JPS6220467Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a weft length measuring device for a fluid jet loom.

Prior Art There are various drum-type weft length measuring devices that continuously wind the weft supplied from the yarn supply bobbin in a coil around the circumference of the weft storage drum and pull out the wound weft at the time of weft insertion. Are known. As shown in FIG. 1, for example, this type of weft length measuring device has a bracket 2 fixed to a frame 1 located on the side of the loom bed of a loom, and a support arm 3 fixed to the bracket 2, which supports the shaft. Thread hole in the heart 4
A rotary support shaft 5 equipped with a weaving operation is rotatably supported via a bearing 6, and is rotated by a timing belt 8 driven in synchronization with the weaving operation via a toothed pulley 7 fixed to the rotary support shaft 5. It is becoming more and more like this. A weft storage drum 10 is attached to the tip shaft portion 9 of the rotary support shaft 5 by a bearing (not shown) and a bracket 12 rotatably supported via a bearing 11. It is supported for relative rotation. Gears 2a and 12a as sun gears are integrally formed on the brackets 2 and 12, and a horizontally long support body 13 is fixed to the intermediate portion of the rotation support shaft 5.
The storage drum 10 is configured to mesh with a planetary gear mechanism (not shown) provided in the storage drum 10 so that the storage drum 10 is held stationary even when the rotation support shaft 5 rotates. Therefore, when the rotational support shaft 5 is rotated via the timing belt 8 and the toothed pulley 7, the tip of the thread winding tube 14 fitted to the support body so as to communicate with the thread guide hole 4 is connected to the storage drum 10. The weft yarn is supplied from a yarn supply bobbin (not shown) and is wound around the storage drum 10.
A cam mechanism (not shown) provided in the storage drum 10 is used to alternately appear and retract once on the circumferential surface of the storage drum 10 between one weft insertion and the next weft insertion. The winding amount of the weft yarn and the unwinding of the wound weft yarn are controlled by the control pins 15 and 16.

In this type of drum-type weft length measuring device, a plurality of guides are provided on the lower side of the storage drum 10 in order to make it possible to change the amount of weft storage in response to changes in the weaving width, that is, the weft insertion length. A flange 18 having a groove 17 is integrally provided, and a storage amount adjusting rod 19 is attached so as to be movable along the guide groove 17. This conventional adjusting rod 19 has one end inserted into an insertion hole 20 provided in the storage drum 10 and fixed with a push screw 21, and the other end having a flange portion 19a inserted into the guide groove 17 and fixed with a nut 22. was. If the adjustment rod 19 is not tightened and fixed with the nut 22 but fixed only with the set screw 21, the adjustment rod 19 will wobble, leading to a length measurement error, so it is essential to fix it on the flange 18 side. Therefore, when changing the storage amount, it is necessary to move and adjust both ends of the adjustment rod 19.
This made it complicated to adjust the storage amount, which required fine adjustment. Particularly when adjusting the flange 18 side, cover 23 covering rotating parts such as thread-wrapped tube 14 is used.
This got in the way and made the work more complicated. Also, there is a method of using a magnet instead of a planetary gear mechanism as a means of keeping the storage drum 10 stationary, but in that case, an iron plate is located on the back side of the storage drum 10, so this iron plate may get in the way of adjustment work. Summer.

Purpose This invention was made in order to eliminate the defects of the conventional device, and its purpose is to be able to continuously adjust the weft storage amount in response to changes in the weft insertion length (weaving width). It is an object of the present invention to provide a weft length measuring device for a fluid injection type loom that can be extremely easily operated.

Example Hereinafter, an example that embodies this idea will be described in the third to
This will be explained according to FIG. The weft length measuring device of this embodiment has the same structure as the conventional device except for the part for changing and adjusting the weft storage amount, and the same parts are designated by the same reference numerals. A flange 18 is integrally formed on the lower side of the storage drum 10 constituting the thread winding surface, and a guide groove 17 is formed in the flange 18 and extends in a radial direction around the rotation center of the thread winding tube 14. There is. Each guide groove 17 has an adjustment pin 24 that forms a part of the thread winding surface and is used to adjust the amount of weft storage. It is fixed via a stopper piece 25 so as to be movable and adjustable along the guide groove 17. The adjustment pin 24 includes a thread engaging portion 26 having an inclined portion 26a and a guiding portion 26b having shapes corresponding to the inclined portion 10a and the substantially horizontal guiding portion 10b of the storage drum 10, and a screw protruding from the base end side. 2
7, and the screw 27 thereof is screwed together so as to pass through the locking piece 25, so that the distance between the locking piece 25 and the base end surface of the adjustment pin 24 can be adjusted.

Next, the operation of the weft length measuring device configured as described above will be explained. Since the adjustment pin 24 is formed with an inclined part 26a and a guide part 26b corresponding to the inclined part 10a and the guide part 10b of the storage drum 10,
Even when the fixing position of the adjustment pin 24 changes, the weft can be smoothly wound and unwinded.

When changing the storage amount according to a change in weft insertion length (woven width), turn the adjustment pin 24 to release the tightening fixation, and then remove the adjustment pin 2 together with the locking piece 25.
4 to a predetermined position, and at that position, turn the adjustment pin 24 to tighten and fix it. Therefore, unlike the conventional device, the cover 23 does not interfere with the adjustment work for changing the storage amount.

Note that this invention is not limited to the above-described embodiment, and for example, the locking piece 25 may have a fitting protrusion 25a.
Instead of forming the locking piece 25, the overall shape of the locking piece 25 is formed into a rectangular column shape in which the width a of the side surface on the adjustment pin 24 side is narrower than the width b of the guide groove 17, as shown in FIG. 7, and the locking piece 25 is fixed by a wedge effect. or screw 2
Instead of protruding from the adjustment pin 24, a screw 27 may be provided on the locking piece 25 as shown in FIG. Instead of 18, a large number of support parts 2 are formed with guide grooves 17 as shown in FIG.
9 or a scale corresponding to the storage amount may be provided along the guide groove 17. Furthermore, storage drum 1
0, all the thread winding surfaces can be made up of only the adjustment pins 24 without configuring the thread winding surfaces, or the thread winding tube 14 side can be held stationary and the storage drum 10 side, that is, the thread winding surface side can be It is also possible to arbitrarily change the shape, structure, etc. of each part without departing from the spirit of this invention, such as configuring the weft yarn to be wound by rotation.

Effects As detailed above, this invention provides a support portion in which a guide groove is formed on the side of the bobbin winding surface on the bobbin winding side, and has an inclined portion to form at least a part of the bobbin winding surface. A locking piece that engages with the guide groove is attached to the proximal end surface side of the adjustment pin in which the thread engagement portion is formed so that the distance from the proximal end surface of the adjustment pin can be adjusted using a screw, and the adjustment pin is attached to the proximal end surface of the adjustment pin in the guide groove. By making it movable and adjustable along the weft, it is possible to continuously change the weft storage amount in response to changes in weft insertion length (weaving width), and unlike conventional devices, a guide groove is formed. Since there is no need to work on the back side of the support part, the position of the adjustment pin can be adjusted extremely easily in a wide area without being obstructed by a cover that covers the rotating part of the thread-wrapped tube, etc. be effective. Note that if the weft is wound by keeping the yarn winding tube stationary and rotating the storage drum side, there is no cover.
Due to the narrow distance between the drive belt for rotating the storage drum and the support, it is very inconvenient to work behind the support, but the device of this invention does not have such inconvenience at all.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a conventional weft length measuring device, Fig. 2 is a front view of the same, and Fig. 3 is a partially cutaway side view showing an embodiment of this invention; 4 is a front view, FIG. 5 is an enlarged sectional view of the main part, FIG. 6 is a perspective view of the main part, FIG. 7 is a perspective view of the main part of the modified example, and FIG. 8 is a sectional view of the main part of the modified example. FIG. 9 is a front view showing a support section of a modified example. Weft storage drum 10, yarn winding tube 14, guide groove 17, flange 18, cover 23, adjustment pin 2
4, locking piece 25, thread engaging portion 26, screw 27.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Weft yarn continuously supplied from a yarn supply bobbin is wound around a circumferential yarn winding surface in a coil shape, the length of the required amount of weft yarn is measured, and the weft yarn is wound up. In a weft length measuring device for a fluid jet loom, which inserts the weft while unwinding the weft, a support portion in which a guide groove is formed is provided on the side of the bobbin winding side of the bobbin winding surface. A locking piece that engages with the guide groove is connected to the base end surface of the adjustment pin by a screw on the proximal end surface side of the adjustment pin, which has a thread engaging portion having an inclined portion, so as to form at least a part of the thread engagement portion. 1. A weft length measuring device for a fluid jet loom, characterized in that the distance is adjustable, and the adjustment pin is movable and adjustable along the guide groove. 2. The support portion is a flange portion formed integrally with a peripheral wall surface portion of the storage drum constituting the thread winding surface, and the guide groove extends in a radial direction centered on the center of the thread winding surface. A weft length measuring device for a fluid jet loom according to claim 1, characterized in that the device is formed of: