post through a sliding damper 11. The damping force of the sliding damper 11 of the clamping block 631 is greater than the damping force of the sliding damper 11 of the side slider 51. This causes the active connecting rod 632 and the driven connecting rod 633 to push the side slider 51, which has less resistance, to move first when they are squeezed by the slide table 61. The side slider 51 will continue to move until it contacts the slide groove 7 and can no longer move. Then the clamping block 631 will be pushed to move. This is used to control the priority order of movement of the side slider 51 and the clamping block 631. Only after the mold core 52 is completely extracted can the slide table 61 be connected to the ejector pin 62, which can ensure the demolding quality of the automotive plastic door panel.

[0039] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the bottom of the moving template 1 is provided with a slot 12 that communicates with the groove 4 and is slidably connected with the ejector pin 62. The top of the outer side wall of the ejector pin 62 protrudes to form a limiting part 13. The top opening of the slot 12 is provided with a relief groove 14 for placing the limiting part 13.

[0040] In this embodiment, since the ejector pin 62 and the slide table 61 are not directly connected and fixed, after the ejector pin 62 and the slide table 61 are separated, the ejector pin 62 will fall down along the round hole 8, causing a depression in the slot 12 in the molded groove 4, so that the plastic injected into the molded groove enters the depression, affecting the shaping of the car plastic door panel.

[0041] Therefore, observe Figure 3 It can be seen that a limiting part 13 is provided at the top of the ejector pin 62, so that the limiting part 13, which has a larger diameter than the slot 12, cannot enter the slot 12, thus preventing the ejector pin 62 from slipping and affecting the shaping of the car plastic door panel.

[0042] However, the setting of the limiting part 13 will cause the ejector pin 62 to not be able to fully enter the slot 12, making it impossible for the inner wall of the groove 4 to remain flat, which will also affect the shaping of the car plastic door panel. Therefore, an avoidance groove 14 is provided at the top of the slot 12 so that the limiting part 13 can enter the avoidance groove 14 to ensure that the inner wall of the groove 4 is flat and to ensure the shaping quality of the car plastic door panel.

[0043] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An ejection structure of a plastic door panel mold for an automobile, comprising a movable mold plate (1), a shim (2) and a movable mold fixing plate (3), characterized in that, The top four corners of the movable mold fixed plate (3) are fixedly connected with the cushion block (2), the top of the cushion block (2) is fixedly connected with the movable mold plate (1), the top of the movable mold plate (1) is provided with a type groove (4) for shaping the automobile plastic door plate, the top of the movable mold plate (1) is provided with a side slide block assembly (5) extending into the type groove (4), and the movable mold plate (1) and the movable mold fixed plate (3) are provided with a demolding mechanism (6).

2. The ejection structure of a plastic door panel mold for a vehicle according to claim 1, wherein The side slide block assembly (5) comprises a side slide block (51) and a mold core (52), the top of the movable mold plate (1) is provided with a sliding groove (7) and is slidably connected with the side slide block (51), the side of the side slide block (51) close to the type groove (4) is fixedly connected with the mold core (52), and the side of the mold core (52) away from the side slide block (51) penetrates through the movable mold plate (1) and extends into the type groove (4).

3. The ejection structure of a plastic door panel mold for a vehicle according to claim 2, wherein The demolding mechanism (6) comprises a sliding table (61), a ejector pin (62) and an elastic assembly (63), the sliding table (61) is arranged below the movable mold plate (1), the top of the sliding table (61) is provided with a circular hole (8) and is slidably connected with the ejector pin (62) for demolding, and the top of the sliding table (61) is provided with the elastic assembly (63) for clamping the ejector pin (62).

4. The ejection structure of a plastic door panel mold for a vehicle according to claim 3, wherein The elastic assembly (63) comprises a clamping block (631), a driving link (632), a driven link (633) and a supporting spring (634), the top of the sliding table (61) is provided with a track groove (9) in communication with the circular hole (8), the track groove (9) is slidably provided with the clamping block (631) for extruding the ejector pin (62), the top of the clamping block (631) is hingedly connected with the driving link (632), the top of the driving link (632) is slidably sleeved with the driven link (633), and the supporting spring (634) is arranged between the driving link (632) and the driven link (633), and the end of the driven link (633) away from the driving link (632) is hingedly connected with the bottom of the side slide block (51).

5. The ejection structure of a plastic door panel mold for a vehicle according to claim 4, wherein The side wall away from the circular hole (8) of the track groove (9) and the side wall away from the type groove (4) of the sliding groove (7) are fixedly connected with the positioning rod (10), and the clamping block (631) and the side slide block (51) are slidably connected with the positioning rod (10) through the sliding damper (11), wherein the damping force of the sliding damper (11) of the clamping block (631) is greater than that of the sliding damper (11) of the side slide block (51).

6. The ejection structure of a plastic door panel mold for a vehicle according to claim 3, wherein The bottom of the movable mold plate (1) is provided with an insertion groove (12) in communication with the type groove (4) and is slidably connected with the ejector pin (62), the top of the outer side wall of the ejector pin (62) is protruded to form a limiting portion (13), and the top opening of the insertion groove (12) is provided with an avoiding groove (14) for placing the limiting portion (13).

Images