A steel strip end guiding and docking device

Abstract

This invention provides a steel strip end guiding and docking device, including a docking frame, a first punching table and a sliding plate slidably mounted along the axis of the docking frame, a second punching table on the sliding plate, and an adjustment mechanism on the sliding plate for adjusting the lateral position of the second punching table. The tail and end of the steel strip are respectively fixed to the first and second punching tables. A liftable lifting frame is provided on the docking frame, and two sets of punching blocks are provided at the bottom of the lifting frame. A linkage mechanism connected to the lifting frame is provided on the sliding plate. During the lifting process, the lifting frame drives the sliding plate closer to or further away from the first punching table through the linkage mechanism. A welding mechanism is also provided on the lifting frame to weld the punched tail and end of the steel strip. This device eliminates the need for manual alignment and welding of the punched steel strip ends, improving work efficiency and increasing work safety.

Description

Technical Field

[0001] This invention relates to the field of steel strip processing technology, and more specifically to a steel strip end guiding and docking device. Background Technology

[0002] The steel strip processing process provided by the steel mill requires uncoiling the coiled steel and feeding it into the processing equipment. In order to achieve fast, efficient and continuous production without stopping the machine during the subsequent precision rolling of the steel strip, multiple steel strip coils are often uncoiled and their ends are welded together to form a more continuous long steel strip. This ensures that the downtime and other intermediate ineffective time on the subsequent production line is reduced, and achieves efficient and energy-saving continuous processing.

[0003] To ensure a flat weld end, one end of the strip is typically cut off to create a new, flat end before welding. However, existing equipment requires cutting the tail end of the previous steel strip first, then cutting the front end of the next strip, manually aligning the ends, and finally welding. This process of guiding and connecting the steel strip ends is quite complex. Furthermore, manually aligning and welding the cut steel strip ends reduces efficiency and poses safety risks during the process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a steel strip end guiding and docking device to solve the technical problems mentioned in the background art, which require manual alignment and welding of the punched steel strip ends after punching, resulting in reduced work efficiency and low work safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel strip end guiding and docking device, comprising:

[0006] A docking frame, wherein a first punching table and a sliding plate slidably mounted along the axis of the docking frame are provided on the docking frame;

[0007] The second blanking table is disposed on the sliding plate, and the sliding plate is provided with an adjustment mechanism for adjusting the lateral position of the second blanking table. The steel strip tail and the steel strip end are respectively fixed on the first blanking table and the second blanking table.

[0008] A lifting frame is mounted on the docking frame in a height-adjustable manner, and two sets of punching blocks are provided at the bottom of the lifting frame;

[0009] A linkage mechanism is provided on the sliding plate and connected to the lifting frame. During the lifting process, the lifting frame drives the sliding plate to move closer to or away from the first punching table via the linkage mechanism.

[0010] The welding mechanism is slidably mounted on the lifting frame to weld the tail and end of the punched steel strip.

[0011] Furthermore, the docking frame is provided with a clamping mechanism, which is connected to the first and second punching tables to fix the steel strip tail and the steel strip end on the first and second punching tables respectively.

[0012] Furthermore, the clamping mechanism includes:

[0013] The clamping plate is provided in two sets, and the two sets of clamping plates are respectively connected to the first blanking table and the second blanking table in a height-adjustable manner, and one end of the first blanking table and the second blanking table protrudes out of the clamping plate.

[0014] The connecting plate is provided in two sets, and each set of the connecting plate is provided with a mounting bracket. One set of mounting brackets is fixedly connected to the clamping plate on the first punching table, and the other set of mounting brackets is provided with a crossbar. The clamping plate on the second punching table is slidably mounted on the crossbar along the axis of the crossbar.

[0015] A connecting column, one end of which is fixedly connected to one set of connecting plates, and the other end which slides along its axis through another set of connecting plates, wherein the axis of the connecting column is parallel to the axis of the docking frame; and

[0016] A first hydraulic rod is located at the bottom of the docking frame, and its telescopic end is connected to one of the sets of connecting plates.

[0017] Furthermore, the docking frame is provided with a top frame, and a second hydraulic rod is provided on the top inner side of the top frame, and the lifting frame is located at the telescopic end of the second hydraulic rod.

[0018] Furthermore, both sides of the lifting frame are provided with liftable pressure plates, the bottom surface of the pressure plates is lower than the bottom surface of the punching block, the pressure plates are connected to the lifting frame through elastic elements, and the two sets of pressure plates are respectively aligned with the areas of the first punching table and the second punching table that protrude from the clamping plate.

[0019] Furthermore, the adjusting mechanism includes a threaded rod with a rocker wheel at one end. The threaded rod is rotatably mounted on the sliding plate along its axis and passes through and is screwed onto the second punching table. The axis of the threaded rod is perpendicular to the axis of the docking frame.

[0020] Furthermore, the linkage mechanism includes a vertical plate, which is mounted on a sliding plate. A guide groove is provided on the vertical plate, and the guide groove includes three sets of longitudinally extending straight grooves. The three sets of straight grooves are connected by two sets of inclined grooves. A guide post is provided at the end of the lifting frame, and the guide post is slidably engaged in the guide groove.

[0021] Furthermore, the welding mechanism includes:

[0022] A sliding frame, wherein the lifting frame has a sliding groove extending perpendicularly to the axis of the docking frame, and the sliding frame is slidably engaged in the sliding groove along the extension direction of the sliding groove;

[0023] The welding machine is located at the bottom of the sliding frame;

[0024] A reciprocating lead screw is rotatably mounted on the lifting frame along its axis. A guide ring is provided on the sliding frame, and the guide ring is sleeved on and screwed to the reciprocating lead screw.

[0025] A drive motor is mounted on the lifting frame, and its output shaft is coaxially connected to the reciprocating lead screw.

[0026] Furthermore, a control switch is provided at the top of the inner side of the guide groove. The control switch is electrically connected to the drive motor to drive the reciprocating screw to rotate intermittently.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In use, the steel strip tail and steel strip end are fixed to the first and second punching tables respectively, with each part extending beyond the first and second punching tables. The lifting frame is then lowered to move the punching block downwards. During the descent, the lifting frame, through a linkage mechanism, causes the second punching table to slide away from the first punching table. When the lifting frame reaches its limit position, the punching block cuts the uneven areas of the steel strip tail and steel strip end. Then, the lifting frame is raised. During the rise, the lifting frame, through a linkage mechanism, controls the second punching table to slide in the opposite direction until it contacts the first punching table, thus quickly moving the steel strip tail and steel strip end to contact. Finally, the welding mechanism welds the steel strip tail and steel strip end together. This eliminates the need for manual alignment and welding of the punched steel strip ends, improving work efficiency and safety.

[0029] 2. In its initial state, the lifting frame has its upper guide column positioned within a set of straight grooves in the middle. At this time, the second punching table is close to the first punching table but with a certain distance between them, facilitating the adjustment mechanism to drive the second punching table to slide along the axis perpendicular to the docking frame, thereby aligning the steel strip tail and steel strip end to avoid misalignment during welding. As the lifting frame moves downward, it controls the second punching table to slide away from the first punching table via one of the inclined grooves. When the guide column enters the set of straight grooves at the end, the punching of the steel strip is completed. Then, the lifting frame is controlled to rise until it reaches the top of the guide groove. The second punching table slides until it contacts the first punching table, releasing the steel strip tail and steel strip end. The guide column triggers a control switch to drive the drive motor to rotate. During the rotation of the drive motor, the reciprocating screw and guide ring work together to drive the welding machine to slide along the axis of the reciprocating screw to weld the steel strip tail and steel strip end. This greatly reduces the manual operation steps and further improves the efficiency and safety of steel strip end docking. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0031] Figure 1 A three-dimensional structural schematic diagram of a steel strip end guiding and docking device provided by the present invention;

[0032] Figure 2 This is a schematic diagram of the docking frame in a steel strip end guiding docking device of the present invention;

[0033] Figure 3 This is a side view of a steel strip end guiding and docking device according to the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the second punching table in a steel strip end guiding and docking device of the present invention;

[0035] Figure 5 This is a schematic diagram of the lifting frame in a steel strip end guiding and docking device of the present invention;

[0036] Figure 6 This is a schematic diagram of the welding assembly in a steel strip end guiding and docking device according to the present invention;

[0037] Figure 7 This is a schematic diagram of the lifting mechanism in a steel strip end guiding and docking device of the present invention.

[0038] Figure label:

[0039] 101. Connecting frame; 102. Top frame; 103. First punching table;

[0040] 201. Sliding plate; 202. Vertical plate; 203. Guide groove; 204. Threaded rod; 205. Rocker wheel; 206. Second punching table; 207. Control switch;

[0041] 301. First hydraulic rod; 302. Clamping plate; 303. Connecting column; 304. Connecting plate; 305. Mounting bracket; 306. Crossbar;

[0042] 401. Second hydraulic rod; 402. Lifting frame; 403. Guide column; 404. Punching block; 405. Pressure plate; 406. Elastic element; 407. Slide groove;

[0043] 501. Reciprocating lead screw; 502. Drive motor; 503. Sliding frame; 504. Guide ring; 505. Welding machine;

[0044] 601. Steel strip tail; 602. Steel strip end. Detailed Implementation

[0045] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0046] Example:

[0047] like Figure 1 , 3 As shown in Figures 4 and 7, the present invention provides a steel strip end guiding and docking device, including a docking frame 101, a first punching table 103 and a sliding plate 201 slidably mounted along the axis of the docking frame 101 on the docking frame 101, a second punching table 206 on the sliding plate 201, and a clamping mechanism on the docking frame 101. The clamping mechanism is connected to the first punching table 103 and the second punching table 206 to fix the steel strip tail 601 and the steel strip end 602 on the first punching table 103 and the second punching table 206, respectively.

[0048] The clamping mechanism includes two sets of clamping plates 302 and two sets of connecting plates 304. The two sets of clamping plates 302 are vertically and vertically connected to the first blanking table 103 and the second blanking table 206, respectively. One end of both the first blanking table 103 and the second blanking table 206 protrudes from the clamping plates 302. Each set of connecting plates 304 is provided with a mounting bracket 305. One set of mounting brackets 305 is fixedly connected to the clamping plate 302 on the first blanking table 103, and the other set of mounting brackets 305 is provided with a crossbar 3. 06. The clamping plate 302 on the second punching table 206 is slidably mounted on the crossbar 306 along the axis of the crossbar 306. A connecting column 303 is fixed on one set of connecting plates 304. One end of the connecting column 303 slides through the other set of connecting plates 304 along its axis. The axis of the connecting column 303 is parallel to the axis of the docking frame 101. A first hydraulic rod 301 is provided at the bottom of the docking frame 101. The telescopic end of the first hydraulic rod 301 is connected to one set of connecting plates 304.

[0049] After the steel strip tail 601 and steel strip end 602 are moved to the first punching table 103 and the second punching table 206 respectively, the first hydraulic rod 301 is extended. During the extension of the first hydraulic rod 301, one set of connecting plates 304 is driven to move downward, and under the action of the connecting column 303, the other set of connecting plates 304 is controlled to move downward synchronously, so that the two sets of clamping plates 302 move downward at the same time to clamp the steel strip tail 601 and steel strip end 602, which facilitates the subsequent punching and welding process.

[0050] like Figure 4 As shown. In this embodiment, the sliding plate 201 is provided with an adjustment mechanism for adjusting the lateral position of the second blanking table 206. The adjustment mechanism includes a threaded rod 204, one end of which is provided with a rocker wheel 205. The threaded rod 204 is rotatably mounted on the sliding plate 201 along its axis, and the threaded rod 204 passes through and is screwed onto the second blanking table 206. The axis of the threaded rod 204 is perpendicular to the axis of the docking frame 101.

[0051] After fixing the steel strip tail 601 and steel strip end 602 to the first blanking table 103 and the second blanking table 206 respectively, the threaded rod 204 is rotated by rotating the rocker wheel 205. During the rotation, the threaded rod 204 drives the second blanking table 206 to slide along the axis of the threaded rod 204 through the threaded engagement, thereby causing the steel strip end 602 on the second blanking table 206 to move laterally until it is aligned with the steel strip tail 601 on the first blanking table 103. In addition, during the adjustment of the lateral position of the second blanking table 206, one set of clamping plates 302 can slide along the crossbar 306. During the sliding plate 201 sliding along the axis of the docking frame 101, one set of connecting plates 304 can slide along the connecting column 303 to avoid interference with the movement of the steel strip end 602.

[0052] like Figure 2 ,3 As shown in Figure 5, in this embodiment, a top frame 102 is provided on the docking frame 101, and a second hydraulic rod 401 is provided on the top inner side of the top frame 102. The lifting frame 402 is located at the telescopic end of the second hydraulic rod 401. The lifting frame 402 can be lowered by controlling the second hydraulic rod 401 to descend. Two sets of punching blocks 404 are provided at the bottom of the lifting frame 402. The steel strip punching is completed by the cooperation of the punching blocks 404 with the first punching table 103 and the second punching table 206.

[0053] like Figure 3 , 5 As shown, in this embodiment, both sides of the lifting frame 402 are provided with liftable pressure plates 405. The bottom surface of the pressure plates 405 is lower than the bottom surface of the punching block 404. The pressure plates 405 are connected to the lifting frame 402 through elastic elements 406. The two sets of pressure plates 405 are respectively aligned with the areas where one end of the first punching table 103 and the second punching table 206 protrudes and is aligned with the clamping plate 302. During the punching process of the steel strip, the two sets of pressure plates 405 first contact the tail 601 and the end 602 of the steel strip to be punched, and fix the tail 601 and the end 602 of the steel strip under the action of the elastic elements 406 to prevent the tail 601 and the end 602 of the steel strip from bending and deforming during the punching process. After punching, the lifting frame 402 rises under the action of the second hydraulic rod 401, and drives the pressure plates 405 to rise, and the elastic elements 406 reset.

[0054] like Figure 1 , 3 As shown in Figures 4 and 5, in this embodiment, the sliding plate 201 is provided with a linkage mechanism connected to the lifting frame 402. During the lifting process, the lifting frame 402 drives the sliding plate 201 to move closer to or away from the first punching table 103 through the linkage mechanism. The linkage mechanism includes a vertical plate 202, which is disposed on the sliding plate 201. A guide groove 203 is provided on the vertical plate 202. The guide groove 203 includes three sets of longitudinally extending straight grooves. The three sets of straight grooves are connected by two sets of inclined grooves. A guide post 403 is provided at the end of the lifting frame 402. The guide post 403 is slidably locked in the guide groove 203.

[0055] In the initial state, there is a small gap between the second punching table 206 and the first punching table 103, which facilitates the installation and alignment of the steel strip tail 601 and the steel strip end 602. At this time, the guide column 403 is located at point b in the guide groove 203. During the descent of the lifting frame 402, the guide column 403 is driven to move downward. During the descent, the guide column 403 drives the vertical plate 202 to slide through the movement of one of the inclined grooves, so as to control the sliding plate 201 to slide along the axis of the docking frame 101, so that the distance between the sliding plate 201 and the second punching table 206 and the first punching table 103 is maximized. During the process of moving from the inclined groove to point c, the second punching table 206 stops moving, and the steel strip punching is completed.

[0056] After the blanking is completed, the lifting frame 402 rises under the action of the second hydraulic rod 401, causing the guide column 403 to return to point b. The lifting frame 402 continues to rise, and the guide column 403 slides to point a in another set of inclined grooves. Thus, through the cooperation of the guide column 403 and the other set of inclined grooves, the second blanking table 206 slides in the opposite direction until the second blanking table 206 contacts the first blanking table 103. At this time, the steel strip tail 601 and the steel strip end 602 contact each other, completing the steel strip docking. No manual docking is required, which facilitates the subsequent welding work.

[0057] like Figure 5 , 6 As shown, in this embodiment, a welding mechanism is slidably mounted on the lifting frame 402 to weld the punched steel strip tail 601 and steel strip end 602. The welding mechanism includes a sliding frame 503. The lifting frame 402 has a groove 407 extending perpendicularly to the axis of the docking frame 101. The sliding frame 503 is slidably engaged in the groove 407 along its extension direction. A welding machine 505 is mounted at the bottom of the sliding frame 503. The lifting frame 402 is equipped with a reciprocating screw 501 that can rotate along its axis. The sliding frame 503 is equipped with a guide ring 504, which is sleeved on the reciprocating screw 501 and screwed to it. The lifting frame 402 is also equipped with a drive motor 502, and the output shaft of the drive motor 502 is coaxially connected to the reciprocating screw 501. A control switch 207 is provided on the top inner side of the guide groove 203. The control switch 207 is electrically connected to the drive motor 502 to drive the reciprocating screw 501 to rotate intermittently.

[0058] When the lifting frame 402 rises to its limit position under the action of the second hydraulic rod 401, the welding point of the welding machine 505 is flush with the steel strip. The guide column 403 moves to point a to trigger the control switch 207. The control switch 207 controls the drive motor 502 to start, which drives the reciprocating screw 501 to rotate intermittently. During the rotation of the reciprocating screw 501, it drives the sliding frame 503 to slide back and forth along the extension direction of the slide groove 407 through cooperation with the guide ring 504. Thus, the welding machine 505 welds the punched steel strip tail 601 and the steel strip end 602 without the need for manual welding, further improving the working efficiency of steel strip processing.

[0059] Specific usage and beneficial effects of the present invention:

[0060] In use, the steel strip tail 601 and steel strip end 602 are fixed to the first punching table 103 and the second punching table 206 respectively, with both extending slightly beyond the first punching table 103 and the second punching table 206. The connecting plate 304 is lowered via the first hydraulic rod 301, causing the two sets of clamping plates 302 to descend and hold the steel strip tail 601 and steel strip end 602 in place. Then, the lifting frame 402 is lowered, causing the punching block 404 to move downwards. During the descent of the lifting frame 402, the cooperation of the guide column 403 and the guide groove 203 causes the second punching table 206 to slide away from the first punching table 103. When the 02 descends to its limit position, the uneven areas of the steel strip tail 601 and steel strip end 602 are cut by the punching block 404. Then, the lifting frame 402 is controlled to rise. During the rising process, the second punching table 206 is controlled to slide in the opposite direction until it contacts the first punching table 103 through the cooperation of the guide column 403 and the guide groove 203. This quickly moves the steel strip tail 601 and steel strip end 602 to contact. Finally, the welding machine 505 welds the steel strip tail 601 and steel strip end 602. There is no need for manual alignment and welding of the punched steel strip end 602, which improves work efficiency and increases work safety.

[0061] In its initial state, the lifting frame 402 has its guide post 403 positioned within a set of straight grooves in the middle. At this time, the second cutting table 206 is close to the first cutting table 103 but with a certain distance between them. This allows the second cutting table 206 to slide along the axis perpendicular to the connecting frame 101 via an adjusting mechanism, aligning the steel strip tail 601 and the steel strip end 602 to prevent misalignment during welding. As the lifting frame 402 moves downward, it controls the second cutting table 206 to slide away from the first cutting table 103 via one set of inclined grooves. The cutting of the steel strip is completed when the guide post 403 enters the set of straight grooves at the end. Then, the lifting frame 402 is controlled to move downward. As the lifting frame 402 rises until it reaches the top of the guide groove 203, the second punching table 206 slides until it contacts the first punching table 103, thus releasing the steel strip tail 601 and the steel strip end 602. The guide column 403 triggers the control switch 207 to drive the drive motor 502 to rotate. During the rotation of the drive motor 502, the reciprocating screw 501 and the guide ring 504 work together to drive the welding machine 505 to slide along the axis of the reciprocating screw 501 to weld the steel strip tail 601 and the steel strip end 602. This greatly reduces the manual operation process and further improves the working efficiency of the steel strip end 602 docking.

[0062] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A steel strip end guiding and docking device, characterized in that, Including: A docking frame (101) is provided with a first punching table (103) and a sliding plate (201) that is slidably installed along the axis of the docking frame (101). The second blanking table (206) is disposed on the sliding plate (201), and the sliding plate (201) is provided with an adjustment mechanism for adjusting the lateral position of the second blanking table (206). The steel strip tail (601) and the steel strip end (602) are respectively fixed on the first blanking table (103) and the second blanking table (206). The lifting frame (402) is mounted on the docking frame (101) in a height-adjustable manner, and two sets of punching blocks (404) are provided at the bottom of the lifting frame (402). A linkage mechanism is provided on the sliding plate (201) and connected to the lifting frame (402). During the lifting process, the lifting frame (402) drives the sliding plate (201) to move closer to or away from the first punching table (103) through the linkage mechanism; and The welding mechanism is slidably mounted on the lifting frame (402) to weld the punched steel strip tail (601) and steel strip end (602); The linkage mechanism includes a vertical plate (202), which is mounted on a sliding plate (201). A guide groove (203) is provided on the vertical plate (202). The guide groove (203) includes three sets of longitudinally extending straight grooves, which are connected by two sets of inclined grooves. A guide column (403) is provided at the end of the lifting frame (402), and the guide column (403) is slidably engaged in the guide groove (203). The welding mechanism includes: The sliding frame (503) has a sliding groove (407) extending perpendicularly to the axis of the docking frame (101) on the lifting frame (402). The sliding frame (503) is slidably engaged in the sliding groove (407) along the extension direction of the sliding groove (407). A welding machine (505) is installed at the bottom of the sliding frame (503); A reciprocating screw (501) is rotatably mounted on the lifting frame (402) along its axis. A guide ring (504) is provided on the sliding frame (503). The guide ring (504) is sleeved on the reciprocating screw (501) and screwed to it. and A drive motor (502) is mounted on the lifting frame (402), and its output shaft is coaxially connected to the reciprocating screw (501); A control switch (207) is provided on the top inner side of the guide groove (203). The control switch (207) is electrically connected to the drive motor (502) to drive the reciprocating screw (501) to rotate intermittently.

2. The steel strip end guiding and docking device according to claim 1, characterized in that: The docking frame (101) is provided with a clamping mechanism, which is connected to the first punching table (103) and the second punching table (206) to fix the steel strip tail (601) and the steel strip end (602) on the first punching table (103) and the second punching table (206) respectively.

3. The steel strip end guiding and docking device according to claim 2, characterized in that, The clamping mechanism includes: The clamping plate (302) is provided in two sets, and the two sets of clamping plates (302) are respectively connected to the first blanking table (103) and the second blanking table (206) in a height-liftable manner, and one end of the first blanking table (103) and the second blanking table (206) protrudes out of the clamping plate (302). The connecting plate (304) is provided in two sets, and each set of the connecting plate (304) is provided with a mounting bracket (305). One set of mounting brackets (305) is fixedly connected to the clamping plate (302) on the first blanking table (103), and the other set of mounting brackets (305) is provided with a crossbar (306). The clamping plate (302) on the second blanking table (206) is slidably disposed on the crossbar (306) along the axial direction of the crossbar (306). A connecting column (303) has one end fixedly connected to one set of connecting plates (304), and the other end slidably passes through another set of connecting plates (304) along its axis, with the axis of the connecting column (303) parallel to the axis of the docking frame (101); and The first hydraulic rod (301) is located at the bottom of the docking frame (101), and its telescopic end is connected to one of the connecting plates (304).

4. The steel strip end guiding and docking device according to claim 3, characterized in that: The docking frame (101) is provided with a top frame (102), and a second hydraulic rod (401) is provided on the top inner side of the top frame (102). The lifting frame (402) is located at the telescopic end of the second hydraulic rod (401).

5. A steel strip end guiding and docking device according to claim 4, characterized in that: The lifting frame (402) is provided with lifting pressure plates (405) on both sides. The bottom surface of the pressure plate (405) is lower than the bottom surface of the punching block (404). The pressure plate (405) is connected to the lifting frame (402) through an elastic element (406). The two sets of pressure plates (405) are respectively aligned with the areas of the first punching table (103) and the second punching table (206) that protrude from one end and are aligned with the clamping plate (302).

6. The steel strip end guiding and docking device according to claim 1, characterized in that: The adjusting mechanism includes a threaded rod (204), one end of which is provided with a rocker wheel (205). The threaded rod (204) is rotatably mounted on the sliding plate (201) along its axis, and the threaded rod (204) passes through and is screwed onto the second punching table (206). The axis of the threaded rod (204) is perpendicular to the axis of the docking frame (101).

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