Automobile interior and exterior pre-pressing shearing die

Abstract

The utility model relates to mould technical field, concretely is a kind of automobile interior and exterior decoration pre-pressing shearing die, including upper die holder, lower die holder and knife edge insert;Slidingly install mould core in upper die holder, and it is slidably connected between upper die holder and mould core by rectangular spring and nitrogen gas spring, and fixedly install return limit block on upper die holder, and upper die holder is fixedly installed knife edge insert;The upper portion of knife edge insert is equipped with limit connecting plate, and limit connecting plate is fixedly connected with mould core;Lower die holder is equipped with cavity matched with mould core, lower die holder is equipped with lower die limit block, and lower die limit block is located directly below limit connecting plate;The utility model solves the problem that product forming thickness is uneven, product thickness is not stable and out of tolerance, realizes the adjustment of forming thickness by adjusting pad mounting and dismounting, improves production range, guarantees production quality, simultaneously, by knife edge insert, it is realized that product is sheared while pre-pressing forming, product internal stress shrinkage is avoided, leading to uneven shearing.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a pre-compression shearing mold for automotive interior and exterior trim. Background Technology

[0002] Automotive interior stamping production refers to the process of processing metal sheets into automotive interior parts through stamping. Stamping is a method that uses a die to apply external force to a metal sheet, causing it to undergo plastic deformation or separation, thereby obtaining a workpiece of the required shape and size.

[0003] The stamping die mainly consists of an upper die and a lower die. The upper die has a core, and the lower die has a cavity that mates with the core. In the production process of automotive interior parts, the material is placed between the upper and lower dies, and then the upper die is pushed vertically downward by a hydraulic push rod, so that the upper and lower dies close together. Then, the material is stamped by the core on the upper die, and the excess material is sheared to complete the production of automotive interior parts.

[0004] However, after the upper and lower molds are closed and stamping is completed, the automotive interior will experience internal stress shrinkage. As a result, the excess material around the automotive interior will shrink, leading to uneven cutting during subsequent cutting.

[0005] In view of this, we propose a pre-compression shearing die for automotive interior and exterior trim. Utility Model Content

[0006] The purpose of this invention is to provide a pre-compression shearing mold for automotive interior and exterior trim to solve the problem of uneven cutting mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pre-compression shearing mold for automotive interior and exterior trim, comprising an upper mold frame, a lower mold frame, and a cutting edge insert; a mold core is slidably installed inside the upper mold frame, the mold core extrudes material to form the corresponding automotive interior trim, the upper mold frame and the mold core are slidably connected by a rectangular spring, a return limit block is fixedly installed on the upper mold frame, the rectangular spring allows the mold core and the upper mold frame to slide together, and simultaneously allows the mold core to contact the material in advance to complete the pre-compression forming; a cutting edge insert is fixedly installed on the upper mold frame. The cutting edge insert is used to cut the pre-formed product to avoid shrinkage after demolding, which would cause uneven cutting. A limiting connecting plate is provided above the cutting edge insert, and the limiting connecting plate is fixedly connected to the mold core. The lower mold frame is provided with a cavity that mates with the mold core. The lower mold frame is provided with a lower mold limiting block, which is located directly below the limiting connecting plate. The shape of the mold cavity corresponds to that of the mold core and is used to cooperate with the mold core to complete the stamping process. When the limiting connecting plate contacts the lower mold limiting block, the mold core contacts the material and the mold begins to close.

[0008] Preferably, the upper mold frame is provided with four circular guides. The circular guides are used to limit the movement trajectory of the upper mold frame, thereby completing the positioning of the upper mold frame and the lower mold frame, and thus ensuring the precise fit between the mold core and the cavity.

[0009] Preferably, the lower mold frame is provided with a placement frame, and an adjusting pad is placed on the placement frame. The adjusting pad is placed on the lower mold limiting block to achieve thickness adjustment. The adjusting pad is used to adjust the product thickness. By installing the adjusting pad on the lower mold limiting block, the distance between the limiting block connecting plate and the lower mold limiting block is reduced, thereby shortening the moving distance of the upper mold frame, which in turn shortens the moving distance of the mold core, increases the distance between the top of the mold core and the cavity, and increases the product thickness.

[0010] Preferably, the cutting edge insert includes a mounting bracket and a die-cutting blade; the mounting bracket is fixedly installed with the die-cutting blade and the upper mold frame, and the mounting bracket has a slot; the die-cutting blade has a locking block that mates with the slot, and the die-cutting blade and the mounting bracket are fixedly connected through the slot and the locking block, thereby facilitating the replacement and maintenance of the die-cutting blade. The mounting bracket is fixedly installed with the mold core and moves synchronously with the mold core. When the mold core completes pre-compression forming under the action of the rectangular spring, the upper mold frame drives the die-cutting blade through the mounting bracket to complete the cutting and forming of the product.

[0011] Preferably, the slot is an L-shaped structure and the front end of the card block is an equilateral triangle structure. When the die-cutting blade and the mounting bracket are installed, the hypotenuse of the equilateral triangle structure at the front end of the card block makes line contact with the right angle of the L-shaped structure, thereby achieving the fixed installation of the die-cutting blade and the mounting bracket. At the same time, the hypotenuse of the equilateral triangle structure will generate a component force along the direction of movement of the die-cutting blade, thereby improving the stability of the card block fixation and ensuring the stability of the die-cutting blade installation.

[0012] Preferably, the die-cutting blade is a flat die-cutting blade, which has the advantages of simple structure, convenient maintenance and easy operation, which facilitates the improvement of cutting efficiency for automotive interior parts and ensures cutting quality.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model solves the problems of uneven product molding thickness and unstable product thickness exceeding tolerance. The molding thickness can be adjusted by adjusting the installation and removal of the pad, which improves the production range and ensures the production quality. At the same time, the cutting edge insert enables the product to be sheared while pre-pressing, avoiding internal stress shrinkage of the product and resulting in uneven shearing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall mold of this utility model; Figure 2 This is a front sectional view of the mold of this utility model; Figure 3 This utility model Figure 2 A magnified view of point A; Figure 4 This is a half-sectional schematic diagram of the mold of this utility model; Figure 5 This utility model Figure 4 A magnified view of point B; Figure 6 This is a cross-sectional view of the blade insert of this utility model.

[0015] In the picture: 1. Upper mold base; 11. Mold core; 12. Rectangular spring; 13. Nitrogen spring; 14. Return limit block; 15. Limit connecting plate; 16. Circular guide; 2. Lower mold holder; 21. Cavity; 22. Lower mold limiting block; 23. Placement rack; 231. Adjustment pad; 3. Cutting edge insert; 31. Mounting bracket; 311. Slot; 312. L-shaped structure; 32. Die-cutting blade; 321. Locking block; 322. Equilateral triangle structure. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The stamping die mainly consists of an upper die and a lower die. The upper die has a core, and the lower die has a cavity that mates with the core. In the production process of automotive interior parts, the material is placed between the upper and lower dies, and then the upper die is pushed vertically downward by a hydraulic push rod, so that the upper and lower dies close together. Then, the material is stamped by the core on the upper die, and the excess material is sheared to complete the production of automotive interior parts.

[0018] However, after the upper and lower molds are closed and stamping is completed, the automotive interior will experience internal stress shrinkage. As a result, the excess material around the automotive interior will shrink, leading to uneven cutting during subsequent cutting.

[0019] like Figures 1 to 6As shown, a pre-compression shearing mold for automotive interior and exterior trim includes an upper mold frame 1, a lower mold frame 2, and a cutting edge insert 3. A mold core 11 is slidably installed inside the upper mold frame 1, and the upper mold frame 1 and the mold core 11 are slidably connected by a rectangular spring 12 and a nitrogen spring. The cutting edge insert 3 is fixedly installed on the upper mold frame 1. A return limit block 15 is provided above the cutting edge insert 3, and the return limit block 15 is fixedly connected to the mold core 11. The lower mold frame 2 is provided with a cavity 21 that mates with the mold core 11, and a lower mold limit block 22 is provided on the lower mold frame 2, with the lower mold limit block 22 located directly below the return limit block 15. Specifically, a mold core 11 is slidably installed inside the upper mold frame 1. The mold core 11 extrudes material to form the corresponding automotive interior trim. The upper mold frame 1 and the mold core 11 are slidably connected by a rectangular spring 12 and a nitrogen spring 13. The rectangular spring 12 allows the mold core 11 to slide between the mold core 11 and the upper mold frame 1, and at the same time, the rectangular spring 12 allows the mold core 11 to contact the material in advance to complete the pre-compression molding. A cutting edge insert 3 is fixedly installed on the upper mold frame 1. The cutting edge insert 3 is used to cut the pre-compressed product to avoid shrinkage after demolding, which would cause uneven cutting. A return limit block 15 is provided above the cutting edge insert 3, and the return limit block 15 is fixedly connected to the mold core 11. The cavity 21 corresponds to the shape of the mold core 11 and is used to cooperate with the mold core. 11. The stamping process is completed. The lower die holder 2 is equipped with a lower die limit block 22, which is located directly below the return limit block 15. When the return limit block 15 contacts the lower die limit block 22, the die core 11 contacts the material, and the die core 11 and the cavity 21 begin to close. The upper die holder 1 continues to move downward to compress the rectangular spring 12. The rectangular spring 12 and the nitrogen spring 13 transmit the pressure to the die core 11, and the die core 11 continues to hold the material under pressure. When the upper die holder 1 moves downward to a distance of 5mm from the lower die holder, the upper die holder 1 drives the cutting edge insert 3 to move downward synchronously. When the return limit block 14 on the upper die holder 1 contacts the return limit block 15, the die core 11 and the cavity 21 close. At the same time, the cutting edge insert 3 completes the cutting of the formed product. Preferably, when producing automotive interior parts, a feeding device, such as a conveyor belt, is provided on one side of the mold. The material is placed on the conveyor belt, which transports the material between the upper mold frame 1 and the lower mold frame 2. Then, the upper mold frame 1 moves downward under the action of a hydraulic push rod (hydraulic push rod is existing technology). The return limit block 15 on the mold core 11 contacts the lower mold limit block 22 on the lower mold 2. At this time, the mold core 11 contacts the material and begins to stamp. The mold core 11 and the cavity 21 begin to close. Then, the upper mold frame 1 continues to move downward under the action of the hydraulic push rod, and then pushes the mold core 11 downward through the rectangular spring 12 and the nitrogen spring 13. When the return limit block 15 touches the return limit block 14, the product forming is completed and the product thickness reaches the theoretical thickness requirement. At the same time, the upper mold 1 drives the cutting edge insert 3 to complete the product cutting.

[0020] In this embodiment, the upper mold frame 1 is provided with four circular guides 16; Specifically, the circular guide 16 is used to limit the movement trajectory of the upper mold frame 1, thereby completing the positioning of the upper mold frame 1 and the lower mold frame 2, and thus ensuring the precise fit between the mold core 11 and the cavity 21.

[0021] In this embodiment, the lower mold frame 2 is provided with a placement frame 23, and an adjustment pad 231 is placed on the placement frame 23. The adjustment pad 231 is placed on the lower mold limiting block 22 to achieve thickness adjustment. The adjustment pad 231 is used to adjust the product thickness. By installing the adjustment pad 231 on the lower mold limiting block 15, the distance between the limiting connecting block 14 and the lower mold limiting block 22 is reduced, thereby shortening the moving distance of the upper mold frame 1, which in turn shortens the moving distance of the mold core 11, increases the distance between the top of the mold core 11 and the cavity 21, and increases the product thickness.

[0022] In this embodiment, the blade insert 3 includes a mounting bracket 31 and a die-cutting blade 32; the mounting bracket 31 is fixedly installed with the die-cutting blade 32 and the mounting bracket 31 is fixedly installed with the upper mold frame 1, and the mounting bracket 31 is provided with a slot 311; the die-cutting blade 32 is provided with a locking block 321 that cooperates with the slot 311. Specifically, the die-cutting blade 32 and the mounting bracket 31 are fixedly connected through the slot 311 and the block 321, which facilitates the replacement and maintenance of the die-cutting blade 32. The mounting bracket 31 is fixedly installed with the upper mold frame 1 and moves synchronously with the upper mold frame 1. After the mold core 11 completes the pre-pressing and forming under the action of the rectangular spring 12, the upper mold frame 1 drives the die-cutting blade 32 through the mounting bracket 31 to complete the cutting and forming of the product.

[0023] In this embodiment, the slot 311 is an L-shaped structure 312, and the front end of the card block 321 is an equilateral triangle structure 322; Specifically, during the installation of the die-cutting blade 32 and the mounting bracket 31, the hypotenuse of the equilateral triangle structure 322 at the front end of the locking block 321 makes line contact with the right angle of the L-shaped structure 312, thereby achieving the fixed installation of the die-cutting blade 32 and the mounting bracket 31. At the same time, the hypotenuse of the equilateral triangle structure 322 will generate a component force along the direction of movement of the die-cutting blade 32, thereby improving the stability of the locking block 321 and ensuring the stability of the installation of the die-cutting blade 32.

[0024] In this embodiment, the die-cutting blade 32 is a flat die-cutting blade 32; Specifically, the flat die cutter 32 has the advantages of simple structure, convenient maintenance and easy operation, which can improve the cutting efficiency of automotive interior parts and ensure cutting quality.

[0025] In use, the pre-compression shearing mold for automotive interior and exterior trim utilizes a feeding device to deliver material between the upper mold frame 1 and the lower mold frame 2. A hydraulic pusher pushes the upper mold frame 1 downwards, causing the mold core 11 to move synchronously. When the return limit block 15 on the mold core 11 contacts the lower mold limit block 22 of the lower mold frame 2, the mold core 11 and the cavity 21 begin to close, stamping the material. At this time, the upper mold frame 1 continues to move downwards under the action of the hydraulic pusher. Simultaneously, the upper mold frame 1 compresses the rectangular spring 12 and the nitrogen spring 13. Spring 13 transmits pressure to mold core 11. Mold core 11 moves downward to apply pressure to the material and maintain pressure for molding. Upper mold frame 1 continues to move downward. When upper mold frame 1 is 5mm away from lower mold frame 2, the cutting edge insert 3 just contacts the product. Upper mold frame 1 continues to move downward, pushing mold core 11 downward through rectangular spring 12 and nitrogen spring 13. When return limit block 14 on upper mold frame 1 contacts return limit block 15, mold core 11 and cavity 21 are closed. At the same time, cutting edge insert 3 follows upper mold frame 1 to complete the cutting of product, and production is completed.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-compression shearing mold for automotive interior and exterior trim, characterized in that: It includes an upper mold frame (1), a lower mold frame (2), and a cutting edge insert (3); A mold core (11) is slidably installed inside the upper mold frame (1). The upper mold frame (1) and the mold core (11) are slidably connected by a rectangular spring (12) and a nitrogen spring (13). A return limit block (14) is fixedly installed on the upper mold frame (1). A knife-edge insert (3) is fixedly installed on the upper mold frame (1). A limit connecting plate (15) is provided above the knife-edge insert (3), and the limit connecting plate (15) is fixedly connected to the mold core (11). The lower mold frame (2) is provided with a cavity (21) that cooperates with the mold core (11), and the lower mold frame (2) is provided with a lower mold limiting block (22), which is located directly below the limiting connecting plate (15).

2. The mold according to claim 1, characterized in that: The upper mold frame (1) is provided with four circular guides (16).

3. The mold according to claim 2, characterized in that: The lower mold frame (2) is provided with a placement frame (23), and an adjustment pad (231) is placed on the placement frame (23). The adjustment pad (231) is placed on the lower mold limiting block (22) to achieve thickness adjustment.

4. The mold according to claim 1, characterized in that: The blade insert (3) includes a mounting bracket (31) and a die-cutting blade (32); The mounting bracket (31) is fixedly installed with the die-cutting blade (32), and the mounting bracket (31) is fixedly installed with the upper mold frame (1). The mounting bracket (31) is provided with a slot (311). The die-cutting blade (32) is provided with a locking block (321) that cooperates with the locking slot (311).

5. The mold according to claim 4, characterized in that: The slot (311) has an L-shaped structure (312), and the front end of the card block (321) has an equilateral triangle structure (322).

6. The mold according to claim 4, characterized in that: The die-cutting blade (32) is a flat die-cutting blade (32).

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