Steel sheet punching device

Abstract

The present invention discloses a steel sheet punching device, which includes a punching bracket, a steel strip positioning component, a steel strip material tray, a steel strip feeding mechanism, a bottom paper receiving mechanism, a cutting machine and a cover film recovery tray. The front end of the steel strip positioning component is connected to a steel strip feeding mechanism, and the steel strip positioning component is provided with a cutting machine. The bottom of the punching bracket is provided with a steel strip material tray and a bottom paper receiving mechanism. The steel strip on the steel strip material tray passes through the steel strip feeding mechanism and the steel strip positioning component and is transported to the bottom paper receiving mechanism. A cover film recovery tray is provided on the workbench of the punching bracket, and the cover film on the steel strip is recovered to the cover film recovery tray. Through the above-mentioned method, the present invention can position the steel strip during the conveying process, ensure the flatness of the steel strip during cutting, and avoid the tensile damage of the steel strip caused by stamping and cutting. The extrusion feeding can match the feeding of steel strips of different thicknesses, and can avoid the steel strip from running around during the collection, so as to prevent the collection force from affecting the cutting.

Description

Technical Field

[0001] The invention relates to the technical field of steel strip processing, in particular to a steel sheet punching device. Background Art

[0002] At present, steel strip processing includes processes such as feeding, positioning, cutting and film recovery, which require the coordinated use of multiple equipments, occupy a large area and have high cost. In order to meet the processing accuracy of each station, the product needs to be positioned multiple times, and the operation is complicated. The left and right positions of the steel strip are prone to deviation during feeding, and the steel strip is skewed. During the transportation of the steel strip, height difference is prone to occur at both ends, causing the steel strip to twist. These problems directly affect the cutting effect. The cut steel sheet is skewed, too long, too short or twisted. The pulling force of the ordinary turntable-type material collection will affect the cutting. The middle part of the steel strip is cut off after cutting. It is difficult to ensure smooth material collection for the recovery of the steel strip after cutting. Extrusion occurs, that is, the two ends of the steel strip are offset to the middle, which indirectly affects the cutting of the upper steel strip. Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a steel sheet punching device. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a steel sheet punching and cutting device with compact structure and stable operation. The device can position the steel strip during the conveying process to ensure the flatness of the steel strip during cutting, while avoiding the pulling damage of the steel strip caused by stamping and cutting. The extrusion feeding can match the feeding of steel strips of different thicknesses. At the same time, the device can prevent dust and avoid the steel strip from running around during the collection. The size of the collection force can be controlled. The unloading wheel is set to bend the recovered steel strip at the turning point to prevent the collection force from affecting the cutting.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a steel sheet punching and cutting device, which includes a punching and cutting bracket, a steel strip positioning component, a steel strip material tray, a steel strip feeding mechanism, a bottom paper receiving mechanism, a cutting machine and a cover film recovery tray. A steel strip positioning component is installed on the workbench of the punching and cutting bracket, a steel strip feeding mechanism is arranged at the front end of the steel strip positioning component, a cutting machine is arranged on the steel strip positioning component, a steel strip material tray and a bottom paper receiving mechanism are arranged at the bottom of the punching and cutting bracket, the steel strip on the steel strip material tray passes through the steel strip feeding mechanism and the steel strip positioning component and is transported to the bottom paper receiving mechanism, a cover film recovery tray is arranged on the workbench of the punching and cutting bracket, and the cover film on the steel strip is recovered to the cover film recovery tray.

[0005] Preferably, the steel belt positioning assembly includes a bearing seat, a ratchet, a connecting plate, a width limit block, a height limit block, a lifting assembly and an elastic adjustment assembly. The bearing seat is arranged on a punching bracket workbench, a ratchet is inserted on the bearing seat, a connecting plate is installed on the side plate of the bearing seat, two adjustable width limit blocks are installed on the connecting plate, the distance and adjustment between the two width limit blocks are consistent with the width of the steel belt, height limit blocks with adjustable height are installed at both ends of the connecting plate, the protruding end of the height limit block is located above the steel belt, a lifting assembly and an elastic adjustment assembly are also arranged on the punching bracket workbench, and the steel belt passes through the lifting assembly and the elastic adjustment assembly in sequence.

[0006] Preferably, the lifting assembly includes a fixed plate, an adjusting bolt, a lifting plate and a limit plate. The fixed plate is fixed on the punching bracket workbench, an adjusting bolt is installed at the bottom of the fixed plate, and the side end of the fixed plate is movably connected with the lifting plate. The adjusting bolt points to the lifting plate, and a limit plate is installed on the top of the lifting plate. The distance between the two limit plates is adjustable. The steel belt passes through the lifting plate, and the two limit plates limit the horizontal Y-direction freedom of the steel belt.

[0007] Preferably, the elastic adjustment component includes an adjusting bracket, a connecting column, a connecting shaft, a mold spring, a transition ratchet and a support rod. The adjusting bracket is arranged on a punching bracket workbench, connecting columns are vertically inserted on both sides of the adjusting bracket, and horizontally arranged connecting shafts are sleeved on the two connecting columns. The connecting column below the connecting shaft is sleeved with a mold spring, and the connecting shaft is sleeved with a transition ratchet. A support rod is installed on the protruding end of the adjusting bracket. The elastic adjustment component is elastically arranged, and the steel belt is used in conjunction with a cutting machine to avoid pulling damage to the steel belt due to stamping and cutting.

[0008] Preferably, the steel belt feeding mechanism includes an adjusting platform, a fixed frame, a driving wheel, a servo motor, a follower shaft, a flipping and clamping assembly, a gear and a cam bearing follower seat, the adjusting platform is arranged on the punching bracket workbench, the fixed frame is installed on the adjusting platform, the driving wheel is inserted on the fixed frame, the servo motor is also installed on the adjusting platform, the servo motor drives the driving wheel to rotate, a follower shaft is installed at one end of the fixed frame, the flipping and clamping assembly is installed on the follower shaft, the driven wheel is inserted on the rotating plate of the flipping and clamping assembly, gears are installed on the driving wheel and the driven wheel, the two gears are meshed, the steel belt passes through the driving wheel and the driven wheel, two cam bearing followers are inserted at the input end of the fixed frame, and the position between the two cam bearing followers is adjustable.

[0009] Preferably, the flipping and clamping assembly also includes a fixing rod, a connecting block, a fixing clamp, a buffer spring, a rotating shaft, an eccentric wheel, a handle, a limit rod and a cover plate, the two fixing rods are fixed on the fixing frame, the connecting block is fixed on the protruding end of the rotating plate, the fixing rod passes through the upper end of the connecting block and is equipped with a fixing clamp, the fixing rod between the fixing clamp and the connecting block is sleeved with a buffer spring, a rotating shaft is inserted between the two connecting blocks, the eccentric wheel is installed on the rotating shaft, a handle is installed on the protruding end of the rotating shaft, two limit rods are also installed on the rotating plate, and the upper ends of the two rotating plates are encapsulated with cover plates. The eccentric wheel is rotated by the handle, thereby driving the rotating plate to rotate along the driven shaft, adjusting the distance between the driving wheel and the driven wheel, and matching the thickness of the steel belt.

[0010] Preferably, the base paper receiving mechanism includes a recovery plate, a recovery motor, a recovery material tray, a clamping cylinder, a guide splint, a clamping block, a tensioning assembly and a unloading wheel. The recovery plate is equipped with a recovery motor, and the recovery motor drives the recovery material tray to rotate. The punching bracket workbench is equipped with a clamping cylinder and a guide splint. The telescopic rod of the clamping cylinder is equipped with a clamping block. The steel belt passes through the guide splint and the clamping block. The tensioning assembly is installed on the recovery plate below the guide splint and the clamping block. The unloading wheel is inserted on the recovery plate at the upper left corner of the tensioning assembly. The steel belt is recovered to the recovery material tray after passing through the tensioning assembly and the unloading wheel. The unloading wheel is set to bend the recovered steel belt at the turning point to prevent the receiving force from affecting the cutting.

[0011] Preferably, the tensioning assembly includes a linear slide, a sensor bracket, a first counterweight, a second counterweight, a connecting bracket, a sprocket, a shading sheet and an in-place sensor. The linear slide and the sensor bracket are vertically arranged on the recovery plate. The first counterweight and the second counterweight are respectively installed on the two sliding blocks of the linear slide. The second counterweight is installed with a connecting bracket. The connecting bracket and the first counterweight are relatively arranged and are both equipped with sprockets. The sprockets are respectively used in conjunction with the positioning holes on both sides of the steel belt. Most of the middle part of the cut steel belt is hollowed out. The sprockets on both sides prevent the steel belt from running around. A shading sheet is installed on the side end of the first counterweight, and an in-place sensor that cooperates with the shading sheet is installed on the sensor bracket.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The setting of the steel belt positioning component can limit the freedom of the steel belt in the width and height directions, and can position the steel belt during the conveying process;

[0014] The lifting assembly and elastic adjustment assembly are used in conjunction with the cutting machine to ensure the flatness of the steel strip during cutting, while avoiding the tensile damage of the steel strip caused by stamping and cutting;

[0015] The steel belt feeding mechanism adopts extrusion feeding, which can match the feeding of steel belts of different thicknesses and is dust-proof at the same time;

[0016] The bottom paper receiving mechanism can avoid the steel strip from running around due to the hollowing out of most of the middle part of the steel strip after cutting, and can control the size of the receiving force. The setting of the unloading wheel bends the recovered steel strip at the turning point to prevent the receiving force from affecting the cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the structure of a steel sheet punching device.

[0018] Figure 2 The figure is a schematic diagram of the structure of a steel strip positioning component of a steel sheet punching device.

[0019] Figure 3 for Figure 2 Partial enlargement of Figure A.

[0020] Figure 4 The figure is a schematic diagram of the structure of a lifting component of a steel sheet punching device.

[0021] Figure 5 The figure is a schematic diagram of the structure of an elastic adjustment component of a steel sheet punching device.

[0022] Figure 6 The figure is a schematic diagram of the structure of a steel strip feeding mechanism of a steel sheet punching device.

[0023] Figure 7 The present invention is a partial structural schematic diagram of a steel strip feeding mechanism of a steel sheet punching device.

[0024] Figure 8 The present invention is a schematic diagram of the structure of a bottom paper receiving mechanism of a steel sheet punching and cutting device.

[0025] Fig. 9 The figure is a schematic diagram of the structure of a tensioning assembly of a steel sheet punching device. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0027] See also Figures 1 to 9 , the embodiment of the present invention includes:

[0028] A steel sheet punching device comprises a punching bracket 11, a steel strip positioning component 12, a steel strip material tray 13, a steel strip feeding mechanism 14, a bottom paper receiving mechanism 15, a cutting machine 16 and a cover film recovery tray 17. The steel strip positioning component 12 is installed on the workbench of the punching bracket 11, the steel strip feeding mechanism 14 is connected to the front end of the steel strip positioning component 12, the cutting machine 16 is arranged on the steel strip positioning component 12, the steel strip material tray 13 and the bottom paper receiving mechanism 15 are arranged at the bottom of the punching bracket 11, the steel strip on the steel strip material tray 13 passes through the steel strip feeding mechanism 14 and the steel strip positioning component 12 and is transported to the bottom paper receiving mechanism 15, the cover film recovery tray 17 is arranged on the workbench of the punching bracket 11, and the cover film on the steel strip is recovered to the cover film recovery tray 17.

[0029] The steel belt positioning assembly 12 includes a bearing seat 121, a ratchet 122, a connecting plate 123, a width limit block 124, a height limit block 125, a lifting assembly 126 and an elastic adjustment assembly 127. The bearing seat 121 is arranged on the workbench of the punching bracket 11, and the ratchet 122 is inserted on the bearing seat 121. A connecting plate 123 is installed on the side plate of the bearing seat 121. Two adjustable width limit blocks 124 are installed on the connecting plate 123. The distance and adjustment between the two width limit blocks 124 are consistent with the width of the steel belt. Height limit blocks 125 with adjustable height are installed at both ends of the connecting plate 123. The protruding end of the height limit block 125 is located above the steel belt. A lifting assembly 126 and an elastic adjustment assembly 127 are also arranged on the workbench of the punching bracket 11. The steel belt passes through the lifting assembly 126 and the elastic adjustment assembly 127 in sequence.

[0030] The lifting assembly 126 includes a fixed plate 1261, an adjusting bolt 1262, a lifting plate 1263 and a limit plate 1264. The fixed plate 1261 is fixed on the workbench of the punching bracket 11. The adjusting bolt 1262 is installed at the bottom of the fixed plate 1261. The lifting plate 1263 is movably connected to the side end of the fixed plate 1261. The adjusting bolt 1262 points to the lifting plate 1263. The limit plate 1264 is installed on the top of the lifting plate 1263. The distance between the two limit plates 1264 is adjustable. When the steel belt passes through the lifting plate 1263, the two limit plates 1264 limit the horizontal Y-direction freedom of the steel belt.

[0031] The elastic adjustment component 127 includes an adjustment bracket 1271, a connecting column 1272, a connecting shaft 1273, a mold spring 1274, a transition ratchet 1275 and a support rod 1276. The adjustment bracket 1271 is arranged on the workbench of the punching bracket 11. The connecting columns 1272 are vertically inserted on both sides of the adjustment bracket 1271. The two connecting columns 1272 are sleeved with horizontally arranged connecting shafts 1273. The connecting column 1272 below the connecting shaft 1273 is sleeved with a mold spring 1274, and the connecting shaft 1273 is sleeved with a transition ratchet 1275. The protruding end of the adjustment bracket 1271 is installed with a support rod 1276. The elastic adjustment component 127 is elastically arranged, and the steel belt is used in conjunction with the cutting machine 16 to avoid the steel belt from being pulled and damaged due to stamping and cutting.

[0032] The steel strip feeding mechanism 14 comprises an adjusting platform 141, a fixing frame 142, a driving wheel 143, a servo motor 144, a follower shaft 145, a flipping and clamping assembly 146, a gear 147 and a cam bearing follower seat 148. The adjusting platform 141 is arranged on the working table of the punching bracket 11, the fixing frame 142 is installed on the adjusting platform 141, the driving wheel 143 is inserted on the fixing frame 142, and the servo motor 144 is also installed on the adjusting platform 141, and the servo motor 144 drives the driving wheel 1 43 rotates, a follower shaft 145 is installed at one end of the fixed frame 142, and a flipping and clamping assembly 146 is installed on the follower shaft 145, and a driven wheel 1462 is inserted on the rotating plate 1461 of the flipping and clamping assembly 146, and a gear 147 is installed on the driving wheel 143 and the driven wheel 1462, and the two gears 147 are meshed, and the steel belt passes through the driving wheel 143 and the driven wheel 1462, and two cam bearing follower seats 148 are inserted at the input end of the fixed frame 142, and the position between the two cam bearing follower seats 148 is adjustable.

[0033] The flipping and pressing assembly 146 also includes a fixing rod 1463, a connecting block 1464, a fixing clamp 1465, a buffer spring 1466, a rotating shaft 1467, an eccentric wheel 1468, a handle 1469, a limiting rod 14610 and a cover plate 14611. The two fixing rods 1463 are fixed to the fixing frame 142, the connecting block 1464 is fixed to the protruding end of the rotating plate 1461, the fixing rod 1463 passes through the upper end of the connecting block 1464 and the fixing clamp 1465 is installed, and the fixing rod 1463 between the fixing clamp 1465 and the connecting block 1464 A buffer spring 1466 is sleeved on the upper sleeve, a rotating shaft 1467 is inserted between the two connecting blocks 1464, an eccentric wheel 1468 is installed on the rotating shaft 1467, a handle 1469 is installed on the protruding end of the rotating shaft 1467, two limit rods 14610 are also installed on the rotating plate 1461, and a cover plate 14611 is packaged on the upper ends of the two rotating plates 1461. The eccentric wheel 1468 is rotated by the handle 1469, thereby driving the rotating plate 1461 to rotate along the driven shaft 145, thereby adjusting the distance between the driving wheel 143 and the driven wheel 1462 to match the thickness of the steel belt.

[0034] The bottom paper receiving mechanism 15 includes a recovery plate 151, a recovery motor 152, a recovery tray 153, a clamping cylinder 154, a guide clamping plate 155, a clamping block 156, a tensioning assembly 157 and a force unloading wheel 158. The recovery plate 151 is equipped with a recovery motor 152, and the recovery motor 152 drives the recovery tray 153 to rotate. The workbench of the punching bracket 11 is equipped with a clamping cylinder 154 and a guide clamping plate 155. The telescopic rod of the clamping cylinder 154 is A clamping block 156 is installed, and the steel belt passes through the guide splint 155 and the clamping block 156. A tensioning assembly 157 is installed on the recovery plate 151 below the guide splint 155 and the clamping block 156. A unloading wheel 158 is inserted on the recovery plate 151 at the upper left corner of the tensioning assembly 157. After passing through the tensioning assembly 157 and the unloading wheel 158, the steel belt is recovered to the recovery material tray 153. The setting of the unloading wheel 158 bends the recovered steel belt at the turning point to prevent the collection force from affecting the cutting.

[0035] The tensioning assembly 157 includes a linear slide 1571, a sensor bracket 1572, a first counterweight 1573, a second counterweight 1574, a connecting bracket 1575, a sprocket 1576, a light shielding sheet 1577 and an in-position sensor 1578. The linear slide 1571 and the sensor bracket 1572 are vertically arranged on the recovery plate 151. The first counterweight 1573 and the second counterweight 1574 are respectively installed on the two sliders of the linear slide 1571. A connecting bracket 1575 is installed on block 1574. The connecting bracket 1575 and the first counterweight block 1573 are arranged opposite to each other and are both equipped with sprockets 1576. The sprockets 1576 are used in conjunction with the positioning holes on both sides of the steel belt. Most of the middle part of the cut steel belt is hollowed out. The sprockets 1576 on both sides prevent the steel belt from running around. A shading sheet 1577 is installed on the side end of the first counterweight block 1573, and an in-position sensor 1578 cooperating with the shading sheet 1577 is installed on the sensor bracket 1572.

[0036] When a steel sheet punching device of the present invention is working, the steel strip on the steel strip material disc 13 passes through the steel strip feeding mechanism 14 and the steel strip positioning assembly 12 and is then transported to the bottom paper receiving mechanism 15. The steel strip passes through the ratchet wheel 122. The distance between the two width limit blocks 124 is adjusted to be consistent with the width of the steel strip, thereby limiting the freedom of the steel strip in the width direction. The extended end of the height limit block 125 is used to limit the freedom of the steel strip in the height direction. The steel strip passes through the steel strip feeding mechanism 14, and the steel strip passes through the driving wheel 143 and the driven wheel 1462. The eccentric wheel 1468 is rotated by the handle 1469, thereby driving the rotating plate 1461 to rotate along the driven shaft 145, adjusting the distance between the driving wheel 143 and the driven wheel 1462 to match the thickness of the steel strip. The servo motor 144 drives the driving wheel 143 and the driven wheel 1462 to rotate towards each other. The driving wheel 143 and the driven wheel 1462 are extruded for feeding. The cover plate 14611 is used for dust prevention. The steel strip continues to pass through the lifting assembly 126, and the lifting The height of the lowering plate 1263 is adjusted by the adjusting bolt 1262 to adjust the height of the steel strip before cutting. The steel strip passes through the lifting plate 1263. The two limit plates 1264 limit the horizontal Y-direction freedom of the steel strip. The steel strip passes through the cutting machine 16 to cut the steel sheet. After cutting, the steel strip passes through the transition ratchet 1275 of the elastic adjustment component 127. The transition ratchet 1275 is elastically set. The steel strip is used in conjunction with the cutting machine 16 to avoid the steel strip from being pulled due to stamping and cutting. After cutting, the steel strip is transported to The bottom paper receiving mechanism 15 has two sprockets 1576 which are operatively arranged and respectively used in conjunction with the positioning holes on both sides of the steel belt. Most of the middle part of the steel belt after cutting is hollowed out. The sprockets 1576 on both sides prevent the steel belt from running around. The shading sheet 1577 and the in-position sensor 1578 are used in conjunction with the recovery motor 152 to control the size of the receiving force. The unloading wheel 158 is set to bend the recovered steel belt at the turning point to prevent the receiving force from affecting the cutting. The covering film on the steel belt is recovered to the covering film recovery tray 17.

[0037] The present invention discloses a steel sheet punching and cutting device, which has a compact structure and stable operation. The device can position the steel strip during the conveying process, ensure the flatness of the steel strip during cutting, and avoid the pulling damage of the steel strip caused by punching and cutting. The extrusion type feeding can match the feeding of steel strips with different thicknesses. At the same time, the device can prevent dust and avoid the steel strip from running around during material collection. The size of the material collection force can be controlled. The unloading wheel is set to bend the recovered steel strip at the turning point to prevent the material collection force from affecting the cutting.

[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A steel sheet punching device, characterized in that: The steel sheet punching device comprises a punching bracket, a steel strip positioning component, a steel strip material tray, a steel strip feeding mechanism, a bottom paper receiving mechanism, a cutting machine and a cover film recovery tray. A steel strip positioning component is installed on the workbench of the punching bracket, a steel strip feeding mechanism is arranged at the front end of the steel strip positioning component, a cutting machine is arranged on the steel strip positioning component, a steel strip material tray and a bottom paper receiving mechanism are arranged at the bottom of the punching bracket, the steel strip on the steel strip material tray is transported to the bottom paper receiving mechanism after passing through the steel strip feeding mechanism and the steel strip positioning component, a cover film recovery tray is arranged on the workbench of the punching bracket, and the cover film on the steel strip is recovered to the cover film recovery tray; The steel belt positioning assembly comprises a bearing seat, a ratchet, a connecting plate, a width limit block, a height limit block, a lifting assembly and an elastic adjustment assembly. The bearing seat is arranged on a punching bracket workbench, a ratchet is inserted on the bearing seat, a connecting plate is installed on the side plate of the bearing seat, two adjustable width limit blocks are installed on the connecting plate, and height limit blocks with adjustable height are installed at both ends of the connecting plate. The protruding end of the height limit block is located above the steel belt. A lifting assembly and an elastic adjustment assembly are also arranged on the punching bracket workbench, and the steel belt passes through the lifting assembly and the elastic adjustment assembly in sequence; The steel belt feeding mechanism comprises an adjusting platform, a fixing frame, a driving wheel, a servo motor, a follower shaft, a flipping and clamping assembly, a gear and a cam bearing follower seat. The adjusting platform is arranged on a punching bracket workbench, a fixing frame is installed on the adjusting platform, a driving wheel is inserted on the fixing frame, a servo motor is also installed on the adjusting platform, the servo motor drives the driving wheel to rotate, a follower shaft is installed at one end of the fixing frame, a flipping and clamping assembly is installed on the follower shaft, a driven wheel is inserted on the rotating plate of the flipping and clamping assembly, gears are installed on the driving wheel and the driven wheel, the two gears are meshed, the steel belt passes through the driving wheel and the driven wheel, and two cam bearing follower seats are inserted at the input end of the fixing frame; The bottom paper receiving mechanism includes a recovery plate, a recovery motor, a recovery material tray, a clamping cylinder, a guide clamping plate, a clamping block, a tensioning assembly and a force-unloading wheel. The recovery plate is equipped with a recovery motor, and the recovery motor drives the recovery material tray to rotate. The clamping cylinder and the guide clamping plate are installed on the punching bracket workbench. The clamping block is installed on the telescopic rod of the clamping cylinder. The steel belt passes through the guide clamping plate and the clamping block. The tensioning assembly is installed on the recovery plate below the guide clamping plate and the clamping block. The force-unloading wheel is inserted on the recovery plate on the upper left corner of the tensioning assembly. The steel belt is recovered to the recovery material tray after passing through the tensioning assembly and the force-unloading wheel.

2. A steel sheet punching device according to claim 1, characterized in that: The lifting assembly includes a fixed plate, an adjusting bolt, a lifting plate and a limit plate. The fixed plate is fixed on the punching bracket workbench, an adjusting bolt is installed at the bottom of the fixed plate, the side end of the fixed plate is movably connected with the lifting plate, the adjusting bolt points to the lifting plate, and a limit plate is installed on the top of the lifting plate.

3. A steel sheet punching device according to claim 1, characterized in that: The elastic adjustment component includes an adjustment bracket, a connecting column, a connecting shaft, a mold spring, a transition ratchet and a support rod. The adjustment bracket is arranged on a punching bracket workbench. Connecting columns are vertically inserted on both sides of the adjustment bracket. The two connecting columns are sleeved with horizontally arranged connecting shafts. The connecting column below the connecting shaft is sleeved with a mold spring. The connecting shaft is sleeved with a transition ratchet, and a support rod is installed on the protruding end of the adjustment bracket.

4. A steel sheet punching device according to claim 1, characterized in that: The flipping and clamping assembly also includes a fixing rod, a connecting block, a fixing clamp, a buffer spring, a rotating shaft, an eccentric wheel, a handle, a limiting rod and a cover plate. The two fixing rods are fixed on the fixing frame, the connecting block is fixed on the protruding end of the rotating plate, the fixing rod passes through the upper end of the connecting block and is equipped with a fixing clamp, a buffer spring is sleeved on the fixing rod between the fixing clamp and the connecting block, a rotating shaft is inserted between the two connecting blocks, the eccentric wheel is installed on the rotating shaft, the handle is installed on the protruding end of the rotating shaft, two limiting rods are also installed on the rotating plate, and the upper ends of the two rotating plates are encapsulated with a cover plate.

5. The steel sheet punching device according to claim 1, characterized in that: The tensioning assembly includes a linear slide, a sensor bracket, a first counterweight, a second counterweight, a connecting bracket, a sprocket, a shading sheet and an in-place sensor. The linear slide and the sensor bracket are vertically arranged on a recovery plate. The first counterweight and the second counterweight are respectively installed on the two sliding blocks of the linear slide. The second counterweight is installed with a connecting bracket. The connecting bracket and the first counterweight are arranged opposite to each other and are both equipped with sprockets. The sprockets are respectively used in conjunction with the positioning holes on both sides of the steel belt. A shading sheet is installed on the side end of the first counterweight, and an in-place sensor that cooperates with the shading sheet is installed on the sensor bracket.

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