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CN-224222429-U - Pipe bar rolling machine

CN224222429UCN 224222429 UCN224222429 UCN 224222429UCN-224222429-U

Abstract

The utility model provides a pipe rib rolling machine which comprises a frame, a main shaft, steel balls, an inner shaft, a pushing device and a driving device, wherein the main shaft is rotatably arranged on the frame, a central hole is formed in the main shaft and forms a sleeve hole, one or more groups of ball hole groups are arranged on the side wall of the main shaft, each ball hole group comprises a plurality of steel ball holes which are communicated with the sleeve hole and are circumferentially and uniformly distributed, the steel balls are arranged in the steel ball holes and can realize inward or outward radial movement, the inner shaft is sleeved in the sleeve hole and can realize axial movement, a guide surface is arranged on the side wall of the inner shaft, the pushing device is connected with the inner shaft and used for driving the inner shaft to axially move, and the driving device is connected with the main shaft and used for driving the main shaft to radially rotate. The pipe rib rolling machine has the advantages of compact structure, small volume, low manufacturing cost, stable operation, good rib rolling effect and wide application range.

Inventors

  • Jiang Hangtao

Assignees

  • 宁波舜江汽车部件制造有限公司

Dates

Publication Date
20260512
Application Date
20250418

Claims (10)

  1. 1. A pipe rib rolling machine, comprising: a frame as a mounting carrier; The main shaft is rotationally arranged on the frame and is used for sleeving a pipe to be processed, a central hole is formed in the main shaft, sleeve holes are formed in the main shaft, one or more groups of ball hole groups are arranged on the side wall of the main shaft, and each ball hole group comprises a plurality of steel ball holes which are communicated with the sleeve holes and are uniformly distributed in the circumferential direction; the steel ball is arranged in the steel ball hole and can realize inward or outward radial movement; The inner shaft is sleeved in the sleeve hole and can axially move, and the side wall of the inner shaft is provided with a guide surface which is used for contacting with the steel ball and pushing the steel ball to move outwards so as to enable the steel ball to protrude out of the surface of the main shaft; The pushing device is connected with the inner shaft and used for driving the inner shaft to axially move; and the driving device is connected with the main shaft and used for driving the main shaft to radially rotate.
  2. 2. The pipe rib rolling machine according to claim 1, wherein the number of the steel ball holes on the same radial surface is 3-6.
  3. 3. The pipe rib rolling machine of claim 1, wherein the steel ball hole is a conical hole with a large inner part and a small outer part.
  4. 4. The pipe rib rolling machine of claim 1, wherein a retainer ring for limiting the moving travel of the steel ball is arranged on the inner wall of the outer side of the steel ball hole.
  5. 5. The tube beading machine of claim 1, characterized in that the side wall of the inner shaft is provided with a raised guide portion having a first inclined guide surface and a second guide surface parallel to the axis of the inner shaft.
  6. 6. The pipe rib rolling machine according to claim 1, wherein the inner wall of the sleeve hole is provided with a plurality of strip-shaped grooves along the length direction, the strip-shaped grooves are uniformly distributed in the circumferential direction, the side wall of the inner shaft is provided with strip-shaped protrusions corresponding to the strip-shaped grooves, and the guide surface is arranged on the strip-shaped protrusions.
  7. 7. The pipe rib rolling machine according to claim 1, further comprising a shaft sleeve rotatably mounted on the frame, wherein a gear ring is arranged on the side wall of the shaft sleeve, a gear or a rack meshed with the gear ring to drive the shaft sleeve to rotate is arranged at the output end of the driving device, the main shaft is coaxially fixed at the end part of the shaft sleeve, a pull rod coaxial with the inner shaft is sleeved in the shaft sleeve, the head part of the pull rod is rotatably connected with the inner shaft and can realize relative rotation, and the output end of the pushing device is connected with the tail part of the pull rod and is used for driving the pull rod to axially move.
  8. 8. The pipe rib rolling machine of claim 7, wherein the frame is hinged with a lever, the output end of the pushing device is connected with the head of the lever, and the tail of the lever is hinged with the tail of the pull rod through a connecting rod.
  9. 9. The pipe rib rolling machine of claim 7, wherein an adapter is arranged between the pull rod and the inner shaft, the adapter is rotatably arranged at the head part of the pull rod, and the end part of the inner shaft is in threaded connection with the adapter.
  10. 10. The pipe rib rolling machine of claim 1, wherein the driving device is a rack transmission oil cylinder, and the pushing device is an air cylinder or an oil cylinder.

Description

Pipe bar rolling machine Technical Field The utility model relates to pipe processing equipment, in particular to a pipe rib rolling machine. Background The pipe rib rolling machine is key equipment in the field of pipe machining, and has the main function of machining continuous annular, spiral or special-shaped reinforcing ribs (rolling ribs) on the surface of a pipe through a mechanical rolling process so as to improve the mechanical property, the functionality and the applicability of the pipe. The existing pipe rib forming mode comprises the steps of selecting a rotating wheel and a core mould according to the required size, enabling the core mould to be in a circular ring shape, enabling the core mould to be embedded into a groove formed in the rotating wheel, enabling the rotating wheel to be arranged beside the core mould, enabling the core mould to be arranged on a machine tool rotating shaft, enabling a steel pipe to be sleeved on the core mould, horizontally moving the rotating wheel to clamp the steel pipe, enabling the machine tool core mould to rotate at a uniform speed, enabling the rotating wheel to uniformly feed, and enabling a pipe orifice to finish rib expansion forming. The existing pipe forming machine is complex in structure, large in size and high in manufacturing cost. Disclosure of Invention The utility model aims to solve the technical problem of providing a pipe rib rolling machine which is compact in structure, small in size and good in use effect. The utility model provides a pipe rib rolling machine, which comprises: a frame 1 as a mounting carrier; The main shaft 2 is rotatably arranged on the frame 1 and is used for sleeving a pipe 10 to be processed, a central hole is formed in the main shaft 2, a sleeve hole is formed in the main shaft 2, one or more groups of ball hole groups are arranged on the side wall of the main shaft 2, and each ball hole group comprises a plurality of steel ball holes 210 which are communicated with the sleeve hole and are uniformly distributed in the circumferential direction; A steel ball 23 disposed in the steel ball hole 210 and capable of radial inward or outward movement; The inner shaft 5 is sleeved in the sleeve hole and can axially move, and the side wall of the inner shaft 5 is provided with a guide surface which is used for contacting with the steel ball 23 and pushing the steel ball 23 to move outwards so as to enable the steel ball to protrude out of the surface of the main shaft 2; A pushing device 9 connected with the inner shaft 5 and used for driving the inner shaft 5 to axially move; and the driving device 4 is connected with the main shaft 2 and is used for driving the main shaft 2 to radially rotate. Further, the number of the steel ball holes 210 on the same radial surface is 3-6. Further, the steel ball hole 210 is a tapered hole with a large inside and a small outside. Further, a retainer ring for limiting the movement travel of the steel ball 23 is provided on the outer inner wall of the steel ball hole 210. Further, the side wall of the inner shaft 5 is provided with a raised guide portion 51 having a first inclined guide surface 51a and a second guide surface parallel to the axis of the inner shaft. Further, the inner wall of the sleeve hole is provided with a plurality of strip-shaped grooves 211 along the length direction, the strip-shaped grooves are uniformly distributed circumferentially, the side wall of the inner shaft 5 is provided with strip-shaped protrusions 52 corresponding to the strip-shaped grooves 211, and the guide surface is arranged on the strip-shaped protrusions 52. Further, the device also comprises a shaft sleeve 3, the shaft sleeve 3 is rotatably arranged on the frame 1, a gear ring 31 is arranged on the side wall of the shaft sleeve 3, a gear or a rack 41 meshed with the gear ring 31 to drive the shaft sleeve 3 to rotate is arranged at the output end of the driving device 4, the main shaft 2 is coaxially fixed at the end part of the shaft sleeve 3, a pull rod coaxial with the inner shaft 5 is sleeved in the shaft sleeve 3, the head part of the pull rod is rotatably connected with the inner shaft 5 and can realize relative rotation, and the output end of the pushing device 9 is connected with the tail part of the pull rod and is used for driving the pull rod to axially move. Further, the frame 1 is hinged with a lever 91, the output end of the pushing device 9 is connected with the head of the lever 91, and the tail of the lever 91 is hinged with the tail of the pull rod through a connecting rod 82. Further, an adapter 6 is arranged between the pull rod and the inner shaft, the adapter 6 is rotatably arranged at the head part of the pull rod, and the end part of the inner shaft is in threaded connection with the adapter. Further, the driving device is a rack transmission oil cylinder, and the pushing device is an air cylinder or an oil cylinder. The pipe rib rolling machine is provided with an inner