JPH0718686Y2 - Pneumatic yarn joining device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a pneumatic yarn splicing device.

[Conventional technology]

A yarn splicing device utilizing an air flow is known. That is, when forming a knotless seam, the peculiar twists of the two yarn ends that are spliced to obtain a good seam are untwisted to make the fibers in a parallel state, and the yarn end region has a yarn end. An air type yarn splicing device having a yarn end untwisting device for removing a part of the monofilaments constituting the above is disclosed in, for example, Japanese Patent Application Laid-Open No. 58-42567.

[Problems to be solved by the invention]

In the pneumatic yarn splicing device having the untwisting device, the untwisting device untwists the yarn end by the action of the air flow jetted into the tubular pipe, and from the yarn inlet side of the untwisting pipe. The air flow ejected from the compressed air ejection nozzle bored in the depth direction passes through the pipe and flows out from the opening at the rear end of the pipe. In this outflowing air stream, fibers separated from the yarn end portion by the untwisting action are mixed and adhere to the surface of the peripheral member,
It accumulates and interferes with the movement of the moving member. In particular, in an automatic winder in which each winding unit is equipped with a pneumatic yarn splicing device having such a detwisting device, a large amount of cotton wool is generated due to the untwisting action.

The present invention aims to solve the above problems.

[Means for solving problems]

The present invention relates to a pneumatic yarn splicing device having a untwisting pipe for untwisting yarn ends to be spliced, and a collecting fiber for discharging separated fibers generated in the yarn end untwisting pipe into a duct arranged along a winder. A cotton pipe is connected to the untwisting pipe, and a space is provided between the outer circumferential surface of the untwisting pipe and the inner circumferential surface of the cotton collecting pipe at the connecting portion.

[Action]

The yarn end is untwisted by the compressed air flow injected into the untwisting pipe, and the fiber separated from the yarn end is discharged into the duct through the cotton collecting pipe.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

2 and 3, the yarn joining device (1) includes a yarn joining member (3) having a yarn joining hole (2), a yarn pressing device (4),
Yarn end untwisting nozzles (5) (6), yarn shifting lever (7), yarn cutting device (8) (9), and yarn clamping device (10)
(11) and so on.

The yarn splicing operation is performed in the following order. That is, when a known automatic winder is provided with a yarn splicing device, first, the yarn (YP) on the package (P) side is a known suction mouth (1
The yarn (YP) on the package side is guided to the front of the yarn joining device by the suction movement of the suction mouth (12) by the swiveling motion of the suction mouth (12), and a part of it is clamped by the clamp device (10). The yarn (YB) on the (B) side is also guided by the relay pipe (13) that rotates, and is clamped by the clamp device (11). Next, by the turning movement of the thread shifting lever (7), the thread (YP) among the above-mentioned threads (YP) (YB) is guided to the guide grooves (16) (17) and the thread joints of the guide plates (14) (15). Guided and inserted into the hole (2), the other thread (YB) is also inserted into the guide groove (1
8) It is inserted into (19) and the yarn splicing hole (2) and positioned as shown in FIG. Then, the thread cutting device (8)
(9) acts to cut each yarn (YP) (YB) at a certain distance from the clamp position, and the cut yarn end portion is sucked into the yarn end untwisting nozzles (5) and (6). , Is untwisted by the action of the compressed air flow injected into the nozzles (5) and (6) so as to be in a state suitable for yarn splicing. That is, the twist of the yarn is released, and the fibers become parallel to the shape of the tip of the brush. At this time, the yarn pulling lever (7) is at a position retracted in the direction away from the yarn, and the yarn end is deeply sucked into the untwisting nozzles (5) and (6) as shown in FIG.

After the completion of the untwisting action, the yarn pulling lever (7) pivots largely in the direction of approaching the yarn again to pull out the yarn end in the untwisting nozzles (5) and (6), and the yarn pressing device (4) In conjunction with the action, the tip portions of both yarn ends are overlapped in the yarn splicing hole (2), and the untwisted portions are set in an overlapping state.

Then, the yarn splicing is performed as described above by the action of the compressed air flow ejected into the yarn splicing hole (2).

In addition, (20) and (21) of FIG. 2 are control plates fixed to the yarn joining member (3) so as to cover a part of both end openings of the yarn joining hole (2). The flow of the air flow that flows out from the openings at both ends of the hole (2) is controlled.

In FIG. 4, a bush (27) is fitted in the cylindrical recess (26) formed in the nozzle block (25), and the untwisting pipe (28) is inserted into the center hole of the bush (27).

A compressed air injection hole (29) formed in the pipe (28) and inclined in the depth direction opens on the inner peripheral surface of the pipe, and the injection hole (29) is formed into a compressed air passage hole (30) provided in the bush (27). Communicate. Further, an opening (31) for supplying compressed air is formed in a part of the cylindrical recess of the nozzle block (25), and the compressed air supplying thin tube (32) of FIG. 1 is in communication therewith.

Further, in FIGS. 1 and 3, the untwisting pipe (28)
At the rear end of the pipe (28), that is, on the rear end of the pipe where the fluid injected into the pipes (28) (33) flows out, the cotton collecting pipes (34) (35) are connected to the connecting tools (36) (37). ) Is connected by. The cotton collecting pipes (34) (35) are flexible tubes, penetrate the bracket (38) fixed to the winding unit, and are installed along the winding unit as shown in FIG. 1 (39). ) Is connected to.

The duct (39) is connected to an independent blower via a not-shown box, or is connected to a filter box on the body blower side already installed in the winder.

In FIG. 1, the winding unit (U)
A pipe for supplying compressed air (40) (4)
Flexible thin tubes (32, 42) are connected to the unit (1) for each unit and are supplied to the yarn joining nozzle (2) and the untwisting pipes (28) (33) of the yarn joining device.

Therefore, as shown in FIG. 3, the yarn end is untwisted by the compressed fluid jetted into the untwisting pipes (28) (33), and the jetted air flows through the cotton collecting pipes (34) (35). A separate fiber that flows through into the daft (39) and is generated at the same time.
Wastes are discharged to the duct (39).

In addition, in FIG. 3, the pipe (34) and the untwisting pipe (2
Although an example in which a connecting tool (36) is interposed between 8) is shown, of course,
It is also possible to connect the entire pipe (34) as a flexible pipe directly to the end of the untwisted pipe without using a connecting tool.

Further, by expanding the right end opening of the cotton collecting pipes (34) (35) in FIG. 3 into a trumpet shape and removing the connecting fittings (36) (37), the pipes (34) (35) A gap is formed between the untwisting pipes (28) and (33), so that cotton dust and the like from other than the pipes (28) (33) can be sucked into the pipes (34) (35). Also untwisting pipes (34) (35) pipes (28)
(35) By covering the end portion and providing a space between the inner peripheral surface of the pipe (34) (35) and the outer peripheral surface of the pipe (28) (33), floating occurs around the untwisted pipe in the same manner as above. It is possible to suck and discharge the cotton wool.

[Effect of device]

As described above, in the present invention, in the pneumatic yarn splicing device having the untwisting device, the separated fibers generated in the untwisting portion are discharged to the duct through the cotton collecting pipe, and the outer surface of the untwisting pipe and the cotton collecting device are Since the pipes are connected to each other with a space between the inner peripheral surfaces, the separated fibers can be gathered in one place without scattering around the yarn splicing device, and the working environment can be improved and the wind to the yarn splicing device can be improved. It is possible to prevent an obstacle to the yarn splicing operation due to the cotton accumulation.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic structure of a winder showing an embodiment of the device of the present invention, FIG. 2 is a front view showing an example of a pneumatic yarn splicing device, and FIG. 3 is a partial cross-sectional side view showing an essential part of the present invention. Figure, 4th
The figure is a plan view of the same portion. (1)… Pneumatic yarn splicing device (28) (33)… Untwisting pipe (34) (35)… Cotton collecting pipe (39)… Duct

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Publication Sho 61-42708 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A pneumatic yarn splicing device having a untwisting pipe for untwisting yarn ends to be spliced, wherein separation fibers generated in the yarn end untwisting pipe are discharged into a duct arranged along a winder. The cotton collecting pipe is connected to the untwisting pipe, and at the connecting portion, the inner peripheral surface of the end of the cotton collecting pipe and the outer peripheral surface of the end of the untwisting pipe are in a non-adhered state, and the open end of the cotton collecting pipe is shaped like a trumpet. A pneumatic yarn splicing device, which is provided in a state in which it is expanded and a gap is formed between the inner peripheral surface of the cotton collecting pipe end and the outer peripheral surface of the end of the untwisting pipe.