JPS5947055B2 - Opening/closing valve for fluid injection looms - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an on-off valve for controlling pressurized fluid supplied to a weft insertion nozzle of a fluid injection type loom.

A known on-off valve of this type is disclosed in Japanese Patent Application Laid-Open No. 52-53062.

That is, this allows pressurized air to flow while the arcuate groove (elongated hole) 15 formed in the rotating sleeve 10 overlaps and communicates with the opening of the fixed lid 17.

However, in this device, in order to change the injection timing and injection period according to the yarn type and weave width, it is necessary to replace the sleeve 10 with a sleeve 10 having a different size of the arcuate groove 15, or to
0 installation requires changing the phase, which is troublesome, and replacement parts must be prepared, which requires space, is inefficient, and is uneconomical. was there.

The present invention has been made to solve the above-mentioned drawbacks.
It is an object of the present invention to provide an on-off valve for a fluid injection type loom in which the injection timing and injection period can be easily changed without replacing parts.

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

Reference numeral 1 denotes a cylindrical housing, which has an entrance side opening 2 and an exit side opening 3 formed therein.

A first flow control body 4 in the form of a disk is secured to the stage 1a of the housing 1.

A shaft 5 is rotatably inserted through the insertion hole 4a in the center of the control body 4, and a disk 6 is fixed to one end of the shaft 5.

This disk 6 has an arcuate hole 6a formed therein.

The middle part of the shaft 5 passes through the wall of the closed end of the housing 1,
It is supported by a bearing 7 provided in the penetrating portion.

A gear 8 is fixed to the outwardly projecting portion of the other end of the shaft 5.

This gear 8 rotates once for every revolution of the loom (
(not shown) is driven by gears.

9 is Patsukin.

A second flow rate control body 10 is arranged to sandwich the disk 6 in cooperation with the first flow rate control body 4.

This control body 10 includes a coil spring S that is loosely fitted into a protrusion 11a that protrudes inward from a lid 11 at the open end of the housing 1.
2, so that the disk 6 and the flow control bodies 4, 10 are brought into close contact with each other.

12 is a bolt for fixing the lid 11 to the housing 1;
13 is an O-ring for leak prevention.

The first and second flow control bodies 4 and 10 have disks 6
An arcuate hole 6a and a circular communication hole 4b on a circle with the same diameter.
.

10a is provided.

The tip of a pipe 15 connected to a pressure air supply source (not shown) is screwed into the opening 2, and the opening 2 opens into a space 16a on the right side of the control body 4.

A pipe 17 connected to a weft insertion nozzle (not shown) is screwed into the opening 3, and the opening 3 opens into a space 16b between the control body 10 and the lid 11.

Therefore, air from the pressurized air supply source first enters the space 16a.
It flows into the space 16b through the communication hole 4b, the arcuate hole 6a, and the communication hole 10a, and then flows out through the pipe 17 to the weft insertion nozzle.

There are two circumferentially long adjustment holes 18 and 19 on the peripheral wall of the housing 1.
Then, the operating rods 4c and 10b are respectively inserted and fixed to the control bodies 4 and 10, respectively, so that the control bodies 4 and 10 can be rotated about their axes from the outside.

Reference numeral 20 denotes a stopper, which has a holding hole 21 into which the operating rods 4c and 10b can be inserted, and a long hole 22.
It is fixed by screws 23 inserted into long holes 22 and screwed into the housing 1.

Next, the operation of the apparatus of the present invention constructed as described above will be explained.

First, as shown in FIGS. 1 and 2, when the control bodies 4, 10 and therefore the communication holes 4bt10a are in the same rotational phase, there is an injection period equal to the length of the arcuate hole 6a.

That is, in FIG. 4a, the fluid is ejected from the time when the end 6b of the arcuate hole 6a facing the rotation side faces the communication holes 4b and 10a until it is hidden by the end 6c of the arcuate hole 6a after the rotation.

To shorten this injection time, loosen the screw 23 of the stopper 20 that engages with the operating rod 4c so that the stopper 20 and the operating rod 4c can move freely, and then
The control body 4 is rotated in the direction of arrow A in FIG. 3, stopped at a predetermined rotational phase, and then fixed by tightening the screw 23.

Figure 4 shows this state.

In this way, the end 6b of the arcuate hole 6a can be connected to the flow hole 10.
Since the communication holes 10a and 4b do not communicate with each other until they reach the end of point a, no fluid is ejected.

Moreover, when the end 6c of the arcuate hole 6a comes off from the flow hole 4b,
After all, the fluid stops gushing out.

In this case, the fluid ejection period becomes shorter.

Moreover, when only the ejection timing of the fluid is to be changed, the control bodies 4 and 10 may be rotated by the same angle using the operating rods 4c and 10b.

In other words, if you turn it clockwise, the fluid can be ejected earlier during one rotation of the loom (if the i holes are in the same phase), and if you turn it counterclockwise, you can eject the fluid at a later time. It can be made to squirt.

As described above, according to the present invention, the ejection timing and ejection period of the fluid can be easily changed without replacing parts, so the on-off valve of the present invention is easy to change and is economically advantageous. There is an effect.

[Brief explanation of drawings]

Fig. 1 is a plan view of the device of the present invention, Fig. 2 is a sectional view taken along the line X-X, Fig. 3 is an exploded perspective view of the internal structure, and Figs. FIG. 3 is an explanatory diagram showing related positions. DESCRIPTION OF SYMBOLS 1... Housing, 4... First flow control body, 4b... Distribution hole, 5... Shaft, 6...
... Disc, 6a ... Arc-shaped hole, 10 ...
...Second flow rate control body, 10a... Distribution hole, 11... Lid.

Claims (1)

[Claims] 1 A pair of disc-shaped flow control bodies each having a flow hole,
These flow rate control bodies are arranged in a housing having a cylindrical inner surface, and can be fixed to the housing while changing the phase of each body, and a disk rotating in synchronization with the loom is placed between the pair of flow rate control bodies. The disc is provided with an arc-shaped hole corresponding to the flow hole of the flow rate control body, and the injection timing and time are changed by changing the phase of the pair of flow rate control bodies. An on-off valve for a fluid injection loom, which is characterized by: