Clamping structure of pipe bending machine

Abstract

The invention discloses a pipe bending machine clamping structure which comprises a support, a mounting base is arranged on the support, an outer ring is fixedly connected to the end of the mounting base, an inner ring is arranged in the outer ring, a pressing block is arranged in the middle of the inner ring, and the inner ring is connected with an angle adjusting mechanism.

Description

Technical Field

[0001] The invention belongs to the field of pipe bending machines, and in particular relates to a clamping structure for a pipe bending machine. Background Art

[0002] Pipe bending machines are widely used in the manufacturing industry, and are usually used to produce various types of pipes and pipe fittings. Pipe fittings must be stably clamped during bending to be able to be bent normally. Currently, when performing multi-stage bending of pipe fittings (such as seat bracket structures), after the previous bending, the pipe fittings need to be loosened and manually rotated to a certain angle to be bent again, and then bent into a specified shape. However, during the operation, it is difficult to ensure that the pipe fittings are in an accurate posture after the clamps are loosened, and the bending shape of the pipe fittings is difficult to be uniform and stable, resulting in a high rate of product failures. Manual operation also leads to high labor intensity and low work efficiency for the staff.

[0003] The utility model patent with publication number CN220347767U was published on January 16, 2024, and its name is a pipe bending clamping tool, which includes a base frame, a mounting seat, a supporting structure, a clamping assembly and a driving structure. The mounting seat is rotatably arranged on the base frame; the supporting structure is arranged on the mounting seat for supporting the pipe bending; the clamping assembly is slidably arranged on the mounting seat for clamping the pipe bending; the driving structure is arranged on the mounting seat and connected to the clamping assembly for driving the clamping assembly to slide. This pipe bending clamping tool also cannot solve the technical problems recorded above. Summary of the invention

[0004] The purpose of the present invention is to provide a pipe bending machine clamping structure with high working efficiency, improved product quality and reduced manual labor intensity in view of the deficiencies in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The pipe bending machine clamping structure comprises a bracket, a mounting seat is arranged on the bracket, an outer ring is fixedly connected to the end of the mounting seat, an inner ring is arranged inside the outer ring, a pressure block is arranged in the middle of the inner ring, and the inner ring is connected to an angle adjustment mechanism.

[0007] The angle adjustment mechanism includes a first drive motor, which is arranged on a mounting seat, an output shaft of the second drive motor is connected to a driving wheel, a driven wheel is arranged on the outer ring, a synchronous belt is connected between the driving wheel and the driven wheel, a driving gear is arranged between the outer rings, the driven wheel is connected to the driving gear, the inner ring includes an inner gear and a wheel plate, the inner gear is fixedly connected between the wheel plates, and the inner gear is meshed with the driving gear.

[0008] A cylinder is provided on the inner gear above the pressure block, and the pressure block includes a first pressure block and a second pressure block. The cylinder is connected to the first pressure block, and pressure grooves are provided on the first pressure block and the second pressure block. The pressure grooves are arranged opposite to each other, and sliding grooves are provided on both sides of the first pressure block and the second pressure block.

[0009] A second driving motor is disposed at the top of the bracket, an output shaft of the second driving motor is connected to a screw rod, a nut is disposed on the screw rod, and the mounting seat is fixedly connected to the nut.

[0010] One side of the outer ring and the inner ring is provided with an opening.

[0011] The edge of the wheel disc is provided with a flange, and fastening bolts are connected between the outer rings.

[0012] An extension plate is arranged at the bottom end of the bracket below the mounting seat, a support rod is arranged between the mounting seat and the extension plate, and the support rod passes through the extension plate.

[0013] Auxiliary gears are also arranged between the outer rings. The auxiliary gears are arranged at equal intervals and mesh with the internal gears.

[0014] A slide rail is provided on the side of the bracket, and a slider is provided on the end of the mounting seat. The slider cooperates with the slide rail, and the slide rail and the slider are arranged in pairs.

[0015] The outer side of the mounting seat is provided with reinforcing ribs, and the outer side of the bracket is provided with weight-reducing holes.

[0016] The technical effect of the present invention is as follows: by adopting the clamping structure of the pipe bending machine of the present invention, the angle of the inner ring is adjusted by driving the driving motor, thereby eliminating the operation of repeatedly clamping the pipe fittings during multi-stage bending production, and under the reliable clamping of the pipe fittings by the pressing block, the pipe fittings can be ensured to be in an accurate posture, the formed shape of the pipe fittings is uniform, and a high qualified rate of the products is guaranteed, while also reducing the difficulty of manual operation, reducing the operating steps, and improving production efficiency; the structural design is compact and has high stability, which can effectively improve the working efficiency of the pipe bending machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, which show the following contents:

[0018] Figure 1 It is a structural schematic diagram of the clamping structure of the pipe bender of the present invention;

[0019] Figure 2 It is a right side view of the clamping structure of the pipe bender of the present invention;

[0020] Figure 3 It is a left side view of the clamping structure of the pipe bender of the present invention;

[0021] Figure 4It is a schematic diagram of the assembly of the outer ring and the inner ring on the mounting seat of the present invention;

[0022] Figure 5 is a schematic structural diagram of the mounting seat of the present invention with the outer ring removed;

[0023] Figure 6 It is a schematic diagram of the structure of the outer ring and the inner ring of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the inner ring of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the cylinder and the pressure block.

[0026] The markings in the figure are: 1. bracket; 11. second drive motor; 12. screw rod; 13. nut; 14. slide rail; 15. slider; 16. extension plate; 17. support rod; 18. weight reduction hole; 2. mounting seat; 21. first drive motor; 22. driving wheel; 23. driven wheel; 24. synchronous belt; 25. connecting shaft; 26. bearing; 27. reinforcing rib; 3. outer ring; 31. drive gear; 32. auxiliary gear; 33. fastening bolt; 34. opening; 4. inner ring; 41. wheel disc; 42. internal gear; 43. cylinder; 44. first pressure block; 45. second pressure block; 46. pressure groove; 47. slide groove; 48. flange. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0028] like Figures 1 to 8 As shown, the pipe bending machine clamping structure includes a bracket 1, a mounting seat 2 is provided on the bracket 1, an outer ring 3 is fixedly connected to the end of the mounting seat 2, an inner ring 4 is provided inside the outer ring 3, a pressure block is provided in the middle of the inner ring 4, and the inner ring 4 is connected to an angle adjustment mechanism.

[0029] The overall structure of the pipe bending machine clamping structure includes a bracket 1 and a mounting base 2, and all parts are installed on the bracket 1 and the mounting base 2. The structure is highly compact, the moving direction of the mounting base 2 is vertical, and the rotation of the inner ring 4 is also in a vertical plane. Therefore, the pipe bending machine clamping structure is convenient for direct installation on an existing pipe bending machine, occupies a small space, has no spatial obstruction to other structures on the pipe bending machine, and reduces the purchase cost of the pipe bending equipment.

[0030] like Figures 1 to 5As shown, the angle adjustment mechanism includes a first drive motor 21, which is arranged on the mounting seat 2, the output shaft of the second drive motor 11 is connected to the driving wheel 22, the outer ring 3 is provided with a driven wheel 23, the driving wheel 22 and the driven wheel 23 are connected with a synchronous belt 24, a driving gear 31 is provided between the outer rings 3, the driven wheel 23 is connected to the driving gear 31, the inner ring 4 includes an internal gear 42 and a wheel plate 41, the internal gear 42 is fixedly connected between the wheel plates 41, and the internal gear 42 is meshed with the driving gear 31. In the above structure, the power of the first drive motor 21 is transmitted to the inner gear 42 through the driving wheel 22, the synchronous belt 24, the driven wheel 23 and the driving gear 31 in sequence, so as to realize the rotation of the inner ring 4. When the pipe is clamped by the pressure block, the posture of the clamped pipe is adjusted by the rotation of the inner ring 4. When the pipe completes the front bending process, there is no need to loosen the clamping of the pressure block. It is only necessary to start the first drive motor 21 to drive the inner ring 4 to rotate to achieve the angle adjustment of the pipe, and the back bending process can be carried out normally. The first drive motor 21 drives the inner ring 4 instead of manual operation, and there is no need to re-clamp the pipe, which reduces the difficulty and labor intensity of manual operation and improves work efficiency. The rotation process is realized by the meshing transmission of gears, which has high stability and accurate and reliable motion transmission, can ensure the position accuracy of the pipe, and thus ensure reliable product quality. A connecting shaft 25 is fixedly connected to the middle of the driving gear 31, and one end of the connecting shaft 25 extends out of the outer ring 3 and is fixedly connected to the driven wheel 23, that is, the driving gear 31 rotates synchronously with the driven wheel 23 through the connecting shaft 25, and bearings 26 are arranged at both ends of the connecting shaft 25 to prevent power from being transmitted to the outer ring 3. Similarly, the auxiliary gear 32 is also provided with a connecting shaft and bearings so that it can be stably installed between the outer ring 3.

[0031] like Figures 4 to 8 As shown, a cylinder 43 is provided on the inner gear 42 above the pressing block, and the pressing block includes a first pressing block 44 and a second pressing block 45. The cylinder 43 connects the first pressing block 44, and the first pressing block 44 and the second pressing block 45 are both provided with a pressing groove 46, and the pressing grooves 46 are arranged opposite to each other. Both sides of the first pressing block 44 and the second pressing block 45 are provided with a sliding groove 47. The clamping of the pressing block is realized by the cylinder 43, which is simple to operate and easy to control. The second pressing block 45 is fixed to the inner ring 4, and the first pressing block 44 is connected to the piston rod of the cylinder 43. The pressing grooves 46 are arranged on the opposite sides of the two, which are used to clamp the middle part of the pipe fitting, so as to ensure that the middle part of the pipe fitting is in a horizontal posture. If a double bending machine is used to bend both ends of the pipe fitting synchronously, the overall forming quality of the pipe fitting can be guaranteed. In order to further improve the structural compactness of the outer ring 3 and the inner ring 4, slide grooves 47 are provided on both sides of the pressure block so that the slide grooves 47 cooperate with the raised portions at the middle opening of the inner gear 42. Since the first pressure block 44 and the second pressure block 45 are respectively a moving part and a fixed part, this design eliminates the need for a guide structure while ensuring the accuracy of the moving direction of the first pressure block 44, improves the stability of the second pressure block 45, and the provision of the slide grooves 47 facilitates the installation of the pressure blocks.

[0032] like Figures 1 to 3 As shown, a second drive motor 11 is provided at the top of the bracket 1, and a screw rod 12 is connected to the output shaft of the second drive motor 11, a nut 13 is provided on the screw rod 12, and the mounting seat 2 is fixedly connected to the nut 13. The second drive motor 11 is driven by the screw rod 12 to adjust the height position of the mounting seat 2, which is used to adjust the pipe fitting to the plane where the bending die in the pipe bending machine is located, so as to perform the bending process, and is also used for the pipe fitting to avoid other parts on the pipe bending machine during the feeding and discharging process, so as to prevent spatial interference.

[0033] like Figures 1 to 7 As shown, both the outer ring 3 and the inner ring 4 are provided with openings 33. The setting of the openings 33 realizes the radial feeding and discharging operation of the pipe fittings, which greatly reduces the difficulty of operation compared with the axial feeding method. The radial feeding / discharging method is easy to match with the loading and unloading equipment of the pipe bending machine, which is conducive to realizing the automation of the production line and improving production efficiency.

[0034] like Figure 7 As shown, a flange 48 is provided on the edge of the wheel disc 41, and a fastening bolt 33 is also connected between the outer rings 3. The outer ring 3 and the wheel disc 41 are each provided in a pair, the inner ring 4 is located between the outer rings 3, the inner gear 42 is located between the wheel discs 41, and the outer rings 3 and the wheel discs 41 and the inner gear 42 are fixed by fastening bolts 33; in order to improve the stability of the inner ring 4, a flange 48 is provided on the edge of the inner ring 4, so that the outer ring 3 has an axial limiting effect on the inner ring 4.

[0035] like Figures 1 to 3 As shown, the bottom end of the bracket 1 is provided with an extension plate 16 below the mounting seat 2, and a support rod 17 is provided between the mounting seat 2 and the extension plate 16, and the support rod 17 passes through the extension plate 16. The support rod 17 is used to support the mounting seat 2 to ensure the horizontality of the mounting seat 2, thereby ensuring the position accuracy of the components installed on the mounting seat 2.

[0036] like Figure 5 As shown, auxiliary gears 32 are also provided between the outer rings 3, and the auxiliary gears 32 are arranged at equal intervals, and the auxiliary gears 32 mesh with the inner gear 42. The auxiliary gears 32 and the driving gear 31 are both located outside the inner gear 42 in the radial direction, and the auxiliary gears 32 can rotate synchronously with the inner gear 42, and play a radial supporting role for the inner gear 42. The multiple auxiliary gears 32 improve the stability of the meshing transmission of the inner gear 42.

[0037] like Figures 1 to 4As shown, a slide rail 14 is provided on the side of the bracket 1, and a slider 15 is provided at the end of the mounting seat 2. The slider 15 cooperates with the slide rail 14, and the slide rail 14 and the slider 15 are arranged in pairs. The above structure provides a guide for the vertical movement of the mounting seat 2. Under the cooperation of multiple slide rails 14 and sliders 15, the accuracy of the moving direction of the mounting seat 2 is further improved, and the bearing burden of the screw rod 12 is also reduced to avoid damage to it.

[0038] like Figures 1 to 5 As shown, a reinforcing rib 27 is provided on the outside of the mounting seat 2, and a weight-reducing hole 18 is provided on the outside of the bracket 1. The mounting seat 2 and the bracket 1 are both formed by welding a plurality of plates to reduce the overall weight. Both are provided with a plurality of holes to provide installation positions for other components. The weight-reducing hole 18 is used to reduce the weight of the bracket 1, and the reinforcing rib 27 improves the structural strength of the mounting seat 2.

[0039] The clamping structure of the pipe bending machine works as follows: the second drive motor 11 is started to move the mounting seat 2 vertically so that the opening 33 is aligned with the feeding device, the feeding device feeds the pipe fitting into the space between the pressing blocks, the cylinder 43 is started to clamp the pipe fitting, the mounting seat 2 is moved vertically so that the pipe fitting and the bending die are coplanar, and the bending process can be carried out. After the front section of the bending process is completed, the first drive motor 21 is started to rotate the internal gear 42, thereby driving the pipe fitting to rotate a certain angle, and the bending die in the pipe bending machine moves horizontally to switch position to bend the pipe fitting at the second location. The operation of the rear section of the bending process is similar. After the pipe fitting is formed, the cylinder 43 resets the first pressing block 44 to release the clamping, and the mounting seat 2 is reset to align the opening 33 with the discharging device, and the pipe fitting can be taken out.

[0040] The clamping structure of the pipe bending machine adjusts the angle of the inner ring 4 by driving the driving motor, eliminating the operation of repeatedly clamping the pipe during multi-stage bending production. Under the reliable clamping of the pipe by the pressing block, the pipe can be ensured to be in an accurate posture, the formed shape of the pipe can be uniform, and a high qualified rate of the product can be guaranteed. At the same time, the difficulty of manual operation is reduced, the operation steps are reduced, and the production efficiency is improved. The structure is compact in design and highly stable, which can effectively improve the working efficiency of the pipe bending machine.

[0041] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A pipe bending machine clamping structure, characterized in that: The invention comprises a bracket (1), wherein a mounting seat (2) is provided on the bracket (1), an outer ring (3) is fixedly connected to the end of the mounting seat (2), an inner ring (4) is provided inside the outer ring (3), a pressure block is provided in the middle of the inner ring (4), and the inner ring (4) is connected to an angle adjustment mechanism.

2. The pipe bender clamping structure according to claim 1, characterized in that: The angle adjustment mechanism comprises a first drive motor (21), the first drive motor (21) is arranged on a mounting seat (2), the output shaft of the second drive motor (11) is connected to a driving wheel (22), the outer ring (3) is provided with a driven wheel (23), the driving wheel (22) and the driven wheel (23) are connected with a synchronous belt (24), a driving gear (31) is arranged between the outer rings (3), the driven wheel (23) is connected to the driving gear (31), the inner ring (4) comprises an internal gear (42) and a wheel disc (41), the internal gear (42) is fixedly connected between the wheel discs (41), and the internal gear (42) is meshed with the driving gear (31).

3. The pipe bender clamping structure according to claim 2, characterized in that: A cylinder (43) is provided on the inner gear (42) above the pressure block, and the pressure block includes a first pressure block (44) and a second pressure block (45). The cylinder (43) is connected to the first pressure block (44). The first pressure block (44) and the second pressure block (45) are both provided with pressure grooves (46), and the pressure grooves (46) are arranged opposite to each other. Slide grooves (47) are provided on both sides of the first pressure block (44) and the second pressure block (45).

4. The pipe bender clamping structure according to claim 3, characterized in that: A second drive motor (11) is provided at the top of the bracket (1); an output shaft of the second drive motor (11) is connected to a screw rod (12); a nut (13) is provided on the screw rod (12); and the mounting seat (2) is fixedly connected to the nut (13).

5. The pipe bender clamping structure according to claim 4, characterized in that: One side of the outer ring (3) and the inner ring (4) is provided with an opening (33).

6. The pipe bender clamping structure according to claim 5, characterized in that: The edge of the wheel disc (41) is provided with a flange (48), and the outer rings (3) are also connected with fastening bolts (33).

7. The pipe bender clamping structure according to any one of claims 1 to 6, characterized in that: An extension plate (16) is provided at the bottom end of the bracket (1) below the mounting seat (2), a support rod (17) is provided between the mounting seat (2) and the extension plate (16), and the support rod (17) passes through the extension plate (16).

8. The pipe bender clamping structure according to claim 2, characterized in that: Auxiliary gears (32) are also provided between the outer rings (3), the auxiliary gears (32) are arranged at equal intervals, and the auxiliary gears (32) are meshed with the internal gears (42).

9. The pipe bender clamping structure according to claim 7, characterized in that: The side of the bracket (1) is provided with a slide rail (14), the end of the mounting seat (2) is provided with a slider (15), the slider (15) cooperates with the slide rail (14), and the slide rail (14) and the slider (15) are arranged in pairs.

10. The pipe bender clamping structure according to claim 9, characterized in that: The outer side of the mounting seat (2) is provided with a reinforcing rib (27), and the outer side of the bracket (1) is provided with a weight-reducing hole (18).

Images