US-12617650-B2 - Yarn path guide mechanism and textile machine

US12617650B2US 12617650 B2US12617650 B2US 12617650B2US-12617650-B2

Abstract

It is possible to suppress damage to a yarn path guide mechanism and a textile machine. There is a first supporter which makes contact with a supporting shaft supporting a roller, a second supporter which is capable of making contact with the supporting shaft, and a biasing member which biases the second supporter in a direction in which the supporting shaft is sandwiched between the second supporter and the first supporter. When a virtual straight line which passes through a winding center and a rotation center is a first virtual straight line whereas a virtual straight line which extends in a direction orthogonal to the first virtual straight line and passes through the rotation center is a second virtual straight line, the second supporter makes contact with a part of the supporting shaft, which is positionally opposite to the winding center over the second virtual straight line.

Inventors

Motohiro Tanigawa
Yoshinori Miura
Masatsugu Goyude
Toshihiro Matsui
Hirotaka Wada
Yoshihiro Kino
Hidehiro TAKEOKA
Yasuhiro SAKANASHI
Dai SHIMIZUBE
Daigoro Nakamura

Assignees

MURATA MACHINERY, LTD.
TOYOTA JIDOSHA KABUSHIKI KAISHA

Dates

Publication Date: 20260505
Application Date: 20240529
Priority Date: 20230530

Claims (6)

1 . A yarn path guide mechanism capable of guiding running fiber bundles, comprising: a roller which allows the fiber bundles to be wound onto the roller; a supporting shaft which supports the roller to be rotatable; a first supporter which makes contact with an outer circumferential surface of the supporting shaft at least on one side of the roller in an axial direction of the supporting shaft; a second supporter which is provided at a position where the supporting shaft is sandwiched between the second supporter and the first supporter and is able to make contact with the outer circumferential surface of the supporting shaft at least on the other side of the roller in the axial direction, the other side being opposite to the one side; and a biasing member which is configured to bias the second supporter in a direction in which the supporting shaft is sandwiched between the second supporter and the first supporter, the supporting shaft being supported in such a way that the supporting shaft is clamped between the first supporter and the second supporter, and when a virtual straight line which is orthogonal to the axial direction and passes through a winding center that is the center in a circumferential direction of the roller at a part where the fiber bundles are wound onto the roller and a rotation center of the supporting shaft is a first virtual straight line whereas the virtual straight line which extends in a direction orthogonal to both the axial direction and the first virtual straight line and passes through the rotation center is a second virtual straight line, the second supporter making contact with a part of the outer circumferential surface of the supporting shaft, which is positionally opposite to the winding center over the second virtual straight line.
2 . The yarn path guide mechanism according to claim 1 , wherein, in at least one of the first supporter or the second supporter, a notch is formed in a part opposing the outer circumference of the supporting shaft.
3 . The yarn path guide mechanism according to claim 1 , further comprising: a base to which the first supporter and the second supporter are attached; and a connecting tool which directly or indirectly connects the supporting shaft with the base.
4 . A textile machine comprising the yarn path guide mechanism of claim 1 .
5 . The textile machine according to claim 4 , further comprising: a sensor which is capable of detecting that support of the supporting shaft by the first supporter and the second supporter is canceled; a conveyance mechanism which is configured to convey the fiber bundles at a location at least downstream of the yarn path guide mechanism in a running direction of the fiber bundles; and a controller, the controller stopping conveyance of the fiber bundles by the conveyance mechanism, when the sensor detects that the support of the supporting shaft is canceled.
6 . The textile machine according to claim 4 , further comprising: a first guide member which is provided upstream of the yarn path guide mechanism in a running direction of the fiber bundles and is capable of guiding the running fiber bundles; and a second guide member which is provided downstream of the yarn path guide mechanism in the running direction of the fiber bundles and is capable of guiding the running fiber bundles, when the support of the supporting shaft by the first supporter and the second supporter is canceled, a yarn path between the first guide member and the second guide member being short as compared to a case where the support shaft is supported by the first supporter and the second supporter.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of Japanese Pat. App. No. 2023-088635, filed on May 30, 2023, which application is incorporated herein by reference in its entirety. This application claims the benefit of Japanese Pat. App. No. 2023-081666, filed on May 20, 2024, which application is incorporated herein by reference in its entirety. BACKGROUND This disclosure relates to a yarn path guide mechanism for guiding running fibers, and a textile machine including the yarn path guide mechanism. In a textile machine, a yarn path guide mechanism is provided to guide running fibers. For example, Japanese Laid-Open Patent Publication No. 2021-142720 discloses a filament winding device that guides a fiber bundle supplied from a unwinding mechanism to a winding target by a winding head and winds the fiber bundle onto the winding target. In such a filament winding device, a guide roller (yarn path guide mechanism) configured to guide a running fiber bundle is provided between the unwinding mechanism and the winding head. In the above-described textile machine, if the yarn supply is completely stopped or delayed on the upstream side in the running direction of the fibers of the yarn path guide mechanism due to poor unwinding of fibers or entanglement of the fibers, a large tension is generated in the fibers guided by the yarn path guide mechanism. As a result, a large force is applied to various mechanisms and components such as the yarn path guide mechanism in the textile machine, resulting in damage to the yarn path guide mechanism and the textile machine. It could therefore be helpful to provide a yarn path guide mechanism with which damage to a yarn path guide mechanism and a textile machine can be suppressed, and a textile machine including the yarn path guide mechanism. SUMMARY We thus provide: According to a first aspect, a yarn path guide mechanism which is capable of guiding running fiber includes: a roller which allows the fiber bundles to be wound onto the roller; a supporting shaft which supports the roller to be rotatable; a first supporter which makes contact with an outer circumferential surface of the supporting shaft at least on one side of the roller in an axial direction of the supporting shaft; a second supporter which is provided at a position where the supporting shaft is sandwiched between the second supporter and the first supporter and is able to make contact with the outer circumferential surface of the supporting shaft at least on the other side of the roller in the axial direction, the other side being opposite to the one side; and a biasing member which is configured to bias the second supporter in a direction in which the supporting shaft is sandwiched between the second supporter and the first supporter, the supporting shaft being supported in such a way that the supporting shaft is clamped between the first supporter and the second supporter, and when a virtual straight line which is orthogonal to the axial direction and passes through a winding center that is the center in a circumferential direction of the roller at a part where the fiber bundles are wound onto the roller and a rotation center of the supporting shaft is a first virtual straight line whereas the virtual straight line which extends in a direction orthogonal to both the axial direction and the first virtual straight line and passes through the rotation center is a second virtual straight line, the second supporter making contact with a part of the outer circumferential surface of the supporting shaft, which is positionally opposite to the winding center over the second virtual straight line. According to this aspect, the roller receives a force exerted in direction from the winding center to the rotation center on the first virtual straight line, from the fiber bundles wound on the roller. The acted force increases as the tension generated in the fiber bundles increases. When a large tension is generated in the fiber bundles and the force acting on the roller becomes large, the second supporter moves in a direction against the biasing force of the biasing member. As a result, the support of the supporting shaft by the first supporter and the second supporter is canceled. Because the tension generated in the fiber bundles is lowered, damage to the yarn path guide mechanism and the textile machine in which the yarn path guide mechanism is provided can be suppressed. According to a second aspect, the yarn path guide mechanism of the first aspect is arranged so that, in at least one of the first supporter or the second supporter, a notch is formed in a part opposing the outer circumference of the supporting shaft. According to this aspect, at the portion of the first supporter and/or the second supporter where the notch is formed, the supporting shaft makes contact with the first supporter and/or the second supporter at plural parts, when viewed in the axial direction. The supporting shaf