JP2824103B2 - Weft feeder transport cassette - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a weft yarn feeder capable of stably transporting a weft yarn feeder with a yarn end temporarily fixed when replenishing the weft feeder to a loom. The present invention relates to a body transfer cassette.

2. Description of the Related Art In a shuttleless loom such as a jet loom, a weft is supplied from a weft yarn feeder (hereinafter, simply referred to as a yarn feeder) mounted on a yarn feeder stand. At this time, it is common to attach a spare yarn feeder to the yarn feeder stand in addition to the current yarn feeder that currently supplies the weft yarn. In addition, the yarn end on the winding end side (hereinafter referred to as a head yarn) of the spare yarn supplying body and the yarn end on the starting side of the current yarn supplying body (hereinafter referred to as a tail yarn) are connected to form a so-called transfer tail. If so, when the entire amount of the current yarn supply is consumed, the supply source of the weft can be automatically shifted to the spare yarn supply.

The creation of such transfer tails is realized by machine automation. In this operation, first, an operation of grasping and pulling out the head yarn of the spare yarn feeder is necessary, but the spare yarn feeder to be operated is the yarn end (head yarn and tail yarn collectively). , The same applies hereinafter) in a free state, and is often attached to the yarn supply stand as it is.
Note that the operation of gripping the head yarn of the spare yarn supply is indispensable as general preparation for supplying the weft from the yarn supply, and this is limited to the case where the transfer tail is formed. Not something.

According to such a conventional technique, the yarn end in a free state cannot maintain its posture by itself, and therefore, there is a possibility that the yarn supply unit may unwind the yarn during conveyance. In addition, there is a problem that, when the yarn feeder is mounted on a yarn feeder stand, the attitude and position of the yarn end are not fixed and vary greatly depending on the winding amount and shape of the yarn feeder. For example, in an automatic transfer tail creating apparatus, the operation for grasping the yarn end becomes complicated, which causes an unreasonable increase in the size of the apparatus itself and a reduction in the reliability of the operation.

Accordingly, an object of the present invention is to provide a yarn end fixing member for temporarily fixing a yarn end to a base member in view of the state of the prior art, so that a yarn is not unwound from a yarn supplying body during conveyance, and It is an object of the present invention to provide a weft yarn feeder transport cassette that can easily position the yarn end regardless of the size and shape of the yarn feeder as long as it is mounted on the body stand.

Means for Solving the Problems To achieve the above object, a configuration of the present invention comprises a bobbin holder for detachably mounting a weft yarn feeder, and a pair of yarn end fixing members for temporarily fixing the yarn ends of the weft yarn feeder. Is provided on a base member, and the gist of the invention is that the base member includes a holding member for conveyance.

The yarn end fixing member may include a slit for stopping the yarn end of the yarn supplying body.

Also, the base member can be provided with a thread guide parallel to the bobbin holder, and can have a through hole or pin for positioning.

According to the configuration of the present invention, the yarn end of the yarn supplying body attached to the bobbin holder can be temporarily fixed to the yarn end fixing member before the transportation, so that the winding yarn is transferred from the yarn supplying body during the transportation. There is no risk of unwinding. Further, since the yarn end fixing member is provided at a predetermined position of the base member, if the base member is mounted at a predetermined position of the yarn supply stand, the yarn end of the yarn supply will have a size and shape of the yarn supply body. Irrespective of this, the posture is kept constant, and it can be positioned at a predetermined position with respect to the yarn supply stand.

In addition, the whole including the base member can be reliably and stably held and conveyed by a conveying robot, for example, via a conveying gripping member.
Since it is not necessary to directly grasp the bobbin of the yarn supplying body, there is no possibility of damaging the wound yarn. Further, since the gripping member is fixed to a predetermined position of the base member, when the base member is mounted on the yarn supplying stand, the transfer robot positions the gripping member to thereby control the yarn end of the yarn supplying body. Can be accurately positioned at a predetermined position of the yarn supply stand.

When a slit is provided in the yarn end fixing member, the yarn end can be wound around the yarn end fixing member by using this slit, so that the leading end can be made free and the yarn end can be temporarily fixed. Therefore, if air is sucked in the opening direction of the slit,
The yarn end can be easily pulled out and removed from the yarn end fixing member, which is advantageous for automation.

If the yarn guide is provided on the base member, the yarn guide can guide the head yarn and the tail yarn pulled out from the yarn supplying body, and can smoothly pull out the yarn end. Also, if positioning holes or pins are provided in the base member, the whole can be easily and accurately positioned and mounted on the yarn feeder stand by combining with the pins or recesses on the yarn feeder stand side. can do.

Example A cassette 10 for transporting a weft yarn feeder includes a bobbin holder 12, a pair of yarn end fixing members 13, 13 with respect to a base member 11,
A transfer gripping member 14 is provided at a predetermined position (first
FIG. 2).

The base member 11 includes a base plate 11 having through holes 11a1 and 11a1.
a, an upper plate 11b facing the base plate 11a, and a base plate 11a,
And a connecting plate 11c for connecting the upper plate 11b. In the base member 11, the bottom surface 11a2 of the base plate 11a is a mounting surface.

The bobbin holder 12 is provided with a cone holder 1 on the center rod 12a.
2b and 12b are attached, and are erected laterally near the center of the connecting plate 11c. The cone holders 12b and 12b are tapered large and small members that are integrally formed of, for example, a soft plastic material and that expand toward the base of the center rod 12a, and rotate around the center and the tip of the center rod 12a, respectively. Stopped and attached. Cuts 12b1, 12b1,... Are formed in each cone holder 12b, and the bobbin holder 12 allows the yarn feeder Y to be easily attached and detached via the cone holders 12b, 12b, and the yarn feeder once mounted. Y is prevented from dropping carelessly.

The thread end fixing members 13, 13 are mountain-shaped members juxtaposed on the upper surface of the upper plate 11b, and have slits 13a, 13a,. The head yarn Y1 and the tail yarn Y2 of the yarn supplying body Y to be mounted on the bobbin holder 12 are wound around the tapered peripheral wall of another yarn end fixing member 13 several times, and then the ends thereof are bent to form slits 13a, 13a. It can be temporarily fixed by stopping at ... Therefore, since the thread end at this time has a free tip, it can be easily unwound and removed from the thread end fixing member 13 by a releasing operation of pulling it upward.

The gripping member 14 is formed in a substantially frustoconical shape, and the bolt member 14
It is fixed upward to the upper surface of the upper plate 11b via a. A small-diameter neck portion 14b is formed on the upper portion of the gripping member 14. For example, by gripping the gripping member 14 by the transport robot T, the entire transport cassette 10 can be transported (FIG. 3). . Such a gripping mechanism may use, for example, a tool exchange device of a machining center. In addition, the gripping member 14 is arranged such that the axis CL is aligned with the center of one through hole 11a1 of the base plate 11a (FIG. 2).
The transport cassette 10 can be easily positioned and mounted on the yarn supply stand S.

Yarn stand S of the loom to which the transfer cassette 10 is mounted.
Consists of a table S1 and a stand rod S2 that supports the table S1 so that it can move up and down (FIGS. 1 and 2). A table S1 is provided between the table S1 and a collar S3 fixed to the stand rod S2. A spring member S4 biasing upward is interposed. It is assumed that a key or the like (not shown) is interposed between the table S1 and the stand rod S2, and the table S1 is movable only in the vertical direction.

The table S1 has an upper surface formed to be smooth, and a fixed pin S5 and a movable pin S6 that can be engaged with and disengaged from the through holes 11a1 and 11a1 of the base plate 11a. Therefore, the transfer cassette 10
By inserting the fixed pin S5 and the movable pin S6 into the through-holes 11a1 and 11a1, it is possible to mount the pin at a predetermined position on the yarn feeding stand S accurately and mount it. The movable pin S6
Is urged upward by the base compression spring S7,
When the compression spring S7 is retracted, the distal end of the movable pin S6
It shall be completely retracted from the upper surface of S1.

The transport robot T can transport the yarn feeder cassette 10 from, for example, a stockyard (not shown) to the loom and mount the yarn feeder Y on the yarn feeder stand S in a state where the yarn feeder Y is mounted on the yarn feeder cassette 10. (FIG. 3). The transfer robot T is a rail T1 installed between the loom and the stockyard.
And a robot main body T2 including drive rollers T3 and T3 that roll on the rail T1.
Further, the robot main body T2 includes an arm T4 for gripping the gripping member 14, and a thread end carrier T5 for releasing and holding the thread end temporarily fixed to the thread end fixing members 13, 13.
The transfer robot T operates in accordance with a control signal from a control device (not shown). The robot main body T2 moves along the rail T1, and the arm T4 corresponds to the arrow in FIG.
It is assumed that the yarn end carrier T5 can move up and down and rotate in the directions K1 and K2, and can move up and down and move in the directions indicated by arrows K3 and K4 in FIG.

The empty transfer cassette 10 is loaded into the bobbin holder 12 with the yarn feeder Y.
Is mounted, and the head yarn Y1 and the tail yarn Y2 of the yarn feeder Y are temporarily fixed to different yarn end fixing members 13, 13, respectively, and then stored in a stock yard.

Next, in accordance with the yarn supply request signal from the loom, the transport robot T grips the gripping member 14 and moves from the stock yard to a first temporary placement table (not shown) provided near the yarn supply stand S of the loom. The transport cassette 10 is transported upward and is placed.

Subsequently, the transport robot T removes the transport cassette 10 from the yarn supply stand S on the side where the yarn has been supplied, and places it on a second temporary mounting table (not shown). Then the first
The transport cassette 10 on the temporary mounting table is gripped and transported to a position above the yarn supplying stand S, and the arm T4 is lowered to fit the fixing pin S5 into the through hole 11a1 of the base plate 11a. At this time, when the other through hole 11a1 and the movable pin S6 do not face each other accurately, the arms T4 are slightly rotated left and right to securely fit the two. Confirmation of mating at this time
It can be detected by the upward movement of the movable pin S6 or the change in the rotational torque of the rotary chuck incorporated in the arm T4. Further, a torque limiter for limiting the rotational torque of the rotary chuck may be provided so that, once the movable pin S6 has been fitted, the rotary chuck is prevented from further rotating.

As described above, the transport cassette 10 is mounted on the yarn supplying stand S
On the other hand, the head yarn Y1 and the tail yarn Y2, which are positioned and mounted at the predetermined positions, and thus temporarily fixed to the yarn end fixing members 13, 13, can be accurately positioned at the predetermined positions with respect to the loom. .

Further, the head yarn Y1 temporarily fixed to the yarn end fixing member 13 is removed by the yarn end carrier T5 (two-dot chain line in FIG. 2),
For example, by transporting to the location of the transfer tail creating apparatus, the operation can be shifted to the transfer tail creating operation. The yarn end carrier T5 is, for example, a suction tube whose tip end fits into the yarn end fixing member 13, and sucks air from above while covering the yarn end fixing member 13, thereby turning the head yarn Y1 into a yarn. It can be easily released from the end fixing member 13 and held.

The yarn feeder Y is mounted on the yarn feeder cassette 10 and integrated therewith, so that the transfer operation by the transfer robot T and the mounting operation to the yarn feeder stand S are performed irrespective of its shape and size. Can be performed in the same manner. That is, these work objects are started from the yarn feeder Y having many uncertain elements including the yarn end, and from the yarn feeder cassette 10 having a fixed shape.
Then, the transfer robot T can easily execute a series of operations.

Other Embodiments The base member 11 of the transport cassette 10 includes yarn guides 11d and 1d.
1d may be formed on both sides of the bobbin holder 12 (fourth
Figure). The yarn guides 11d, 11d can be used as guides for removing the yarn ends temporarily fixed to the yarn end fixing members 13, 13 and pulling out the head yarn Y1 and the tail yarn Y2 from the yarn supplying body Y. The yarn end can be more smoothly pulled out from the body Y.

The yarn end fixing members 13, 13 can include hollow portions 13b, 13b (FIG. 5). After the yarn end is wound around the peripheral wall, it is bent, and the leading end thereof is housed so as to hang down in the hollow portions 13b, 13b for a long time, so that the hollow portions 13b, 1
Since a strong suction flow is generated in 3b, the operation of releasing the yarn end by the yarn end carrier T5 can be performed more smoothly. In addition,
In the figure, each yarn end fixing member 13 has a V
Although a slit 13c in the shape of a letter is formed on the upper end surface, the slit 13c is not always necessary.

The base plate 11a of the base member 11 may be provided with a pin 11a3 projecting downward instead of forming the through hole 11a1 (sixth embodiment).
Figure). Note that, in the yarn supply stand S, a recess S8 that fits the pin 11a3 is formed on the upper surface of the table S1 instead of the fixing pin S5. That is, as long as the base member 11 can be easily mounted at a predetermined position with respect to the yarn supplying stand S, the positioning means may be formed in appropriate shapes on both sides, and these may be combined.

In the above embodiment, the bobbin holder 12, the yarn end fixing members 13, 13, and the gripping member 14 can easily attach and detach the yarn feeder Y, and can temporarily release the yarn end to temporarily release the yarn when necessary. Provided that T can be easily gripped, these shapes and installation locations can be changed to any form other than those shown.

As described above, according to the present invention, the relative positional relationship between the base member and the yarn end is fixed by temporarily fixing the yarn end of the yarn feeder to the yarn end fixing member provided on the base member. Since the yarn end of the yarn feeder being transported is not inadvertently moved, the yarn end can be fixed at a predetermined position simply by positioning and mounting the base member on the yarn feeder stand. In addition, since it can be easily released and removed when necessary, for example, when automating a transfer tail making operation, etc., it is possible to greatly simplify an automation device and greatly improve operation reliability. effective.

[Brief description of the drawings]

1 to 3 show an embodiment, FIG. 1 is an overall perspective explanatory view, FIG. 2 is an overall assembly explanatory view, and FIG. 3 is a use state explanatory view. 4 to 6 show different embodiments. FIG. 4 is a diagram corresponding to FIG. 1, FIG. 5 is an enlarged perspective view of a main part, and FIG. 6 is a sectional explanatory view of a main part. Y ... weft supply body 10 ... transport cassette 11 ... base member 11a1 ... through hole 11a3 ... pin 11d ... thread guide 12 ... bobbin holder 13 ... thread end fixing member 13a ... slit 14 ... Gripping member

Claims (4)

(57) [Claims] A base member is provided with a bobbin holder for removably mounting a weft yarn feeder and a pair of yarn end fixing members for temporarily fixing the yarn ends of the weft yarn feeder. A cassette for transporting a weft yarn feeder, comprising a gripping member for use. 2. The cassette according to claim 1, wherein the yarn end fixing member includes a slit for stopping a yarn end of the weft yarn supply body. 3. The cassette according to claim 1, wherein the base member includes a yarn guide parallel to the bobbin holder. 4. The cassette according to claim 1, wherein said base member has a positioning through-hole or a pin.