Extrusion needle seat loading and unloading system

Abstract

The invention discloses an extrusion needle seat loading and unloading system. The extrusion needle seat loading and unloading system comprises an extrusion needle seat, a socket wrench and a pin rod.The extrusion needle seat comprises a large-diameter section and a small-diameter section, wherein blind holes are circumferentially formed in the outer side of the small-diameter section. The socketwrench comprises a sleeve and a force arm which are fixedly connected, and the sleeve is provided with through holes of which the quantity is equal to that of the blind holes, wherein the through holes are matched with the blind holes. When the pin rod is used, the pin rod penetrates through the through holes to be inserted into the blind holes matched with the through holes. According to the extrusion needle seat loading and unloading system, by means of the length of the force arm of the socket wrench, the lifting torque under the same lifting capacity is obviously increased, and then the purpose of carrying out strong fastening on the extrusion needle seat is achieved. The problem that a needle seat is not easy to tighten and easy to loosen in the existing loading and unloading methodis solved, the labor intensity of operators is greatly reduced, and the safety risk caused when an existing steel wire rope winding method is adopted for operation is further eliminated.

Description

technical field [0001] The invention relates to the technical field of heavy machinery, in particular to a loading and unloading system for extrusion needle holders. 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 effectivel...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the steel wire rope winding method for loading and unloading the needle holder is that the steel wire rope is close to the outer diameter surface of the needle holder, and the force arm generated by the lifting is short. The concentricity of the inner thread of the connecting rod is seriously deteriorated, forming a "seizure" situation, and it is difficult to tighten

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

Images