Pipe bending equipment

Abstract

The present invention relates to the field of mechanical processing, specifically a pipe bending processing equipment, which includes: a pipe clamping mechanism, which is arranged on a workbench, clamps one end of the pipe and drives the pipe to move laterally; a slide plate a, which is arranged on the workbench for transverse sliding, and multiple groups of internal support mechanisms are arranged on the slide plate a, and the multiple groups of internal support mechanisms have different support radiuses for the pipe; an external pressure roller adjustment mechanism, which is arranged on the workbench, and the external pressure roller adjustment mechanism cooperates with different internal support mechanisms to bend the pipe with different radiuses; and a control system, which is arranged on the workbench, and the control system is controlled and connected with the pipe clamping mechanism and the external pressure roller adjustment mechanism. The present invention can provide good support for the pipe throughout the whole process, and prevent the pipe from being deformed unexpectedly due to local support during the pipe bending process; it can continuously process multiple bending sections with different diameters on a pipe, and has high production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a pipe bending processing device. Background Art

[0002] Pipe bending is the process of bending metal pipes by mechanical or thermal processing to produce a certain angle of bend to meet the needs of pipeline layout in the pipeline system. This technology is widely used in industries such as petroleum, chemical, construction, water supply, and heating.

[0003] The Chinese patent with the announcement number CN107363133B discloses a dieless automatic pipe bending machine with continuously adjustable bending radius, and provides a pipe bending method performed by the dieless automatic pipe bending machine: the pipe is placed between the inner pressure roller and the outer pressure roller, the pipe is fixed by the inner chuck, the outer chuck and the mandrel, and the pipe is bent by the revolution of the outer pressure roller, and then the pipe is bent by the revolution and inner rotation of the inner pressure roller and the revolution of the outer pressure roller. The inner chuck and the outer chuck realize the positioning and clamping of the pipe, fix the pipe during the whole bending process, and can meet the requirements of different bending radius.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the pipe is supported and fixed only by the inner pressure roller and the outer pressure roller, which is similar to point contact, and the supporting effect on the pipe is poor. The uncontacted parts of the pipe are prone to deformation during the bending process, and it is difficult to ensure that the pipe is bent along the expected path. In addition, when the same pipe requires multiple bending radii, it is necessary to repeatedly adjust the positions of the inner chuck, the outer chuck, the inner pressure roller and the outer pressure roller, which is extremely cumbersome to operate and has low work efficiency. Summary of the invention

[0005] The purpose of the present invention is to propose a pipe bending processing equipment to address the problems in the background technology that the pipe cannot be fully supported during bending, unexpected deformation may occur, and the same pipe requires multiple bending radii, which is cumbersome to operate.

[0006] In one aspect, the present invention provides a pipe bending processing device, comprising a workbench and a pipe to be processed; and further comprising:

[0007] The pipe clamping mechanism is arranged on the workbench, clamps one end of the pipe and drives the pipe to move laterally;

[0008] Slide plate a is arranged on the workbench for transverse sliding. Multiple groups of internal support mechanisms are arranged on the slide plate a. The multiple groups of internal support mechanisms support the pipe from one side. The multiple groups of internal support mechanisms have different support radius for the pipe. The bending radius of the pipe can be changed by changing the position of the slide plate a.

[0009] The outer pressure roller adjustment mechanism is arranged on the workbench, and the outer pressure roller adjustment mechanism cooperates with different inner support mechanisms to bend the pipe with different radii;

[0010] And a control system is arranged on the workbench, and the control system is controlled and connected with the pipe clamping mechanism and the outer pressure roller adjusting mechanism.

[0011] Preferably, the pipe clamping mechanism includes a fixed plate a arranged on the workbench, a sliding frame slidably arranged on the fixed plate a, a three-jaw chuck arranged on the sliding frame, a rotating power device arranged on the sliding frame to drive the three-jaw chuck to rotate, and a rodless cylinder arranged on the fixed plate a to drive the sliding frame to move horizontally.

[0012] Preferably, the internal support mechanism includes a fixed plate b arranged on the slide plate a, a support rod a horizontally and rotatably arranged on the fixed plate b, a support rod b vertically arranged on the support rod a, an internal support roller rotatably arranged on the top of the support rod b, a limit plate arranged on the support rod b, and a torsion spring sleeved on the support rod a, and the two ends of the torsion spring are respectively connected to the fixed plate b and the support rod b; multiple groups of internal support mechanisms are arranged in parallel, the diameters of the multiple internal support rollers are different, the distances between the support rods b and the pipe in the multiple groups of internal support mechanisms are different, and an annular groove matching the pipe is arranged on the outer peripheral wall of the inner support roller.

[0013] Preferably, a telescopic device a is horizontally arranged on the workbench, the telescopic end of the telescopic device a is connected to the skateboard a, and the control system is control-connected to the telescopic device a; a plurality of induction plates are arranged on the skateboard a, a mounting seat is arranged on the workbench, a position sensor is arranged on the mounting seat, and the position of the skateboard a is controlled by the cooperation between the position sensor and the induction plate so as to select different internal support mechanisms; the control system is connected to the position sensor for signal transmission.

[0014] Preferably, a plurality of limit blocks are arranged on the workbench, and the support rod b in the inner support mechanism in the non-use state rests against the limit blocks; a telescopic device b is vertically arranged on the workbench, and the telescopic device b is located at the position of the inner support mechanism in the working state, and the telescopic device b pushes the limit plate to a horizontal state when it is extended.

[0015] Preferably, the external pressure roller adjustment mechanism includes a support frame b arranged on the workbench, a slide plate b longitudinally slidably arranged on the support frame b, a support column a arranged at the bottom of the slide plate b, a flat plate longitudinally arranged at the bottom of the support column a, a slide plate c longitudinally slidably arranged at the bottom of the flat plate, an external pressure roller arranged at the bottom of the slide plate c, and an annular groove matching the pipe is arranged on the outer peripheral wall of the external pressure roller; a motor is arranged in the slide plate b, the output shaft of the motor is connected to the support column a, and the control system is connected to the motor control; the external pressure roller and the internal support mechanism cooperate.

[0016] Preferably, a telescopic device c for driving the skateboard b to move longitudinally is provided on the support frame b, and a power component for driving the skateboard c to move longitudinally is provided on the support frame b, the power component includes an encoder motor arranged at the bottom of the flat plate, the output shaft of the encoder motor is connected with a screw, and a threaded hole matching with the screw is provided on the skateboard c, and the control system is controlled and connected with the telescopic device c and the encoder motor.

[0017] On the other hand, the present invention provides a processing method of a pipe bending processing device, comprising the following steps:

[0018] S1. Clamp the end of the pipe by the pipe clamping mechanism;

[0019] S2. The pipe is bent by the external pressure roller adjustment mechanism, and the internal support mechanism provides full support during the bending process;

[0020] S3, conveying the pipe forward through the pipe clamping mechanism, and changing the bending radius by changing the position of the slide a;

[0021] S4, changing the state of the outer pressure roller adjustment mechanism to make it cooperate with the corresponding inner support mechanism, bending the pipe again, and realizing the processing of bending sections with different radii on the same pipe;

[0022] S5. Repeat S3-S4 until all the pipes are bent, and then remove the pipes from the pipe clamping mechanism.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects: by arranging an outer clamp, an inner support roller and an outer pressure roller, during the pipe bending process, the pipe is always in close contact with the inner support roller, which can provide good support for the pipe throughout the whole process, preventing the pipe from unexpectedly deforming due to local support during the pipe bending process, thereby ensuring the pipe bending effect; by arranging an outer pressure roller adjustment mechanism and multiple inner support mechanisms, the bending radius can be automatically and quickly adjusted, which is more convenient to use, and multiple bending sections of different diameters can be continuously processed on one pipe, with high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 and Figure 2 Each of them is a stereogram of an embodiment of the present invention;

[0025] Figure 3 It is a structural diagram of the workbench;

[0026] Figure 4 for Figure 1 Schematic diagram of some structures;

[0027] Figure 5 It is a structural schematic diagram of the outer pressure roller adjustment mechanism.

[0028] : Illustrations: 1. workbench; 2. fixed plate a; 3. rodless cylinder; 4. sliding frame; 5. rotary power device; 6. three-jaw chuck; 7. pipe; 8. slide groove a; 9. slide plate a; 10. telescopic device a; 11. fixed plate b; 12. support rod a; 13. support rod b; 14. inner support roller; 15. torsion spring; 16. limit block; 17. limit plate; 18. telescopic device b; 19. support frame a; 20. outer clamping plate; 21. induction plate; 22. mounting seat; 23. position sensor; 24. support frame b; 25. slide plate b; 26. telescopic device c; 27. support column a; 28. flat plate; 29. ​​slide plate c; 30. encoder motor; 31. screw; 32. support column b; 33. outer pressure roller. DETAILED DESCRIPTION

[0029] Embodiment 1, as Figure 1-Figure 2 As shown, a pipe bending processing device proposed by the present invention includes a workbench 1 and a pipe material 7 to be processed; and also includes:

[0030] The pipe clamping mechanism is arranged on the workbench 1, clamps one end of the pipe 7 and drives the pipe 7 to move laterally;

[0031] The slide plate a9 is arranged on the workbench 1 for transverse sliding. The slide plate a9 is provided with multiple groups of internal support mechanisms. The multiple groups of internal support mechanisms support the pipe 7 from one side. The multiple groups of internal support mechanisms have different support radius for the pipe 7. The bending radius of the pipe can be changed by changing the position of the slide plate a9. The workbench 1 is provided with a support frame a19. The support frame a19 is provided with an outer clamping plate 20. The outer clamping plate 20 is provided with a strip groove matching the pipe 7. The outer clamping plate 20 and the inner support mechanism are located on both sides of the pipe 7.

[0032] The outer pressure roller adjustment mechanism is arranged on the workbench 1, and the outer pressure roller adjustment mechanism cooperates with different inner support mechanisms to bend the pipe 7 with different radii;

[0033] And a control system is arranged on the workbench 1. The control system is controlled and connected with the pipe clamping mechanism and the external pressure roller adjustment mechanism. The control system changes the position of the pipe 7 by controlling the pipe clamping mechanism to realize automatic and continuous pipe bending. The control system cooperates with different internal support mechanisms by controlling the external pressure roller adjustment mechanism.

[0034] Embodiment 2, as Figure 3 As shown, a pipe bending processing equipment proposed by the present invention, compared with the first embodiment, this embodiment introduces the structure of the pipe clamping mechanism in detail.

[0035] The pipe clamping mechanism includes a fixed plate a2 arranged on the workbench 1, a sliding frame 4 slidably arranged on the fixed plate a2, a three-jaw chuck 6 arranged on the sliding frame 4, a rotating power device 5 arranged on the sliding frame 4 to drive the three-jaw chuck 6 to rotate, and a rodless cylinder 3 arranged on the fixed plate a2 to drive the sliding frame 4 to move horizontally; specifically, a plurality of sliding grooves a8 are arranged horizontally on the fixed plate a2, a plurality of sliding blocks cooperating with the sliding grooves a8 are arranged at the bottom of the sliding frame 4, a strip groove is arranged horizontally on the fixed plate a2, the rodless cylinder 3 is arranged in the strip groove, and the sliding part on the rodless cylinder 3 is connected to the bottom of the sliding frame 4; the three-jaw chuck 6 manually locks the pipe 7; the control system is controlled and connected to the rotating power device 5 and the rodless cylinder 3, and the moving distance of the sliding frame 4 driven by the rodless cylinder 3 is controlled by the control system, and the rotation angle of the three-jaw chuck 6 driven by the rotating power device 5 is controlled by the control system.

[0036] Embodiment three, as Figure 1 and Figure 4 As shown, a pipe bending processing equipment proposed by the present invention, compared with the first or second embodiment, this embodiment introduces the structure of the internal support mechanism in detail.

[0037] The inner support mechanism includes a fixed plate b11 arranged on the slide a9, a support rod a12 horizontally and rotatably arranged on the fixed plate b11, a support rod b13 vertically arranged on the support rod a12, an inner support roller 14 rotatably arranged on the top of the support rod b13, a limit plate 17 arranged on the support rod b13, and a torsion spring 15 sleeved on the support rod a12, and the two ends of the torsion spring 15 are respectively connected to the fixed plate b11 and the support rod b13; multiple groups of inner support mechanisms are arranged in parallel, the diameters of the multiple inner support rollers 14 are different, and the inner support rollers 14 in the multiple groups of inner support mechanisms are different. The distance between the support rod b13 and the pipe 7 is different. Specifically, the larger the diameter of the inner support roller 14, the farther the support rod b13 is from the pipe 7. It is necessary to ensure that when the support rod b13 is in a vertical state, the corresponding inner support rollers 14 can cooperate with the pipe 7. An annular groove that cooperates with the pipe 7 is provided on the outer peripheral wall of the inner support roller 14; in the inner support mechanism in the use state, the support rod b13 is in a vertical state, and in the inner support mechanism in the non-use state, under the action of the torsion spring 15, the support rod b13 is in an inclined state to make the inner support roller 14 disengage from the pipe 7.

[0038] A telescopic device a10 is horizontally arranged on the workbench 1, the telescopic end of the telescopic device a10 is connected to the skateboard a9, and the control system is control-connected to the telescopic device a10; a plurality of induction plates 21 are arranged on the skateboard a9, a mounting seat 22 is arranged on the workbench 1, and a position sensor 23 is arranged on the mounting seat 22, and the position of the skateboard a9 is controlled by the cooperation between the position sensor 23 and the induction plate 21 so as to select different internal support mechanisms; the control system is connected to the position sensor 23 for signal transmission.

[0039] A plurality of limit blocks 16 are arranged on the workbench 1. The support rod b13 in the inner support mechanism in the non-use state abuts against the limit block 16. In an optional embodiment, the support rod b13 contacts the limit block 16 after rotating twenty degrees. A telescopic device b18 is vertically arranged on the workbench 1. The telescopic device b18 is located at the position of the inner support mechanism in the working state. When the telescopic device b18 is extended, it pushes the limit plate 17 to a horizontal state. At this time, the support rod b13 is in a vertical state, and the corresponding inner support roller 14 just cooperates with the pipe 7 and can remain stable under the action of the torsion spring 15.

[0040] Embodiment 4, as Figure 1 and Figure 5 As shown, a pipe bending processing equipment proposed by the present invention, compared with the first embodiment, the second embodiment or the third embodiment, this embodiment introduces the structure of the external pressure roller adjustment mechanism in detail.

[0041] The outer pressure roller adjustment mechanism includes a support frame b24 arranged on the workbench 1, a slide plate b25 longitudinally slidably arranged on the support frame b24, a support column a27 arranged at the bottom of the slide plate b25, a flat plate 28 longitudinally arranged at the bottom of the support column a27, a slide plate c29 longitudinally slidably arranged at the bottom of the flat plate 28, and an outer pressure roller 33 arranged at the bottom of the slide plate c29, and an annular groove matching the pipe 7 is arranged on the outer peripheral wall of the outer pressure roller 33; a motor is arranged in the slide plate b25, the output shaft of the motor is connected to the support column a27, and the control system is connected to the motor control; the outer pressure roller 33 cooperates with the inner support mechanism, specifically, the outer pressure roller 33 contacts the inner support roller 14, the annular grooves on the outer pressure roller 33 and the inner support roller 14 cover the pipe 7, and the support column a27 and the inner support roller 14 are coaxial.

[0042] The support frame b24 is provided with a telescopic device c26 for driving the skateboard b25 to move longitudinally, and the support frame b24 is provided with a power assembly for driving the skateboard c29 to move longitudinally, the power assembly includes an encoder motor 30 arranged at the bottom of the flat plate 28, the output shaft of the encoder motor 30 is connected with a screw 31, and the skateboard c29 is provided with a threaded hole matching the screw 31, and the control system is controlled and connected with the telescopic device c26 and the encoder motor 30; specifically, a permanent magnet is arranged on the telescopic end of the telescopic device c26, and magnetic switches at multiple positions are arranged on the support frame b24. When the telescopic end of the telescopic device c26 moves to the permanent magnet to trigger the magnetic switch, the start and stop of the telescopic device c26 is controlled by the control system, thereby controlling the different telescopic amounts of the telescopic device c26.

[0043] Embodiment 5, a processing method based on the above-mentioned pipe bending processing equipment embodiment, comprises the following steps:

[0044] S1. Clamp the end of the pipe 7 by the pipe clamping mechanism. Specifically, pass the pipe 7 through the annular grooves on the inner support roller 14 and the outer pressure roller 33, then pass through the outer clamping plate 20, and finally clamp and fix it by the three-jaw chuck 6;

[0045] S2, the tube 7 is bent by the outer pressure roller adjustment mechanism, and the tube 7 is fully supported by the inner support mechanism during the bending process. Specifically, the motor in the slide plate b25 is started, and the outer pressure roller 33 is driven to revolve along the inner support roller 14 through the support column a27, the flat plate 28, the slide plate c29 and the support column b32 to return to the initial position after the set angle is set;

[0046] S3, convey the pipe 7 forward through the pipe clamping mechanism, rotate or not rotate the pipe 7 as needed, and change the bending radius by changing the position of the slide plate a9. Specifically, the pipe 7 is first conveyed forward by a set distance, and then the telescopic device b18 is contracted. Under the action of the torsion spring, the support rod b13 is rotated and separated from the pipe 7. Then the telescopic device a10 moves a set distance. According to program control, the distance is sensed by the sensing plate 21 and the position sensor 23. The corresponding inner support roller 14 is moved to the bending position as needed. The telescopic device b18 is then extended to adjust the support rod b13 to a vertical state through the limit plate 17, so that the other inner support roller 14 is reattached to the pipe 7.

[0047] S4, change the state of the outer pressure roller adjustment mechanism to make it cooperate with the corresponding inner support mechanism, bend the tube 7 again, and realize processing of bending sections with different radii on the same tube. Specifically, the encoder motor 30 drives the screw 31 to make the slide plate c29 slide, and the outer pressure roller 33 moves away from the inner support roller 14. Then the telescopic device c26 drives the slide plate b25 to move. The movement directions of the slide plates b25 and c29 are opposite. The support column a27 moves to be coaxial with the support rod b13. At this time, the outer pressure roller 33 just contacts with the inner support roller 14 again.

[0048] S5. Repeat S3-S4 until the tube 7 is completely bent, and then remove the tube 7 from the tube clamping mechanism.

[0049] In summary, in the present invention, by arranging the outer clamping plate 20, the inner supporting roller 14 and the outer pressure roller 33, during the pipe bending process, the pipe 7 is always in close contact with the inner supporting roller 14, and can provide good support for the pipe 7 throughout the whole process, preventing the pipe 7 from producing unexpected deformation due to local support during the pipe bending process, thereby ensuring the pipe bending effect of the pipe 7; by arranging the outer pressure roller adjustment mechanism and multiple internal supporting mechanisms, the bending radius can be automatically and quickly adjusted, which is more convenient to use, and multiple bending sections with different diameters can be continuously processed on a pipe 7, with high production efficiency.

[0050] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pipe bending processing device, comprising a workbench (1) and a pipe to be processed (7); characterized in that: Also includes: A pipe clamping mechanism is arranged on the workbench (1), clamps one end of the pipe (7) and drives the pipe (7) to move laterally; A slide plate a (9) is arranged on the workbench (1) for transverse sliding. A plurality of internal support mechanisms are arranged on the slide plate a (9). The plurality of internal support mechanisms support the pipe (7) from one side. The plurality of internal support mechanisms have different support radii for the pipe (7). The pipe bending radius can be changed by changing the position of the slide plate a (9). An external pressure roller adjustment mechanism is arranged on a workbench (1), and the external pressure roller adjustment mechanism cooperates with different internal support mechanisms to bend the pipe (7) to different radii; and a control system, which is arranged on the workbench (1), and the control system is control-connected to the pipe clamping mechanism and the outer pressure roller adjustment mechanism; The inner support mechanism comprises a fixed plate b (11) arranged on the slide plate a (9), a support rod a (12) horizontally and rotatably arranged on the fixed plate b (11), a support rod b (13) vertically arranged on the support rod a (12), an inner support roller (14) rotatably arranged on the top of the support rod b (13), a limit plate (17) arranged on the support rod b (13), and a torsion spring (15) sleeved on the support rod a (12), wherein two ends of the torsion spring (15) are respectively connected to the fixed plate b (11) and the support rod b (13); a plurality of groups of inner support mechanisms are arranged in parallel, the diameters of the plurality of inner support rollers (14) are different, the distances between the support rods b (13) and the pipe (7) in the plurality of groups of inner support mechanisms are different, and an annular groove matching the pipe (7) is arranged on the outer peripheral wall of the inner support roller (14); A plurality of limit blocks (16) are arranged on the workbench (1), and a support rod b (13) in the inner support mechanism in a non-use state abuts against the limit blocks (16); a telescopic device b (18) is vertically arranged on the workbench (1), and the telescopic device b (18) is located at the position of the inner support mechanism in a working state, and the telescopic device b (18) pushes the limit plate (17) to a horizontal state when it is in an extended state.

2. The pipe bending equipment according to claim 1, characterized in that: The pipe clamping mechanism comprises a fixed plate a (2) arranged on a workbench (1), a sliding frame (4) slidably arranged on the fixed plate a (2), a three-jaw chuck (6) arranged on the sliding frame (4), a rotating power device (5) arranged on the sliding frame (4) and driving the three-jaw chuck (6) to rotate, and a rodless cylinder (3) arranged on the fixed plate a (2) and driving the sliding frame (4) to move horizontally.

3. The pipe bending equipment according to claim 1, characterized in that: A telescopic device a (10) is disposed transversely on the workbench (1), the telescopic end of the telescopic device a (10) is connected to the slide plate a (9), and the control system is connected to the telescopic device a (10); a plurality of induction plates (21) are disposed on the slide plate a (9), a mounting seat (22) is disposed on the workbench (1), and a position sensor (23) is disposed on the mounting seat (22); the position of the slide plate a (9) is controlled by the cooperation between the position sensor (23) and the induction plate (21), thereby selecting different internal support mechanisms; and the control system is connected to the position sensor (23) for signal transmission.

4. The pipe bending equipment according to claim 1, characterized in that: The external pressure roller adjustment mechanism comprises a support frame b (24) arranged on the workbench (1), a slide plate b (25) longitudinally slidably arranged on the support frame b (24), a support column a (27) arranged at the bottom of the slide plate b (25), a plate (28) longitudinally arranged at the bottom of the support column a (27), a slide plate c (29) longitudinally slidably arranged at the bottom of the plate (28), an external pressure roller (33) arranged at the bottom of the slide plate c (29), and an annular groove matching with the pipe (7) is arranged on the outer peripheral wall of the external pressure roller (33); a motor is arranged in the slide plate b (25), the output shaft of the motor is connected to the support column a (27), and the control system is connected to the motor control; the external pressure roller (33) and the internal support mechanism cooperate.

5. The pipe bending equipment according to claim 4, characterized in that: The support frame b (24) is provided with a telescopic device c (26) for driving the slide plate b (25) to move longitudinally. The support frame b (24) is provided with a power assembly for driving the slide plate c (29) to move longitudinally. The power assembly comprises an encoder motor (30) arranged at the bottom of the flat plate (28). The output shaft of the encoder motor (30) is connected to a screw rod (31). The slide plate c (29) is provided with a threaded hole that matches the screw rod (31). The control system is control-connected to the telescopic device c (26) and the encoder motor (30).

6. A processing method of a pipe bending processing equipment, applicable to the pipe bending processing equipment as claimed in claim 1, characterized in that: The method comprises the following steps: S1, clamping the end of the pipe (7) by a pipe clamping mechanism; S2, bending the tube (7) by means of an external pressure roller adjustment mechanism, and the tube (7) is fully supported by the internal support mechanism during the bending process; S3, conveying the pipe (7) forward through the pipe clamping mechanism, and changing the bending radius by changing the position of the slide plate a (9); S4, changing the state of the outer pressure roller adjustment mechanism to make it cooperate with the corresponding inner support mechanism, and bending the pipe (7) again, so as to realize the processing of bending sections with different radii on the same pipe; S5. Repeat S3-S4 until the tube (7) is completely bent, and then remove the tube (7) from the tube clamping mechanism.

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