JP2709399B2 - Loom feeding device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn feeding device of a loom used for efficiently replacing a yarn feeder for supplying a weft of a loom.

Prior art Applicant previously disclosed that when the supply of the weft supplied from the current yarn supply was cut off due to the completion of use of the yarn supply or the occurrence of a yarn breakage accident, etc. There has been proposed an automatic weft pull-in device capable of automatically restarting the operation of the loom by pulling out the yarn end and pulling it into the loom (for example, Japanese Patent Application Laid-Open No. 61-47849, Japanese Patent Application No. 62-62290).
No., Japanese Patent Application No. 62-92627).

According to these prior arts, the operation of switching the weft from the current yarn feeder mounted on the yarn feeder to the spare yarn feeder can be smoothly automated, so that Used yarn feeder (The empty bobbin when the weft on the yarn feeder is completely used and the yarn feeder in which an arbitrary amount of yarn remains due to a yarn breakage accident during use etc. Including,
If the operation of exchanging a new yarn supply for replenishment (hereinafter, referred to as supply yarn supply) can be automated, this can be a major step toward the completion of a fully automated system in a woven fabric factory.

In such a yarn feeder exchange system, it is assumed that a robot is used to exchange a used yarn feeder on the yarn feeder with a supply yarn feeder. Since the body was worn individually, the robot
One used yarn supply was discharged from the yarn supply device, and instead, one supply yarn supply had to be operated so as to be mounted on the yarn supply device.

According to the related art, since the replacement operation of the yarn feeder is performed for each yarn feeder, the operation frequency of the robot increases, and therefore, the number of looms that can be shared by one robot is increased. However, the problem that it was difficult to construct an economical fully automated system because of the small size of the system was inevitable.

Accordingly, an object of the present invention is to use a yarn feeder cassette to exchange a yarn feeder not in a yarn feeder unit but in a yarn feeder cassette unit in which a plurality of yarn feeders are mounted. It is an object of the present invention to provide a yarn feeding device for a loom in which the number of looms per machine can be increased and an economical system can be easily constructed.

Means for Solving the Problems A configuration of the present invention for achieving the above object is a yarn feeder in which a plurality of yarn feeder holding shafts are mounted on a base plate such that a central axis is concentrated at a predetermined directivity point. A cassette and a cassette base for detachably holding a yarn feeder cassette so that a directing point substantially coincides with a weft intake of a loom, and the gist of the yarn feeder cassette is to provide a gripper. I do.

In addition, the grip part can be protrudedly provided above and below the yarn supply cassette.

According to the structure of the present invention, all the yarn feeders on the yarn feeding device are held opposite to the weft intake, so that the yarn unwound from any of the yarn feeders is also supplied to the weft intake. Through the loom and can be used smoothly as weft yarn. The yarn feeder is mounted on the yarn feeder cassette in units of a plurality of yarn feeders. For example, by replacing the yarn feeder cassette via a robot, the used yarn feeder cassette is used as a unit. The exchange work between the body and the supply yarn supplying body can be efficiently performed. Further, since the yarn feeder cassette can be transported via the gripper, the operation of replacing the yarn feeder cassette by the robot is even easier.

If grippers are provided above and below the yarn feeder cassette, the yarn feeder cassette can be turned upside down and held on the cassette base.

Embodiments Hereinafter, embodiments will be described with reference to the drawings.

The yarn feeder 10 of the loom includes two yarn feeder cassettes 20, 20 (FIG. 1). Note that the yarn feeding device 10 is installed corresponding to a loom (not shown), and is installed along a ceiling surface or a passage of a building, for example, so that a yarn feeder can be automatically replaced with respect to a plurality of looms. It is assumed that a yarn feeder exchange system of a loom is formed in combination with the robot 50 that travels and moves.

The yarn feeding device 10 is formed by attaching a U-shaped frame body 12 that opens upward to the top of a leg 11. On both arm portions of the frame body 12, two yarn feeder cassettes 20, 20 can be detachably held via cassette bases 12a, 12a. Note that the yarn supply cassette 20 is
Two conical yarn feeder holding shafts 22, 22 are vertically mounted on the surface side of a rectangular base plate 21 via a and 22a (FIG. 2).

The base plate 21 has a vertical dovetail 21a formed on the back side, and has substantially T-shaped grips 21b, 21b protruding from both upper and lower end surfaces. The yarn feeder cassette 20 is formed in a vertically symmetrical shape as a whole, and the center line axes K, K of the yarn feeder holding shafts 22, 22 are perpendicular to the perpendicular line CL passing through the center G of the base plate 21. It is assembled so as to pass through a directivity point A separated by a predetermined distance d. In addition, cassette base
A dovetail groove 12b into which the dovetail 21a of the base plate 21 can smoothly fit is formed in the base plate 12a.

By forming the yarn feeder cassette 20 symmetrically up and down in this way, the yarn feeder cassette 20 can be shared on the left and right on the yarn feeder 10. However, the yarn feeder cassettes 20, 20 may be formed exclusively for left and right without being vertically symmetrical. In short, when the yarn feeder cassettes 20 are mounted on the cassette bases 12a, 12a, all the yarn feeder holding shafts 22 , 22... May be concentrated at a predetermined common directivity point A.

The robot 50 includes a support member 51, 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 a vertical direction via a drive mechanism (not shown).

The cassette hanger 52 is mounted on the lower surface of the support member 51. The cassette hanger 52 includes a pair of hook-shaped hangers 52a that open and close left and right by a short stroke air cylinder 52b.
52a. By closing the hangers 52a, 52a, the hangers 52a can be grasped so as to sandwich the grasping portion 21b of the yarn supplying cassette 20 from the left and right (two-dot chain line in FIG. 1).

The base of the turning arm 54 is rotatably connected to the support member 51. That is, the swing arm 54 is
This makes it possible to turn horizontally.

The clamp 53 is attached to the tip of the turning arm 54 downward via a hanging rod 54b and a base bracket 54c. The clamp 53 includes a pair of clamp pieces 53a, 53a that open and close left and right through an air cylinder 53b,
It can be moved up and down via a long-stroke air cylinder 53c that is mounted downward on the upper surface of the base bracket 54c.

In the yarn supplying device 10, a positioning member L2 and an intake pipe L3 are disposed vertically at the center of the frame body 12.

The positioning member L2 is a short pipe member having a V-shaped notch L2a formed in the front end face and a pair of guide pieces L2b, L2b which smoothly expand and spread forward.
(See FIG.), And is arranged horizontally so as to face the weft inlet L1a of the automatic weft pull-in device L1 attached to a loom (not shown). Further, the intake pipe L3 has a standby position (solid line in FIG. 3) in which an opening L3a is opened immediately below the positioning member L2,
It is a suction pipe member that can take an operating position (two-dot chain line in the figure) swinging rearward of the positioning member L2. Note that a cutter L4 is disposed below the positioning member L2 to cut a thread stretched between the positioning member L2 and the intake pipe L3 at the operating position.

The yarn feeding device 10 and the robot 50 are provided with the latter cassette hanger 52.
When lowering the latter so as to grip the gripping portion 21b of one of the yarn feeder cassettes 20, the clamp 53 is pivoted to the left or right to extend the air cylinder 53c, whereby the clamp 53 is positioned by the positioning member. It is assumed that the immediate vicinity of each front surface of L2 and intake pipe L3 can be hung down to reach below intake pipe L3 (two-dot chain line in FIGS. 1 and 3).

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

First, a yarn feeder Y is mounted on each of the yarn feeder holding shafts 22 of the yarn feeder cassettes 20 and 20 on the yarn feeder 10, and the yarn Y1 pulled out from any one of the yarn feeders Y is fed to an automatic weft pull-in device. It can be drawn into the loom via L1 and used as weft. However, at this time, the yarns Y1, Y1.
In a unit of two yarn supply bodies Y, Y on the same yarn supply cassette 20, one end of the winding and the other winding start are previously tied to form a so-called tail knot (FIG. 1). ), The end of the winding at the free end shall be introduced into the loom. By tying the butt like this,
When the yarn Y1 of the first yarn supplying body Y is consumed,
It is automatically unwound from the other yarn feeder Y, and two yarn feeders Y, Y can be consumed in succession.

Similarly, for the yarn feeder cassette 20 on the side on which the currently used yarn feeder Y is not mounted, the yarns of the yarn feeders Y and Y are similarly set.
After tying the Y1 and Y1 together, the end of the winding on the free end side is put on standby between the positioning member L2 and the intake pipe L3 in the operating position (the yarn Y13 in FIG. 4). ). It is assumed that the yarn feeders Y, Y,... Mounted on the yarn feeding device 10 in this manner face the weft inlet L1a of the automatic weft pull-in devices L1 of all the looms. That is, the directional point A in FIG. 2 is assumed to substantially coincide with the weft inlet L1a in FIG.
Therefore, the yarn Y1 from any of the yarn feeders Y can be smoothly unwound toward the weft inlet L1a.

The yarns Y1, Y1 of the yarn feeders Y, Y on one yarn feeder cassette 20
Is consumed, or the yarn Y1 breaks, etc.
When the yarn feeders Y, Y become used yarn feeders, the loom automatically stops. Therefore, the automatic weft pull-in device L1 is
A transfer rod (not shown) is positioned via L1a to the positioning member L2.
To the yarn Y1 on the positioning member L2 (fourth
Hold the thread Y13) in the figure. Next, the automatic weft pulling device L
1 can pull the yarn Y1 into the loom by shortening the delivery rod and use it as the weft.
The loom can be restarted immediately (Japanese Patent Application No. Sho 62
-62290). When shortening the delivery rod,
L4 is operated to cut off the unnecessary margin of the yarn Y1 and return the intake pipe L3 to the standby position.

Subsequently, the robot 50 replaces the thread supply cassette 20 on the side that has become the used thread supply.

First, the robot 50 moves the cassette hanger 52 to a position immediately above the yarn feeder cassette 20 to be replaced (FIG. 1), lowers the cassette hanger 52 as it is, and closes the cassette hanger 52, thereby holding the gripper of the yarn feeder cassette 20. Hold 21b. At this time, it is assumed that the turning arm 54 is turned to the front side at right angles to the paper surface in FIG. When the cassette hanger 52 grips the grip portion 21b, the robot 50 is raised and the yarn feeder cassette 20 is discharged from the yarn feeding device 10 so as to be pulled upward from the cassette base 12a. The robot 50 may move as it is and transport the yarn feeder cassette 20 to a predetermined position.

Subsequently, the robot 50 mounts a new yarn feeder cassette 20 in which the yarn feeders Y, Y for replenishment are mounted, to the yarn feeding device 10.
That is, a new yarn feeder cassette is provided at another predetermined location.
The robot 50 holding the robot 20 moves to the position where the yarn feeder cassette 20 was previously discharged and descends, whereby the new yarn feeder cassette 20 can be mounted on the cassette base 12a from above. Note that the replenishing yarn feeders Y, Y on the new yarn feeder cassette 20 are also tied in advance. In addition, the robot 50 which is transporting the new yarn supply cassette 20 is provided with a yarn end portion (shown as a yarn Y11 in FIG. 4) which is a free end of the yarn Y1 from the supply yarn supply members Y and Y. Is held by the clamp 53.

Next, the robot 50 turns the turning arm 54 to the position shown in FIG. 1, extends the air cylinder 53c, and drives the clamp 53 downward. At this time, the yarn Y1 gripped by the clamp 53 passes between the guide pieces L2b and L2b at the tip of the positioning member L2, and is located at the standby position.
(Shown as a thread Y12 in FIG. 4). Therefore, when the clamp 53 is released via the air cylinder 53b, the yarn end of the yarn Y1 is moved to the intake pipe L3.
Is sucked and held. Next, when the intake pipe L3 is swung rearward, the yarn Y1 can be positioned in a state of being stretched between the notch L2a of the positioning member L2 and the tip of the intake pipe L3 (see FIG. 4). Yarn Y13). Therefore, the replenishing yarn feeders Y, Y mounted on the yarn feeding device 10 in this manner.
Can be prepared for the next pull-in operation by the automatic weft pull-in device L1 as a spare yarn feeder.

The robot 50 retracts the clamp 53 upward,
The swivel arm 54 is returned to the original position, the cassette hanger 52 is released and the whole is lifted, and the preparation is made for a yarn feeder exchange operation of another loom.

The above description has been made on the other yarn feeder cassettes 20 on the yarn feeder 10.
Is exactly the same for
L2 and the like are shared by the two yarn supply cassettes 20, 20.

Other Embodiments The robot 50 may be provided with a guide device that can be freely opened and closed in parallel with the clamp 53. The guide device can keep the form of the yarn Y1 when transporting the supply yarn feeders Y and Y constant, and can regulate the path of the yarn Y1 when the clamp 53 is driven downward, and can control the yarn Y1. Guide can be more accurately guided to the front surface of the positioning member L2. It is assumed that the guide device releases the yarn Y1 at the time when the clamp 53 is released and the yarn end of the yarn Y1 is sucked into the intake pipe L3.

The intake pipe L3 forms a yarn end holder that sucks and holds the yarn end of the yarn Y1 with air. Therefore, this may be replaced with, for example, a mechanism that mechanically grips the yarn Y1 and moves it behind the positioning member L2.

Further, the automatic weft pulling device L1 is replaced with a yarn feeding device instead of using a delivery rod extending toward the positioning member L2.
Move the suction guide toward any yarn feeder Y on 10
The yarn end of the yarn Y1 adhering in a random form to the surface of the yarn supplying body Y may be drawn out by suction with air (for example, Japanese Patent Application No. 62-92627). Since it is not necessary to position the yarn Y1 from the supply yarn feeder Y at a specific position, the clamp 53 of the robot 50, the positioning member L2 on the yarn feeding device 10, and the like can be omitted. However, the trumpet-shaped suction guide used at this time is, for example, provided with a rotatable bending arm so as to selectively approach the yarn feeders Y, Y ... on the yarn feeding device 10. Drive.

In the above description, the number of the yarn feeder cassettes 20 mounted on the yarn feeding device 10 and the number of the yarn feeders Y mounted on the single yarn feeder cassette 20 may be two or more arbitrary numbers.
Further, the yarn feeder cassette 20 can be effectively used even in the case where the yarn feeder cassette 20 is replaced manually without using the robot 50.

Effect of the Invention As described above, according to the present invention, by providing two or more yarn supply cassettes for mounting a plurality of yarn supply units, it is possible to supply used yarn supply units in units of the yarn supply cassettes. Since the yarn feeder can be replaced, the replacement frequency can be reduced in accordance with the number of yarn feeders on the yarn feeder cassette, for example, when performing a yarn feeder replacement operation by a robot. There is an excellent effect that the number of looms that can be shared by one robot can be increased and the construction cost of the entire system can be greatly reduced.

[Brief description of the drawings]

1 to 4 show an embodiment, FIG. 1 is an explanatory view of the overall structure, FIGS. 2 and 3 are perspective views of essential parts, and FIG. 4 is an explanatory view of operation of essential parts corresponding to FIG. It is. Y ... Yarn Y1 ... Yarn A ... Direction point K ... Central axis L1a ... Weft inlet 10 ... Yarn supply device 12a ... Cassette base 20 ... Yarn supply cassette 21 ... Base plate 21b …… Grip section 22 …… Yarn feeder holding shaft

Claims (2)

(57) [Claims] A feeder cassette for mounting a plurality of feeder holding shafts on a base plate such that a center axis is concentrated at a predetermined directing point, and said directing point substantially coincides with a weft inlet of a loom; And a cassette base for detachably holding the yarn feeder cassette, so that the yarn feeder cassette comprises:
A yarn feeding device for a loom, comprising a grip portion. 2. A yarn feeding device for a loom according to claim 1, wherein said grip portion is provided so as to project upward and downward from said yarn feeder cassette.