Stamping die

Abstract

The utility model discloses a stamping die, which relates to the metal plate processing technology and is characterized by comprising an upper die and a lower die, an L-shaped block is arranged on the lower die, an abutting piece is rotatably connected onto the lower die, and a driving rod is arranged on the upper die. In the process that the upper die moves towards the lower die, the driving rod drives the abutting piece to rotate towards the L-shaped block and abut against a workpiece to limit the workpiece, deformation of the side wall of the workpiece is caused in the punching process, and the friction force between the workpiece and the L-shaped block and between the workpiece and the abutting piece is increased; the press machine drives the upper die to move along the sliding rod in the direction opposite to the lower die, at the moment, the driving rod drives the abutting piece to rotate in the direction opposite to the L-shaped block, the abutting piece does not abut against the workpiece any more, the workpiece can be taken down from the lower die by a worker, the situation that the workpiece is clamped on the lower die due to deformation is prevented, and the worker can conveniently take down the punched workpiece from the die.

Description

TECHNICAL FIELD

[0001] The utility model relates to sheet metal processing technology, more specifically, it relates to a stamping die. BACKGROUND

[0002] The stamping die is a kind of special process equipment for processing material into parts, and is particularly common in the processing of sheet metal parts, which is processed into the shape required under the action of press machine.

[0003] The Chinese patent with publication number CN220216399U discloses a side limit stamping die, and its technical points are as follows: including upper die seat, lower die seat, upper clamping plate, lower die plate and side pressure assembly, the upper clamping plate is arranged below the upper die seat, the lower die plate is arranged above the lower die seat, and the upper clamping plate faces the lower die plate;The upper clamping plate is provided with a punching punch, the lower die plate is provided with a blanking recess and a side stopper, the blanking recess is aligned with the punching punch, and the side stopper is arranged on the side of the blanking recess to block the workpiece;The side pressure assembly includes a side top piece and a side top block, the side top piece is arranged on the lower die plate, and the side top block is arranged on the upper clamping plate, the side top piece is provided with a stress end and a side top end, the stress end is aligned with the side top block, and when the upper clamping plate moves downward, the side top block pushes the stress end to slide;The side top end is aligned with the side stopper, and when the upper clamping plate moves downward, the side top end pushes the workpiece to abut against the side stopper, which solves the problem of poor abutment caused by manual pushing during punching, thereby reducing the punching precision.

[0004] However, during punching, the workpiece will also deform in the width direction, which will cause the workpiece to be stuck on the side stopper after punching is completed, so a new scheme is proposed to solve this problem. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a stamping die.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a stamping die, comprising an upper die and a lower die, a sliding rod is arranged on the lower die, the upper die can reciprocate along the sliding rod, an L-shaped block for positioning the workpiece is arranged on the lower die, a clamping piece for abutting the workpiece against the L-shaped block is rotatably connected to the lower die, a driving rod for driving the clamping piece to rotate is arranged on the upper die, when the upper die moves away from the lower die, the clamping piece rotates away from the L-shaped block and releases the positioning of the workpiece.

[0007] The utility model further sets up: the outer peripheral wall of drive rod is equipped with sliding groove, the abutting piece is equipped with the round hole that drive rod passes, the inner wall of round hole is equipped with the guide assembly that slides in sliding groove.

[0008] The utility model further sets up: sliding groove includes first straight groove, arc groove and second straight groove from top to bottom, second straight groove is equipped in the one side of drive rod back to L shaped piece, the bottom wall of second straight groove is perpendicular with the bottom wall of first straight groove, arc groove communicates first straight groove and second straight groove.

[0009] The utility model further sets up: the guide assembly includes the square that is fixed on the inner wall of round hole and the ball that is connected in the square and rolls, the ball is in contact with the bottom wall of sliding groove.

[0010] The utility model further sets up: the lower mould is equipped with the jack plug that is used for drive rod to pass, the inner peripheral wall of jack plug is equipped with ring groove, the abutting piece is equipped with the anti -drop piece that slides in ring groove.

[0011] The utility model further sets up: the side wall of abutting piece is pasted with rubber sheet, and the rubber sheet is in contact with work piece.

[0012] In conclusion, the utility model has following beneficial effect: in the process that the upper die moves towards the lower die, the side pressure assembly pushes work piece tightly on L shaped piece, drive rod drives abutting piece to rotate towards L shaped piece and is in contact with work piece, when work piece is completely limited, can guarantee the precision of punching on work piece, causes the deformation of work piece side wall in the process of punching, makes the friction between work piece and L shaped piece and abutting piece increase, when punching is completed, the press drives the upper die to move along the slide rod and moves towards the lower die, when drive rod drives abutting piece to rotate back to L shaped piece, makes abutting piece not in contact with work piece, simultaneously, the side pressure assembly also releases the limitation to work piece, so that work piece can be taken off from the lower die by worker, prevents work piece from being stuck on the lower die due to deformation, facilitates worker to take off the punched work piece from the mould. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the partial section view of the utility model;

[0014] Figure 2 It is Figure 1 The enlarged schematic view of A part in

[0015] Figure 3 It is the partial structure schematic view of the upper die in the utility model;

[0016] Figure 4 It is the structure schematic view of abutting piece in the utility model.

[0017] In the diagram: 1. Upper mold; 2. Lower mold; 3. Slide rod; 4. Shaped block; 5. Clamping part; 6. Drive rod; 7. Round hole; 8. First straight groove; 9. Arc groove; 10. Second straight groove; 11. Square block; 12. Ball bearing; 13. Insertion hole; 14. Annular groove; 15. Anti-detachment part. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] A stamping die, such as Figure 1 As shown, the die includes an upper die 1 and a lower die 2. The lower die 2 is equipped with a slide bar 3, allowing the upper die 1 to reciprocate along the slide bar 3. The lower die 2 has an L-shaped block 4 for positioning the workpiece, and a side-pressing assembly for pushing the workpiece slides on it. A clamping member 5 is rotatably connected to the lower die 2 to press the workpiece against the L-shaped block 4. The upper die 1 has a drive rod 6 for rotating the clamping member 5. When the upper die 1 moves away from the lower die 2, the clamping member 5 rotates away from the L-shaped block 4, releasing its restriction on the workpiece. When using this stamping die, the worker first places the workpiece on the lower die 2, ensuring the two sidewalls of the workpiece are against the L-shaped block 4. Then, the press is started, causing the press to push the upper die 1 to reciprocate along the slide bar 3. During the process of the upper die 1 moving towards the lower die 2… In the process, the side pressure assembly pushes the workpiece tightly onto the L-shaped block 4. The drive rod 6 drives the clamping part 5 to rotate toward the L-shaped block 4 and come into contact with the workpiece. At this time, the workpiece is completely limited, which can ensure the accuracy of punching on the workpiece. During the punching process, the deformation of the side wall of the workpiece is caused, which increases the friction between the workpiece and the L-shaped block 4 and the clamping part 5. After the punching is completed, the press drives the upper die 1 to move along the slide rod 3 in the direction away from the lower die 2. At this time, the drive rod 6 drives the clamping part 5 to rotate away from the L-shaped block 4, so that the clamping part 5 no longer comes into contact with the workpiece. Simultaneously, the side pressure assembly also releases the limitation on the workpiece, so that the workpiece can be removed from the lower die 2 by the worker, preventing the workpiece from getting stuck on the lower die 2 due to deformation, and making it easier for the worker to remove the punched workpiece from the mold.

[0020] like Figures 1 to 4As shown, the outer peripheral wall of the driving rod 6 is provided with a sliding groove, the abutting piece 5 is provided with a circular hole 7 through which the driving rod 6 passes, the inner wall of the circular hole 7 is provided with a guide assembly sliding in the sliding groove, in the process of reciprocating movement of the upper die 1, the guide assembly can slide along the sliding groove, thereby driving the abutting piece 5 to rotate, completing the limiting or releasing of the workpiece, this mode makes the movement of the upper die 1 synchronous with the movement of the abutting piece 5, avoiding the increase of additional power source, and also making the abutting piece 5 provide the limiting function for the workpiece in time, the sliding groove sequentially comprises a first straight groove 8, an arc-shaped groove 9 and a second straight groove 10 from top to bottom, the second straight groove 10 is provided on the side of the driving rod 6 away from the L-shaped block 4, the bottom wall of the second straight groove 10 is perpendicular to the bottom wall of the first straight groove 8, the arc-shaped groove 9 communicates the first straight groove 8 and the second straight groove 10, the connecting part of the arc-shaped groove 9 and the first straight groove 8 is provided with a smooth surface, and the connecting part of the arc-shaped groove 9 and the second straight groove 10 is also provided with a smooth surface, in the process of reciprocating movement of the driving rod 6, when the guide assembly slides in the first straight groove 8, the abutting piece 5 abuts against the workpiece and limits the workpiece, when the guide assembly enters the arc-shaped groove 9 from the first straight groove 8, the abutting piece 5 rotates away from the L-shaped block 4 and releases the limiting of the workpiece, when the guide assembly is located in the second straight groove 10, the abutting piece 5 is kept in the position not contacting the workpiece, facilitating the workers to take and place the workpiece, the guide assembly comprises a square block 11 fixed on the inner wall of the circular hole 7 and a ball 12 rolling connected in the square block 11, the ball 12 abuts against the bottom wall of the sliding groove, the square block 11 is provided with a superior arc-shaped groove, the ball 12 is contained in the superior arc-shaped groove, the setting of the ball 12 makes the friction form between the guide assembly and the bottom wall of the sliding groove rolling friction, which can reduce the abrasion of the bottom wall of the sliding groove, make the sliding process of the guide assembly in the sliding groove relatively smooth, and reduce the vibration generated in the rotating process of the abutting piece 5, the lower die 2 is provided with a plug hole 13 through which the driving rod 6 passes, the inner peripheral wall of the plug hole 13 is provided with a ring groove 14, the abutting piece 5 is provided with an anti-disengagement piece 15 sliding in the ring groove 14, in the rotating process of the abutting piece 5, the anti-disengagement piece 15 rotates in the ring groove 14 synchronously, so that the abutting piece 5 can always rotate on the lower die 2, which can prevent the abutting piece 5 from disengaging from the lower die 2, the side wall of the abutting piece 5 is pasted with a rubber sheet, the rubber sheet abuts against the workpiece, the setting of the rubber sheet makes the contact surface between the abutting piece 5 and the workpiece relatively soft, which can prevent the influence on the surface of the workpiece when the abutting piece 5 and the workpiece contact hard, and can better protect the side wall of the workpiece.

[0021] The preferred embodiments of the present application have been described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application are also regarded as the protection scope of the present application.

Claims

1. A punch-die comprising an upper die (1) and a lower die (2), characterized in that: The lower die (2) is provided with a slide bar (3), the upper die (1) can reciprocate along the slide bar (3), the lower die (2) is provided with an L-shaped block (4) for positioning the workpiece, the lower die (2) is rotatably connected with a pressing member (5) for pressing the workpiece against the L-shaped block (4), the upper die (1) is provided with a driving rod (6) for driving the pressing member (5) to rotate, when the upper die (1) moves away from the lower die (2), the pressing member (5) rotates away from the L-shaped block (4) and releases the limitation of the workpiece.

2. A stamping die according to claim 1, wherein: The outer peripheral wall of the driving rod (6) is provided with a sliding groove, the pressing member (5) is provided with a circular hole (7) through which the driving rod (6) passes, and the inner wall of the circular hole (7) is provided with a guide assembly sliding in the sliding groove.

3. A stamping die according to claim 2, wherein: The sliding groove sequentially comprises a first straight groove (8), an arc-shaped groove (9) and a second straight groove (10) from top to bottom, the second straight groove (10) is arranged on the side of the driving rod (6) away from the L-shaped block (4), the bottom wall of the second straight groove (10) is perpendicular to the bottom wall of the first straight groove (8), and the arc-shaped groove (9) communicates the first straight groove (8) and the second straight groove (10).

4. A stamping die according to claim 3, wherein: The guide assembly comprises a square block (11) fixed on the inner wall of the circular hole (7) and a plurality of rolling balls (12) rolling in the square block (11), and the rolling balls (12) abut against the bottom wall of the sliding groove.

5. A stamping die according to claim 4, wherein: The lower die (2) is provided with a plug hole (13) through which the driving rod (6) passes, the inner peripheral wall of the plug hole (13) is provided with an annular groove (14), and the pressing member (5) is provided with an anti-disengagement member (15) sliding in the annular groove (14).

6. A stamping die according to claim 5, wherein: The side wall of the pressing member (5) is attached with a rubber sheet, and the rubber sheet abuts against the workpiece. The side wall of the pressing member (5) is attached with a rubber sheet, and the rubber sheet abuts against the workpiece.

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