Straightening machine with clamping structure

Abstract

The utility model discloses a straightening machine with clamping structure includes workstation, including workstation, corrects the box and clamping structure, the workstation upper end fixed connection fixed block, the fixed block sets up corrects the box, clamping structure sets up in fixed block outside, clamping structure includes setting up the bottom plate 9 on the workstation, set up the stand on the bottom plate, the stand upper end swing arm, swing arm's one end is connected with the stand through swing arm axle, swing arm's other end is connected with drive cylinder, drive cylinder's output end is connected with chuck chuck, and the clamping surface of chuck chuck is opposite to corrects the box. Designed clamping structure, can adjust the height of chuck chuck through swing arm axle, can carry out end face clamping to hollow core tube and realizes rotation through chuck chuck simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of straightening machine technology, and in particular to a straightening machine with a clamping structure. Background Technology

[0002] Currently, many countries have adopted automated straightening equipment technology to replace manual straightening equipment technology, among which the straightening equipment technology for hollow pipe fittings is particularly complex. In order to achieve the clamping and rotation measurement of hollow pipe fittings before straightening, the clamping device of the straightening machine needs to be able to move in multiple directions, and there are certain requirements for the accuracy of the movement displacement.

[0003] In the prior art, the clamping device of a general straightening machine is difficult to completely clamp the moving hollow pipe, and cannot achieve vertical floating adjustment of the hollow pipe to make it close to a horizontal state, which affects the straightening process and increases the error. The applicant has designed a hollow pipe clamping structure, publication number: CN215657156U, but its defect is that it cannot rotate the pipe. In view of this, the applicant hereby applies for this invention. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the clamping device of the existing straightening machine is difficult to completely clamp the moving hollow tube, and cannot achieve vertical floating adjustment of the hollow tube to make it close to a horizontal state, which affects the straightening process and increases the error. Therefore, a straightening machine with a clamping structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A straightening machine with a clamping structure includes a worktable, a straightening box, and a clamping structure. A fixing block is fixedly connected to the upper end of the worktable, and the straightening box is mounted on the fixing block. The clamping structure is located outside the fixing block and includes a base plate 9 mounted on the worktable. A column is mounted on the base plate, and a rocker arm is mounted on the upper end of the column. One end of the rocker arm is rotatably connected to the column via a rocker arm shaft, and the other end of the rocker arm is connected to a drive cylinder. The output end of the drive cylinder is connected to a chuck, and the clamping surfaces of the chuck face the straightening box.

[0007] Furthermore, the correction box is open from left to right, with an upper pressure roller group arranged at the top inside and a lower pressure roller group arranged at the bottom to cooperate with the upper pressure roller group. The lower pressure roller group includes a mounting frame and multiple lower pressure rollers that rotate on the mounting frame.

[0008] Furthermore, the upper pressure roller assembly includes multiple single pressure roller components, and the single pressure roller frame includes a box assembly. The box assembly includes two parallel first and second boxes disposed on the top and bottom surfaces, with an interval area between the first and second boxes. Both the first and second boxes are provided with sliding grooves, and support blocks are disposed at the lower ends of the sliding grooves. A lower pressure roller is disposed between the two support blocks of the first and second boxes, and the lower pressure roller is located below the interval area. The lower pressure roller is connected to the two support blocks respectively via a rotating shaft. An adjustment interval area exists where the rotating shaft passes through the side walls of the first and second boxes. Springs are disposed within the sliding grooves of both the first and second boxes, with the lower ends of the springs connected to the support blocks. Prestress adjustment components are connected to the upper ends of the springs, and these prestress adjustment components are disposed within the sliding grooves. Adjustment screws are disposed on the top surface of each prestress adjustment component, and these adjustment screws pass through the top plate.

[0009] Furthermore, each of the worktables is fixedly connected to a mounting block at its upper end, and the upper ends of the two mounting blocks are fixedly connected to the same mounting bracket. The mounting bracket has through holes at both its upper and lower ends, and vertical shafts are slidably connected to the through holes of the mounting brackets. The two vertical shafts are fixedly connected to baffles 8 at their opposite outer ends, and extrusion blocks are fixedly connected to the opposite inner sides of the two vertical shafts. The two extrusion blocks are rotatably connected to rotating wheels at their opposite inner sides.

[0010] Furthermore, through holes are provided in the middle of both side walls of the mounting bracket, and the through holes of the mounting bracket are used in conjunction with the arc-shaped plate.

[0011] Furthermore, the inner sides of both the upper and lower ends of the mounting bracket are fixedly connected with helical springs, both of which are sleeved on the vertical shaft, and the lower ends of both helical springs are fixedly connected to the side wall of the extrusion plate.

[0012] Furthermore, a lifting column is provided on the base plate, and the lifting column is located below the drive cylinder.

[0013] Furthermore, a transmission mechanism is connected to one of the lower pressure rollers near the end of the lower pressure roller group.

[0014] Compared with existing technologies, the advantages of this invention are as follows: the upper and lower pressure roller groups inside the straightening box work together to perform multi-point pressure straightening on hollow tubes. Through the rolling and pressure action of the rollers, the bent portions of the tubes can be effectively straightened, restoring them to a near-straight state and improving the straightening effect. The single pressure roller in the upper pressure roller group adopts a box-type component design, with internal springs and prestress adjustment components. This allows for flexible adjustment of pressure according to the degree of bending and material characteristics of the tube, avoiding damage to the tube while ensuring the straightening effect. A clamping structure is designed, allowing adjustment of the chuck height via a rocker arm shaft. Simultaneously, the chuck can clamp the end face of the hollow tube and enable rotation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the correction box structure.

[0017] Figure 3 This is a schematic diagram of the upper pressure roller structure.

[0018] Figure 4 This is a schematic diagram of the clamping structure.

[0019] In the diagram: 1. Workbench, 2. Correction box, 3. Fixing block, 4. Roller mounting frame, 5. Box assembly, 51. First box, 52. Second box, 53. Interval area, 54. Top plate, 55. Adjusting stud, 56. Slide groove, 561. Spring, 57. Prestressed adjustment component, 58. Support block, 59. Rotating shaft, 60. Adjustment area, 6. Upper pressure roller, 7. Lower pressure roller, 8. Gearbox, 9. Sprocket, 12. Mounting block, 13. Mounting frame, 14. Vertical shaft, 15. Extrusion block, 16. Rotary wheel, 17. Helical spring, 18. Baffle, 19. Base plate, 20. Column, 21. Lifting column, 22. Rocker arm, 23. Drive cylinder, 24. Chuck, 25. Chuck claw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A straightening machine with a clamping structure is disclosed. A fixing block 3 is fixedly connected to the upper end of a worktable 1. A straightening box 2 is mounted on the fixing block 3. The clamping structure is located outside the fixing block and includes a base plate 19 on the worktable. A column 20 is mounted on the base plate, and a rocker arm 22 is mounted on the upper end of the column. One end of the rocker arm 22 is rotatably connected to the column via a rocker arm shaft, and the other end of the rocker arm is connected to a drive cylinder 23. The output end of the drive cylinder is connected to a chuck 24, which includes multiple chuck jaws 25. The number of chuck jaws is three, evenly distributed at 120° intervals, used to clamp the end face of hollow tubes and achieve rotation. The clamping surface of the chuck faces the straightening box.

[0022] Furthermore, the straightening box 2 is open from left to right, with an upper pressure roller group arranged at the top and a lower pressure roller group arranged at the bottom to cooperate with the upper pressure roller group. The lower pressure roller group includes multiple lower pressure rollers 7 mounted on roller mounting 4 and rotating on roller mounting 4. There are 3 lower pressure rollers, evenly distributed on the roller mounting frame. The upper pressure roller group includes multiple single pressure roller components, with 3 single pressure roller components, evenly arranged along the length of the straightening box.

[0023] Furthermore, the upper pressure roller assembly includes multiple single pressure roller components, and the single pressure roller frame includes a box assembly 5. The box assembly includes two parallel first box bodies 51 and second box bodies 52 disposed on the bottom surface of the top plate 54. There is a gap area 53 between the first box body and the second box body. A sliding groove 56 is provided in both the first box body and the second box body. A support block 58 is provided at the lower end of each sliding groove. A lower pressure roller 6 is rotatably connected between the two support blocks of the first box body and the second box body. The lower pressure roller is located below the gap area and is connected to the rotating shaft 6. The rotating shaft is rotatably connected to two support blocks respectively; an adjustment area 60 exists at the position where the rotating shaft passes through the side walls of the first and second boxes; springs 561 are installed in the sliding grooves inside the first and second boxes, the lower ends of the springs are connected to the support blocks, and the upper ends of the springs are connected to prestress adjustment components 57. The prestress adjustment components are set in the sliding grooves, and the top surface of the prestress adjustment components is provided with adjustment screws 56. The adjustment screws pass through the top plate 54. By rotating the adjustment nut, the compression of the spring can be changed, thereby adjusting the prestress. The adjustment range of the prestress is 100N to 500N, which can be adjusted according to the material and bending degree of the pipe fitting.

[0024] The upper end of the workbench 1 is fixedly connected to mounting blocks 12, and the upper ends of the two mounting blocks 12 are fixedly connected to the same mounting bracket 13. The mounting bracket 13 has through holes at both its upper and lower ends, and vertical shafts 14 are slidably connected to the through holes of the mounting bracket 13. Baffles 18 are fixedly connected to the outer ends of the two vertical shafts 14, and pressing blocks 15 are fixedly connected to the inner sides of the two vertical shafts 14. Rotary wheels 16 are rotatably connected to the inner sides of the two pressing blocks. This design allows for effective clamping of hollow pipes of different diameters, offering simple operation and a wider range of applications.

[0025] Through holes are provided in the middle of both side walls of the mounting bracket 13. These through holes are used in conjunction with the curved plate 10 to facilitate the passage of hollow pipes through the mounting bracket 13.

[0026] Both upper and lower inner sides of the mounting bracket 13 are fixedly connected to helical springs 17, and both helical springs 17 are sleeved on the vertical shaft 14. The lower ends of both helical springs 17 are fixedly connected to the side walls of the extrusion plates. Through the connection of the two helical springs 17 to the side walls of the extrusion plates, and the relatively inner sides of the two extrusion plates equipped with rotating wheels 16, it is possible to effectively clamp hollow tubes of different diameters, offering simple operation and a wider range of applications.

[0027] A lifting column 21 is provided on the base plate. The lifting column is located below the drive cylinder. The height of the lifting column is adjustable and can be used to block the drive cylinder.

[0028] One of the lower pressure rollers near the end of the lower pressure roller assembly is connected to a transmission mechanism. The transmission mechanism, installed on the bottom surface of the housing, includes a power supply and a gearbox 8. One of the lower pressure rollers is driven by a sprocket and chain 6. A sprocket is installed on the lower pressure roller, and the sprocket is connected to the gearbox. The gearbox drives the sprocket and realizes the rotation of the lower pressure roller, thereby realizing the rotational correction function of the lower pressure roller.

[0029] This design utilizes a straightening box to straighten hollow pipe fittings. Inside the straightening box, an upper pressure roller assembly is located at the top, and a lower pressure roller assembly, which works in conjunction with the upper pressure roller assembly, is located at the bottom. When the hollow pipe fitting passes through the straightening box, the upper and lower pressure roller assemblies apply pressure to the fitting. Through the rolling and pressure action of the rollers, the bent portions of the fitting are straightened, restoring it to a near-straight state. Simultaneously, a clamping structure can clamp and rotate the hollow pipe fitting at its end face, maintaining stability during the straightening process. Furthermore, the position and angle of the fitting can be adjusted as needed to further improve the straightening effect.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A straightening machine with a clamping structure, comprising a worktable (1), a straightening box (2), and a clamping structure, characterized in that: The upper end of the workbench (1) is fixedly connected to a fixing block (3), and the fixing block (3) is provided with a correction box (2). The clamping structure is located on the outside of the fixing block. The clamping structure includes a base plate (19) on the workbench, a column (20) on the base plate, a rocker arm installed on the upper end of the column, one end of the rocker arm (22) being rotatably connected to the column through a rocker arm shaft, and the other end of the rocker arm being connected to a drive cylinder (23). The output end of the drive cylinder is connected to a chuck, and the clamping surface of the chuck is opposite to the correction box.

2. A straightening machine with a clamping structure according to claim 1, characterized in that: The correction box (2) is open from left to right. An upper pressure roller group is set at the top inside, and a lower pressure roller group that cooperates with the upper pressure roller group is set at the bottom. The lower pressure roller group includes a roller mounting frame and multiple lower pressure rollers that rotate on the roller mounting frame.

3. A straightening machine with a clamping structure according to claim 2, characterized in that: The upper pressure roller assembly includes multiple single pressure roller components. The single pressure roller frame includes a box assembly (5). The box assembly includes two parallel first box bodies (51) and second box bodies (52) disposed on the bottom surface of the top plate (54). There is a gap area (63) between the first box bodies and the second box bodies. A sliding groove (56) is provided in both the first box bodies and the second box bodies. A support block (58) is provided at the lower end of each sliding groove. A lower pressure roller (6) is disposed between the two support blocks of the first box bodies and the second box bodies. The lower pressure roller is located in the gap area. Below, the lower pressure roller is connected to two support blocks respectively via a rotating shaft (60); there is an adjustment interval area (60) where the rotating shaft passes through the side wall of the first box and the second box; springs (561) are provided in the sliding grooves inside the first box and the second box, the lower ends of the springs are connected to the support blocks, and the upper ends of the springs are connected to prestress adjustment components (57). The prestress adjustment components are set in the sliding grooves, and the top surface of the prestress adjustment components is provided with adjustment screws (56), which pass through the top plate.

4. A straightening machine with a clamping structure according to claim 1, characterized in that: The upper end of the workbench (1) is fixedly connected to the mounting block (12), and the upper end of the two mounting blocks (12) is fixedly connected to the same mounting frame (13). The upper and lower ends of the mounting frame (13) are opened with through holes. The vertical shaft (14) is slidably connected to the through hole of the mounting frame (13). The two vertical shafts (14) are fixedly connected to the outer ends of the two vertical shafts (14). The two vertical shafts (14) are fixedly connected to the inner sides of the two vertical shafts (14). The two extrusion plates are rotatably connected to the inner sides of the two extrusion plates.

5. A straightening machine with a clamping structure according to claim 4, characterized in that: Through holes are provided in the middle of both sides of the mounting bracket (13), and the through holes provided in the mounting bracket (13) are used in conjunction with the arc plate (10).

6. A straightening machine with a clamping structure according to claim 4, characterized in that: The mounting bracket (13) has helical springs (17) fixedly connected to the inner sides of both the upper and lower ends. Both helical springs (17) are sleeved on the vertical shaft (14), and the lower ends of both helical springs (17) are fixedly connected to the side wall of the extrusion plate.

7. A straightening machine with a clamping structure according to claim 4, characterized in that: A lifting column is installed on the base plate, and the lifting column is located below the drive cylinder.

8. A straightening machine with a clamping structure according to claim 4, characterized in that: One of the lower pressure rollers near the end of the lower pressure roller group is connected to a transmission mechanism.

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