Vehicle trim part forming die

Abstract

The utility model discloses a kind of vehicle ornament forming die, the die includes upper die and lower die, the upper die includes elastic pressure piece and first mould, the first mould is movably embedded with the elastic pressure piece;The lower die includes buoyant member and second mould, the second mould is movably embedded in the buoyant member;When the upper die and the lower die close die: the elastic pressure piece is oppositely arranged with the buoyant member and can move towards each other, to make the partial area of sheet forming;The first mould is oppositely arranged with at least part of the second mould and can move towards each other, to make the remaining area of sheet forming.The utility model can ensure that sheet rebound is uniform and the flatness of appearance profile, eliminate the adverse problem caused by drawing production mode to vehicle ornament appearance.

Description

Technical Field

[0001] This utility model relates to the field of vehicle trim processing technology, and in particular to a vehicle trim molding die. Background Technology

[0002] Currently, sunroof covers, as one of the exterior decorative parts of vehicles, are typically formed using a drawing process. During the forming process, the sheet material is clamped between a pressure ring and a die, and then shaped by the closing of the punch and die. Utilizing the plasticity of the sheet, it is fully deformed and plasticized, thus ensuring the dimensional accuracy of the sunroof cover. The advantages of this forming method are good dimensional stability, minimal springback, and easier control. However, since the sunroof cover is an exterior part, forming it using a drawing process results in a thinner sheet, leading to uneven surfaces and appearance issues such as orange peel texture, stretch marks, cracks, and refraction. Furthermore, during springback after forming, the inconsistent stress and strain necessitates compensation on the die surface, which can further distort the die surface. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a vehicle trim molding die that improves the appearance of the vehicle trim while ensuring the molding of the trim.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A vehicle trim molding die, the die comprising an upper die and a lower die, the upper die comprising an elastic pressure member and a first mold, the first mold being movably fitted with the elastic pressure member; The lower mold includes a floating component and a second mold, the second mold being movably embedded within the floating component; When the upper mold and the lower mold are closed: the elastic pressure member and the floating member are arranged opposite each other and can move towards each other to form a portion of the sheet material; the first mold is at least partially arranged opposite to the second mold and can move towards each other to form the remaining portion of the sheet material.

[0005] Specifically, the first mold is a concave mold and the second mold is a convex mold; or, the first mold is a convex mold and the second mold is a concave mold.

[0006] Furthermore, the first model includes a first main body and a second main body; The first main body is embedded in the elastic pressure member, and the second main body is sleeved on the outside of the elastic pressure member, and the first main body and the second main body can move synchronously relative to the elastic pressure member.

[0007] Furthermore, the side of the buoyancy member away from the second mold has a relief groove, and the side of the second body near the elastic pressure member has an outwardly protruding forming part; When the upper mold and the lower mold are closed, the forming part is at least partially embedded in the relief groove to form the edge area of ​​the sheet.

[0008] Furthermore, after the upper mold and the lower mold are fully closed, the surface of the second mold is higher than the lifting surface of the floating component. Furthermore, the surface of the first mold matches the surface of the second mold, and the surface of the first mold is concave inward in a direction away from the second mold.

[0009] Furthermore, the pressure-applying surface of the elastic pressure-applying member matches the lifting surface of the buoyancy member; the lifting surface of the buoyancy member is an arc surface, and the lifting surface of the buoyancy member bulges outward toward the elastic pressure-applying member.

[0010] Furthermore, the portion of the first mold and the second mold that are opposite each other is provided with a punch, and the second mold is provided with a relief hole that can be positioned opposite the punch so that the punch can be embedded in the relief hole.

[0011] Furthermore, the upper mold includes an upper positioning component, and the lower mold includes a lower positioning component; The upper positioning component is disposed around the outside of the elastic pressure member, and the lower positioning component is disposed around the outside of the buoyancy member; After the upper mold and the lower mold are closed, the upper positioning component and the lower positioning component are positioned opposite each other.

[0012] Furthermore, the upper positioning component includes a push block, and the lower positioning component includes a main positioning member and a reset member. When the upper mold moves away from the lower mold, the reset member drives the main positioning member to move towards the upper mold.

[0013] Furthermore, the upper positioning component includes an auxiliary push block, and the lower positioning component includes a lifting positioning element; After the upper mold and the lower mold are closed, the auxiliary push block is positioned opposite to the lifting and positioning component, and the distance between the lifting and positioning component and the auxiliary push block is adjustable.

[0014] The beneficial effects of this invention are as follows: by setting separate punches and elastic pressure components in the upper mold, and separate floating components and punches in the lower mold, the upper and lower molds can achieve segmented forming of the sheet material. Segmented forming of the sheet material allows stress to be released locally on the sheet material (e.g., on most of the sheet's surface) and then dispersed. The remaining areas of the sheet material (e.g., the center and edge areas) are then formed by the cooperation of the die and punch to release residual stress, thereby fully transferring stress to the edges of the sheet material. The forming mold of this invention ensures uniform sheet material rebound and a smooth surface, eliminating the adverse effects of the drawing process on the appearance of vehicle trim parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the upper mold in this utility model; Figure 2 This is a top view of the upper mold in this utility model; Figure 3 for Figure 2 A cross-sectional view of the AA plane; Figure 4 This is a schematic diagram of the lower mold structure of this utility model; Figure 5 This is a top view of the lower mold in this utility model; Figure 6 for Figure 5 A cross-sectional view of the BB plane; Figure 7 This is a schematic diagram illustrating the working principle of the vehicle trim molding die in this utility model. Figure 8 This is an exploded view of the vehicle trim molding die of this utility model.

[0016] Label Explanation: 1. Upper die; 11. Elastic pressure component; 111. Pressure surface; 12. Die; 121. First main body; 122. Second main body; 1221. Forming part; 13. Upper template; 14. Guide sleeve; 15. Upper positioning assembly; 151. Push block; 152. Auxiliary push block; 16. Punch; 17. Second reset component; 2. Lower mold; 21. Floating component; 211. Relief groove; 212. Elevating surface; 22. Punch; 23. Lower template; 24. Guide post; 25. First reset component; 26. Lower positioning assembly; 261. Main positioning component; 262. Lifting positioning component; 27. Relief hole; 28. Reset spring; 3. Material sheet. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figures 1-8 A vehicle trim molding die includes an upper die 1 and a lower die 2. The upper die 1 includes an elastic pressure member 11 and a concave die 12 (in a specific embodiment, a first mold is used as the concave die). The concave die 12 is movably fitted with the elastic pressure member 11. The lower die 2 includes a floating member 21 and a punch 22 (in a specific embodiment, a second mold is used as the punch). The punch 22 is movably fitted into the floating member 21. When the upper die 1 and the lower die 2 are closed: the elastic pressure member 11 and the floating member 21 are arranged opposite each other and can move towards each other to form a portion of the sheet material 3; the concave die 12 is at least partially arranged opposite to the punch 22 and can move towards each other to form the remaining portion of the sheet material 3.

[0019] It is understood that by setting a separate punch 22 and an elastic pressure member 11 in the upper mold 1, and setting a separate floating member 21 and a punch 22 in the lower mold 2, the upper mold 1 and the lower mold 2 can achieve segmented forming of the sheet 3. Segmented forming of the sheet 3 allows stress to be released locally on the sheet 3 (such as most of the surface of the sheet 3) and then dispersed. Then, the die 12 and the punch 22 cooperate to form the remaining area of ​​the sheet 3 (such as the middle and edge areas of the sheet 3) to release residual stress, thereby fully transferring the stress to the edge of the sheet 3. The forming mold of this utility model can ensure uniform springback of the sheet 3 and flatness of the appearance surface, eliminating the adverse problems caused by the drawing production method to the appearance of vehicle trim parts.

[0020] Preferably, during the forming process of sheet 3, after the upper mold 1 and the lower mold 2 are closed, most of the area of ​​sheet 3 is first clamped by the elastic pressure member 11 and the floating member 21, so that sheet 3 is formed in one step. Then, the concave mold 12 and the convex mold 22 move towards each other to apply pressure to the middle and edge areas of sheet 3, so that the middle and edge areas of sheet 3 are formed, thereby realizing the secondary forming of sheet 3 and dispersing stress.

[0021] The upper mold 1 includes an upper template 13 and guide sleeves 14. Elastic pressure components 11 and a cavity mold 12 are movably connected to the upper template 13, with their movement direction parallel to the mold closing direction. Multiple guide sleeves 14 are provided, evenly distributed throughout the mold. The lower mold 2 includes a lower template 23, guide pillars 24, and a first reset component 25. Multiple guide pillars 24 are provided, evenly distributed throughout the mold and matched with each guide sleeve 14. The guide pillars 24 are inserted into the guide sleeves 14, providing positioning and guidance for the upper and lower templates 13. The first reset component 25 is located on the lower template 23 away from the upper template 13, with its movable end connected to a floating component 21 and the lower template 23. The floating component 21 is integrally formed with the lower template 23. The first reset member 25 serves two purposes: firstly, it supports the floating member 21; secondly, it pushes the sheet 3 to its discharge position after the sheet 3 has been formed. Furthermore, a second reset member 17 is provided between the upper template 13 and the elastic pressure member 11. The first reset member 25 and the second reset member 17 can be driving components such as nitrogen springs or hydraulic cylinders.

[0022] In some embodiments, the die 12 includes a first body 121 and a second body 122. The first body 121 is embedded in the elastic pressure member 11, and the second body 122 is sleeved on the outside of the elastic pressure member 11. The first body 121 and the second body 122 can move synchronously relative to the elastic pressure member 11. The first body 121 is centrally located in the elastic pressure member 11, while the second body 122 is located at the edge of the elastic pressure member 11. Through the arrangement of the first body 121 and the second body 122, the middle and edge regions of the sheet 3 can be extruded and formed respectively during the secondary forming process of the sheet 3, so that the stress of the sheet 3 is transferred to the middle and edge regions of the sheet 3 before the sheet 3 is formed.

[0023] The die 12 is fixedly connected to the upper template 13, and the punch 22 is connected to the lower template 23. As the upper die 1 moves downward, the elastic pressure member 11 of the upper die 1 first contacts the sheet 3 and cooperates with the floating member 21 to press the sheet 3, forming a preliminary shape. The upper die 1 continues to move downward. Driven by the first reset member 25, the elastic pressure member 11 contracts and moves upward relative to the die 12. Driven by the second reset member 17, the floating member 21 of the lower die 2 moves downward relative to it, thereby allowing the first main body 121 to contact and cooperate with the punch 22 for partial stamping. During this process, the push block 151 can push the main positioning member downward to avoid interference; the auxiliary push block 152 pushes the lifting positioning member 262 downward. When the upper die 1 moves upward, the first reset member 25 and the second reset member 17 respectively drive the elastic pressure member 11 and the floating member 21 to reset. The reset spring 28 of the main positioning member can drive the main positioning member 261 to reset, and the first reset member 25 drives the lifting positioning member 262 to reset.

[0024] In some embodiments, along the length of the upper die 1, the die 12 is at least partially centrally located within the elastic pressure member 11; along the length of the lower die 2, the punch 22 is centrally located within the floating member 21, such that the die 12 and the punch 22 compress the sheet 3 in the central region of the sheet 3 to form a corresponding structure, thereby fully releasing stress. Furthermore, a punch may be embedded in the portion of the die 12 centrally located within the elastic pressure member 11. Correspondingly, a clearance hole corresponding to the punch is formed on the punch 22, so that after the die 12 and the punch 22 are closed, the punch can punch a hole in the sheet 3 in the corresponding region, thereby fully releasing residual stress.

[0025] In some embodiments, the floating member 21 has a relief groove 211 on the side away from the punch 22, and the second body 122 has an outwardly protruding forming portion 1221 on the side near the elastic pressure member 11. When the upper mold 1 and the lower mold 2 are closed, the forming portion 1221 is at least partially embedded in the relief groove 211 to form the edge region of the sheet 3. The relief groove 211 is provided to provide relief space for the forming portion 1221, so that the forming portion 1221 drives the edge region of the sheet 3 to bend toward the relief groove 211, thereby forming the edge region of the sheet 3. Preferably, the side of the relief groove 211 near the punch 22 should be flush with the side of the elastic pressure member 11 away from the die 12, and the side of the second body 122 near the elastic pressure member 11 should be flush with the side of the relief groove 211 near the punch 22.

[0026] In some embodiments, after the upper mold 1 and lower mold 2 are fully closed, the profile of the punch 22 is higher than the lifting surface 212 of the floating member 21 to form a step in the middle region of the sheet 3. Preferably, in this state, the profile of the punch 22 is only slightly higher than the lifting surface 212 of the floating member 21, and the height difference between the profile of the punch 22 and the lifting surface 212 of the floating member 21 depends on the height required for the step in the actual product. In other equivalent embodiments, the profile of the punch 22 may also be flush with or lower than the lifting surface 212 of the floating member 21; when the profile of the punch 22 is lower than the lifting surface 212 of the floating member 21, the profile of the die 12 should be lower than the pressure surface 111 of the elastic pressure member 11.

[0027] In some embodiments, the profile of the die 12 matches the profile of the punch 22, and the profile of the die 12 is concave inward in a direction away from the punch 22, so as to apply pressure to the sheet 3 on both sides in the thickness direction of the sheet 3 simultaneously, ensuring the forming effect of the sheet 3 in this area. Preferably, the profile of the die 12 is an arc surface.

[0028] In some embodiments, the pressure surface 111 of the elastic pressure member 11 matches the lifting surface 212 of the floating member 21; the lifting surface 212 of the floating member 21 is an arc surface, and the lifting surface 212 of the floating member 21 bulges outward toward the elastic pressure member 11, ensuring the flatness of most areas of the sheet 3 after molding, and giving the sheet 3 a corresponding curvature.

[0029] In some embodiments, the upper mold 1 includes an upper positioning component 15, and the lower mold 2 includes a lower positioning component 26. The upper positioning component 15 is disposed around the outside of the elastic pressure member 11, and the lower positioning component 26 is disposed around the outside of the floating member 21. When the upper mold 1 and the lower mold 2 are closed, the upper positioning component 15 and the lower positioning component 26 are disposed opposite to each other. Through the cooperation of the upper positioning component 15 and the lower positioning component 26, the sheet 3 can be initially positioned before forming. The upper positioning component 15 includes a plurality of push blocks 151 disposed around the elastic pressure member 11, and the lower positioning component 26 includes a plurality of main positioning members 261 disposed around the outside of the floating member 21.

[0030] In some embodiments, the upper positioning component 15 includes an auxiliary push block 152, and the lower positioning component 26 includes a lifting positioning member 262. When the upper mold 1 and the lower mold 2 are closed, the auxiliary push block 152 and the lifting positioning member 262 are positioned opposite each other, and the distance between the lifting positioning member 262 and the auxiliary push block 152 is adjustable. The movable end of the lifting positioning member 262 passes through the lower template 23 and can be raised and lowered relative to the lower template 23. Preferably, three lifting positioning members 262 are arranged around the floating member 21, and the three lifting positioning members 262 are equally spaced, wherein two lifting positioning members 262 are arranged at the corners of the floating member 21, and the auxiliary push block 152 is arranged around the elastic pressure member 11 at a position corresponding to the lifting positioning member 262. Further, the main positioning member 261 and the lower template 23 are embedded in the lower template 23 in a way that allows them to be raised and lowered relative to each other.

[0031] Embodiment 1 of this utility model is as follows: A molding die for vehicle trim parts includes an upper die 1 and a lower die 2. The upper die 1 includes an elastic pressure member 11 and a die 12, the die 12 being movably fitted with the elastic pressure member 11. The lower die 2 includes a lifting member 21 and a punch 22, the punch 22 being movably fitted within the lifting member 21. When the upper die 1 and the lower die 2 are closed: the elastic pressure member 11 and the lifting member 21 are positioned opposite each other and can move towards each other, so that the area of ​​the sheet 3 other than the center and edge areas is formed; the die 12 is at least partially positioned opposite the punch 22 and can move towards each other, so that the remaining area of ​​the sheet 3 is formed.

[0032] In this embodiment, the upper mold 1 further includes an upper template 13 and a guide sleeve 14. The elastic pressure member 11 and the die 12 are movably connected to the upper template 13, and the direction of movement is parallel to the mold closing direction. The guide sleeve 14 passes through the upper template 13 and the die 12, and there are multiple guide sleeves 14, all of which are evenly distributed. The lower mold 2 further includes a lower template 23, a guide post 24, and a first reset member 25. The guide post 24 is connected to the side of the lower template 23 facing the upper template 13, and there are multiple guide posts 24, all of which are evenly distributed and match each guide sleeve 14.

[0033] In this embodiment, the die 12 includes a first body 121 and a second body 122. The first body 121 is embedded in the elastic pressure member 11, and the second body 122 is sleeved on the elastic pressure member 11. The first body 121 and the second body 122 can move synchronously relative to the elastic pressure member 11. In the length direction of the upper die 1, the first body 121 of the die 12 is centrally located in the elastic pressure member 11. In the length direction of the lower die 2, the punch 22 is centrally located in the floating member 21, so that the die 12 and the punch 22 compress the sheet 3 in the middle region of the sheet 3 to form a corresponding structure, thereby fully releasing the stress. Further, a punch 16 can be embedded in the part of the die 12 centrally located in the elastic pressure member 11. Correspondingly, a clearance hole 27 corresponding to the punch 16 is opened on the punch 22.

[0034] In this embodiment, the floating member 21 has a relief groove 211 on the side away from the punch 22, and the second body 122 has an outwardly protruding forming portion 1221 on the side near the elastic pressure member 11. When the upper mold 1 and the lower mold 2 are closed, part of the forming portion 1221 is embedded in the relief groove 211 to form the edge area of ​​the sheet 3. The depth of the forming portion 1221 inserted into the relief groove 211 depends on the required size of the forming portion 1221 in the edge area of ​​the sheet 3. Preferably, the side of the relief groove 211 near the punch 22 should be flush with the side of the elastic pressure member 11 away from the first mold 12, and the side of the second body 122 near the elastic pressure member 11 should be flush with the side of the relief groove 211 near the punch 22.

[0035] In this embodiment, after the upper mold 1 and the lower mold 2 are fully closed, the profile of the punch 22 is slightly higher than the lifting surface 212 of the floating part 21, so as to form a step in the middle area of ​​the sheet 3.

[0036] In this embodiment, the surface of the first mold 12 matches the surface of the punch 22. Both the surface of the first mold 12 and the surface of the punch 22 are arc surfaces. The surface of the first mold 12 is concave inward in the direction away from the punch 22. The pressure surface 111 of the elastic pressure member 11 matches the lifting surface 212 of the floating member 21. The lifting surface 212 of the floating member 21 is arc surface, and the lifting surface 212 of the floating member 21 is convex outward in the direction close to the elastic pressure member 11.

[0037] In this embodiment, the upper mold 1 includes an upper positioning component 15, and the lower mold 2 includes a lower positioning component 26. The upper positioning component 15 is arranged around the outside of the elastic pressure member 11, and the lower positioning component 26 is arranged around the outside of the floating member 21. When the upper mold 1 and the lower mold 2 are closed, the upper positioning component 15 and the lower positioning component 26 are positioned opposite each other. The upper positioning component 15 includes a plurality of push blocks 151 arranged around the elastic pressure member 11, and the lower positioning component 26 includes a plurality of main positioning members 261 arranged around the outside of the floating member 21.

[0038] In this embodiment, the upper positioning component 15 includes an auxiliary push block 152, and the lower positioning component 26 includes a lifting positioning member 262. When the upper mold 1 and the lower mold 2 are closed, the auxiliary push block 152 and the lifting positioning member 262 are positioned opposite each other, and the distance between the lifting positioning member 262 and the auxiliary push block 152 is adjustable. The movable end of the lifting positioning member 262 passes through the lower template 23 and can be raised and lowered relative to the lower template 23. Preferably, three lifting positioning members 262 are arranged around the floating member 21, and the three lifting positioning members 262 are equally spaced. Two of the lifting positioning members 262 are located at the corners of the floating member 21, while the auxiliary push block 152 is located around the elastic pressure member 11 at a position corresponding to the lifting positioning member 262. Further, the main positioning member 261 and the lower template 23 are embedded in the lower template 23 in a way that allows them to be raised and lowered relative to each other.

[0039] The working principle of this utility model is as follows: When the upper mold 1 and the lower mold 2 are closed, the lower positioning component 26 is in a raised state (i.e., the top of the lower positioning component 26 is higher than the lifting surface 212), so the upper positioning component 15 and the lower positioning component 26 cooperate to jointly position the sheet 3, the main positioning component ( Figure 7 (a is omitted) The material sheet is placed on the periphery to restrict its horizontal movement. The material sheet 3 falls onto the lifting surface 212 of the floating component 21. Reference Figure 7 (b) As the upper mold 1 continues to move downward, the elastic pressure member 11 moves downward and together with the floating member 21 squeezes the sheet 3, so that most of the area of ​​the sheet 3 is formed in one step; at the same time, the push block drives the main positioning member to move downward to avoid interference (because the sheet is bent downward around its perimeter).

[0040] Reference Figure 7 (c) The upper mold 1 continues to move downward, the first reset member 25 drives the first main body 121 to move downward relative to the second main body 122, and the second reset member 17 drives the floating member 21 to move downward relative to the punch 22 until the first main body 121 and the punch 22 press against each other. Under the extrusion of the first main body 121 and the punch 22, and after the forming part 1221 of the second main body 122 continues to be inserted into the relief groove 211, the secondary forming is completed. During the secondary forming process, the first main body 121 and the punch 22 cooperate to extrude the central area of ​​the sheet 3, while the second main body 122 cooperates with the floating part 21 to extrude the edge area of ​​the sheet 3.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A molding die for vehicle trim parts, the die comprising an upper die and a lower die, characterized in that, The upper mold includes an elastic pressure-applying component and a first mold, the first mold being movably fitted with the elastic pressure-applying component; The lower mold includes a floating component and a second mold, the second mold being movably embedded within the floating component; When the upper mold and the lower mold are closed: the elastic pressure member and the floating member are arranged opposite each other and can move towards each other to form a portion of the sheet material; the first mold is at least partially arranged opposite to the second mold and can move towards each other to form the remaining portion of the sheet material.

2. The vehicle trim molding die according to claim 1, characterized in that, The first model includes a first main body and a second main body; The first main body is embedded in the elastic pressure member, and the second main body is sleeved on the outside of the elastic pressure member, and the first main body and the second main body can move synchronously relative to the elastic pressure member.

3. The vehicle trim molding die according to claim 1, characterized in that, The floating member has a relief groove on the side away from the second mold, and the second body has an outwardly protruding forming part on the side close to the elastic pressure member. When the upper mold and the lower mold are closed, the forming part is at least partially embedded in the relief groove to form the edge area of ​​the sheet.

4. The vehicle trim molding die according to claim 1, characterized in that, After the upper mold and the lower mold are fully closed, the surface of the second mold is higher than the lifting surface of the floating component.

5. A vehicle trim molding die according to claim 1 or 4, characterized in that, The surface of the first mold matches the surface of the second mold, and the surface of the first mold is concave inward in a direction away from the second mold.

6. The vehicle trim molding die according to claim 5, characterized in that, The pressure-applying surface of the elastic pressure-applying member matches the lifting surface of the buoyancy member; and the lifting surface of the buoyancy member bulges outward toward the elastic pressure-applying member.

7. The vehicle trim molding die according to claim 1, characterized in that, The first mold and the second mold are respectively provided with punches in the opposite parts. The second mold is provided with a relief hole that can be arranged opposite to the punch, so that the punch can be embedded in the relief hole.

8. A vehicle trim molding die according to claim 1, characterized in that, The upper mold includes an upper positioning component, and the lower mold includes a lower positioning component; The upper positioning component is disposed around the outside of the elastic pressure member, and the lower positioning component is disposed around the outside of the buoyancy member; After the upper mold and the lower mold are closed, the upper positioning component and the lower positioning component are positioned opposite each other.

9. A vehicle trim molding die according to claim 8, characterized in that, The upper positioning component includes a push block, and the lower positioning component includes a main positioning component and a reset component. When the upper mold moves away from the lower mold, the reset component drives the main positioning component to move toward the upper mold.

10. A vehicle trim molding die according to claim 1, characterized in that, The upper positioning component includes an auxiliary push block, and the lower positioning component includes a lifting positioning element; After the upper mold and the lower mold are closed, the auxiliary push block is positioned opposite to the lifting and positioning component, and the distance between the lifting and positioning component and the auxiliary push block is adjustable.

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