JPS6081354A - 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 involves winding and measuring the length of a weft supplied from a weft supply section, wrapping and storing one end of the measured weft, and removing the wound and stored weft at the time of weft insertion. The present invention relates to a spinning sub-length device in a loom which is adapted to draw out a spinning machine.

BACKGROUND OF THE INVENTION In general, fluid jet looms are provided with a weft length measuring device for measuring the weft length of one weft insertion for roughening and temporarily storing the measured weft length.

As this type of weft sub-lengthening device, the weft thread is wound around the drum by relatively rotating the weft thread from the weft supply section (= weft thread supplied through the tip opening of the I pipe), and the length is measured.
A weft length measuring device is used in which one end of the measured weft is wound and stored, and when the weft is inserted, the unwrapped and stored weft is pulled out.

This winding type sub-length device was designed in the Song Dynasty to control the measured length of the weft wound on the drum and the transition in the weft pulling direction by a pair of weft locking bodies that protrude and retract from almost the same part of the drum circumference. ing. This twill locking body is moved in and out of the drum by a drive device 4, which is driven from a cam and a cam lever provided in the ram, or a gear or the like. High precision is required for the timing of the appearance and retraction of the weft yarn locking body in controlling the weft length measurement^1 and the transition to the weft withdrawal direction. Therefore, the drive unit 414 is required to be tightly shielded, and there must be no dust or other impurities.

Therefore, the weft locking body is moved in a reciprocating linear motion, and the locking body is circumferentially guided by a bushing to prevent fluff from entering the drum from the protruding and retracting portion of the weft locking body.

However, as the speed of the loom increases, the number of times that the weft locking body appears and disappears per unit 04 is increased, and the sliding wear between the weft locking body and the bushing becomes faster.

Therefore, the weft locking body or bushing must be replaced in a short period of time, which is a factor that hinders the trend toward higher speeds of looms.

Purpose: Does the present invention solve the above problems? The purpose of this is to reduce the sliding friction between the weft locking body and the part that slides and guides the locking body to prevent wear, and to reduce the friction of these parts. The purpose is to provide a weft length measuring device that can reduce the lifespan.

Structure In order to achieve the above-mentioned object, in the present invention, the point of action of the driving member for protruding the weft yarn locking body from the yarn winding surface is set at the time when the weft locking body starts its protruding action (at the same time as the axis of the locking body). We adopted the structure of placing it on the mind.

EXAMPLE Hereinafter, an example embodying the present invention will be explained based on the drawings.

A support bracket 2 is fixed to d3, and a rotary support shaft 3 is rotatably attached to collect oil.
A weft guide hole 3a for guiding the weft Y supplied from a weft supply unit (not shown) such as a weft is provided along the axis of the support shaft 3. A timing pulley 4 is fixed to the base end side of the rotation support shaft 3, and a timing belt 5 is hung around the pulley 4. The bell 1 to 5 is driven in synchronization with the rotation of the machine base and rotates the rotation support '1il11.3.

In the vicinity of the support brackets 1 and 2, a thread winding tube 6 is attached to the rotary support shaft 3 so as to communicate with the weft guide hole 3a, and a thread winding tube 6 is attached to the rotating support shaft 3 so as to communicate with the weft guide hole 3a.
It's being talked about. A support 7 is supported on the tip side of the rotation support shaft 3 so as to be relatively rotatable, and a disk-shaped support plate 8 is supported on the front side (on the right side in FIG. 1) of the rotation support shaft 3 so as to be rotatable relative to the rotation support shaft 3. It is fixed. Also, on the front side of the support plate 8, there is a 1-
Ram 9 is attached. A support plate 8 and a top cover 10 fixed to the drum 9 are installed above the drum 9.
Being beaten.

A plurality (three in this embodiment) of arc-shaped alignment holes 11 are provided on the front surface of the peripheral edge of the support plate 8, and a plurality (four in this embodiment) are provided on each adjustment table 11. 8 adjustment pin 12 is attached to the screw 13 and nut 14 along the guide groove 88 provided along the radial direction of the support plate 8, as shown in FIG. J: It is provided so that the position thereof can be adjusted. A bobbin winding surface is formed by the above-mentioned lug covers 10 and the plurality of adjustment bins 12.

M177i of the support bracket 2 has a bobbin winding I4↑'
A cover 15 covering 6 is fixedly attached. Magnets 16 are provided on the cover 15 and the support plate 8 so as to face each other and are attracted to each other. Therefore, the timing belt 5
When the rotary support 'I'l113 is rotated by being driven,
As the thread-wrapped tube 6 rotates together with the support shaft 3,
Due to the attraction action of the magnet 16, the support plate 8 is held stationary without rotating.

The rotary support shaft 3 is rotatably supported at its tip by a support plate 17 fixed in the drum 9.
A 1×4 wheel 18 is fixed to the tip of the wheel. Support plate 1
A human gear 20a and a small diameter gear 2 are attached to the shaft 19 fixed to the shaft 7.
A deceleration gear body 20 consisting of gears 0b and the like is rotatably supported, and gears 0a and f are meshed with the gear 18. Also, within the drum 9, the rotation support l7i11
3 has a gear portion 21 in meshing relationship with the small diameter gear 20b.
A cam body 21 having a shape a is rotatably supported, and similar separate cam portions 21+) and 21C () are provided on the same force body 21 with a phase difference of 180 degrees. and,
As the rotation support shaft 3 rotates, the cam body 21 is rotated at a reduced speed via the gear 18 and the gear body 2o, and rotates once per rotation of the machine base.

Above the cam part 211), a first thread locking body 22 is connected to the first thread locking body 22.
- It is set (pulled) from the knob cover 10 at the stop for exiting,
Further, above the cam portion 21c, a second weft member 23 is provided so as to be retractable from the top cover 10.

Both wire thread locking holes 22 and 23 are attached to the top cover 10 respectively.
slidingly guided by bushings 24°25 press-fitted into the
The first weft locking body 22 has a spring receiver 22 provided at its base end.
The compression spring 26, which is interposed between the spring receiver 24'a and the bushing 24, always moves downward (
=J force, and the second weft thread binding member 23 also has a spring catcher 23a and a bush 2!, which are provided at the base end thereof. ′)
It is urged downward by a bar compression spring 27 interposed between the spring receiver 25a and the spring receiver 25a. The base end of the first weft locking body 22 is provided at the tip of a first swinging lever 29 that is rotatably supported by a shaft 28 fixed to the support plate 8.
The cam body 2 is in contact with the rotor 29a which has been bent.
1, the swinging lever 29 is reciprocated upward via the cam follower 291 which rolls on the cam surface of the cam portion 21b as the lever 111i! The thread locking body 22 is subjected to an upward and downward reciprocating linear movement under the action of a compression spring 26, that is, it is adapted to be moved in and out from any side of the bobbin winding of the knob cover 10. Further, the base end of the second weft locking body 23 is connected to the support plate 8.
The tip of the second swing lever 31 is rotatably supported by a shaft 30 fixed to the rotor 31a, and as the cam body 21 rotates, the cam portion 21c The second swing lever 31 is reciprocated up and down via the J muff A lower 31b (which rolls on the cam surface), and the second thread locking body 23
The upper reciprocating portion F is operated under the action of the compression spring 27.
l! It is interlocked, that is, it appears and appears from the knob cover 10.

Now, place the spring receivers 22a, 23a at the base of the 1.2nd thread locking bodies 22, 23 (the lower surface of the rotors 29a, 31
a (Fig. 3(a)).

(b) shows only the second weft locking body 23). However, when the second thread locking body 23 is in the retracted state and is in the ff downward movement position, the rotor 31a is at the lower end of the l1jl locking body 23 at the axis c of the second thread locking body 23. is in contact with Therefore, when the swing lever 31 is moved upward with the rotation of the cam body 21, the point of action of the rotor 31a is on the axis C of the locking body 23 at the start of the upward movement, so that the weft An acting force is applied to the locking body 23 in the direction of its axis C. By the way, the original oscillation coefficient between the weft locking body 23 and the bush 25 is maximum at the time of static friction, that is, when the weft yarn locking body 23 moves against the pusher Z25. In the present invention, when the swinging lever 31 is moved in one direction, the point of action of the rotor 31i+ is located on the axis C of the weft thread retaining body 23 (r/),
No lateral force acts on the weft locking body 23 and the pusher 125. Therefore, there is a weft locking body 2 in front of the up movement start opening.
No pressing action occurs between the bushing 25 and the bushing 25, and the thick friction force between the two parts becomes 7fa small. As a result, the weft thread is locked 2
3 and the bushing 25 due to sliding is reduced, and the life of the rain ring is extended.

Naturally, prolonging the life of the weft locking body 23 and the bushing 25 may delay their replacement time.
This will reduce costs or increase the operational efficiency of the fabric.

In addition, in the case of tree-hugging, the downward movement of the weft yarn locking bodies 22 and 23 is performed by the action of the compression springs 26 and 27, so even when they are stationary, there is almost no side L [, and sliding wear is reduced. .

J3, if the inner peripheral surface of the bushings 24 and 25 is treated with 7 freon or chrome plated, its wear resistance will be further increased.

Also, in this actual example, 1 to bush cover 10 and bush 24.
25 are integrated, resulting in a 1!4I structure.

Effects As described in detail above, the weft length measuring device of the present invention has a driving unit 4A (the above-mentioned implementation In the example, by placing the points of action of the rotors 29a and 31a on the axis of the weft locking body at 45 at the start of the ejection action, d5i is fixed at the start of movement of the weft locking body. The gap can be reduced, and the wear of the weft locking body and the members in sliding contact with the locking body (d3-(iJ pushshi) 24°25 in the above embodiment) can be reduced and their spaces can be reduced. It is said to be able to prolong life (this confirms its known effects).

[Brief explanation of drawings]

Fig. 1 is a cutaway side view of essential parts of a solid/single color example embodying the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 (
3(a) is a fractured pressure surface view of the main part showing the state of contact between the weft locking body, rotation φ) and the child, and FIG. 3(b) is a fragmentary side view of the main part at +61. Drum 9, top cover 10, Mf? Thread handler...body 22
°23, bushes 24, 25, swing levers 29, 31,
Rotor 29a, 31a, llh center 0, weft Y. Patent Applicant H+' Co., Ltd. 11-1 Automatic Edge Machine Manufacturing Agent Patent Attorney Onl111t9:α Figure 3 (a) (b) 1a

Claims (1)

[Scope of Claims] 1. In a weft sub-lengthening device that winds a weft supplied from a weft supply section onto a winding surface and pulls out the weft at the time of weft insertion, the length measurement amount of the weft and the amount of weft to the weft insertion side are determined. In order to control the transition, the point of action of the drive member for causing the weft thread locking body that is retracted and retracted from the thread winding surface to protrude from the thread winding surface is placed on the axis of the weft thread locking body at the start of the protruding action. Features: Weft sub-length device on the loom. 2. The driving member is a rotor provided at the tip of a lever that is reciprocally oscillated in synchronization with the rotation of the machine base within the drum, and the driving member is a rotor that has the yarn winding surface, and the point of action is the weft locking body. The weft sub-length device in a loom according to claim 1, wherein the weft sub-length device is a contact point of the rotor that comes into contact with the base end of the weft.