Reshaping die for tail position of top cover outer plate

Abstract

The utility model belongs to the technical field of dies, and particularly relates to a top cover outer plate tail position shaping die which comprises an upper die base and a lower die base, a wedge mechanism and a pulley assembly are arranged between the upper die base and the lower die base, a material pressing plate is installed on the upper die base, a side shaping upper cutter block is installed on the wedge mechanism, a lower die core and a side shaping lower cutter block are arranged on the lower die base, and the pulley assembly is arranged on the lower die base. The upper die base is provided with a front trimming cutter block, the front trimming cutter block is located between the material pressing plate and the side trimming upper cutter block, the pulley assembly comprises a pulley, an upper driving block and a first air cylinder, the lower die base is provided with a second air cylinder, and after the upper die base moves downwards by a certain distance, the upper driving block makes contact with the pulley and drives the pulley to move, and the side trimming lower cutter block is pushed to move obliquely and upwards; when the upper die base moves upwards, the tackle resets under the action of the first air cylinder, and the side shaping lower cutter block resets obliquely downwards under the action of the second air cylinder. The pulley is reset through the first air cylinder, the side trimming lower cutter block is reset through the second air cylinder, operation is stable, vibration is small, and noise is low.

Description

Technical Field:

[0001] The utility model belongs to the technical field of molds, and particularly refers to a shaping mold for the tail position of the outer panel of the roof cover. Background Art:

[0002] The structure of the outer panel of the car roof cover, as Figure 1 shown, due to the need to avoid the opening and closing space of the tailgate, the tail position of the outer panel of the roof cover is designed as a negative angle, so it is necessary to perform a side shaping process on the tail of the outer panel of the roof cover to form a negative angle.

[0003] The Chinese utility model patent (publication number CN221064051U, application date September 14, 2023, publication date June 4, 2024) discloses a side shaping stamping mold for the tail of the outer panel of the car roof cover, which includes an upper die base, a lower die base, a swaging mechanism and a pulley block therebetween. A blank holder is installed on the upper die base, a lower die insert is arranged on the lower die base, a side shaping upper insert is installed on the swaging mechanism, a side shaping lower insert is installed on the pulley block, and a side shaping parting line penetrating the width direction of the plate part is formed after the side shaping upper insert, the side shaping lower insert and the lower die insert are in contact.

[0004] The deficiency of the above-mentioned side shaping stamping mold for the tail of the outer panel of the car roof cover is that during the shaping process, there will be a "blank" area where local blank holding cannot be carried out at the negative angle shaping part of the tail of the outer panel of the roof cover, and the problem of upper convex wrinkles will occur in this area. Summary of the Invention:

[0005] The purpose of the utility model is to provide a shaping mold for the tail position of the outer panel of the roof cover, which can effectively prevent the problem of upper convex wrinkles at the negative angle shaping part of the outer edge tail of the roof cover.

[0006] The utility model is realized as follows:

[0007] A shaping mold for the tail position of the outer panel of the roof cover includes an upper die base and a lower die base. A swaging mechanism and a pulley assembly are arranged between the upper die base and the lower die base. A blank holder is installed on the upper die base. A side shaping upper blade is installed on the swaging mechanism. A lower die insert for cooperating with the blank holder to hold the material and a side shaping lower blade for moving obliquely and cooperating with the side shaping upper blade for shaping are arranged on the lower die base. A positive shaping blade is installed on the upper die base, and the positive shaping blade is located between the blank holder and the side shaping upper blade. The pulley assembly includes a pulley slidably arranged on the lower die base in the horizontal direction, an upper driving block installed on the upper die base, and a cylinder I for resetting the pulley. A cylinder II for resetting the side shaping lower blade obliquely downward is arranged on the lower die base. When the upper die base moves down a certain distance, the upper driving block contacts the pulley and drives the pulley to move, pushing the side shaping lower blade to move obliquely upward. When the upper die base moves up, the pulley is reset under the action of the cylinder I, and the side shaping lower blade is reset obliquely downward under the action of the cylinder II.

[0008] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, the upper driving block and the first cylinder are respectively arranged at both ends of the sliding carriage, and the second cylinder is arranged below the side trimming lower cutter block and there are two of them.

[0009] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, a plurality of positive trimming cutter blocks are arranged along the width direction of the outer panel of the top cover, and two adjacent positive trimming cutter blocks are next to each other.

[0010] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, an installation strip is provided on the upper die base, and an installation notch adapted to the positive trimming cutter block is provided at the lower end of the installation strip. The installation notch includes a horizontal plane and a vertical plane. The upper surface of the positive trimming cutter block abuts and is limited by the horizontal plane, and one side surface of the positive trimming cutter block abuts and is limited by the vertical plane.

[0011] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, the second cylinder is fixedly installed on the lower die base in an inclined manner through a first bracket. A first sleeve is installed on the piston rod of the second cylinder. A connecting component is installed on the side trimming lower cutter block, and the first sleeve is axially limited on the connecting component.

[0012] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, the connecting component includes a first limiting block with a U-shaped notch. The U-shaped notch is in a stepped shape. The first sleeve is arranged in the U-shaped notch and is in a stepped shape that contracts towards the side of the second cylinder. A second limiting block is arranged on the side of the first limiting block away from the second cylinder. The first sleeve is axially limited between the second limiting block and the U-shaped notch, and the second limiting block is installed on the side trimming lower cutter block.

[0013] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, two assembly blocks are provided on the side trimming lower cutter block, and the two assembly blocks are respectively located on the left and right sides of the first limiting block. The two ends of the second limiting block are respectively installed on the corresponding assembly blocks.

[0014] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, a screw passes through the first limiting block and is screwed to the second limiting block, and the screw passes through the second limiting block and is screwed to the assembly block.

[0015] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, the first cylinder is installed on the lower die base. A second sleeve is installed on the piston rod of the first cylinder. A limiting component is provided on the sliding carriage, and the second sleeve is axially limited on the limiting component.

[0016] In the above-mentioned shaping die for the tail position of the outer panel of the top cover, the limiting component includes an installation block installed on the sliding carriage. An installation hole for the second sleeve to extend into is provided on the installation block. The axial direction of the installation hole is parallel to the moving direction of the sliding carriage. The second sleeve is in a stepped shape that contracts towards the side of the first cylinder. A limiting plate that abuts and is limited by the stepped surface of the second sleeve is inserted into the installation block.

[0017] In the above-mentioned trimming die for the tail position of the outer panel of the roof cover, the mounting hole is a through hole, and the outer end of the second sleeve abuts against the pulley for limiting.

[0018] In the above-mentioned trimming die for the tail position of the outer panel of the roof cover, a U-shaped groove adapted to the second sleeve is formed on the limiting plate, and a baffle for preventing the limiting plate from coming out is provided on the mounting block.

[0019] In the above-mentioned trimming die for the tail position of the outer panel of the roof cover, the screw passes through the mounting block and is screwed to the pulley.

[0020] In the above-mentioned trimming die for the tail position of the outer panel of the roof cover, a driving seat matched with the lower end of the inclined wedge mechanism is provided on the lower die base, and the driving seat and the lower die base are of an integral structure.

[0021] In the above-mentioned trimming die for the tail position of the outer panel of the roof cover, a lower driving block matched with the upper driving block is provided on the pulley. On the lower end of the side of the upper driving block close to the lower driving block, there is a first inclined surface inclined outward from bottom to top. On the upper end of the side of the lower driving block close to the upper driving block, there is a second inclined surface inclined outward from top to bottom. The upper driving block pushes the lower driving block to move through the cooperation of the first inclined surface and the second inclined surface.

[0022] In the above-mentioned trimming die for the tail position of the outer panel of the roof cover, a lower pushing block is provided on the pulley, and an upper pushing block is provided on the side trimming lower knife block. On one end of the side of the lower pushing block close to the upper pushing block, there is a third inclined surface gradually inclined upward from the end to the middle. On one end of the side of the upper pushing block close to the lower pushing block, there is a fourth inclined surface gradually inclined downward from the end to the middle. The lower pushing block pushes the upper pushing block to move obliquely upward through the cooperation of the third inclined surface and the fourth inclined surface.

[0023] The prominent advantages of the present utility model compared with the prior art are:

[0024] 1. The present utility model is provided with a positive trimming knife block between the blank holding plate and the side trimming upper knife block. During the trimming process, the positive trimming knife block presses the negative angle molding position at the tail of the outer panel of the roof cover to prevent upper convex wrinkles from appearing in this area. The pulley of the present utility model is reset by the first cylinder, and the side trimming lower knife block is reset by the second cylinder, with stable operation, small vibration and low noise.

[0025] 2. The connecting component of the present utility model includes a first limiting block with a U-shaped notch. The U-shaped notch is in a stepped shape. The first sleeve is arranged in the U-shaped notch and is in a stepped shape that contracts towards the side of the second cylinder. A second limiting block is provided on the side of the first limiting block away from the second cylinder. The first sleeve is axially limited between the second limiting block and the U-shaped notch. The second limiting block is installed on the side trimming lower knife block, with a simple structure and being convenient for processing and installation.

[0026] 3. The limiting component of the present utility model includes a mounting block installed on the pulley. An installation hole for the second sleeve to extend into is provided on the mounting block, and the axial direction of the installation hole is parallel to the moving direction of the pulley. The second sleeve is in a stepped shape that contracts towards the side of the first cylinder. A limiting plate that abuts against the stepped surface of the second sleeve is inserted into the mounting block, with a simple structure, facilitating processing and installation.

[0027] 4. A U-shaped groove adapted to the second sleeve is formed on the limiting plate of the present utility model, and a baffle for preventing the limiting plate from coming out is provided on the mounting block, facilitating the installation of the limiting plate and effectively preventing the limiting plate from coming out. Description of the Drawings:

[0028] Figure 1 is a perspective view of the outer top plate of the present utility model;

[0029] Figure 2 is a perspective view of the present utility model;

[0030] Figure 3 is a cross-sectional view of the present utility model;

[0031] Figure 4 is a perspective view of the pulley assembly, side trimming lower tool block and the second cylinder of the present utility model Figure 1 ;

[0032] Figure 5 is a perspective view of the pulley assembly, side trimming lower tool block and the second cylinder of the present utility model Figure 2 ;

[0033] Figure 6 is a perspective view of the installation structure of the second cylinder of the present utility model;

[0034] Figure 7 is an exploded view of the installation structure of the second cylinder of the present utility model;

[0035] Figure 8 is a perspective view of the installation structure of the first cylinder of the present utility model;

[0036] Figure 9 is an exploded view of the installation structure of the first cylinder of the present utility model.

[0037] Reference numerals: 1, upper die base; 2, lower die base; 3, angle wedge mechanism; 4, blank holder; 5, side trimming upper tool block; 6, lower die insert; 7, side trimming lower tool block; 8, straight trimming tool block; 9, trolley; 10, upper driving block; 11, cylinder 1; 12, cylinder 2; 13, mounting strip; 14, bracket 1; 15, sleeve 1; 16, U-shaped notch; 17, limit block 1; 18, limit block 2; 19, sleeve 2; 20, mounting block; 21, mounting hole; 22, limit plate; 23, U-shaped groove; 24, baffle; 25, driving seat; 26, assembly block; 27, lower driving block; 28, lower pushing block; 29, upper pushing block. Detailed implementation manner:

[0038] The following further describes the present utility model with specific embodiments, see Figure 1 -9:

[0039] A trimming die for the tail position of the outer panel of the top cover, comprising an upper die base 1 and a lower die base 2. An angle wedge mechanism 3 and a trolley assembly are provided between the upper die base 1 and the lower die base 2. A blank holder 4 is installed on the upper die base 1. A side trimming upper tool block 5 is installed on the angle wedge mechanism 3. A lower die insert 6 that cooperates with the blank holder 4 for blank holding and a side trimming lower tool block 7 that moves obliquely and cooperates with the side trimming upper tool block 5 for trimming are arranged on the lower die base 2. A straight trimming tool block 8 is installed on the upper die base 1. The straight trimming tool block 8 is located between the blank holder 4 and the side trimming upper tool block 5. The trolley assembly includes a trolley 9 that slides horizontally on the lower die base 2, an upper driving block 10 installed on the upper die base 1, and a cylinder 1 11 for resetting the trolley 9. A cylinder 2 12 for resetting the side trimming lower tool block 7 obliquely downward is provided on the lower die base 2. When the upper die base 1 moves downward a certain distance, the upper driving block 10 contacts the trolley 9 and drives the trolley 9 to move, pushing the side trimming lower tool block 7 to move obliquely upward; when the upper die base 1 moves upward, the trolley 9 is reset under the action of the cylinder 1 11, and the side trimming lower tool block 7 is reset obliquely downward under the action of the cylinder 2 12.

[0040] Working principle of the present utility model: As Figures 1 - 9 shown, the upper die base 1 moves downward, driving the blank holder 4 and the straight trimming tool block 8 to move downward. The side trimming upper tool block 5 moves obliquely downward under the action of the angle wedge mechanism 3. When moving downward a certain distance, the upper driving block 10 contacts the trolley 9, pushing the trolley 9 to move, and then pushing the side trimming lower tool block 7 to move obliquely upward; after trimming is completed, the upper die base 1 moves upward, driving the blank holder 4 and the straight trimming tool block 8 to move upward. The side trimming upper tool block 5 is reset obliquely upward under the action of the angle wedge mechanism 3. The trolley 9 slides and resets under the action of the cylinder 1 11, and the side trimming lower tool block 7 is reset obliquely downward under the action of the cylinder 2 12.

[0041] As Figure 3As shown in the figure, a positive trimming blade 8 is provided between the blank holding plate 4 and the side trimming upper blade block 5. During the trimming process, the positive trimming blade 8 presses on the negative angle of the tail of the outer panel of the top cover, preventing upper convex wrinkles from occurring in this area. The trolley 9 of the present utility model is reset by the first cylinder 11, and the side trimming lower blade block 7 is reset by the second cylinder 12, with stable operation, low vibration and low noise.

[0042] Furthermore, the upper drive block 10 and the first cylinder 11 are respectively arranged at both ends of the trolley 9, and the second cylinder 12 is arranged below the side trimming lower blade block 7 and there are two of them.

[0043] In order to facilitate the processing of the positive trimming blade 8, a plurality of positive trimming blades 8 are arranged along the width direction of the outer panel of the top cover, and two adjacent positive trimming blades 8 are next to each other.

[0044] Installation structure of the positive trimming blade 8: As Figure 3 shown, an installation strip 13 is provided on the upper die base 1, and an installation notch adapted to the positive trimming blade 8 is provided at the lower end of the installation strip 13. The installation notch includes a horizontal plane and a vertical plane. The upper surface of the positive trimming blade 8 abuts against the horizontal plane for limiting, and one side surface of the positive trimming blade 8 abuts against the vertical plane for limiting. The horizontal plane and the vertical plane are set for positioning, which is convenient for installation.

[0045] Installation structure of the second cylinder 12: As Figures 4 - 7 shown, the second cylinder 12 is fixedly installed on the lower die base 2 obliquely through the first bracket 14. A sleeve 15 is installed on the piston rod of the second cylinder 12. A connecting component is installed on the side trimming lower blade block 7. The sleeve 15 is axially limited on the connecting component, and there is no requirement for the circumferential position of the piston rod of the second cylinder 12, avoiding the inability to connect the piston rod of the second cylinder 12 with the side trimming lower blade block 7 after installing the second cylinder 12.

[0046] In this embodiment, there are two first brackets 14, which are respectively located at the upper and lower ends of the second cylinder 12, and the piston rod of the second cylinder 12 extends and retracts obliquely upward.

[0047] Structure of the connecting component: The connecting component includes a first limiting block 17 with a U-shaped notch 16. The U-shaped notch 16 is stepped. The sleeve 15 is arranged in the U-shaped notch 16 and is stepped and contracted towards the second cylinder 12. A second limiting block 18 is provided on the side of the first limiting block 17 away from the second cylinder 12. The sleeve 15 is axially limited between the second limiting block 18 and the U-shaped notch 16, and the second limiting block 18 is installed on the side trimming lower blade block. The structure is simple, which is convenient for processing and installation.

[0048] Installation structure of the second limiting block 18 and the side trimming lower cutter block 7: Two assembly blocks 26 are provided on the side trimming lower cutter block 7, and the two assembly blocks 26 are respectively located on the left and right sides of the first limiting block 17, and both ends of the second limiting block 18 are respectively installed on the corresponding assembly blocks 26.

[0049] Installation structure of the second limiting block 18: The screw passes through the first limiting block 17 and is screwed to the second limiting block 18, and the screw passes through the second limiting block 18 and is screwed to the assembly block 26.

[0050] Installation structure of the first cylinder 11: As shown in Figure 4 , 5 , 8, and 9, the first cylinder 11 is installed on the lower die base 2, a sleeve two 19 is installed on the piston rod of the first cylinder 11, a limiting component is provided on the sliding block 9, and the sleeve two 19 is axially limited on the limiting component, and there is no requirement for the circumferential position of the piston rod of the first cylinder 11, avoiding the inability to connect the piston rod of the first cylinder 11 and the sliding block 9 after installing the first cylinder 11.

[0051] Structure of the limiting component: The limiting component includes an installation block 20 installed on the sliding block 9. An installation hole 21 for the sleeve two 19 to extend into is provided on the installation block 20. The axial direction of the installation hole 21 is parallel to the moving direction of the sliding block 9. The sleeve two 19 is a stepped shape that contracts towards the first cylinder 11 side, and a limiting plate 22 that abuts and limits with the stepped surface of the sleeve two 19 is inserted into the installation block 20. The structure is simple and convenient for processing and installation.

[0052] Furthermore, the installation hole 21 is a through hole, and the outer end of the sleeve two 19 abuts and limits with the sliding block 9.

[0053] For the convenience of installing the limiting plate 22 and preventing the limiting plate 22 from coming out, a U-shaped groove 23 adapted to the sleeve two 19 is opened on the limiting plate 22, and a baffle 24 for preventing the limiting plate 22 from coming out is provided on the installation block 20.

[0054] Installation structure of the installation block 20: The screw passes through the installation block 20 and is screwed to the sliding block 9.

[0055] Furthermore, a driving seat 25 that cooperates with the lower end of the wedge mechanism 3 is provided on the lower die base 2. The driving seat 25 and the lower die base 2 are of an integral structure, which does not require installation and has high strength.

[0056] The driving structure for the upper die holder 1 to push the pulley 9: A lower driving block 27 that cooperates with the upper driving block 10 is provided on the pulley 9. At the lower end of the side surface of the upper driving block 10 close to the lower driving block 27, there is a first inclined surface that slopes outward from bottom to top and from inside to outside. At the upper end of the side surface of the lower driving block 27 close to the upper driving block 10, there is a second inclined surface that slopes outward from top to bottom and from inside to outside. The upper driving block 10 pushes the lower driving block 27 to move through the cooperation of the first inclined surface and the second inclined surface. When the upper driving block 10 contacts the lower driving block 27, the first inclined surface contacts the second inclined surface. As the upper driving block 10 moves downward, the lower driving block 27 moves to the side away from the upper driving block 10 under the action of the first inclined surface and the second inclined surface.

[0057] The driving structure for the pulley 9 to push the side trimming lower tool block 7: A lower pushing block 28 is provided on the pulley 9, and an upper pushing block 29 is provided on the side trimming lower tool block 7. At one end of the side surface of the lower pushing block 28 close to the upper pushing block 29, there is a third inclined surface that gradually slopes upward from the end to the middle. At one end of the side surface of the upper pushing block 29 close to the lower pushing block 28, there is a fourth inclined surface that gradually slopes downward from the end to the middle. The lower pushing block 28 pushes the upper pushing block 29 to move obliquely upward through the cooperation of the third inclined surface and the fourth inclined surface. When the pulley 9 moves to the side away from the upper driving block 10, the third inclined surface contacts the fourth inclined surface. As the pulley 9 moves, the side trimming lower tool block 7 moves obliquely upward under the action of the third inclined surface and the fourth inclined surface.

[0058] The above embodiments are only one of the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the shape, structure, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A die for shaping the tail position of the outer panel of the top cover, comprising an upper die base (1) and a lower die base (2). An inclined wedge mechanism (3) and a pulley assembly are provided between the upper die base (1) and the lower die base (2). A blank holder (4) is installed on the upper die base (1). A side trimming upper cutter block (5) is installed on the inclined wedge mechanism (3). A lower die insert (6) for cooperating with the blank holder (4) to press the material and a side trimming lower cutter block (7) for moving obliquely and cooperating with the side trimming upper cutter block (5) for shaping are arranged on the lower die base (2). It is characterized in that: A positive trimming blade block (8) is installed on the upper die base (1). The positive trimming blade block (8) is located between the blank holding plate (4) and the side trimming upper blade block (5). The trolley assembly includes a trolley (9) slidably arranged on the lower die base (2) in the horizontal direction, an upper driving block (10) installed on the upper die base (1), and a first cylinder (11) for resetting the trolley (9). A second cylinder (12) for resetting the side trimming lower blade block (7) obliquely downward is provided on the lower die base (2). After the upper die base (1) moves downward by a certain distance, the upper driving block (10) contacts the trolley (9) and drives the trolley (9) to move, pushing the side trimming lower blade block (7) to move obliquely upward. When the upper die base (1) moves upward, the trolley (9) is reset under the action of the first cylinder (11), and the side trimming lower blade block (7) is reset obliquely downward under the action of the second cylinder (12).

2. The trimming die for the tail position of the outer panel of the top cover according to claim 1, characterized in that: A plurality of positive trimming blade blocks (8) are arranged along the width direction of the outer panel of the top cover, and two adjacent positive trimming blade blocks (8) are adjacent to each other.

3. A trimming die for the tail position of the outer panel of the top cover according to claim 1, characterized in that: An installation strip (13) is provided on the upper die base (1). An installation notch adapted to the positive trimming blade block (8) is provided at the lower end of the installation strip (13). The installation notch includes a horizontal plane and a vertical plane. The upper surface of the positive trimming blade block (8) abuts against and is limited by the horizontal plane, and one side surface of the positive trimming blade block (8) abuts against and is limited by the vertical plane.

4. A top cover outer panel tail position shaping die according to claim 1, characterized in that: The second cylinder (12) is fixedly installed on the lower die base (2) obliquely through a first bracket (14). A first sleeve (15) is installed on the piston rod of the second cylinder (12). A connection assembly is installed on the side trimming lower blade block (7), and the first sleeve (15) is axially limited on the connection assembly.

5. A top cover outer panel tail position shaping die according to claim 4, characterized in that: The connection assembly includes a first limiting block (17) having a U-shaped notch (16). The U-shaped notch (16) is stepped. The first sleeve (15) is arranged in the U-shaped notch (16) and is stepped and contracted toward the side of the second cylinder (12). A second limiting block (18) is provided on the side of the first limiting block (17) away from the second cylinder (12). The first sleeve (15) is axially limited between the second limiting block (18) and the U-shaped notch (16), and the second limiting block (18) is installed on the side trimming lower blade block (7).

6. A shaping die for the tail position of the outer panel of the top cover according to claim 1, characterized in that: The first cylinder (11) is installed on the lower die base (2). A second sleeve (19) is installed on the piston rod of the first cylinder (11). A limiting assembly is provided on the trolley (9), and the second sleeve (19) is axially limited on the limiting assembly.

7. A trimming die for the tail part of the outer panel of the top cover according to claim 6, characterized in that: The limiting assembly includes an installation block (20) installed on the trolley (9). An installation hole (21) for the second sleeve (19) to extend into is provided on the installation block (20). The axial direction of the installation hole (21) is parallel to the moving direction of the trolley (9). The second sleeve (19) is stepped and contracted toward the side of the first cylinder (11). A limiting plate (22) that abuts against and is limited by the stepped surface of the second sleeve (19) is inserted into the installation block (20).

8. A trimming die for the tail part of the outer panel of the top cover according to claim 7, characterized in that: A U-shaped groove (23) adapted to the second sleeve (19) is provided on the limiting plate (22). A baffle (24) for preventing the limiting plate (22) from coming out is provided on the installation block (20).

9. A trimming die for the tail position of the outer panel of the top cover according to claim 1, characterized in that: A driving seat (25) which is matched with the lower end of the inclined wedge mechanism (3) is arranged on the lower die base (2), and the driving seat (25) and the lower die base (2) are of an integral structure.

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