Anti-deflection tool clamp for rolled cylindrical pin

Abstract

The utility model discloses an anti-skew work fixture for rolled cylindrical pins, which comprises a transverse plate, two ends of the transverse plate are respectively provided with a vertical plate, two ends of the transverse plate are slidably connected with positioning clamping plates capable of being opened and closed, an adjusting structure for adjusting the distance between the positioning clamping plates is arranged between the two vertical plates, and the adjusting structure comprises a two-way screw rod rotationally connected with the two vertical plates. The two-way lead screw is in threaded connection with two threaded sleeves correspondingly fixed to the positioning clamping plates. The number of rotation turns of the two-way lead screw can be controlled according to the axial size of a metal sheet, then the distance between the two positioning clamping plates is adjusted, and therefore limiting adaptation to rolled cylindrical pins with different lengths is achieved. According to the utility model, workpieces can be quickly disassembled and assembled, so that the rolling processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a clamp, in particular to a tooling clamp for preventing a rolled cylindrical pin from being skewed. Background Art

[0002] A rolled cylindrical pin is a cylindrical part made by rolling a metal sheet. After the rolling is completed, both ends are chamfered. The elasticity formed by the rolling makes it easy to insert into the holes opened on some equipment parts to achieve connection-fixing and other effects. In order to ensure the processing accuracy, the rolled cylindrical pin needs to be equipped with a special fixture during the rolling process to prevent the rolling from being skewed. However, the existing fixtures used for the processing of rolled cylindrical pins still have some defects in use. The clamping distance cannot be adjusted according to the length of the workpiece during use, and it is necessary to equip fixtures of various specifications for processing. The invention patent with the announcement number CN105026063A discloses a method for manufacturing a hollow roller for rolling a plate. Through this method, a rectangular metal plate can be bent into a cylindrical plate, and after the rolling process, the end faces of the two ends of the cylindrical metal plate are made into a butt-jointed state, and the two butt-jointed end faces are subjected to mechanical processing to make the end faces smooth. However, this invention is used for processing hollow rollers. For rolled cylindrical pins whose size is much smaller than that of the hollow rollers, the equipment and fixtures used in the manufacturing process are not applicable. Utility Model Content

[0003] The existing tooling fixtures for processing rolled cylindrical pins have poor applicability and cannot adjust the clamping distance according to the length of the workpiece, so that tooling of various specifications is required to complete the processing of rolled cylindrical pins of different lengths. In order to overcome this defect, the utility model provides a tooling fixture for preventing the rolled cylindrical pins from skewing, which can adjust the clamping distance according to the length of the workpiece, thereby improving applicability.

[0004] The technical solution of the present utility model is: a tooling fixture for preventing the skew of rolled cylindrical pins, comprising a horizontal plate, a vertical plate at each end of the horizontal plate, a positioning clamp that can be opened and closed being slidably connected at both ends of the horizontal plate, an adjustment structure for adjusting the spacing between the positioning clamps being provided between the two vertical plates, the adjustment structure comprising a bidirectional screw connected to the two vertical plates in rotation, two threaded sleeves fixed corresponding to the positioning clamps being threadedly connected to the bidirectional screw. The bidirectional screw has two threads of two rotation directions, and the two threads of the two rotation directions respectively cooperate with the two threaded sleeves, so that when the bidirectional screw rotates, the two threaded sleeves are synchronously driven to move in opposite directions to realize the opening and closing of the positioning clamps. Before rolling the cylindrical pin, the metal sheet to be processed is placed between the two sets of positioning clamps, and then the bidirectional screw is started to rotate, and the positioning clamps are driven by the threaded sleeves to move and close and abut against the two ends of the metal sheet, effectively limiting the metal sheet to prevent the metal sheet from being twisted during rolling, thereby preventing the axial misalignment and offset from affecting the processing accuracy of the cylindrical pin workpiece. Therefore, the utility model can adjust the distance between the two positioning clamps according to the axial size of the metal sheet by controlling the number of rotations of the bidirectional screw, thereby achieving position limiting adaptation to coiled cylindrical pins of different lengths.

[0005] Preferably, a sliding groove is provided on the transverse plate, and the positioning clamp is slidably connected in the sliding groove. The positioning clamp is slidably connected to the sliding groove and cooperates with the threaded sleeve to define the moving path of the positioning clamp.

[0006] As an advantage, a connecting plate is fixed to the bottom end of the positioning splint, and the connecting plate is slidably connected in the chute. The connecting plate forms a protrusion on the positioning splint, which penetrates into the chute to achieve sliding connection between the positioning splint and the cross plate.

[0007] Preferably, a hexagonal sleeve is embedded in the vertical plate, an external threaded barrel is fixed on the outside of the vertical plate, an external hexagonal barrel is passed through the inside of the hexagonal sleeve, a support shaft is rotatably connected to the external hexagonal barrel, a positioning wheel is fixed to the end of the external hexagonal barrel, and a threaded cap that cooperates with the external threaded barrel is rotatably engaged with the positioning wheel. The support shaft serves as the rolling axis of the metal sheet, and the metal sheet is gradually wound and wrapped around the support shaft during the rolling process of the cylindrical pin. After the cylindrical pin is rolled, the threaded cap can be rotated to disengage it from the external threaded barrel, and then the threaded cap can be pulled to drive the external hexagonal barrel axially outward through the positioning wheel, so that the external hexagonal barrel is disengaged from the support shaft and the support for the support shaft is released. At this time, the support shaft can be removed from the vertical plate, making it easier to remove the rolled cylindrical pin workpiece from the support shaft, thereby quickly disassembling the workpiece to improve the efficiency of the rolling process.

[0008] Preferably, the positioning clamping plate is provided with a through slot opened at one edge of the positioning clamping plate, the center line of the through slot being coplanar with the center line of the support shaft, and the through slot provides a passage for the support shaft to pass through.

[0009] Preferably, one end of the bidirectional screw rod passes through the vertical plate and is fixedly connected to a rotating wheel, which is the force-applying end of the bidirectional screw rod and is used to input the rotational power of the bidirectional screw rod.

[0010] Preferably, a fixed frame is fixed to the top of the horizontal plate, a connecting frame is slidably connected to the interior of the fixed frame, a mounting frame is fixed to the top of the connecting frame, a support roller is provided on the mounting frame, a support spring connected to the mounting frame is provided within the fixed frame, and limit blocks are fixed on both sides of the bottom of the connecting frame. During the rolling process of the cylindrical pin workpiece, the support spring within the fixed frame can push the mounting frame to drive the support roller upward, so that the support roller always fits the bottom of the cylindrical pin workpiece, thereby supporting it and improving stability during rolling.

[0011] Preferably, two sides of the fixed frame are provided with limit slots, the limit slots being slidably connected to the limit blocks, and the support springs being fixedly connected to the mounting bracket. The limit blocks are slidably connected within the limit slots to limit the connection frame, thereby improving the stability of the support rollers and further enhancing the stability of the cylindrical pin workpiece during the cylindrical pin rolling process.

[0012] The beneficial effects of the utility model are:

[0013] Improved applicability: The utility model can control the number of rotations of the bidirectional screw according to the axial size of the metal sheet, thereby adjusting the distance between the two positioning splints, thereby achieving position limiting adaptation to coiled cylindrical pins of different lengths.

[0014] Improve rolling processing efficiency. The utility model can quickly disassemble and assemble workpieces, thereby improving rolling processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the present utility model.

[0016] Figure 2 It is a side view of the connecting plate in the present utility model.

[0017] Figure 3 It is a partial enlarged structural schematic diagram of the utility model.

[0018] Figure 4 It is a side view cross-sectional structural diagram of the horizontal plate in the utility model.

[0019] In the figure: 1- horizontal plate, 2- vertical plate, 3- support shaft, 4- positioning splint, 5- mounting frame, 6- support roller, 7- threaded cover, 8- external threaded cylinder, 9- rotating wheel, 10- connecting plate, 11- threaded sleeve, 12- bidirectional screw rod, 13- fixing frame, 14- connecting frame, 15- support spring, 16- limiting groove, 17- limiting block, 18- through groove, 19- positioning wheel, 20- external hexagonal cylinder, 21- hexagonal sleeve, 22- slide groove. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the specific embodiments of the drawings.

[0021] Example 1:

[0022] like Figures 1 to 4 As shown, a tooling fixture for preventing rolled cylindrical pins from tilting comprises a horizontal plate 1, with each end of the horizontal plate 1 being fixedly connected to a vertical plate 2, the center line of the horizontal plate 1 and the center line of the vertical plate 2 being in the same vertical plane, and positioning clamps 4 being provided at both ends of the horizontal plate 1, which are slidably connected to the horizontal plate 1 and can be synchronously moved toward or away from each other to achieve opening and closing, and an adjustment structure for adjusting the spacing between the positioning clamps is provided between the two vertical plates 2, the adjustment structure comprises a bidirectional screw rod 12 and a threaded sleeve 11, both ends of the bidirectional screw rod 12 are rotationally connected to the two vertical plates 2 in a one-to-one correspondence, the bidirectional screw rod 12 is provided with two sections of threads of equal length and opposite rotation directions, the threaded sleeve 11 has an internal thread, and the internal threads of the two threaded sleeves 11 are screwed together with the two sections of threads on the bidirectional screw rod 12 in a one-to-one correspondence to form a threaded connection. One end of the bidirectional screw rod 12 passes through the vertical plate 2 and is fixedly connected to the wheel 9. The centerline of the wheel 9 and the centerline of the bidirectional screw rod 12 are in the same vertical plane. Two threaded sleeves 11 are symmetrically distributed on the bidirectional screw rod 12 on either side of the midpoint of the bidirectional screw rod 12. Two positioning clamps 4 are fixed to the two threaded sleeves 11 in a one-to-one correspondence. A slide groove 22 is provided on the horizontal plate 1. The slide groove 22 is located on the central axis of the horizontal plate 1 and extends along the length of the horizontal plate 1. A connecting plate 10 is fixed to the bottom end of the positioning clamp 4. The connecting plate 10 is integrally formed with the positioning clamp 4 and is adapted to be inserted into the slide groove 22, so that the positioning clamp 4 is slidably connected to the slide groove 22, thereby achieving a sliding connection with the horizontal plate 1. The positioning clamp 4 has a through slot 18, which opens at one side edge of the positioning clamp 4. A detachable support shaft 3 is installed in the through slot 18. The centerline of the through slot 18 is perpendicular and coplanar with the centerline of the support shaft 3.

[0023] A hexagonal hole is formed on the vertical plate 2, which passes through both sides of the vertical plate 2. A hexagonal sleeve 21 is embedded in the hexagonal hole, and the hexagonal sleeve 21 has an interference fit with the hexagonal hole. An external threaded barrel 8 is fixed to the outside of the vertical plate 2, and the external threaded barrel 8 is welded to the vertical plate 2. An external hexagonal barrel 20 is inserted into the hexagonal sleeve 21, and the external hexagonal barrel 20 is inserted into the external threaded barrel 8, and the end of the external hexagonal barrel 20 is exposed on the outside of the external threaded barrel 8. The exposed end of the external hexagonal barrel 20 is fixed to a positioning wheel 19 by a screw. The positioning wheel 19 is rotatably connected to the threaded cover 7. The threaded cover 7 is a rotating body and has a central cavity. The central cavity is closed at one end and open at the other end. The wall of the central cavity has an internal thread that matches the external thread on the external threaded barrel 8. The closed end of the threaded cover 7 has a center hole, and the inner and outer ends of the positioning wheel 19 are provided with flanges. The positioning wheel 19 is adapted to be inserted into the corresponding center hole, and the inner and outer end flanges of the positioning wheel 19 are respectively fitted on both sides of the closed end of the threaded cover 7, so that the positioning wheel 19 and the threaded cover 7 are both rotationally connected and clamped, and the positioning wheel 19 and the threaded cover 7 are kept axially relatively fixed. The center line of the positioning wheel 19 is in the same vertical plane as the center line of the threaded cover 7. The outer hexagonal cylinder 20 has a cylindrical cavity adapted to the support shaft 3, and the support shaft 3 is rotationally connected in the outer hexagonal cylinder 20. A fixed frame 13 and a connecting frame 14 are provided on the top of the cross plate 1. The fixed frame 13 is fixed to the cross plate 1 by bolts. Limiting grooves 16 are provided on both sides of the interior of the fixed frame 13. Limiting blocks 17 are fixed on both sides of the bottom end of the connecting frame 14 by screws. The limiting blocks 17 are slidably embedded in the limiting grooves 16, so that the connecting frame 14 is slidably connected to the interior of the fixed frame 13. A mounting frame 5 is fixed to the top of the connecting frame 14. The mounting frame 5 is provided with a horizontal support roller 6. The two ends of the support roller 6 are rotatably connected to the mounting frame 5. A support spring 15 is provided between the horizontal plate 1 and the mounting frame 5. The support spring 15 is located at both ends of the interior of the fixed frame 13. The top of the support spring 15 is welded to the mounting frame 5, and the bottom of the support spring 15 is welded to the horizontal plate 1.

[0024] The present invention is used in conjunction with a film winding device, which includes two opposing push rollers and three guide rollers. The two push rollers are arranged one above the other in a vertical direction. The contact line between the two push rollers is at the same height as the highest point of the support shaft 3. The push roller is located upstream of the support shaft 3. Among the three guide rollers, the first is located upstream of the support shaft 3, the second is located downstream of the support shaft 3, and the third is located upstream of the support shaft 3. The first and second guide rollers are located behind the support roller 6, and the third is located in front of the support roller 6. The positioning clamp 4 is also located in front of the support roller 6. Before processing, the cut steel sheet to be rolled into a cylindrical pin is placed between the two sets of positioning clamps 4. Then, the rotating wheel 9 drives the bidirectional screw 12 to rotate. While the bidirectional screw 12 rotates, it drives the connecting plates 10 on both sides to move toward the middle through the threaded sleeve 11. The connecting plates 10 then drive the positioning clamps 4 to move and fit on both sides of the steel sheet, which can effectively limit the position of the steel sheet to prevent the steel sheet from shifting during rolling and affecting the processing accuracy of the workpiece. Start the pushing rollers, keep both sides of the steel sheet against the positioning clamps 4, and push the steel sheet by hand so that the front end of the steel sheet is inserted into the gap between the two pushing rollers. The pushing rollers clamp the steel sheet and push it downstream. After being guided by the guide rollers, it curls up and wraps around the support shaft 3 to form a cylindrical pin. During the rolling process, the support spring 15 inside the fixed frame 13 can push the mounting frame 5 to drive the support roller 6 to rise, so that the support roller 6 is always in contact with the bottom of the steel sheet, thereby supporting it to improve the stability during rolling, and the limit blocks 17 on both sides of the connecting frame 14 are in contact with the limiting groove 16 to limit the connecting frame 14, thereby improving the stability of the support roller 6, so as to further improve the stability of the support of the steel sheet. After the rolling is completed, the threaded cover 7 can be rotated to disengage it from the external threaded tube 8, and then the threaded cover 7 is pulled to drive the external hexagonal tube 20 to move to one side through the positioning wheel 19, so that the external hexagonal tube 20 is disengaged from the support shaft 3. The support shaft 3 can be translated and removed from the through groove 18, thereby removing the cylindrical pin workpiece wound on the outside of the support shaft 3.

[0025] Example 2:

[0026] A tooling fixture for preventing rolled cylindrical pins from skewing, comprising a horizontal plate 1, with each end of the horizontal plate 1 being fixedly connected to a vertical plate 2, the center line of the horizontal plate 1 and the center line of the vertical plate 2 being in the same vertical plane, positioning splints 4 being provided at both ends of the horizontal plate 1, the positioning splints 4 being slidably connected to the horizontal plate 1, and being able to move synchronously toward or away from each other to achieve opening and closing, an adjustment structure for adjusting the spacing between the positioning splints being provided between the two vertical plates 2, the adjustment structure comprising a bidirectional screw rod 12 and a threaded sleeve 11, the two ends of the bidirectional screw rod 12 being rotationally connected to the two vertical plates 2 in a one-to-one correspondence, the bidirectional screw rod 12 being provided with two sections of threads of equal length and opposite rotation directions, the threaded sleeve 11 having an internal thread, the internal threads of the two threaded sleeves 11 being screwed together in a one-to-one correspondence with the two sections of threads on the bidirectional screw rod 12 to form a threaded connection. One end of the bidirectional screw rod 12 passes through the vertical plate 2 and is fixedly connected to the wheel 9. The centerline of the wheel 9 and the centerline of the bidirectional screw rod 12 are in the same vertical plane. Two threaded sleeves 11 are symmetrically distributed on the bidirectional screw rod 12 on either side of the midpoint of the bidirectional screw rod 12. Two positioning clamps 4 are fixed to the two threaded sleeves 11 in a one-to-one correspondence. A slide groove 22 is provided on the horizontal plate 1. The slide groove 22 is located on the central axis of the horizontal plate 1 and extends along the length of the horizontal plate 1. A connecting plate 10 is fixed to the bottom end of the positioning clamp 4. The connecting plate 10 is integrally formed with the positioning clamp 4 and is adapted to be inserted into the slide groove 22, so that the positioning clamp 4 is slidably connected to the slide groove 22, thereby achieving a sliding connection with the horizontal plate 1. The positioning clamp 4 has a through slot 18, which opens at one side edge of the positioning clamp 4. A detachable support shaft 3 is installed in the through slot 18. The centerline of the through slot 18 is perpendicular and coplanar with the centerline of the support shaft 3.

[0027] The difference from the first embodiment is that the present embodiment does not include the fixing frame 13, the connecting frame 14, the mounting frame 5 for the supporting roller 6 and the supporting spring 15. The rest is the same as the first embodiment.

[0028] The present invention is used in conjunction with a film winding device, which includes two opposing push rollers and three guide rollers. The two push rollers are arranged one above the other in a vertical direction. The contact line between the two push rollers is at the same height as the highest point of the support shaft 3. The push roller is located upstream of the support shaft 3. Among the three guide rollers, the first is located upstream of the support shaft 3, the second is located downstream of the support shaft 3, and the third is located upstream of the support shaft 3. The first and second guide rollers are located behind the support roller 6, and the third is located in front of the support roller 6. The positioning clamp 4 is also located in front of the support roller 6. Before processing, the cut steel sheet to be rolled into a cylindrical pin is placed between the two sets of positioning clamps 4. Then, the rotating wheel 9 drives the bidirectional screw 12 to rotate. While the bidirectional screw 12 rotates, it drives the connecting plates 10 on both sides to move toward the middle through the threaded sleeve 11. The connecting plates 10 then drive the positioning clamps 4 to move and fit on both sides of the steel sheet, which can effectively limit the position of the steel sheet to prevent the steel sheet from shifting during rolling and affecting the processing accuracy of the workpiece. The push rollers are activated, and while the two sides of the steel sheet are kept against the positioning clamps 4, the steel sheet is pushed manually so that the front end of the steel sheet is inserted into the gap between the two push rollers. The push rollers clamp the steel sheet and push it downstream. After being guided by the guide rollers, it is curled and wrapped around the support shaft 3 to form a cylindrical pin. After the coiling is completed, the threaded cap 7 can be rotated to separate it from the external threaded barrel 8. Then, the threaded cap 7 is pulled to move the external hexagonal barrel 20 to one side via the positioning wheel 19. After the external hexagonal barrel 20 is separated from the support shaft 3, the support shaft 3 can be translated and removed from the through slot 18, thereby removing the cylindrical pin workpiece wrapped around the support shaft 3.

[0029] Example 3:

[0030] like Figures 1 to 4As shown, a tooling fixture for preventing rolled cylindrical pins from tilting comprises a horizontal plate 1, with each end of the horizontal plate 1 being fixedly connected to a vertical plate 2, the center line of the horizontal plate 1 and the center line of the vertical plate 2 being in the same vertical plane, and positioning clamps 4 being provided at both ends of the horizontal plate 1, which are slidably connected to the horizontal plate 1 and can be synchronously moved toward or away from each other to achieve opening and closing, and an adjustment structure for adjusting the spacing between the positioning clamps is provided between the two vertical plates 2, the adjustment structure comprises a bidirectional screw rod 12 and a threaded sleeve 11, both ends of the bidirectional screw rod 12 are rotationally connected to the two vertical plates 2 in a one-to-one correspondence, the bidirectional screw rod 12 is provided with two sections of threads of equal length and opposite rotation directions, the threaded sleeve 11 has an internal thread, and the internal threads of the two threaded sleeves 11 are screwed together with the two sections of threads on the bidirectional screw rod 12 in a one-to-one correspondence to form a threaded connection. One end of the bidirectional screw rod 12 passes through the vertical plate 2 and is fixedly connected to the wheel 9. The centerline of the wheel 9 and the centerline of the bidirectional screw rod 12 are in the same vertical plane. Two threaded sleeves 11 are symmetrically distributed on the bidirectional screw rod 12 on either side of the midpoint of the bidirectional screw rod 12. Two positioning clamps 4 are fixed to the two threaded sleeves 11 in a one-to-one correspondence. A slide groove 22 is provided on the horizontal plate 1. The slide groove 22 is located on the central axis of the horizontal plate 1 and extends along the length of the horizontal plate 1. A connecting plate 10 is fixed to the bottom end of the positioning clamp 4. The connecting plate 10 is integrally formed with the positioning clamp 4 and is adapted to be inserted into the slide groove 22, so that the positioning clamp 4 is slidably connected to the slide groove 22, thereby achieving a sliding connection with the horizontal plate 1. The positioning clamp 4 has a through slot 18, which opens at one side edge of the positioning clamp 4. A detachable support shaft 3 is installed in the through slot 18. The centerline of the through slot 18 is perpendicular and coplanar with the centerline of the support shaft 3.

[0031] Unlike Example 1, this embodiment also features a support shaft mounting slot on the vertical plate 2, similar to the through slot 18 on the positioning clamping plate 4, for mounting the support shaft 3. The support shaft mounting slot is blind at one end and open at the other, opening at the side edge of the vertical plate 2. The blind end is curved and mates with the outer circumference of the support shaft 3. The open end is connected to a closed stopper via screws. The closed stopper comprises a stopper body and a stopper mounting plate. The stopper body and the connecting plate are vertically welded to form a T-shape. The stopper body fits snugly into the support shaft mounting slot and abuts against the support shaft 3. The free end of the stopper body is curved and mates with the outer circumference of the support shaft 3. The stopper mounting plate is screwed to the vertical plate 2. A fixing frame 13 and a connecting frame 14 are provided at the top of the transverse plate 1. The fixing frame 13 is fixed to the transverse plate 1 by bolts. Limiting slots 16 are provided on both sides of the interior of the fixing frame 13. Limiting blocks 17 are fixed to both sides of the bottom end of the connecting frame 14 by screws. The limiting blocks 17 are slidably embedded in the limiting slots 16, so that the connecting frame 14 is slidably connected to the interior of the fixing frame 13. A mounting frame 5 is fixed to the top of the connecting frame 14. The mounting frame 5 is provided with a horizontal support roller 6, and the two ends of the support roller 6 are rotatably connected to the mounting frame 5. A support spring 15 is provided between the transverse plate 1 and the mounting frame 5. The support spring 15 is located at both ends of the interior of the fixing frame 13. The top of the support spring 15 is welded to the mounting frame 5, and the bottom of the support spring 15 is welded to the transverse plate 1. The rest is the same as in Example 1.

[0032] The present invention is used in conjunction with a film winding device, which includes two opposing push rollers and three guide rollers. The two push rollers are arranged one above the other in a vertical direction. The contact line between the two push rollers is at the same height as the highest point of the support shaft 3. The push roller is located upstream of the support shaft 3. Among the three guide rollers, the first is located upstream of the support shaft 3, the second is located downstream of the support shaft 3, and the third is located upstream of the support shaft 3. The first and second guide rollers are located behind the support roller 6, and the third is located in front of the support roller 6. The positioning clamp 4 is also located in front of the support roller 6. Before processing, the cut steel sheet to be rolled into a cylindrical pin is placed between the two sets of positioning clamps 4. Then, the rotating wheel 9 drives the bidirectional screw 12 to rotate. While the bidirectional screw 12 rotates, it drives the connecting plates 10 on both sides to move toward the middle through the threaded sleeve 11. The connecting plates 10 then drive the positioning clamps 4 to move and fit on both sides of the steel sheet, which can effectively limit the position of the steel sheet to prevent the steel sheet from shifting during rolling and affecting the processing accuracy of the workpiece. The push rollers are started, and while keeping both sides of the steel sheet against the positioning clamps 4, the steel sheet is pushed manually so that the front end of the steel sheet is inserted into the gap between the two push rollers. The push rollers clamp the steel sheet and push it downstream. After being guided by the guide rollers, it is curled and wrapped around the support shaft 3 to form a cylindrical pin. During the rolling process, the support spring 15 inside the fixed frame 13 can push the mounting frame 5 to drive the support roller 6 to rise, so that the support roller 6 always fits the bottom of the steel sheet, thereby supporting it and improving the stability during rolling. In addition, the limit blocks 17 on both sides of the connecting frame 14 fit inside the limit grooves 16 to limit the connecting frame 14, thereby improving the stability of the support roller 6 and further improving the stability of the steel sheet support. After the rolling is completed, the screws on the closed block can be removed, the closed block can be pulled out, and the support shaft 3 can be translated and removed from the through groove 18 and the support shaft mounting groove, thereby removing the cylindrical pin workpiece wrapped around the support shaft 3.

Claims

1. A fixture for preventing the skew of a rolled cylindrical pin, comprising a horizontal plate (1), characterized in that: A vertical plate (2) is provided at each end of the horizontal plate (1), and a positioning clamp (4) that can be opened and closed is slidably connected to the two ends of the horizontal plate (1). An adjustment structure for adjusting the spacing between the positioning clamps is provided between the two vertical plates (2), and the adjustment structure includes a bidirectional screw rod (12) rotatably connected to the two vertical plates (2), and two threaded sleeves (11) corresponding to and fixed to the positioning clamp (4) are threadedly connected to the bidirectional screw rod (12).

2. A fixture for preventing the coiled cylindrical pin from deflecting according to claim 1, characterized in that: A slide groove (22) is provided on the transverse plate (1), and the positioning clamping plate (4) is slidably connected in the slide groove (22).

3. A fixture for preventing the coiled cylindrical pin from deflecting according to claim 2, characterized in that: A connecting plate (10) is fixed to the bottom end of the positioning splint (4), and the connecting plate (10) is slidably connected in the sliding groove (22).

4. A fixture for preventing the coiled cylindrical pin from deflecting according to claim 1, characterized in that: A hexagonal sleeve (21) is embedded in the vertical plate (2), an external threaded tube (8) is fixed on the outside of the vertical plate (2), an external hexagonal tube (20) is connected inside the hexagonal sleeve (21), the external hexagonal tube (20) passes through the external threaded tube (8), a support shaft (3) is rotatably connected inside the external hexagonal tube (20), a positioning wheel (19) is fixed at the end of the external hexagonal tube (20), a threaded cover (7) that cooperates with the external threaded tube (8) is rotatably clamped outside the positioning wheel (19), and the threaded cover (7) is threadedly connected to the external threaded tube (8).

5. A fixture for preventing the coiled cylindrical pin from deflecting according to claim 4, characterized in that: The positioning splint (4) is provided with a through slot (18) which opens at an edge of one side of the positioning splint (4).

6. The fixture for preventing the coiled cylindrical pin from deflecting according to claim 1 is characterized in that: One end of the bidirectional screw rod (12) passes through the vertical plate (2) and is fixedly connected to the rotating wheel (9).

7. A fixture for preventing the coiled cylindrical pin from deflecting according to any one of claims 1 to 6, characterized in that: A fixed frame (13) is fixed on the top of the transverse plate (1), a connecting frame (14) is slidably connected inside the fixed frame (13), a mounting frame (5) is fixed on the top of the connecting frame (14), a supporting roller (6) is provided on the mounting frame (5), a supporting spring (15) connected to the mounting frame (5) is provided in the fixed frame (13), and limiting blocks (17) are fixed on both sides of the bottom end of the connecting frame (14).

8. A fixture for preventing the coiled cylindrical pin from deflecting according to claim 7, characterized in that: Limiting grooves (16) are provided on both sides of the interior of the fixed frame (13), the limiting grooves (16) are slidably connected to the limiting blocks (17), and the supporting springs (15) are fixedly connected to the mounting frame (5).

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