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CN-224222897-U - Lifting mechanism for controlling threading guide pipe

CN224222897UCN 224222897 UCN224222897 UCN 224222897UCN-224222897-U

Abstract

The utility model provides a lifting mechanism for controlling a threading guide pipe, which comprises a driving unit capable of driving the threading guide pipe to lift, wherein the driving unit comprises a driving roller and a driven roller, the rotation directions of the driving roller and the driven roller are opposite, the threading guide pipe is arranged between the driving roller and the driven roller, at least one of the driving roller and the driven roller is a roller with a surface coated with an elastic material or a radial elastic telescopic structure, the outer cylindrical surface of the threading guide pipe comprises a friction surface and an anti-rotation surface which are oppositely arranged, the friction surface is in butt joint with the surface coated with the elastic material or the roller with the radial elastic telescopic structure, and the anti-rotation surface is in butt joint with the other roller. When the driving roller or the driven roller drives the threading guide pipe to move up and down, the driving roller or the driven roller can be prevented from slipping or the threading guide pipe can rotate, so that the threading guide pipe can only lift up and down, and the stability of the threading guide pipe during lifting is greatly improved.

Inventors

  • YANG AN

Assignees

  • 河北卓坳科技有限公司

Dates

Publication Date
20260512
Application Date
20250506

Claims (10)

  1. 1. The lifting mechanism for controlling the threading guide pipe is characterized by comprising a driving unit (200) capable of driving the threading guide pipe (300) to lift, wherein the driving unit (200) comprises a driving roller (210) and a driven roller (220), the rotation directions of the driving roller (210) and the driven roller (220) are opposite, the threading guide pipe (300) is arranged between the driving roller (210) and the driven roller (220), the driving roller (210) and the driven roller (220) can clamp the threading guide pipe (300), and the driving roller (210) and the driven roller (220) can move up and down by rotating to clamp the threading guide pipe (300); At least one of the driving roller (210) and the driven roller (220) is a roller with a surface coated with an elastic material or a radial elastic telescopic structure, the outer cylindrical surface of the threading guide tube (300) comprises a friction surface (320) and an anti-rotation surface (310) which are oppositely arranged, the friction surface (320) is in butt joint with the roller with the surface coated with the elastic material or the radial elastic telescopic structure, and the anti-rotation surface (310) is in butt joint with the other roller.
  2. 2. The lifting mechanism for controlling a threading catheter according to claim 1, wherein the driving unit (200) is arranged on the power unit (100), the power unit (100) comprises a driving power piece (110) and a driven power piece (120), the driving power piece (110) can drive the driven power piece (120) to rotate, the driving power piece (110) and the driven power piece (120) rotate in opposite directions, the driving roller (210) is coaxially connected with the driving power piece (110), and the driven roller (220) is coaxially connected with the driven power piece (120).
  3. 3. A lifting mechanism for controlling a threading catheter according to claim 2, characterized in that the driving power member (110) and the driven power member (120) are gears which mesh with each other.
  4. 4. The lifting mechanism for controlling a threading catheter according to claim 2, wherein the power unit (100) is arranged on the fixing seat (400), a lifting channel (410) is formed in the fixing seat (400), and the threading catheter (300) can move up and down along the lifting channel (410).
  5. 5. The lifting mechanism for controlling a threading catheter according to claim 4, wherein the threading catheter (300) extends out of the lifting channel (410) and is capable of penetrating into a lower concave hole of a workpiece (500), and an electrode wire penetrates through the threading catheter (300) through a processing hole of the workpiece (500).
  6. 6. The lifting mechanism for controlling a threading catheter according to claim 4, wherein a driving motor (420) is further arranged on the fixing seat (400), and the driving power piece (110) is connected with an output end of the driving motor (420).
  7. 7. A lifting mechanism for controlling a threading catheter according to claim 1, characterized in that the anti-rotation surface (310) is a planar or grooved structure.
  8. 8. A lifting mechanism for controlling a threading catheter according to claim 1, characterized in that the friction surface (320) is serrated or frosted.
  9. 9. The lifting mechanism for controlling a threading catheter according to claim 1, wherein the friction surface (320) is formed by a plurality of bosses (321) arranged at intervals along the axial direction of the threading catheter (300), and the bosses (321) are abutted with the surface-coated elastic material or a roller with a radial elastic telescopic structure.
  10. 10. The lift mechanism for controlling a threading catheter of claim 1 wherein when the roller is surface coated with an elastomeric material, the elastomeric material is rubber; when the roller is provided with a radial elastic telescopic structure, the elastic telescopic structure is an annular ring made of rubber materials.

Description

Lifting mechanism for controlling threading guide pipe Technical Field The utility model relates to the technical field of wire cutting devices, in particular to a lifting mechanism for controlling a threading catheter. Background In the machining process, particularly in the wire cut electrical discharge machining process, it is often necessary to complete the construction of wire-passing paths of electrode wires, such as molybdenum wires, copper wires or galvanized wires, and then cut the wires after the wire passing is completed. In the prior wire threading method, a wire threading mechanism above a workpiece is used for threading a wire electrode through a workpiece hole and then feeding the wire electrode into a wire feeding mechanism, in order to realize accurate wire threading, a fixed seat is arranged on the wire feeding mechanism, a lifting channel is arranged in the fixed seat, a wire threading guide tube is arranged in the lifting channel, the wire threading guide tube is only controlled to lift and lower so as to realize butt joint with the workpiece or the wire threading mechanism, and the wire threading path of the wire electrode is built. Disclosure of utility model The utility model provides a lifting mechanism for controlling a threading catheter, which aims to solve the problem that the threading catheter is not lifted smoothly due to the fact that the threading catheter is smooth in appearance and is generally cylindrical, and when the threading catheter is driven, the threading catheter rotates or a driving unit and the threading catheter slip. In order to achieve the above purpose, the utility model provides a lifting mechanism for controlling a threading catheter, which comprises the following specific technical scheme: The driving unit comprises a driving roller and a driven roller, the rotation directions of the driving roller and the driven roller are opposite, the threading guide pipe is arranged between the driving roller and the driven roller, the driving roller and the driven roller can clamp the threading guide pipe, and the driving roller and the driven roller can move up and down by rotating to clamp the threading guide pipe; At least one of the driving roller and the driven roller is a roller with a surface coated with an elastic material or a radial elastic telescopic structure, the outer cylindrical surface of the threading guide tube comprises a friction surface and an anti-rotation surface which are oppositely arranged, the friction surface is in butt joint with the roller with the surface coated with the elastic material or the radial elastic telescopic structure, and the anti-rotation surface is in butt joint with the other roller. In one embodiment, the driving unit is arranged on the power unit, the power unit comprises a driving power piece and a driven power piece, the driving power piece can drive the driven power piece to rotate, the driving power piece and the driven power piece rotate in opposite directions, the driving roller is coaxially connected with the driving power piece, and the driven roller is coaxially connected with the driven power piece. In one embodiment, the driving power member and the driven power member are intermeshing gears. In one embodiment, the power unit is arranged on the fixing seat, a lifting channel is formed in the fixing seat, and the threading guide pipe can move up and down along the lifting channel. In one embodiment, the wire threading guide pipe extends out of the lifting channel and can penetrate into a lower concave hole of the workpiece, and the electrode wire penetrates through the wire threading guide pipe through a machining hole of the workpiece. In one embodiment, the fixing seat is further provided with a driving motor, and the driving power piece is connected with the output end of the driving motor. In one embodiment, the anti-rotation surface is a plane or a groove structure. In one embodiment, the friction surface is serrated or frosted. In one embodiment, the friction surface is formed by a plurality of bosses which are arranged at intervals along the axial direction of the threading catheter, and the bosses are abutted with rollers with the surfaces coated with elastic materials or provided with radial elastic telescopic structures. In one embodiment, when the roller is surface coated with an elastic material, the elastic material is rubber; when the roller is provided with a radial elastic telescopic structure, the elastic telescopic structure is an annular ring made of rubber materials. The beneficial effects of this embodiment are: At least one of the driving roller and the driven roller is made of a surface-coated elastic material or is provided with a roller with a radial elastic telescopic structure, the outer cylindrical surface of the threading guide tube comprises a friction surface and an anti-rotation surface which are oppositely arranged, the friction surface is abutted against the surface-coated el