Steel plate row-up tapping machine
By introducing a limiting structure and a clamping structure into the steel plate row punching machine, the problem of steel plate displacement during the punching process is solved, achieving higher punching accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-17
AI Technical Summary
Existing stamping punching machines lack limiting devices during the punching process of steel plates, resulting in steel plate displacement and low punching accuracy.
A steel plate row drilling machine was designed, which adopts a limiting structure and a clamping structure, including a drive component, a limiting plate, a clamping plate and a guide rod. The drive component controls the limiting plate to center and limit the steel plate, and the clamping structure ensures that the steel plate remains stable during the drilling process.
It improves the precision of drilling steel plates, ensuring that the steel plates do not shift during the drilling process, thus enhancing the stability and accuracy of drilling.
Smart Images
Figure CN223997069U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hole-opening equipment technology, and in particular to a steel plate row hole-opening machine. Background Technology
[0002] Currently, a stamping punching machine is a specialized piece of equipment that rapidly forms holes on the surface of materials through a stamping process. It mainly utilizes the cooperation of a mold and a pressure mechanism to achieve efficient hole opening. Its working principle is as follows: the punch is driven to press down at high speed through a power system (such as hydraulic, pneumatic, or mechanical transmission), so that the material between the punch and the die is subjected to strong pressure in an instant, thereby being sheared or extruded to form a hole of a preset shape.
[0003] Existing stamping punching machines typically require manual pushing of steel plates or conveyor belt transport to the punching position of the punching machine to perform the punching operation.
[0004] The existing technical solutions mentioned above have the following drawbacks: the existing solutions rely on conveyor belts and manual labor for conveying, and since no limiting device is set, there is a problem that the steel plate will shift during the drilling operation, resulting in low drilling accuracy. Utility Model Content
[0005] In order to improve the drilling accuracy, this application provides a steel plate row drilling machine.
[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:
[0007] A steel plate row punching machine includes a support frame placed on the ground. The upper surface of the support frame is divided into a punching section, a feeding section, and a discharging section. The punching section is located between the feeding section and the discharging section and is used to punch steel plates that enter the machine body through the feeding section. The bottom wall of the feeding section is provided with a limiting structure, which includes a drive assembly and two limiting plates. The two limiting plates are respectively located on opposite sides of the feeding section in the width direction. The drive assembly is located on the bottom wall of the feeding section and is connected to both limiting plates. The drive assembly is used to control the two limiting plates to move closer or further apart along the surface of the feeding section. The height of the limiting plates is higher than the upper surface of the feeding section, and the limiting plates are used to limit the two sides of the steel plates.
[0008] Furthermore, the bottom wall of the unloading section is connected to a sinking trough, which is arranged along the width direction of the loading section. The drive assembly is disposed within the sinking trough. The drive assembly includes a bidirectional lead screw and a drive component. The axis of the bidirectional lead screw is arranged along the width direction of the loading section. The two ends of the bidirectional lead screw are rotatably connected to the two inner walls opposite to the sinking trough. The drive component is disposed on the side wall of the sinking trough. The output end of the drive component passes through the side wall of the sinking trough and is fixedly connected to one end of the bidirectional lead screw. The fixed end of the drive component is fixedly connected to the side wall of the sinking trough. The two limiting plates are respectively threaded onto the two opposite threads of the bidirectional lead screw, and the two limiting plates are symmetrically arranged. A groove is opened on the surface of the loading section along the axis direction of the bidirectional lead screw, and each limiting plate protrudes through the groove to the surface of the loading plate.
[0009] Furthermore, the chute is located in the middle of the feeding section, and the surface of the feeding section is symmetrically provided with several linkage grooves on both sides with the chute as the center. There is a gap between adjacent linkage grooves, and each linkage groove is parallel to the chute. Each linkage groove has a first linkage block and a second linkage block slidably connected on both sides. Several first linkage blocks are fixedly connected to one of the limiting plates through a first connecting rod, and several second linkage blocks are fixedly connected to another limiting plate through a second connecting rod. The two limiting plates can move closer or further apart to each other through the first connecting rod and the second connecting rod.
[0010] Furthermore, each of the linkage slots has anti-detachment slots on both sides, each anti-detachment slot is arranged along the length of the linkage slot, and each of the first linkage block and the second linkage block has anti-detachment plates on both sides, the anti-detachment plates being embedded in the anti-detachment slots.
[0011] Furthermore, the surface of the unloading section is provided with a clamping structure and a pulling structure. The clamping structure is used to clamp the steel plate, and the pulling structure is connected to the clamping structure and is used to drive the clamping structure to move along the length direction of the unloading section. The clamping structure includes a lower clamping plate, an upper clamping plate, and a mating plate. The upper and lower clamping plates are arranged in parallel and are used to clamp the steel plate. The mating plate is located on the side of the lower clamping plate near the output end of the unloading section and is perpendicular to the lower clamping plate. The upper clamping plate is fixedly connected to the lower clamping plate, and slidably connected to the mating plate. The upper clamping plate can move towards or away from the lower clamping plate along the height direction of the mating plate. A bearing frame is provided on the side wall of the mating plate, and the top wall of the bearing frame is parallel to the top wall of the mating plate. A pressing member is provided on the top wall of the bearing frame. The fixed end of the pressing member is fixedly connected to the top wall of the bearing frame, and the output end of the pressing member is fixedly connected to the upper clamping plate. The pressing member is used to drive the upper clamping plate to move along the height direction of the mating plate. The mating plate is connected to the pulling structure.
[0012] Furthermore, the pulling structure includes a threaded rod and a power source. A pulling groove is fixedly connected to the bottom wall of the unloading part along its length, and the pulling groove is in communication with the surface of the loading part. The threaded rod is disposed in the pulling groove and is arranged along the length of the pulling groove. Both ends of the threaded rod are rotatably connected to the two sides of the pulling groove, respectively. The power source is disposed on the side wall of the pulling groove. The fixed end of the power source is fixedly connected to the outer wall of the pulling groove, and the output end of the power source passes through the pulling groove and is fixedly connected to one end of the threaded rod. The bottom wall of the mating plate is provided with an extension, which is inserted into the pulling groove and threadedly connected to the threaded rod.
[0013] Furthermore, the unloading part is provided with two guide rods along its length, and the two guide rods are respectively provided on both sides of the pulling groove; the two ends of the guide rods are respectively provided with a first fixing block and a second fixing block, and the first fixing block and the second fixing block are fixedly connected to the upper surface of the unloading part. The first fixing block and the second fixing block are used to connect the guide rods to the surface of the unloading part; the side wall of the lower clamping plate is provided with two through holes, so that the lower clamping plate passes through the two guide rods.
[0014] Furthermore, a support plate is provided on each of the two guide rods on opposite sides. Both ends of each support plate are fixedly connected to the first fixing block and the second fixing block, respectively. The upper surface of each support plate is flush with the upper surface of the lower clamping plate. The support plate is used to support the steel plate.
[0015] In summary, this application has the following technical effects:
[0016] 1. By setting a limiting structure, after the steel plate is placed on the drilling machine, the drive component can control the two limiting plates to move in a direction that approaches each other. During the process of the two limiting plates moving in a direction that approaches each other, the centering operation of the steel plate can be achieved. Moreover, when both limiting plates are in contact with the steel plate, the steel plate can be limited throughout the entire steel plate processing process. Compared with the existing technology where the steel plate is directly transported by conveyor belt, the steel plate is limited during the transportation process, thereby improving the drilling accuracy.
[0017] 2. By setting a guide rod, the guide rod can limit the lower clamping plate, thereby achieving the effect of limiting the steel plate clamped between the lower clamping plate and the upper clamping plate;
[0018] 3. By setting up support plates, the steel plates are supported, ensuring that the steel plates remain horizontal during transportation. Attached Figure Description
[0019] Figure 1 This is a structural schematic diagram of a steel plate row punching machine according to this application;
[0020] Figure 2This is a structural schematic diagram from another angle of this application;
[0021] Figure 3 This is a top view of this application;
[0022] Figure 4 This is a partial structural diagram of this application.
[0023] In the diagram, 1. Support frame; 11. Loading section; 12. Drilling section; 13. Unloading section; 131. Sinking groove; 2. Limiting structure; 21. Drive assembly; 211. Bidirectional lead screw; 212. Drive component; 22. Limiting plate; 3. Linkage groove; 31. First linkage block; 311. Anti-detachment plate; 32. Second linkage block; 33. First connecting rod; 34. Second connecting rod; 35. Anti-detachment groove; 4. Clamping structure; 41. Upper clamping plate ; 42. Lower clamping plate; 43. Mating plate; 431. Bearing frame; 432. Lower pressing component; 433. Extension part; 5. Pulling structure; 51. Threaded rod; 52. Power source; 6. Pulling groove; 7. Guide rod; 71. First fixing block; 72. Second fixing block; 8. Support plate; 9. Drilling head; 10. Fixing plate; 101. Elastic component; 103. Support rod; 104. Lower pressing plate; 20. Steel plate; 30. Control box. Detailed Implementation
[0024] The present application will be further described in detail below with reference to the accompanying drawings.
[0025] Reference Figures 1-4 This embodiment provides a steel plate row punching machine, including a support frame 1 placed on the ground. The upper surface of the support frame 1 is divided into a punching section 12, a feeding section 11, and a discharging section 13. The punching section 12 is located between the feeding section 11 and the discharging section 13. The punching section 12 is used to punch steel plates 20 that enter the machine body through the feeding section 11. In use, the steel plates 20 are put into the feeding section 11 and then pushed to the discharging section 13. The steel plates 20 are punched when passing through the punching section 12.
[0026] Reference Figures 1-4 The bottom wall of the feeding section 11 is provided with a limiting structure 2. The limiting structure 2 includes a driving component 21 and a limiting plate 22. There are two limiting plates 22, which are respectively provided on opposite sides of the feeding section 11 in the width direction. The driving component 21 is provided on the bottom wall of the feeding section 11 and is connected to both limiting plates 22. The driving component 21 is used to control the two limiting plates 22 to move closer or further away from each other along the surface of the feeding section 11.
[0027] Reference Figures 1-4The bottom wall of the feeding section 11 is connected to a sinking trough 131, which is arranged along the width direction of the feeding section 11. A drive assembly 21 is disposed within the sinking trough 131. The drive assembly 21 includes a bidirectional lead screw 211 and a drive member 212. The axis of the bidirectional lead screw 211 is arranged along the width direction of the feeding section 11. The two ends of the bidirectional lead screw 211 are rotatably connected to two opposing inner walls of the sinking trough 131. The drive member 212 is disposed on the side wall of the sinking trough 131. The output end of 212 passes through the side wall of the sinking trough 131 and is fixedly connected to one end of the bidirectional lead screw 211. The fixed end of the drive component 212 is fixedly connected to the side wall of the sinking trough 131. Two limiting plates 22 are respectively threaded onto the two sections of the bidirectional lead screw 211 with opposite rotation directions, and the two limiting plates 22 are symmetrically arranged. A sliding groove is opened on the surface of the feeding part 11 along the axial direction of the bidirectional lead screw 211, and each limiting plate 22 protrudes through the sliding groove to the surface of the feeding part 11.
[0028] Reference Figures 1-4 In use, the steel plate 20 is placed into the feeding section 11, and then the drive unit 212 is started. The output end of the drive unit 212 rotates, driving the bidirectional lead screw 211 to rotate. The bidirectional lead screw 211 drives the two limiting plates 22 to move closer to each other along the slide groove until the two limiting plates 22 respectively abut against the two sides of the steel plate 20. This process can gradually center the steel plate 20, and in the process of pushing the steel plate 20 into the punching section 12 through the feeding plate for punching, the limiting effect of the steel plate 20 is achieved. In this embodiment, the drive unit 212 is preferably a servo motor.
[0029] Reference Figures 1-4 The chute is located in the middle of the feeding section 11. Several linkage grooves 3 are symmetrically arranged on both sides of the surface of the feeding section 11 with the chute as the center. There is a gap between adjacent linkage grooves 3. Each linkage groove 3 is parallel to the chute. A first linkage block 31 and a second linkage block 32 are slidably connected on both sides of each linkage groove 3. Several first linkage blocks are fixedly connected to one of the limiting plates 22 through a first connecting rod 33. Several second linkage blocks are fixedly connected to another limiting plate 22 through a second connecting rod 34. This allows the two limiting plates 22 to move closer or further apart, which can be driven by the first connecting rod 33 and the second connecting rod 34 to move the first linkage block 31 and the second linkage block 32 closer or further apart. Compared with relying solely on two limiting plates 22 to limit the steel plate 20, this increases the limiting area on both sides of the steel plate 20 and improves the limiting effect on the steel plate 20.
[0030] Reference Figures 1-4 Each linkage groove 3 has anti-detachment grooves 35 on both sides, and each anti-detachment groove 35 is set along the length of the linkage groove 3. Each first linkage block 31 and second linkage block 32 has anti-detachment pieces 311 fixedly connected to both sides, and the anti-detachment pieces 311 are embedded in the anti-detachment grooves 35.
[0031] Reference Figures 1-4 The surface of the unloading section 13 is provided with a clamping structure 4 and a pulling structure 5. The clamping structure 4 is used to clamp the steel plate 20. The pulling structure 5 is connected to the clamping structure 4 and is used to drive the clamping structure 4 to move along the length direction of the unloading section 13. The clamping structure 4 includes a lower clamping plate 42, an upper clamping plate 41, and a mating plate 43. The upper clamping plate 41 and the lower clamping plate 42 are arranged in parallel and are used to clamp the steel plate 20. The mating plate 43 is arranged on the side of the lower clamping plate 42 near the output end of the unloading section 13. The mating plate 43 is arranged perpendicular to the lower clamping plate 42 and is fixed to the lower clamping plate 42. The upper clamping plate 41 is slidably connected to the mating plate 43. The upper clamping plate 41 can move towards or away from the lower clamping plate 42 along the height direction of the mating plate 43. A support frame 431 is provided on the side wall of the mating plate 43. The top wall of the support frame 431 is parallel to the top wall of the mating plate 43. A lower pressing member 432 is provided on the top wall of the support frame 431. The fixed end of the lower pressing member 432 is fixedly connected to the top wall of the support frame 431. The output end of the lower pressing member 432 is fixedly connected to the upper clamping plate 41. The lower pressing member 432 is used to drive the upper clamping plate 41 to move along the height direction of the mating plate 43. In this embodiment, the lower pressing member 432 is preferably an electric cylinder.
[0032] Reference Figures 1-4 Specifically, the sliding connection between the mating plate 43 and the upper clamping plate 41 is as follows: a dovetail groove is provided on the surface of the mating plate 43 along the length direction; a dovetail block is fixedly connected to the side wall of the upper clamping plate 41 corresponding to the dovetail groove; the dovetail groove and the dovetail block are inserted into each other and can slide relative to each other; the output end of the aforementioned pressing member 432 passes through the dovetail groove and is fixedly connected to the top wall of the upper clamping plate 41.
[0033] Reference Figures 1-4 The pulling structure 5 includes a threaded rod 51 and a power source 52. A pulling groove 6 is fixedly connected to the bottom wall of the unloading part 13 along its length. The pulling groove 6 is connected to the upper surface of the unloading part 13. The threaded rod 51 is disposed in the pulling groove 6 and is disposed along the length of the pulling groove 6. The two ends of the threaded rod 51 are rotatably connected to the two sides of the pulling groove 6, respectively. The power source 52 is disposed on the side wall of the pulling groove 6. The fixed end of the power source 52 is fixedly connected to the outer wall of the pulling groove 6, and the output end of the power source 52 passes through the pulling groove 6 and is fixedly connected to one end of the threaded rod 51. The output end of the power source 52 is used to drive the threaded rod 51 to rotate along its own axis. In this embodiment, the power source 52 is preferably a servo motor.
[0034] Reference Figures 1-4The bottom wall of the mating plate 43 is provided with an extension 433. The extension 433 is inserted into the pull groove 6 and threadedly connected to the threaded rod 51. Therefore, when the threaded rod 51 rotates, the mating plate 43 can be driven to move along the length direction of the threaded rod 51 through the extension 433.
[0035] Reference Figures 1-4 The unloading part 13 is provided with two guide rods 7 along its own length direction. The two guide rods 7 are respectively located on both sides of the pulling groove 6. The two ends of the guide rods 7 are respectively fixedly connected to a first fixing block 71 and a second fixing block 72. The first fixing block 71 and the second fixing block 72 are both fixedly connected to the upper surface of the unloading part 13. The first fixing block 71 and the second fixing block 72 are used to connect the guide rods 7 to the surface of the unloading part 13. The side wall of the lower clamping plate 42 is provided with two through holes, so that the lower clamping plate 42 passes through the two guide rods 7.
[0036] Reference Figures 1-4 Each of the two guide rods 7 is provided with a support plate 8 on its opposite sides. Both ends of each support plate 8 are fixedly connected to the first fixing block 71 and the second fixing block 72, respectively. The bottom wall of each support plate 8 is fixedly connected to the upper surface of the unloading part 13. The upper surface of each support plate 8 is flush with the upper surface of the lower clamping plate 42. The support plates 8 are used to support the steel plate 20.
[0037] Reference Figures 1-4 A punching head 9 is provided on the top of the punching part 12. The punching head 9 is fixedly connected to the frame. The punching direction of the punching machine is set towards the upper surface of the punching part 12. Specifically, the model and specifications of the punching head 9 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.
[0038] Reference Figures 1-4 It should be noted that the upper surfaces of the feeding section 11 and the unloading section 13 are higher than the punching section 12. That is to say, when the steel plate 20 passes through the punching section 12, its sides are supported by the feeding section 11 and the unloading section 13. A certain gap is left between the steel plate 20 and the upper surface of the punching section 12. This gap provides working space for the punching head 9 to punch the steel plate 20.
[0039] Reference Figures 1-4Both sides of the punch head 9 are fixedly connected to a fixing plate 10. Each fixing plate 10 is parallel to the surface of the punching part 12. A lower pressure plate 104 is provided below each fixing plate 10. The lower pressure plate 104 is parallel to the fixing plate 10. Several elastic elements 101 are provided between the lower pressure plate 104 and the fixing plate 10. Both ends of each elastic element 101 are fixedly connected to the lower pressure plate 104 and the fixing plate 10, respectively. A support rod 103 is inserted into each elastic element 101. The axis of the support rod 103 is consistent with the axis of the elastic element 101. One end of the support rod 103 is fixedly connected to the lower pressure plate 104, and the other end extends out of the fixing plate 10.
[0040] Reference Figures 1-4 When the punch head 9 moves downward to punch the steel plate 20, the punch head 9 will drive the fixed plate 10 and the lower pressure plate 104 to move downward synchronously. After the lower pressure plate 104 abuts against the surface of the steel plate 20, the punch head 9 continues to move downward. At this time, the punch head 9 will drive the fixed plate 10 to continue to move. The fixed plate 10 will apply pressure to the steel plate 20 by the lower pressure plate 104 through the compression elastic element 101, so that when the punch head is punching the steel plate 20, both ends of the steel plate 20 are in a fixed state. In this embodiment, the top wall of each support rod 104 is provided with an anti-detachment part, and the diameter of the anti-detachment part is larger than the diameter of the support rod.
[0041] Reference Figures 1-4 In this embodiment, a control box 30 is also provided. The control box 30 is fixedly connected to the support frame 1. The control box 30 is equipped with a control system. The input end of the control system is electrically connected to the power supply. The output end of the control system is coupled to the drive component 212, the power source 52, the pressing component 432, and the punch head 9. It should be noted that the algorithm of the control system is common knowledge known to those skilled in the art. In actual use, a suitable punch head 9 can be selected according to the specifications of the steel plate 20. The travel amount and start-stop time of the output end of the power source 52 and the drive component 212 can be calculated and set so that when the operator puts the steel plate 20 into the input end and puts the input end of the steel plate 20 between the lower clamping plate 42 and the upper clamping plate 41, the control system is started. The control system can drive the pressing component 432 and the drive component 212 to perform operations, realize the clamping, centering, and limiting of the steel plate 20, and then continue to start the power source 52 and the punch head 9 to pull and punch the steel plate 20.
[0042] The specific implementation principle of the steel plate row punching machine in this application embodiment is as follows: First, the steel plate 20 is placed into the input section, so that the input end of the steel plate 20 abuts against the lower clamping plate 42. Then, the control system is started. The control system will first issue an instruction to the drive component 212. The output end of the drive component 212 rotates, which drives the bidirectional lead screw 211 to rotate. The rotation of the bidirectional lead screw 211 drives the two limiting plates 22 to move towards each other. The two limiting plates 22, through the first connecting rod 33 and the second connecting rod 34, drive the first linkage block 31 and the second linkage block 32 on both sides of the steel plate 20 to move synchronously, so that the first linkage block 31 and the second linkage block 32 and the two limiting plates 22 work together to center the steel plate 20 and center both sides of the steel plate 20. The system sets a limit; then the control system sends a command to the lower pressure member 432. The output end of the lower pressure member 432 pushes the dovetail block to move along the dovetail groove, so that the upper clamping plate 41 abuts against the steel plate 20, and the upper clamping plate 41 and the lower clamping plate 42 together clamp the steel plate 20. Then the control system sends a command to the power source 52. The output end of the power source 52 drives the threaded rod 51 to rotate. The rotation of the threaded rod 51 drives the extension part 433 to move along the threaded rod 51. The extension part 433 drives the mating plate 43 to move. The mating plate 43 drives the steel plate 20 to move towards the lower material part 13. During the process of moving the steel plate 20, the mating plate 43 will periodically start the punching head 9 to punch the steel plate 20.
[0043] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A steel sheet gang drilling machine characterized by: The application relates to a support frame (1) placed on the ground, the upper surface of the support frame (1) is divided into a punching part (12), a feeding part (11) and a discharging part (13), the punching part (12) is located between the feeding part (11) and the discharging part (13), and the punching part (12) is used for punching a steel plate (20) entering into a machine body through the feeding part (11); The bottom wall of the feeding part (11) is provided with a limiting structure (2), the limiting structure (2) comprises a driving assembly (21) and limiting plates (22), the limiting plates (22) are provided in two, the two limiting plates (22) are respectively arranged on the two sides opposite to each other in the width direction of the feeding part (11), the driving assembly (21) is arranged on the bottom wall of the feeding part (11), the driving assembly (21) is connected with the two limiting plates (22), and the driving assembly (21) is used for controlling the two limiting plates (22) to move close to or away from each other along the surface of the feeding part (11). The limiting plates (22) are higher than the upper surface of the feeding part (11), and the limiting plates (22) are used for limiting the two sides of the steel plate (20).
2. A steel sheet in-line piercing mill as claimed in claim 1, characterized in that: The bottom wall of the discharging part (13) is communicated with a sinking groove (131), The sinking groove (131) is arranged along the width direction of the feeding part (11), and the driving assembly (21) is arranged in the sinking groove (131); the driving assembly (21) comprises a bidirectional screw rod (211) and a driving piece (212), the axis of the bidirectional screw rod (211) is arranged along the width direction of the feeding part (11), the two ends of the bidirectional screw rod (211) are rotationally connected with the two inner walls opposite to each other of the sinking groove (131), the driving piece (212) is arranged on the side wall of the sinking groove (131), the output end of the driving piece (212) penetrates through the side wall of the sinking groove (131) and is fixedly connected with one end of the bidirectional screw rod (211), and the fixed end of the driving piece (212) is fixedly connected with the side wall of the sinking groove (131); the two limiting plates (22) are respectively screw-connected on the threads with opposite rotation directions of the two sections of the bidirectional screw rod (211), and the two limiting plates (22) are symmetrically arranged; a sliding groove is formed on the surface of the feeding part (11) along the axis direction of the bidirectional screw rod (211), and each limiting plate (22) is arranged to protrude to the surface of the feeding part through the sliding groove.
3. A steel sheet in-line piercing mill as claimed in claim 2, characterized in that: The sliding groove is located in the middle of the feeding part (11), the surface of the feeding part (11) is symmetrically provided with a plurality of linkage grooves (3) with the sliding groove as the center, there is a gap between adjacent linkage grooves (3), each linkage groove (3) is parallel to the sliding groove; first linkage blocks (31) and second linkage blocks (32) are slidably connected to the two sides of each linkage groove (3), a plurality of first linkage blocks are fixedly connected with one limiting plate (22) through a first connecting rod (33), a plurality of second linkage blocks are fixedly connected with the other limiting plate (22) through a second connecting rod (34), and the two limiting plates (22) can be driven to move close to or away from each other through the first connecting rod (33) and the second connecting rod (34).
4. A steel sheet in-line piercing mill as claimed in claim 3, characterized in that: Prevent the groove (35) is arranged in the length direction of the linkage groove (3), each first linkage block (31) and second linkage block (32) are provided with anti-drop piece (311), anti-drop piece (311) is embedded in the anti-drop groove (35).
5. A steel sheet in-line piercing mill as claimed in claim 1, characterized in that: The surface of the blanking part (13) is provided with clamping structure (4) and pull structure (5), the clamping structure (4) is used for clamping the steel plate (20), the pull structure (5) is connected with the clamping structure (4), the pull structure (5) is used for driving the clamping structure (4) to move along the length direction of the blanking part (13);The clamping structure (4) comprises lower clamping plate (42), upper clamping plate (41) and matching plate (43), the upper clamping plate (41) and the lower clamping plate (42) are arranged in parallel, the upper clamping plate (41) and the lower clamping plate (42) are used for clamping the steel plate (20) between them, the matching plate (43) is arranged on one side of the lower clamping plate (42) close to the output end of the blanking part (13), the matching plate (43) is arranged perpendicularly to the lower clamping plate (42), the matching plate (43) is fixedly connected with the lower clamping plate (42), the upper clamping plate (41) is slidably connected with the matching plate (43), and the upper clamping plate (41) can move towards or away from the lower clamping plate (42) along the height direction of the matching plate (43). The side wall of the matching plate (43) is provided with a bearing frame (431), the top wall of the bearing frame (431) is parallel to the top wall of the matching plate (43), the top wall of the bearing frame (431) is provided with a pressing piece (432), the fixed end of the pressing piece (432) is fixedly connected with the top wall of the bearing frame (431), and the output end of the pressing piece (432) is fixedly connected with the upper clamping plate (41). The matching plate (43) is connected with the pull structure (5).
6. A steel sheet in-line piercing mill as claimed in claim 5, characterized in that: The pull structure (5) comprises a threaded rod (51) and a power source (52), and the bottom wall of the blanking part (13) is fixedly connected with a pull groove (6) in the length direction, the pull groove (6) penetrates the surface of the feeding part (11), the threaded rod (51) is arranged in the pull groove (6), the threaded rod (51) is arranged in the length direction of the pull groove (6), the two ends of the threaded rod (51) are rotatably connected with the two sides of the pull groove (6), and the power source (52) is arranged on the side wall of the pull groove (6). The fixed end of the power source (52) is fixedly connected with the outer wall of the pull groove (6), and the output end of the power source (52) penetrates the pull groove (6) and is fixedly connected with one end of the threaded rod (51). The bottom wall of the matching plate (43) is provided with an extension part (433), and the extension part (433) is inserted into the pull groove (6) and is threadedly connected with the threaded rod (51).
7. A steel sheet in-line piercing mill as claimed in claim 6, characterized in that: The blanking part (13) is provided with two guide rods (7) in the length direction thereof, and the two guide rods (7) are arranged on the two sides of the pull groove (6). Two ends of the guide rod (7) are respectively provided with a first fixed block (71) and a second fixed block (72), the first fixed block (71) and the second fixed block (72) are fixedly connected with the upper surface of the blanking part (13), and the first fixed block (71) and the second fixed block (72) are used for connecting the guide rod (7) to the surface of the blanking part (13). The side wall of the lower clamping plate (42) is provided with two through holes, so that the lower clamping plate (42) is arranged on the two guide rods (7).
8. A steel sheet in-line piercing mill as claimed in claim 7, characterized in that: Two sides of the two guide rods (7) away from each other are respectively provided with a supporting plate (8), two ends of each supporting plate (8) are respectively fixedly connected with the first fixed block (71) and the second fixed block (72), and the upper surface of each supporting plate (8) is flush with the upper surface of the lower clamping plate (42), and the supporting plate (8) is used for supporting the steel plate (20).