JPS6021412Y2 - Drum-type weft storage device for shuttleless looms - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a drum-type weft storage device for a shuttleless loom.

As a conventional drum-type weft storage device for a shuttleless loom, the following weft storage device has been proposed by the applicant of the present invention (Japanese Patent Application No. 55-86497).

That is, a tapered part, a straight part, a first hole, and a second hole are formed on a drum which is disposed between several yarn feeding stages and a weft insertion device and is held stationary.The loom is connected to the first hole. 6. A first locking body as a locking means for locking the weft at least during the weft insertion operation, and a first locking body that locks the weft yarn at least during the weft insertion operation into the second hole in conjunction with the loom; A second locking body is provided outside the drum as a locking means for locking the weft, and a winding guide for winding the weft around the drum is rotatably provided on the outer periphery of the drum. A weft yarn of a predetermined weft insertion length is wound between the second locking body and the second locking body.

According to this, since the drum itself does not rotate, it becomes possible to arrange the locking means outside the drum, and there is an advantage that timing adjustment and maintenance inspection can be easily performed.

However, in such a conventional drum-type weft storage device, when the loom is stopped, at least one of the first locking body and the second locking body is inserted into the hole of the drum, so that, for example, when the loom is stopped, the loom is stopped. When replacing the drum when changing the width of the cloth, after disassembling the part of the cam that operates the first and second locking bodies and freeing each locking body to exit the drum. There was a problem in that the drum had to be replaced and the work was very complicated.

Also, depending on the type of yarn, for example, twin yarns with a lot of fluff, slipping with the drum surface is difficult, and the weft threads are mixed in the tapered part, which may cause the weft threads to be wrapped next. Because of this, it is the same as the weft being clamped at the overlapped portion, resulting in poor weft insertion.

In this case, in order to restart, it is necessary to remove the part of the weft insertion part that is wrapped around the drum, but since the loom is stopped when the second locking body has entered the drum, it is necessary to remove it. The problem was that it was difficult to do.

The present invention has been made by focusing on such conventional problems, and includes a manual operation means for manually retracting the locking body to the release position, in addition to a driving means for driving the locking body in conjunction with the loom. The purpose is to solve the above problems by providing the following.

Hereinafter, the present invention will be explained based on the drawings.

1 and 2 show an embodiment of the present invention.

1 is a frame, 101 is a weft, 2 is a weft inserting nozzle, 3 is its bracket, 4 is a bracket for fixing the thread guide, 5 is a thread guide, 6 is a bracket with a bearing part 7 at the tip, and the frame is attached by a bolt 8. It is fixed at 1.

A rotary shaft 9 is rotatably supported by the bearing portion 7, and a toothed pulley 10 is fixed to one end thereof.

A drum 15 having a tapered part 15a and a straight part 15b is rotatably attached to the other end.

A weft through hole 16 is bored in the core of the rotating shaft 9.

Reference numeral 17 denotes a winding guide extending in the radial direction of the rotating shaft 9, the tip of which is inclined toward the tapered portion 15a of the drum 15, and a thread guide 18 is fixed to the tip.

27 is a first locking body, and 28 is a second locking body, both of which are loosely fitted onto a shaft 46 protruding from the bracket 29.

Reference numeral 30 denotes a rotary shaft which is driven by a pulley 32 and rotates in synchronization with the main shaft of the loom, to which cams 33 and 34 are fixed as driving means for causing the respective locking bodies to move.

Reference numeral 35 denotes a shaft protruding from the bracket 29, into which one end of a lever 38.39 having a cam follower 36.37 that abuts the cam 33.34 is loosely fitted.

The tips of these levers 38 and 39 and the first locking body 27
And the second locking body 28 is linked by rods 40 and 41.

The levers 38 and 39 are connected to the cam followers 36 and 37 by springs 48 and 49 tensioned on the bracket 29.
, 34.

Reference numerals 43 and 44 designate a release lever as a manual operation means that is rotatably fitted loosely into a stud 45 protruding from the bracket 29.

47 is a stopper for the release levers 43, 44.

A screw 50.51 is screwed into a part of the release levers 43, 44, and is fixed with a lock nut 52.53.

A passive piece 54.55 extends from the lever 38.39 to a position facing these screws 50.51,
The passive piece 54.55 has a recess 1 in which the screw 50.51 engages.
02,103 is a formality.

When the release levers 43 and 44 are rotated in the direction of arrow A in FIG.
4.Press down 55 and cam followers 36 and 37 move to cam 3.
The levers 38 and 39 are rotated to a position where they do not come into contact with the levers 3 and 34, and the screws 50 and 51 fall into the recesses of the driven pieces 54 and 55, thereby locking them.

Therefore, when replacing the drum 15, if the release levers 43 and 44 are rotated in the direction of arrow A in FIG. The second locking body 28 is rotated in the direction of arrow B and withdrawn from the drum 15.

In this state, the drum 15 supported by the rotating shaft 9 is removed and replaced with one of a different diameter.

After the replacement is completed, the release levers 43 and 44 are returned to their original state.

As explained above, according to the present invention, since the manual operation means that allows the locking body inserted into the hole of the drum to be manually pulled out is provided, even when the drum is replaced, it is possible to Even when correcting a weft insertion failure due to jamming, the effect can be obtained that the work can be easily carried out without disassembling the cam part.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a weft storage device according to the present invention, and FIG. 2 is a plan view of FIG. 1. 15... Drum, 17... Winding guide, 27... First locking body, 28... Second
Locking body, 33, 34...Cam, 43, 44...
...Release lever as manual operation means 54,
55...Passive piece, 101...Weft.

Claims (1)

[Scope of utility model registration request] While the weft from the yarn feeding means is locked by a winding guide to a locking body placed outside the drum held stationary, the weft is wound around the drum and stored, and interlocked with the loom at the time of weft insertion. In a drum-type weft storage device in which the locking is released by retracting the locking body to the release position by a driving means, the locking body is manually moved to the release position separately from the drive means. A drum-type weft storage device for a shuttleless loom equipped with a manual operation means for evacuation.