Special slider core-pulling structure of tailgate side trim plate

Abstract

The application relates to a special slider core-pulling structure of a tailgate side trim plate, and belongs to the technical field of molds. The structure comprises a control plate slidably arranged on a hot runner fixing part, the hot runner fixing part is provided with a control sliding groove for sliding of the control plate, both ends of the control plate are provided with control members for sliding of the control plate, the control plate is provided with a forming part, one side of the forming part away from an insert is provided with a forming groove for forming a reverse buckle feature, the forming part comprises a plurality of forming blocks, the forming blocks are arranged in a circumferential array with the axis of the forming groove as the center, the control plate is provided with an insert for providing support for a single forming block, one side of the forming block close to the insert is provided with an adjusting slider, when the insert slides along with the control plate towards a direction away from a fixed mold, the adjusting slider can drive the forming block to slide towards the obliquely lower side of the reverse buckle and separate from the reverse buckle. The application has the effect that the reverse buckle feature designed on the appearance surface of the tailgate side trim plate can be smoothly demolded.

Description

Technical Field

[0001] This application relates to the technical field of molds, and in particular to a special slider core-pulling structure for a tailgate side trim panel. Background Technology

[0002] Tailgate side panels typically refer to the decorative or functional interior / exterior panels on the left and right sides of a car's tailgate (trunk door). They are part of the vehicle's body trim. Tailgate side panels usually require molds for production. A tailgate side panel to be manufactured contains an undercut feature, and this undercut feature is on the exterior surface. Since the exterior surface of the tailgate side panel cannot have a molding line, the undercut feature cannot be generated using a conventional core-pulling structure. Therefore, a new core-pulling structure needs to be designed. Summary of the Invention

[0003] In order to enable the undercut features designed on the exterior surface of the tailgate side panel to be easily demolded, this application provides a special slider core-pulling structure for the tailgate side panel.

[0004] This application provides a special slider core-pulling structure for a tailgate side trim panel, which adopts the following technical solution: A special slider core-pulling structure for a tailgate side trim panel is provided on a hot runner fixing part and cooperates with a fixed mold to form an undercut feature on the tailgate side trim panel. The structure is characterized by including a control plate slidably disposed on the hot runner fixing part, wherein the hot runner fixing part is provided with a control groove for sliding the control plate, and both ends of the control plate are provided with control components for driving the control plate to slide. The control plate is provided with a molding part, and the side of the molding part away from the insert is provided with a molding groove for forming an undercut feature. The molding part includes multiple molding blocks, which are arranged in a circumferential array around the axis of the molding groove. The control plate is provided with an insert for supporting a single molding block. The side of the molding block near the insert is provided with an adjusting slider. When the insert slides away from the fixed mold along with the control plate, the adjusting slider can drive the molding block to slide diagonally downward towards the undercut until it separates from the undercut. The insert is provided with an adjusting component for controlling the sliding of the adjusting slider.

[0005] By adopting the above technical solution, the molding part is divided into multiple molding blocks that are easy to demold, depending on the shape of the molding groove. When the insert slides away from the fixed mold along with the control plate, the adjusting slider can drive the molding block to slide towards the undercut at an angle below the undercut until it separates from the undercut, so that the undercut feature designed on the exterior surface of the tailgate side panel can be demolded smoothly.

[0006] Preferably, the adjustment assembly includes a guide post disposed on the insert, the insert having a guide hole for receiving the guide post, and the adjustment slider having a guide through hole for sliding the guide post, the guide post cooperating with the guide through hole to restrict the sliding direction of the adjustment slider; The adjustment assembly also includes pressure strips disposed on both sides of the adjustment slider. The adjustment slider is T-shaped, and the pressure strips are in contact with the belly and flange of the adjustment slider. The pressure strips are fixed to the fixed mold by bolts.

[0007] By adopting the above technical solution, when the control plate drives the insert and the guide post set on the insert to slide towards the ground, the guide post will cooperate with the guide through hole and drive the adjusting slider to slide obliquely along the guide post. During this process, the adjusting slider will remain in contact with the pressure strip under the restriction of the pressure strip, and will not easily move vertically with the sliding of the insert. This ensures the reliability of the adjusting slider driven by the sliding of the control plate to drive the molding block to slide to separate from the undercut feature.

[0008] Preferably, the adjustment assembly further includes a locking wedge disposed on the insert, the locking wedge having a locking inclined surface on the side facing the molding block, the molding block having a mating inclined surface that cooperates with the locking inclined surface, the locking inclined surface and the mating inclined surface abutting against each other when the molding block is assembled, and the adjustment slider having a sliding locking groove for sliding the locking wedge.

[0009] By adopting the above technical solution and setting the locking wedge, the tailgate side trim panel can be further supported by the locking wedge during the forming process, thus ensuring the quality of the tailgate side trim panel after forming.

[0010] Preferably, a limiting block is provided on the side of the insert away from the axis of the molding groove. When the molding block is assembled, the end of the adjusting slider away from the axis of the molding groove abuts against the limiting block.

[0011] By adopting the above technical solution, the setting of the limiting block can further support the forming block, share the pressure on the forming block during the forming process of the tailgate side trim panel, and the locking wedge supports the top of the forming block, while the limiting block is made for the tail of the forming block, so that the forming block is not easily deformed during the inverted forming process, thus ensuring the service life of the forming block to a certain extent.

[0012] Preferably, the limiting block is provided with a limiting inclined surface, and the adjusting block is provided with an adjusting inclined surface that cooperates with the limiting inclined surface. The cooperation between the limiting inclined surface and the adjusting inclined surface allows the insert to move to fit against the adjusting slider.

[0013] By adopting the above technical solution, the combination of the limiting inclined surface and the adjusting inclined surface facilitates resetting and ensures the stability of the structure during use.

[0014] Preferably, a positioning post is integrally formed on the hot runner fixing part, the positioning post is located within the enclosure of the control slide, and the control plate is provided with a positioning through hole that cooperates with the positioning post.

[0015] By adopting the above technical solution, the positioning column and the positioning through hole cooperate to provide guidance for the sliding of the control plate in the control groove, and to ensure the stability of the sliding of the control plate in the control groove.

[0016] Preferably, the control component includes a control cylinder, the piston rod of the control cylinder is provided with a connecting part, the connecting part includes a connecting post and connecting blocks provided at both ends of the connecting post, the control plate is provided with a placement step that cooperates with the connecting part, the placement step is provided with a groove for the connecting post to be inserted, and after the connecting post is inserted into the groove, the placement step is engaged between the two connecting blocks.

[0017] By adopting the above technical solution, the hydraulic cylinder can provide greater output, higher precision, stronger rigidity and more stable control compared with the air cylinder. It can meet the mold's requirements in terms of thrust, rigidity and impact resistance. When the hydraulic cylinder piston rod retracts, it can stably drive the control plate to slide in the control groove, ensuring the stability and reliability of the control plate's sliding.

[0018] Preferably, the control panel is provided with a connecting plate for controlling the opening and closing of the groove to the outside.

[0019] By adopting the above technical solution, the sliding of the connecting part outward from the groove is restricted by the setting of the connecting plate, thereby further ensuring the reliability of the control plate sliding driven by the control cylinder.

[0020] Preferably, a fixing block is provided between the cylinder barrel of the control cylinder and the hot runner fixing part, and both the cylinder barrel of the control cylinder and the hot runner fixing part are provided with fixing grooves for the fixing block to fit into.

[0021] By adopting the above technical solution, the position of the control cylinder installed on the hot runner fixed part is restricted by the cooperation of the fixed block and the fixed groove, making it difficult for the control cylinder to move relative to the hot runner fixed part, thus ensuring the stability of the control cylinder installed on the hot runner fixed part.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Depending on the shape of the molding groove, the molding part is divided into multiple molding blocks that are easy to demold. When the insert slides away from the fixed mold along with the control plate, the adjusting slider can drive the molding block to slide towards the undercut at an angle below the undercut until it separates from the undercut, so that the undercut feature designed on the exterior surface of the tailgate side panel can be demolded smoothly. 2. The limiting block and locking wedge can provide support for the forming block, share the pressure on the forming block during the forming process of the tailgate side trim panel, and the locking wedge supports the top of the forming block, while the limiting block is made for the tail of the forming block, so that the forming block is not easy to deform during the inverted forming process, thus ensuring the service life of the forming block to a certain extent. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the separation of the fixed mold and core-pulling structure in an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of a half-section of the fixed mold in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the polymer structure of the molding block in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the molding block separation structure in an embodiment of this application.

[0027] Figure 5 yes Figure 3 Enlarged view of part A in the image.

[0028] Figure 6 yes Figure 3 Enlarged view of part B in the image.

[0029] Explanation of reference numerals in the attached drawings: 1. Hot runner fixing part; 11. Positioning post; 111. Positioning through hole; 2. Fixed mold; 3. Control plate; 31. Control slide groove; 32. Placement step; 321. Groove; 322. Connecting plate; 4. Control cylinder; 41. Connecting part; 411. Connecting post; 412. Connecting block; 42. Fixing block; 421. Fixing groove; 5. Molding part; 51. Molding groove; 52. Molding block; 521. Mating slope; 6. Insert; 61. Guide post; 611. Guide hole; 612. Placement groove; 62. Placement block; 621. Placement hole; 63. Locking wedge; 631. Locking slope; 64. Limiting block; 641. Limiting slope; 7. Adjusting slider; 71. Guide through hole; 72. Sliding locking groove; 73. Adjusting slope; 8. Pressure strip. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses a special slider core-pulling structure for a tailgate side trim panel, which is disposed on the hot runner fixing part 1 and cooperates with the fixed mold 2 to form an undercut feature on the tailgate side trim panel, as shown in the reference. Figure 1 and Figure 2The control plate 3 is slidably mounted on the hot runner fixing part 1. The hot runner fixing part 1 is provided with a control groove 31 for sliding the control plate 3. A positioning post 11 is integrally formed on the hot runner fixing part 1. The positioning post 11 is located within the enclosure of the control groove 31. The control plate 3 is provided with a positioning through hole 111 that cooperates with the positioning post 11. The positioning post 11 cooperates with the positioning through hole 111 to provide guidance for the sliding of the control plate 3 in the control groove 31 and to ensure the stability of the sliding of the control plate 3 in the control groove 31. In this embodiment, there are two positioning posts 11, which are symmetrically arranged on both sides of the axis of the control plate 3.

[0032] Reference Figure 3 and Figure 6 Both ends of the control plate 3 are equipped with control components for sliding the control plate 3. The control components include control cylinders 4. Compared with air cylinders, cylinders can provide greater output, higher precision, stronger rigidity and more stable control, which can meet the mold's requirements in terms of thrust, rigidity and impact resistance. A connecting part 41 is coaxially fixed on the piston rod of the control cylinder 4. The connecting part 41 can be fixed to the piston rod by bolts. The connecting part 41 includes a connecting post 411 and connecting blocks 412 set at both ends of the connecting post 411. The diameter of the connecting post 411 is smaller than the diameter of the connecting blocks 412. The control plate 3 is provided with a placement step 32 that cooperates with the connecting part 41. The placement step 32 is provided with a groove 321 for the connecting post 411 to be inserted. After the connecting post 411 is inserted into the groove 321, the placement step 32 is engaged between the two connecting blocks 412. Thus, when the piston rod of the control cylinder 4 retracts, it can stably drive the control plate 3 to slide along the positioning post 11 in the control slide groove 31, ensuring the stability and reliability of the sliding of the control plate 3.

[0033] Reference Figure 2 and Figure 6 The control plate 3 is provided with a connecting plate 322 for controlling the opening and closing of the groove 321 to the outside. The connecting plate 322 is fixed to the control plate 3 with bolts. In actual application, the setting of the connecting plate 322 restricts the sliding of the connecting part 41 outward from the groove 321, thereby further ensuring the reliability of the sliding of the control plate 3 driven by the control cylinder 4. A fixing block 42 is provided between the cylinder barrel of the control cylinder 4 and the hot runner fixing part 1. Both the cylinder barrel of the control cylinder 4 and the hot runner fixing part 1 are provided with fixing grooves 421 for the fixing block 42 to fit into. The fixing block 42 is fixed to the hot runner fixing part 1 with bolts. The cylinder barrel of the control cylinder 4 is also fixed to the hot runner fixing part 1 with bolts. The cooperation between the fixing block 42 and the fixing groove 421 restricts the position of the control cylinder 4 on the hot runner fixing part 1, making it difficult for the control cylinder 4 to move relative to the hot runner fixing part 1, thus ensuring the stability of the control cylinder 4 on the hot runner fixing part 1.

[0034] Reference Figure 3 , Figure 4 and Figure 5 The control panel 3 is provided with a forming part 5. The side of the forming part 5 away from the insert 6 is provided with a forming groove 51 for forming the undercut feature. The forming part 5 includes a plurality of forming blocks 52. The plurality of forming blocks 52 are arranged in a circular array with the axis of the forming groove 51 as the center. In this embodiment, since the undercut feature is relatively simple, three forming blocks 52 are sufficient. When the undercut feature is more complex, the forming groove 51 can be divided according to the specific situation, and four or five forming blocks 52 can be provided.

[0035] Reference Figure 3 , Figure 4 and Figure 5 The control plate 3 is provided with an insert 6 for supporting a single molding block 52. The insert 6 is fixed to the control plate 3 by bolts. An adjusting slider 7 is provided on the side of the molding block 52 near the insert 6. The adjusting slider 7 is fixed to the molding block 52 by pins. When the insert 6 slides away from the fixed mold 2 along with the control plate 3, the adjusting slider 7 can drive the molding block 52 to slide diagonally downwards towards the undercut until it separates from the undercut. The insert 6 is provided with an adjusting component for controlling the sliding of the adjusting slider 7.

[0036] The molding groove 51 on the molding part 5 is in conjunction with the fixed mold 2. During the demolding process of the tailgate side panel, the moving mold can be controlled to move to separate from the fixed mold 2. Then, the control cylinder 4 drives the control plate 3 to slide away from the ground and fit against the inner wall of the control groove 31. During this process, the adjusting slider 7 can drive the molding block 52 to slide downwards towards the undercut and separate from the undercut under the action of the adjusting component, so that the undercut feature designed on the appearance surface of the tailgate side panel can be demolded smoothly.

[0037] Reference Figure 3 , Figure 4 and Figure 5 The adjustment assembly includes a guide post 61 mounted on an insert 6. The insert 6 has a guide hole 611 for accommodating the guide post 61 and a placement block 62 for fixing the guide post 61. The insertion block 6 also has a placement hole 621 for accommodating the placement block 62, which communicates with the guide hole 611. The outer wall of the guide post 61 has a placement groove 612 for partially embedding the placement block 62. During actual installation, the placement block 62 is first embedded into the placement groove 612, and then the placement block 62 and guide post 61 are placed into their corresponding placement holes 621 and guide holes 611. The placement block 62 is then fixed to the insert 6 with bolts. The guide post 61 and the insert 6 are detachably connected. In practical applications, the guide post 61 or the insert 6 can be disassembled and reassembled as needed, facilitating maintenance and replacement, and extending the service life of the device to some extent.

[0038] Reference Figure 4 and Figure 5 The adjusting slider 7 is provided with a guide hole 71 for the guide post 61 to slide. The guide post 61 cooperates with the guide hole 71 to limit the sliding direction of the adjusting slider 7. The adjusting assembly also includes pressure strips 8 disposed on both sides of the adjusting slider 7. The adjusting slider 7 is T-shaped. The pressure strips 8 are in contact with the body and flange of the adjusting slider 7. The pressure strips 8 are fixed to the fixed mold 2 by bolts. When the control plate 3 drives the insert 6 and the guide post 61 set on the insert 6 to slide towards the ground, the guide post 61 will cooperate with the guide through hole 71, so that the adjusting slider 7 slides obliquely along the guide post 61. During this process, the adjusting slider 7 will remain in contact with the pressure strip 8 under the restriction of the pressure strip 8, and will not easily move vertically with the sliding of the insert 6. This ensures the reliability of the adjusting slider 7 driven by the sliding of the control plate 3 to drive the molding block 52 to slide to separate from the undercut feature.

[0039] Reference Figure 4 and Figure 5 The adjustment assembly also includes a locking wedge 63 mounted on the insert 6. The locking wedge 63 is fixed to the insert 6 by bolts. The locking wedge 63 has a locking inclined surface 631 on the side facing the forming block 52. The forming block 52 has a mating inclined surface 521 that cooperates with the locking inclined surface 631. When the forming block 52 is assembled, the locking inclined surface 631 and the mating inclined surface 521 are pressed together. The adjustment slider 7 has a sliding locking groove 72 for the locking wedge 63 to slide. By setting the locking wedge 63, the forming block 52 can be further supported by the locking wedge 63 during the forming process of the tailgate side trim panel, thus ensuring the quality of the tailgate side trim panel after forming.

[0040] Reference Figure 4 and Figure 5 A limiting block 64 is provided on the side of the insert 6 away from the axis of the forming groove 51. When the forming block 52 is assembled, the end of the adjusting slider 7 away from the axis of the forming groove 51 is pressed against the limiting block 64. The limiting block 64 can further support the forming block 52 and share the pressure on the forming block 52 during the forming process of the tailgate side panel. The locking wedge 63 supports the top of the forming block 52, and the limiting block 64 is made for the tail of the forming block 52, so that the forming block 52 is not easy to deform during the inverted forming process, which to a certain extent ensures the service life of the forming block 52.

[0041] Reference Figure 4 and Figure 5The limiting block 64 is provided with a limiting inclined surface 641, and the adjusting block is provided with an adjusting inclined surface 73 that cooperates with the limiting inclined surface 641. The cooperation between the limiting inclined surface 641 and the adjusting inclined surface 73 allows the insert 6 to move to fit with the adjusting slider 7. The cooperation between the limiting inclined surface 641 and the adjusting inclined surface 73 facilitates reset and ensures the stability of the structure during use.

[0042] The implementation principle of the special slider core-pulling structure for the tailgate side trim panel in this application embodiment is as follows: After the tailgate side trim panel is formed, the control plate 3 is driven to slide away from the fixed mold 2 by the connecting part 41 on the control cylinder 4. During this process, the control plate 3 drives the insert 6 and the guide post 61 and locking wedge 63 on the insert 6 to slide away from the fixed mold 2 in a synchronized manner. The guide post 61 drives the adjusting slider 7 and the forming block 52 set on the adjusting slider 7 to slide along the direction of the pressure strip 8, thereby completing the undercut feature core-pulling of the tailgate side trim panel appearance surface.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A special slider core-pulling structure for a tailgate side panel, disposed on a hot runner fixing part (1), and cooperating with a fixed mold (2) to form an undercut feature on the tailgate side panel, characterized in that, It includes a control plate (3) that is slidably disposed on the hot runner fixing part (1), the hot runner fixing part (1) is provided with a control groove (31) for the control plate (3) to slide, and both ends of the control plate (3) are provided with control components for driving the control plate (3) to slide. The control plate (3) is provided with a forming part (5). The forming part (5) is provided with a forming groove (51) for forming an undercut feature on the side away from the insert (6). The forming part (5) includes a plurality of forming blocks (52). The plurality of forming blocks (52) are arranged in a circular array with the axis of the forming groove (51) as the center. The control plate (3) is provided with an insert (6) for providing support for a single forming block (52). The side of the forming block (52) close to the insert (6) is provided with an adjusting slider (7). When the insert (6) slides away from the fixed mold (2) along with the control plate (3), the adjusting slider (7) can drive the forming block (52) to slide obliquely downward towards the undercut until it is separated from the undercut. The insert (6) is provided with an adjusting component for controlling the sliding of the adjusting slider (7).

2. The special slider core-pulling structure for the tailgate side trim panel according to claim 1, characterized in that, The adjustment assembly includes a guide post (61) disposed on the insert (6), the insert (6) is provided with a guide hole (611) for accommodating the guide post (61), and the adjustment slider (7) is provided with a guide through hole (71) for sliding the guide post (61). The guide post (61) and the guide through hole (71) cooperate to restrict the sliding direction of the adjustment slider (7). The adjustment assembly also includes pressure strips (8) disposed on both sides of the adjustment slider (7). The adjustment slider (7) is T-shaped. The pressure strips (8) are in contact with the belly and flange of the adjustment slider (7). The pressure strips (8) are fixed to the fixed mold (2) by bolts.

3. The special slider core-pulling structure for the tailgate side trim panel according to claim 2, characterized in that, The adjustment assembly also includes a locking wedge (63) disposed on the insert (6). The locking wedge (63) has a locking inclined surface (631) on the side facing the forming block (52). The forming block (52) has a mating inclined surface (521) that cooperates with the locking inclined surface (631). When the forming block (52) is assembled, the locking inclined surface (631) and the mating inclined surface (521) abut against each other. The adjustment slider (7) has a sliding locking groove (72) for sliding the locking wedge (63).

4. The special slider core-pulling structure for the tailgate side trim panel according to claim 1, characterized in that, The insert (6) has a limiting block (64) on the side away from the axis of the molding groove (51). When the molding block (52) is assembled, the end of the adjusting slider (7) away from the axis of the molding groove (51) is pressed against the limiting block (64).

5. The special slider core-pulling structure for the tailgate side trim panel according to claim 4, characterized in that, The limiting block (64) is provided with a limiting inclined surface (641), and the adjusting block is provided with an adjusting inclined surface (73) that cooperates with the limiting inclined surface (641). The cooperation between the limiting inclined surface (641) and the adjusting inclined surface (73) allows the insert (6) to move to fit against the adjusting slider (7).

6. The special slider core-pulling structure for the tailgate side trim panel according to claim 1, characterized in that, The hot runner fixing part (1) is integrally formed with a positioning post (11), the positioning post (11) is located within the enclosure of the control slide (31), and the control plate (3) is provided with a positioning through hole (111) that cooperates with the positioning post (11).

7. The special slider core-pulling structure for the tailgate side trim panel according to claim 1, characterized in that, The control component includes a control cylinder (4), and the piston rod of the control cylinder (4) is provided with a connecting part (41). The connecting part (41) includes a connecting post (411) and connecting blocks (412) provided at both ends of the connecting post (411). The control plate (3) is provided with a placement step (32) that cooperates with the connecting part (41). The placement step (32) is provided with a groove (321) for the connecting post (411) to be inserted. After the connecting post (411) is inserted into the groove (321), the placement step (32) is engaged between the two connecting blocks (412).

8. The special slider core-pulling structure for the tailgate side trim panel according to claim 7, characterized in that, The control panel (3) is provided with a connecting plate (322) for controlling the opening and closing of the groove (321) and the outside.

9. The special slider core-pulling structure for the tailgate side trim panel according to claim 7, characterized in that, A fixing block (42) is provided between the cylinder barrel of the control cylinder (4) and the hot runner fixing part (1). The cylinder barrel of the control cylinder (4) and the hot runner fixing part (1) are both provided with fixing grooves (421) for the fixing block (42) to fit.

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