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CN-121972555-A - Vertical hot spiral machine of air bag pipe

CN121972555ACN 121972555 ACN121972555 ACN 121972555ACN-121972555-A

Abstract

The invention relates to pipe fitting hot spinning equipment, in particular to an airbag pipe vertical hot spinning machine which comprises a clamping mechanism, a lower mandrel mechanism, an upper mandrel mechanism and a hot spinning mechanism, wherein the clamping mechanism clamps the lower end part of an airbag pipe which is vertically arranged and drives the airbag pipe to synchronously and automatically rotate, the lower mandrel mechanism is arranged right below the clamping mechanism and comprises a lower mandrel which is ejected from bottom to top, the upper mandrel mechanism is arranged right above the clamping mechanism and comprises an upper mandrel which falls from top to bottom, the mandrels which support the inside of the airbag pipe are arranged in a split mode to form an upper mandrel and a lower mandrel, the airbag pipe is internally supported by the cooperation of the upper mandrel and the lower mandrel, and simultaneously, the upper mandrel and the lower mandrel are respectively pulled out from top and bottom when pulled out, so that the rigid support and smooth pulling-out of the airbag pipe by the upper mandrel and the lower mandrel are realized.

Inventors

  • TIAN FEI
  • PANG WEIHUA
  • WANG CAILONG

Assignees

  • 长恩精机(长兴)有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (10)

  1. 1. An airbag tube vertical thermal spinning machine, comprising: the device comprises a clamping mechanism (1), a lower mandrel mechanism (2), an upper mandrel mechanism (3) and a hot spinning mechanism (4); the clamping mechanism (1) is arranged on the workbench (100), the clamping mechanism (1) is positioned between the lower mandrel mechanism (2) and the upper mandrel mechanism (3), and the clamping mechanism (1) clamps the lower end part of the airbag tube (10) which is vertically arranged and drives the airbag tube (10) to synchronously and automatically rotate; the lower mandrel mechanism (2) is arranged right below the clamping mechanism (1), the lower mandrel mechanism (2) comprises a lower mandrel (21) which is ejected from bottom to top, and the lower mandrel (21) passes through the clamping mechanism (1) and is inserted into the air bag tube (10); the upper mandrel mechanism (3) is arranged right above the clamping mechanism (1), the upper mandrel mechanism (3) comprises an upper mandrel (31) which falls downwards from top to bottom, the upper mandrel (31) and the lower mandrel (21) are coaxially arranged, and the upper mandrel (31) is inserted into the air bag tube (10); The hot spinning mechanism (4) is arranged on the annular direction of the air bag tube (10), the hot spinning mechanism (4) comprises an electric heating coil (41) and a hot pressing wheel set (42), the electric heating coil (41) heats the hot spinning part of the air bag tube (10), and the hot pressing wheel set (42) supports the air bag tube (10) when the lower mandrel (21) and the upper mandrel (31) penetrate into the air bag tube (10) for hot spinning treatment.
  2. 2. The airbag tube vertical type thermal spinning machine according to claim 1, wherein: The clamping mechanism (1) comprises a mounting sleeve (11), a hollow shaft (12), a transition mounting plate (13) and a three-jaw chuck (14); The mounting sleeve (11) is vertically mounted on the workbench (100); The hollow shaft (12) is coaxially arranged in the mounting sleeve (11) in a penetrating way, and the hollow shaft (12) and the mounting sleeve (11) are arranged in a rotating fit way through a bearing (15); The transition mounting plate (13) is mounted on the top of the hollow shaft (12), and the transition mounting plate (13) is connected with the hollow shaft (12) and the three-jaw chuck (14); the three-jaw chuck (14) is rotatably arranged along with the hollow shaft (12), and the three-jaw chuck (14) clamps and positions the vertical airbag tube (10).
  3. 3. An airbag tube vertical thermal spinning machine as claimed in claim 2, wherein: The lower end part of the hollow shaft (12) is connected with a driving module (16), and the driving module (16) drives the hollow shaft (12) to rotate around the self axial direction.
  4. 4. An airbag tube vertical thermal spinning machine as claimed in claim 2, wherein: The lower core shaft mechanism (2) comprises a mounting seat (22), an electric push rod (23), a connector (24) and an end face positioning block (25); The mounting seat (22) is connected with the mounting sleeve (11), and the lower end part of the hollow shaft (12) is positioned in the mounting seat (22); The electric push rod (23) is arranged below the mounting seat (22), and the electric push rod (23) is vertically pushed upwards; The connector (24) is arranged at the pushing end part of the electric push rod (23), and the connector (24) is connected with the electric push rod (23) and the lower core shaft (21); The end face positioning block (25) is arranged at the central position of the transition mounting plate (13), and the lower mandrel (21) is arranged on the end face positioning block (25) in a penetrating mode.
  5. 5. The airbag tube vertical type thermal spinning machine according to claim 1, wherein: The upper core shaft mechanism (3) comprises an electric pusher (32), a ram (33), a guide rail seat (34) and a slide rail module (35); the electric pusher (32) is hung right above the clamping mechanism (1); The ram (33) is arranged at the pushing end part of the electric pusher (32), and the upper mandrel (31) which faces downwards vertically is arranged on the ram (33); The guide rail seat (34) is arranged on the workbench (100) along the vertical direction, and the guide rail seat (34) is arranged in parallel with the upper mandrel (31); the sliding rail module (35) is arranged on the guide rail seat (34), and the sliding rail module (35) is arranged between the ram (33) and the guide rail seat (34).
  6. 6. The airbag tube vertical type thermal spinning machine according to claim 5, wherein: The butt joint ends of the lower core shaft (21) and the upper core shaft (31) are respectively provided with a raised head (311) in a protruding mode, and the diameter of the raised head (311) is matched with the diameter of a shrinkage part (101) of the spinning part of the air bag tube (10).
  7. 7. The airbag tube vertical type thermal spinning machine according to claim 6, wherein: The center of the protruding head (311) of the lower mandrel (21) is recessed with a jack (312), a plurality of supporting blocks (313) are arranged at the jack (312) along the axial direction at equal intervals, the supporting blocks (313) are rotatably and swingably arranged on the protruding head (311), the supporting blocks (313) are arranged in an L shape, and the supporting blocks (313) comprise a pressing part (3131) and a supporting part (3132).
  8. 8. The airbag tube vertical type thermal spinning machine according to claim 7, wherein: The upper mandrel (31) is provided with a cutting (314) inserted into the insertion hole (312) on the protruding head (311), the cutting (314) is inserted into the insertion hole (312) to press the supporting block (313) to swing, so that the supporting part (3132) extends out of the corresponding protruding head (311) to support the protruding part (102) of the spinning part of the air bag tube (10).
  9. 9. The airbag tube vertical type thermal spinning machine according to claim 8, wherein: The hot spinning mechanism (4) comprises a first lifting module (43), a second lifting module (44), a first horizontal movement module (45) and a second horizontal movement module (46); the first lifting module (43) drives the first horizontal movement module (45) to lift and move, the first horizontal movement module (45) drives the electric heating coil (41) to horizontally move, and the first horizontal movement module (45) synchronously drives the infrared induction instrument (47) to move; The second lifting module (44) and the second horizontal movement module (46) are arranged in parallel, the second lifting module (44) drives the corresponding second horizontal movement module (46) to lift and move, and the second horizontal movement module (46) drives the hot pressing wheel set (42) to move horizontally.
  10. 10. The airbag tube vertical type thermal spinning machine according to claim 1, wherein: the hot pressing wheel set (42) comprises a first hot pressing wheel (421) and a second hot pressing wheel (422); the first hot pressing wheel (421) is independently arranged, and the first hot pressing wheel (421) is rotatably arranged on one side of the air bag tube (10); The second hot pressing wheels (422) are arranged side by side, and the second hot pressing wheels (422) are rotatably arranged on the other side of the air bag tube (10); and a water cooling pipe (423) is arranged at the rotating shaft of the first hot pressing wheel (421) and the second hot pressing wheel (422).

Description

Vertical hot spiral machine of air bag pipe Technical Field The invention relates to pipe fitting hot spinning equipment, in particular to a vertical hot spinning machine for an air bag pipe. Background The air bag pipe is also called an air bag pipe or an inflatable pipe, is a special gas conveying pipeline for connecting a gas generator and an air bag body in an automobile air bag system, and is a key channel for millisecond-level rapid inflation of the air bag. After collision triggering, the gas generator instantaneously generates a large amount of high-pressure nitrogen, and the high-pressure nitrogen is quickly, uniformly and leaklessly conveyed to the air bag through the air bag pipe, so that the air bag is completely unfolded within 30-50 milliseconds, a buffer is formed between an occupant and a hard object in the vehicle, and the air bag pipe is divided into a flexible air bag pipe and a rigid air bag pipe. The rigid air bag pipe has the characteristics of good rigidity, no collapse and stable air flow, is used for a scene requiring accurate air guide, and is extremely easy to cause collapse of a hot spinning part when the rigid air bag pipe is hot spun due to the hollow inside when the existing rigid air bag pipe is hot spun. In the prior art, as in the chinese patent application No. 202310274485.2, a strong hot spinning method for thin-wall titanium alloy with large length-diameter ratio is specifically disclosed, the main shaft drives the main core mold to rotate, the three spinning rollers can actively rotate, and can also passively rotate under the driving of friction force, the main movement mode of the spinning rollers is axial movement, the material is thinned, the length of the material is changed while being thinned, the inner diameter is basically unchanged, the induction heating coil preheats the material to be formed before the spinning rollers, the induction heating coil and the spinning rollers have a certain position relationship, and can move in the axial direction together with the spinning rollers, so that the material before the spinning rollers can always be kept in the preheating, heating and heat preservation processes, the deformation process can be smoothly carried out, the two temperature measuring devices can also move together with the heating device, continuously measure the temperature and feed back to the system, and the system finely adjusts the heating power according to the set temperature, so as to ensure that the forming temperature interval meets the requirements. Although the above patent document shows that the core mold of the main body is inserted into the thick-walled tube of the original blank to support the thick-walled tube, the thick-walled tube of the original blank in the technology still has great difference from the rigid air bag tube of the present application, and particularly, the hollow shape formed by the rigid air bag tube of the present application after the hot spinning needs to ensure that the core mold inside the supporting rigid air bag tube can be smoothly taken out. Disclosure of Invention According to the vertical type thermal spinning machine for the air bag tube, the mandrels for supporting the inside of the air bag tube are arranged in a split mode to form the upper mandrel and the lower mandrel, the upper mandrel and the lower mandrel are matched to support the inside of the air bag tube, and meanwhile, the upper mandrel and the lower mandrel are respectively pulled out from the upper side and the lower side when the air bag tube is pulled out, so that rigid support and smooth pulling-out of the air bag tube by the upper mandrel and the lower mandrel are achieved. In order to achieve the above purpose, the present invention provides the following technical solutions: An airbag tube vertical thermal swing machine comprising: the device comprises a clamping mechanism, a lower mandrel mechanism, an upper mandrel mechanism and a hot spinning mechanism; The clamping mechanism is arranged on the workbench, is positioned between the lower mandrel mechanism and the upper mandrel mechanism, clamps the lower end part of the airbag tube which is vertically arranged, and drives the airbag tube to synchronously and automatically rotate; the lower mandrel mechanism is arranged right below the clamping mechanism and comprises a lower mandrel which is ejected from bottom to top, and the lower mandrel passes through the clamping mechanism and is inserted into the air bag tube; The upper mandrel mechanism is arranged right above the clamping mechanism and comprises an upper mandrel which descends from top to bottom, the upper mandrel and the lower mandrel are coaxially arranged, and the upper mandrel is inserted into the air bag tube; The hot spinning mechanism is arranged on the annular direction of the air bag tube and comprises an electric heating coil and a hot-pressing wheel set, the electric heating coil heats the hot spinning position of the