Angle-adjustable copper straightening device

Abstract

The application discloses a kind of copper material straightening device of adjustable angle, belong to straightening machine technical field, including shell, the shell is equipped with several bearing rollers, the middle part of bearing roller is equipped with V-shaped ring groove, the arc slot is opened in bearing roller, the arc slot and bearing roller are coaxial, the arc slot is equipped with the arc backing board that can be pushed into V-shaped ring groove;The upper portion of shell is fixedly connected with rack, the rack is equipped with lifting connecting piece, the lifting connecting piece is rotatably connected with press roll, the edge of press roll is equipped with sleeve ring, the inner ring of sleeve ring is fixedly connected with first clamping block, the edge of press roll is equipped with first clamping groove, and the first clamping block is clamped in the first clamping groove.This application can be suitable for two kinds of copper materials, one of which is V-shaped, with a sharp end below;No.2 copper material has a flat surface at the sharp end of V-shaped.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of straightening machine, and particularly relates to an angle-adjustable copper material straightening device. BACKGROUND

[0002] Copper material is widely used in electrical, construction, electronic and other industries due to its good electrical conductivity and ductility. In actual production process, in order to ensure the quality of subsequent processing, copper material often needs to be straightened, especially for copper profiles after extrusion or drawing, which often have different degrees of bending, twisting or irregular deformation. Therefore, developing efficient, stable and adaptable copper material straightening equipment has become a key link to improve the processing quality and production efficiency of copper material.

[0003] The existing copper material straightening device is mainly used for straightening copper profiles with a single cross-sectional shape. Its structure is mainly composed of fixed bearing rollers and pressure rollers. The straightening is achieved by applying extrusion force on the copper material by the upper and lower rollers. However, with the increasing variety of products, the cross-sectional forms of copper materials are becoming more and more diverse. For example, the common No. 1 copper material has a V-shaped cross-section, while the No. 2 copper material may be a special-shaped material with a flat bottom. The traditional equipment often cannot adapt to multiple cross-sectional shapes at the same time. If different specifications of copper materials need to be straightened, the whole set of bearing rollers or pressure roller structure needs to be replaced, which is complicated and inefficient, and there is a large manual error. In addition, the existing equipment often relies on external clamps or temporary shims when adjusting the height of the pressure roller or adapting the components, which makes it difficult to ensure stability and straightening accuracy, and may cause surface damage or uneven straightening of the copper material. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides an angle-adjustable copper material straightening device, which has the advantages of being applicable to two types of copper materials and solving the problems of the prior art.

[0005] The present application is implemented as follows: an angle-adjustable copper material straightening device, comprising a machine shell, a plurality of bearing rollers are arranged in the machine shell, a V-shaped ring groove is arranged in the middle of the bearing roller, an arc-shaped groove is arranged in the bearing roller, the arc-shaped groove and the bearing roller are coaxial, and an arc-shaped pad capable of being pushed into the V-shaped ring groove is arranged in the arc-shaped groove; a rack is fixedly connected above the machine shell, a lifting connecting piece is arranged on the rack, a pressure roller is rotatably connected to the lifting connecting piece, a sleeve ring is arranged at the edge of the pressure roller, a first clamping block is fixedly connected to the inner ring of the sleeve ring, a first clamping groove is arranged at the edge of the pressure roller, and the first clamping block is clamped in the first clamping groove.

[0006] As a preferred embodiment of the present application, the sleeve ring is arranged as a plurality of concentric sub-layers, the innermost layer is connected to the pressure roller through the first clamping block and the first clamping groove, and the other sub-layers outside the innermost layer are clamped to each other through protrusions and recesses; the arc-shaped pad is arranged as a plurality of coaxial layers.

[0007] As the application is preferred, the bearing roller comprises: a bearing seat, a first roller shaft, a roller body; the bearing seat is fixedly connected to the machine shell; the first roller shaft is rotatably connected to the bearing seat, one end of the first roller shaft is provided with a first rotary driving member; the roller body is sleeved on the first roller shaft, and is coaxial with the first roller shaft, and the arc-shaped groove and the V-shaped ring groove are both located on the roller body.

[0008] As the application is preferred, the machine frame is provided with a vertically arranged slide; the lifting connecting piece comprises a sliding block, a bearing rod, an upper fastening ring and a lower fastening ring; the sliding block is slidingly connected to the slide; the bearing rod is provided with an external thread, the bearing rod is connected to the machine frame through the external thread, and the lower end of the bearing rod is rotatably connected to the sliding block through a bearing; the upper fastening ring and the lower fastening ring are both connected to the external thread and are respectively attached to the upper and lower sides of the machine frame.

[0009] As the application is preferred, the pressure roller comprises a second roller shaft and a roller disc; the second roller shaft is rotatably connected to the sliding block through a bearing, and the end of the second roller shaft is connected with a second rotary driving member; the roller disc is sleeved on the second roller shaft, and the sleeve ring is connected to the outer edge of the roller disc.

[0010] As the application is preferred, the roller disc comprises two mutually opposite half discs, the inner ring surface of the half disc is provided with a second clamping groove, and the second roller shaft is provided with a clamping strip, and the clamping strip is clamped in the second clamping groove.

[0011] As the application is preferred, the second roller shaft is a stepped shaft; the two ends of the half disc are both provided with threaded grooves, threaded studs are rotatably connected in the threaded grooves through threads, the end of the threaded stud is fixedly connected with a stop block, and the stop block is attached to the stepped portion of the second roller shaft.

[0012] As the application is preferred, the roller body comprises a first half roller and a second half roller; the arc-shaped groove comprises two symmetrically arranged sub-grooves, one of which is arranged on the first half roller, and the other is arranged on the second half roller; the lower side of each of the two sub-grooves is provided with a third clamping groove, a second clamping block is fixedly connected to the arc-shaped backing plate, and the second clamping block is clamped in the third clamping groove.

[0013] As the application is preferred, the first roller shaft is provided with a slot, the first half roller and / or the second half roller is provided with a insertion hole, the insertion hole is aligned with the slot; a insertion rod is slidingly connected in the insertion hole, the end of the insertion rod away from the slot is provided with an inclined surface, a spring is arranged in the insertion hole, and the spring is connected to the insertion rod; one end of the insertion rod is inserted into the slot, and the other end of the insertion rod is attached to the arc-shaped backing plate.

[0014] As preferred of the present application, the outer side of the arc-shaped base plate is fixedly connected with a connecting rod, and the end of the connecting rod is fixedly connected with a fixing ring; the first roller shaft is provided with an annular groove, and the annular groove is located at the edge of the roller body; when the sleeve ring is separated from the compression roller, the sleeve ring can extend inside the annular groove, and the side of the sleeve ring is attached to the outer side of the fixing ring.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The present application supports the copper material by the bearing roller in the machine shell and stabilizes the copper material by the V-shaped ring groove. For different models of copper materials, by adjusting whether the arc-shaped base plate extends into the V-shaped ring groove and the combination mode of the sleeve ring and the compression roller, the straightening of different copper materials is realized. Specifically, for a first copper material, the arc-shaped base plate does not extend into the V-shaped ring groove, and the sleeve ring and the compression roller straighten together; for a second copper material, the arc-shaped base plate extends into the V-shaped ring groove, and the side surface and the edge surface of the compression roller extrude the inside of the copper material to adapt to the bottom plane. The straightening device has high flexibility and adaptability, can quickly switch the straightening mode to adapt to different models of copper materials, does not need to replace or disassemble the entire device, thereby saving time and labor cost and improving the utilization rate and production efficiency of the device. At the same time, through accurate component design and reliable clamping structure, the stability and high precision of the straightening process are ensured, and the processing quality of the copper material is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective structural schematic view of the adjustable-angle copper material straightening device provided by the embodiment of the present application;

[0018] Figure 2 is a perspective structural schematic view of the adjustable-angle copper material straightening device provided by the embodiment of the present application; Figure 1 is an enlarged structural schematic view of part A in the figure;

[0019] Figure 3 is an enlarged structural schematic view of part C in the figure; Figure 2 is an enlarged structural schematic view of part C in the figure;

[0020] Figure 4 is an enlarged structural schematic view of part B in the figure; Figure 1 is an enlarged structural schematic view of part B in the figure;

[0021] Figure 5 is an enlarged structural schematic view of part D in the figure; Figure 4 is an enlarged structural schematic view of part D in the figure;

[0022] Figure 6 is a front view structural schematic view of the adjustable-angle copper material straightening device provided by the embodiment of the present application;

[0023] Figure 7 is a front view structural schematic view of the adjustable-angle copper material straightening device provided by the embodiment of the present application; Figure 6A cross-sectional view of the EE section;

[0024] Figure 8 This is provided by the embodiments of the present invention. Figure 7 A magnified structural diagram of section F in the middle;

[0025] Figure 9 This is a front view structural diagram of the frame and lifting connector provided in an embodiment of the present invention.

[0026] In the diagram: 1. Machine housing; 2. Bearing roller; 3. V-shaped annular groove; 4. Arc groove; 5. Arc pad; 6. Frame; 7. Pressure roller; 8. Collar; 9. First locking block; 10. First locking groove; 11. Slider; 12. Bearing rod; 13. Upper fastening ring; 14. Lower fastening ring; 15. Second locking groove; 16. Locking strip; 17. Threaded groove; 18. Stud; 19. Stop block; 20. Third locking groove; 21. Second locking block; 22. Slot; 23. Insertion hole; 24. Insert rod; 25. Beveled surface; 26. Spring; 27. Connecting rod; 28. Fixing ring; 29. ​​Annular groove; 201. Bearing seat; 202. First roller shaft; 203. Roller body; 2031. First half roller; 2032. Second half roller; 701. Second roller shaft; 702. Roller disc. Detailed Implementation

[0027] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0028] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 9 As shown in the figure, an adjustable-angle copper straightening device provided in this embodiment of the invention includes a housing 1, a plurality of bearing rollers 2 are provided in the housing 1, a V-shaped annular groove 3 is provided in the middle of the bearing roller 2, an arc-shaped groove 4 is provided in the bearing roller 2, the arc-shaped groove 4 and the bearing roller 2 are coaxial, and an arc-shaped pad 5 that can be pushed into the V-shaped annular groove 3 is provided in the arc-shaped groove 4; a frame 6 is fixedly connected above the housing 1, a lifting connector is provided on the frame 6, a pressure roller 7 is rotatably connected to the lifting connector, a collar 8 is provided on the edge of the pressure roller 7, a first locking block 9 is fixedly connected to the inner ring of the collar 8, a first locking groove 10 is provided on the edge of the pressure roller 7, and the first locking block 9 is engaged with the first locking groove 10.

[0030] In use, first, the bearing roller 2 arranged in the shell 1, the V-shaped ring groove 3 on it is used to support the V-shaped copper material, ensuring the stability of the copper material during straightening. For the straightening of the first copper material, the arc-shaped backing plate 5 does not extend into the V-shaped ring groove 3, and the sleeve ring 8 is sleeved on the edge of the pressing roller 7, and the V-shaped copper material is straightened by the sleeve ring 8 and the pressing roller 7 together. When the second copper material needs to be processed, first remove the sleeve ring 8, and push the arc-shaped backing plate 5 into the V-shaped ring groove 3, and press the inside of the second profile through the side and edge surface of the pressing roller 7, so as to adapt to the bottom plane of the second copper material, thereby realizing the straightening of two different copper materials.

[0031] The advantage of this straightening device is its high flexibility and adaptability. It does not need to replace or disassemble the entire equipment, but only needs to adjust the components to switch from the straightening mode of the first copper material to the second copper material. This not only saves time and labor cost, but also improves the utilization rate and production efficiency of the equipment. In addition, through precise component design and reliable clamping structure, the stability and high precision during straightening are ensured, effectively improving the processing quality of the copper material.

[0032] Further, the sleeve ring 8 is provided with concentric sub-layers, and the innermost layer is connected to the pressing roller 7 through the first clamping block 9 and the first clamping groove 10, and the other sub-layers outside the innermost layer are clamped with each other through protrusions and recesses; the arc-shaped backing plate 5 is provided with coaxial layers. Through this setting, the sleeve ring 8 is composed of concentric sub-layers, and the innermost layer is connected to the pressing roller 7 through the first clamping block 9 and the first clamping groove 10, which ensures the stability and accurate control of the pressing roller 7. The other sub-layers outside the innermost layer are clamped with each other through protrusions and recesses. This design allows the operator to adjust the thickness of the sleeve ring 8 as needed to adapt to the bottom plane of the second copper material of different widths. The arc-shaped backing plate 5 is also designed as coaxial layers, and this structure allows the backing plate to be adjusted according to the width and shape of the copper material. By selecting the appropriate layer of the arc-shaped backing plate 5, appropriate support can be provided for second copper materials of different sizes to ensure stability and accuracy during straightening. This multi-layer sleeve ring 8 and arc-shaped backing plate 5 design enhances the adaptability of the straightening device, allowing it to flexibly cope with the straightening needs of different specifications of the second copper material. The operator does not need to replace or disassemble the equipment, but only needs to adjust the components to quickly switch, thereby improving production efficiency and equipment utilization.

[0033] Specifically, the bearing roller 2 comprises: a bearing seat 201, a first roller shaft 202, and a roller body 203; the bearing seat 201 is fixedly connected to the shell 1; the first roller shaft 202 is rotatably connected to the bearing seat 201, and one end of the first roller shaft 202 is provided with a first rotation driving member; the roller body 203 is sleeved on the first roller shaft 202 and coaxial with the first roller shaft 202, and the arc-shaped groove 4 and the V-shaped ring groove 3 are both located on the roller body 203.

[0034] Specifically, the rack 6 is provided with a vertical slide; the lifting connecting piece comprises a sliding block 11, a bearing rod 12, an upper fastening ring 13 and a lower fastening ring 14; the sliding block 11 is slidingly connected to the slide; the bearing rod 12 is provided with external threads, the bearing rod 12 is connected to the rack 6 through the external threads, and the lower end of the bearing rod 12 is rotatably connected to the sliding block 11 through a bearing; the upper fastening ring 13 and the lower fastening ring 14 are both connected to external threads and respectively attached to the upper and lower sides of the rack 6.

[0035] By rotating the bearing rod 12, the height of the bearing rod 12 can be adjusted, and the height of the compression roller 7 is adjusted. Through this setting, it can be suitable for different thicknesses of the first copper material and the second copper material. For example, for the first copper material or the second copper material with a larger thickness, the height of the compression roller 7 can be increased.

[0036] Specifically, the compression roller 7 comprises a second roller shaft 701 and a roller disc 702; the second roller shaft 701 is rotatably connected to the sliding block 11 through a bearing, and the end of the second roller shaft 701 is connected with a second rotary driving piece; the roller disc 702 is sleeved on the second roller shaft 701, and the sleeve ring 8 is connected to the outer edge of the roller disc 702. The first rotary driving piece and the second rotary driving piece can both be set as a combination of a motor, a chain wheel and a chain, and are respectively used for driving the first roller shaft 202 and the second roller shaft 701 to rotate.

[0037] Specifically, the roller disc 702 comprises two mutually opposite half discs, the inner ring surface of the half disc is provided with a second clamping groove 15, the second roller shaft 701 is provided with a clamping strip 16, and the clamping strip 16 is clamped in the second clamping groove 15. Through this setting, when replacement is needed, the two half discs can be axially moved to make the clamping strip 16 and the second clamping groove 15 disengage, so as to be disassembled. Through this setting, different roller discs 702 can be replaced, so as to be suitable for copper materials with different included angles.

[0038] Further, the second roller shaft 701 is a stepped shaft; the two ends of the half disc are both provided with a threaded groove 17, a stud 18 is rotatably connected in the threaded groove 17 through threads, the end of the stud 18 is fixedly connected with a stop block 19, and the stop block 19 is attached to the stepped portion of the second roller shaft 701. Through this setting, the stud 18 can fix the two half discs to prevent axial movement.

[0039] Preferably, the threaded groove 17 is composed of two aligned half threaded grooves 17, and the two half threaded grooves 17 are respectively located on the two half discs. Through this setting, the positions of the two half discs can be defined by the two coaxially arranged studs 18.

[0040] Further, the roller body 203 comprises a first half roller 2031 and a second half roller 2032; the arc-shaped groove 4 comprises two symmetrically arranged sub-grooves, one of which is arranged on the first half roller 2031, and the other is arranged on the second half roller 2032; the lower side of each of the two sub-grooves is provided with a third clamping groove 20, and the arc-shaped pad plate 5 is fixedly connected with a second clamping block 21 which is clamped in the third clamping groove 20. Through the arrangement, the first half roller 2031 and the second half roller 2032 can be disassembled, so that the roller body 203 can be replaced, and the device is suitable for copper materials with different included angles. The arc-shaped pad plate 5 can not only be pushed into the V-shaped ring groove 3 and be suitable for the second copper material, but also can fix the first half roller 2031 and the second half roller 2032 through the second clamping block 21.

[0041] Further, the first roller shaft 202 is provided with a slot 22, the first half roller 2031 and / or the second half roller 2032 is provided with a insertion hole 23, the insertion hole 23 is aligned with the slot 22; the insertion hole 23 is slidably connected with an insertion rod 24, the end of the insertion rod 24 away from the slot 22 is provided with an inclined surface 25, the insertion hole 23 is provided with a spring 26, and the spring 26 is connected to the insertion rod 24; one end of the insertion rod 24 is inserted into the slot 22, and the other end of the insertion rod 24 is attached to the arc-shaped pad plate 5.

[0042] Through the arrangement, the following effects are achieved: first, because the insertion rod 24 is inserted into the slot 22, the first half roller 2031 and the second half roller 2032 can rotate synchronously with the first roller shaft 202; and the position of the first half roller 2031 and the second half roller 2032 can be fixed to prevent axial movement. Second, by inserting the arc-shaped pad plate 5, the insertion rod 24 can be inserted into the slot 22, and no matter whether the arc-shaped pad plate 5 extends into the V-shaped ring groove 3 or not, the insertion rod 24 can be tightly pressed. If it is necessary to disassemble the first half roller 2031 and the second half roller 2032, the arc-shaped pad plate 5 can be pulled out.

[0043] Further, the outer side of the arc-shaped pad plate 5 is fixedly connected with a connecting rod 27, and the end of the connecting rod 27 is fixedly connected with a fixing ring 28; the first roller shaft 202 is provided with an annular groove 29, and the annular groove 29 is located at the edge of the roller body 203; when the sleeve ring 8 is separated from the compression roller 7, the sleeve ring 8 can extend inside the annular groove 29, and the side of the sleeve ring 8 is attached to the outer side of the fixing ring 28. Through the arrangement, the sleeve ring 8 can extend inside the annular groove 29, on the one hand, the sleeve ring 8 can be supported, and the axial movement of the sleeve ring 8 can be prevented, on the other hand, the sleeve ring 8 can limit the arc-shaped pad plate 5 through the fixing ring 28 (at this time, a part of the arc-shaped pad plate 5 is inserted into the V-shaped ring groove 3, which can prevent it from being separated from the V-shaped ring groove 3).

[0044] The working principle of the present application is as follows:

[0045] In specific use, if the copper material processing plant produces both the first and second copper materials simultaneously, and the straightening needs of the two types of copper materials frequently alternate. The traditional straightening equipment may need to be frequently replaced or adjusted to adapt to different profiles, while using the device, the operator only needs to adjust the position of the sleeve ring 8 and the arc-shaped pad 5 according to the type of the current copper material. For example, when producing the first copper material, the arc-shaped pad 5 remains in place, and the pressure roller 7 is clamped through the sleeve ring 8 to straighten the copper material; when switching to the second copper material, the sleeve ring 8 is removed, and the arc-shaped pad 5 is pushed into the V-shaped ring groove 3 to form a support structure suitable for the second copper material, thus easily realizing the conversion of the straightening mode. This efficient switching mode enables the production line to quickly respond to market demand, improving production efficiency and flexibility.

[0046] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An adjustable-angle copper straightening device, comprising a housing (1), characterized in that: The housing (1) is provided with a plurality of bearing rollers (2), the bearing rollers (2) are provided with a V-shaped annular groove (3) in the middle, the bearing rollers (2) are provided with an arc groove (4), the arc groove (4) and the bearing rollers (2) are coaxial, and the arc groove (4) is provided with an arc pad (5) that can be pushed into the V-shaped annular groove (3). A frame (6) is fixedly connected above the housing (1). A lifting connector is provided on the frame (6). A pressure roller (7) is rotatably connected to the lifting connector. A collar (8) is provided on the edge of the pressure roller (7). A first locking block (9) is fixedly connected to the inner ring of the collar (8). A first locking groove (10) is provided on the edge of the pressure roller (7). The first locking block (9) is engaged with the first locking groove (10).

2. The adjustable-angle copper straightening device as described in claim 1, characterized in that: The collar (8) is set as several concentric sub-layers, and the innermost layer is connected to the pressure roller (7) through the first locking block (9) and the first locking groove (10), and the other several sub-layers outside the innermost layer are interlocked with each other through protrusions and recesses; The arc-shaped pad (5) is configured as several coaxial layers.

3. The adjustable-angle copper straightening device as described in claim 1, characterized in that: The bearing roller (2) includes: bearing housing (201), first roller shaft (202), and roller body (203); The bearing housing (201) is fixedly connected to the housing (1); The first roller shaft (202) is rotatably connected to the bearing seat (201), and a first rotation drive component is provided at one end of the first roller shaft (202); The roller body (203) is sleeved on the first roller shaft (202) and is coaxial with the first roller shaft (202), and the arc groove (4) and the V-shaped ring groove (3) are both located on the roller body (203).

4. The adjustable-angle copper straightening device as described in claim 3, characterized in that: The frame (6) is provided with vertically arranged slide rails; The lifting connector includes a slider (11), a bearing rod (12), an upper fastening ring (13), and a lower fastening ring (14). The slider (11) is slidably connected to the slide rail; The support rod (12) is provided with an external thread, and the support rod (12) is connected to the frame (6) through the external thread. The lower end of the support rod (12) is rotatably connected to the slider (11) through a bearing. The upper fastening ring (13) and the lower fastening ring (14) are both connected to the external thread and are respectively attached to the upper and lower sides of the frame (6).

5. The adjustable-angle copper straightening device as described in claim 4, characterized in that: The pressure roller (7) includes a second roller shaft (701) and a roller disc (702); The second roller shaft (701) is rotatably connected to the slider (11) via a bearing, and a second rotation drive is connected to the end of the second roller shaft (701); The roller disc (702) is sleeved on the second roller shaft (701), and the collar (8) is connected to the outer edge of the roller disc (702).

6. The adjustable-angle copper straightening device as described in claim 5, characterized in that: The roller disc (702) includes two opposing half discs. The inner surface of the half disc is provided with a second slot (15). The second roller shaft (701) has a retaining strip (16) which is engaged in the second slot (15).

7. The adjustable-angle copper straightening device as described in claim 6, characterized in that: The second roller shaft (701) is a stepped shaft; both ends of the half disc are provided with threaded grooves (17), and a stud (18) is rotatably connected in the threaded groove (17) by thread, and a stop (19) is fixedly connected to the end of the stud (18), and the stop (19) fits against the step of the second roller shaft (701).

8. The adjustable-angle copper straightening device as described in claim 3, characterized in that: The roller body (203) includes a first half roller (2031) and a second half roller (2032); the arc groove (4) includes two sub-grooves arranged symmetrically, one sub-grooves being disposed in the first half roller (2031) and the other sub-grooves being disposed in the second half roller (2032). The two sub-slots are respectively provided with a third slot (20) on their lower sides. A second card block (21) is fixedly connected to the arc-shaped pad (5), and the second card block (21) is engaged with the third slot (20).

9. The adjustable-angle copper straightening device as described in claim 8, characterized in that: The first roller (202) is provided with a slot (22), and the first half roller (2031) and / or the second half roller (2032) are provided with a insertion hole (23), the insertion hole (23) and the slot (22) are aligned; a insertion rod (24) is slidably connected in the insertion hole (23), the end of the insertion rod (24) away from the slot (22) is provided with a chamfer (25), and a spring (26) is provided in the insertion hole (23), the spring (26) is connected to the insertion rod (24); One end of the insert (24) is inserted into the slot (22), and the other end of the insert (24) is attached to the arc-shaped pad (5).

10. The adjustable-angle copper straightening device as described in claim 3, characterized in that: A connecting rod (27) is fixedly connected to the outer side of the arc-shaped pad (5), and a fixing ring (28) is fixedly connected to the end of the connecting rod (27). The first roller shaft (202) is provided with an annular groove (29), which is located at the edge of the roller body (203). When the collar (8) is disengaged from the pressure roller (7), the collar (8) can extend into the interior of the annular groove (29), and the side of the collar (8) is attached to the outside of the fixed ring (28).

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