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CN-224208955-U - Lubricating oil mist supply device of pipe bending machine

CN224208955UCN 224208955 UCN224208955 UCN 224208955UCN-224208955-U

Abstract

The utility model relates to the technical field of pipe bending machines, in particular to a lubricating oil mist supply device of a pipe bending machine, which comprises a sleeve with an inner cavity and an opening at one end, wherein the side wall of the sleeve is provided with an air outlet hole and an air inlet hole which are communicated with the inner cavity; the air inlet and outlet device comprises an air outlet hole, a spray pipe communicated with the air outlet hole, a connecting piece which is in threaded connection with the opening and faces the inner cavity to form a connector, and an oil supply assembly communicated with the connector. According to the utility model, the fixed limiting piece is sleeved on the surface of the oil conveying needle, so that the limiting piece can be abutted against the connector after the oil conveying needle is screwed into the connector by threads, and can be abutted with the blocking piece fixed in the inner cavity after the oil conveying needle passes through the inner cavity and the air outlet hole and stretches into the spray pipe by using the connecting piece, so that the limiting piece is clamped between the blocking piece and the connector, the axial positioning of the oil conveying needle is realized, and the axial movement of the oil conveying needle caused by loosening of threaded connection is prevented.

Inventors

  • HU BINGBIN

Assignees

  • 苏州赛驰机械设备制造有限公司

Dates

Publication Date
20260508
Application Date
20250523

Claims (9)

  1. 1. A lubrication mist supply device for a pipe bending machine, comprising: A sleeve (1) which is provided with an inner cavity (2) and is provided with an opening at one end, and the side wall of the sleeve (1) is provided with an air outlet hole (3) and an air inlet hole (7) which are communicated with the inner cavity (2); a spray pipe (5) communicated with the air outlet hole (3); the connecting piece (11) is in threaded connection with the opening and faces the inner cavity (2) to form a connector (13); An oil supply assembly communicated with the connector (13); An air supply assembly communicating with the air inlet hole (7); One end of the oil conveying needle (15) is in threaded connection with the connector (13), and the other end sequentially passes through the inner cavity (2) and the air outlet hole (3) and stretches into the spray pipe (5); characterized by further comprising: a limiting piece (19) sleeved outside the oil conveying needle (15); The blocking piece (17) is arranged in the inner cavity (2) and is positioned between the air outlet hole (3) and the connector (13), a through hole in clearance fit with the oil conveying needle (15) is formed in the blocking piece (17), and the limiting piece (19) is clamped between the blocking piece (17) and the connector (13) to realize axial positioning.
  2. 2. The lubricating oil mist supply device of the pipe bending machine according to claim 1, characterized in that the outer surface of the spray pipe (5) is provided with a first external thread (6), the first external thread (6) is matched with a first thread groove (4) formed at one end of the sleeve (1), and the first thread groove (4) is communicated with the air outlet hole (3).
  3. 3. The lubricating oil mist supply device of the pipe bending machine according to claim 1, characterized in that a second external thread (12) is provided on a part of the circumferential surface of the connecting piece (11), the second external thread (12) being fitted with a second thread groove provided on the inner wall of the opening.
  4. 4. The lubricating oil mist supply device of the pipe bending machine according to claim 1, characterized in that the oil delivery needle (15) is provided with a third external thread (16) on the outer circumference of one end thereof, and the third external thread (16) is matched with a third thread groove (14) formed in the connecting head (13).
  5. 5. The lubricating oil mist supply device of the pipe bending machine according to claim 1, characterized in that the limiting piece (19) is an annular piece, and the blocking piece (17) is provided with a first caulking groove (18) which is matched with the shape of the limiting piece (19).
  6. 6. The lubricating oil mist supply device of the pipe bending machine according to claim 5, characterized in that the blocking piece (17) is an annular plate piece which is matched with the cross section shape of the inner cavity (2), a second caulking groove (21) is formed in the edge of the blocking piece (17), and a first sealing ring (22) is sleeved in the second caulking groove (21).
  7. 7. The lubricating oil mist supply device of the pipe bending machine according to claim 1, characterized in that a baffle plate (20) is fixedly arranged on the inner wall of the inner cavity (2), and the baffle plate (20) is used for clamping a blocking piece (17) in cooperation with the connector (13).
  8. 8. A lubricating oil mist supply device for a pipe bending machine according to claim 1, characterized in that the air supply assembly comprises a first joint (8) in communication with the air inlet hole (7), the first joint (8) being provided with a regulating valve (9) and an air pipe (10), the air pipe (10) being in communication with the air reservoir.
  9. 9. The lubricating oil mist supply device of the pipe bending machine according to claim 1, characterized in that the oil supply assembly comprises a second joint (23) with one end connected with the connecting piece (11), the other end of the second joint (23) is connected with an oil pipe (24), and the oil pipe (24) is communicated with the oil storage tank.

Description

Lubricating oil mist supply device of pipe bending machine Technical Field The utility model relates to the technical field of pipe bending machines, in particular to a lubricating oil mist supply device of a pipe bending machine. Background When the pipe bender processes a metal pipe, great friction can be generated between a die and the pipe, abrasion of the die and the pipe can be caused, the quality of a product is affected, and the machine can be damaged, so that lubrication of an oil mist supply device is required. Through searching, the Chinese patent with the issued publication number of CN215902587U discloses a lubricating oil mist supply device of a pipe bending machine and the pipe bending machine, in the scheme, an oil pipe and a long needle are in threaded connection to replace interference fit, so that the problem that the oil pipe is propped against a core pipe and the end face of the core pipe is blocked due to loose connection of the long needle and the oil pipe is avoided, meanwhile, the oil pipe and the air pipe are designed in different coaxial modes, gas and an oil body are respectively input into the core pipe from different inlets, and the problem that the oil pipe is blocked by the end face of the core pipe due to concentric arrangement of the air pipe and the oil pipe and insufficient gas is input is avoided. In the above technical scheme, the oil pipe and the long needle (oil delivery needle) are in threaded connection instead of interference fit, and although connection looseness of the long needle and the oil pipe can be reduced, due to lack of axial locking between the long needle and the oil pipe, along with frequent use of the lubricating oil mist supply device, the threaded connection between the long needle and the oil pipe still can be loosened. Disclosure of utility model Therefore, the utility model aims to provide a lubricating oil mist supply device of a pipe bending machine, which aims to solve the technical problem that connection between an oil delivery needle and an oil pipe of the lubricating oil mist supply device of the existing pipe bending machine is easy to loosen. Based on the above object, the present utility model provides a lubricating oil mist supply device of a pipe bending machine, comprising: A sleeve with an inner cavity and an opening at one end, the side wall of the sleeve is provided with a communication an air outlet hole and an air inlet hole of the inner cavity; A spray pipe communicated with the air outlet hole; the connecting piece is in threaded connection with the opening and forms a connector towards the inner cavity; an oil supply assembly communicated with the connector; The air supply assembly is communicated with the air inlet hole; One end of the oil conveying needle is in threaded connection with the connector, and the other end of the oil conveying needle sequentially penetrates through the inner cavity and the air outlet hole and stretches into the spray pipe; A limiting piece sleeved outside the oil conveying needle; The blocking piece is arranged in the inner cavity and is positioned between the air outlet and the connector, a through hole which is in clearance fit with the oil conveying needle is formed in the blocking piece, and the limiting piece is clamped between the blocking piece and the connector to realize axial positioning. As a preferable technical scheme of the utility model, the outer surface of the spray pipe is provided with a first external thread, the first external thread is matched with a first thread groove formed in one end of the sleeve, and the first thread groove is communicated with the air outlet hole. As a preferable technical scheme of the utility model, a part of the circumferential surface of the connecting piece is provided with a second external thread, and the second external thread is matched with a second thread groove arranged on the inner wall of the opening. As a preferable technical scheme of the utility model, the oil delivery needle is provided with a third external thread on the outer circumferential surface of one end of the oil delivery needle, and the third external thread is matched with a third thread groove formed in the connector. As a preferable technical scheme of the utility model, the limiting piece is an annular piece, and the blocking piece is provided with a first caulking groove which is matched with the limiting piece in shape. As a preferable technical scheme of the utility model, the blocking piece is an annular plate fitting with the cross section shape of the inner cavity, a second caulking groove is formed at the edge of the blocking piece, and a first sealing ring is sleeved in the second caulking groove. As the preferable technical scheme of the utility model, the baffle is fixedly arranged on the inner wall of the inner cavity and is used for being matched with the connector to clamp the blocking piece. As a preferable technical scheme of the utility model, the air