JPS5848385Y2 - Fluid supply device for shuttleless looms - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fluid supply device that supplies fluid to necessary locations in a shuttleless loom to prevent fluff.

In a loom, a large amount of fluff is scattered and deposited on various parts of the loom.

However, in the case of shuttleless looms, due to the problem with the weft insertion function that the weft is inserted piecemeal, generally a predetermined tension is applied to the weft fed from a fixed weft supply section at the side of the machine. a weft storage section configured to store a predetermined amount of weft; a gripper disposed in the weft path from the weft storage section to the weft insertion means; and a weft storage section installed at the weft end for each weft insertion. There are cutters and the like that cut the paper, and if the fluff builds up on these, many problems will occur.

For example, in the case of the tensor or gripper,
When fluff adheres to the weft, the pressing force or clamping force of the weft becomes weak, making it impossible to apply a specified tension or damping the weft. Furthermore, when a lump of fluff adheres to the weft, it causes the weft to accumulate. There is a problem in that when a fluid jet nozzle is used, the nozzle becomes clogged, or when a jet loom is used, the weft jet nozzle becomes clogged, making the weft storage function or weft insertion function impossible.

In addition, if the accumulated fluff adheres to the weft in the weft storage section, it will be carried to the following gripper and adhere there, weakening the gripping force of the gripper, and the fluff that does not adhere to the gripper will be removed from the jet loom. This can cause the weft jet nozzle to become clogged, making the weft insertion function impossible.

In addition, in the case of the above-mentioned cutter, the number of operations is extremely large, as the weft must be cut every time the weft is inserted.
Since a reliable cutting function is required for cutting, if the cutting function is deteriorated due to adhesion or accumulation of fluff, it will cause the weft insertion function to become impossible.

Furthermore, in each location that requires measures against air fluff,
For example, when removing fluff from the gripper, it is necessary to do it while the gripper is releasing the weft yarn, and conversely, when removing fluff from the weft storage area, it is necessary to remove the fluff during weft insertion. When jetting, it creates a large resistance against the weft yarn, so it is necessary to remove fluff at all locations while the weft yarn is being stored, that is, while the gripper is holding the weft yarn. If this is to be done, the timing must be contradictory in terms of the weft insertion function.

This invention uses the contact and separation movements of the gripper to determine the timing of fluid injection for fluff removal, and sprays the fluid at the necessary timing to perform fluff removal work and other operations at all locations. This is what I did.

Hereinafter, the present invention will be explained based on an embodiment of the illustrated jet loom.

A weft supply section 1 is fixedly provided on the side of the machine base.
The weft yarn Y that is let out from the guide roller 4 passes through the tensor 3 to which a predetermined tension is applied. It reaches a length measurement feeding section consisting of a length measurement roller 5 and a drive roller 6.

The weft yarn Y whose length is measured here and is let out is stored in a substantially U-shape on a storage plate 10 by a storage fluid injection device 9 connected to a pressure fluid source 7 via a pipe 8, and the drawn-out side stick yarn Y2 is The yarn passes through the weft nipping section of the gripper 12 driven by the guide 11 and the cam 13, reaches the weft injection nozzle 16 connected to the pressure fluid source 7 via a pipe 14 and a valve 15, and is inserted at a predetermined time. Ru.

A cutter 17 is disposed at the end of the woven fabric W and is appropriately driven to cut the inserted weft each time the weft is inserted.

Note that 18 is a lead.

The gripper 12 has a structure as shown in FIGS. 2 and 3.

That is, the lower end of the T-shaped main body 20 is fixed to the frame 19 with a screw 22 via a washer 21.

A fixed clamping member 23 is placed on the upper surface of the main body 20 with a rubber ring 24 interposed therebetween and is fixed by a screw member 25.

On the other hand, a rod 26 slidably penetrates approximately the center of the main body 20, and a movable clamping member 27 is attached to the upper end of the rod 26 to hold the rubber ring 26.
8 and is fixed by a nut 29, and together with the fixed clamping member 23, forms a weft clamping part.

The rod 26 is urged downward by a spring 31 interposed between a nut 30 at the lower end and the lower surface of the main body 20, and the lowermost surface 32 comes into contact with the driving cam 13 shown in FIG. be moved up.

Further, the rod 26 has a small diameter portion 33 near the central part thereof, and a fluid passage space 34 is formed between the rod 26 and the inner circumferential surface of the main body 20 .

Furthermore, a fluid supply port 36 and two fluid discharge ports 37 and 38 connected to the pressure fluid source 7 through a pipe 35 are provided on the main body 20 side.

The fluid supply port 36 is connected to the fluid passage space 3 through the through hole 39.
4, while the one fluid outlet 37 is connected to the fluid passage through the through hole 40 when the movable clamping member 27 is raised to release the weft as shown in FIG. The other fluid discharge port 38 is connected to the fluid passage space 34 through the through hole 41 when the movable clamping part 27 is lowered to clamp the weft as shown in FIG. The grippers 12 are arranged in such a manner that the movement of the grippers 12 toward and away from each other performs a fluid supply switching action.

One fluid outlet 37 of the gripper 12 is connected to a distributor 43 via a pipe 42.

The distributor 43 is connected via a pipe 44 to a nozzle 45 disposed within the guide 11 to remove the tilt of the gripper 12.

It is also connected to a nozzle 47 via a pipe 46 to remove fluff from the tensor 3, and further connected to a nozzle 49 via a pipe 48 to remove fluff from the cutter 17.

The other fluid discharge port 38 is directly connected to the nozzle 51 via the pipe 50, and is connected directly to the nozzle 51 through the pipe 50, and is connected to the drawer side rod Y2 on the storage plate 10.
By injecting fluid against the weft, the fluff on or near the storage plate 10 is removed, and the payout side bar yarn Y1, which is generated when the drawer side bar Y2 is in a tensionless state during weft storage, is removed. It is possible to prevent the phenomenon of twisting between the parts.

In the above configuration, the length of the weft Y fed out from the fixed weft supply section 1 is measured and fed out by the length measuring roller 5 while being applied with a predetermined tension by the tensor 3.
After being stored on the storage plate 10, the force id 11. It passes through the gripper 12 and reaches the weft injection nozzle 2/16.

While the weft is being held by the gripper 12 during operation of the loom, the weft is stored on the storage plate 10. When a predetermined amount is reached, the gripper 12 releases the weft, and at the same time, the weft is released by the weft injection nozzle 16. An entry is made.

When the weft insertion is completed, the gripper 12 grips the weft yarn again, and the weft yarn is stored.

When the gripper 12 grips the weft yarn, the rod 26 is in a downwardly moving state as shown in FIG. Fluid is injected to the drawn-out side bar yarn Y2 that is being stored to remove fluff and remove the same weft yarn Y2.
A predetermined tension can be applied to 2.

When the storage of the weft reaches a predetermined amount, the gripper 12 moves the rod 26 upward to release the weft, as shown in FIG. 2, in order to insert the weft.

Therefore, one fluid outlet 37 communicates with the fluid passage space 34, fluid is injected from the nozzle 45 to the weft nipping part of the gripper 12 via the distributor 43, and the fluid is injected from the nozzle 47 and 49 to the tensor 3 and the weft thread holding part of the gripper 12, respectively. It is sprayed onto the cutter 17 to perform fluff removal work.

In this way, during operation of the loom, fluid is injected intermittently at necessary locations in synchronization with the weaving movement.

Note that the fluff removal work for the tensor 3 and cutter 17 does not need to be timed in particular, so it is also possible to connect the pipes 46 and 48 to the other discharge port 38 via a distributor. .

However, as shown in the timing diagram in Figure 4,
Comparing the weft opening time and the weft clamping time of the gripper, the weft opening time is extremely short, so fluid is supplied to the tensor 3 and cutter 17 from one fluid outlet 37 as in the above embodiment. However, it is effective in terms of power consumption.

In addition, for the structure of the weft storage section, it is also possible to use a storage tube with slits instead of the storage plate 10.

As described above, the present invention has a gripper which is arranged in the weft path leading to the weft insertion means and which performs the action of holding and releasing the weft, and is provided with a fluid supply port and two fluid discharge ports, respectively. By configuring the gripper to supply fluid to only one of the fluid discharge ports by approaching and separating the gripper, the fluid can be sprayed at all locations with different fluid spray timings, making it possible to perform fluff removal work and other operations. Moreover, it is effective in terms of power consumption because the fluid can be injected intermittently.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a schematic perspective view showing an embodiment of the invention, Fig. 2 is a sectional view of the gripper when releasing the weft, and Fig. 3 is a sectional view of the gripper when the weft is being held. A cross-sectional view of the gripper, FIG. 4 is a timing diagram of the gripper. DESCRIPTION OF SYMBOLS 1: Fixed weft supply section, 12 nigeripper - 123: Fixed clamping member, 27: Movable clamping member, 34: Fluid passage space, 3
6: Fluid supply port, 37: Fluid discharge port, 38: Fluid discharge port.

Claims (1)

[Scope of utility model registration request] In a shuttleless loom, the gripper is provided with a gripper disposed in a path leading to a weft inserting means for weft fed from a fixed weft supply section, and the gripper has a fixed gripping member and a movable gripping member for the weft. The fluid supply port and the two
one fluid outlet is provided with two fluid outlets, one of which is connected to the gripper
The gripper communicates with the fluid supply port only when the weft thread is released, and the other fluid discharge port communicates with the fluid supply port only when the gripper grips the weft thread. A fluid supply device characterized in that it is connected to a required predetermined fluid injection nozzle.