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CN-121972935-A - Positioning and press fitting equipment for C-shaped bushing

CN121972935ACN 121972935 ACN121972935 ACN 121972935ACN-121972935-A

Abstract

The invention relates to the field of mould pressing, in particular to positioning and pressing equipment for a C-shaped bushing, which comprises a double-mode alternative diameter reducing device and a pressing device, wherein the pressing device is used for pressing the C-shaped bushing into a workpiece to be installed in cooperation with the double-mode alternative diameter reducing device, the double-mode alternative diameter reducing device comprises a synchronous transposition driving mechanism and two guide type diameter reducing moulds connected with the synchronous transposition driving mechanism, and an anti-rotation guide strip extending along the axial direction is arranged on the inner hole wall surface of the guide type diameter reducing mould and is configured to be clamped into an opening of the C-shaped bushing to limit rotation of the anti-rotation guide strip. The invention ensures that the C-shaped bushing is always under the constraint of the anti-transduction strip through the anti-transduction strip, effectively prevents the C-shaped bushing from rotating in the compression deformation or transfer process, and solves the interference problem that the deep hole press fitting of the die with the guide strip cannot be realized by matching with the special avoidance type press fitting head and the avoidance type bearing head.

Inventors

  • JIN KANG
  • DING QI
  • BIAN YI
  • ZU WEI
  • GUO PINGAN
  • WANG XIAOGANG
  • XIONG WEIQIANG

Assignees

  • 中机精密成形产业技术研究院（安徽）股份有限公司

Dates

Publication Date
20260505
Application Date
20260203

Claims (9)

  1. 1. Positioning and press-fitting equipment for C-shaped bushings is characterized by comprising: a dual mode alternate diameter reduction device (11) configured to receive the C-shaped liner (1) and transfer it to a press-fitting station; the press-fit device (12) is arranged at the press-fit station and is matched with the double-mode alternate diameter-reducing device (11) to press the C-shaped bushing (1) into a workpiece (124) to be mounted; Wherein, the The dual-mode alternative diameter reducing device (11) comprises a synchronous transposition driving mechanism (112) and two guide type diameter reducing dies (111) connected with the synchronous transposition driving mechanism (112); An anti-rotation guide strip (1114) extending along the axial direction is arranged on the inner hole wall surface of the guide type reducing die (111), and the anti-rotation guide strip (1114) is configured to be clamped into an opening of the C-shaped bushing (1) to limit rotation of the C-shaped bushing.
  2. 2. The positioning and press-fitting apparatus according to claim 1, wherein, The guide type diameter-reducing die (111) comprises a diameter-reducing guide cylinder body (1111), wherein an inner hole of the diameter-reducing guide cylinder body (1111) comprises a conical surface hole (1112) and a cylindrical surface hole (1113) which are continuously arranged along the feeding direction; the anti-steering strip (1114) extends continuously in an axial direction and extends through the tapered bore (1112) and the cylindrical bore (1113).
  3. 3. The positioning and press-fitting apparatus according to claim 2, wherein, The mold further comprises a female mold (123), the guide type diameter reduction mold (111) forms a cavity part of the female mold (123), the workpiece (124) to be mounted is held on the female mold (123), and mounting holes on the workpiece (124) to be mounted are coaxially aligned with the guide type diameter reduction mold (111).
  4. 4. The positioning and press-fitting apparatus according to claim 1, wherein, The press-fit device (12) comprises a press machine (121) and an avoidance type press-fit head (1221), wherein the press machine (121) is used for driving the avoidance type press-fit head (1221) to press the C-shaped liner (1) into a workpiece (124) to be installed; The avoidance type press-fitting head (1221) is of a columnar structure capable of being inserted into an inner hole of the guide type reducing die (111), an avoidance groove is formed in the side wall of the avoidance type press-fitting head (1221), and is configured to accommodate the anti-steering strip (1114) in a press-fitting stroke, so that the avoidance type press-fitting head (1221) can move in the guide type reducing die (111) along the axial direction without interfering with the anti-steering strip (1114).
  5. 5. The positioning and press-fitting apparatus according to claim 4, wherein, The avoidance type press fitting head (1221) is connected with the press machine (121) through a first elastic reset mechanism (1222).
  6. 6. The positioning and press-fitting apparatus according to claim 4, wherein, The press-fit device (12) further comprises an avoidance type bearing head (1231), wherein the avoidance type bearing head (1231) is used for bearing the bottom of the C-shaped bushing (1) when the C-shaped bushing (1) is pressed into a workpiece (124) to be installed; the avoidance type bearing head (1231) is of a columnar structure capable of being inserted into an inner hole of the guide type reducing die (111), and the side wall of the avoidance type bearing head (1231) is provided with an avoidance groove which is configured to accommodate the anti-steering strip (1114) in a press-fitting stroke, so that the avoidance type bearing head (1231) can move axially in the guide type reducing die (111) without interfering with the anti-steering strip (1114); The press-fitting device (12) is configured such that the avoidance type press-fitting head (1221) is pressed down and contacts the upper end surface of the C-shaped bushing (1), the avoidance type bearing head (1231) supports the lower end surface of the C-shaped bushing (1), and then the avoidance type bearing head (1231) is synchronously retracted downwards along with the feeding action of the avoidance type press-fitting head (1221) until the C-shaped bushing (1) leaves the guide type diameter-reducing die (111).
  7. 7. The positioning and press-fitting apparatus according to claim 6, wherein, The avoidance type bearing head (1231) is connected with the frame through a second elastic reset mechanism (1232).
  8. 8. The positioning and press-fitting apparatus according to claim 1, wherein, The synchronous transposition driving mechanism (112) comprises a second rotary driver (1121) and a third rotary driver (1122) which are coaxially nested; The second rotation driver (1121) is connected with a rotary disc, the third rotation driver (1122) is connected with a rotation rod (1125), and the rotary disc and the rotation rod (1125) can rotate independently; the guide type diameter reduction die (111) is slidably arranged on the rotary disc; The second rotary driver (1121) is configured to drive the rotary disk to rotate to exchange positions of the two guide-type diameter reduction molds (111), and the third rotary driver (1122) is configured to drive the two guide-type diameter reduction molds (111) to slide on the rotary disk through the rotary rod (1125) to adjust a space between the two guide-type diameter reduction molds (111).
  9. 9. The positioning and press-fitting apparatus according to claim 8, wherein, The two guide type diameter reduction molds (111) are respectively connected with a long rod sliding block (1123), the long rod sliding blocks (1123) are connected to the rotary disc in a sliding mode, and the sliding directions of the two long rod sliding blocks (1123) are parallel to each other; The end part of each long rod sliding block (1123) is connected with a cylindrical sliding block (1124), a sliding groove (1126) is formed in each rotating rod (1125), and the cylindrical sliding blocks (1124) are in sliding clamping connection with the sliding grooves (1126); when the rotating rod (1125) rotates relative to the rotating disc, the sliding groove (1126) drives the two long rod sliding blocks (1123) to move towards or away from each other by poking the cylindrical sliding blocks (1124).

Description

Positioning and press fitting equipment for C-shaped bushing Technical Field The invention relates to the field of mould pressing equipment, in particular to positioning and press fitting equipment for a C-shaped bushing. Background The C-shaped bushing typically needs to be pressed into the mounting hole of the interference fit to function. In an automated press-fitting process, there are two major technical difficulties. The diameter of the C-shaped bushing is difficult to shrink, the diameter of the C-shaped bushing is larger than that of the mounting hole, radial compression is needed first, and the conventional step-by-step method (firstly external diameter shrinking and then clamping and transferring) is easy to cause the C-shaped bushing to be enlarged due to elastic resilience in the transferring process, so that the C-shaped bushing cannot smoothly enter the mounting hole. The orientation is difficult to maintain, the opening direction of the C-shaped bushing must be aligned with features (e.g., oil holes, locating pins) in the mounting holes, uncontrolled rotation of the C-shaped bushing is very likely to occur during strong compression, and there is a lack of effective restraint means to maintain the opening direction during transfer from the external mold to the workpiece. Disclosure of Invention The invention aims to provide positioning and press-fitting equipment for a C-shaped bushing, which is used for solving the problem that the diameter reduction and the opening direction maintenance of the C-shaped bushing are difficult to be considered in the press-fitting process in the prior art. In order to solve the technical problems, the invention specifically provides the following technical scheme: Positioning and press-fitting equipment for a C-shaped bushing, comprising: The dual-mode alternate diameter reduction device is configured to receive the C-shaped bushing and transfer the C-shaped bushing to the press-fit station; The pressing device is arranged at the pressing station and is matched with the double-mode alternative diameter reducing device to press the C-shaped bushing into the workpiece to be installed; Wherein, the The dual-mode alternative diameter reducing device comprises a synchronous transposition driving mechanism and two guide type diameter reducing dies connected with the synchronous transposition driving mechanism; An anti-rotation guide strip extending along the axial direction is arranged on the inner hole wall surface of the guide type reducing die and is configured to be clamped into an opening of the C-shaped bushing to limit rotation of the C-shaped bushing. Further, the guide type diameter reduction die comprises a diameter reduction guide cylinder body, and an inner hole of the diameter reduction guide cylinder body comprises a conical surface hole and a cylindrical surface hole which are continuously arranged along the feeding direction; the anti-steering strip extends continuously along the axial direction and penetrates through the conical surface hole and the cylindrical surface hole. Further, the mold further comprises a master mold, the guide type reducing mold forms a cavity part of the master mold, the work piece to be mounted is held on the master mold, and the mounting hole on the work piece to be mounted is aligned coaxially with the guide type reducing mold. Further, the press-fitting device comprises a press machine and an avoidance type press-fitting head, wherein the press machine is used for driving the avoidance type press-fitting head to press the C-shaped bushing into a workpiece to be installed; the avoidance type press-fit head is of a columnar structure capable of being inserted into an inner hole of the guide type diameter reduction die, an avoidance groove is formed in the side wall of the avoidance type press-fit head, and is configured to accommodate the anti-steering strip in a press-fit stroke, so that the avoidance type press-fit head can move in the guide type diameter reduction die along the axial direction without interfering with the anti-steering strip. Further, the avoidance type press fitting head is connected with the press machine through a first elastic reset mechanism. Further, the press-fitting device further comprises an avoidance type bearing head, wherein the avoidance type bearing head is used for bearing the bottom of the C-shaped bushing when the C-shaped bushing is pressed into a workpiece to be mounted; The avoidance type bearing head is of a columnar structure capable of being inserted into an inner hole of the guide type reducing die, and the side wall of the avoidance type bearing head is provided with an avoidance groove which is configured to accommodate the anti-steering strip in a press-fit stroke, so that the avoidance type bearing head can move in the guide type reducing die along the axial direction without interfering with the anti-steering strip; The press-fit device is configured such that the avoidance