Extruding needle assembling and disassembling system

Abstract

The invention discloses an extruding needle assembling and disassembling system. An extruding needle and an open spanner are included. The extruding needle comprises a large diameter segment and a small diameter segment; the large diameter segment is provided with a clamping groove in the outer side circumferential direction; the open spanner comprises a force arm and a bayonet which are fixedly connected; and a clamping jaw matched with the clamping groove is arranged in the bayonet. In the extruding needle assembling and disassembling system, the open spanner acts on the extruding needle dueto cooperation of the clamping jaw and the clamping groove; due to the arrangement of the open spanner, the length of the force arm during hoisting is obviously increased, and therefore the torque isremarkably increased under the same hoisting capacity, and the purpose of performing strong fastening on the extruding needle is achieved; and meanwhile, the open spanner is also used for disassembling the extruding needle, so that the extruding needle is separated from a needle base. The extruding needle assembling and disassembling system solves the problems that in an existing disassembling method, an extruding needle cannot be screwed down easily, and the extruding needle is prone to loosen in the extruding process; and besides, due to the arrangement of the open spanner, the labor intensity of an operator can be substantially lowered, and the safety risk caused during winding method operation of existing steel wire ropes is eliminated.

Description

technical field [0001] The invention relates to the technical field of heavy machinery, in particular to an extrusion needle loading and unloading system. Background technique [0002] When heavy-duty extruders over 5,000 tons use the extrusion needle method to produce pipes, it is necessary to use the needle point to determine the shape and size of the inner cavity of the pipe. The needle point is fixed on the extrusion needle, needle seat, needle seat connecting rod and other components Perforated support system. The components of the support system are fastened through threaded connections. In order to ensure that the needle point plays a stable and shaping role during the entire extrusion process, the needle point is not allowed to rotate along the extrusion axis. There is looseness in the middle, so as not to cause the deflection of the needle tip and cause the pipe cavity to fail to meet the technical requirements. [0003] Usually, in order to effectively assemble ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the steel wire rope winding method for loading and unloading the extrusion needle is: the steel wire rope is close to the outer diameter surface of the needle seat, and the force arm generated by lifting is short. When the steel wire rope is pulled upward, the extrusion needle is easily lifted upward, causing the extrusion needle The concentricity between the thread and the internal thread of the needle seat is seriously deteriorated, forming a "seizure" situation, and it is not easy to tighten

At the same time, the accidental breakage of the wire rope is also likely to cause personal injury to the operator.

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