Improved structure for durability of moving parts in yarn feeding device

Abstract

An improved structure for the durability of moving parts in a yarn feeding device includes a device body and at least one moving part. The device body has a housing and a drive module installed within the housing. The housing has at least one limiting hole on its side. The moving part is coupled to the drive module and has a swing arm. The extended end of the swing arm extends through the limiting hole to the outside and is combined with a yarn guide head, which has a yarn insertion hole. The swing arm is made of metal, and the yarn guide head is made of ceramic, making the swing arm more resilient than the yarn guide head, and the yarn guide head more rigid than the swing arm. This allows the swing arm to withstand the collision between its reciprocating swinging motion and the limiting hole, and avoids single-point contact friction of the yarn within the yarn insertion hole, which could lead to localized wear and grooves, thus ensuring smooth yarn guidance.

Claims

1. An improved structure for the durability of moving parts in a yarn feeding device, suitable for installation on a textile machine, comprising: A device body has a housing and a drive module installed inside the housing, and the side of the housing is provided with at least one limiting hole; In addition, at least one movable member is coupled to the drive module and is driven by the drive module to swing back and forth relative to the housing; the movable member has a swing arm, the extended end of which extends to the outside through the limiting hole and is combined with a yarn guide head, the yarn guide head having a yarn-passing hole for yarn to pass through; wherein the swing arm is made of metal and the yarn guide head is made of ceramic, and the swing arm has greater toughness than the yarn guide head, and the yarn guide head has greater hardness than the swing arm, the kinetic energy of the drive module is transmitted through the swing arm, and the yarn guide head guides the yarn.

2. The improved structure for the durability of moving parts of the yarn feeding device as described in claim 1, wherein, The extended end of the swing arm is provided with a receiving groove for the yarn guide head to be inserted. The yarn guide head is provided with a fitting part corresponding to the receiving groove. The fitting part is fixed in the receiving groove, so that the yarn guide head can be removed and replaced from the swing arm.

3. The improved structure for the durability of moving parts of the yarn feeding device as described in claim 2, wherein, The two sides of the extended end of the swing arm body extend axially to form a first groove wall and a second groove wall to form the receiving groove. The axial length of the first groove wall is greater than the axial length of the second groove wall, and a locking protrusion is provided on the side of the second groove wall opposite to the first groove wall. The fitting part is provided on the side of the yarn guide head opposite to the second groove wall, has a stop corresponding to the top surface of the second groove wall, and the fitting part has an inner groove corresponding to the locking protrusion for the locking protrusion to be inserted.

4. The improved structure for the durability of moving parts of the yarn feeding device as described in claim 1, wherein, The threading hole is a guide groove that extends obliquely downward from the top surface of the yarn guide head and connects to the front side of the yarn guide head, and has a downward guiding slope.

5. The improved structure for the durability of moving parts of the yarn feeding device as described in claim 1, wherein, The top surface of the housing is provided with a yarn feeding frame, which has at least one yarn feeding hole to correspond to the yarn threading hole of the yarn guide head.

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