KR840001603Y1 - Weft yarn feeder of needle loom - Google Patents

Abstract

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Description

Weft feeder such as needle loom

Figure 1 is a schematic plan view of a needle loom (needle) loom with a weft feed device according to the present invention.

2 is a cross-sectional view of the weft feeder of FIG.

3 is an exploded perspective view of the driving roller.

4 through 6 are cross-sectional views taken along lines A-A, B-B and C-C of Fig. 2, respectively.

The present invention relates to a weft feed device for use when supplying the bobbin-wound yarn to the filling carrier of the needle loom as weft yarn.

As is well known, a typical example of this type of wee feeder is a roll fixed to a rotating shaft, which is used to transmit the rotational motion of the roll to the winding chamber several times around the roll. In this device, however, the wounds of the rolls are crowded with each other in accordance with the rotation of the rolls, and the wounds are not constant, such as overlapping with adjacent threads or returning to the original state from the stacked state, so that the rotation of the rolls is accurately controlled. Even in this case, there is a drawback that the conveying amount of the yarn cannot be controlled as desired.

Also known as a device for solving this drawback is a drive roller to the rotating shaft, and a free roll attached to the fixed shaft that can be adjusted in any twisted relation to the rotating shaft with a rotating roller. It was to transmit the rotational movement of the driving roller to the reel room. According to this device, the yarn wound on the sheep wool by the effect of the rotational axis and the fixed shaft arranged in the twisted relation occupies a predetermined winding position determined by the twisted relation of both sides, and the variation in the wound state As a result, the uneven amount of feed due to the fluctuation of the wound state of the yarn is eliminated.

However, since the driving roller and the driven roller are arranged on the rotating shaft and the fixed shaft supported only on one side, the two shafts are bent due to the tension of the thread wound over the two rollers, so the rotation of the driving roller and the driven roller can be precisely controlled. There is a flaw that cannot be. In order to prevent this drawback, if the free end of the rotating shaft and the fixed shaft is connected with a bracket, it will be possible to change the twisted relationship between the two shafts according to the type of thread to be transferred, the number of windings, or the diameter of the driving roller. Because of the use of the brackets, a new problem arises that the installation operation of the feeder becomes complicated.

The present invention was devised to solve these defects. Even when the twisted relationship between the rotating shaft and the fixed shaft is changed depending on the type of thread to be transferred, the number of winding the thread, or the diameter of the driving roller, By allowing the free end to be connected with the same bracket, the installation operation of the transfer device is simple and easy, and furthermore, it is an object of the present invention to provide a weft transfer device such as a needle loom that can accurately control the transfer amount of the yarn.

Hereinafter, the present invention will be described according to an embodiment shown in the accompanying drawings. As shown in FIG. 1, the weft yarn 1 drawn from the bobbin (not shown) is wound around the weft feeder 3 via the guide 2, and then passes through the guides 4 and 5 to absorb the tension. 6), passing through the hole 8 of the filling carrier 7 to the front 10 of the tape 9 to be woven, into the opening of the inclined 12 formed by the heald 11 and the filling carrier 7 The tape is inserted from one side of the tape, and then pressed onto the immediately preceding 10 by the lid 14 on the latch needle 13 located on the other side of the tape to weave the tape.

The upper conveying apparatus 3 is composed of a driving roll 15 and a driven roll 16, and the driving roll 15 is supported to be rotated in a frame (not shown), as shown in FIGS. 2 and 3. The rotary shaft 19 connected to the driven drive shaft 17 with a screw 18, a pair of disks 20 and 20 fitted at intervals on the shaft, and a thread connected to these disks 20 and 20 are wound. It consists of six bars 21.

The rotating shaft 19 is cut out circular cross section shape which has the flat surfaces 22 and 22 in both sides. The pair of discs 20 and 20 respectively consists of a cylindrical sleeve 23 extending in the axial direction of the rotating shaft 19 and an inner disc 25 composed of a guide disc 24 formed integrally with the outer end of the sleeve 23. (25) and an outer disk (28) fitted to a recess (27) formed by a flange (26) extending outward from the outer peripheral portion of the guide disk (24).

The pair of inner disks 25 and 25 are engaged with three protrusions 29 and 29 provided at equal intervals on the inner ends of the sleeves 23 so as to be integrated so as to rotate around the rotary shaft 19. The pair of outer disks 28 and 28 has a shaft hole 30 which is the same as the cross-sectional shape of the rotating shaft 19, and is supported by the shaft hole 30 and the rotating shaft 19 so as not to rotate about the rotating shaft 19. have.

In the guide disk 24 of the inner disk 25, six linear guide grooves 31 are radially formed at regular intervals in the radial direction at the center thereof as shown in FIG. 5, and the outer disk 28 As shown in FIG. 4, six arcuate guide grooves 32 are formed to intersect with the electric guide grooves 31.

As shown in Fig. 2-6, the bar 21 is provided with a main portion 33 having a substantially equilateral cross section, a guide portion 34 having a substantially rectangular cross section formed at both ends thereof, and a guide portion 34 of the guide portion 34. The cross section integrally formed on the outer surface is formed of a circular guide pin 35.

The guide portion 34 and the guide pin 35 slide into the guide grooves 31 of the inner disk 25 and the guide grooves 32 of the outer disk 28, respectively, so that both guide grooves 31 ( The main part 33 is supported at the intersection of 32). The pair of disks 20 and 20 is squeezed by a step portion 36 formed at the base of the rotating shaft 19 and a nut 37 fitted to a screw portion provided at the free end of the rotating shaft 19, which is an inner disk. The 25 and the outer disk 28 are fixed to the rotating shaft 19 at the same time, and the bar 21 is held at a predetermined position. And 38 is a washer.

Therefore, the position of the bar 21, that is, the diameter of the driving roller 15 is to loosen the nut 37 a little to rotate the inner disk 25 relative to the outer disk 28 so that the guide grooves 31 and 32 can be rotated. It can be changed arbitrarily by action. The free roll 16 has a fixed shaft 39 having a circular cross section fixed to a frame (not shown) parallel to the rotary shaft 19 as shown in FIG. 2, and a sleeve fixedly rotatable to the shaft 39 ( 40 and a roll 47 attached freely around the sleeve 40.

There is a shaft hole 42 fitted to the fixed shaft 39 of the sleeve 40. The fixed shaft 39 is inserted into the shaft hole 42 and fixed to the shaft 39 with a screw 43. The axis 44 of the shaft hole 42 intersects or twists with the axis 45 of the sleeve 40 (hereinafter, the shaft hole 42 is referred to as an inclined shaft hole).

The roll 41 is pivotally attached to the sleeve 40 through the ball bearing 46, and has an annular flange 47 integrally formed at one end of the sleeve 40 and a screw 48 at the other end of the sleeve 40. The fixed shaft 39 is restricted from moving in the lengthwise direction by the stopper collar 49 fixed with). Therefore, the roll 41 is arranged in a twisted relation with respect to the rotation shaft 19, and this twisted relation can be arbitrarily adjusted by loosening the screw 43 a little and changing the position of the sleeve 40 with respect to the fixed shaft 39. It was.

The rotating shaft 19 and the fixed shaft 39 are supported by the bracket 50 at their free ends and reinforce each other, so that the rotary shaft 19 and the fixed shaft 39 are supported under the action of the tension of the thread wound on the driving roller 15 and the driven roller 16. There is no bending. Reference numeral 51 is a needle bearing. The tension absorbing device 6 is a known structure having a pair of spring guide arms 54 and 54 between the guides 52 and 53 provided on the inlet and outlet sides of the weft yarn as shown in FIG. Reference numeral 55 is a guide pin for changing the weft direction.

Since the above-mentioned feed mechanism of the present invention has the above configuration, when adjusting the twisted relationship between the driving roller and the free roller according to the type of the yarn to be transferred, the number of winding the threads, or the diameter of the driving roller, the adjustment is performed. Can be done without changing the relative relationship between the rotating shaft and the fixed shaft by changing the position of the sleeve with the inclined shaft hole.

Therefore, even when the twisting relationship between the two rolls is adjusted in any state, the free end of the rotating shaft and the fixed shaft can be connected by the same bracket, thereby eliminating the error of the feed amount caused by the bending of the rotating shaft and the fixed shaft, and at the same time, the installation operation of the feeding device is simple. It is effective to be easy.

Claims (1)

The sleeve 40 with the inclined holes 42 is rotatably fixed to the fixed shaft 39 disposed in parallel with the rotation shaft 19 of the driving roller 15, and the sleeve with the inclined holes 42 A weft feeder such as a needle loom, such as a needle loom, characterized in that the roll 41 is disposed on the rotating material 40, and the free ends of the rotating shaft 19 and the fixed shaft 39 are connected and supported by the bracket 50. .