JPS6059331B2 - Weft tube end yarn holding device in loom winder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction pipe type holding device for end yarns in a room winder, which holds suction end yarns aligned in a parallel state and increases the suction force for end yarns when changing the weft pipe. .

In a room winder, when storing several full main pipes (weft pipes) in a magazine, an end thread holding device is used that suctions each end thread with a suction pipe and tensions it to the side of the loom. provided.

This suction type end yarn holding device is either a cylinder with a slit hole perpendicularly made, or a pipe with a suction port placed outside the magazine of the room winder. Since the suction force of the end thread of the tube is weak, not only this end thread is pulled out, but also other end threads entangled with it are pulled out, resulting in a defect in which two end threads are lined up. In view of the above circumstances, the first object of the present invention is to maintain the suction end threads aligned in a parallel state and to increase the end suction force on the lower end side. The second invention holds the suction end yarns in a parallel state and holds them under suction in a manner that lifts them slightly upward in the pipe so that the ends of the suction end yarns are not entangled in the suction pipe. The purpose is to increase thread suction power. In order to achieve the above-mentioned object, the present invention provides a flat suction tube with a substantially truncated Ξ rectangular shape, and is provided with an end yarn guide at the upper end and a slit for suctioning end yarn over the entire length of the front edge, and a suction tube at the rear end edge of the suction tube. A thick cylindrical path was provided to hold the suctioned end yarns aligned in a parallel state, and a thick cylindrical path was provided at the bottom edge to strengthen the suction force for the end yarns at the lowest position.

Then, in order to prevent the tips of the end yarns aligned and held in a parallel state from becoming entangled, the top end of the thick path at the trailing edge is squeezed or closed, creating a negative pressure in this path, so that the ends of each end yarn are aligned in the path. It moves upward in an orderly manner to avoid the suction position of the suction blower. Next, the present invention will be explained with reference to embodiments shown in the drawings.

In Fig. 1, F is the side frame of the loom, L is the race, S is the shuttle that flies on the race, 1 is the body of the room winder, and the frame F is connected to the side frame F by the bracket T together with the box frame 2 that houses the drive source. There is a woodwind reservoir attached to the top and above the winder section W for storing empty woodwinds. The winder section W holds and rotates the wood pipe using the drive shaft 3 coming out of the box frame 2 and the support rod 4 on the upper part of the machine body, and swings the guide 5 from side to side to wind the fed yarn a while traversing it to form the weft pipe A. . M is magazine, winder section W
It is provided below and connected to the winder section by a chute 7. Now, the pipe head and pipe butt are received in the guides 8 and 9, and several weft pipes C... are stored, and the lowest storage weft pipe C1
is placed on a spring loaded support plate 10. This is pushed into the shuttle S at the time of pipe change. Reference numeral 11 denotes a receiving shelf provided at the entrance of the magazine, which receives the tube B that has slid down the chute 7, and rotates it at the appropriate time to allow it to fall.

The end yarn b emerging from the winding end of the weft tube B passes through the upper guide 5 and becomes the yarn a to be supplied to the weft tube A next time. 12 is the carrier, 13 is the nipper, and the carrier 12 is the guide groove 1 of the fuselage 1.
The cone side of the end yarn b to be cut by the nipper is held between the plate 16 and the head of the hollow wood pipe in the winder section W.

The nipper 13 is attached to the attachment 18 that comes out from the guide groove 17, and when the weft pipe B is placed on the receiving shelf, it advances to the right, intersects with the end yarn b coming out from the end of the winding, cuts and grips it, and moves to the right to pass along the chain line Y. As shown in the figure, when the end yarn is let out from the weft tube B and starts moving leftward at the most advanced position, the end yarn is caught by a yarn end clamp (not shown) and released. Thereafter, the nipper 13 and the carrier 12 return to the standby position indicated by the solid line, the weft tube B falls into the magazine M, and the end yarn Y1 is sucked into the suction member 1 of the present invention. That is,
The suction member H has a substantially truncated triangular shape formed into a flat shape at the suction port 20a which is the tip of a relatively thick suction tube 20 that is inclined upward at an appropriate angle α and is approximately parallel to the suction end thread Y1''. The suction cylinder 21 is installed vertically, and a slit (1 to 5 m/m) 21a for suctioning the end yarn is opened along the entire length of the front edge of the suction cylinder 21. Two end thread guides 21 opened in a funnel shape
aI, 21a'' is provided, and the end yarn Y pulled out from the weft tube B
is guided into the slit 21a. Reference numeral 22 denotes a thick tube path expanded at the rear end edge of the suction tube 21, and the upper end is connected to the end thread guide 21a.
", 21a"" opens to the outside at the rear, and the lower end is the suction pipe 2.
Contacting 0.

This thick cylindrical path 22 serves to align and hold the end threads Y1'' of the suction pipe in a parallel state. This is because a large amount of outside air flows through the thick cylindrical path 22 and flows into the suction pipe 20. Since the airflow does not concentrate on the suction port 20a, each end thread Y1''...
- is not in a posture where it is tilted and intensively sucked into the suction port 20a. Reference numeral 23 denotes a thick tube path expanded at the bottom edge of the suction tube 21, the front end of which communicates with the lower end of the slit 21a, and the rear end of which communicates with the suction port 20a.

This thick tube path serves to strengthen the suction force of the end yarn Y1'' of the weft tube C1 located at the lowest position. This is because a large amount of outside air flows through the thick tube path 23 and flows into the suction tube 20. The suction force of this part is increased.In addition, both thick cylinder paths 22 and 23
It is preferable to make the suction force of 23 stronger. Alternatively, the in-cylinder cross section may be gradually widened as it goes downward to reduce the in-cylinder flow velocity. Next, the second invention will be explained. In this invention, the top surface of the thick cylindrical path 22 at the rear end edge is closed off with a lid 24, as shown in FIG. 4, so that the tips of the end yarns held in parallel and aligned are not entangled. In addition, the thick path 22 is assumed to be thick, so that this thick cylindrical path 22
The inside becomes a cavity where the negative pressure is stronger than that of the slits 21a and 21a'', and as a result, each end yarn tip curves upward in the path as shown in the figure and moves in an orderly manner, avoiding the suction posture to the suction port 20a. (Compare with Fig. 1) The above phenomenon was discovered (clarified) as a result of repeated prototype experiments by the present inventor.The first and second inventions of the present invention are as described above, When the weft tube B is released from the winder section W and placed on the receiving shelf 11, the carrier 12 and the nipper 13 move forward, the nipper cuts and grips the end yarn b emerging from the end of the winding, and the nipper 13 transfers the end yarn Yb to the weft tube. When the end yarn Y is let out from B and passes over the suction cylinder 21 to reach position 13'', the end yarn Y is released.

With this, the end yarn Y1 is sucked into the slit 21a from the upper end yarn guides 21a'', 21a'''', and is neatly sucked into a parallel state as shown in Y1''.
This is due to the action of 2, and the latitudinal tube C at the lowest position
The end threads Y,'' from , are also pulled by the strong suction force of the thick tube path 23, and are not entangled with the upper end threads. In addition, according to the second invention, the tip of the end yarn that is suctioned and held in the suction tube 21 is neatly curved upward by the thick tube path 23 that has a large negative pressure. Entanglement does not occur, and it is possible to completely prevent two yarns from lining up.In addition, if the end yarn Y1'' of the weft tube C1 at the lowest position develops a bridging phenomenon when changing the tube, the cutter 25 installed in FIG.
A function may be added to perform the cutting action. Further, in FIG. 4, an embodiment may be adopted in which the top end inlet of the thick cylinder path 22 is narrowed to increase the negative pressure inside the cylinder.

[Brief explanation of drawings]

FIG. 1 is a front view of a room wine machine equipped with a suction tube of the present invention, FIG. 2 is a plan view of the suction tube of the present invention, FIG. 3 is a left side view of the suction tube, and FIG. It is a front view of the suction tube shown. 21...Suction cylinder, 21a...Slit,
21a''... Slit, 21a''... End thread guide, 22, 23... Thick tube path, 20...
...Suction tube, 20a...Suction port, Y1''...
- End thread, 24... Lid, H... Suction member, 25... Cutter, W... Winder section.

Claims (1)

[Scope of Claims] 1. The suction cylinder is flat and has a substantially truncated triangular shape, and a slit for suctioning the end yarn is vertically provided at the upper end of the suction cylinder over the entire length of the end yarn guide and the front end edge. An end of a weft tube in a room winder, characterized in that the end of the weft tube in a room winder is provided with a thick cylindrical path for holding the suctioned end yarns aligned in a parallel state, and a thick cylindrical path for strengthening the end yarn suction force is provided on the bottom edge. Thread holding device. 2. The suction cylinder is flat and has a substantially truncated triangular shape, and a slit for suctioning the end yarn is provided vertically at the upper end of the suction cylinder over the entire length of the end thread guide and the front edge, and the rear end edge of the suction cylinder is provided with a slit for suctioning the end thread. A thick cylinder path is provided to hold the end yarns aligned in a parallel state, a thick cylinder path is provided at the bottom edge to strengthen the end yarn suction force, and a top end entrance of the thick cylinder path provided at the rear edge of the suction tube is provided. constrict or occlude;
A weft tube end yarn holding device in a room winder, characterized in that the inside of this thick tube path is made negative pressure.