Stamping device for bolt production

The combined design of the groove wheel and the feeding mechanism solves the problem of metal rod skewness during feeding, achieves accurate feeding and positioning of the metal rod, and improves the stamping quality and efficiency of bolt production.

CN120815870APending Publication Date: 2025-10-21HEBEI YUNCHANG FASTENER MFG CO LTD
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Patent Information

Application Number
CN202511207735.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-27
Publication Date
2025-10-21

AI Technical Summary

Technical Problem

In the prior art, metal rods are prone to tilting during the loading process, which affects the stamping effect, causes positioning deviation, mold damage and production stoppage.

Method used

The combined design of the grooved wheel mechanism and the feeding mechanism is adopted. The support plate is driven to rotate intermittently by the grooved wheel mechanism. Combined with the vibrating plate of the feeding mechanism and the gap feeding mechanism, the precise feeding and limiting of the metal rod can be achieved.

Benefits of technology

It achieves precise loading of metal rods, avoids position deviation during the loading process, improves stamping quality and production efficiency, and reduces the risk of mold damage.

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Abstract

The invention relates to the technical field of bolt stamping, and provides a stamping device for bolt production, which comprises a support frame and further comprises a support disc, stamping seats, stamping mechanisms, a grooved wheel mechanism and a feeding mechanism, the support disc is rotatably arranged on the support frame, and the four stamping seats are annularly mounted on the top side wall of the support disc at equal angles; the stamping mechanism is arranged on the supporting frame and used for stamping the metal rods in the stamping base, the grooved wheel mechanism is arranged in the supporting frame and used for driving the supporting disc to rotate intermittently, and the feeding mechanism is arranged on the supporting frame and used for feeding the metal rods into the stamping base. And the grooved wheel mechanism comprises a first cavity, a supporting column, a driving drive plate and a first motor, the first cavity is formed in the supporting frame, a grooved wheel body is rotationally arranged on the inner top wall of the first cavity, and through the technical scheme, the technical problem that in the prior art, the stamping effect is affected due to the fact that metal rods are likely to incline in the feeding process is solved.
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Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of bolt stamping, and in particular, to a stamping device for bolt production. Background Art

[0002] Stamping is a key step in bolt production. It requires precisely feeding a metal rod (a blank cut from wire) into a stamping die, where the bolt head and shank are formed through upsetting and forming processes. The accuracy of the metal rod's automatic feeding direction directly impacts stamping quality and production efficiency. If the rod's feeding direction deviates, the blank's positioning within the die can be misaligned, leading to asymmetrical bolt head formation, shank bending, and even die damage. This can necessitate machine downtime for adjustments, severely impacting continuous production.

[0003] In the existing technology, there are two main ways to realize automatic loading of metal rods: one is to use gravity and slide transportation, relying on the metal rod's own gravity to slide along the inclined slide toward the stamping seat. This method has a simple structure, but slight deformation or surface wear of the slide will cause the sliding trajectory of the metal rod to deviate, causing the direction to deviate when entering the stamping seat; the other is to use a robotic arm to grab and transfer, and the robotic arm grabs the metal rod from the material pile and places it in the stamping seat. Although the direction can be controlled to a certain extent, the movement rhythm of the robotic arm is slow, and it is difficult to adapt to the high-beat stamping requirements. In addition, if the clamping force is improper during the grabbing process, it will also cause indentation or deformation on the surface of the metal rod. In actual production, when the metal rod enters the positioning hole of the stamping seat in a non-axial direction, it will not only increase the wear rate of the positioning hole and shorten the service life of the stamping seat, but also the metal rod will be unevenly stressed during the stamping process, which is very likely to cause quality problems such as incomplete head forming and bent rod body. In severe cases, the stamping die may be damaged due to the jamming of the metal rod, causing the production line to stop. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a punching device for bolt production, which is used to solve the technical problem in the prior art that metal rods are prone to skew during the feeding process, thereby affecting the punching effect.

[0005] According to one aspect, at least one embodiment of the present invention provides a stamping device for bolt production, comprising a support frame, a support plate, a stamping seat, a stamping mechanism, a grooved wheel mechanism and a feeding mechanism, wherein the support plate is rotatably arranged on the support frame, and the top side wall of the support plate is provided with four stamping seats installed at equal angles in a ring shape, the stamping mechanism is arranged on the support frame for stamping the metal rod in the stamping seat, the grooved wheel mechanism is arranged in the support frame for driving the support plate to rotate intermittently, and the feeding mechanism is arranged on the support frame for loading the metal rod into the stamping seat.

[0006] Preferably, the sheave mechanism includes a first cavity, a support column, an active dial and a first motor, the first cavity is opened in the support frame, the inner top wall of the first cavity is rotatably provided with a sheave body, a first connecting rod is fixedly provided between the sheave body and the support plate, the support column is rotatably provided in the first cavity, the active dial coaxially and fixedly provided on the support column and matched with the sheave body, the first motor is mounted on the support frame, and the output end of the first motor is fixedly connected to the support column.

[0007] Furthermore, the feeding mechanism includes a vibration plate loader, a feeding trough, a first feeding port and a gap feeding mechanism. The vibration plate loader is arranged on one side of the support frame, and the feeding trough is arranged on the upper side of the support frame. One end of the feeding trough is connected to the output end of the vibration plate loader, and the other end of the feeding trough is sealed. The bottom side wall of the feeding trough is located on the top side of the adjacent stamping seat and is provided with the first feeding port. The gap feeding mechanism is arranged in the feeding trough for gap feeding of metal rods.

[0008] Furthermore, the gap feeding mechanism includes an adjusting cover, an adjusting block and a reciprocating mechanism. The adjusting cover is fixedly arranged on the bottom side wall of the feeding trough. The first feeding port passes through the adjusting cover. The adjusting block is slidably arranged in the adjusting cover. A second feeding port is opened on the adjusting block. The shape of the first feeding port is adapted to that of the second feeding port. The reciprocating mechanism is arranged in the adjusting cover for driving the adjusting block to move back and forth in the adjusting cover.

[0009] Furthermore, the reciprocating mechanism includes a return spring, a cam and a rotating mechanism. The return spring is fixedly arranged between the side wall of the adjusting cover and the adjusting block. The cam is rotatably arranged in the adjusting cover. The cam contacts the side wall of the adjusting block. The rotating mechanism is arranged in the support frame for driving the cam to rotate.

[0010] Based on the above scheme, the rotation mechanism includes a first gear, a second gear and a drive rod. The first gear is coaxial and fixedly arranged on the support column. The second gear is rotatably arranged in the first cavity. The second gear is meshed with the first gear. The drive rod is fixedly arranged between the second gear and the cam.

[0011] Based on the above solution, the first gear and the second gear have the same specifications.

[0012] Based on the above scheme, the stamping mechanism includes a fixed frame, a stamping head and a hydraulic rod. The L-shaped fixed frame is fixedly arranged on the support frame, the stamping head is arranged on one side of the fixed frame, the hydraulic rod is installed on the fixed frame, and the output end of the hydraulic rod is fixedly connected to the stamping head.

[0013] On the basis of the above solution, a plurality of positioning posts are fixedly provided on the top of the punch head, the positioning posts pass through the fixing frame and are slidably connected to the fixing frame, and a positioning ring is fixedly provided on the top of the plurality of positioning posts.

[0014] On the basis of the above solution, a plurality of fixing columns are fixedly arranged between the adjustment cover and the support frame.

[0015] The beneficial effects of the embodiments of the present invention are: 1. In the present invention, through the arrangement of the sheave mechanism, the operation of the first motor can drive the support column and the active dial to rotate, and at the same time, through the cooperation of the active dial and the sheave body, the support plate can be driven to rotate intermittently, thereby sequentially driving the punching seat and the metal rod in the punching seat to move to the bottom of the punching head for punching. During the punching process, the punched bolts can be removed and the empty punching seat can be loaded with metal rods; 2. In the present invention, through the setting of the feeding mechanism, the operation of the vibrating plate feeder can drive the metal rods to be arranged in the feeding trough, and after the stamping seat moves to the bottom of the first feeding port, the first feeding port and the second feeding port can be aligned by the movement of the adjusting block, so as to facilitate driving the metal rods to fall into the stamping seat through the first feeding port and the second feeding port under the action of gravity. At the same time, during the feeding process, the metal rods can be limited by the first feeding port and the second feeding port, thereby preventing the metal rods from being shifted in position during the feeding process. 3. In the present invention, through the setting of the rotating mechanism, the operation of the first motor can drive the support column to rotate all the time, and at the same time, the rotation of the support column can drive the first gear to rotate, and then the engagement of the first gear and the second gear can drive the second gear, the drive rod and the cam to rotate, so that the cam can squeeze the adjusting block to drive the adjusting block to move and realize the loading of the metal rod, and at the same time, the support column rotates one circle to realize the movement of the adjacent stamping seat to the bottom of the first discharge port, and at the same time, the support column rotates one circle to realize a single reciprocating movement of the adjusting block, thereby facilitating the precise loading of the metal rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0017] Figure 1 This is a schematic structural diagram of a punching device for bolt production according to an embodiment of the present invention; Figure 2 A schematic structural diagram of a punching device for bolt production from another perspective in one embodiment of the present invention; Figure 3 This is a schematic structural diagram of a cross-section of the feeding chute in one embodiment of the present invention; Figure 4 This is a schematic structural diagram of a cross-section of an adjustment cover in one embodiment of the present invention; Figure 5 It is a schematic structural diagram of a cross section of a cam in one embodiment of the present invention; Figure 6 It is a schematic structural diagram of a cross-section of a sheave mechanism in one embodiment of the present invention; Figure 7 A schematic structural diagram of a sheave mechanism and a rotating mechanism in one embodiment of the present invention; In the figure: 1. Support frame; 2. Support plate; 3. Punching seat; 4. First cavity; 5. Sheave body; 6. First connecting rod; 7. Support column; 8. Active dial; 9. First motor; 10. Vibrating plate loader; 11. Loading trough; 12. First discharge port; 13. Adjusting cover; 14. Adjusting block; 15. Second discharge port; 16. Return spring; 17. Cam; 18. First gear; 19. Second gear; 20. Driving rod; 21. Fixed frame; 22. Punching head; 23. Hydraulic rod; 24. Positioning column; 25. Positioning ring; 26. Fixed column. DETAILED DESCRIPTION The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0018] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0019] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0020] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0021] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] like Figure 1-Figure 7 As shown, it shows a stamping device for bolt production in one embodiment of the present invention, including a support frame 1, a support plate 2, a stamping seat 3, a stamping mechanism, a groove wheel mechanism and a feeding mechanism. The support plate 2 is rotatably arranged on the support frame 1, and four stamping seats 3 are installed at equal angles in a ring shape on the top side wall of the support plate 2. The stamping mechanism is arranged on the support frame 1 for stamping the metal rod in the stamping seat 3. The groove wheel mechanism is arranged in the support frame 1 for driving the support plate 2 to rotate intermittently. The feeding mechanism is arranged on the support frame 1 for loading the metal rod into the stamping seat 3.

[0024] Reference Figure 6 and Figure 7The sheave mechanism includes a first cavity 4, a support column 7, an active dial 8 and a first motor 9. The first cavity 4 is opened in the support frame 1, and a sheave body 5 is rotatably provided on the inner top wall of the first cavity 4. A first connecting rod 6 is fixedly provided between the sheave body 5 and the support plate 2. The support column 7 is rotatably arranged in the first cavity 4, and an active dial 8 cooperating with the sheave body 5 is coaxially and fixedly provided on the support column 7. The first motor 9 is installed on the support frame 1, and the output end of the first motor 9 is fixedly connected to the support column 7. Specifically, the work of the first motor 9 can drive the support column 7 and the active dial 8 to rotate. At the same time, the cooperation of the active dial 8 and the sheave body 5 can drive the support plate 2 to rotate intermittently, and then the stamping seat 3 and the metal rod in the stamping seat 3 can be driven to move to the bottom of the stamping head 22 for stamping. During the stamping process, the stamped bolts can be taken out and the empty stamping seat 3 can be loaded with metal rods.

[0025] Reference Figures 1-6 The feeding mechanism includes a vibration plate feeder 10, a feeding trough 11, a first feeding port 12 and a gap feeding mechanism. The vibration plate feeder 10 is arranged on one side of the support frame 1, and the feeding trough 11 is arranged on the upper side of the support frame 1. One end of the feeding trough 11 is connected to the output end of the vibration plate feeder 10, and the other end of the feeding trough 11 is sealed. The bottom side wall of the feeding trough 11 is located on the top side of the adjacent stamping seat 3 and is provided with a first feeding port 12. The gap feeding mechanism is arranged in the feeding trough 11 for gap feeding of the metal rod. The gap feeding mechanism includes an adjusting cover 13, an adjusting block 14 and a reciprocating mechanism. The adjusting cover 13 is fixedly arranged on the bottom side wall of the feeding trough 11, the first feeding port 12 passes through the adjusting cover 13, and the adjusting block 14 is slidably arranged in the adjusting cover 13. A second discharge port 15 is provided, and the first discharge port 12 is adapted to the second discharge port 15 in shape, and a reciprocating movement mechanism is arranged in the adjusting cover 13, which is used to drive the adjusting block 14 to move back and forth in the adjusting cover 13. Specifically, the metal rod can be driven to be arranged in the feeding trough 11 through the operation of the vibrating plate loader 10, and after the stamping seat 3 moves to the bottom of the first discharge port 12, the first discharge port 12 can be driven to align with the second discharge port 15 through the movement of the adjusting block 14, so as to facilitate driving the metal rod to fall into the stamping seat 3 through the first discharge port 12 and the second discharge port 15 under the action of gravity. At the same time, the metal rod can be limited by the first discharge port 12 and the second discharge port 15 during the loading process, thereby avoiding position displacement of the metal rod during the loading process.

[0026] Reference Figure 2-Figure 6The reciprocating mechanism includes a return spring 16, a cam 17 and a rotating mechanism. The return spring 16 is fixedly arranged between the side wall of the adjusting cover 13 and the adjusting block 14. The cam 17 is rotatably arranged in the adjusting cover 13. The cam 17 contacts the side wall of the adjusting block 14. The rotating mechanism is arranged in the support frame 1 and is used to drive the cam 17 to rotate. The rotating mechanism includes a first gear 18, a second gear 19 and a driving rod 20. The first gear 18 is coaxial and fixedly arranged on the support column 7. The second gear 19 is rotatably arranged in the first cavity 4. The second gear 19 is engaged with the first gear 18. A driving rod 20 is fixedly arranged between the second gear 19 and the cam 17. The specifications of the first gear 18 and the second gear 19 are the same. A plurality of fixed columns 26 are fixedly arranged between the adjustment cover 13 and the support frame 1. Specifically, the operation of the first motor 9 can drive the support column 7 to rotate all the time, and at the same time, the rotation of the support column 7 can drive the first gear 18 to rotate, and then the engagement of the first gear 18 with the second gear 19 drives the second gear 19, the drive rod 20 and the cam 17 to rotate, so that the adjustment block 14 can be squeezed by the cam 17 to drive the adjustment block 14 to move and realize the loading of the metal rod, and at the same time, the support column 7 rotates one circle to realize the movement of the adjacent stamping seat 3 to the bottom of the first discharge port 12, and at the same time, the support column 7 rotates one circle to realize the single reciprocating movement of the adjustment block 14, thereby facilitating the precise loading of the metal rod.

[0027] Reference Figure 1 and Figure 2 The stamping mechanism includes a fixed frame 21, a stamping head 22 and a hydraulic rod 23. An L-shaped fixed frame 21 is fixedly provided on the support frame 1, and the stamping head 22 is arranged on one side of the fixed frame 21. The hydraulic rod 23 is installed on the fixed frame 21, and the output end of the hydraulic rod 23 is fixedly connected to the stamping head 22. A plurality of positioning columns 24 are fixedly provided on the top of the stamping head 22. The positioning columns 24 pass through the fixed frame 21 and are slidably connected to the fixed frame 21. A positioning ring 25 is fixedly provided on the top of the plurality of positioning columns 24. Specifically, when the stamping seat 3 moves to the bottom of the stamping head 22, the stamping head 22 can be driven to move by the work of the hydraulic rod 23 and cooperate with the stamping seat 3 to stamp the metal rod. During the movement of the stamping head 22, the positioning column 24 can be used to limit the stamping head 22, thereby avoiding position displacement of the stamping head 22.

[0028] In this embodiment, when in use, the operator controls the first motor 9 to work, and the work of the first motor 9 can drive the support column 7 and the active dial 8 to rotate. At the same time, the cooperation between the active dial 8 and the groove wheel body 5 can drive the support plate 2 to rotate intermittently, and then the stamping seat 3 and the metal rod in the stamping seat 3 can be driven in turn to move to the bottom of the stamping head 22 for stamping. During the stamping process, the stamped bolts can be taken out and the empty stamping seat 3 can be loaded with metal rods. During the loading process, the work of the vibration plate loader 10 can drive the metal rods to be arranged in the loading trough 11. At the same time, the work of the first motor 9 can drive the support column 7 to rotate all the time. At the same time, the rotation of the support column 7 can drive the first gear 18 to rotate, and then the engagement of the first gear 18 with the second gear 19 drives the second gear 19, the driving rod 20 and the cam 17 to rotate, so that the adjusting block 14 can be driven to move by the squeezing of the adjusting block 14 by the cam 17. When the material is loaded, the first material port 12 and the second material port 15 can be aligned by the movement of the adjusting block 14, so that the metal rod can be driven to fall into the stamping seat 3 through the first material port 12 and the second material port 15 under the action of gravity. At the same time, the metal rod can be limited by the first material port 12 and the second material port 15 during the loading process, so as to avoid the metal rod from shifting in position during the loading process. At the same time, the support column 7 can rotate one circle to realize the movement of the similar stamping seat 3 to the bottom of the first material port 12. At the same time, the support column 7 can rotate one circle to realize a single reciprocating movement of the adjusting block 14, so as to facilitate the precise loading of the metal rod. When the stamping seat 3 moves to the bottom of the stamping head 22 after loading, the stamping head 22 can be driven to move by the work of the hydraulic rod 23 and cooperate with the stamping seat 3 to stamp the metal rod. During the movement of the stamping head 22, the positioning column 24 can be used to limit the stamping head 22, so as to avoid the stamping head 22 from shifting in position, thereby improving the stamping effect.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A punching device for bolt production, comprising a support frame (1), characterized in that: Also includes: A support plate (2), the support plate (2) being rotatably arranged on the support frame (1); Punching seat (3), four punching seats (3) are mounted on the top side wall of the support plate (2) in a circular shape at equal angles; A stamping mechanism, the stamping mechanism being arranged on the support frame (1) and being used for stamping the metal rod in the stamping seat (3); A sheave mechanism, the sheave mechanism being arranged in the support frame (1) and being used to drive the support plate (2) to perform intermittent rotation; A loading mechanism is provided on the support frame (1) and is used for loading metal rods into the punching seat (3).

2. A punching device for bolt production according to claim 1, characterized in that: The sheave mechanism comprises: A first cavity (4), the first cavity (4) being provided in the support frame (1), a sheave body (5) being rotatably provided on an inner top wall of the first cavity (4), and a first connecting rod (6) being fixedly provided between the sheave body (5) and the support plate (2); A support column (7), the support column (7) being rotatably disposed in the first cavity (4); An active dial (8), the active dial (8) coaxially and fixedly provided on the support column (7) and cooperating with the grooved wheel body (5); A first motor (9), wherein the first motor (9) is mounted on the support frame (1), and an output end of the first motor (9) is fixedly connected to the support column (7).

3. A punching device for bolt production according to claim 2, characterized in that: The feeding mechanism comprises: A vibrating plate loader (10), the vibrating plate loader (10) being arranged on one side of the support frame (1); A feeding trough (11), the feeding trough (11) is arranged on the upper side of the support frame (1), one end of the feeding trough (11) is connected to the output end of the vibration plate feeder (10), and the other end of the feeding trough (11) is sealed; A first discharge opening (12), wherein the bottom side wall of the feed trough (11) is located on the top side of the adjacent punching seat (3) and is provided with the first discharge opening (12); A gap blanking mechanism is provided in the feeding trough (11) and is used for gap blanking of metal rods.

4. A punching device for bolt production according to claim 3, characterized in that: The gap blanking mechanism comprises: An adjusting cover (13), the adjusting cover (13) being fixedly arranged on the bottom side wall of the feeding trough (11), and the first feeding port (12) passing through the adjusting cover (13); An adjusting block (14), the adjusting block (14) being slidably disposed in the adjusting cover (13), the adjusting block (14) being provided with a second discharge opening (15), the first discharge opening (12) and the second discharge opening (15) being adapted in shape; A reciprocating mechanism is provided in the adjustment cover (13) and is used to drive the adjustment block (14) to move back and forth in the adjustment cover (13).

5. A punching device for bolt production according to claim 4, characterized in that: The reciprocating mechanism comprises: a return spring (16), the return spring (16) being fixedly arranged between a side wall of the adjustment cover (13) and the adjustment block (14); A cam (17), the cam (17) being rotatably disposed in the adjustment cover (13), the cam (17) being in contact with a side wall of the adjustment block (14); A rotating mechanism is provided in the support frame (1) and is used to drive the cam (17) to rotate.

6. A punching device for bolt production according to claim 5, characterized in that: The rotating mechanism comprises: a first gear (18), the first gear (18) being coaxially and fixedly disposed on the support column (7); a second gear (19), the second gear (19) being rotatably disposed in the first cavity (4), the second gear (19) being meshed with the first gear (18); A driving rod (20) is fixedly provided between the second gear (19) and the cam (17).

7. A punching device for bolt production according to claim 6, characterized in that: The first gear (18) and the second gear (19) have the same specifications.

8. A punching device for bolt production according to claim 7, characterized in that: The stamping mechanism comprises: A fixing frame (21), wherein the L-shaped fixing frame (21) is fixedly provided on the support frame (1); A punching head (22), the punching head (22) being arranged on one side of the fixing frame (21); A hydraulic rod (23), the hydraulic rod (23) is mounted on the fixed frame (21), and the output end of the hydraulic rod (23) is fixedly connected to the punching head (22).

9. A punching device for bolt production according to claim 8, characterized in that: A plurality of positioning columns (24) are fixedly provided at the top end of the punch head (22), the positioning columns (24) pass through the fixing frame (21) and are slidably connected to the fixing frame (21), and a positioning ring (25) is fixedly provided at the top end of the plurality of positioning columns (24).

10. A punching device for bolt production according to claim 9, characterized in that: A plurality of fixing columns (26) are fixedly arranged between the adjustment cover (13) and the support frame (1).