JPS61108752A - Support mechanism of weft yarn treatment apparatus in shuttleless loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a support mechanism for a weft processing device in a shuttleless loom such as a fluid jet loom, a rapier loom, or a gripper loom.

(Prior art) In general, shuttleless looms aiming at higher speeds, especially fluid injection type Ii
The incidence of weft insertion errors on looms is higher than on framed looms, but stopping the loom to deal with weft insertion errors goes against the productivity improvement that is the reason why looms are designed for higher speeds. be. However, once a weft insertion error occurs, in order to maintain the quality of the woven fabric, the loom must be stopped and the weft insertion error taken care of.The loom uses a weft detection device to detect the weft insertion error. The machine is stopped based on a signal, but in order to prevent damage to various parts of the high-speed loom, the machine is stopped after the machine has inertia operated for more than one rotation. The material is beaten with a reed before the machine stops and is woven into the fabric. Therefore, the machine must be reversed to release the warp from holding the misplaced thread and remove the misplaced thread, but conventionally, this misplaced thread removal work has been done manually. However, since the misplaced yarns are embedded in the woven fabric in the same way as normal weft yarns, even when the warp threads are set to the maximum open state, the state in which the misplaced threads are held by the warp threads is not sufficiently released. Therefore, the task of removing misplaced threads becomes very complicated, and the loom is stopped for a long time, which impedes productivity improvement.

In order to solve such problems, for example,
As disclosed in Japanese Patent Application No. 220856, a means has been proposed in which a weft processing device including a weft separation member for separating the erroneous yarn from the woven fabric is disposed above the front of the woven fabric within the woven width. . Missed yarn 1 is removed from the woven fabric by the weft separation member.
In order to perform the extremely delicate weft separating action of separating books, high precision is required in the positional relationship between the weft processing device and the woven fabric. The weft processing device, which is usually in a retracted position outside the weaving width, is moved to an appropriate position within the weaving width, and the weft separation member is advanced from outside the warp opening into the warp opening to weave. The erroneous yarn is separated from the fabric.

(Problem to be Solved by the Invention) However, since both ends of the guide rail are supported by support ronds directly attached to the left and right side frames of the loom, the guide rail cannot be moved during normal operation of the loom. is continuously subjected to intense vibrations and shocks peculiar to a loom, and the weft processing device is also subjected to similar vibrations and shocks. As a result, various parts of the weft yarn processing device, which has the extremely delicate operation and action of sweeping the woven cloth and separating one misplaced yarn from the woven cloth with the weft separating member, are quickly damaged, resulting in extremely severe damage as described above. There is a problem in that the weft separation operation, which requires delicate movements and actions, is hindered, and the function to reliably separate the misplaced yarns from the woven fabric is quickly lost.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention creates an open state of the warp threads and changes the weaving state of the weft threads woven into the woven fabric immediately before the machine stops. A weft processing device for separating the weft from the woven fabric by entering a weft separating member from outside the warp opening within the weaving width into the warp opening in the released state is supported by a guide rail so as to be movable in the weaving width direction, At least a retracted portion of the rail outside the weaving width of the weft processing device is arranged independently from the machine stand.

(Function) That is, for example, the guide rail corresponding to the inside of the weaving width is supported at both ends by support rods that are erected and supported on both the left and right side frames of the loom, and the guide rail corresponding to the inside of the weaving width of the weft processing device during normal operation of l1ia is supported at both ends. By arranging an evacuation guide rail independently from the machine base so as to be separated from the guide rail at the evacuation position of the loom, vibrations and shocks peculiar to the loom during normal operation can be removed from the guide rails attached to both support rods. It will not reach the evacuation guide rail. Therefore, during normal operation of the loom, the weft processing device, which is retracted on the evacuation guide rail, is not subjected to the vibrations and shocks peculiar to the loom, which prevents early damage due to such vibrations and shocks, and further ensures reliable weft separation. No loss of functionality is caused.

(Example) Hereinafter, an example in which the present invention is embodied in a fluid injection type loom will be described based on FIGS. 1 to 3.

2 is a machine stand, and support rods 4 and 5 are erected on both left and right side frames 2.3, respectively. An abbreviated support bracket 6.7 is fixed to the upper front surface of both ronds 4.5, and includes a large number of weft guide members 33 for guiding weft insertion, an auxiliary weft insertion nozzle 34, a reed 35, and as shown in the figure. A traveling guide rail 8 is suspended and supported between both brackets 6 and 7 above the sleigh 36 equipped with a main weft insertion nozzle.

A stand 9 is installed on the floor on the side opposite to the weft insertion side of the machine base 1.
A retracting guide rail 10 is mounted on the upper end of the stand 9 and is fastened and supported in the direction of the traveling guide rail 8 at the same height as the traveling guide rail 8 so as to be vertically adjustable. The evacuation guide rail 10 is spaced apart from one end of the running guide rail 8 to an extent that is slightly larger than the vibration width of the machine stand 1 during normal operation of the loom, and the weft processing device 11 is retracted onto the evacuation guide rail 10.

As shown in FIG. 2.3, the weft processing device 11 in this embodiment is guided by a guide roller 13 provided inside the clay wall of the frame 12 and a drive roller 15 driven by a drive motor 14 capable of forward and reverse rotation. It is suspended and supported on the rails 8 and 10 so that it can run, and its position is regulated by a plurality of guide rollers 16 provided inside the side walls so that it can run in the direction of the guide rails 8 and 10.

A drive motor 17 capable of forward and reverse rotation is provided on the side wall of the frame 13, and a shaft 19 rotatably supported by a bifurcated support bracket 18 attached to the inside of the earthen wall of the frame 12 is driven. It is rotated by a motor 17. An arm 20 is rotatably supported by the coaxial shaft 19, and a shaft 21 is rotatably supported at its lower end.
is transmitted to the shaft 21 via. Timing boo IJ24
A weft separation member 25 is fixed to the side surface of the weft separation member 25 , and a brake lining 26 is fixed to the side surface of the separation member 25 , and the lining 26 is pressed against the arm 20 . Moreover, the weft gripping lever 27 and the latch lever 28
are arranged so as to be rotatable in the front-rear direction (left-right direction in FIG. 3), and their ends can be hooked to each other. The rotation range of the arm 20 is restricted by a pair of restriction rods 31 and 32 protruding from the side wall of the frame 13, and when the drive motor 17 is rotated forward, the arm 20 and the weft separation member 25 are moved to the third position. They integrally rotate from the solid line position to the chain line position in the figure, and the missed thread (
(path shown) is separated. As the drive motor 17 further rotates in the normal direction, only the weft separation member 25 rotates relative to the arm 20, and a part of the separated miss yarns is pulled out from inside the warp opening to outside the warp opening, and the separated weft yarns are removed. Grip lever 2
The weft separating member 2 is disposed between the gripping portion 27a and the receiving portion 29 of the latching lever 28, and the weft separation member 2
5 comes into contact with each other, the lever 28 and the weft gripping lever 27 are unlatched, and the spring 30 causes the gripping part 27a and the receiving part 2
9 are joined, and the miss yarn is held between them. Therefore, after the weft separation operation is performed at a plurality of positions to separate most of the misplaced yarns from the woven fabric, a portion of the misplaced yarns are pulled out outside the warp shedding and gripped, and the weft processing device 11 is run from this state. If so, the remaining mis-threads are pulled out of the warp shedding.

This weft processing device 11 is retracted on the evacuation guide rail 10 during normal operation of the loom, and when a weft insertion error occurs, a weft detection device (usually a weft guide member located near the fabric edge on the opposite side of weft insertion) The drive motor 14 is driven based on the weft insertion error detection signal (which is also a machine stop signal) from the weft insertion error detection signal (which is also a machine stop signal) from the light emitting/receiving elements arranged oppositely across the slit 33a, and the weft processing device 11 runs. The weft separation operation and the weft withdrawal operation as described above are performed at a predetermined position on the rail 8. Therefore, the vibration of the loom l during normal operation of the loom,
No impact is transmitted to the weft processing device 11, and there is no risk of damage to various parts of the weft processing device 11 due to vibrations and impacts specific to a loom. As a result, the extremely delicate weft separation operation in which one misplaced yarn is separated from the front W1 of the woven fabric W by the weft separation member 25 is not hindered, and the weft separation operation is reliably performed. Naturally, such a weft separation function can be maintained for a long period of time, and the service life of the weft processing device 11 is significantly improved.

The present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. 4, an evacuation guide rail 10 supported by a stand 9 may be arranged on the weft insertion side of the machine base 1, or as shown in FIG. The evacuation guide rail 10 may be supported independently from the machine stand 1 by a rod 37 hanging from the ceiling. Alternatively, an evacuation guide rail may be attached to or supported by the wall. Furthermore, as shown in FIG. 4, stands 9 may be arranged on both sides of the machine base 1, and one guide rail may be suspended and supported by both stands 9 independently from the machine base.

Effects of the Invention As detailed above, the support mechanism of the weft processing device of the present invention has an excellent effect in that the reliable weft separation function of the weft processing device can be maintained for a long period of time.

[Brief explanation of drawings]

1 to 3 show an embodiment embodying the present invention.
The figure is a front view of the machine base and guide rail, Figure 2 is a partially cutaway front view showing the vicinity of the evacuation guide rail, Figure 3 is a side sectional view, and Figures 4 and 5 all show another example of the present invention. FIG. Traveling guide rail 8, stand 9, evacuation guide rail 10, weft processing device 11, loft 37° for supporting evacuation guide rail

Claims (1)

[Claims] 1. Form the open state of the warp threads, release the weft state of the weft threads woven into the fabric just before the machine stops, and in this state enter the weft separation member from outside the warp opening within the weaving width into the warp opening. In a support mechanism for a weft processing device that separates the weft from a woven fabric, at least a retracted portion outside the weaving width of the weft processing device of a guide rail that guides the weft processing device in the weaving width direction is separated from the machine stand. A support mechanism for the weft processing device in a shuttleless loom.