Curvature-adjustable roll bending equipment

Abstract

The invention discloses curvature-adjustable roll bending equipment, and belongs to the technical field of roll bending machining, the curvature-adjustable roll bending equipment comprises a rack, a bending device and a cutting device are mounted on the rack, the bending device comprises a plurality of groups of compression roller assemblies arranged in the advancing direction of a pipe fitting, and each compression roller assembly comprises an upper compression roller, a lower compression roller, a left mounting seat and a right mounting seat; the two ends of the upper pressing roller and the two ends of the lower pressing roller are adjustably installed on the installation bases, a butt joint device and a power device are arranged at one end of the bending device, the butt joint device comprises a plurality of adjustable connecting assemblies, and the connecting assemblies correspond to the pressing roller assemblies one to one in position. One end of the upper pressing roller or the lower pressing roller is connected with a power device through a connecting assembly. The positions of the compression rollers are adjustable, and power connection is adjustable, so that the curvature is flexibly adjusted.

Description

Technical Field

[0001] This application relates to the field of roll bending technology, and in particular to a roll bending device with adjustable curvature. Background Technology

[0002] Roll bending equipment is a type of mechanical device widely used in pipe processing. It is mainly used to bend straight pipes into arc-shaped pipes with specific curvatures, and is widely used in automobile manufacturing, industrial production and other fields. Traditional roll bending equipment usually bends pipes by using fixed molds or rollers. Its core principle is to use mechanical force to cause plastic deformation of the pipe under the action of rollers or molds, thereby forming the desired curved shape.

[0003] Relevant prior art, such as Chinese patent application "A processing device integrating cutting, handling and bending," application number: CN201310530880.9, discloses a device comprising a cutting device, a pipe receiving and feeding device, and a pipe bending machine. The pipe receiving and feeding device has a discharge disc with several radial discharge grooves. The discharge disc rotates stepwise following a rotating shaft. During pauses, one discharge groove is horizontal or inclined upwards, and the next discharge groove along the rotation direction of the discharge disc is vertical. The advantages of this invention are: high degree of automation, eliminating the need for manual intervention in the process from feeding to bending; improved placement of devices and pipe conveying direction reduce space requirements; and a simple and easy-to-operate structure.

[0004] While existing roller bending equipment can meet basic bending requirements, it still has significant limitations in practical applications. The equipment's curvature adjustment capability is insufficient, making it impossible to quickly and flexibly process pipe fittings with different curvatures on the same machine. Processing pipe fittings with different curvatures typically requires custom-made molds or replacement of equipment parts, which not only increases processing costs but also extends the production cycle. Furthermore, frequent mold changes or equipment adjustments lead to decreased production efficiency, making it difficult to meet the demands of modern manufacturing for high flexibility and low cost. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a roller bending device with adjustable curvature, which realizes flexible adjustment of curvature by adjusting the position of the pressure roller and the power connection.

[0006] The technical solution adopted in this application is as follows: a roller bending device with adjustable curvature, including a frame, on which a bending device and a cutting device are respectively installed. The bending device includes multiple sets of pressure roller assemblies arranged along the forward direction of the pipe. The pressure roller assembly includes an upper pressure roller, a lower pressure roller, and two mounting seats on the left and right. The two ends of the upper pressure roller and the two ends of the lower pressure roller are adjustablely mounted on the mounting seats. One end of the bending device is provided with a docking device and a power device. The docking device includes multiple adjustable connecting components. The positions of the connecting components and the pressure roller assemblies correspond one-to-one. One end of the upper pressure roller or the lower pressure roller is connected to the power device through the connecting components.

[0007] Compared with the prior art, the advantages of this application are as follows: First, the upper and lower pressure rollers of this application are adjustable at both ends of the mounting base, allowing direct change in the relative position of the pressure rollers (such as spacing or height), thereby adjusting the bending curvature of the pipe fitting and avoiding the cumbersome operation of changing molds or components required by traditional equipment. Multiple sets of pressure roller assemblies arranged along the pipe fitting's forward direction form a gradual bending path. The independent adjustment of each set of pressure rollers can superimpose more complex curvature changes, resulting in more precise adjustment and reduced local stress concentration in the pipe fitting compared to the traditional single-point bending method.

[0008] Secondly, the connecting components and pressure roller components are positioned one-to-one and the connecting components are adjustable, ensuring that the power unit can dynamically match the pressure rollers at different positions (whether it is the upper or lower pressure roller). When the positions of the upper and lower pressure rollers change due to curvature adjustment, the stability of power transmission can still be maintained by adjusting the connecting components, avoiding the failure of traditional fixed transmission structures caused by positional offset.

[0009] Finally, the bending and cutting devices are mounted together on the frame, allowing the pipes to be cut directly after bending without needing to be transferred to a separate cutting station, thus shortening the production cycle. The integrated design of the left and right mounting seats for the pressure roller assembly reduces the space occupied by traditional separate supports, allowing the equipment to maintain a compact layout while still providing adjustment capabilities.

[0010] In some embodiments of this application, a groove is formed on the mounting base along the height direction, and an upper slider and a lower slider are installed in the groove. The upper slider and the lower slider can move up and down along the groove to adjust the height. The groove and slider structure limits the displacement of the upper and lower pressure rollers to a straight line, ensuring a unique and stable movement path and guaranteeing the directional accuracy of curvature adjustment.

[0011] A scale is provided on one side of the slide, and pointers are provided on the surfaces of the upper and lower sliders, pointing to the scale. This application allows operators to intuitively determine the height of the upper and lower sliders through the scale and pointers, facilitating adjustment. The scale and pointers form a visual ruler, allowing operators to directly read the current height value without additional measuring tools, reducing adjustment errors.

[0012] In some embodiments of this application, the mounting base is provided with an adjusting screw, which is connected to an upper slider or a lower slider; one end of the lower pressure roller passes through the mounting base and is connected to the connecting assembly.

[0013] The position of the upper or lower pressure roller is fixed by adjusting the screw. The slider is directly driven by the adjusting screw, achieving high precision in height adjustment.

[0014] In some embodiments of this application, the connecting assembly includes a pressing cylinder, a connecting seat, a connecting block, and a connecting shaft. The connecting seat has a slot along the height direction. The connecting block is movably installed in the slot. The pressing cylinder is installed on the connecting seat. The output shaft of the pressing cylinder is connected to the connecting block. The connecting shaft passes through the connecting block. The operation of the pressing cylinder drives the connecting shaft to move up and down along the slot.

[0015] The combination of the pressure cylinder, groove, and connecting block limits the displacement of the connecting shaft to a straight line, ensuring a unique and stable movement path. By keeping the height of the connecting shaft synchronized with the height of the pressure roller, the power docking position is always aligned with the center of the pressure roller.

[0016] In some embodiments of this application, a second reference strip is provided on the connecting block, the bottom surface of the second reference strip is a second reference surface, and the second reference surface and the central axis of the connecting shaft are located on the same horizontal plane; a first reference strip is provided on the outer periphery of the lower slider, the top surface of the first reference strip is a first reference surface, and the first reference surface and the central axis of the lower pressure roller are located on the same horizontal plane; the connecting block moves downward until the bottom surface of the second reference strip contacts the top surface of the first reference strip, and the connecting shaft and the lower pressure roller are aligned.

[0017] In the structural design of this application, the pressure roller assembly and the connecting assembly are already positioned to achieve a one-to-one correspondence. For pipe fittings with different curvatures, only the vertical height of the upper and lower pressure rollers needs to be adjusted. Mechanical positioning is achieved through the surface-to-surface contact of the first and second reference strips, ensuring that the center of the connecting shaft and the lower pressure roller are on the same horizontal line, thus eliminating visual alignment errors.

[0018] In some embodiments of this application, a first connecting ring is sleeved on one end of the lower pressure roller passing through the mounting base, a second connecting ring is sleeved on the connecting shaft, a push cylinder is mounted on the connecting block, and the output shaft of the push cylinder is connected to the second connecting ring; after the connecting shaft is aligned with the lower pressure roller, the push cylinder works to drive the second connecting ring to move toward the first connecting ring, and the end face of the second connecting ring is embedded in the first connecting ring.

[0019] The mating of the first and second connecting rings allows for locking of their relative positions. The end faces of the first and second connecting rings engage to form a rigid coupling, transmitting torque while locking the axial position to prevent disengagement during operation.

[0020] In some embodiments of this application, one end of the connecting shaft is connected to the lower pressure roller, and the other end of the connecting shaft is equipped with a docking port. The docking port is connected to a power device through a retractable universal joint. The power device outputs rotational power and transmits it to the connecting shaft through the universal joint. The rotation of the connecting shaft is synchronously transmitted to the lower pressure roller.

[0021] This application achieves rapid adjustment of the upper and lower pressure rollers, as well as rapid alignment and power transmission between the connecting shaft and the lower pressure roller. Finally, it achieves rapid docking with the power unit via a docking port and a retractable universal joint to transmit power.

[0022] The retractable universal joint used in this application is a commercially available product that can be directly purchased, and its structure will not be elaborated here. The retractable universal joint allows the power input end to maintain continuous transmission when the height of the pressure roller changes, compensating for axial displacement and angular deviation, without the need to disassemble and reassemble the transmission components.

[0023] In some embodiments of this application, the cutting device includes a base, an inclined seat, and a cutting seat. The base is fixedly mounted on a frame. One end of the inclined seat is rotatably connected to the base, and the other end of the inclined seat is fixedly connected by a fastener. Slide rails are provided on both sides of the inclined seat. The slide rails are downwardly convex curved strips. The cutting seat is mounted on the slide rails and is connected to a drive cylinder. The drive cylinder drives the cutting seat to move along the slide rails.

[0024] The connection structure between the tilting seat and the base allows for adjustable tilt angle. The tilting seat can rotate around the base and lock, ensuring that the movement trajectory of the cutting seat is consistent with the instantaneous curvature tangent of the pipe, guaranteeing the perpendicularity of the cut. The curved slide rail provides a guide path for the cutting seat that matches the curvature of the pipe, ensuring a constant relative position between the tool and the pipe during the cutting process.

[0025] In this application, in order to improve efficiency and enhance the accuracy of pipe cutting, the cutting device is designed to be a follower, with the cutting seat moving synchronously with the movement of the pipe and performing cutting.

[0026] In some embodiments of this application, the cutting seat includes a top plate and side plates disposed below both sides of the top plate. A rack is installed below one of the side plates. The bottom surface of the rack is a toothed surface and a downwardly convex arc-shaped surface. The drive cylinder is a rotary motor. The output shaft of the drive cylinder is connected to a gear. The gear is located below the rack and meshes with the toothed surface of the rack.

[0027] Traditional methods of driving the cutting seat use cylinders, which suffer from unstable air intake during use. This application employs a combination of a motor and an arc-shaped gear surface, enabling stable movement of the cutting seat along the curved strip. The meshing transmission of the motor, gears, and arc-shaped rack eliminates air pressure fluctuations, resulting in stable cutting seat movement speed and improved consistency of cut quality.

[0028] In some embodiments of this application, the side plate is provided with a plurality of vertical rollers, which are regularly arranged below the slide rail, and the surfaces of the vertical rollers are in contact with the bottom surface of the slide rail; the side plate is provided with a plurality of horizontal rollers, which are regularly arranged outside the slide rail, and the surfaces of the horizontal rollers are in contact with the sides of the slide rail; two sliding blocks are installed below the top plate, with the bottom surfaces of the sliding blocks in contact with the top surface of the slide rail, and the bottom surfaces of the sliding blocks are adapted to the top surface of the slide rail.

[0029] The vertical roller, horizontal roller, and sliding block form a three-sided constraint, allowing the cutting seat to retain only the degree of freedom along the slide rail direction, eliminating wobbling and improving the straightness of movement. At this point, the cutting seat is fully and stably installed on the tilting seat and moves exactly according to the slide rail design, matching the movement trajectory of the pipe fitting.

[0030] In this application, the cutting seat is equipped with a cutting block and a cutting tool. The cutting tool is connected to a power cylinder. The pipe passes through the cutting block, and the power cylinder drives the cutting tool to cut downwards, severing the pipe that has passed through the cutting block. The power cylinder directly punches downwards to complete the cutting, resulting in a short action path, a neat cut surface, and reduced secondary burr treatment.

[0031] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0032] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0033] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ; Figure 3 This is a top view of this application; Figure 4 for Figure 3 Sectional view of section AA; Figure 5This is a schematic diagram of the pressure roller assembly in this application; Figure 6 This is a schematic diagram of the cutting device in this application; Figure 7 A schematic diagram of a cutting device for disassembling a side plate.

[0034] The specific reference numerals in the attached drawings are explained as follows: 1. Frame; 2. Bending device; 3. Cutting device; 4. Pressure roller assembly; 5. Upper pressure roller; 6. Lower pressure roller; 7. Mounting base; 8. Docking device; 9. Power unit; 10. Connecting assembly; 11. Slide groove; 12. Upper slider; 13. Lower slider; 14. Adjusting screw; 15. Lower pressure cylinder; 16. Connecting seat; 17. Connecting block; 18. Connecting shaft; 19. Groove; 20. Second reference bar; 22. First reference bar; 23. First reference surface; 24. First connecting ring; 25. Second connecting ring; 26. Push cylinder; 27. Docking port; 28. Universal joint; 29. Base; 30. Inclined seat; 32. Slide rail; 33. Cutting seat; 34. Drive cylinder; 35. Top plate; 36. Side plate; 37. Rack; 39. Vertical roller; 40. Horizontal roller; 41. Sliding block; 42. Pipe fitting. Detailed Implementation

[0035] The present application will now be described in detail with reference to the accompanying drawings.

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0037] A roll bending device with adjustable curvature, such as Figures 1 to 3 As shown: The device includes a frame 1, on which a bending device 2 and a cutting device 3 are respectively mounted. The bending device 2 includes multiple sets of pressure roller assemblies 4 arranged along the forward direction of the pipe fitting 42. Each pressure roller assembly 4 includes an upper pressure roller 5, a lower pressure roller 6, and two mounting seats 7 on the left and right. The two ends of the upper pressure roller 5 and the two ends of the lower pressure roller 6 are adjustablely mounted on the mounting seats 7. The adjustable mounting seats 7 on the upper pressure roller 5 and the lower pressure roller 6 allow for direct changes in the relative positions of the pressure rollers (such as spacing or height), thereby adjusting the curvature of the pipe fitting 42 and avoiding the cumbersome operation of changing molds or components required by traditional equipment. The multiple sets of pressure roller assemblies 4 arranged along the forward direction of the pipe fitting 42 form a gradual bending path. The independent adjustment of each set of pressure rollers can superimpose more complex curvature changes. Compared with the traditional single-point bending method, the adjustment is more precise and reduces local stress concentration in the pipe fitting 42.

[0038] One end of the bending device 2 is equipped with a docking device 8 and a power device 9. The docking device 8 includes multiple adjustable connecting components 10, each corresponding to a pressure roller assembly 4. One end of the upper pressure roller 5 or the lower pressure roller 6 is connected to the power device 9 via a connecting component 10. The connecting components 10 correspond to the pressure roller assembly 4 and are adjustable, ensuring that the power device 9 can dynamically match the pressure rollers at different positions (regardless of whether it's the upper pressure roller 5 or the lower pressure roller 6). When the positions of the upper pressure roller 5 and the lower pressure roller 6 change due to curvature adjustment, the stability of power transmission can still be maintained by adjusting the connecting components 10, avoiding failure caused by positional misalignment in traditional fixed transmission structures.

[0039] The bending device 2 and the cutting device 3 are installed together on the frame 1. After the pipe 42 is bent, it can be cut directly without having to be transferred to a separate cutting station, thus shortening the production cycle. The left and right mounting seats 7 of the pressure roller assembly 4 are integrated, which reduces the space occupied by the traditional split support and allows the equipment to maintain a compact layout while having adjustment functions.

[0040] Example 2, as Figures 1 to 5 As shown, a sliding groove 11 is provided on the mounting base 7 along the height direction. An upper slider 12 and a lower slider 13 are installed in the sliding groove 11. The upper slider 12 and the lower slider 13 can move up and down along the sliding groove 11 to adjust the height. The sliding groove 11 and slider structure limit the displacement of the upper pressure roller 5 and the lower pressure roller 6 to a straight line, ensuring a unique and stable movement path and guaranteeing the directional accuracy of curvature adjustment.

[0041] A scale is provided on one side of the slide groove 11, and pointers are provided on the surfaces of the upper slider 12 and the lower slider 13, with the pointers pointing to the scale. This application allows operators to intuitively obtain the height of the upper slider 12 and the lower slider 13 through the scale and pointers, facilitating adjustment. The scale and pointers form a visual ruler, allowing operators to directly read the current height value without additional measuring tools, reducing adjustment errors.

[0042] The mounting base 7 is equipped with an adjusting screw 14, which connects to the upper slider 12 or the lower slider 13. One end of the lower pressure roller 6 passes through the mounting base 7 and connects to the connecting assembly 10. The position of the upper pressure roller 5 or the lower pressure roller 6 is fixed by adjusting the screw 14. The adjusting screw 14 directly drives the slider, achieving high precision in height adjustment.

[0043] The connecting assembly 10 includes a pressing cylinder 15, a connecting seat 16, a connecting block 17, and a connecting shaft 18. The connecting seat 16 has a slot 19 along its height direction. The connecting block 17 is movably installed within the slot 19. The pressing cylinder 15 is mounted on the connecting seat 16, and its output shaft is connected to the connecting block 17. The connecting shaft 18 passes through the connecting block 17. The operation of the pressing cylinder 15 drives the connecting shaft 18 to move up and down along the slot 19. The combination of the pressing cylinder 15, the slot 19, and the connecting block 17 ensures that the displacement of the connecting shaft 18 is limited to a straight line, resulting in a unique and stable movement path. The connecting shaft 18 maintains synchronization with the height of the pressure roller, guaranteeing that the power docking position is always aligned with the center of the pressure roller.

[0044] The connecting block 17 is provided with a second reference strip 20, the bottom surface of which is a second reference surface, and the second reference surface is on the same horizontal plane as the central axis of the connecting shaft 18; the outer periphery of the lower slider 13 is provided with a first reference strip 22, the top surface of which is a first reference surface 23, and the first reference surface 23 is on the same horizontal plane as the central axis of the lower pressure roller 6; the connecting block 17 moves downward until the bottom surface of the second reference strip 20 contacts the top surface of the first reference strip 22, and the connecting shaft 18 and the lower pressure roller 6 are aligned.

[0045] In the structural design of this application, the pressure roller assembly 4 and the connecting assembly 10 are already positioned to achieve a one-to-one correspondence. For pipe fittings 42 with different curvatures, only the vertical height of the upper pressure roller 5 and the lower pressure roller 6 needs to be adjusted. Mechanical positioning is achieved through the surface-to-surface contact between the first reference strip 22 and the second reference strip 20, ensuring that the center of the connecting shaft 18 and the lower pressure roller 6 are on the same horizontal line, thus eliminating visual alignment errors.

[0046] A first connecting ring 24 is sleeved on one end of the lower pressure roller 6 passing through the mounting base 7, and a second connecting ring 25 is sleeved on the connecting shaft 18. A push cylinder 26 is mounted on the connecting block 17, and the output shaft of the push cylinder 26 is connected to the second connecting ring 25. After the connecting shaft 18 is aligned with the lower pressure roller 6, the push cylinder 26 operates to drive the second connecting ring 25 to move towards the first connecting ring 24, and the end face of the second connecting ring 25 is embedded in the first connecting ring 24. The mating of the first connecting ring 24 and the second connecting ring 25 can achieve relative position locking. The end faces of the first connecting ring 24 and the second connecting ring 25 fit together to form a rigid coupling, which transmits torque while locking the axial position to prevent disengagement during operation.

[0047] One end of the connecting shaft 18 is connected to the lower pressure roller 6, and the other end of the connecting shaft 18 is equipped with a docking port 27. The docking port 27 is connected to the power unit 9 via a retractable universal joint 28. The rotational power output by the power unit 9 is transmitted to the connecting shaft 18 through the universal joint 28, and the rotation of the connecting shaft 18 is synchronously transmitted to the lower pressure roller 6. In this application, the upper pressure roller 5 and the lower pressure roller 6 are quickly adjustable, and the connecting shaft 18 and the lower pressure roller 6 are quickly aligned and power is transmitted. Finally, the docking port 27 and the retractable universal joint 28 enable quick docking with the power unit 9 to transmit power.

[0048] The retractable universal joint 28 used in this application is a commercially available product that can be directly purchased, and its structure will not be elaborated here. The retractable universal joint 28 allows the power input end to maintain continuous transmission when the height of the pressure roller changes, compensating for axial displacement and angular deviation, without the need to disassemble and reassemble the transmission components.

[0049] The rest of the contents of Example 2 are the same as those of Example 1.

[0050] Example 3, as Figures 1 to 7 As shown, the cutting device 3 includes a base 29, an inclined seat 30, and a cutting seat 33. The base 29 is fixedly installed on the frame 1. One end of the inclined seat 30 is rotatably connected to the base 29, and the other end of the inclined seat 30 is fixedly connected by a fastener. The two sides of the inclined seat 30 are provided with slide rails 32, which are downwardly protruding curved strips. The cutting seat 33 is installed on the slide rails 32 and is connected to a drive cylinder 34. The drive cylinder 34 drives the cutting seat 33 to move along the slide rails 32.

[0051] The connection structure between the tilt seat 30 and the base 29 enables the tilt angle of the tilt seat 30 to be adjustable. The tilt seat 30 can rotate around the base 29 and be locked, so that the movement trajectory of the cutting seat 33 is consistent with the instantaneous curvature tangent direction of the pipe fitting 42, ensuring the perpendicularity of the cut. The curved slide rail 32 provides a guide path for the cutting seat 33 that matches the curvature of the pipe fitting 42, ensuring that the relative position between the tool and the pipe fitting 42 remains constant during the cutting process.

[0052] In this application, in order to improve efficiency and enhance the cutting accuracy of the pipe fitting 42, the cutting device 3 is designed to be a follower, and the cutting seat 33 moves synchronously with the movement of the pipe fitting 42 to perform cutting.

[0053] The cutting seat 33 includes a top plate 35 and side plates 36 disposed on both sides below the top plate 35. A rack 37 is installed below one of the side plates 36. The bottom surface of the rack 37 is a toothed surface and a downwardly convex arc-shaped surface. The drive cylinder 34 is a rotary motor. The output shaft of the drive cylinder 34 is connected to a gear. The gear is located below the rack 37 and meshes with the toothed surface of the rack 37.

[0054] Traditional methods of driving the cutting seat 33 involve using a cylinder, which suffers from unstable air intake during operation. This application employs a combination of a motor and an arc-shaped toothed surface, enabling stable movement of the cutting seat 33 along the curved strip. The meshing transmission of the motor, gears, and arc-shaped rack 37 eliminates air pressure fluctuations, resulting in a stable moving speed for the cutting seat 33 and improved consistency in cut quality.

[0055] The side plate 36 is provided with a plurality of vertical rollers 39, which are regularly arranged below the slide rail 32, and the surfaces of the vertical rollers 39 are in contact with the bottom surface of the slide rail 32; the side plate 36 is provided with a plurality of horizontal rollers 40, which are regularly arranged on the outside of the slide rail 32, and the surfaces of the horizontal rollers 40 are in contact with the side surface of the slide rail 32; two sliding base blocks 41 are installed below the top plate 35, and the bottom surfaces of the sliding base blocks 41 are in contact with the top surface of the slide rail 32, and the bottom surfaces of the sliding base blocks 41 are adapted to the top surface of the slide rail 32.

[0056] The vertical roller 39, the horizontal roller 40, and the sliding base block 41 form a three-sided constraint, and the cutting seat 33 retains only the degree of freedom along the slide rail 32, eliminating swaying and improving the straightness of movement. At this point, the cutting seat 33 has been fully and stably installed on the tilting seat 30 and moves completely according to the design of the slide rail 32, matching the movement trajectory of the pipe fitting 42.

[0057] In this application, the cutting seat 33 is equipped with a cutting block and a cutting tool. The cutting tool is connected to a power cylinder. The pipe 42 passes through the cutting block, and the power cylinder drives the cutting tool to cut downwards, severing the pipe 42 that has passed through the cutting block. The power cylinder directly punches downwards to complete the cutting, resulting in a short action path, a neat cut surface, and reduced secondary burr treatment.

[0058] The other contents of Example 3 are the same as those of Example 1 or Example 2.

[0059] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A roller bending device with adjustable curvature, characterized in that, The device includes a frame (1), on which a bending device (2) and a cutting device (3) are respectively installed. The bending device (2) includes multiple sets of pressure roller assemblies (4) arranged along the forward direction of the pipe (42). The pressure roller assembly (4) includes an upper pressure roller (5), a lower pressure roller (6), and two mounting seats (7) on the left and right. The two ends of the upper pressure roller (5) and the two ends of the lower pressure roller (6) are adjustablely mounted at the mounting seats (7). One end of the bending device (2) is provided with a docking device (8) and a power device (9). The docking device (8) includes multiple adjustable connecting components (10). The positions of the connecting components (10) and the pressure roller assembly (4) correspond one-to-one. One end of the upper pressure roller (5) or the lower pressure roller (6) is connected to the power device (9) through the connecting components (10).

2. The roller bending equipment with adjustable curvature according to claim 1, characterized in that, The mounting base (7) has a sliding groove (11) along the height direction. An upper slider (12) and a lower slider (13) are installed in the sliding groove (11). The upper slider (12) and the lower slider (13) can move up and down along the sliding groove (11) to adjust the height.

3. The roller bending equipment with adjustable curvature according to claim 1, characterized in that, The mounting base (7) is provided with an adjusting screw (14), which is connected to the upper slider (12) or the lower slider (13); one end of the lower pressure roller (6) passes through the mounting base (7) and is connected to the connecting assembly (10).

4. The roller bending equipment with adjustable curvature according to claim 2, characterized in that, The connecting assembly (10) includes a pressing cylinder (15), a connecting seat (16), a connecting block (17), and a connecting shaft (18). The connecting seat (16) has a slot (19) along the height direction. The connecting block (17) is movably installed in the slot (19). The pressing cylinder (15) is installed on the connecting seat (16). The output shaft of the pressing cylinder (15) is connected to the connecting block (17). The connecting shaft (18) passes through the connecting block (17). When the pressing cylinder (15) works, it drives the connecting shaft (18) to move up and down along the slot (19).

5. The roller bending device with adjustable curvature according to claim 4, characterized in that, The connecting block (17) is provided with a second reference strip (20), the bottom surface of the second reference strip (20) is the second reference surface, and the second reference surface is on the same horizontal plane as the central axis of the connecting shaft (18); the outer periphery of the lower slider (13) is provided with a first reference strip (22), the top surface of the first reference strip (22) is the first reference surface (23), and the first reference surface (23) is on the same horizontal plane as the central axis of the lower pressure roller (6); the connecting block (17) moves downward until the bottom surface of the second reference strip (20) contacts the top surface of the first reference strip (22), and the connecting shaft (18) and the lower pressure roller (6) are aligned.

6. The roller bending device with adjustable curvature according to claim 4, characterized in that, A first connecting ring (24) is provided on one end of the lower pressure roller (6) passing through the mounting base (7), and a second connecting ring (25) is provided on the connecting shaft (18). A push cylinder (26) is installed on the connecting block (17), and the output shaft of the push cylinder (26) is connected to the second connecting ring (25). After the connecting shaft (18) is aligned with the lower pressure roller (6), the push cylinder (26) works to drive the second connecting ring (25) to move toward the first connecting ring (24), and the end face of the second connecting ring (25) is embedded in the first connecting ring (24).

7. The roller bending equipment with adjustable curvature according to claim 4, characterized in that, One end of the connecting shaft (18) is connected to the lower pressure roller (6), and the other end of the connecting shaft (18) is equipped with a docking port (27). The docking port (27) is connected to the power device (9) through a retractable universal joint (28). The power device (9) outputs rotational power and transmits it to the connecting shaft (18) through the universal joint (28). The rotation of the connecting shaft (18) is synchronously transmitted to the lower pressure roller (6).

8. The roller bending device with adjustable curvature according to claim 1, characterized in that, The cutting device (3) includes a base (29), an inclined seat (30) and a cutting seat (33). The base (29) is fixedly installed on the frame (1). One end of the inclined seat (30) is rotatably connected to the base (29), and the other end of the inclined seat (30) is fixedly connected by a fastener. The two sides of the inclined seat (30) are provided with a slide rail (32). The slide rail (32) is a downwardly protruding curved strip. The cutting seat (33) is installed on the slide rail (32). The cutting seat (33) is connected to a drive cylinder (34). The drive cylinder (34) works to drive the cutting seat (33) to move along the slide rail (32).

9. The roller bending device with adjustable curvature according to claim 8, characterized in that, The cutting seat (33) includes a top plate (35) and side plates (36) disposed below both sides of the top plate (35). A rack (37) is installed below one of the side plates (36). The bottom surface of the rack (37) is a tooth surface and the bottom surface of the rack (37) is a downwardly convex arc surface. The drive cylinder (34) is a rotary motor. The output shaft of the drive cylinder (34) is connected to a gear. The gear is located below the rack (37) and meshes with the tooth surface of the rack (37).

10. The roller bending device with adjustable curvature according to claim 9, characterized in that, The side plate (36) is provided with multiple vertical rollers (39), which are regularly arranged below the slide rail (32), and the surface of the vertical rollers (39) is in contact with the bottom surface of the slide rail (32); the side plate (36) is provided with multiple horizontal rollers (40), which are regularly arranged on the outside of the slide rail (32), and the surface of the horizontal rollers (40) is in contact with the side of the slide rail (32); two sliding base blocks (41) are installed below the top plate (35), and the bottom surface of the sliding base block (41) is in contact with the top surface of the slide rail (32), and the bottom surface of the sliding base block (41) is adapted to the top surface of the slide rail (32).

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