JPS6260782A - Yarn end suction device for bobbin yarn - Google Patents

Abstract

PURPOSE:To reduce a suction loss, by constituting a yarn end inside a spindle hole of a wooden bobbin for bobbin yarn so as to be drawn in by suction, after a lower opening of a suction nozzle comes nearer to an upper end part of the bobbin yarn. CONSTITUTION:When a suction nozzle 11 goes down by the drive of a driving cylinder, a side opening 11a of the suction nozzle and a suction duct 1 are interconnected to each other. And, a yarn end 10 inside a spindle hole of bobbin yarn 9 is drawn in the suction duct 1 via the suction nozzle 11. On the other hand, when the suction nozzle 11 goes up by the driving cylinder 6, its interconnection with the suction duct 1 is closed by a valve body by the side opening 11a of the suction nozzle and an inner wall surface 12b of a support cylinder 12. And, the yarn end of the bobbin yarn 9 drawn in the suction duct 1 is held between an edge part of the side opening 11a of the suction nozzle and the inner wall surface 12b of the support cylinder 12. Thus, since suction takes place with the nozzle 11 made to go down, a suction loss is little and suction efficiency is well improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a suction device that suctions and clamps a yarn end inserted into a shaft hole of a wood tube of a pipe yarn.

Conventional technology Conventionally, the end of the thread inserted into the shaft hole of the wood tube of the thread fed into the magazine of a wine goo is suctioned, and the end of the thread is clamped. Devices with various structures are known. As an example of this suction device, as shown in FIG. 6, a suction pipe 31 is provided along the rotation axis of the magazine 30.
An L-shaped suction nozzle 32 is placed at the upper end around a fulcrum, and the suction nozzle 32 is retracted from the suction position opposite to the upper end of the pipe thread 34 fed into the magazine can of the magazine 30 and from the upper end of the pipe thread 34. It is configured to be rotatable between the suction nozzle 32 and the retracted position, and to open and close communication between the suction nozzle 32 and the suction pipe 31 by eccentrically rotating the suction pipe 31 with respect to the suction nozzle 32. Then, as shown in FIG. 7, the suction nozzle 32
is rotated to the suction position, and the suction pipe 31 is eccentrically rotated with respect to the suction nozzle 32 as shown in FIG. The yarn end 35 in the shaft hole 34a is sucked into the suction nozzle 32, and the suction tube 3
1 is eccentrically rotated to close the communication between the suction nozzle 32 and the suction pipe 3I, and the yarn end lO is held between the support plate 33 of the suction nozzle 32 and the upper end of the suction pipe 31. As shown in the figure, there is a device in which a notching operation is performed on the pipe thread 34.

By the way, in the suction device having the above structure, when feeding the yarn into the magazine can of the magazine, the inner diameter of the magazine can is larger than the outer diameter of the yarn in order to make it easier to feed the yarn into the magazine can. In some cases, the yarn is inserted into the magazine can with the axial direction of the yarn being inclined with respect to the axial direction of the magazine can, and the gap between the upper end of the yarn and the lower opening of the suction nozzle is at least about 5mm
A certain gap is provided so that the lower opening of the suction nozzle can reliably face the upper end of the slanted pipe to perform suction work.

In addition, in the above-mentioned suction device, the gap between the lower opening of the suction nozzle and the upper end of the tube yarn is further increased, so that the suction nozzle rotates with respect to the suction tube, and the upper end of the tube yarn is moved. When in the suction position,
This prevents the suction nozzle from coming into contact with the yarn at the upper end of the yarn and cutting the yarn, and preventing the suction nozzle from coming into contact with the yarn itself and damaging the yarn.

Problems to be Solved by the Invention However, in the suction device having the above structure, the gap between the upper end of the tube and the lower opening of the suction nozzle increases by the amount of rotation of the suction nozzle. However, there was a problem in that the suction loss increased accordingly.

Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a pipe yarn that can be made to reduce the suction loss by reducing the gap between the lower opening of the suction nozzle and the upper end of the pipe yarn as much as possible. An object of the present invention is to provide a yarn end suction device.

Steps for Solving the Problems In order to achieve the above object, the present invention provides that after the lower opening of the suction nozzle approaches the upper end of the pipe thread, the thread end in the shaft hole of the wood pipe of the pipe thread is removed. It was designed to be suctioned. That is, the yarn end in the shaft hole of the wood tube of the yarn in the magazine can located at the suction position of the magazine is configured to be suctioned. and a cylindrical suction nozzle that is vertically movable and that faces the shaft hole at the upper end of the tube yarn in the magazine can with the lower end opening located at the suction position, and further has a side opening at a predetermined position on the side wall; a drive cylinder that drives the Kunyong nozzle to move toward or away from the upper end of the pipe yarn; a suction duct that can communicate with the side opening of the suction nozzle; and a suction duct that is in sliding contact with the outer peripheral surface of the side wall of the suction nozzle; and when the suction nozzle is lowered, the side opening of the suction nozzle and the suction duct are communicated, and when the suction nozzle is raised, the communication between the side opening of the suction nozzle and the suction duct is closed; The valve body is configured to sandwich the yarn end of the pipe suctioned into the suction duct between the side opening edge of the suction nozzle.

Effect of the Invention In the above configuration, when the suction nozzle is lowered by the drive of the drive cylinder, the side opening of the suction nozzle and the suction duct are communicated with each other, so that the yarn end in the shaft hole of the pipe yarn is connected to the suction nozzle. At the same time, when the suction nozzle rises due to the drive of the drive cylinder, the valve body closes the communication between the side opening of the suction nozzle and the suction duct, and the suction is sucked into the suction duct. The thread end of the pipe thread thus obtained is held between the side opening edge of the suction nozzle and the valve body.

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

As shown in FIG. 1, the yarn end suction device for a tube yarn according to this embodiment has a plurality of magazines 3. When the magazine can 4 of each magazine 3 is located at the suction position B, the yarn end l in the shaft hole 9a of the pipe yarn 9 in the magazine can 4 is provided above the magazine can 4.
It is configured to suck O and clamp the yarn end 10.

The above-mentioned suction duct l is made of a rectangular cylindrical body, and a suction pipe 2 is connected to one end to constantly draw suction, and
- An opening ta is provided in the side wall.

Further, each of the magazines 4 is arranged below the sacsigin duct l, and the tube yarn 9 is supplied into the magazine can 4 from a tube yarn supplying device (not shown), and the magazine 3
The rotation of the yarn end suction device is detected by a magazine rotation detection microswitch 5 provided at the bottom of the magazine 3, and the yarn end suction device is activated.

A suction nozzle 11 is arranged above the suction position of the magazine can 4 of the magazine 3. That is, a suction nozzle support cylinder 12 having a communication hole 12a communicating with an opening 1a of the side wall is fixed to one side wall of the suction duct l. Inside this support cylinder 12, a cylindrical suction nozzle 11 whose outer peripheral surface is in sliding contact is supported so as to be slidable in the vertical direction, and a suction nozzle drive cylinder 6 is connected via a bracket 13 fixed to the upper surface of the suction duct l. The upper end surface of the suction nozzle 11 is fixed to the tip of the piston rod 6a of the drive cylinder 6. The drive cylinder 6 is driven by opening the electromagnetic valve 7 in response to a detection signal from the microswitch 5 and supplying air from the air supply pipe 8, and directs the suction nozzle 11 into the magazine can 4 located at the suction position. The upper end position A of the pipe thread 9 is separated from the upper end shaft hole 9a, and the pipe thread 9 in the magazine can 4 is located at the suction position.
It is slid in the downward direction on the road between the lower end position B which is close to the upper end shaft hole 9a.

The suction nozzle 11 has a nozzle body itb fixed to the lower end of the side wall 11e, and the lower surface of the nozzle body tib is formed into a conical shape that slopes downward from the inside to the outside.

The side wall 11e of this suction nozzle 11 has a side opening I.
Equipped with La. This side opening 11a is arranged at the lower end position B of the suction nozzle 11 so that it can communicate with the opening 1a provided in the side wall of the suction duct 1;7) through the communication hole 12a provided in the support tube 12. Furthermore, at the upper end position A of the suction nozzle 11, the side opening 11a of the suction nozzle 11 is connected to the inner wall surface 12 of the support cylinder 12 as a valve body.
b to prevent communication between the opening 1a of the suction duct 1 and the communication hole 12a of the support cylinder 12, and the suction nozzle 1. The end 10 of the pipe yarn 9 sucked into the suction duct l is held between the side opening edge of the suction duct l and the inner wall surface 1211 of the support cylinder 12.

According to the above configuration, when the pipe thread 9 supplied into the magazine can 4 is located at the suction position, the microswitch 5 detects that the pipe thread 9 is located at the suction position, and this detection signal causes the electromagnetic valve to 7 operates to drive the drive cylinder 6, and as shown in FIGS. 2 and 3, the suction nozzle 11 is lowered from the upper end position A to the lower end position B with respect to the support cylinder 12. When the suction nozzle 11 is located at the lower end fi2B, the nozzle body 11b of the suction nozzle 11 approaches the upper end of the pipe thread 9, and the side opening 11a of the suction nozzle 11 and the communication hole 12a of the support tube 12 The thread end 10 in the shaft hole 9a of the pipe thread 9 is communicated with the opening 1a of the suction duct 1 through the lower opening 11d of the suction nozzle 11, the nozzle body zb of the suction nozzle 11, the suction nozzle 11. It is sucked into the suction duct 1 through the side opening 11a of the suction nozzle 11, the communication hole 12a of the support cylinder 12, and the opening 1a of the suction duct 1. When the yarn end lO of the pipe yarn 9 is sucked into the suction duct l, the suction nozzle 11 is moved to the lower end position B by the drive of the drive cylinder 6.
to the upper end position A. Then, as shown in FIG. 4, the side opening 11a of the suction nozzle 11 is shifted from the communication hole 12a of the support tube 12 and is completely closed by the inner wall surface L2b of the support tube 12, and the shaft hole 9a of the pipe thread 9 is completely closed. While stopping the suction operation, the yarn end IO of the pipe yarn 9 is held between the side opening edge of the suction nozzle 11 and the inner wall surface 12b of the support tube 12. Thereafter, as shown in FIG. 5, the notching operation is performed by hooking the thread end 10 of the pipe thread 9, one end of which is held by the suction device, with a grip arm (not shown).

According to the above embodiment, after the nozzle body zb of the suction nozzle +1 is brought close to the upper end of the tube yarn 9 by driving the drive cylinder 6, the suction operation of the yarn end 10 of the tube yarn 9 is performed. , the nozzle body 11 of the suction nozzle 11
The gap between the lower opening 11d of the tube 9 and the upper end shaft hole 9a of the tube 9 is much smaller than before, the suction loss is smaller than the conventional one, and the suction efficiency is increased. In addition, the suction nozzle 11 moves downward relative to the tube yarn 9 and is located at the lower end position B only when suctioning, while when the magazine 3 rotates relative to the suction nozzle 11, the suction nozzle IH moves toward the tube yarn 9. Since it is raised and located at the upper end position A, when the magazine 3 rotates, the tube yarn 9 does not come into contact with the suction nozzle 11, and the suction nozzle 11 does not come into contact with the yarn of the tube yarn 9. Also, by driving the drive cylinder 6, the sucsigin nozzle 11
is lowered to suck the yarn end 10 in the shaft hole 9a of the tube 9 into the suction duct 1, and then the drive cylinder 6 is driven to raise the suction nozzle 11 to stop the suction operation. The thread end 10 is passed through the suction nozzle 11.
Since the yarn end 10 of the tube yarn 9 sucked into the suction duct l is held between the side opening 1'la of the suction duct l and the inner wall surface 12b of the support tube 12, the yarn end 10 of the pipe yarn 9 sucked into the suction duct l can be held securely with a simple structure. can be done. Also, the nozzle body of suction nozzle 11! - Since the lower surface tic of 1b is tilted, even if the tube thread 9 is tilted in the magazine can 4, the suction nozzle 1
The lower opening 11d of the nozzle main body 11b and the shaft hole 9a of the pipe thread 9 can be reliably communicated with each other.

Note that the present invention is not limited to the above embodiments,
It can be implemented in various other ways. For example, the upper part of the suction nozzle 11 is supported in the suction duct l so as to be movable up and down, and the side opening 11 provided in the upper side wall of the suction nozzle 11 is connected to the valve body provided in the suction duct 1.
a may be configured to open and close, thereby performing a suction operation on the shaft hole 9a of the pipe thread 9 and a clamping action on the yarn end lO of the pipe thread 9.

Effects of the Invention According to the above configuration, when suctioning the yarn end of the tube yarn, the lower opening of the suction nozzle descends and approaches the upper end of the tube yarn, and then the yarn end in the shaft hole of the tube yarn is sucked. Since the gap between the lower opening of the suction nozzle and the shaft hole of the tube thread is much smaller than before, suction loss can be extremely reduced with a simple structure. , the suction efficiency of the yarn end of the tube yarn increases. Further, when the suction nozzle is raised by the drive cylinder to close the suction opening of the suction nozzle and the opening of the suction duct,
The thread end of the pipe thread sucked into the opening of the suction duct is held between the valve body and the suction opening edge of the suction nozzle, so that the thread end of the pipe thread can be easily and reliably held. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a yarn end suction device for a tube yarn according to an embodiment of the present invention, and FIGS. 2 to 5 are longitudinal cross-sectional views of main parts showing states in which the yarn end of a tube yarn is sucked, respectively. FIG. 6 is a perspective view showing a conventional suction device for the end of a pipe, and FIGS. 7 to IO are longitudinal cross-sectional views of essential parts showing states in which the ends of the pipe are suctioned. l...Suction duct, la...Opening, 2...
Suction tube, 3...Magazine, 4...Magazine can, 5
...Micro switch, 6...Drive cylinder, 6a
...Piston rod, 7...Electromagnetic pulp, 8...
Driving cylinder driving air supply pipe, 9...pipe thread, 10.
... Thread end, 11... Sakunyon nozzle, 11a...
Side opening, 11b... Nozzle body, 11c... Lower surface, 11d... Lower opening, 11e... Side wall, 12...
・Support tube, 12a...Communication hole, J2b...Inner surface, 1
3... Bracket, 14... Woodwind.

Claims (2)

[Claims] (1) A tube that suctions the yarn end (10) in the shaft hole (9a) of the wood tube (14) of the tube yarn (9) in the magazine can (4) located at the suction position (B) of the magazine (3) In the thread end suction device, the pipe thread (9) in the magazine can (4) is movable up and down and the lower end opening (11d) is located at the suction position (B).
A cylindrical suction nozzle (1) facing the upper end shaft hole (9a) and further provided with a side opening (11a) at a predetermined position on the side wall.
1), a drive cylinder (6) that drives the suction nozzle (11) to approach or move away from the upper end of the tube yarn, and the side opening (11a) of the suction nozzle (11).
), a suction duct (1) that can communicate with Part opening (1
1a) and the suction duct (1), while closing the communication between the side opening (11a) of the suction nozzle (11) and the suction duct (1) when the suction nozzle (11) is raised. , suction duct (
1) a valve body (12b) that holds the yarn end (10) of the tube yarn (9) sucked into the suction nozzle (11) between the side opening edge of the suction nozzle (11); A suction device for the end of the pipe thread. (2) In the yarn end suction device for a pipe yarn according to claim 1, the peripheral edge (11c) of the lower opening (11b) of the suction nozzle (11) is arranged downwardly from the inside to the outside. A yarn end suction device for a tube yarn, which is characterized by being inclined.