Arc punching equipment

Abstract

The invention discloses arc punching equipment which is novel and reasonable in structure, when the arc punching equipment is adopted for conducting arc punching machining on a to-be-machined pipe fitting, a pipe mold can clamp the to-be-machined pipe fitting in the whole circumferential direction, then arc punching is conducted, the risks of defects such as sinking and slight tearing in arc punching can be reduced, and the defective product rate is reduced. Through combined arrangement and cooperative use of the stamping knife angle adjusting assembly, the stamping knife distance adjusting assembly and the stamping knife lifting adjusting assembly, the stamping knife can adjust the pitch angle and can also adjust the distance relative to a to-be-machined pipe fitting on the pipe mold 1, and compared with an existing vertical stamping device which can only adjust the angle of the stamping knife, the stamping knife angle adjusting assembly can adjust the angle of the stamping knife; a stamping knife distance adjusting function is added, so that the arc stamping equipment can machine pipe materials with bent pipes larger than 70 degrees, the utilization rate of the equipment is increased, and the product performance and the productivity of the equipment are both superior to those of existing vertical stamping equipment in the market.

Description

Technical Field

[0001] The invention belongs to the field of electric vehicle manufacturing and relates to a processing device, in particular to an arc punching device. Background Art

[0002] The pipe connections of electric vehicle frames are often connected by welding. In order to ensure the quality of welding, the pipe needs to be punched before welding. The commonly used punching equipment mainly includes punching machines, horizontal punching machines and vertical punching machines. Most punching machines are still mainly used for bending and punching. When using this equipment for punching, the mold remains stationary and the punch moves toward the mold. Since there is no upper mold, the mold cannot limit and fix the pipe to be processed in all directions. The processed pipe will have problems such as dents and slight tears, and defective products are prone to appear. When using vertical punching equipment for arc punching, the mold can limit and fix the pipe in all directions before punching. Although this processing method can reduce the risk of defects such as dents and slight tears in arc punching, the vertical punching equipment can only adjust the punch angle. For curved pipes with bends and corners, when the bending angle is greater than 70 degrees, the pipe will interfere with the equipment. The horizontal punching equipment is the same as the vertical punching equipment. It can only adjust the punching knife angle. When the processing angle of the pipe is greater than 70 degrees, it will interfere with the equipment.

[0003] However, the bending angles of pedal tubes and side tubes of existing electric vehicle frames are mostly greater than 70 degrees. It can be seen that the pipe materials that can be processed by existing horizontal punching equipment and vertical punching equipment are very limited, and the utilization rate and versatility of existing horizontal punching equipment and vertical punching equipment are both low. Therefore, it is necessary to propose a new arc punching equipment to solve the problem that the pipe materials with bending angles greater than 70 degrees are limited by the processing requirements of existing equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of arc punching equipment, which can perform arc punching processing on curved pipes with an angle greater than 70 degrees, increase the utilization rate of the equipment, and solve the problem that curved pipes with an angle greater than 70 degrees are limited by the processing requirements of existing horizontal punching equipment and vertical punching equipment.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides an arc-rushing device, comprising:

[0007] The pipe mold is used to clamp the pipe to be processed in all directions;

[0008] Punching knife;

[0009] A punching knife angle adjustment assembly, comprising an angle adjustment mechanism and a guard plate connected to the angle adjustment mechanism, wherein the guard plate is located on one side of the tube material die, and the angle adjustment mechanism is used to adjust the pitch angle of the guard plate relative to the tube material die;

[0010] A punching knife distance adjustment component is arranged on the guard plate, and the punching knife distance adjustment component is used to adjust the punching knife so that the punching knife is close to or away from the pipe material mold;

[0011] The punching knife lifting and adjusting component is arranged on the punching knife distance adjusting component, the punching knife is connected to the punching knife lifting and adjusting component, and the punching knife lifting and adjusting component is used to drive the punching knife to rise and fall relative to the pipe material mold.

[0012] Optionally, the angle adjustment mechanism includes:

[0013] An angle adjustment plate is arranged on one side of the tube material mold, and the guard plate is connected to the angle adjustment plate through an angle adjustment fixing screw. When the angle adjustment fixing screw is loosened, the guard plate can rotate around the angle adjustment fixing screw relative to the angle adjustment plate, and when the angle adjustment fixing screw is tightened, the guard plate is stationary relative to the angle adjustment plate;

[0014] An angle adjustment drive is used to drive the guard plate to rotate relative to the angle adjustment plate around the angle adjustment fixing screw.

[0015] Optionally, the angle adjustment plate is further provided with an arc groove, and the center of the arc groove is located at the connection position between the angle adjustment plate and the guard plate; the guard plate is also provided with a protrusion that slidably cooperates with the arc groove.

[0016] Optionally, the angle adjustment drive includes:

[0017] A lead screw support is rotatably arranged on the angle adjustment plate through a pin shaft;

[0018] A rotationally adjustable lead screw, one end of which passes through the lead screw support and is rotationally connected to the lead screw support, and the axial direction of the rotationally adjustable lead screw is perpendicular to the pin shaft;

[0019] A lead screw slider is arranged on the guard plate, and the other end of the rotation adjustment lead screw passes through the lead screw slider and is threadedly connected with the lead screw slider.

[0020] Optionally, the punch blade distance adjustment component includes:

[0021] A fixing bracket is arranged on the guard plate;

[0022] A distance adjustment screw, one end of which is rotatably connected to the fixed bracket;

[0023] A mounting bracket, threadedly connected to the other end of the distance adjustment screw, and the punching knife lifting and lowering adjustment assembly is arranged on the mounting bracket;

[0024] The distance adjustment drive is connected to the distance adjustment screw and is used to drive the distance adjustment screw to rotate.

[0025] Optionally, the distance adjustment drive is a hand wheel or a rotary motor connected to the distance adjustment screw.

[0026] Optionally, the mounting bracket is slidably matched with the guard plate via a concave-convex structure.

[0027] Optionally, the punching knife lifting and adjusting assembly includes:

[0028] A punching knife clamp is slidably connected to the mounting bracket, and the punching knife clamp is used to clamp the punching knife;

[0029] The punching knife stroke cylinder is arranged on the top of the mounting bracket, and the telescopic rod of the punching knife stroke cylinder is connected with the punching knife clamping die to drive the punching knife to rise and fall relative to the pipe material die.

[0030] Optionally, the tube mold includes:

[0031] Mounting plate;

[0032] A first side clamping mold is slidably disposed on the mounting plate;

[0033] A second side clamping mold, movably disposed on the mounting plate and arranged opposite to the first side clamping mold;

[0034] The first adjustment mechanism comprises an adjustment seat and a clamping die adjustment screw, wherein the adjustment seat is arranged on the mounting plate and is located on a side of the first side clamping die away from the second side clamping die; one end of the clamping die adjustment screw passes through the adjustment seat and is threadedly connected to the adjustment seat, and the other end of the clamping die adjustment screw is rotatably connected to the adjustment seat;

[0035] The second adjusting mechanism comprises a clamping die stroke cylinder, which is arranged on the mounting plate and located on a side of the second side clamping die away from the first side clamping die, and the clamping die stroke cylinder is connected to the second side clamping die.

[0036] Optionally, a workbench is further included, and the tube material mold and the punch angle adjustment assembly are both arranged on the workbench.

[0037] Optionally, a control box is also included, and the control box is communicatively connected to the punch knife lifting and adjusting assembly.

[0038] Compared with the prior art, the present invention has achieved the following technical effects:

[0039] The arc punching equipment disclosed in the present invention has a novel and reasonable structure. When the arc punching equipment is used to punch the pipe to be processed, the pipe material mold can clamp the pipe to be processed in all directions and then punch the arc, which can reduce the risk of defects such as dents and slight tears in the arc punching, and reduce the defective product rate. Through the combination setting of the punching knife angle adjustment component, the punching knife distance adjustment component and the punching knife lifting adjustment component, and their coordinated use, the punching knife can be adjusted in pitch angle and distance relative to the pipe to be processed on the pipe material mold 1. Compared with the existing vertical punching setting that can only adjust the punching knife angle, the present invention adds a punching knife distance adjustment function, so that the arc punching equipment can process pipe materials with bends greater than 70°, which increases the utilization rate of the equipment and makes the product quality and productivity of the equipment better than the existing vertical punching equipment on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A front perspective view of an arc punching device disclosed in an embodiment of the present invention;

[0042] Figure 2 A rear perspective view of the arc punching device disclosed in an embodiment of the present invention;

[0043] Figure 3 A side view of the arc punching device disclosed in an embodiment of the present invention;

[0044] Figure 4 It is a rear view of the arc rushing device disclosed in the embodiment of the present invention.

[0045] Wherein, the accompanying drawings are marked as follows:

[0046] 100. Arc-rushing equipment;

[0047] 1. Tube mold; 11. Mounting plate; 12. First side clamping mold; 13. Second side clamping mold; 14. Adjustment seat; 15. Clamping mold adjustment screw; 16. Clamping mold stroke cylinder;

[0048] 2. Punching knife;

[0049] 3. Punch angle adjustment assembly; 31. Angle adjustment mechanism; 32. Guard plate; 33. Angle adjustment plate; 34. Angle adjustment fixing screw; 35. Arc groove; 36. Bump; 37. Screw support; 38. Rotation adjustment screw; 39. Screw slider; 310. Pin shaft;

[0050] 4. Punch knife distance adjustment assembly; 41. Fixed bracket; 42. Distance adjustment screw; 43. Mounting bracket; 44. Hand wheel; 45. Strip slide; 46. Strip convex block;

[0051] 5. Punch knife lifting and adjusting assembly; 51. Punch knife clamping die; 52. Punch knife stroke cylinder.

[0052] 6. Workbench;

[0053] 7. Control box. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] One of the purposes of the present invention is to provide a new type of arc punching equipment, which can perform arc punching processing on curved pipes with an angle greater than 70 degrees, increase the utilization rate of the equipment, and solve the problem that curved pipes with an angle greater than 70 degrees are limited by the processing requirements of existing horizontal punching equipment and vertical punching equipment.

[0056] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] Embodiment 1

[0058] like Figure 1 to Figure 4 As shown, this embodiment provides an arc punching device 100, which mainly includes a tube mold 1, a punching knife 2, a punching knife angle adjustment component 3, a punching knife distance adjustment component 4 and a punching knife lifting adjustment component 5. The tube mold 1 is used to clamp the tube to be processed in all directions; the punching knife angle adjustment component 3 includes an angle adjustment mechanism 31 and a guard plate 32 connected to the angle adjustment mechanism 31, the guard plate 32 is located on one side of the tube mold 1, and the angle adjustment mechanism 31 is used to adjust the pitch angle of the guard plate 32 relative to the tube mold 1; the punching knife distance adjustment component 4 is arranged on the guard plate 32, and the punching knife distance adjustment component 4 is used to adjust the punching knife 2 so that the punching knife 2 is close to or away from the tube mold 1; the punching knife lifting adjustment component 5 is arranged on the punching knife distance adjustment component 4, the punching knife 2 is connected to the punching knife lifting adjustment component 5, and the punching knife lifting adjustment component 5 is used to drive the punching knife 2 to rise and fall relative to the tube mold 1.

[0059] In this embodiment, the angle adjustment mechanism 31 includes an angle adjustment plate 33 and an angle adjustment drive. The angle adjustment plate 33 is arranged on one side of the tube material mold 1. The guard plate 32 is connected to the angle adjustment plate 33 through an angle adjustment fixing screw 34. When the angle adjustment fixing screw 34 is loosened, the guard plate 32 can rotate around the angle adjustment fixing screw 34 relative to the angle adjustment plate 33. When the angle adjustment fixing screw 34 is tightened, the guard plate 32 is stationary relative to the angle adjustment plate 33. The angle adjustment drive is mainly used to drive the guard plate 32 to rotate around the angle adjustment fixing screw 34 relative to the angle adjustment plate 33.

[0060] In this embodiment, the angle adjustment plate 33 is further provided with an arc groove 35, and the center of the arc groove 35 is located at the connection position between the angle adjustment plate 33 and the guard plate 32, that is, the center of the arc groove 35 is located on the axis of the angle adjustment fixing screw 34, and the guard plate 32 is further provided with a convex block 36 that slidably cooperates with the arc groove 35. When the angle adjustment drive drives the guard plate 32 to rotate relative to the angle adjustment plate 33 around the angle adjustment fixing screw 34, the convex block 36 slides along the arc groove 35 in the arc groove 35. When the angle of the angle adjustment plate 33 is adjusted to the right position, the angle adjustment fixing screw 34 is tightened to achieve the relative position fixation between the guard plate 32 and the angle adjustment plate 33. The convex block 36 is preferably a cylindrical protrusion, such as a pin, a bolt, etc.

[0061] Furthermore, in this embodiment, if Figure 1 and Figure 3 As mentioned above, the angle adjustment drive adopts a "screw slider mechanism", which specifically includes a screw support 37, a rotation adjustment screw 38 and a screw slider 39. The screw support 37 is rotatably arranged on the angle adjustment plate 33 through a pin 310. One end of the rotation adjustment screw 38 passes through the screw support 37 and is rotationally connected with the screw support 37. The axial direction of the rotation adjustment screw 38 is perpendicular to the pin 310. The screw slider 39 is arranged on the guard plate 32. The other end of the rotation adjustment screw 38 passes through the screw slider 39 and is threadedly connected with the screw slider 39. Loosen the angle adjustment fixing screw 34, and then rotate the above-mentioned rotation adjustment screw 38, so that the screw slider 39 can be driven to move relative to the rotation adjustment screw 38 along the axial direction of the rotation adjustment screw 38. In this process, since the guard plate 32 rotates, in order to avoid the interference between the operation of the "screw slider mechanism" and the rotation movement of the guard plate 32, the screw support 37 will rotate around the pin 310 to adapt to the position change of the screw slider 39. The above-mentioned screw support 37 is preferably a cylindrical structure, which is mainly used to support the rotating adjustment screw 38. The screw support 37 can generally adopt a bearing structure. The rotating adjustment screw 38 is inserted and connected to the inner ring of the bearing structure. During the rotation of the rotating adjustment screw 38, its two ends will not fall out from the bearing structure and the screw slider 39 to ensure the normal operation of the mechanism.

[0062] In this embodiment, the punch blade distance adjustment assembly 4 includes a fixed bracket 41, a distance adjustment screw 42, a mounting bracket 43 and a distance adjustment drive. The fixed bracket 41 is arranged on the guard plate 32, one end of the distance adjustment screw 42 is rotatably connected to the fixed bracket 41, the mounting bracket 43 is threadedly connected to the other end of the distance adjustment screw 42, and the punch blade lifting adjustment assembly 5 is arranged on the mounting bracket 43; the distance adjustment drive is connected to the distance adjustment screw 42 and is used to drive the distance adjustment screw 42 to rotate. The above-mentioned distance adjustment drive can be a hand wheel 44 or a rotary motor connected to the distance adjustment screw 42. As a preferred solution, the distance adjustment drive of this embodiment uses a hand wheel 44.

[0063] In this embodiment, in order to ensure the movement stability of the mounting bracket 43, it is preferred that the mounting bracket 43 slides with the guard plate 32 through a concave-convex structure, and the concave-convex structure can provide guidance for the mounting bracket 43 when it moves relative to the guard plate 32. The concave-convex structure includes a strip-shaped slide groove 45 and a strip-shaped protrusion 46 that slides with it, such as Figure 4 As shown, the top of the guard plate 32 is bent inward to form an L-shaped structure, and the corner position of the L-shaped structure forms a strip slide groove 4; correspondingly, the top of the mounting bracket 43 is concave to form a step, and the step is the strip protrusion 45. The mounting bracket 43 is slidably matched with the above-mentioned strip slide groove 4 through the strip protrusion 45.

[0064] In this embodiment, the punching knife lifting and adjusting assembly 5 includes a punching knife clamp 51 and a punching knife stroke cylinder 52. The punching knife clamp 51 is slidably connected to the mounting bracket 43. The punching knife clamp 51 is used to clamp the punching knife 2. The punching knife stroke cylinder 52 is arranged on the top of the mounting bracket 43. The telescopic rod of the punching knife stroke cylinder 52 is connected to the punching knife clamp 51 to drive the punching knife clamp 51 and the punching knife 2 thereon to rise and fall relative to the pipe material mold 1.

[0065] In this embodiment, the pipe material mold 1 includes a mounting plate 11, a first side clamp 12, a second side clamp 13, a first adjustment mechanism and a second adjustment mechanism. The first side clamp 12 is slidably arranged on the mounting plate 11, and the second side clamp 13 is movably arranged on the mounting plate 11 and arranged relative to the first side clamp 12; the first adjustment mechanism includes an adjustment seat 14 and a clamp adjustment screw 15, the adjustment seat 14 is arranged on the mounting plate 11, and is located on the side of the first side clamp 12 away from the second side clamp 13; one end of the clamp adjustment screw 15 penetrates the adjustment seat 14 and the clamp adjustment screw 15. The joint seat 14 is threadedly connected with the adjustment seat 14. The other end of the clamping die adjusting screw 15 is rotatably connected with the adjustment seat 14. The clamping die adjusting screw 15 is rotated, and the clamping die adjusting screw 15 moves toward the second side clamping die 13 relative to the adjustment seat 14. Since the clamping die adjusting screw 15 is rotatably connected with the first side clamping die 12, the first side clamping die 12 does not interfere with the rotation of the clamping die adjusting screw 15. At the same time, the movement of the clamping die adjusting screw 15 will also drive the first side clamping die 12 to move synchronously, so that the first side clamping die 12 is close to or away from the second side clamping die 13. The above-mentioned second adjustment mechanism includes a clamping die stroke cylinder 16, which is arranged on the mounting plate 11 and is located on the side of the second side clamping die 13 away from the first side clamping die 12. The telescopic rod of the clamping die stroke cylinder 16 is connected to the second side clamping die 13, and is used to drive the second side clamping die 13 to move, so that the second side clamping die 13 is close to or away from the first side clamping die 12. In the above scheme, a first adjustment mechanism is connected to the first side clamp 12, and a second adjustment mechanism is connected to the second side clamp 13, wherein, generally, the first side clamp 12 remains stationary, and the second side clamp 13 is telescopically driven by the second adjustment mechanism to achieve the clamping and mutual separation of the second side clamp 13 and the first side clamp 12. When processing pipes of different diameters and different curvatures, the position of the first side clamp 12 can be adjusted by the first adjustment mechanism, so that when the second side clamp 13 and the first side clamp 12 are clamped, the arc axis of the pipe can always coincide with the punch axis, thereby ensuring the accuracy of the arc punching process. The above-mentioned first adjustment mechanism is mainly used to fine-tune the structure of the first side clamp 12. The first adjustment mechanism adopts a "screw slider mechanism" as a whole, which has good self-locking function and high adjustment accuracy, and will not affect the normal clamping function and clamping function of the pipe mold 1.

[0066] In this embodiment, a workbench 6 is also included, on which the mounting plate 11 of the tube material mold 1 and the angle adjustment plate 33 of the punch angle adjustment assembly 3 are both arranged. Figure 1As shown, the tube material mold 1 is located as a whole in front of the punching knife angle adjustment assembly 3, and the punching knife angle adjustment assembly 3 has two groups of guard plates 32 and angle adjustment plates 33, respectively, wherein the two groups of angle adjustment plates 33 are symmetrically arranged at intervals, and the tube material mold 1 is arranged between the two groups of angle adjustment plates 33, and the two groups of guard plates 32 and the two groups of angle adjustment plates 33 are connected one by one, and the connection method is exactly the same, the only difference is that only one group of guard plates 32 is connected to the angle adjustment drive.

[0067] In this embodiment, a control box 7 is further included, and the control box 7 is communicatively connected with the punching knife stroke cylinder 52 and the mold clamping stroke cylinder 16 of the punching knife lifting and adjusting assembly 5 .

[0068] The arc punching equipment 100 disclosed in this scheme is a multifunctional vertical punching equipment. When the arc punching processing is performed on the pipe to be processed, the first side clamping mold 12 and the second side clamping mold 13 are closed to evenly clamp and fix the pipe to be processed in the circumferential direction, and then the arc is punched, which can reduce the depression of the arc and reduce the defective product rate. Through the combination setting of the punching knife angle adjustment component, the punching knife distance adjustment component and the punching knife lifting adjustment component, and the coordinated use, the punching knife can be adjusted in angle and can also be adjusted forward and backward relative to the pipe to be processed on the pipe material mold 1. Compared with the existing vertical punching setting that can only adjust the punching knife angle, this scheme adds a forward and backward adjustment function, so that the arc punching equipment can process pipes with bends greater than 70°, which increases the utilization rate of the equipment and makes the product quality and productivity of the equipment better than the existing vertical punching equipment on the market.

[0069] In addition, in the present solution, the drive for realizing the front and rear (distance) adjustment of the punch knife adopts a screw slider mechanism composed of a fixed bracket 41, a distance adjustment screw 42 and a mounting bracket 43. It is not only convenient for adjustment and stable in operation, but also the screw slider mechanism has good self-locking properties, which can effectively ensure the relative stability of the position of the mounting bracket 43 before and after adjustment.

[0070] In addition, in this solution, an angle adjustment fixing screw 34 is used to achieve locking and unlocking between the guard plate 32 and the angle adjustment plate 33. When locked, the relative position between the guard plate 32 and the angle adjustment plate 33 can be effectively guaranteed to be fixed.

[0071] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0072] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An arc-rushing device, characterized in that: include: The pipe mold is used to clamp the pipe to be processed in all directions; Punching knife; A punching knife angle adjustment assembly, comprising an angle adjustment mechanism and a guard plate connected to the angle adjustment mechanism, wherein the guard plate is located on one side of the tube material die, and the angle adjustment mechanism is used to adjust the pitch angle of the guard plate relative to the tube material die; A punching knife distance adjustment component is arranged on the guard plate, and the punching knife distance adjustment component is used to adjust the punching knife so that the punching knife is close to or away from the pipe material mold; The punching knife lifting and adjusting component is arranged on the punching knife distance adjusting component, the punching knife is connected to the punching knife lifting and adjusting component, and the punching knife lifting and adjusting component is used to drive the punching knife to rise and fall relative to the pipe material mold.

2. The arc punching device according to claim 1, characterized in that: The angle adjustment mechanism comprises: An angle adjustment plate is arranged on one side of the tube material mold, and the guard plate is connected to the angle adjustment plate through an angle adjustment fixing screw. When the angle adjustment fixing screw is loosened, the guard plate can rotate around the angle adjustment fixing screw relative to the angle adjustment plate, and when the angle adjustment fixing screw is tightened, the guard plate is stationary relative to the angle adjustment plate; An angle adjustment drive is used to drive the guard plate to rotate relative to the angle adjustment plate around the angle adjustment fixing screw.

3. The arc punching device according to claim 2, characterized in that: The angle adjustment plate is also provided with an arc groove, and the center of the arc groove is located at the connection position between the angle adjustment plate and the guard plate; the guard plate is also provided with a protrusion that slidably cooperates with the arc groove.

4. The arc punching device according to claim 2, characterized in that: The angle adjustment drive comprises: A lead screw support is rotatably arranged on the angle adjustment plate through a pin shaft; A rotationally adjustable lead screw, one end of which passes through the lead screw support and is rotationally connected to the lead screw support, and the axial direction of the rotationally adjustable lead screw is perpendicular to the pin shaft; A lead screw slider is arranged on the guard plate, and the other end of the rotation adjustment lead screw passes through the lead screw slider and is threadedly connected with the lead screw slider.

5. The arc punching device according to any one of claims 2 to 4, characterized in that: The punch blade distance adjustment component comprises: A fixing bracket is arranged on the guard plate; A distance adjustment screw, one end of which is rotatably connected to the fixed bracket; A mounting bracket, threadedly connected to the other end of the distance adjustment screw, and the punching knife lifting and lowering adjustment assembly is arranged on the mounting bracket; The distance adjustment drive is connected to the distance adjustment screw and is used to drive the distance adjustment screw to rotate.

6. The arc punching device according to claim 5, characterized in that: The distance adjustment drive is a hand wheel or a rotary motor connected to the distance adjustment lead screw.

7. The arc punching device according to claim 5, characterized in that: The mounting bracket is slidably matched with the guard plate via a concave-convex structure.

8. The arc punching device according to claim 5, characterized in that: The punching knife lifting and adjusting assembly comprises: A punching knife clamp is slidably connected to the mounting bracket, and the punching knife clamp is used to clamp the punching knife; The punching knife stroke cylinder is arranged on the top of the mounting bracket, and the telescopic rod of the punching knife stroke cylinder is connected with the punching knife clamping die to drive the punching knife to rise and fall relative to the pipe material die.

9. The arc punching device according to claim 1, characterized in that: The tube mold comprises: Mounting plate; A first side clamping mold is slidably disposed on the mounting plate; A second side clamping mold, movably disposed on the mounting plate and arranged opposite to the first side clamping mold; The first adjustment mechanism comprises an adjustment seat and a clamping die adjustment screw, wherein the adjustment seat is arranged on the mounting plate and is located on a side of the first side clamping die away from the second side clamping die; one end of the clamping die adjustment screw passes through the adjustment seat and is threadedly connected to the adjustment seat, and the other end of the clamping die adjustment screw is rotatably connected to the adjustment seat; The second adjusting mechanism comprises a clamping die stroke cylinder, which is arranged on the mounting plate and located on a side of the second side clamping die away from the first side clamping die, and the clamping die stroke cylinder is connected to the second side clamping die.

10. The arc punching device according to claim 1, characterized in that: It also includes a workbench, on which the tube material mold and the punch angle adjustment assembly are both arranged.

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