Pipe bending apparatus for pipe with heat dissipation fins

Abstract

The application discloses a pipe bending equipment with heat dissipation fin pipe material, which comprises a machine base, a feeding trolley arranged on the machine base, a pipe bending head assembly arranged at the head of the machine base, a servo vertical material supporting mechanism and a servo horizontal clamping mechanism arranged on the machine base and close to the pipe bending head assembly; the pipe bending head assembly comprises a head base connected with the end of the machine base, a pipe bending spindle arranged on the head base, a driving power device arranged on the head base and used for driving the pipe bending spindle to rotate, a lower wheel die arranged on the upper end of the pipe bending spindle, a vertically arranged die core shaft movably arranged in the pipe bending spindle, an upper wheel die arranged on the die core shaft, a clamping oil cylinder arranged at the lower part of the head base, and a piston rod end of the clamping oil cylinder connected with one end of the die core shaft penetrating out of the pipe bending spindle.

Description

Technical Field

[0001] This invention relates to pipe bending machines, and more particularly to a pipe bending processing equipment for pipes with heat dissipation fins. Background Technology

[0002] Tubes with heat dissipation fins have at least two sets of circumferentially arranged heat dissipation fins spaced apart, and require multiple bending processes. Conventional tube bending machines use left and right wheel dies to clamp the tube, and then drive the bending head to rotate to achieve the bending process. When using conventional tube bending machines for this type of tube processing, the influence of the heat dissipation fins prevents the machine from completing continuous feeding and bending operations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a pipe bending processing equipment for tubes with heat dissipation fins.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a pipe bending processing equipment for pipes with heat dissipation fins, including a machine base, a feeding trolley on the machine base, a pipe bending head assembly at the head of the machine base, and a servo vertical material support mechanism and a servo horizontal clamping mechanism on the machine base near the pipe bending head assembly. The pipe bending head assembly includes a head base connected to the end of the machine base, a pipe bending spindle on the head base, a main power device for driving the pipe bending spindle to rotate on the head base, a lower roller die on the upper end of the pipe bending spindle, a vertically arranged die mandrel movably passing through the pipe bending spindle, an upper roller die on the die mandrel, a clamping cylinder at the lower part of the head base, and one end of the die mandrel passing through the pipe bending spindle connected to the piston rod end of the clamping cylinder. The lower die includes a lower die base, a clockwise bending lower clamping part and an arc-shaped lower bending die part disposed on the lower die base. The arc of the lower bending die part exceeds 190°. The clockwise bending lower clamping part is provided with a lower clamping groove for clamping the lower half of the pipe body. The upper die includes an upper die base, a clockwise bending upper clamping part disposed on the upper die base, and an arc-shaped upper bending die part that cooperates with the lower bending die part. The clockwise bending upper clamping part is provided with an upper clamping groove that cooperates with the lower clamping groove to clamp the pipe body.

[0005] As a preferred embodiment, the machine base is provided with a horizontal slide rail at its end, the pipe bending head assembly is mounted on the horizontal slide rail, and the machine base is provided with a horizontal switching power device for driving the pipe bending head assembly to move; the lower die base of the lower wheel die is provided with a counterclockwise bending lower clamping part at the other end of the arc-shaped lower bending wheel die part, and the counterclockwise bending lower clamping part is also provided with a lower clamping groove for clamping the lower half of the pipe body; the upper die base of the upper wheel die is provided with a counterclockwise bending upper clamping part, and the counterclockwise bending upper clamping part is also provided with an upper clamping groove that cooperates with the corresponding lower clamping groove to clamp the pipe body.

[0006] As a preferred embodiment, the servo horizontal clamping mechanism includes a mounting base, a linear guide rail on the mounting base, two sliding seats on the linear guide rail, a drive screw on the mounting base, drive threads with opposite helical directions at both ends of the drive screw, a servo motor connected to the drive screw on the mounting base, and clamping rollers on the sliding seats, with the axle of the clamping rollers being vertically arranged.

[0007] As a preferred embodiment, the servo vertical material support mechanism includes a material support shaft arranged perpendicular to the pipe feeding direction and mounted on a machine base. A material support swing arm is provided at one end of the material support shaft that extends out of the machine base, a material support crank is provided in the middle of the material support shaft, and a material support roller is provided at the end of the material support crank. A material support servo motor is provided on one side of the machine base, and the output shaft end of the material support servo motor is connected to the screw sleeve of a ball screw mounted on the machine base via a coupling. The end of the material support swing arm away from the material support crank is connected to the screw of the ball screw.

[0008] As a preferred embodiment, the headstock is provided with a bending tube auxiliary pushing mechanism, which includes a slide plate seat mounted on the headstock, a linear guide rail mounted on the slide plate seat, an auxiliary pushing slide plate movably mounted on the linear guide rail, an auxiliary pushing motor mounted on the slide plate seat to drive the auxiliary pushing slide plate to slide, and a slide plate mold mounted on the auxiliary pushing slide plate.

[0009] As a preferred embodiment, the headstock is provided with a switching screw perpendicular to the pipe feeding direction and a switching motor for driving the switching screw to rotate. The movable block on the switching screw is connected to a switching seat slidably disposed on the headstock, and the switching seat is provided with the sliding plate seat.

[0010] As a preferred embodiment, the slide plate mold has a first side push groove on one side to push against the side of the pipe material being processed in a clockwise bend.

[0011] As a preferred embodiment, the other side of the slide plate mold is provided with a second side push groove that pushes against the side of the pipe material being processed in a counterclockwise bend.

[0012] As a preferred embodiment, the skateboard mold is provided with a clearance ramp below both the first and second side push grooves.

[0013] As a preferred embodiment, the headstock is provided with a free roller for supporting the tube on the discharge side of the main shaft.

[0014] The beneficial effects of this invention are: This pipe bending equipment adopts a brand-new upper and lower die structure, combined with a servo vertical material support mechanism and a servo horizontal clamping mechanism, thereby realizing automatic feeding and bending of pipes with heat dissipation fins, and the overall structure is extremely compact and the processing is highly efficient.

[0015] Because a lower die is provided at the upper end of the bending spindle, a vertically arranged die mandrel is movably inserted through the bending spindle, and an upper die is provided on the die mandrel. A clamping cylinder is provided at the lower part of the machine head seat. One end of the die mandrel that extends out of the bending spindle is connected to the piston rod end of the clamping cylinder. The lower die includes a lower die base and a clockwise bending lower clamping part and an arc-shaped lower bending die part provided on the lower die base. The arc of the lower bending die part exceeds 190°. The clockwise bending lower clamping part is provided with a lower clamping groove for clamping the lower half of the pipe body. The upper die includes an upper die base and a lower die mandrel provided on the lower die base. The upper die base has a clockwise bending clamping part and an arc-shaped upper bending wheel die part that mates with the lower bending wheel die part. The clockwise bending clamping part has an upper clamping groove that mates with the lower clamping groove to clamp the tube body. By using the upper wheel die that moves up and down in conjunction with the corresponding feeding device, the tube with heat dissipation fins can be bent. After the material is fed into place, the die mandrel drives the upper wheel die to move down, and the upper and lower clamping parts clamp the tube together. The main power device drives the lower wheel die and the upper wheel die to rotate to complete the tube bending process. The overall structure is simple and the processing is reliable.

[0016] Because the lower die base of the lower die has a counterclockwise bending lower clamping part at the other end of the arc-shaped lower bending die, and the counterclockwise bending lower clamping part also has a lower clamping groove for clamping the lower half of the pipe body, and the upper die base of the upper die has a counterclockwise bending upper clamping part, and the counterclockwise bending upper clamping part also has an upper clamping groove that cooperates with the corresponding lower clamping groove to clamp the pipe body, this pipe bending head can perform forward and reverse bending processing.

[0017] Because the headstock is equipped with a pipe bending auxiliary pushing mechanism, which includes a slide plate seat on the headstock, a linear guide rail on the slide plate seat, an auxiliary pushing slide plate movably mounted on the linear guide rail, an auxiliary pushing motor on the slide plate seat to drive the auxiliary pushing slide plate to slide, and a slide plate mold on the auxiliary pushing slide plate, the workpiece is formed more smoothly during pipe bending and the pipe is prevented from developing tensile cracks.

[0018] Because the sliding plate mold has avoidance slopes below the first and second side push grooves, it avoids interference with the pipe.

[0019] Since the headstock is equipped with a switching screw perpendicular to the pipe feeding direction and a switching motor that drives the switching screw to rotate, the movable block on the switching screw is connected to the switching seat that is slidably set on the headstock, and the switching seat is equipped with the sliding plate seat, the pipe bending auxiliary pushing mechanism can adapt to the operation of bending pipes left and right.

[0020] Because the headstock is equipped with a free roller that supports the pipe on the discharge side of the main shaft, the pipe can be supported during the feeding process, making the feeding more stable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this vertical pipe bending equipment.

[0022] Figure 2 This is a top view of the vertical pipe bending equipment.

[0023] Figure 3 This is a schematic diagram of the servo horizontal clamping mechanism in this vertical pipe bending device.

[0024] Figure 4 This is a schematic diagram of the servo horizontal clamping mechanism in this vertical pipe bending device from another angle.

[0025] Figure 5 This is a schematic diagram of the main structure of the pipe bending head assembly in this vertical pipe bending equipment.

[0026] Figure 6 This is a side view of the pipe bending head assembly in this vertical pipe bending equipment (the thick section of the pipe passes through the servo vertical material support mechanism).

[0027] Figure 7 This is a top view of the bending head assembly in this vertical pipe bending equipment.

[0028] Figure 8 This is a partially enlarged structural diagram of the pipe bending head assembly in this vertical pipe bending equipment.

[0029] Figure 9 This is a schematic diagram of the pipe bending head assembly in this vertical pipe bending equipment.

[0030] Figure 10 This is a schematic diagram of the pipe bending head assembly in this vertical pipe bending equipment.

[0031] Figure 11 This is a schematic diagram of the main structure of the vertical pipe bending equipment (the narrow section of the pipe passes through the servo vertical material support mechanism).

[0032] In the diagram: 1. Machine base; 2. Servo vertical material feeding mechanism; 3. Servo horizontal clamping mechanism; 4. Pipe bending head assembly; 5. Feeding trolley. 21 Material support crank, 22 Material support roller, 23 Material support swing arm, 24 Material support servo motor, 25 Coupling, 26 Ball screw; 31 Mounting base, 32 Linear guide rail, 33 Sliding seat, 34 Drive screw, 35 Servo motor, 36 Clamping roller; 41 Headstock, 42 ​​Bending spindle, 43 Transmission gear, 44 Drive gear, 45 Servo bending motor, 46 Reducer, 47 Lower die, 471 Lower die seat, 472 Clockwise bending lower clamping part, 473 Lower bending die, 474 Counterclockwise bending lower clamping part, 475 Inclined clearance area; 48 Locking nut, 49 Die mandrel, 410 Upper die, 4101 Upper die seat, 4102 Clockwise bending upper clamping part, 4103 Upper bending die, 4104 Counterclockwise bending upper clamping part; 411 Clamping cylinder; 412 Slide plate die, 413 Switching screw, 414 Switching motor, 415 Switching seat, 416 Slide plate seat, 417 Linear guide rail, 418 Auxiliary push slide plate, 419 Auxiliary push motor. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1-11 As shown, a pipe bending processing equipment with heat dissipation fins includes a base 1, a feeding trolley 5 on the base 1, a pipe bending head assembly 4 at the head of the base 1, and a servo vertical material support mechanism 2 and a servo horizontal clamping mechanism 3 on the base 1 near the pipe bending head assembly 4. The pipe bending head assembly 4 includes a headstock 41 connected to the end of the base 1. A pipe bending spindle 42 is mounted on the headstock 41, and a main power device for driving the pipe bending spindle 42 to rotate is also mounted on the headstock 41. The main power device includes a transmission gear 43 mounted on the pipe bending spindle, a drive gear 44 mounted on the headstock 41, and a servo pipe bending motor 45 mounted on the headstock 41. The output shaft of the servo pipe bending motor 45 is connected to a reducer 46, and the drive gear 44 is connected to the output shaft of the reducer 46.

[0035] The upper end of the bending spindle 42 is provided with a lower wheel mold 47, and a vertically arranged mold mandrel 49 is movably inserted through the bending spindle 42. An upper wheel mold 410 is provided on the mold mandrel 49. A clamping cylinder 411 is provided at the lower part of the machine head seat 41. One end of the mold mandrel 49 that passes through the bending spindle 42 is connected to the piston rod end of the clamping cylinder 411. The lower die 47 includes a lower die base 471, a clockwise bending lower clamping part 472 and an arc-shaped lower bending die 473 disposed on the lower die base 471. The arc of the lower bending die 473 exceeds 190°. The clockwise bending lower clamping part 472 is provided with a lower clamping groove for clamping the lower half of the pipe body. The upper die 410 includes an upper die base 4101, a clockwise bending upper clamping part 4102 disposed on the upper die base 4101 and an arc-shaped upper bending die 4103 that cooperates with the lower bending die 473. The clockwise bending upper clamping part 4102 is provided with an upper clamping groove that cooperates with the lower clamping groove to clamp the pipe body. The machine base 1 is provided with a horizontal slide rail at its end, and the pipe bending head assembly 4 is mounted on the horizontal slide rail. The machine base 1 is provided with a horizontal switching power device that drives the pipe bending head assembly 4 to move. The horizontal switching power device includes a horizontal switching screw 413 mounted on the end of the machine base 1, and a movable block on the horizontal switching screw 413 is connected to the head seat 41 of the pipe bending head assembly 4. The machine base 1 is provided with a servo switching motor 414 that drives the horizontal switching screw 413.

[0036] The lower die base 471 of the lower die 47 has a counterclockwise bending lower clamping part 474 at the other end of the arc-shaped lower bending die 473. The counterclockwise bending lower clamping part 474 also has a lower clamping groove for clamping the lower half of the pipe body. The upper die base 4101 of the upper die 410 has a counterclockwise bending upper clamping part 4104. The counterclockwise bending upper clamping part 4104 also has an upper clamping groove that cooperates with the corresponding lower clamping groove to clamp the pipe body.

[0037] The servo horizontal clamping mechanism 3 includes a mounting base 31, a linear guide rail 32 on the mounting base 31, two sliding seats 33 on the linear guide rail 32, a drive screw 34 on the mounting base 31, drive threads with opposite helical directions at both ends of the drive screw 34, a servo motor 35 connected to the drive screw 34 on the mounting base 31, and clamping rollers 36 on the sliding seats 33, with the wheel axle of the clamping rollers 36 being vertically arranged.

[0038] The servo vertical material feeding mechanism 2 includes a material feeding shaft arranged perpendicular to the pipe feeding direction on the base 1. A material feeding swing rod 23 is provided on one end of the material feeding shaft that extends out of the base 1. A material feeding crank 21 is provided in the middle of the material feeding shaft. A material feeding roller 22 is provided at the end of the material feeding crank 21. A material feeding servo motor 24 is provided on one side of the base 1. The output shaft end of the material feeding servo motor 24 is connected to the screw sleeve of the ball screw 26 provided on the base 1 through a coupling 25. The end of the material feeding swing rod 21 away from the material feeding crank 21 is connected to the screw of the ball screw 26.

[0039] The headstock 41 is provided with a pipe bending auxiliary pushing mechanism. The pipe bending auxiliary pushing mechanism includes a switching screw 413 arranged on the headstock 41 perpendicular to the pipe feeding direction and a switching motor 414 that drives the switching screw 413 to rotate. The movable block on the switching screw 413 is connected to a switching seat 415 slidably arranged on the headstock 41. The switching seat 415 is provided with a sliding plate seat 416.

[0040] A linear guide rail 417 is provided on the slide plate base 416, and an auxiliary push slide plate 418 is movably mounted on the linear guide rail 417. An auxiliary push motor 419 is provided on the slide plate base 416 to drive the auxiliary push slide plate 418 to slide. A slide plate mold 412 is provided on the auxiliary push slide plate 418. One side of the slide plate mold 412 has a first side push groove that pushes against the side of the pipe being bent clockwise. The other side of the slide plate mold 412 has a second side push groove that pushes against the side of the pipe being bent counterclockwise. The slide plate mold 412 has a relief slope below both the first and second side push grooves. A free roller supporting the pipe is provided on the headstock 41 on the main shaft discharge side.

[0041] Work process: Taking clockwise bending as an example, before starting the bending process, first adjust the machine head 41 to the working position and raise the upper die 410. Then adjust the auxiliary push slide 418 to the corresponding working position side.

[0042] During feeding, the servo vertical material support mechanism 2 automatically adjusts the vertical position of the material support roller 22 according to the outer diameter of the pipe, while the servo horizontal clamping mechanism 3 automatically adjusts the position of the two clamping rollers 36 according to the outer diameter of the pipe being passed, ensuring that the pipe is stably and reliably transported to the bend.

[0043] Next, the upper die 410 descends, and the clockwise bending upper clamping part of the upper die 410 and the clockwise bending lower clamping part of the lower die together clamp the pipe. Then, the sliding plate die 412 of the pipe bending auxiliary pushing mechanism is adjusted into place. Then the spindle rotates at the corresponding angle to complete the pipe bending process.

[0044] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A pipe bending processing equipment for tubes with heat dissipation fins, comprising a machine base, a feeding trolley mounted on the machine base, and a pipe bending head assembly mounted at the head of the machine base, characterized in that: The base is equipped with a servo vertical material support mechanism and a servo horizontal clamping mechanism near the pipe bending head assembly. The pipe bending head assembly includes a head base connected to the end of the machine base, a pipe bending spindle on the head base, a main power device for driving the pipe bending spindle to rotate on the head base, a lower roller die on the upper end of the pipe bending spindle, a vertically arranged die mandrel movably passing through the pipe bending spindle, an upper roller die on the die mandrel, a clamping cylinder at the lower part of the head base, and one end of the die mandrel passing through the pipe bending spindle connected to the piston rod end of the clamping cylinder. The lower die includes a lower die base, a clockwise bending lower clamping part and an arc-shaped lower bending die part disposed on the lower die base. The arc of the lower bending die part exceeds 190°. The clockwise bending lower clamping part is provided with a lower clamping groove for clamping the lower half of the pipe body. The upper die includes an upper die base, a clockwise bending upper clamping part disposed on the upper die base, and an arc-shaped upper bending die part that cooperates with the lower bending die part. The clockwise bending upper clamping part is provided with an upper clamping groove that cooperates with the lower clamping groove to clamp the pipe body.

2. The pipe bending equipment for heat dissipation finned tubes as described in claim 1, characterized in that: The machine base is provided with a horizontal slide rail at its end, and the pipe bending head assembly is mounted on the horizontal slide rail. The machine base is provided with a horizontal switching power device to drive the pipe bending head assembly to move. The lower die base of the lower wheel die is provided with a counterclockwise bending lower clamping part at the other end of the arc-shaped lower bending wheel die part. The counterclockwise bending lower clamping part is also provided with a lower clamping groove for clamping the lower half of the pipe body. The upper die base of the upper wheel die is provided with a counterclockwise bending upper clamping part. The counterclockwise bending upper clamping part is also provided with an upper clamping groove that cooperates with the corresponding lower clamping groove to clamp the pipe body.

3. The pipe bending equipment for heat dissipation finned tubes as described in claim 1, characterized in that: The servo horizontal clamping mechanism includes a mounting base, a linear guide rail on the mounting base, two sliding seats on the linear guide rail, a drive screw on the mounting base, drive threads with opposite helical directions at both ends of the drive screw, a servo motor connected to the drive screw on the mounting base, and clamping rollers on the sliding seats, with the wheel axle of the clamping rollers being vertically arranged.

4. The pipe bending equipment for heat dissipation finned tubes as described in claim 1, characterized in that: The servo vertical material support mechanism includes a material support shaft arranged perpendicular to the pipe feeding direction and mounted on the machine base. A material support swing arm is provided at one end of the material support shaft that extends out of the machine base. A material support crank is provided in the middle of the material support shaft, and a material support roller is provided at the end of the material support crank. A material support servo motor is provided on one side of the machine base. The output shaft end of the material support servo motor is connected to the screw sleeve of a ball screw mounted on the machine base via a coupling. The end of the material support swing arm away from the material support crank is connected to the screw of the ball screw.

5. The pipe bending equipment for heat dissipation finned tubes as described in claim 1, characterized in that: The machine head base is provided with a bending tube auxiliary pushing mechanism, which includes a slide plate seat set on the machine head base, a linear guide rail on the slide plate seat, an auxiliary pushing slide plate movably mounted on the linear guide rail, an auxiliary pushing motor on the slide plate seat to drive the auxiliary pushing slide plate to slide, and a slide plate mold on the auxiliary pushing slide plate.

6. The pipe bending processing equipment for finned tubes as described in claim 5, characterized in that: The headstock is provided with a switching screw perpendicular to the pipe feeding direction and a switching motor that drives the switching screw to rotate. The movable block on the switching screw is connected to the switching seat that is slidably set on the headstock, and the switching seat is provided with the sliding plate seat.

7. The pipe bending equipment for heat dissipation finned tubes as described in claim 6, characterized in that: The slide plate mold has a first side push groove on one side to push against the side of the pipe material being processed by clockwise bending.

8. The pipe bending equipment for heat dissipation finned tubes as described in claim 76, characterized in that: The other side of the sliding plate mold is provided with a second side push groove that pushes against the side of the pipe material being processed by counterclockwise bending.

9. The pipe bending equipment for heat dissipation finned tubes as described in claim 8, characterized in that: The skateboard mold is provided with a clearance ramp below the first and second side push grooves.

10. A pipe bending processing equipment for finned tubes as described in any one of claims 1-9, characterized in that: The headstock is equipped with free rollers that support the pipe on the main shaft discharge side.

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