JPH07111019B2 - Automatic position control device for weft insertion of foil yarn with pattern element of loom - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic position regulating device for a foil yarn weft with a pattern element of a loom, and more particularly to a loom including a rapier or a gripper shuttle as a constituent element. A long winding material of a foil thread which is provided in a portion, for example, a foil thread formed by a cutting foil, which is used in a conventionally known typical forward drawing technique described later and is referred to by a person skilled in the art as the foil insert (weft). (Synonymous with putting in) The long wound material corresponding to the one connected in the length direction in the order to be inserted is arranged at a fixed position, and the yarn end of the foil yarn drawn from this is made to stand by at a predetermined position, By repeating the weft insertion under the specification that the thread end of the thread is grasped by the rapier or the gripper shuttle and foil-inserted, and the weft-inserted foil thread is cut by the mechanical force-driven scissors at a fixed position. , Its adjacent foil Relates patterned element with foil yarn weft automatic position regulating device for the loom used to weave the fabric representing at least a portion of the pattern due to accumulation of the fabric warp direction of the pattern elements of Hakuito with.

Conventional technology and its problems It is conventionally known to express a pattern in a forward-drawing technique by weft-inserting a foil thread with a pattern element by the above-mentioned method, and a pattern is obtained by a typical forward-drawing technique. The method of drawing, that is, the so-called draw foil flat yarn obtained by slitting a large number of narrow foils each having a pattern on the surface of a base sheet such as a Japanese paper having a width corresponding to the width of the woven fabric in a required order By inserting the weft into the book, the weft insertion cycle is superior to the pattern revealing method for reproducing the pattern originally shown on the original fabric on the woven fabric, and high productivity can be obtained.

However, on the other hand, in the above-mentioned forward drawing technique pattern manifestation,
If the foil thread with the pattern element is not inserted in a position where there is substantially no deviation in the weft direction of the fabric, the pattern collapses and a good pattern is achieved by the accumulation of the pattern elements of the adjacent foil thread and foil thread. Not done. In addition, the weft insertion of the foil yarn in the loom is carried out under the guidance of the pinch roller to feed the foil yarn from the long roll of foil yarn, but it is caused by the vibration of the loom and the unevenness of the foil yarn tension due to temperature and humidity changes. In many cases, misalignment occurs.

Conventionally, in a loom used for weaving a woven fabric showing a pattern by the forward pulling technique shown above, a means for ensuring that the weft insertion of the foil yarn is automatically position-controlled so as not to cause the pattern collapse. Not yet embodied. By the way, it is the actual situation that in the past, an operator sometimes manually corrects the weft misalignment of the weft insertion foil yarn.

In addition, the conventional weft insertion system using this type of rapier or gripper shuttle has variations in the standby posture and position of the foil yarn end at a predetermined position, and the range of types of foil yarn that can be applied to the same loom is: There were considerable restrictions on one or more of the material, thickness, width, thickness and the like.

INDUSTRIAL APPLICABILITY The present invention is capable of automatically controlling the weft insertion of a foil thread with a pattern element so as not to cause pattern collapse in weaving by a loom of the type described above, and further, in one or more of material, thickness, width, etc. It is possible to apply a wide variety of foil yarns that far exceed conventional ones. Therefore, even if it is a complicated and delicate and / or elegant pattern-like picture pattern that can be seen in the inner lining, it is a good mode, and it is a rapier. Alternatively, it is an object of the present invention to provide a device which can be efficiently and simply revealed by a forward pulling technique by gripper shuttle weft insertion.

Means for Solving the Problems The above object of the present invention is achieved by an apparatus having the following configuration.

Woven foil foil drawn from a long roll of patterned filament thread with at least three position marks at a fixed position in the area corresponding to the fabric ears in each foil area. A loom for, in which the long roll of foil yarn is placed at a fixed position, is foil-wrapped by a rapier or gripper shuttle, and the foil-wrapped foil yarn is cut by scissors at a fixed position. In a loom for weaving a drawn foil woven fabric, at least one foil insertion area corresponding to the shed side of the foil thread drawn out from the long length of wound foil is set as a thread drawing line extending in a constant space, A plurality of mark sensors for detecting the position marks of the foil yarn in the constant yarn drawing line are provided side by side along the line, and the foil yarn in the line is placed at the position of the constant yarn drawing line by the rapier or the gripper shuttle. Doing And when the forward movement is approaching or reaching the forward movement limit during forward movement, the restraint is released when the forward movement limit is approached or reached, and the release is inserted into the rapier or gripper shuttle. During the movement, a presser foot to be continued is arranged, and the lever which is arranged at a fixed position on the return traveling path of the rapier or gripper shuttle and drives the thread gripper of the rapier or gripper shuttle is collided to release the thread gripper. Allow the contact to be displaced in the weft direction, and if applicable,
A driving machine that is operated based on the weft deviation detection of the foil yarn position mark in the constant yarn drawing line by the mark sensor is drivingly coupled, and the mark sensor has at least one arrangement for each of the position marks,
In addition, it is arranged to detect a small weft deviation of the foil yarn in the above-mentioned constant yarn drawing line, one arranged to detect a middle weft deviation, and one to detect a large weft deviation. The mark sensors are composed of two sets, one for detecting the weft deviation to one side of the foil yarn and the other for detecting the weft deviation to the other side. The driving machine stops by driving in the normal or reverse direction so as to displace the contact by a predetermined amount to the required side in the fabric weft direction in accordance with the weft deviation of the foil yarn in the constant yarn drawing line, and the non-operating state. An automatic position-regulating device for a weft insertion foil foil with a pattern element of a loom.

Action In the present invention, the drawn-out foil yarn from the long winding material of the foil yarn having the pattern element in the required position is pulled out from the long wound material, and the yarn end thereof is made to stand by at a predetermined position and at least the shed On the side of the weft insertion area, a yarn pulling line equivalent to one weft insertion area is made to stand by as a yarn drawing line extending in a certain space, grasped by a rapier, and weft-inserted. When the thread gripping body hits the contact and is released, the weft-inserted foil thread is cut at a predetermined position by the mechanical force-driven scissors in a fixed position, and the likewise, the pattern element by the rapier is similarly cut. A pattern in which the weft insertion of the attached foil yarn and the cutting at a predetermined position by scissors are repeatedly performed, and the above-mentioned foil yarn and the pattern element of the foil yarn are adjacent to each other on the fabric in the warp direction of the fabric to form a parallel accumulation of the pattern elements. Is revealed in the fabric.

In this weft insertion, when the weft-inserted foil yarn is in the normal weft-insertion position, the weft insertion line of the pattern-equipped foil yarn corresponding to the one weft insertion area, that is, the constant yarn drawing line, If so, the position mark of the foil yarn on the line also occupies a normal position, which is detected by a plurality of mark sensors at fixed positions, and the drive machine for releasing the rapier yarn gripping body does not operate.

When a small (usually 0.4 to 1.2 mm) or medium (usually 1.2 to 2 mm) weft deviation that requires weft insertion and correction with a rapier occurs (note that weft deviation of less than 0.4 mm is usually within the allowable range) The position mark of the foil yarn in the constant yarn drawing line is also deviated, and the degree of the deviation and the left or right deviation are small for detecting the deviation of the deviation or for detecting the deviation of the deviation of the deviation of the deviation. Is detected, and based on this detection, the corresponding driving machine is driven forward or reverse to stop so as to displace the yarn gripping body releasing contact by a predetermined amount to the required side in the fabric weft direction. The time when the rapier thread gripper collides, that is, the time when the rapier thread gripper is opened, is restricted to the time corresponding to the above weft deviation, and the patterned foil thread is brought back to the normal weft insertion position according to this restriction. When a large (usually 2 mm or more) weft misalignment occurs, this is detected by a large weft misalignment detection mark sensor, and based on the detection, the hit driving machine is placed in a non-operating state.

When the rapier is at rest and when the foil yarn in the above-mentioned constant yarn drawing line approaches a part corresponding to the presser foot by the presser arranged at the position of the line and when the rapier is moving forward, it approaches the forward movement limit. Be bound until or until it is reached. Therefore, the fixed position of the constant yarn drawing line is not substantially broken by vibration of the loom.

In the weft insertion of the foil yarn by the rapier, the degree of weft misalignment that occurs is not the same. If the position of the rapier yarn gripping body releasing contact is changed to correct the weft misalignment, the changed position will be affected by the high speed running of the rapier and the vibration of the loom. The position regulation of the foil yarn is not always appropriate in practice.

On the other hand, a sensor that is suitable for practical use as a sensor that detects the position mark on the foil thread has a width of several meters even with a small sensor.
mm.

Thus, by arranging the position mark sensor at a fixed position, when the weft-inserted foil yarn has a weft displacement, the degree of the weft displacement is detected by the displacement of one position mark on the foil yarn with respect to the sensor. Then, even if a plurality of sensors are juxtaposed, the displacement can be detected only with a relatively rough degree. For this reason, the specification that the position of the rapier thread gripping body opening contact is changed based on the one position mark and the detection of the weft deviation by the sensor does not allow sufficiently detailed position regulation. By the way, the change of the position may cause a new weft deviation, and sometimes it develops in a chain reaction, and the weft insertion of the foil yarn meanders.

In the present invention, this is dealt with by specifying the loom to which the device of the present invention is added to have a predetermined configuration and by arranging a specific mark sensor.

In the present invention, as a loom to which the device of the present invention is added,
A loom configured to arrange a required number of long-windings of foil yarn with position marks and pattern elements at a predetermined position at a predetermined position, and to foil-wrap them. At least one foil insertion area of the foil yarn drawn from the object on the shed side is defined as a yarn drawing line extending in a fixed space, and the fixed position of the constant yarn drawing line is maintained for a predetermined period. As a mark sensor for detecting the position mark of the foil yarn in the constant yarn drawing line, at least one of each of the position marks is arranged, and the foil yarn in the constant yarn drawing line is specified. Including arrangements for detecting small latitude deviations, arrangements for detecting middle latitude deviations, and arrangements for detecting large latitude deviations Has applied .

According to this configuration of the present invention, the detection of a small weft deviation is performed by the mark sensor for detecting the deviation, the detection of the middle weft deviation is performed by the mark sensor for detecting the deviation, and the detection of a large weft deviation is performed by the deviation detection. Mark sensor,
The degree of weft misalignment is classified into small, medium, and large, and the three kinds of dispositions described above are effectively detected by the function of at least one sensor for each position mark, and small misalignment and medium weft Regarding the deviation, it is possible to correct the position of the hit according to each, and in the case of a large weft deviation, the driving machine for the hit can be kept inactive, and at that time, the operation of the loom itself Just stop it. Therefore, in the present invention, it is possible to embody the concept of finely adjusting the position of the contact finely by the mechanical force based on the detection of the deviation of the foil yarn by applying the position mark and the mark sensor.

As described above, according to the present invention, when the rapier thread gripper is opened, the foil by the rapier is finely and properly regulated so as to immediately respond to both the normal position weft insertion and the weft misalignment at a predetermined time. Since the weft insertion of the yarn can be performed and the fixed position of the constant yarn drawing line can be guaranteed, the pattern regulation of the foil yarn can be avoided by the automatic regulation of the weft insertion position by the system. Moreover, this can be achieved in the present invention for the purpose as described above.

Thus, according to the present invention, it is possible to apply a wide variety of foil yarns far exceeding the conventional ones in one or more of the material, the thickness, the width, etc. Therefore, it has been considered to be extremely inefficient and difficult in the past. However, even a complicated and delicate and / or elegant design pattern such as that seen in the interior can be used as a good mode, and can be efficiently and simply expressed by the rapier weft insertion as a forward drawing technique. it can.

Examples Next, examples of the present invention will be described with reference to the accompanying drawings.

In the figure, (1) is a rapier in a loom, and its yarn gripping surface (1a) is oriented in the vertical direction.
(2) is a mechanical force-driven scissors at a fixed position, (3) is a long wound material of foil yarn, and the rapier (1) is reciprocated in the opening of the warp in the same manner as the conventional one, and the scissors ( In 2), shearing operation is performed in the same manner as the conventional method. The scissors (2) occupy the side (left side in FIG. 1) where the movable blade holder (2b) for attaching and shearing the movable blade (2a) moves away from the fabric ear with respect to the scissors fixed blade (2c). ing.

The rapier (1) has a size corresponding to the width of the foil yarn in the vertical direction and the horizontal direction at the portion of the yarn gripping portion of the rapier facing the side of the foil yarn (3a) extending to the portion. It is better to create a spacious space (29) (see Figure 10). The right side surface of the rapier (1) in FIG. 10, that is, the side surface on the side where the tip of the rapier passes through a portion of the thread end (3a ′) described later of the foil thread (3a), the thread end ( It is preferable that chamfers (30) as shown in FIG. 10 are provided in order to minimize pushing of 3a ') in the direction corresponding to the right side of FIG.

The long winding material (3) of the above-mentioned foil yarn is a flat yarn made of a so-called pulling foil used in a pattern revealing method by a conventionally known typical forward drawing technique, in the order of weft insertion, in the length direction. It is sufficient to apply the one corresponding to the one connected to the above and having a pattern element (not shown) forming a pattern in parallel in the warp direction of the woven fabric at a required portion. In each of the one weft insertion range, at the fixed position of the part corresponding to the ears of the fabric,
Three position marks (4) are preliminarily provided at intervals. On the long length of the wound foil thread (3), a surface indication mark (31) is provided on the front surface or the back surface at another fixed position in the area corresponding to the selvage of the fabric in each one-weft insertion area. Is good. In the case of the drawing, the surface indication mark (31) is arranged in a position corresponding to both the left and right ears of the fabric in each one-weft insertion area of the long length wound foil (3) (one surface in the figure). Only the display mark is shown.).

The long roll of foil yarn (3) is placed at a fixed position on the loom, from which the foil yarn (3a) passes through the yarn path (5), the pinch feeding roller (6) and the yarn path (7). After that, the yarn end is exposed at a predetermined position. The delivery amount of the pinch delivery roller (6) is slightly smaller than the withdrawal amount of the foil yarn (3a) accompanying weft insertion described later by the rapier (1).
The yarn path (5) is shown in perspective in the figure for the sake of ease of understanding it, but its installation corresponds to the fact that the plane matching the inner space of the yarn path traverses the drawn foil yarn. It is a mode to do. The draw-out foil thread (3a) is a thread draw-out line that extends in a certain space by a suitable means such as a thread path or a guide roller for at least a part of the yarn entry area corresponding to one weft insertion area on the shed side. l). In the case shown, this is done by means of a yarn path, which is filled with the yarn path (7) and the following yarn path (15).

A plurality of mark sensors for detecting the position marks (4) of the foil yarn (3a) on the constant yarn drawing line (l) are juxtaposed along the line (l). The plurality of mark sensors are arranged at least one for each of the three position marks (4), (4), (4), for example, for the left and right position marks as shown in FIG. , One position mark is provided for the middle position mark, or one position mark is arranged for each position mark as shown in FIG. The arrangement thereof is such that a small weft deviation of the foil yarn (3a) in the constant yarn drawing line (l), for example, 0.
An arrangement corresponding to detecting a latitudinal deviation of 4 to 1.2 mm, an arrangement corresponding to detecting a central latitudinal deviation, for example, a latitudinal deviation of 1.2 to 2 mm, and a large latitudinal deviation, for example, a latitudinal deviation of 2 mm or more. This is the arrangement corresponding to. In the format of FIG. 3, the mark sensor occupies the relational position shown in FIG. 3-1 with respect to the position mark in the small displacement detection corresponding arrangement, the middle displacement detection corresponding arrangement, and the large displacement detection corresponding arrangement. The position is the position, and in the form of FIG. 4, the mark sensor occupies the relative position shown in FIG. 4-1 with respect to the position mark. In FIGS. 3-1 and 4-1, arrows indicate a vertical axis of each mark sensor (optical axis of an optical sensor described later), and the vertical axis, that is, the position occupied by the mark sensor is a constant thread drawing line ( This is a case where the foil yarn (3a) in l) has no weft deviation. The length of each position mark may be appropriately determined according to the arrangement of the mark sensor. In the arrangement shown in FIG. 3-1, for example, the left and right position marks are 6 mm and the middle position mark is 4 mm. Yes, the fourth
In the arrangement of FIG. 1, for example, each position mark is 2.4 mm. In either of the above arrangements, the distance between the position marks is the appropriate length for the diameter of the mark sensor, for example 3 m.
It should be m.

3 and 4, (8-1) is the above small,
Among the medium and large latitude deviation detection mark sensors, the mark sensor for detecting the lower limit for the deviation of 0.4 mm or more, (8-2) the mark for detecting the lower limit of the deviation of 1.2 mm or more The sensor (8-3) is a mark sensor for detecting the lower limit of the deviation of 2 mm or more. The lower limit of small weft deviation (0.4m
m) Detection mark sensor is the lower limit (2mm) of large weft deviation.
Also serves as a detection mark sensor. These mark sensors (8-1), (8-2), and (8-3) are for detecting the weft deviation to one side of the foil thread (3a) and for detecting the weft deviation to the other side. It is composed of two things. In any of the formats shown in FIGS. 3 and 4, one of the above-mentioned weft deviation detection mark sensors having a required position is also used for one side and the other side, and corresponds to the middle position mark. It is a thing.

The plurality of mark sensors described above are collectively shown as one block in FIG. 1, and are denoted by reference numeral (8). An optical sensor such as an optical reflector sensor can be applied as the mark sensor, and a color detected by the optical sensor, for example, a black color mark can be applied to the position mark (4).

When weft insertion, which will be described later, is performed by the rapier (1), a sensor (32) for detecting the surface display mark (31) of the foil thread under the weft insertion is arranged at a position corresponding to the mark (31). . Needless to say, the sensor (32) has a mark (3
When 1) is on the front side of the foil thread (3a), it corresponds to the mark (31) on the front side of the weft inserting foil thread, and when the mark (31) is on the back side, the mark on the back side of the foil thread (31) This is the layout of the corresponding parts. An optical sensor similar to a mark sensor can be applied to the surface display mark detection sensor (32), and a color mark of a color sensed by the surface display mark detection sensor (32) can be applied to the mark (31). .

(9) is a clamp for the cutting end of the drawn foil yarn, and the clamp (9) corresponds to the back surface (the left surface in FIGS. 1 and 5) of the scissors movable blade holter (2b). Are arranged at fixed positions. The clamp (9) is urged by a spring having a strength such that the clamped thread (9) clamps the cut thread end below by pulling the thread end under the grip of the rapier (1) described later. Is pressed to the holder (2b) side. (10) is a spring for urging the spring, and (11) is a spring strength adjusting screw. Clamp (9), Spring (10)
And the adjusting screw (11) is mounted on a fixed mount (12) on the loom frame (not shown). (13) is a pressing pin for the clamp (9), and (14) is a ball interposed between the pin (13) and the spring (10).

A yarn path (15) for the line is provided slightly upstream of the constant yarn drawing line (l) (left side in FIG. 1) from the clamp (9). The yarn path (15) may have a groove on the upper surface for guiding the yarn going of the foil yarn (3a) or a projecting body extending upward.

Until the rapier (1) is at rest at a point of the constant yarn drawing line (l), preferably further upstream of the yarn path (15), and when the rapier (1) approaches the forward movement limit during its forward movement. Alternatively, the foil yarn in the line (l) is constrained under pressure until it is reached, and the constraint is released when the rapier (1) approaches or reaches the forward limit, and the release is inserted into the rapier (1). Presser foot to continue during exercise (1
6) Place. Control of pressing and releasing the presser foot (16) at a predetermined time may be performed through an interlocking mechanism by the operation of an appropriate means, for example, an appropriate moving member of the system for reciprocating the rapier (1). (17) is a fixed presser base facing the presser foot (16).

(18) is arranged at a fixed position on the backward (weft insertion) traveling path of the rapier (1), and the tip of the lever portion (19a) of the rapier thread gripping body (19) collides with the thread gripping body ( 19) is opened, and the corresponding rib (18) is allowed to displace in the weft direction on the loom, and the driving machine (20) is drivingly coupled to the corresponding rib (18). A small reversible motor, for example, may be applied to the drive machine (20), and the hit (18) and the drive machine (20)
The drive connection of, for example, the nut (21) at the base of the hit (18)
Is fixed, and the adjusting screw (22) coupled to the output shaft of the drive machine (20) is screwed into the nut (21).

The drive device (20) includes the mark sensor (8-1),
(8-2) and (8-3) are connected via the sequence control device (23). A computer can be applied to this sequence control device (23). The computer processes an input / output signal for executing the operation amount regulation of the drive machine (20) and an input / output signal for executing forward / reverse rotation, stop, non-operation control of the drive machine (20), which will be described later. Interface, a memory for storing necessary data for execution of the operation amount regulation, and necessary data for execution of the normal / reverse rotation, stop / non-operation control, and an operation amount regulation execution, normal / reverse rotation, It includes a microprocessor that performs arithmetic processing for executing stop and non-operation control.

The computer, mark sensor (8-1), (8-
The relationship between 2), (8-3), and the driving machine (20) is shown as a part of FIG. 6 as a block diagram. The sixth
In the block diagram shown in the figure, the arrangement of the mark sensor is shown in FIG. The block diagram of the mark sensor layout of FIG. 4 has been omitted but will be apparent to those skilled in the art.

(24) shows a spring which makes the rapier thread gripping body (19) tend to be always closed. (25) is vertically movably suspended between the pinch delivery roller (6) and the yarn path (7) in the middle of the foil yarn (3a), if necessary. It is a weight board for removing the looseness of the foil thread. The left and right side edges of the weight plate (25) are fitted in guide grooves (not shown) that extend in the vertical direction and face each other, and the vertical movement is guided by the grooves. When the weight plate (25) is provided, a sensor (26) for catching the reflected light from the reflecting surface is arranged at a fixed position on the side corresponding to the reflecting surface. The sensor (26)
Is electrically or electronically connected to a driving machine (not shown) such as a motor of the pinch feeding roller (6), and the roller (6) is predetermined based on the position detection of the weight plate (25). Sometimes drive, stop. As the sensor (26), an optical sensor similar to the mark sensor described above can be used. The pinch delivery roller (6) is made to operate during the following weft insertion by the rapier (1). (28) shows an actuating lever of the scissors movable blade holder (2b), the lever (28) interlocking with the reciprocating motion of the rapier (1), through an interlocking medium (not shown), and at a predetermined time as shown in FIG. Is rotated in the direction.

Before the rapier (1) releases the grip of the weft-insertion foil thread described below and before the scissors (2) cuts the foil thread, for example, immediately before the opening and the cutting (however, the opening and the cutting are The weaving machine is provided with a weft-insertion detection sensor (36) that operates when the operations are performed at substantially the same time) to detect weft insertion. The sensor (36) may be similar to a mark sensor, a proximity switch, or the like, and the movable member in the foil yarn weft inserting device, for example, the rapier (1) or another movable member interlocked therewith, is the foil yarn weft. When it is displaced to a predetermined position during insertion, it is operated at a predetermined time by an appropriate method such as disposing at a position corresponding to detecting this.

When the following weft insertion is performed by the rapier (1), warp splicing yarn is applied at a location corresponding to the edge of the weft-inserted foil thread and at a location other than the surface indication mark detection sensors (32) (32). It is preferable to provide an appropriate number on the loom.
The warp yarns are woven with the weft insertion foil yarn ears by the same means as in the general warp yarns, or are woven with the weft insertion foil yarn ears at the lower surface of the ears. It is sufficient that the weave is sparse in the warp direction. The warp warp yarns are shown in FIG. 2, in which the interwoven warp warp yarns are indicated by the numeral (33) and the lower surface cross warp warp yarns are indicated by the numeral (33 '). The warp yarns shown in FIG. 2 are used in combination with the interwoven yarns and the bottom cross yarns. Warp-in foil yarn Warp yarn (3
3) has its predetermined end wound around the fabric take-up beam (not shown) of the loom as it does for normal warp (W). The warp yarn (33 ') does not need to be wound around the take-up beam, and may be placed under a proper tension.

A loom equipped with the device of the present invention including the above-mentioned parts does not have a groove even if it is a general shuttle type power loom. In the illustrated embodiment of the present invention, a loom is a general shuttle type power loom (Fig. 2). In Fig. 2, reference numeral (34) denotes a shuttle box of the power loom and (35) denotes a reed. . In the case of a general shuttle type power loom, the shuttle is used for the same purpose as in the past, and the above-mentioned respective parts including the rapier (1) are additionally provided in the power loom, and the rapier (1 )
A shedding loom is provided with shedding control means for causing the warp yarn to perform shedding movement required for the foil yarn weft insertion. The warp opening means known per se can be applied to this opening control means.

The automatic weft insertion position regulation of the illustrated apparatus of the present invention is as follows.

A pattern in which the long end of the foil yarn (3) is drawn out through the yarn path, (5), the roller (6), the yarn paths (7) and (15), and the yarn end is exposed at a predetermined position. Attached Foil Thread (3
a) is in a standby state in preparation for weft insertion by the rapier (1), the thread end of which is attached to the back surface of the scissors movable blade holder (2b) and a spring (10) attached to the back surface thereof. It is clamped between the front surface of the clamp (9) which is pressed by force. Under this standby condition, the foil thread (3
In a), a yarn drawing line (l) extends in a space in which the yarn advance corresponding to at least one weft insertion area on the shed side extends in a constant space. In the standby state, the foil yarn (3a) has its yarn end portion (3a ') in an oblique posture as shown in FIG.

When the weight plate (25) is provided, the weight plate (25) occupies the position lowered by the weight of the foil yarn (3a) in the standby state, and the weight plate (25) The sensor (26) faces the reflective surface.

While the foil yarn (3a) is in the standby state, the rapier (1) moves forward (runs to the left in FIG. 1), and the position of the yarn end portion (3a ') of the foil yarn in the standby state is fixed to the rapier. Side thread grip (27)
, The rapier (1) reaches the forward limit. At this time, in the thread gripping portion (27), the side surface (27a) corresponding to the upper side in FIG. 6 corresponds to the lower side in FIG. 6 of the thread end portion (3a ′). Then, it is pushed a little in the direction corresponding to above, and passes through the part. When the rapier (1) advances, the presser foot (16) presses and restrains the foil yarn (3a) of the line (l) until it approaches or reaches the advance limit.

When the rapier (1) is switched from the forward limit to the backward movement and the thread gripping part (27) passes the position of the thread end (3a ′) at the beginning of the backward movement, the thread end (3a ′) The yarn gripping surface (1a) in the vertical direction between the gripping portion (27) and the yarn gripping body (19) is clamped by the spring (24) biasing the yarn gripping body (19). . In this grip, a part of the thread end (3a ') is twisted 90 degrees in the direction around the axis (clockwise or counterclockwise in Fig. 10), but the space (29)
If there is, the presence of it prevents the twisted portion except the gripped portion from coming into contact with the upper surface of the thread gripping body (19) or the like. After that, the foil yarn (3a) is weft-inserted by the further backward movement of the rapier (1). Prior to this, the presser foot (16) holding the foil thread (3a) above is the rapier (1).
When is approaching or reaching the forward limit, the foil thread (3a) is reset to release the pressing constraint. The opening of the foil thread (3a) is performed during the weft insertion movement of the rapier (1),
Continued.

In the early stage of the above-mentioned return of the rapier (1), the rapier (1)
The weight plate (25) is lifted by the increase of the drawing tension of the foil thread (3a) as the backward movement of the weight plate (25) is provided. Then, when the weight plate (25) occupies a position above the sensor (26), this
6) detects, and based on that, the pinch delivery roller (6) is driven to deliver the foil yarn (3a). The feeding amount of the foil yarn (3a) of the roller (6) is slightly smaller than the drawing amount of the foil yarn due to the retreat of the rapier (1), and therefore the foil yarn that is being wefted maintains a predetermined drawing tension.

When the rapier (1) reaches the home position in the backward movement, the tip of the lever portion (19a) of the rapier thread gripper (19) collides with the hit (18), and the thread gripper (19) is released. , Release the grasping of the yarn end portion (3a ') by the rapier yarn grasping body (19).

From the beginning of the advance of the rapier (1), when weft insertion by the rapier (1) is appropriate, for example, the rapier thread gripping body (1
Until the point slightly before the opening of 9), the scissors movable blade holder (2b) is closed together with the movable blade (2a) with respect to the fixed blade (2c), that is, outside the range of the rapier (1). (FIG. 7), and when the time point is reached, the holder (2b) rotates counterclockwise in FIG. 7 together with the movable blade (2a), and after the state shown in FIG. The fixed blade (2c) is displaced to an open position (Fig. 9), and then it is rotated in the clockwise direction in Fig. 9 to rotate the movable blade (2a) and the fixed blade (2c). A predetermined part of the thread end (3a ') of the foil thread (3a) is sheared.

The thread end (3a ') of the foil thread (3a) that is sheared at this predetermined location
Is a finger portion ((b) of the holder (2b) that is parallel to the movable blade (2a) in the preceding step of the rotational movement when the movable blade (2a) is sheared to move the holder (2b). 2
When the holder (2b) is pushed further downward by hitting the lower edge of b ') and further moved by turning the holder (2b), the yarn of the portion adjacent to the front side (left side of Fig. 1) of the clamp (9). The end portion (3a ') is attached to the upper edge of the clamp (9) by the holder finger portion (2
Immediately after being contacted by b '), the movable blade (2
Fig. 9 (a) Fig. 9 clockwise rotation finally cuts the holder (2b), and then the holder Fig. 9 clockwise rotation causes the lower edge of the holder finger (2b ') to contact the lower edge. The thread end portion (3a ′) of the portion to be pressed is pushed downward, and the contact portion substantially corresponds to the holder (2b) [strictly speaking, the holder finger portion (2b ′)
] It is clamped between the rear surface and the front surface of the clamp (9).

The time at which the thread end (3a ') is cut by rotating the movable blade (2a) in the clockwise direction in FIG. 9 may be set to coincide with the time when the rapier thread gripper (19) releases the thread grip. When the yarn end portion (3a ') is cut, the presser foot (16) again presses and restrains the foil yarn (3a) of the constant yarn drawing line (l).

After the rapier (1) has finished retreating, the delivery roller (6) continues to operate, whereby the tension of the foil yarn (3a) after the roller (6) is lowered and the weight plate (25) is lowered (however, (When there is a weight plate (25)). When the weight plate (25) descends to a position facing the sensor (26), the sensor (26) detects this and the delivery roller (6) is stopped accordingly.

When the weight plate (25) is not provided, the delivery roller (6) may be driven and stopped when required by the same means as the foil yarn delivery roller in the conventional rapier (or gripper) loom.

In the same manner, for each reciprocating motion of the rapier (1), one weft insertion of the foil with a pattern element and cutting by the scissors (2) at a predetermined location, that is, a location corresponding to the one weft insertion area are performed. ,
A pattern in which the adjacent weft-inserted foil yarns and the pattern elements of the foil yarns are juxtaposed in the warp direction of the fabric and the pattern elements are accumulated in parallel is represented on the fabric. Then, the weft-inserted foil yarn (3b) is woven with the warp yarn (W) on the loom ... the ears extending outside the parallel body with the warp yarns (33) ..., and the lower surface of the ears. The warp yarn (33 ') and the warp yarn (33') intersect with each other, that is, the ear portion is placed on the warp yarn (33 '). Weft insertion foil yarn (3b) by the weaving and crossover
The warp (W) ... Vertical locating property of the portion outside the parallel body is secured.

In the above weft insertion, when the weft-inserted foil yarn with a pattern element is not weft-shifted, the foil yarn (3a) in the constant yarn drawing line (l) is also in the correct position without weft-shift and prepared for withdrawal. As a result of waiting, the position marks (4), (4) and (4) of the foil thread (3a) of the line (l) occupy normal positions. In this case, the position mark (4) (4)
(4) is the corresponding mark sensor (8-1), (8-
2), (8-3), and the drive (20) of the hit (18) does not work. This operation control is regulated by the sequence control device (23).

If there is a misalignment in the weft insertion of the foil yarn (3a) by the rapier (1), the foil yarn (3a) in the constant yarn drawing line (l) is accordingly moved in the left-right direction in FIG. Position, in other words, the position marks (4), (4) and (4) of the foil yarn (3a) on the line are displaced in the weft direction.

Now, in the mark sensor arrangement form of FIG. 3, the foil thread (3a) in the line (l) moves to the right (or left).
If we make a deviation of 0.4 to 1.2 mm (small deviation),
This is detected by the left (or right) mark sensor of the mark sensors (8-1) (8-1) [only the left (or right) mark sensor deviates from the corresponding position mark (4). Position.] Based on this detection, a position that immediately responds to this small weft misalignment so that the next weft-insertion foil yarn becomes the normal weft-insertion position (18)
Under the control of the sequence control device (23) so that the driving machine (20) occupies a predetermined amount,
It is rotated normally (or reversed) and stopped. In the format of Figure 3,
Foil thread (3a) in line (l) is to the right (or left)
If there is a latitudinal deviation of 1.2 to 2 mm (middle latitudinal deviation), in this case, this is marked sensor (8-1) (8
The left (or right) mark sensor of (-1) and the left (or right) mark sensor of the mark sensors (8-2) and (8-2) detect [these two left (or right) Only the mark sensor on the right side is the relevant position which deviates from the corresponding position mark (4). ], Based on this detection, against this middle weft misalignment, the position (18) that immediately responds to the next weft insertion foil yarn becoming the normal weft insertion position will hit (18) prior to the next weft insertion, The drive machine (20) is controlled by the sequence controller (23),
A predetermined amount of normal (or reverse) rotation is performed and then stopped. In the format shown in FIG. 3, when the deviation of the weft of the foil yarn (3a) of the line (l) is 2 mm or more (large deviation) in the right direction (or the left direction), the mark sensor (8-1) ) (8-1) left (or right) mark sensor, mark sensors (8-2) (8-2) left (or right) mark sensor, and further mark sensor (8-3) Is detected [the left side (or right side) of these two and the latter mark sensor become a relative position deviating from the corresponding position mark (4).] Based on this detection, the sequence controller (23 Under the control, the driving machine (20) is placed in a non-operating state and the operation of the loom itself is stopped.If there is a large weft deviation, the foil yarn (3a) of the constant yarn drawing line (l) Can be manually returned to the normal position. Check return normal position, a suitable method, for example, mark sensor (8-1) (8-1), (8-2)
When a pilot lamp (not shown) is connected to each of (8-2) and (8-3) and the corresponding position mark (4) faces these mark sensors, the mark sensor is turned on by the facing. This can be done by observing that the pilot lamp displays. If necessary, the hit (18) may be manually repositioned, for example, by manually turning the adjusting screw (22).

In the mark sensor arrangement form of FIG. 4, if the weft deviation to the right (or left) is 0.4 to 1.2 mm, the mark sensor (8-1) (8-1) [8-3, 8
-Also serves as -3], and the left (or right) mark sensor detects [only the left (or right) mark sensor becomes a related position that deviates from the corresponding position mark (4)], 1.2 to 2 mm In the case of rightward (or leftward) weft misalignment, this is detected by the mark sensor (8-1) (8-1) on the left (or right) mark sensor and the mark sensor (8-2). [This left (or right) side mark sensor and the latter mark sensor are in a related position that deviates from the corresponding position mark (4). ],
For the rightward (or leftward) weft deviation of 2 mm or more, use this as the right (or left) mark sensor (8-3) (8-3) and the mark sensor (8-
2) detects [the mark sensor on the right (or left) side and the latter mark sensor become a related position that deviates from the corresponding position mark (4). ] Based on the detection of 0.4-1.2mm weft deviation and 1.2-2mm weft deviation, a predetermined amount of such deviation is detected by the drive unit (20) in the same manner as in the form of FIG. 3 when required. It is rotated normally (or reversely), stopped, and based on detection of a weft deviation of 2 mm or more, in the same manner as in the form of Fig. 3, the drive machine (20) is kept inactive and the loom The operation itself is stopped. In the form of FIG. 4, the position correction of the foil yarn (3a) with respect to the weft deviation of 2 mm or more (and, if necessary, the position correction of the contact (18)) may be performed in the same manner as in the form of FIG.

As is apparent from the above description, the operation control of the drive unit (20) by the sequence control device (23) is performed after each weft insertion after each weft insertion. Switching on and off of the sequence control device (23) required for it is performed by appropriate means,
For example, it may be performed by turning on and off the weft insertion detection sensor (36), which will be described later.

Thus, the foil yarn (3
When a) has a small weft deviation and a middle weft deviation, the hit (18) is displaced to the required position with respect to the weft deviation, and the displacement of this hit (18) applies (18). )
To the next rapier thread gripper (19) collision, in other words, the opening time of the thread gripper (19) is corrected to the timing corresponding to the above weft deviation, whereby the pattern-attached foil yarn has a normal weft. It is regulated that it should be put back into the insertion position.

In the mark sensor arrangement form shown in FIGS. 3 and 3-1, when the initially set operation amount of the driving machine (20) is changed during or after the installation of the device of the present invention, it is necessary to take measures against it. This is advantageous because the number of "variables" is larger than that of the arrangement type shown in FIGS. 4 and 4-1 because the number of mark sensors is larger. In the mark sensor arrangement type shown in FIGS. 4 and 4-1, the structure is simpler because the number of mark sensors is smaller than that of the former type.

In the above-mentioned foil thread weft insertion by the rapier (1), the foil thread whose end portion is waiting at a predetermined location is fixedly positioned by the thread path (15) at a location slightly upstream of the scissors (2). When the weft insertion is carried out, the foil yarn is held back and forth with respect to the shed (upper and lower in FIG. 2) by being held by the rapier (1) and weft-inserted. ) And the vertical direction is regulated to a certain relational position.

In addition, in the above weft insertion, before the rapier (1) releases the grip of the weft insertion foil yarn and the scissors (2) is the foil yarn thread end (3
At the time before cutting a '), the weft insertion detection sensor (3
6) is activated, which detects weft insertion.

On the other hand, when the weft thread (3a) is inserted in the normal direction, that is, when the weft thread is inserted in the normal direction, the weft-inserted foil thread (3b) also has the surface display mark (31) on the ears. The surface display mark detection sensor (32) detects the mark (31) while ensuring that the ear is fixed in the vertical direction. When the weft-inserted foil thread (3b) is turned upside down, the weft-inserted foil thread (3b) also has the surface display mark (31) on the ear, the surface turned upside down, in other words, the surface display mark. Detection sensor (3
It occupies the side not facing 2) so that the sensor (32) does not react.

The surface display mark detection sensor (32) detects the surface display mark (31) of the weft insertion foil thread (3b) and detects the non-detection, together with the weft insertion detection of the weft insertion detection sensor (36) at a predetermined time, It controls the front and back of the weft insertion foil thread (3b). The front and back inversion detection of this weft-insertion foil thread is confirmed by activating an alarm device such as a buzzer or a lamp based on the non-operation of the surface display mark detection sensor (32) and the operation of the weft insertion detection sensor (36). If necessary, the weft insertion yarn of the loom may be stopped by an appropriate means when the front and back reversal weft insertion of the foil yarn occurs.

[Brief description of drawings]

FIG. 1 is a front view schematically showing a standby state of a foil yarn together with a rapier in one embodiment of the present invention, FIG. 2 is a schematic plan view of a main part of a loom in one embodiment of the present invention, and FIG. A perspective view showing an example of the arrangement of the position mark sensor,
FIG. 1 is a diagram showing the relative position of each mark sensor in the mark sensor arrangement of the type shown in FIG. 3, FIG. 4 is a perspective view showing another example of the arrangement form of the position mark sensor, and FIG. 4-1 is FIG. FIG. 5 is a view showing the relative positions of the respective mark sensors in the mark sensor arrangement of this type, FIG. 5 is an exploded enlarged perspective view of the scissors in the same embodiment, and FIG. 6 is for releasing the rapier tip and the rapier thread gripping body in the same embodiment. Fig. 7 is an enlarged plan view of the hit, Fig. 7 to Fig. 9 are explanatory views showing the operating state of the scissors movable blade in the order of steps, and Fig. 10 is an enlarged sectional view taken along line XX of Fig. 6. (1) is rapier (2) is scissors (2a) Scissors movable blade (2b) is scissors movable blade holder (2c) is scissors fixed blade (3) is long roll of patterned foil thread (3a) The foil yarn (3a ') drawn out from the wound material has its yarn end portion (3b) the weft-inserted foil yarn (4), the position mark (l), the constant yarn drawing line (6), and pinch delivery. Roller (7) is yarn path (8-1), (8-2), (8-3) is position mark sensor (9) is clamp (15) is thread path (16) is presser (18) is rapier thread For releasing gripper (19) Rapier thread gripper (19a) for lever part (20) for hitting driver (31) for surface display mark (32) for surface display mark detection sensor (36) for weft Insertion sensor

Continuation of the front page (56) References JP 62-162048 (JP, A)

Claims (1)

[Claims] 1. A foil drawn from a long roll of a patterned filament yarn in which at least three position marks are provided at regular positions at the positions corresponding to the fabric selvages in each foil putting area. A loom for foil-placing a yarn, in which the long length of foil yarn is placed at a fixed position, which is foil-foiled by a rapier or gripper shuttle, and the foil-foiled foil yarn is fixed by scissors at a fixed position. In a loom that weaves a drawn foil fabric that has been cut,
At least one foil insertion area on the shed side of the foil yarn drawn out from the long length wound material is defined as a yarn drawing line extending in a fixed space, and the foil yarn in the constant yarn drawing line is used. A plurality of mark sensors for detecting the position marks of the line are arranged along the line, and the foil yarn in the line is provided at the position of the constant yarn drawing line when the rapier or the gripper shuttle is at rest and its advance. Occasionally, the forward movement is restrained until the forward movement limit is approached or reached, the restraint is released when the forward movement limit is approached or reached, and the release is continued during the weft insertion movement of the rapier or gripper shuttle. Place the presser foot,
A lever, which is arranged at a fixed position on the return traveling path of the rapier or gripper shuttle and drives the thread gripping body of the rapier or gripper shuttle, may be collided to displace in a weft direction in which the yarn gripping body is released. And then
Correspondingly, a drive machine that is operated based on the weft deviation detection of the foil thread position mark in the constant thread drawing line by the mark sensor is drive-coupled, and the mark sensor is
There is at least one arrangement for each of the position marks, and an arrangement corresponding to detecting a small weft deviation of the foil yarn in the constant yarn drawing line and an arrangement corresponding to detecting a middle weft deviation. And the arrangement corresponding to the detection of a large weft deviation, and these mark sensors are for detecting the weft deviation to one side of the foil yarn and those for the other side. It is composed of two groups, one for detection and the other for positive or negative so as to displace the contact by a predetermined amount to the required side in the fabric weft direction according to the weft deviation of the foil yarn in the constant yarn drawing line. A foil yarn weft automatic position regulating device with a pattern element for a loom, characterized in that it is driven backward and stopped, and is in a non-operating state.