Gripper head for rapier loom

Abstract

The invention discloses a gripper head for a rapier loom and relates to the technical field of rapier looms. The technical problem is solved that due to friction, an existing gripper head is short inservice life. The gripper head is characterized by comprising a gripper shell, a yarn receiving rod, an extrusion part and an elastic part, the tail end of the gripper shell is provided with multiplepressing mechanisms located on the upper and lower side faces of the yarn receiving rod separately, each pressing mechanism comprises a connection cylinder inserted in the gripper shell and communicated with a containing area, a ball which is slidingly connected into the connection cylinder, extends in the containing area and abuts against the surface of the yarn receiving rod, an elastic reset part fixed into the connection cylinder and used for controlling an abutting part to abut against the yarn receiving rod and an anti-fall-off part fixed to the end, away from a placement groove, of theconnection cylinder and used for limiting the elastic reset part into the connection cylinder, and the end, extending in the containing area, of each connection cylinder is provided with a necking down port for preventing the corresponding ball from directly falling off from the interior of the corresponding connection cylinder. The gripper head has the advantage that the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of rapier looms, more specifically, it relates to a rapier head for a rapier loom. Background technique [0002] The rapier loom is the most widely used shuttleless loom at present, and the rapier is an important component in the weft insertion mechanism of the rapier loom. The rapier is a relatively expensive consumable, and frequent replacement will undoubtedly increase the weaving cost. However, in fact, for the entire rapier head, only the head of the yarn receiving rod will often be unusable due to friction and wear. At this time, replacing the entire rapier head will result in a waste of resources. [0003] The Chinese patent whose authorized notification number is CN105544066B discloses a rapier head for a rapier loom, including a yarn connecting rod, a sword housing with a yarn receiving rod accommodation area, an extruding part, and an elastic part. In the accommodating area and connected with the ...

AI Technical Summary

Problems solved by technology

[0004] Similar to the rapier head mentioned above in the prior art, it is composed of a sword case, an extruded part, an elastic part and a yarn connecting rod, wherein the yarn connecting rod is divided into a first rod body and a second rod body which are detachably connected, so that The first rod body used to pull weft yarn can be replaced directly after wear and tear; however, if the loom runs at 400 rpm and runs for 20 hours a day, the sword head reciprocates 960,000 times a day, and every weft insertion, yarn splicing The rods will rub against the sword shell. Under such frequent friction, the sword shell and the yarn connecting rod are prone to frictional overheating and static electricity. As a result, the yarn connecting rod is easy to shift when moving, and even if the new yarn connecting rod is replaced, it is difficult to ensure the movement accuracy of the new yarn connecting rod, so it needs to be replaced together with the entire rapier head. According to actual production experience, each rapier loom About 2 pairs of sword cases need to be replaced. According to the calculation of 360 yuan per pair of domestic sword cases (1200 yuan / pair of imported sword cases), for a weaving factory with 200 rapier looms, the replacement of sword cases in one year will cost It costs 144,000 yuan. Therefore, it is urgent to develop a sword head with a long service life.

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