JPH02104748A - Feeding apparatus for loom - Google Patents

Abstract

PURPOSE:To increase number of loom capable of assigning to a robot by detachably mounting a yarn feeding unit cassette, having plural yarn feeding unit holding shafts turning axial line to a prescribed direction and erected on a base plate, on a cassette base and exchanging a yarn feeding unit as a cassette unit. CONSTITUTION:Yarn feeding units are detachably mounted on a cassette base 12a so that directing point of yarn feeding unit cassettes 20 erected on a cassette base plate so as to center center axis line of plural yarn feeding unit holding shafts 22 to a prescribed directing point coincides with a weft intake port of a loom. When yarn Y1 of each yarn feeding unit cassette loaded to the above- mentioned plural yarn feeding unit holding shafts 22 is consumed, yarn of yarn- feeding unit Y on other cassette 20 is fed to the loom by working of automatic weft intake apparatus and simultaneously a robot 50 is driven and a holding part 21b of the cassette 20 on the side becoming yarn feeding unit already used is held by a cassette hunger of the above-mentioned robot 50 and pulled out from the cassette base 12a and then new yarn feeding unit cassette 20 is fitted into the above-mentioned cassette base 12a to exchange the yarn feeding unit as a cassette unit.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a yarn feeding device for a loom for efficiently replacing a yarn feeding body for feeding weft yarns of a loom.

The prior art applicant previously proposed that when the supply of the weft yarn from the current yarn supplying body is cut off due to the completion of use of the yarn supplying body or the occurrence of a yarn breakage accident, the applicant uses the backup yarn feeding body We would like to propose an automatic weft pulling device that can automatically restart the operation of a loom by pulling out the end of the weft from a loom and pulling it into the loom.
Publication No. 62-62290, Japanese Patent Application No. 62-92
No. 627).

According to these prior art techniques, the operation of switching the weft yarn from the working yarn feeder mounted on the yarn feeder to the backup yarn feeder can be smoothly automated. Used yarn feeding body on the yarn feeding device (empty bobbin when the weft on the yarn feeding body is completely used, and a certain amount of yarn remaining due to a yarn breakage accident during use, etc.) If it is possible to automate the replacement work between the existing yarn feeder (including the existing yarn feeder (hereinafter the same shall apply)) and a new replenishment yarn feeder (hereinafter referred to as the replenishment yarn feeder), it will be possible to complete a fully automated system at a weaving factory. This could be a major step towards achieving this goal.

Therefore, in such a yarn feeder replacement system, it is assumed that a robot is used to replace the used yarn feeder on the yarn feeder with a replenishing yarn feeder, but the conventional yarn feeder Since the robot attached each yarn feeder individually, the robot discharged one used yarn feeder from the yarn feeder and replaced it with one replenishing yarn feeder. It had to be operated by attaching it to the yarn feeding device.

The problem to be solved by the invention is that when using the conventional technology, the work of replacing the yarn feeder is performed for each yarn feeder, so the frequency of operation of the robot becomes high, and therefore, one robot Because the number of looms that could be used was small, the problem of creating an economical fully automated system was unavoidable.

Therefore, an object of the present invention is to use a yarn feeder cassette so that the yarn feeder can be replaced not by yarn feeder unit but by yarn feeder cassette units equipped with a plurality of yarn feeder bodies. , increase the number of looms per robot,
An object of the present invention is to provide a yarn feeding device for a loom that allows an economical system to be constructed.

Means for Solving the Problems The present invention has a structure in which a plurality of yarn supplying body holding shafts are mounted on a base plate so that the central axis is concentrated at a predetermined directing point. The gist of the present invention is to include a yarn feeder cassette and a cassette base that removably holds the yarn feeder cassette so that the orientation point substantially coincides with the weft inlet of the loom.

Note that the yarn supplying body cassette may include a gripping portion.

With this configuration, all the yarn feeding bodies on the yarn feeding device are held in parallel at the weft intake port, so that the yarn unwound from any of the yarn feeding bodies is It can be drawn into a loom through the weft intake port and used smoothly as a weft.

On the other hand, since each yarn feeder is mounted on the yarn feeder cassette as a unit, for example, by replacing the yarn feeder cassette with a robot, the yarn feeder cassette can be used as a unit. The work of exchanging the used yarn supply body and the replenishment yarn supply body can be carried out efficiently.

Further, if the yarn supplying body cassette is provided with a gripping portion, the yarn supplying body cassette can be conveyed via this gripping portion, so that the job of replacing the yarn supplying body cassette by a robot can be performed extremely easily.

Example Examples will be described below with reference to the drawings.

The yarn feeding device 10 of the loom includes two yarn feeding body cassettes 20.2.
0 (Figure 1). Here, the yarn feeding device 10 is
A robot is installed to correspond to a loom (not shown), and can freely run along the ceiling of the building or along the aisles, so that it can automatically replace yarn feeders for multiple looms. In combination with 50, it is assumed that a yarn supply body exchange system of a loom is formed.

The yarn feeding device 10 has an upwardly open U-shaped frame body 12 fixed to the top of a leg part 11, and a frame body 12 that is attached to both arm parts of the frame body 12 via cassette bases 12a, 12a.
Two yarn supply body cassettes 20, 20 can be detachably held.

The yarn supplying body cassette 20 has two conical yarn supplying body holding shafts 22 and 22 mounted above and below on the surface side of a rectangular base plate 21 via bending brackets 22a, 22a. figure).

The base plate 21 has a vertical dope tail 21a formed on its back side, and has substantially T-shaped grips 21b protruding from both upper and lower end surfaces. The yarn supplying body cassette 20 as a whole is vertically symmetrical, and K is aligned with the central axis of the yarn supplying body holding shaft 22.22 with respect to the perpendicular line CL passing through the center G of the base plate 21. It is assumed that the beam is assembled so that it passes through a pointing point A separated by a predetermined distance d. Further, the cassette base 12a is formed with a dovetail groove 12b into which the dope tail 21a of the base plate 21 can be smoothly fitted.

By forming the yarn supplying body cassette 20 vertically symmetrically in this manner, it can be used in common on both the left and right sides of the yarn supplying device 10. However, the yarn feeder cassette 20
．． Of course, the thread supplying body holding shafts 22, 22, .・K... is on the central axis of
It is assumed that it is sufficient that the beams are concentrated on a predetermined common pointing point A.

The robot 50 includes a support member 51 and a cassette hanger 52.
and a clamp 53 as main members (FIG. 1).

The support member 51 is a structural member suspended from a traveling vehicle (not shown), and can be driven in the vertical direction via a drive mechanism (not shown).

The cassette hanger 52 is fixed to the lower surface of the support member 51 and includes a pair of hook-shaped hangers 52a, 52a that can be opened and closed left and right by a short stroke air cylinder 52b. When the hangers 52a, 52a are closed,
It is assumed that the gripping portion 21b of the yarn supplying body cassette 20 can be gripped by sandwiching it from the left and right sides (double-dashed line in FIG. 1).

A base end portion of a swing arm 54 is pivotally attached to the support member 51 . That is, the swing arm 54 is horizontally swingable by the motor 54a.

The clamp 53 is attached to the tip of the swing arm 54 in a downward direction via a hanging rod 54b and a base bracket 54c. The clamp 53 is an air cylinder 53
a pair of clamp pieces 53a that can be opened and closed left and right via b;
53a, the whole of which consists of pace bracket 2) 54C
It is moved up and down by a long stroke air cylinder 53C attached downward to the -1- surface of. be able to.

In the yarn feeding device 10, a positioning member L2 and an intake pipe L3 are vertically arranged in the center of the frame body 12.

The positioning member L2 is a short tube member having a ■-shaped notch L2a formed on the front end surface and a pair of guide pieces L2bSL2b that smoothly expand and expand toward the front (Fig. 3). It is arranged so as to face a weft intake port Lla of an automatic weft pull-in device LL attached to a loom (not shown). Further, the intake pipe L3 is located at a standby position (
This is a suction pipe member that can take two positions (solid line in FIG. 3) and an operating position (two-dot chain line in the same figure) in which the positioning member L2 swings backward. Note that a cutter L4 is provided below the positioning member L2 for cutting a thread stretched between the positioning member L2 and the intake pipe L3 in the operating position.

In the yarn feeding device 10 and the robot 50, the latter's cassette hanger 52 is connected to the gripping section 2 of one of the yarn feeding body cassettes 20 in the former.
When the latter is lowered to grip 1b, the turning arm 54 is turned to the left or right to move the air cylinder 53c.
When the clamp 53 is extended, the clamp 53 hangs down the position closest to the front surface of the positioning member L2 and the intake pipe L3, and
(Figures 1 and 3)
.

The operation of the yarn feeder exchange system of the loom having such a configuration is as follows.

First, on the yarn feeding device 10, the yarn feeding body cassette 20.20
A yarn feeder Y is attached to each yarn feeder holding shaft 22, and the yarn Y1 pulled out from any one of the yarn feeders is pulled into the loom via an automatic weft drawing device L1 and used as a weft for weaving. . However, at this time, the yarns Yl, Yl... from the respective yarn supplying bodies Y, Y... are stored in the same yarn supplying body cassette 2.
The two yarn feeders Y and Y on the o are used as a unit, and the end of one winding and the beginning of the other winding are tied in advance to form a so-called tail knot (Fig. 1), and the free end and The end of the winding on the side that is turned is introduced into the loom. By tying the weft in this way, when the yarn Y1 of the first yarn supplying body Y is consumed, the weft yarn is automatically unwound from the other yarn supplying body Y, so that it is continuously unwound. Two yarn supply bodies Y, Y can be consumed.

Similarly, for the yarn supplying body cassette 20 on the side where the yarn supplying body Y currently in use is not attached, the yarns Yl and Yl of the yarn supplying body Y and Y are tied at the ends, and the free ends are tied. The end of the winding on the side with the positioning member L2 and the intake pipe L in the operating position
3 (thread YI3 in Figure 4). In this way, the yarn feeders Y, Y, etc. installed on the yarn feeder 10 are all facing the weft intake ports 1, 1a of the automatic weft pulling device L1 of the loom. shall be. That is, it is assumed that the orientation point A in FIG. 2 almost coincides with the weft intake port Lla in FIG. 3 for both yarn supplying body cassettes 20. The yarn Y1 from the weft can also be unraveled smoothly toward the weft intake port Lla.

Yarn supply body Y on one yarn supply body cassette 20, yarn Yl of Y
, Yl are all consumed or yarn Y1 is broken, and the yarn supplying bodies Y, Y become used yarn supplying bodies, the loom automatically stops, and the automatic weft drawing device L1 disables the weft yarn removal. Through the inlet Lla, a transfer rod (not shown) extends along with the positioning member L2 and grips the thread Yl (thread Y13 in FIG. 4) located on the positioning member L2. Continuing,
By shortening the delivery rod, the automatic weft pulling device L1 can pull this yarn Y1 into the loom and use it as a weft, so the loom can immediately resume operation (Japanese Patent Application No. 62-62290 issue). In addition, when shortening the delivery rod, cutter L4 operates,
At the same time as cutting out the unnecessary excess part of the thread Y1, the intake pipe L
3 returns to the standby position.

Subsequently, the robot 50 replaces the yarn supplying body cassette 20 that has become the used yarn supplying body.

First, move the cassette hanger 52 of the robot 50 to a position directly above the yarn supplying body cassette 20 to be replaced (FIG. 1).
By descending as it is and closing the cassette hanger 52, the gripping portion 21 of the yarn supplying body cassette 20. Grasp b.

Note that at this time, the swing arm 54 is rotated as shown in FIG.
Swivel to the front at right angles to the paper surface (assuming that the case is
If the robot 50 is raised after the gripper 21b is gripped by the threader 52, the yarn feeder cassette 20 can be removed from the yarn feeder 10 by being pulled upward from the cassette base 12a. The robot 50 may be moved as it is and the yarn supplying body cassette 20 may be transported to a predetermined position.

Subsequently, the robot 50 attaches a new yarn supplying body force set 20 equipped with the supplying yarn supplying bodies Y and Y to the yarn feeding device 1-0. That is, if the robot 50 holding a new yarn supplying body cassette 20 is moved to the position where the yarn supplying body cassette 20 was previously discharged at another predetermined location and then lowered, a new The yarn supply body cassette 20 can be installed from above. Note that the replenishment yarn supplying bodies Y, Y on this new yarn supplying body cassette 20 are also
The tail knot is tied in advance, and the robo-nod 50 that is transporting the new yarn supplying body cassette 20 is connected to the yarn end portion which is the free end of the yarn Y1 from the supplying yarn supplying body Y and Y. (illustrated as thread Yll in FIG. 4) is held by the clamp 53.

Next, the robot 50 swings the swing arm 54 to the position shown in FIG. 1, and then extends the air cylinder 53c to drive the clamp 53 downward. At this time, the thread Y1 held by the clamp 53 passes between the guide pieces L2b, L2b at the tip of the positioning member L2, and is guided below the intake pipe L3 which is in the standby position (see Fig. 4). (Illustrated as yarn Y12 in . Therefore,
When the clamp 53 is released by the air cylinder 53b, the end of the thread Y1 can be sucked into the suction pipe L3 and held there. Next, by swinging the intake pipe L3 backward, the thread Y1 can be positioned in a state where it is stretched between the notch L2a of the positioning member L2 and the tip of the intake pipe L2 (Fig. 4). Yarn Y13). Therefore, the replenishment yarn supply body Y mounted on the yarn supply device 10 in this manner
, Y can serve as a preliminary yarn feeder in preparation for the next pulling operation by the automatic weft pulling device L1.

Note that the robot 50 retracts the clamp 53 upward,
Returning the swing arm 54 to its original position, then releasing the cassette hanger 52 and raising the entire cassette hanger 52,
Prepare for yarn feeder replacement work for other looms.

The above explanation is based on the other yarn feeding body cassettes 2 on the yarn feeding device 10.
The same holds true for 0, and therefore, the positioning member L2 and the like are shared by the two yarn supplying body cassettes 20 and 20.

Another example robot 50 may be provided with a guide device that can be opened and closed in parallel with the clamp 53. It is possible to keep the form of the yarn Yl constant when conveying the replenishing yarn supply bodies Y and Y, and also to regulate the path of the yarn Y1 when the clamp 53 is driven downward, so that the yarn Y1 can be moved by the positioning member. It is possible to more accurately guide the front surface of L2. Note that the guide at this time releases the thread Y1 when the clamp 53 is released and the end of the thread Y1 is sucked by the suction pipe L3.

The suction pipe L3 forms a yarn end holder that suctions and holds the yarn end of the yarn Y1 with air. It is also possible to use a device that moves backwards.

Furthermore, instead of using a delivery rod extending toward the positioning member L2, the automatic weft pulling device L1 approaches a suction guide toward an arbitrary yarn feeding body Y on the yarn feeding device 10, and It may be of a type in which the ends of the yarns Y1 attached in a random manner to the surface of the yarn supplying body Y are sucked and pulled out by air (for example, as disclosed in Japanese Patent Application No. 62-9
No. 2627). Since it is not necessary to position the yarn Y1 from the replenishing yarn supply body Y at a specific position, the robot 50
The clamp 52, the positioning member L2 on the yarn feeding device 10, etc. can be omitted. However, the trumpet-shaped suction guide used at this time is, for example, a rotatable suction guide so that it can selectively approach the yarn feeding bodies Y, Y... of the yarn feeding device 10-H. Via the bending arm!
7 and be driven.

In the above description, the number of yarn feeding body cassettes 20 mounted on the yarn feeding device 10 and the number of yarn feeding bodies Y mounted on one yarn feeding body cassette 20 are each an arbitrary number of 2 or more. It goes without saying that this is a good idea. Furthermore, it goes without saying that the yarn supplying body cassette 20 can be effectively used not only when replaced by the robot 50 but also when replaced manually.

As described in detail, according to the present invention, a yarn feeding device includes two or more yarn feeding body cassettes to which a plurality of yarn feeding bodies are attached,
Using this yarn feeder cassette as a unit, the used yarn feeder can be replaced with a replenishing yarn feeder, so when replacing the yarn feeder with a robot, for example, the replacement frequency is The number of yarn feeders on the cassette can be reduced according to the number of yarn feeders on the cassette, and therefore, by increasing the number of looms that can be handled by one robot, the construction cost of the entire system can be greatly reduced. effective.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment, where Figure 1 is an explanatory diagram of the overall configuration, Figures 2 and 3 are perspective illustrations of essential parts, and Figure 4 is an explanatory diagram of the operation of essential parts equivalent to Figure 3. It is. Y... Yarn feeder Yl... Yarn A... Orientation point K... Central axis Lla... Weft intake port 10... Yarn feeding device 12a... Cassette base 20... Yarn feeding Body cassette 21...Base plate 21b...Gripping part 22...Yam feeder holding shaft

Claims (1)

[Scope of Claims] 1) A yarn feeder cassette in which a plurality of yarn feeder holding shafts are mounted on a base plate so that the center axis is concentrated at a predetermined orientation point, and the orientation point is located at a weft take-up point of a loom. A yarn feeding device for a loom, comprising: a cassette base that removably holds the yarn feeding body cassette so as to substantially coincide with an entrance. 2) The yarn feeding device for a loom according to claim 1, wherein the yarn feeding body cassette includes a gripping portion.