Foaming and injection molding integrated mold for automotive upholstery
By designing a foam injection molding integrated mold of automobile interior parts including lifting cover and expansion pressure plate, the problems of many traditional processes and low efficiency are solved, and efficient integrated production of injection molding and foaming is achieved, and the edge formation is automatically formed.
Patent Information
- Application Number
- CN202510237401.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-05-16
AI Technical Summary
There are many steps to realize surface softening and surface texture of traditional automotive interior parts, resulting in low production efficiency and high cost, and the need to turn over products between different processes, increasing operating costs.
Design a foam injection molding integrated mold for automotive interior parts, including upper template, lower template, lifting cover and expansion pressure plate. After closing the mold, plastic and foaming raw materials are injected into the molding cavity, and the lifting cover and expansion pressure plate are used to achieve injection molding and foaming at the same time.
The injection molding and foaming process are completed in the same mold, reducing process transfer, improving production efficiency, reducing costs, and automatically forming the edge wrapping of foamed materials.
Smart Images
Figure CN120002929A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of mold manufacturing and relates to an integrated foaming and injection molding mold for automobile interior decoration parts. Background Art
[0002] Many automotive interior parts are made of a mixed material with a plastic inner layer and a sponge outer layer, such as armrest covers and car seat accessories. The surface softening and surface texture of traditional automotive interior parts are achieved by gluing a foam coating layer on the surface of the plastic hard skeleton to form a plastic coating. This process has many steps, from injection molding to foam coating, it needs to be transferred to different workshops, and the cleaning process of the foam coating surface needs to be added, which consumes a lot of manpower and material resources. The many steps increase the use of mechanical equipment, occupy more production space, greatly increase the operating costs of the enterprise, and are not conducive to the long-term development of the enterprise. For this reason, there is an urgent need for a mold that can realize the two processes of injection molding and foam molding in the mold. Summary of the invention
[0003] The purpose of the present invention is to solve the above problems in the existing technology and propose an integrated foam injection mold for automotive interior decoration parts, which not only saves mold costs, but also greatly improves production efficiency and does not require the product to be circulated between two processes.
[0004] The purpose of the present invention can be achieved through the following technical solutions: a foam injection integrated mold for automobile interior decoration parts, comprising an upper template, a lower template, a lifting cover and an expansion pressure plate, characterized in that an active cavity and an upper mold cavity are opened in the upper template, and a lower mold cavity is opened on the lower template, the upper mold cavity and the lower mold cavity form a molding cavity after the mold is closed, the active cavity is located above the upper mold cavity and is connected to the upper mold cavity through a plurality of vertical holes, the lifting cover includes a vertical enclosure, a top plate with a center hole, and a plurality of connecting columns uniformly distributed at the lower end of the top plate with the center of the center hole as the center of the circle, the vertical enclosure is vertically fixed to the outer edge of the top plate, the top plate is located in the active cavity, and the lower end of the vertical enclosure passes through the active cavity and the upper mold cavity downward, the expansion pressure plate is located in the upper mold cavity and the upper end surface is fixed with a mounting plate by bolts, the lower end of the connecting column is fixed to the mounting plate or the expansion pressure plate, the lower template is provided with an adjusting component for pushing the lifting cover to rise, and the upper template is also provided with a limiting component for preventing the lifting cover from continuing to rise.
[0005] After the upper and lower molds are closed, plastic raw materials are injected into the molding cavity. After filling, wait for the plastic raw materials to be shaped, and then drive the lifting cover through the adjustment component. The lifting cover drives the expansion plate to rise, so that the molding cavity space becomes larger, and then the foaming raw material is injected into the enlarged space in the molding cavity. After the foaming is shaped, the mold is opened to obtain the automotive interior parts of the mixed material.
[0006] Furthermore, the adjustment component includes a lifting enclosure, a lifting column, a discharge plate and an upper cylinder. Two vertical plates are fixed to the lower end of the lower template, and a bottom plate is fixed to the lower end of the vertical plate. A center hole is opened on the bottom plate for the telescopic rod of the upper cylinder to pass through. The discharge plate is located between the two vertical plates. The lower template is provided with an embedding groove for the lifting enclosure to be embedded. A plurality of through holes are opened at the bottom of the embedding groove for the lifting column to pass through. The upper end of the lifting column is fixed to the lower end of the lifting enclosure, and the upper end of the lifting enclosure is abutted against the lower end of the vertical enclosure after the mold is closed.
[0007] Start the upper cylinder, the telescopic rod passes through the bottom plate and pushes the unloading plate up, and the unloading plate drives the lifting column and the lifting enclosure to move upward. Since the lifting enclosure is in contact with the vertical enclosure, the lifting cover is pushed up, and the lifting cover moves synchronously with the expansion pressure plate. Therefore, the expansion pressure plate moves up and separates from the molded injection molded part, and a foaming cavity is formed in the gap between the injection molded part and the expansion pressure plate.
[0008] Furthermore, a spring groove is formed at the lower end of the lifting column, a first spring is arranged in the spring groove, an upper end of the first spring abuts against the bottom of the spring groove, and a lower end of the first spring abuts against the unloading plate.
[0009] Under the action of the first spring, the lifting enclosure plate and the lifting outer cover are firmly pressed against each other.
[0010] Furthermore, a ejector rod is provided in the lower mold cavity of the lower mold plate, the lower end of the ejector rod passes through the lower mold plate and is connected to a support block, a discharge spring is sleeved on the ejector rod, and the upper end of the ejector rod has a horizontally extended stop edge that can abut against the bottom of the lower mold cavity.
[0011] Under the action of the unloading spring, the ejector rod is firmly against the bottom of the lower mold cavity. When the unloading plate moves up, it can push the support block upward to squeeze the unloading spring, thereby raising the ejector rod and ejecting the automotive interior product out of the lower mold cavity. The unloading is completed and workers or mechanical claws can easily take it out.
[0012] Furthermore, the limit assembly includes a side top cylinder, a limit slider and a limit bolt. The limit slider is fixed to the front end of the telescopic rod of the side top cylinder. The side top cylinder is fixed to the outer side of the upper template. The telescopic rod of the side top cylinder is laterally inserted into the movable cavity. The limit slider can press the lifting outer cover firmly to the bottom of the movable cavity, and when the lifting outer cover rises, it can abut against the lower end of the limit bolt.
[0013] The side top cylinder drives the limit slider to move forward, and the limit slider firmly presses the lifting cover to the bottom of the active cavity. Then the expansion plate is fixed at a certain height and will not move up due to the extrusion of the plastic raw materials during injection molding, thereby improving the precision of injection molding. When the limit slider returns to its original position, it will not hinder the lifting cover from rising. The lifting cover rises until it abuts against the lower end of the limit bolt. According to the thickness requirements of the foam, the limit bolt can be appropriately turned to adjust its height position.
[0014] Furthermore, a second spring is sleeved on the limiting bolt, the upper end of the second spring abuts against the top wall of the movable cavity, and the lower end of the second spring abuts against the top plate of the lifting outer cover.
[0015] Under the action of the second spring, the top plate of the lifting cover is automatically attached to the bottom of the movable cavity, so that the limit slider can be smoothly pushed forward when it starts to move, and the limit slider is prevented from hitting the edge of the lifting cover.
[0016] Furthermore, a first needle valve type hot runner and a second needle valve type hot runner are slidably provided in the upper mold plate, and outlets of the first needle valve type hot runner and the second needle valve type hot runner are both located on the expansion pressure plate, and the first needle valve type hot runner and the second needle valve type hot runner are fixed to the mounting plate and rise and fall synchronously with the expansion pressure plate.
[0017] The first needle valve type hot runner is used to inject plastic raw materials, and the second needle valve type hot runner is used to inject foaming raw materials. When the first needle valve type hot runner is injecting plastic raw materials and molding, the second needle valve type hot runner is in a closed state. When the second needle valve type hot runner is injecting foaming raw materials and foaming, the first needle valve type hot runner is in a closed state, which can prevent different materials from mixing into the needle valve type hot runner.
[0018] Furthermore, a clearance groove is provided on the outer side of the movable cavity, and the limit slider can be embedded in the clearance groove when retreating. The clearance groove is used to accommodate the limit slider to prevent the lifting cover from hitting the limit slider and stopping when moving.
[0019] Furthermore, the front end of the limit slider has an inclined push surface, and when the limit slider moves forward, the upper end of the limit slider abuts against the top wall of the active cavity, and the lower end of the limit slider abuts against the top plate of the lifting cover. The limit slider is provided with an inclined push surface, which facilitates downward squeezing of the lifting cover without collision when the limit slider moves forward.
[0020] Furthermore, a rimming groove is provided on the inner side of the lower end of the vertical enclosure, and the rimming groove can be connected with the molding cavity after the lifting cover is raised. During injection molding, the rimming groove is blocked by the side wall of the embedded groove of the lower template and will not be connected with the molding cavity; during foaming, since the lifting cover is lifted, the rimming groove will be connected with the molding cavity, and the foaming material will enter the rimming groove during foaming, and a circle of foaming material rimming will be formed on the upper surface and outer edge of the injection molded part after molding.
[0021] Compared with the prior art, the foaming and injection molding integrated mold for automobile interior decoration parts has the following advantages:
[0022] 1. The two processes of injection molding and foaming can be completed in the same mold, and only one mold closing and mold opening is required, the processing time is short, and there is no need to transfer the injection molded parts to the foaming station, which greatly improves production efficiency.
[0023] 2. The lifting cover and the lifting rod are driven by the lifting cylinder, and the telescopic rod of the lifting flagpole can complete all actions in one stroke.
[0024] 3. By rationally designing the height and size of the edge molding groove, the edge of the foam material is automatically formed to wrap around the injection molded part. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a cross-sectional view of the foam injection molding integrated mold for automobile interior parts during injection molding.
[0026] Figure 2 It is a cross-sectional view of the foaming injection molding integrated mold of the automobile interior decoration part during foaming.
[0027] Figure 3 It is a structural schematic diagram of the lifting cover of the first embodiment.
[0028] Figure 4 It is a structural schematic diagram of the lifting enclosure of the first embodiment.
[0029] Figure 5 It is a structural schematic diagram of the lifting cover of the second embodiment.
[0030] In the figure, 1, upper template; 101, movable cavity; 102, upper mold cavity; 103, give way groove; 2, lower template; 3, lifting cover; 31, vertical enclosure; 32, top plate; 33, center hole; 34, connecting column; 35, edge forming groove; 4, expansion pressure plate; 5, mounting plate; 6, lifting enclosure; 7, lifting column; 8, unloading plate; 9, upper cylinder; 10, vertical plate; 11, bottom plate; 12, first spring; 13, ejector rod; 14, support block; 15, unloading spring; 16, stop edge; 17, side cylinder; 18, limit slider; 19, limit bolt; 20, second spring; 21, first needle valve hot runner; 22, second needle valve hot runner. DETAILED DESCRIPTION
[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0032] Embodiment 1
[0033] like Figure 1 , Figure 2 As shown, the foam injection mold of the automotive interior parts includes an upper mold plate 1, a lower mold plate 2, a lifting cover 3 and an expansion plate 4. The upper mold plate 1 has an active cavity 101 and an upper mold cavity 102, and the lower mold plate 2 has a lower mold cavity. The upper mold cavity 102 and the lower mold cavity form a molding cavity after the mold is closed. The active cavity 101 is located above the upper mold cavity 102 and is connected to the upper mold cavity 102 through a number of vertical holes. Figure 3As shown, the lifting cover 3 includes a vertical enclosure 31, a top plate 32 with a center hole 33, and a plurality of connecting columns 34 uniformly distributed at the lower end of the top plate 32 with the center of the center hole 33 as the center of the circle. The vertical enclosure 31 is vertically fixed to the outer edge of the top plate 32, the top plate 32 is located in the active cavity 101, and the lower end of the vertical enclosure 31 downwardly passes through the active cavity 101 and the upper mold cavity 102. The expansion pressure plate 4 is located in the upper mold cavity 102 and the upper end surface is fixed with a mounting plate 5 by bolts. The lower end of the connecting column 34 is fixed to the mounting plate 5 or the expansion pressure plate 4. The lower mold plate 2 is provided with an adjusting component for pushing the lifting cover 3 to rise, and the upper mold plate 1 is also provided with a limit component for preventing the lifting cover 3 from continuing to rise.
[0034] After the upper mold 1 and the lower mold 2 are closed, the plastic raw material is injected into the molding cavity. After it is filled, wait for the plastic raw material to be shaped. Then, the lifting cover 3 is driven by the adjustment component. The lifting cover 3 drives the expansion plate 4 to rise, so that the molding cavity space becomes larger. Then, the foaming raw material is injected into the enlarged space in the molding cavity. After the foaming is shaped, the mold is opened to obtain the automotive interior parts made of mixed materials.
[0035] like Figure 4 As shown, the adjustment assembly includes a lifting enclosure 6, a lifting column 7, a discharge plate 8 and an upper cylinder 9. Two vertical plates 10 are fixed to the lower end of the lower template 2. A bottom plate 11 is fixed to the lower end of the vertical plate 10. A center hole 33 is opened on the bottom plate 11 for the telescopic rod of the upper cylinder 9 to pass through. The discharge plate 8 is located between the two vertical plates 10. The lower template 2 is provided with an embedding groove for the lifting enclosure 6 to be embedded. A plurality of through holes are opened at the bottom of the embedding groove for the lifting column 7 to pass through. The upper end of the lifting column 7 is fixed to the lower end of the lifting enclosure 6. The upper end of the lifting enclosure 6 is abutted against the lower end of the vertical enclosure 31 after the mold is closed.
[0036] Start the upper cylinder 9, the telescopic rod passes through the bottom plate 11 and pushes the unloading plate 8 to move upward. The unloading plate 8 drives the lifting column 7 and the lifting enclosure 6 to move upward together. Since the lifting enclosure 6 is in contact with the vertical enclosure 31, the lifting cover 3 is pushed up. The lifting cover 3 moves synchronously with the expansion pressure plate 4. Therefore, the expansion pressure plate 4 moves upward and separates from the molded injection molded part. A foaming cavity is formed in the gap between the injection molded part and the expansion pressure plate 4.
[0037] A spring slot is provided at the lower end of the lifting column 7, in which a first spring 12 is arranged, the upper end of the first spring 12 abuts against the bottom of the spring slot, and the lower end of the first spring 12 abuts against the unloading plate 8. Under the action of the first spring 12, the lifting enclosure 6 and the lifting cover 3 are firmly abutted together.
[0038] A ejector rod 13 is also provided in the lower mold cavity of the lower mold plate 2. The lower end of the ejector rod 13 passes through the lower mold plate 2 and is connected to a support block 14. A discharge spring 15 is sleeved on the ejector rod 13. The upper end of the ejector rod 13 has a horizontally extended stop edge 16 that can abut against the bottom of the lower mold cavity.
[0039] Under the action of the unloading spring 15, the ejector rod 13 is firmly against the bottom of the lower mold cavity. When the unloading plate 8 moves up, the support block 14 can be pushed up to squeeze the unloading spring 15, so that the ejector rod 13 rises and the automotive interior product is ejected from the lower mold cavity, completing the unloading, and workers or mechanical claws can easily take it out.
[0040] The limiting assembly includes a side top cylinder 17, a limiting slider 18 and a limiting bolt 19. The limiting slider 18 is fixed to the front end of the telescopic rod of the side top cylinder 17. The side top cylinder 17 is fixed to the outer side of the upper template 1. The telescopic rod of the side top cylinder 17 is laterally inserted into the movable cavity 101. The limiting slider 18 can firmly press the lifting cover 3 at the bottom of the movable cavity 101, and when the lifting cover 3 rises, it can abut against the lower end of the limiting bolt 19.
[0041] The side top cylinder 17 drives the limit slider 18 to move forward, and the limit slider 18 firmly presses the lifting cover 3 to the bottom of the active chamber 101. Then, the expansion plate 4 is fixed at a certain height and will not move up due to the extrusion of the plastic raw material during injection molding, thereby improving the precision of injection molding. When the limit slider 18 returns to its original position, it will not hinder the lifting cover 3 from rising. The lifting cover 3 rises until it abuts against the lower end of the limit bolt 19. According to the thickness requirements of the foam, the limit bolt 19 can be appropriately rotated to adjust its height position.
[0042] The second spring 20 is sleeved on the limit bolt 19, the upper end of the second spring 20 abuts against the top wall of the movable cavity 101, and the lower end of the second spring 20 abuts against the top plate 32 of the lifting cover 3. Under the action of the second spring 20, the top plate 32 of the lifting cover 3 automatically fits on the bottom of the movable cavity 101, so that the limit slider 18 can be smoothly pushed forward when it starts to move, and the limit slider 18 is prevented from hitting the edge of the lifting cover 3.
[0043] A first needle valve type hot runner 21 and a second needle valve type hot runner 22 are also slidably provided in the upper mold plate 1. The outlets of the first needle valve type hot runner 21 and the second needle valve type hot runner 22 are both located on the expansion pressure plate 4. The first needle valve type hot runner 21 and the second needle valve type hot runner 22 are fixed to the mounting plate 5 and rise and fall synchronously with the expansion pressure plate 4.
[0044] The first needle valve type hot runner 21 is used to inject plastic raw materials, and the second needle valve type hot runner 22 is used to inject foaming raw materials. When the first needle valve type hot runner 21 is injecting plastic raw materials and molding, the second needle valve type hot runner 22 is in a closed state. When the second needle valve type hot runner 22 is injecting foaming raw materials and foaming, the first needle valve type hot runner 21 is in a closed state, which can prevent different materials from mixing into the needle valve type hot runner.
[0045] The outer side of the active cavity 101 is provided with a clearance groove 103, into which the limit slider 18 can be inserted when retreating. The clearance groove 103 is used to accommodate the limit slider 18 to prevent the lifting cover 3 from hitting the limit slider 18 and stopping when moving.
[0046] The front end of the limit slider 18 has an inclined push surface. When the limit slider 18 moves forward, the upper end of the limit slider 18 abuts against the top wall of the active cavity 101, and the lower end of the limit slider 18 abuts against the top plate 32 of the lifting cover 3. The limit slider 18 is provided with an inclined push surface, which facilitates the downward pressing of the lifting cover 3 without collision when the limit slider 18 moves forward.
[0047] The lower end of the vertical enclosure 31 is provided with an edge-wrapping molding groove 35, which can be connected to the molding cavity after the lifting cover 3 is raised. During injection molding, the edge-wrapping molding groove 35 is blocked by the side wall of the embedded groove of the lower template 2 and will not be connected to the molding cavity; during foaming, since the lifting cover 3 is lifted, the edge-wrapping molding groove 35 will be connected to the molding cavity, and the foaming material will enter the edge-wrapping molding groove 35 during foaming, and a circle of foaming material will be formed on the upper surface and outer edge of the injection molded part after molding.
[0048] Specific steps: before closing the mold, first start the side push cylinder 17, drive the limit slider 18 to press the top plate 32 to the bottom of the active cavity 101, and then start the injection molding machine to drive the upper template 1 and the lower template 2 to close the mold, the vertical enclosure 31 and the lifting enclosure 6 are abutted, and a closed molding cavity is formed between the vertical enclosure 31, the expansion pressure plate 4, and the lower template 2. The plastic raw material is injected through the first needle valve hot runner 21, and the plastic raw material enters the molding cavity. After the molding is finalized, the upper cylinder 9 is started, and the unloading plate 8 moves upward, pushing the lifting column 7, the lifting enclosure 6, and the lifting outer cover 3 to move upward together. After moving up a distance until the top plate 32 abuts against the lower end of the limit bolt 19, the expansion pressure plate 4 is also separated from the injection molded part as it moves upward, and a foaming cavity is formed between the expansion pressure plate 4 and the injection molded part. At this time, the edge forming groove 35 is connected with the foaming cavity, and the foaming material is injected through the second needle valve hot runner 22. The foaming material fills the molding cavity and the edge forming groove 35. After the foaming material is finalized, the mold is opened, the upper mold plate 1 is separated from the lower mold plate 2, and the injection molded part with the foaming layer is embedded in the lower mold cavity. The upper cylinder 9 is started again, and the unloading plate 8 is continued to be driven to move upward, pushing the ejector rod 13 to move upward, and the injection molded part is pushed out of the lower mold cavity. The worker can take out the automotive interior product.
[0049] Embodiment 2
[0050] The lifting cover 3 and the lifting panel 6 of the first embodiment are square. Figure 5 The lifting cover 3 of the second embodiment shown is circular, but it can also be in other shapes. The shapes of the lifting cover 3 and the lifting enclosure 6 can be set according to product requirements.
[0051] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A foaming injection molding integrated mold for automobile interior decoration parts, comprising an upper mold plate (1), a lower mold plate (2), a lifting cover (3) and an expansion pressure plate (4), characterized in that: The upper mold plate (1) has an active cavity (101) and an upper mold cavity (102), the lower mold plate (2) has a lower mold cavity, the upper mold cavity (102) and the lower mold cavity form a molding cavity after the mold is closed, the active cavity (101) is located above the upper mold cavity (102) and is connected to the upper mold cavity (102) through a plurality of vertical holes, the lifting cover (3) includes a vertical enclosure plate (31), a top plate (32) with a center hole (33), and a plurality of connecting columns (34) uniformly distributed on the lower end of the top plate (32) with the center of the center hole (33) as the center of the circle, the vertical enclosure plate (31) ) is vertically fixed to the outer edge of the top plate (32), the top plate (32) is located in the movable cavity (101), the lower end of the vertical enclosure (31) passes downward through the movable cavity (101) and the upper mold cavity (102), the expansion pressure plate (4) is located in the upper mold cavity (102) and the upper end surface is fixed with a mounting plate (5) by bolts, the lower end of the connecting column (34) is fixed to the mounting plate (5) or the expansion pressure plate (4), the lower mold plate (2) is provided with an adjustment component for pushing the lifting cover (3) to rise, and the upper mold plate (1) is also provided with a limit component for preventing the lifting cover (3) from continuing to rise.
2. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 1, characterized in that: The adjustment assembly comprises a lifting panel (6), a lifting column (7), a discharge plate (8) and an upper cylinder (9); two vertical plates (10) are fixed to the lower end of the lower template (2); a bottom plate (11) is fixed to the lower end of the vertical plate (10); a central hole (33) is provided on the bottom plate (11) for the telescopic rod of the upper cylinder (9) to pass through; the discharge plate (8) is located between the two vertical plates (10); a groove is provided on the lower template (2) for the lifting panel (6) to be embedded; a plurality of through holes are provided at the bottom of the groove for the lifting column (7) to pass through; the upper end of the lifting column (7) is fixed to the lower end of the lifting panel (6); and the upper end of the lifting panel (6) abuts against the lower end of the vertical panel (31) after the mold is closed.
3. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 2, characterized in that: The lower end of the lifting column (7) is provided with a spring groove, in which a first spring (12) is arranged, the upper end of the first spring (12) abuts against the bottom of the spring groove, and the lower end of the first spring (12) abuts against the unloading plate (8).
4. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 3, characterized in that: A ejector rod (13) is also provided in the lower mold cavity of the lower mold plate (2). The lower end of the ejector rod (13) passes through the lower mold plate (2) and is connected to a support block (14). A discharge spring (15) is sleeved on the ejector rod (13). The upper end of the ejector rod (13) has a horizontally extended stop edge (16) that can abut against the bottom of the lower mold cavity.
5. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 1, 2, 3 or 4, characterized in that: The limiting assembly comprises a side top cylinder (17), a limiting slider (18) and a limiting bolt (19); the limiting slider (18) is fixed to the front end of the telescopic rod of the side top cylinder (17); the side top cylinder (17) is fixed to the outer side of the upper template (1); the telescopic rod of the side top cylinder (17) is laterally inserted into the movable cavity (101); the limiting slider (18) can firmly press the lifting cover (3) at the bottom of the movable cavity (101); and when the lifting cover (3) rises, it can abut against the lower end of the limiting bolt (19).
6. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 5, characterized in that: The limiting bolt (19) is sleeved with a second spring (20), the upper end of the second spring (20) abuts against the top wall of the movable chamber (101), and the lower end of the second spring (20) abuts against the top plate (32) of the lifting outer cover (3).
7. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 6, characterized in that: A first needle valve type hot runner (21) and a second needle valve type hot runner (22) are also slidably disposed in the upper mold plate (1); outlets of the first needle valve type hot runner (21) and the second needle valve type hot runner (22) are both located on the expansion pressure plate (4); the first needle valve type hot runner (21) and the second needle valve type hot runner (22) are fixed to the mounting plate (5) and rise and fall synchronously with the expansion pressure plate (4).
8. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 7, characterized in that: The outer side of the movable cavity (101) is provided with a clearance groove (103), and the limiting sliding block (18) can be embedded in the clearance groove (103) when retreating.
9. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 8, characterized in that: The front end of the limit slider (18) has an inclined push surface. When the limit slider (18) moves forward, the upper end of the limit slider (18) abuts against the top wall of the movable cavity (101), and the lower end of the limit slider (18) abuts against the top plate (32) of the lifting cover (3).
10. The foaming and injection molding integrated mold for automobile interior decoration parts according to claim 2, characterized in that: An edge-wrapping forming groove (35) is formed on the inner side of the lower end of the vertical enclosure plate (31), and the edge-wrapping forming groove (35) can be communicated with the forming cavity after the lifting outer cover (3) rises.