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CN-116274542-B - Pipe bending machine and method for operating the same

CN116274542BCN 116274542 BCN116274542 BCN 116274542BCN-116274542-B

Abstract

The present disclosure relates to a pipe bender and a method for operating the same. The pipe bender comprises a shell, a bending assembly, a clamping assembly and a pipe fitting, wherein the bending assembly is rotatably connected to the shell and driven by a driving part to rotate relative to the shell, the bending assembly comprises a forming disc formed with a first arc-shaped containing channel, the clamping assembly is fixed to the shell and comprises a sliding block formed with a second arc-shaped containing channel, the pipe fitting is clamped between the first arc-shaped containing channel and the second arc-shaped containing channel, the pipe bender works in an automatic operation mode or a manual operation mode, the bending assembly is provided with a triggering part, at least one of the clamping assembly and the shell is provided with a detecting part, and in the automatic operation mode, the detecting part is triggered by the triggering part to stop driving the driving part. The pipe bending machine disclosed by the invention has the advantages of simple structure and lighter weight, is convenient for a user to operate and use, can also shorten the operation time of the pipe bending process, and improves the working efficiency of bending pipe fittings.

Inventors

  • ZHOU QI
  • WU DUAN
  • WU KUO
  • FANG YIBIN

Assignees

  • 艾默生精密工具技术(上海)有限公司

Dates

Publication Date
20260505
Application Date
20230224

Claims (20)

  1. 1. A pipe bender (1, 1a,1b,1 c), comprising: A housing (10, 10A, 10B) comprising a drive portion and a button (16, 18) controlling the drive portion; A bending assembly (20, 20 a) rotatably connected to the housing and driven by the drive to rotate relative to the housing, the bending assembly comprising a profiled disc (28) formed with a first arcuate receiving channel (282); a clamping assembly (30,30A) secured to the housing and including a slider (34) formed with a second arcuate receiving channel (342) with which the first arcuate receiving channel is in a form-fit and between which a tubular (T) is clamped, Characterized in that the pipe bender is capable of operating in an automatic mode of operation or a manual mode of operation, the bending assembly is provided with a trigger portion (25,224), at least one of the clamping assembly and the housing is provided with a detection portion (M1, M1A, M2A) configured to be triggered by the trigger portion to stop driving of the driving portion, and The bending assembly further comprises a forming disc seat (24) and an adjusting wheel (26), the adjusting wheel (26) being arranged between the forming disc seat (24) and the forming disc (28), the adjusting wheel (26) being rotatably connected to the forming disc seat (24) and the adjusting wheel (26) comprising the triggering portion.
  2. 2. The pipe bending machine according to claim 1, wherein, The driving part comprises a motor and a driving gear (12), the driving gear rotates under the driving of the motor, The bending assembly further includes a driven gear (22) that meshes with the drive gear, and the driven gear (22) has a radius that is greater than the radius of the drive gear (12).
  3. 3. The pipe bending machine according to claim 2, wherein, The driven gear (22) is formed in a fan shape and has a first edge tooth (220) at a first end portion in a circumferential direction and a second edge tooth (222) at a second end portion in a circumferential direction, the driven gear (22) rotates to an extreme position when the first edge tooth or the second edge tooth is meshed with the drive gear, The driven gear (22) is rotatably connected to a mounting plate (15) of the housing (10), the driven gear is provided with an elastic protrusion (224) at a side close to the mounting plate (15), the elastic protrusion (224) contacts with an edge of the mounting plate (15) and is elastically deformed to restrict the driven gear from continuing to rotate in the first direction when the driven gear rotates in the first direction to the limit position, and the elastic protrusion (224) returns to its original shape and engages the driven gear with the driving gear to rotate in the second direction when the driving portion drives the driven gear to rotate in a second direction opposite to the first direction.
  4. 4. The pipe bending machine according to claim 3, wherein, The forming disc seat (24) is arranged between the driven gear (22) and the adjusting wheel (26), The forming tray (24) is fixed to the driven gear (22), and the forming tray is fixed to the forming tray.
  5. 5. The pipe bending machine according to claim 4, wherein, The profiled disc seat (24) comprising a body (240) and a projection (242) extending from the body, the body having a plurality of grooves arranged thereon in a circumferential direction at intervals, the adjustment wheel (26) receiving a ball projecting towards the body (240) of the profiled disc seat, the adjustment wheel being fixed relative to the profiled disc seat when the ball is engaged to one of the plurality of grooves, the adjustment wheel rotating relative to the profiled disc seat when the ball is moved from one of the plurality of grooves to the other; The protrusion (242) of the molding disc seat corresponds in shape to and engages into the through hole (280) of the molding disc, thereby fixing the molding disc to the molding disc seat.
  6. 6. The pipe bending machine according to claim 5, wherein, The triggering part (25) is arranged in a hollow part (263) of the annular body (262) of the adjusting wheel, and is configured to be switchable between an automatic operation mode position (A) in which the triggering part (25) can trigger the detection part (M1) and a manual operation mode position (M) in which the triggering part (25) does not trigger the detection part (M1).
  7. 7. The pipe bending machine according to claim 6, wherein, After the detection part is triggered by the triggering part to stop driving the driving part, the pipe bending machine is automatically switched from the automatic operation mode to the manual operation mode.
  8. 8. The pipe bender according to claim 7, wherein, The trigger part (25) includes an operation part (250), a compression spring (252), a trigger (254), a torsion spring (256), a fixing block (258), and first and second connection pins (251, 253), the operation part (250) includes a knob (270) and a cam (272) including a notch (274) in a short axis direction thereof, the operation part (250) and the trigger (254) are connected to the ring-shaped body by the first and second connection pins (251, 253) respectively extending therethrough and are rotatable around the first and second connection pins (251, 253) respectively, In the automatic operating mode position (A), a first end (255) of the trigger is engaged with the recess (274), a second end (257) of the trigger protrudes radially outwardly outside the annular body (262), in the manual operating mode position (M), the first end (255) of the trigger is disengaged from the recess (274), the cam (272) returns to a position in which its long axis end abuts the first end (255) of the trigger under the action of the torsion spring, and the second end of the trigger is located inside the annular body against the action of the compression spring.
  9. 9. The pipe bender according to claim 8, wherein, The clamping assembly (30) further comprises a slider base (32) fixed to the housing and a mounting pin (36), the detection portion (M1) being fixed to the slider base (32) and formed as a micro switch.
  10. 10. The pipe bending machine according to claim 5, wherein, The triggering portion comprises a first triggering portion formed as a protrusion protruding radially outwards from an annular body (262 a,262 c) of the adjustment wheel.
  11. 11. The pipe bender according to claim 10, wherein, The clamping assembly (30A) further comprises a slider base (32) fixed to the housing (10A) and a mounting pin (36), the detection portion comprising a first detection portion (M1A) rotatably connected to the slider base.
  12. 12. The pipe bender according to claim 11, wherein, The first detection portion (M1A) is configured to be switchable between an automatic operation mode position, in which it is close to the annular body (262A) of the regulating wheel and the first triggering portion (264A) is able to selectively trigger the first detection portion (M1A), and a manual operation mode position, in which it is far from the annular body (262A) of the regulating wheel and the first triggering portion is unable to trigger the first detection portion, and The first detection portion includes a sensing portion and a toggle handle connected to the sensing portion.
  13. 13. The pipe bender according to claim 12, wherein, The triggering portion further includes a second triggering portion constituted by the elastic protruding portion (224), and the detecting portion further includes a second detecting portion (M2A) fixed to a mounting plate (15A) of the housing.
  14. 14. The pipe bender according to claim 12, wherein, The pipe bending machine further comprises a main control module, wherein the main control module is configured to detect a current signal of the driving part so as to judge that the driving part works in a forward rotation mode or a reverse rotation mode.
  15. 15. The pipe bender according to claim 12, wherein, The circumferential length of the protrusion is 1/12 to 1/4 of the circumferential length of the annular body (262C).
  16. 16. A pipe bender (1, 1a,1b,1 c), comprising: A housing (10, 10A, 10B) comprising a drive portion and a button (16, 18) controlling the drive portion; A bending assembly (20, 20 a) rotatably connected to the housing and driven by the drive to rotate relative to the housing, the bending assembly comprising a profiled disc (28) formed with a first arcuate receiving channel (282); a clamping assembly (30,30A) secured to the housing and including a slider (34) formed with a second arcuate receiving channel (342) with which the first arcuate receiving channel is in a form-fit and between which a tubular (T) is clamped, Characterized in that the pipe bender is capable of operating in an automatic mode of operation or a manual mode of operation, the bending assembly is provided with a trigger portion (25,224), at least one of the clamping assembly and the housing is provided with a detection portion (M1, M1A, M2A) configured to be triggered by the trigger portion to stop driving of the driving portion in the automatic mode of operation, The bender is configured to be switchable between the automatic mode position and the manual mode position, In the automatic operation mode position, the triggering portion is capable of triggering the detecting portion (M1), and in the manual operation mode position, the triggering portion does not trigger the detecting portion (M1), and After the detection portion is triggered by the trigger portion to stop driving the driving portion, the pipe bender is automatically switched from the automatic operation mode position to the manual operation mode position.
  17. 17. The pipe bender according to claim 16, wherein, The driving part comprises a motor and a driving gear (12), the driving gear rotates under the driving of the motor, The bending assembly further includes a driven gear (22) that meshes with the drive gear, and the driven gear (22) has a radius that is greater than the radius of the drive gear (12).
  18. 18. The pipe bender according to claim 17, wherein, The driven gear (22) is formed in a fan shape and has a first edge tooth (220) at a first end portion in a circumferential direction and a second edge tooth (222) at a second end portion in a circumferential direction, the driven gear (22) rotates to an extreme position when the first edge tooth or the second edge tooth is meshed with the drive gear, The driven gear (22) is rotatably connected to a mounting plate (15) of the housing (10), the driven gear is provided with an elastic protrusion (224) at a side close to the mounting plate (15), the elastic protrusion (224) contacts with an edge of the mounting plate (15) and is elastically deformed to restrict the driven gear from continuing to rotate in the first direction when the driven gear rotates in the first direction to the limit position, and the elastic protrusion (224) returns to its original shape and engages the driven gear with the driving gear to rotate in the second direction when the driving portion drives the driven gear to rotate in a second direction opposite to the first direction.
  19. 19. The pipe bender according to claim 18, wherein, The bending assembly further comprises a forming disc seat (24) and an adjusting wheel (26), the forming disc seat (24) is arranged between the driven gear (22) and the adjusting wheel (26), and the adjusting wheel (26) is arranged between the forming disc seat (24) and the forming disc (28), The forming disc seat (24) is fixed to the driven gear (22), the regulating wheel (26) is rotatably connected to the forming disc seat (24), and the forming disc is fixed to the forming disc seat.
  20. 20. The pipe bender according to claim 19, wherein, The profiled disc seat (24) comprising a body (240) and a projection (242) extending from the body, the body having a plurality of grooves arranged thereon in a circumferential direction at intervals, the adjustment wheel (26) receiving a ball projecting towards the body (240) of the profiled disc seat, the adjustment wheel being fixed relative to the profiled disc seat when the ball is engaged to one of the plurality of grooves, the adjustment wheel rotating relative to the profiled disc seat when the ball is moved from one of the plurality of grooves to the other; The protrusion (242) of the molding disc seat corresponds in shape to and engages into the through hole (280) of the molding disc, thereby fixing the molding disc to the molding disc seat.

Description

Pipe bending machine and method for operating the same Technical Field The present disclosure relates to power tools, and in particular, to a pipe bender and a method for operating the same. Background The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. Industrial tubing is typically produced and sold in the form of straight long tubes. However, in actual construction processes, such as installing water pipes, it is often necessary to bend the pipe at a desired angle according to the actual situation, such bending being accomplished by a pipe bender. Such a tube bender can bend the tube to a desired angle without collapsing or creasing the tube wall. Most existing tube bending machines typically employ a conventional worm-and-gear drive, which results in a large overall system weight. In addition, existing pipe bending machines generally require a user to frequently view the bending degree of the pipe while operating the pipe bending machine, and often may require repeated bending operations to obtain a desired bending angle of the pipe, which results in complicated operation and low working efficiency of the pipe bending machine. Although some pipe bending machines with automatic stopping function have been developed recently, these pipe bending machines still have problems of complex structure and difficult operation. Disclosure of Invention It is an object of the present disclosure to provide a simple and lightweight pipe bender. It is another object of the present disclosure to provide a pipe bender that is lightweight to operate and convenient to use. It is a further object of the present disclosure to provide a method for operating a pipe bender that is easy to operate and that increases the efficiency of work. One aspect of the present disclosure provides a pipe bender comprising a housing including a drive portion and a button controlling the drive portion, a bending assembly rotatably connected to the housing and driven by the drive portion to rotate relative to the clamping assembly, the bending assembly including a forming plate formed with a first arcuate receiving channel, a clamping assembly secured to the housing and including a slider formed with a second arcuate receiving channel, the first arcuate receiving channel being in a form-fit with the second arcuate receiving channel and a pipe being clamped between the first arcuate receiving channel and the second arcuate receiving channel, characterized in that the pipe bender is operable in an automatic or manual operating mode, the bending assembly being provided with a trigger portion, at least one of the clamping assembly and the housing being provided with a detection portion, the detection portion being configured to be triggered by the trigger portion to stop the drive portion in the automatic operating mode. In some embodiments, the drive portion includes a motor and a drive gear that rotates under the drive of the motor, the bending assembly further includes a driven gear that meshes with the drive gear, and the radius of the driven gear is greater than the radius of the drive gear. In some embodiments, the driven gear is formed in a fan shape and has a first edge tooth at a first end portion in a circumferential direction and a second edge tooth at a second end portion in a circumferential direction, the driven gear rotates to an extreme position when the first edge tooth or the second edge tooth is engaged with the driving gear, the driven gear is rotatably connected to a mounting plate of the housing, the driven gear is provided with an elastic protrusion on a side near the mounting plate, and the elastic protrusion contacts with an edge of the mounting plate and is elastically deformed to restrict continued rotation of the driven gear in the first direction when the driven gear rotates to the extreme position in a first direction, and the elastic protrusion is restored to its original shape and engages the driven gear with the driving gear to rotate in the second direction when the driving portion drives the driven gear to rotate in a second direction opposite to the first direction. In some embodiments, the bending assembly further comprises a forming disc seat disposed between the driven gear and the adjusting wheel, and the adjusting wheel is disposed between the forming disc seat and the forming disc, the forming disc seat is fixed to the driven gear, the adjusting wheel is rotatably connected to the forming disc seat, and the forming disc is fixed to the forming disc seat. In some embodiments, the forming tray includes a body and a protrusion extending from the body, the body having a plurality of grooves arranged thereon in a circumferential direction at intervals, the adjustment wheel receiving a ball protruding toward the body of the forming tray, the adjustment wheel being fixed relative to the forming tray when the ball is engaged to one