JPS60134049A - Weft yarn length measuring apparatus in loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention Technical Field The present invention relates to a weaving method in which a weft supplied from a weft supply section is wound onto a winding surface, and the weft is pulled out at the time of weft insertion. This is related to shield mounting.

BACKGROUND OF THE INVENTION In general, fluid jet looms are equipped with a weft length measuring device U for measuring a predetermined amount of weft yarns in advance and storing the measured weft yarns for one day. The weft length measuring device of this scale measures the length of the weft that is supplied from the weft supply section through the opening at the end of the winding tube that rotates around the drum relatively, and also measures the length of the weft by winding it around the drum. - [] A weft length measuring device is adopted which stores the weft yarn in a wound manner and pulls out the stored weft yarn during weft insertion.

In this winding type length measuring device, the body is placed on the weft body 1 disposed on the inside or outside of the yarn winding surface of the drum, and intersects with the yarn winding surface in synchronization with the weft insertion timing. By this, the measured length ω of the weft wound on the drum and the transition in the weft withdrawal direction are controlled. The length measurement 111 of the weft wound on the drum and the control of the transition to the weft pull-out direction are particularly small in fluid-sounding weaving, which requires accurate tightening timing, and this Q-evil can cause errors in insertion. Alternatively, adjust the fabric quality to f8.

Conventionally, the weft yarn wound around the drum is caused to slide on the tapered circumferential surface of the drum due to the winding tension and is moved in the drawing direction. For example, a pair of 11 weft threaders appear from the same part of the drum's tapered circumferential surface! ;b@ In the length measuring device, the weft fed out from the bobbin (; 1
The weft thread catcher 11 is immersed in the drum and rolled up. The weft thread is slid in the drawing direction and transferred 1' and is locked by the second weft thread catcher. The weft body is immersed in the drum and the thread is pulled out from the drum. The wrapped weft may jump over the previous wrapped weft and get entangled, or the wrapped threads may stick together (as a result, the weft unwinding resistance increases due to the fluff of the thread, and there is a risk that the state of the thread will become unstable). In order to eliminate this J: burr defect, wind the weft at intervals and eliminate the close winding of the wrapped weft.
However, in the past, this close-contact winding protection 11- was only performed by adjusting the slope of the tapered circumferential surface of the drum, and with this method, a sufficient close-contact winding protection effect was obtained. Therefore, it is important for diplomatic relations to respond to the recent increase in the speed of looms.

Purpose The present invention has been made in consideration of the above-mentioned problems, and its purpose is to solve the above problem without regard to the unwinding resistance (of J yarn type) or the unwinding resistance of cheese etc. to the yarn supply section. Wrap the weft yarn on the yarn winding surface at intervals (stabilize the J1 poem case and li
The object of the present invention is to provide a weft length measuring device for a loom.

Structure In order to achieve the above-mentioned objective 1-1, in the present invention, the bobbin f
A configuration is adopted in which a screw-shaped guide member that rotates at least once per R rotation is provided on the inner side of the bobbin winding surface where the threaded portion of the guide member can engage with the weft.

Embodiment Below, an embodiment embodying the present invention will be explained based on FIG. 1.2. Support brackets 1 and 2 are fixed to the upper end of a side frame 1 of a loom, and A rotary support shaft 3 is rotatably mounted through the shaft. The support shaft 3 is provided with a weft guide hole 3a along the axis of which guides the weft Y supplied from a thread supply unit (not shown) for threads such as cheese. iJ, the timing pulley 4 is fixed on the end side (,1,
Timing bells l to 5 are hung on the pulley 4. The belt 5 is driven in synchronization with the rotation of the machine, and rotates the rotation support shaft 3! It is something that A line winding tube 6 is attached to the rotary support shaft 3 in the vicinity of the support bracket 2 so that the line winding tube 6 communicates with the weft guide hole 3a, and its tip is opened near the N1 side of the line winding hole described later. ing.

A disk-shaped support plate 7 is provided on the tip side of the rotation support shaft 3 so as to be rotatable relative to the rotation support shaft 3.
On the front surface of one end, a bar 1 to a lug-h bar 8 is installed, and a threaded guide member 9 is also rotatably supported in parallel with the rotation support shaft 3. The guide member 9 is accommodated and disposed within the lug cover 8 that extends to the right of the inclined surface 8a and the horizontal surface 8b, and the screw thread 9b of the threaded portion 9a projects slightly upward from the horizontal surface 8h. The screw-shaped guide member 9 has a timing pulley 10' provided at the top end of the threaded guide member 9, and a timing pulley 10' provided at the top end of the rotation support shaft 3, respectively.
The rotational driving force is 117 from the rotary support shaft 3 through the timing bells 1 to 12 mounted on both pulleys 11 and 1i, and in this embodiment, the rotational driving force is 117 per rotation of the rotary support shaft 3. It is designed to rotate once. When the screw-shaped guide member 9 is rotated with the rotation of the rotation support shaft 3, the screw threads 91) sequentially exposed on the horizontal surface 811 move to the right side in the weft drawing direction in FIG. Move relatively. 1. It's turning into a sea urchin.

A plurality of arc-shaped adjustment tables 14 (3-7 in this embodiment) are provided on the front surface of the peripheral edge of the support 4ff near 0, and each adjustment table 14 has a striped arc-shaped quality measuring band 13 fixed thereto.
(As shown in FIG. 2, it is provided along the radial direction of the support plate 7.) It is provided along the stepped guide plate 78 so that its position can be adjusted by screws 15 and nuts 1 to 16. The length measuring band 13 is provided with an inclined surface 13a and a horizontal surface 131), which together with the inclined surface 8a and horizontal surface 81) of the top cover 8 form one surface of the pincushion.

A cover 17 that covers the bobbin II tube 6 is fixed to the front side of the support bracket 2, and a pair of magnets 18 that are attracted to each other are installed opposite to each other on the first cover 17 and the support plate 7. ing. Therefore, when the timing bells 1 to 5 are driven and the rotary support shaft 3 is rotated, the thread-wrapped tube 6 rotates integrally with the support shaft 3 and is supported by the attraction action of the magnet 10. The plate 7 is held stationary without rotating.

1-A ballooning regulating plate 19 is disposed horizontally above the tube cover 8, and a guide tube 21 is installed on the upper surface of the regulating plate 19 to accommodate the body 20 in the weft thread handler 1 so as to be slidable in the vertical direction. I arrived at 11. The weft thread locking body 20 is pressed upward by a spring 22 inserted in a guide member 21, and a cam 23 rotated in synchronization with the tightening timing is applied to a cam 4. 1A 271, and is moved downward as the cam 230 rotates:
It's becoming a sea urchin. When the weft thread member 20 is at the lowest moving position, it is inserted into the engagement hole 8C provided on the horizontal surface 81 of the weft cover 8, and the weft thread member 20 is inserted into the engagement hole 8C provided on the horizontal surface 81) of the weft cover 8.
The withdrawal of the weft yarn that has been pulled is now regulated.)
I'm here.

Along with the rotation of the C1 rotating woman 1 and 'JIIIlh3, the weft Y is let out from the yarn winding tube 6, and the weft Y is brought to the horizontal surface 81.
).

13h is wound on the first surface of the thread Wf.

In the threaded portion 9a of the threaded guide member 9, the weft yarn Y enters into the thread 9C, and the rotation support shaft 3 rotates once.
When the tube 6 rotates once, the weft Y is guided in the weft pulling direction by one pitch of the thread groove 9C. Therefore, the yarn winding tube 6 rotates once and the weft yarn Y is transferred to the top cover 8.
When the same weft yarn Y is wound and brought into contact with the horizontal surface 8b again, it is accommodated in the thread groove that follows by one pitch and does not intertwine with the preceding wound yarn. Therefore, the weft threads wound on the thread winding surface always maintain an interval corresponding to one pitch of the thread groove 9c, and the same number of weft threads in four windings may become intertwined with each other, and
It never gets old. As a result, the weft locking body 20 is moved during weft insertion, and the unwinding resistance of the wound weft that is pulled out in the direction of the poem insertion is stabilized, making it possible to perform stable poem insertion without mistakes.

^4 J: Uni, in the past, in order to prevent close winding of the weft, a method was used to adjust the inclination of the winding surface w4, but this method depends only on the shape of the winding surface. This is a very negative approach, and cannot accommodate differences in yarn thickness, amount of fuzz, etc., or differences in unwinding resistance at the weft supply section depending on the size of the cheese.

Furthermore, as the speed of looms increases, it becomes necessary to stabilize the tightening, but it is difficult to overcome this problem with only the passive countermeasures described in the prior art.

In the present invention, the numbered weft yarn is wound on each yarn winding.
! It guides the winding in the direction of the thread inserting direction, reliably prevents the winding fJ wefts from coming into close contact with each other, and is always stable regardless of the unwinding resistance applied to the yarn weft or I:L weft supply section. You can check the condition of the item without asking. Note that the rotation support shaft 30
The screw-like ifoid part 9 is rotated more than 1 revolution per revolution 1! But the same effect is 1! I can.

In this embodiment, the threaded guide part vI9 and the rotation support shaft 3 are arranged in parallel, and the drive mechanism of the threaded guide member 9 can be easily changed to 41-1 by simply adding a timing bell 1N~ and a timing pulley. can, 414'j
This will not lead to a double wholesaler. Of course, it is possible to use a timing bell and a gear structure in addition to the pulley in the driving force transmission mechanism.

In the embodiment described above, only one threaded guide member 9 is provided, but for example, as shown in FIG. Attach the second threaded guide member 25 to the neck,
If the weft is shifted in this way, the separated state of the wrapped weft becomes more reliable.

Further, in the above embodiment, the present invention was embodied in the length measuring Y4 in which the weft locking body was provided on the outside of the thread winding surface, but it is also possible to apply the present invention to a length measuring device in which the weft locking body is made to appear and retract from the inside of the thread winding surface. Embodying the present invention or using a solenoid
It is also possible to embody the present invention in a length measuring device such as a type that controls the length of the weft, or a type that controls the length measurement amount of the weft yarn and the transition in the drawing direction using two weft locking bodies. At O and r, where a predetermined amount of weft yarn is wound and stored on the thread-wrapping surface, the winding E-1 operation of the thread-wrapping tube stops. In a so-called yarn feeder-type length measuring device that rotates, the winding state of the weft varies depending on the operation and stoppage of the thread winding tube, and the variation in unwinding resistance described in the above-mentioned prior art becomes even more noticeable. However,
If the present invention is embodied in this V-n feeder type length-measuring neckpiece, it will be able to be worn stably as in the case of the previous embodiment. V-
A feeder-type length measuring device is necessary for supplying multi-colored weft yarns, and the present invention can also contribute to stabilizing the length measurement of multi-colored weft yarns.

Effects/Details J: Uni, the present invention does not depend on the yarn type or the weft supply section. 1. To provide an excellent effect of preventing tight winding of the weft regardless of unwinding resistance and stabilizing the tightening state.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment embodying the present invention.
2 is a cross-sectional view taken along the line A-A in FIG. 9,25, Weft Y0 Patent applicant Ne14rFl Automatic Loom Manufacturing Co., Ltd. Agent Patent attorney On 1) Hiromane

Claims (1)

[Scope of Claims] 1. In a weft length measuring device that winds the weft supplied from the weft supply section into a thread winder (=I) and does not pull out the weft thread when inserting the weft, the weft thread is wound around the thread winding surface. In order to guide and move the weft yarn in the tightening direction, a screw-shaped guide member that rotates at least once per number of yarn windings is provided on the inside of the yarn winding surface where the threaded portion can engage with the weft yarn. In the weft length measuring device '7゜2 for a loom, the screw-shaped guide member is operatively connected in parallel with the rotating support shaft to which the thread winding tube is attached, which rotates around the thread winding surface, and the support shaft rotates once. 3. A weft sub-length device in a loom according to claim 1, which is rotated once relative to The screw thread is j~
The weft yarn length measuring device for a loom according to claim 2, wherein the weft yarn length measuring device in a loom is provided so as to project slightly upwardly from the horizontal yarn winding surface of the knob cover.