JPH0435431Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an operating device for use in inching or manually reversing a loom equipped with a tuck-in selvedge device.

<Conventional technology> Conventionally, fragment looms have been
As seen in Japanese Patent No. 2481, etc., a tuck-in selvage assembly device is used which has a tuck-in needle that swings to capture the end of the beaten weft, fold it back, and insert it into the next warp opening.

By the way, when the tuck-in needle comes out of the warp row, the warp shedding is extremely small, so if the loom is reversed by inching or manually, the tuck-in needle will come out of the warp row with a small shedding. At this time, the tuck-in needle may be inserted further below the bobbin thread, which is inconvenient.

Therefore, in the device described in the above-mentioned publication, a clutch is interposed in the drive system of the tuck-in selvedge assembly device, so that the tuck-in needle can be held in a non-operating state when the loom is reversed.

<Problems to be solved by the invention> However, a relatively large torque is required to drive the device, which necessitates the use of a tooth clutch or other clutch with a large amount of engagement, which requires a large-scale drive system and requires the use of tuck-in ears. If the phases of the assembly device are shifted, there is a problem that it is difficult to match the phases during normal rotation.

In view of these conventional problems, it is an object of the present invention to make it possible to avoid the adverse effect on the warp yarns caused by the tuck-in needles when the loom is reversed, without using a clutch.

<Means for Solving the Problems> For this reason, the present invention provides a warp deflection method that deviates the warp rows from the moving path of the tuck-in needles at least within the movement range of the tuck-in needles when the loom is reversed. The device is equipped with a positioning device.

<Function> In other words, when the loom is reversed by inching or manually, the warp row is deflected by the warp deflection device so that it deviates from the movement path of the tuck-in needle, and even if the tuck-in needle operates, the warp row is This prevents them from entering the inside, thereby avoiding any negative impact on the warp threads.

<Example> An embodiment of the present invention will be described below.

3 and 4 show a tuck-in selvage assembly device on the weft insertion side.

Reference numeral 1 denotes a gearbox which constitutes the main body of the selvedge assembly device, in which rotation of the main shaft of the loom is transmitted to an input shaft 4 via a toothed belt 2 and a toothed pulley 3, and the rotation is internally converted into various motions. This gear box 1
is fixed via a mounting base 5. 6 is the warp, 7 is the woven fabric, and 8 is the woven fabric.

Reference numeral 10 denotes a tuck-in needle, which is the tip of an arm 13 which is secured by a bolt 12 to one end of an actuating rod 11 that protrudes from the rear surface of the gear box 1 and swings back and forth in the axial direction (reciprocating angular movement). It is fixed to the section with bolts 14. The weft is curved as a whole and has a hook portion 10a at its tip, which catches the end of the beaten and cut weft and inserts it into the next warp opening.

Reference numeral 20 denotes an air nozzle type yarn holder that pulls and holds the end of the weft yarn under tension until it is caught by the tuck-in needle 10, and is connected to a lever 21 to be described later.
L-shaped hollow member 25 fixed by bolt 24 to bracket 23 fixed by bolt 22 to
and a pipe-shaped air nozzle 26 protruding downward from the tip of the hollow member 25, and a cutout 27 formed on the rear circumferential surface of the air nozzle 26 is used as a cutter 30, which will be described later. It is located approximately on the warp line behind the weave 7 between the two. Then, a flexible air supply pipe 28 from a pressure air supply source (not shown) is connected to the hollow member 25 and positioned above the notch 27 in the air nozzle 26 as shown in FIGS. 5 and 6. An air outlet 29 communicating with the inside of the hollow member 25 is provided downward.

A scissor-type cutter 30 includes a fixed blade 31 and a movable blade 32, and cuts the edge of the beaten weft. 31a is a tip of the fixed blade 31, and 32 is a tip of the movable blade 32.

Here, the fixed blade 31 is fixed to the side surface of the cutter support 33. The cutter support 33 has a fitting part 33, which is slidably fitted into a dovetail groove 36 formed on the rear surface of the bracket 35 and fixed with a bolt 37. The insertion hole for this bolt 37 is the elongated hole 3.
8, so that the mounting position of the cutter support 33 can be adjusted with respect to the bracket 35 in the width direction of the loom. Further, the bracket 35 is fixed to the side surface of the gear box 1 by a bolt 39, and the hole through which the bolt 39 is inserted is also a long hole 40, so that the mounting position of the cutter support 33 together with the bracket 35 can be adjusted in the front-rear direction of the loom. It is as follows.

The movable blade 32 is rotatably supported within a cutter support 33 and is attached to the end of a shaft 41 that protrudes through a fixed portion of the fixed blade 31. One end of an adjustment rod 44 is rotatably fitted into a boss 43 fixed to an arm 42 integral with the movable blade 32, and is prevented from coming off by a washer 45 and a nut 46. A threaded portion 44a at the other end of the adjustment rod 44 is screwed into one end of a link 47, and is prevented from coming off with a lock nut 48.
The other end of the link 47 is rotatably connected to a pin 50 protruding from a lever 49, which will be described later.

Reference numeral 52 denotes a weft guide, which is fixed to the cutter support 33 so as to be located side by side with the cutter 30 on the side of the fabric selvedge, and has an inclined guide portion 5 on its upper edge.
2a and a locking recess 52b, the weft thread guided along the inclined guide part 52a during the beating process is locked in the locking recess 52b, and is an air flow acting area of the air nozzle type yarn holder 20. Inside the notch 27 and the cutter 30
position within the opening.

The levers 21 and 49 are rotatably attached to a common fixed shaft 54 projecting from the bracket 35. These levers 21 and 49 are biased by springs 55 and 56, respectively, to bring the cam followers 57 and 58 mounted in the middle into contact with cams 61 and 62 mounted on the rotating shaft 60 that protrudes from the gearbox 1 and rotates. There is.

Next, the operation of the tuck-in ear assembly device will be explained.
In addition, FIG. 7 shows the movement locus of the tuck-in needle 10, and FIG. 8 shows the tuck-in needle 10,
The operation timing of the air nozzle type yarn holder 20, cutter 30, etc. is shown.

After the weft is inserted, when the reed is beaten by the advance of the reed, the weft moves along the inclined guide portion 52a at the weft guide 52 and finally reaches the locking recess 52b.
It enters and locks, and remains in this position even when the reed is moved backwards. In this state, the weft stretched between the selvedge and the weft guide 52 is located within the opening of the cutter 30 and within the notch 27 of the air nozzle 26 (the state shown in FIG. 6A).

Immediately after the beating, the lever 4 is moved by the cam 62.
9. The movable blade 32 of the cutter 30 is driven via the link 47, the adjustment rod 44, etc., and the fixed blade 31
The weft yarn is cut in cooperation with the

At this time, the weft yarn between the weave selvage and the cutter 30 is already located within the notch 27 which is the air flow action area of the air nozzle 26, so when the weft yarn is cut by the cutter 30, the cut fabric The weft end on the ear side is connected to the air outlet 29 in the air nozzle 26.
Due to the action of the air jet from the air jet and the suction air flow generated around it, the air is sucked into the air nozzle 26 from the notch 27, and is pulled and held by the air flow (Fig. 6B
condition). This state of pulling and holding continues until the weft is delivered to the tuck-in needle 10 after the next weft insertion, but since the weft is pulled and held by the air flow, no slack occurs.

Next, the next weft thread is inserted and the reeding process begins, during which time the tack-in needle 10 first moves to the rear of the loom (to the left in Figure 3) and then counterclockwise in Figure 4. In the middle of the swing, the upper warp threads 6 are pushed aside and the warp threads 6 enter the opening and reach the outside of the end of the warp threads 6 as they are.

Thereafter, the tuck-in needle 10 is moved to the front of the loom (to the right in Figure 3), and the selvedge and yarn holder 20 are moved to the front of the loom (to the right in Figure 3).
It passes under the weft end stretched between.

After that, the tact-in needle 10 is further moved to the fourth position.
Swings counterclockwise in the figure.

Thereafter, the touch-in needle 10 starts to swing in the opposite direction, that is, clockwise in FIG. 4, but at this time, the cam 61 drives the lever 21 counterclockwise in FIG. The yarn holder 20 that is currently in place moves substantially downward and presses the weft end stretched between the weaving selvedge and the yarn holder 20 toward the tuck-in needle 10 side. As a result, when the tuck-in needle 10 swings in the opposite direction, the weft is reliably caught on the hook portion 10a and captured, and the tuck-in needle 10 returns to the warp opening in the caught state, thereby causing the weft end The section is folded back and inserted into the warp opening in the opposite phase to the section that has already been woven as a woven fabric. Then, the tack-in needle 10 escapes from the warp opening by pushing through the upper warp threads 6, and then also escapes from the reed beating path of the reed.

When the inserted weft is beaten by the advance of the reed, the weft end which has been folded back and inserted into the warp opening as described above is beaten at the same time at the selvedge part, and the weft is tacked in. Ears are formed.

In such a tuck-in selvedge assembly device, the tuck-in needle 10 enters the warp row at point I in the timing chart of FIG. 10 will enter the warp row.

Therefore, a warp deflection device 70 as shown in FIGS. 1 and 2 is provided.

In FIGS. 1 and 2, 71 is a temple roller, and 72 is a temple cover. A pair of protrusions 73 and 74 are provided on the temple cover 72,
A shaft 75 is fixed between these protrusions 73 and 74. A rocking body 76 is rotatably attached to the shaft 75, and an engaging piece 77 is attached to the rocking body 76 by a bolt 78.
This engaging piece 77 is made to face the woven fabric 8 in the vicinity of the woven fabric 7. An output rod 80 of an air cylinder 79 is connected to a link 81 to the swinging body 76.
are connected via. Furthermore, 82 is a reed. Further, T in FIG. 2 indicates the plunge point of the tuck-in needle 10.

To explain the operation, when the loom rotates forward, the air cylinder 79 is inactive and the output rod 80 is retracted by the built-in spring, and the oscillator 75 is rotated clockwise in FIG. is away from the woven fabric 8 or is in slight contact with it (as shown by the solid line in the figure).
Therefore, the six rows of warp threads are in their normal positions.

On the other hand, when the loom is inched or manually reversed, the air cylinder 79 is operated in conjunction with the reverse reference operation or by a manual switch, etc.
The output rod 80 is made to protrude. This results in
The rocking body 75 rotates counterclockwise in FIG.
Six rows of warp threads are deflected downward as shown by the chain lines in the figure. Therefore, even if the tuck-in needle 10 operates, it will not enter into the six warp rows.

Note that the warp deflection device may be a device that moves the temple cover 76, or may be a device that moves the entire temple.

Furthermore, although this embodiment has shown a tuck-in selvage assembly device and a warp deflection device on the weft insertion side, it goes without saying that devices on the opposite weft insertion side or for the middle selp can be constructed in the same manner.

<Effects of the invention> As explained above, according to the invention, it is possible to prevent the tuck-in needle from entering the warp row with a small opening amount when the loom is reversed, and this can be achieved without using a clutch. This provides the advantage that phase alignment and the like upon restarting are no longer necessary.

[Brief explanation of drawings]

Fig. 1 is a side view of a warp deflection device showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the tuck-in selvedge assembly device, and Fig. 4 is a view from the rear of the loom. 5 is an enlarged side view of the air nozzle type thread holder, FIG. 6 is a cross-sectional view of FIG. 5, FIG. 7 is a schematic plan view showing the movement locus of the tuck-in needle, and FIG. The figure is a diagram showing the operation timing of a tuck-in needle, etc. 1... Gear box, 10... Tuck-in needle, 20... Air nozzle type thread holder, 26...
Air nozzle, 27... Notch, 29... Air spout, 30... Cutter, 52... Weft guide, 70
... Warp deflection device, 71 ... Temple roller, 7
2... Temple cover, 76... Rocking body, 77...
...Engagement piece, 79...Air cylinder.

Claims (1)

[Scope of utility model registration request] In a loom equipped with a tuck-in selvedge assembly device having a tuck-in needle 10 that swings so as to catch the end of the beaten weft, fold it back, and insert it into the next warp opening, at least the tuck-in needle 10 swings when the loom is reversed. An operating device for a loom, characterized in that a warp deflection device 70 is provided for deflecting six warp threads so as to deviate from the movement path of a tuck-in needle within a movement range of the loom.