JPH0226956A - Automatic position regulator for foil yarn with pattern element of loom - Google Patents

Abstract

PURPOSE:To avoid pattern disorder of a foil yarn by arranging plural mark sensors for sensing position marks of the foil yarn side by side on a yarn taking out line, sensing transverse slippage of the foil yarn with pattern elements held and picked by a rapier and correcting the position of the foil yarn. CONSTITUTION:A foil yarn (3a) with pattern elements unwound from a foil yarn long package 3 is held through yarn passages 5, 7 and 15 and rolls 6 by the back surface of a flexible movable blade holder (2b) and the front surface of a clamp 9 for standby. Plural mark sensors 8 for sensing position marks 4 of the above-mentioned foil yarn (3a) are arranged on the afore-mentioned foil yarn taking out line. The end (3a') of the foil yarn is held by a reciprocating rapier 1 to carry out picking. The above-mentioned mark sensors 8 sense the position marks 4 of the afore-mentioned foil yarn (3a) to know whether the picked foil yarn (3a) with the pattern elements are normally picked or not. If slippage of the weft yarn is sensed, the position thereof is corrected to normalize the picking. The above-mentioned foil yarn (3a) is then cut by a movable blade (2a) of the above-mentioned holder (2b).

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic weft inserting position regulating device for patterned foil yarn in a loom, particularly a loom including a rapier or gripper shuttle as a component, which requires a pattern element. A long roll of foil yarn in a section, for example, a flat yarn using cut foil, which is referred to as a pull foil by those skilled in the art and is used in a typical conventional sequential pulling technique described below, is to be inserted into the weft. A long winding material corresponding to the one connected in the length direction is placed in a fixed position, and the thread end of the foil thread pulled out from this is made to wait at a predetermined position, and the thread end of the foil thread is inserted into the above-mentioned rapier. Alternatively, by repeatedly carrying out the above-mentioned weft insertion under the specification of gripping and inserting the weft with a gripper shuttle and cutting the inserted foil yarn with mechanical power-driven scissors at a fixed position, the weft can be cut with the adjacent foil yarn. The present invention relates to an automatic weft inserting position regulating device for inserting a patterned foil yarn for a loom used to weave a fabric in which at least a portion of the fabric exhibits a pattern formed by accumulation of pattern elements of the foil yarn in the warp direction of the fabric.

Conventional technology and its problems It is conventionally known to create a pattern using the sequential drawing technique by wefting a patterned foil thread using the method described above. The revealing method is to slit a cut foil original fabric with a pattern on the surface of a base sheet such as Japanese paper with a width corresponding to the width of the woven fabric into many narrow strips. By inserting the weft one by one, the weft insertion cycle is superior to the pattern revealing method of reproducing the pattern originally created on the original fabric onto the fabric, and high productivity can be obtained.

However, on the other hand, when it comes to revealing patterns using the above-mentioned sequential drawing technique,
If the patterned foil yarn is not inserted into the fabric at a position with virtually no deviation in the weft direction, pattern streaks will occur, and a good pattern will not be revealed due to the accumulation of pattern elements in adjacent foil yarns and foil yarns. not achieved. Moreover, when wefting the foil yarn on a loom, the foil yarn is unwound from a long roll of foil yarn under the guidance of a pinch roller, but uneven tension of the foil yarn due to vibrations of the loom, changes in temperature and humidity, etc. This often causes misalignment.

Conventionally, in a loom used to weave a fabric whose pattern is created using the above-mentioned sequential drawing technique, means for ensuring that the position of weft insertion of foil yarn is automatically regulated so as to prevent pattern collapse. has not yet been realized. Incidentally, in the past, the actual situation is that workers sometimes manually correct the weft misalignment of the weft-inserted foil yarns.

In addition, in conventional weft insertion systems using rapiers or gripper shuttles, there are variations in the waiting posture and position of the foil yarn ends at predetermined locations, and the range of types of foil yarns that can be applied to the same loom is limited. There were considerable restrictions on one or more of the following: material, thickness, width, or thickness.

The present invention is capable of automatically regulating the weft insertion position of patterned foil threads to prevent pattern collapse in weaving on the above-mentioned type of loom. In the above, it is possible to apply a wide variety of foil threads that are far beyond the conventional ones, and therefore it can be used in a good manner even in complex, delicate and/or elegant picture patterns such as those seen on inner hangings. The object of the present invention is to provide a device that can efficiently and simply perform weft insertion using a rapier or gripper shuttle.

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

A loom that includes a rapier or gripper shuttle (hereinafter abbreviated as rapier) and scissors in fixed positions as components, and in which a long winding of foil yarn having pattern elements at predetermined positions is arranged in fixed positions. The thread end of the patterned foil thread pulled out from this is made to stand by at a predetermined location, the thread end of the foil thread is gripped by the rapier and inserted into the weft, and the inserted foil thread is cut with the scissors. In a loom used to weave a fabric that at least partially exhibits a pattern resulting from the accumulation of pattern elements of adjacent foil yarns in the warp direction of the fabric by repeatedly performing the above-mentioned weft insertion under the above specifications. A long roll of foil yarn has at least three position marks spaced apart from each other at fixed positions in the weft insertion range of the portion corresponding to the selvedge of the fabric. A thread line corresponding to at least one weft insertion range on the shed side of the foil thread that has been drawn is set as a thread draw-out line extending in a certain space, and a plurality of mark sensors detect the position mark of the foil thread on the constant thread draw-out line. are lined up along the line, and the foil yarn in the line is pulled at the constant thread pull-out line when the rapier is at rest and when the rapier moves forward until it approaches or reaches the forward limit in the forward motion. A presser foot is arranged to restrain the restraint, release the restraint when the forward limit is approached or reached, and continue the release during the weft insertion movement of the rapier, and the presser foot is disposed at a fixed position on the return travel path of the rapier. The lever that drives the thread gripping body of the rapier collides with the lever that releases the thread gripping body so that the lever that drives the thread gripping body can be displaced in the weft direction of the fabric. A drive is coupled to the drive which is actuated based on the detection of weft deviations of the position marks, the mark sensors being arranged at least one for each of the position marks and detecting small weft deviations of the foil yarns in the constant yarn withdrawal line. These mark sensors include those arranged corresponding to detection, those arranged corresponding to detecting medium latitude deviation, and those arranged corresponding to detection of large latitude deviation, and furthermore, these mark sensors The scissors consist of two sets, one for detecting weft deviation toward the blade side of the foil thread and the other for detecting weft deviation toward the other side. The scissors include a fixed blade whose position can be changed with respect to the weft, and the scissors are used to pull back the foil yarn slightly in the weft direction until the foil yarn that has been inserted and released from the grip is cut. a position for displacing the scissors fixed blade to a predetermined position so as to regulate the pulling back of the foil yarn according to the small and medium weft deviations of the foil yarn; An adjusting means is added, and the driving machine is configured to displace the hit by a predetermined amount to a desired side in the weft direction of the fabric in accordance with the weft deviation of the foil yarn in the constant yarn drawing line.
An automatic position regulating device for inserting patterned foil yarn in a loom, characterized in that the device is configured to be driven forward or backward and stopped, and to be in an inactive state.

Function: In the present invention, the foil yarn drawn out from the long roll of foil yarn which has pattern elements in a predetermined position and which is placed at a predetermined position has its yarn end parked at a predetermined position, and at least a shuttle. The yarn feed equivalent to one weft insertion range on the mouth side is made to stand by as a yarn draw-out line extending in a certain space, is gripped by a rapier and inserted, and the rapier performs a weft insertion movement, in other words, a double movement. When this position is reached, the lever that drives the thread holder collides with the lever, the thread holder is released, and the inserted foil thread is cut at a predetermined point by mechanically driven scissors in a fixed position. Then, the weft insertion of the patterned foil yarn with the rapier and cutting at predetermined locations with scissors are repeated in the same manner, so that the foil yarn adjacent to the fabric-A and the pattern elements of the foil yarn are parallel to each other in the warp direction of the fabric. Then, a pattern formed by parallel accumulation of the pattern elements is revealed on the fabric.

In this weft insertion, when the inserted foil yarn is at the normal weft insertion position, there is a single thread pull-out line corresponding to one weft insertion range on the shed side of the patterned foil yarn, in other words. Then, the foil thread position mark on the line also assumes a normal position, which is detected by a plurality of mark sensors at fixed positions, and the drive machine for opening the rapier thread grip does not operate.

There are small (
(usually 0.4 to 1.2 mm) or medium (usually 1.2 mm)
~2mm) When a weft deviation occurs (a weft deviation of less than 0.4mm is normally within the permissible range), the position mark of the foil yarn on the constant yarn pull-out line also shifts, and weft deviation of less than 0.4mm occurs. A small mark sensor for detecting weft deviation or a middle mark sensor for detecting weft deviation detects the degree of deviation and whether it is on the left or right side, and based on this detection, the thread gripper release hit is moved by a predetermined amount to the desired side in the weft direction of the fabric. By driving the corresponding drive machine forward or backward and stopping it so as to cause the displacement, the timing of collision of the rapier thread gripping body drive lever with respect to the corresponding object, that is, the timing of releasing the rapier thread gripping body, corresponds to the above-mentioned weft deviation. The patterned foil yarn is brought to the normal weft insertion position again in accordance with this regulation.

When a large latitude deviation (usually 2 mm or more) occurs, a mark sensor for detecting a large latitude deviation detects this, and based on the detection, the corresponding drive machine is put into a non-operating state.

The foil yarn on the above-mentioned constant thread draw-out line is controlled by the presser foot placed at the line, when the rapier is at rest and when the rapier approaches the forward limit in the forward motion when the rapier is at rest. be restrained until or until it is reached. Therefore, the fixed positioning of the constant yarn drawing line is not substantially disturbed by vibrations of the loom or the like.

When a weft misalignment occurs when inserting the foil yarn with the rapier, and the position of the rapier thread gripper release stop is changed to correct this, the changed position will be appropriate for regulating the position of the foil yarn weft insertion next time. However, this is theoretically an inappropriate position for the next weft-inserted foil yarn. Therefore, when correcting the position of the hit using mechanical force based on the detection of the foil yarn weft deviation described above, if the position of the hit is adjusted carelessly according to the degree of weft deviation, the position correction will result in a new position change. However, this develops as a chain reaction, and the weft insertion of the foil threads tends to deviate to the left or right, or becomes meandering.

In the present invention, this problem is taken care of by the method of applying the position mark and the arrangement of the mark sensor.

In the present invention, at least three position marks are applied at predetermined intervals in each weft insertion range of a long foil yarn, and as a mark sensor for detecting the position mark of the foil yarn on a fixed yarn withdrawal line, at least one arrangement for each of the position marks, and an arrangement corresponding to detecting a small weft deviation of the foil yarn at a constant thread withdrawal line and an arrangement corresponding to detecting an intermediate weft deviation; We are applying a system that includes a system with a configuration that corresponds to the detection of large latitude shifts.

According to this configuration of the present invention, a mark sensor is used to detect a small latitude deviation, a mark sensor is used to detect a middle latitude deviation, and a mark sensor is used to detect a large latitude deviation. It is possible to detect the degree of latitude deviation by classifying it into small, medium, and large, such as a mark sensor for the purpose, and to adjust the hit position accordingly for small and medium latitude deviations. In the case of a large weft shift, the corresponding drive machine can be put in a non-operating state, and in that case, the operation of the loom itself can be stopped. Therefore, in the present invention, the concept of correcting the position of the hit by mechanical force can be realized with purpose based on the detection of the weft deviation of the foil yarn by applying a position mark and a mark sensor.

Furthermore, in the present invention, the scissors for cutting the foil yarn include a mechanically driven movable blade and a fixed blade whose position relative to the movable blade can be changed, and the scissors cut the foil yarn after being inserted into the weft and released from gripping. The scissor fixed blade is provided with a pull-back means for pulling back the foil yarn a little in the weft direction until the foil yarn is cut, A position adjustment means is added for displacing the clamping fixed blade to a predetermined position so as to regulate the amount of pullback. According to this configuration, by regulating the amount of pullback of the foil yarn based on the displacement of the fixed scissor blade to a predetermined position, the position of the inserted foil yarn itself can be corrected in accordance with the weft deviation before cutting.

Effects of the Invention As described above, according to the present invention, the release timing of the rapier yarn grip is regulated so as to immediately respond to both weft insertion in the normal position and weft deviation at a predetermined time. In addition to being able to perform weft insertion and guaranteeing the fixed position of a constant thread withdrawal line, it is also possible to correct the position of the inserted foil yarn itself according to the degree of weft deviation. By automatically regulating the position, it is possible to avoid the pattern of the foil thread from becoming distorted. Moreover, this can be achieved in accordance with the present invention as described above.

In this way, according to the present invention, it is possible to apply a wide variety of foil threads in one or more of material, thickness, width, etc., far exceeding the conventional methods, which was considered extremely inefficient and difficult in the past. Even complex, delicate and/or elegant picture patterns, such as those seen on inner hangings, can be expressed in a good manner efficiently, concisely and sequentially using rapier weft inserting. can.

Example Next, embodiments of the present invention will be described with reference to the accompanying drawings.

In the figure, (1) is a rapier used in a loom, and its thread gripping surface (1a) is oriented in the vertical direction. (
2) is a fixed-position scissors driven by mechanical power, and (3) is a long winding of foil yarn.The rapier (1) is reciprocated through the opening of the warp threads in the same manner as before, and the scissors (2) ) are operated in shear in a conventional manner. The scissors (2) has a movable blade holder (2b) on which the movable blade (2a) is attached and which operates to shear the scissors (2), on the side of the fixed scissor blade (2C) that is further away from the fabric selvage (the left side in Fig. 1). occupies .

The scissors (2) have a pull-back means for pulling back the foil yarn slightly in the weft direction until the foil yarn is inserted and released from the grip as described later and is cut by the scissors (2). . As this pull-back means, the movable scissors blade holder finger part (2b''') and the clamp (9) described below can be advantageously used.

The fixed scissor blade (2C) is fixed, that is, immovable, with respect to the shearing action of the movable scissor blade (2a), but the movable scissor blade (2C)
By rotating a), the position where it meets can be adjusted. A preferable example of the means for adjusting the position is shown in FIG. 11.12. The example embodiment of FIG. 11.12 has the following structure.

The fixed blade (
The intermediate part of the arm-type holder (2c') of 2C) is pivotally supported, and the lower end of the lever (38) in the fixed position on the loom is connected to the lower end of the holder (2c') (39) in FIG. are connected via. The other end of the lever (38)
It is connected to a solenoid (40) for pulling it to the left in the figure and a solenoid (41) for pulling it to the right. One end of an arm (43) is connected to an intermediate portion of the lever (38) from the fulcrum (42) to the end on the solenoid side. The arm (43) has a roller (44) at the other end, and the roller (44) is attached to a V-groove (46) of a V-groove type positioning plate (45) arranged in a fixed position by a spring (47). Inscribed under bias.

The positioning plate (45) and roller (44) position the lever (38) through the arm (43) at a neutral position where it is not biased to either the left or right while the solenoids (40) and (41) are not energized. Hold.

Based on the neutral position of this lever (38), the fixed blade (
2c) is also held at a neutral position with respect to the meeting position with the movable blade (2a) while the solenoids (40, 41) are not energized. A first stopper (48) (48) and a second stopper (49) (49) are arranged slightly above the first stopper (48) facing the left and right sides of the lower end of the lever (38). The stopper (48) (48), (49) (49)
has a screw (50) for position adjustment. The first stopper (48) (48) occupies a relative position corresponding to a small weft deviation of the inserted foil yarn, which will be described later, and the second stopper (49) (49) corresponds to a middle weft deviation. Occupy a relational position. The first stoppers (48) (48) are attached to the bracket (51). The bracket (
A shaft (53) to which one end of an arm (52) is connected is fixed to the shaft (51), and a solenoid (54) is connected to the other end of the shaft (53) via a connecting rod (55).

When the solenoid (54) is energized, the solenoid (54)
4), the connecting rod (55), arm (52) and shaft (53
), the bracket (51) is rotated about the shaft (53), and thereby the first stopper (48) (
48) is moved to a place where it does not touch the lever (38), that is, outside the range of the rotation path of the lever (38).

The above-mentioned rapier (1) has a part of the thread gripping part thereof facing the side of the foil thread (3a) extending to the part with a size corresponding to the thread width of the foil thread in the vertical and horizontal directions. It is better to create an expanding space (29) (see Figure 10)
. In Fig. 10 of the rapier (1), the right side surface, that is, the tip of the rapier is the thread end (3a') of the foil thread (3a).
The side surface of the side passing through the point is
3a') in the corresponding direction to the right in Figure 10 as much as possible, chamfering (
30) is preferably applied.

The above-mentioned long roll of foil yarn (3) consists of flat threads made of so-called pulled foil used in a conventional pattern revealing method using a typical sequential pulling technique. It suffices to apply a device having pattern elements (not shown) arranged in parallel in the warp direction of the fabric (not shown) at required locations, which corresponds to a device connected to the foil yarn long winding material (3). , in each weft insertion area, at the fixed position of the part corresponding to the selvage of the fabric,
Three position marks (4) are made in advance at intervals. For each long foil yarn roll (3), one weft insertion area is
It is better to apply a surface display mark (31) on the front or back surface of another fixed position of the portion corresponding to the selvage of the fabric. In the case shown in the diagram, the area display marks (31) are arranged corresponding to the number of left and right selvedges of the fabric in each weft insertion area of the long foil yarn roll (3) (the diagram shows one side of the fabric). Only surface display marks are shown.

).

The long roll of foil yarn (3) is placed at a fixed position on the loom, and from this the foil yarn (3a) is passed through the yarn path (5), the pinch feed roller (6) and the yarn path (7). The thread is then pulled out, and the end of the thread is exposed at a predetermined location. The amount of feed by the pinch feed roller (6) is slightly smaller than the amount of foil yarn (3a) pulled out by the rapier (1) during weft insertion, which will be described later. In the figure, the thread path (5) is shown for convenience to make it easier to understand.
Although shown in perspective, the arrangement is such that the surface matching the interior of the yarn channel traverses the drawn foil yarn. The drawn-out foil yarn (3a) is threaded by at least an amount corresponding to one weft insertion range on the shed side by an appropriate means such as a yarn guide or a guide roller, and a yarn drawn-out line (3a) extending in a certain space. Ω). In the illustrated case, this is done by means of a thread path, to which the thread path (7) and the following thread path (15) are assigned.

A plurality of mark sensors for detecting the position mark (4) of the foil yarn (3a) at this constant yarn pull-out line (l) are arranged side by side along the line (Ω).

The plurality of mark sensors are connected to the three position marks (4).
)(4) At least one arrangement for each of (4), for example, as shown in FIG. 3, two destination devices for the left and right position marks and one arrangement for the middle position mark; Alternatively, as shown in FIG. 4, each position mark is arranged for one address. The arrangement of these is
Foil yarn (3a) in the above constant yarn drawing line CD')
An arrangement corresponding to detecting small latitude deviations of, for example, 0.4 to 1.2 mm, medium latitude deviations, such as 1.
One arrangement corresponds to detecting a latitude shift of 2 to 2 mm, and the other arrangement corresponds to detecting a large latitude shift, for example, a latitude shift of 2 mm or more. Its small latitude shift detection compatible arrangement,
In the middle latitude deviation detection arrangement and the large latitude deviation detection arrangement, in the format shown in Fig. 3, the mark sensor occupies the relative position shown in Fig. 3-1 with respect to the position mark, and in the form shown in Fig. 4. In this type of arrangement, the mark sensor occupies the relative position shown in FIG. 4-1 with respect to the position mark.

In Figures 3-1 and 4-1, the arrow indicates the vertical axis of each mark sensor (optical axis of the optical sensor described later),
The position occupied by the vertical axis line mark sensor is for the case where there is no weft deviation in the foil yarn (3a) at the constant yarn pull-out line (ρ). The length of each position mark may be determined appropriately depending on the arrangement of the mark sensor. For example, in the arrangement shown in Fig. 3-1, the left and right position marks are 6 mm, and the middle position mark is 4 mm. Yes, 4th-
In the arrangement shown in FIG. 1, for example, each position mark is 2.4 mm. In any of the above arrangements, the distance between the position marks may be set to an appropriate length relative to the diameter of the mark sensor, for example 3 mm.

In Figures 3 and 4, (8-1) is a mark sensor (8-1) for detecting the lower limit of latitude deviation of 0.4 mm or more among the small, medium, and large latitude deviation detection mark sensors (8-1). -2) is the mark sensor (8-3) for detecting the lower limit of latitude deviation of 1.2 mm or more.
This is a mark sensor for detecting the lower limit of latitude deviation of mm or more. In the format shown in FIG. 4, the mark sensor for detecting the lower limit (0, 4 mm) of a small latitude shift also serves as the mark sensor for detecting the lower limit (2 mm) of a large latitude shift.

These mark sensors (8-1), (8-2) (8-3
) consists of two sets: one for detecting weft deviation to one side of the foil yarn (3a) and one for detecting weft deviation to the other side. In any of the formats shown in Figure 3.4, the mark sensor for detecting cotton deviation at the required position is also used to detect latitude deviation between one side and the other side, and it corresponds to the position mark on the middle side. It is.

The plurality of arc sensors described above are collectively shown as one block in FIG. 1, and the reference numeral (8) is attached to it. As the mark sensor, a light sensor such as an optical reflector sensor can be used, and a color mark sensed by the light sensor, for example, black, can be used as the position mark (4).

A sensor (32) is placed at the location corresponding to the kM mark (31) to detect the surface display mark (31) of the foil yarn under the weft insertion when the rapier (1) is used to insert the weft (described later). do. Needless to say, the sensor (32) is
If the mark (31) is on the surface side of the foil thread (3a),
Where the mark (31) corresponds to the front side of the weft insertion foil yarn, if the mark (31) is on the back side, the mark (31) on the back side of the foil yarn
31) Arrangement of corresponding locations. An optical sensor similar to the mark sensor can be used as the surface display mark detection sensor (32), and a color mark of the color detected by the surface display mark detection sensor (32) can be used as the mark (31). .

(9) is a clamp for the cut thread end of the drawn-out foil thread, and this clamp (9) corresponds to the back surface (left side surface in FIGS. 1 and 5) of the scissor movable blade halter (2b). It is placed at a fixed location. The clamp (9) is biased by a spring with such strength that the clamp (9) grips the cut thread end as described below and is released by pulling the thread end while gripping the rapier (1), which will be described later. It is pressed toward the holder (2b). (10) is a spring for urging the spring, and (11) is a spring strength adjusting screw. A clamp (9), a spring (10) and an adjusting screw (11) are mounted on the body (12) with fixed mounting on the loom frame (not shown). (
13) is a suppressing pin for the clamp (9), and (14) is a ball interposed between the pin (13) and the spring (10). The clamp (9) has a fixed scissor blade (2c)
The movable scissors blade holder finger part (2b') is pressed against the back surface of the movable scissors blade holder finger part (2b') which is in the closed state by the spring bias of the spring (10).

A thread path (15) for the single thread pull-out line (Ω) is provided slightly upstream of the clamp (9) (on the left side in FIG. 1) for the line.

The thread guide (15) may have a groove or a protrusion extending upwardly on its upper surface to guide the thread direction of the foil thread (3a).

When the rapier (1) is at rest at the single thread pull-out line <A"), preferably further upstream from the thread path (15)), and when the rapier (1) approaches the forward limit in the forward movement during its forward movement. The foil thread in the line (J2) is restrained under pressure up to or until it reaches
opens when approaches or reaches the forward limit;
A presser foot (16) is arranged to continue its release during the weft insertion movement of the rapier (1). The control of suppressing and releasing the presser foot (16) at predetermined times is performed using appropriate means, such as a rapier (16).
) may be performed via an interlocking mechanism by actuating a suitable moving member of the reciprocating system. (17) is a fixed presser stand facing the weight (16).

(18) is placed at a fixed position on the return movement (weft insertion) running path of the rapier (1), and the lever (190) for driving the rapier thread gripping body (19) collides with the thread gripping body (19).
19) is opened, and the corresponding (18) is made to be able to be displaced in the weft direction of the fabric on the loom, and the corresponding (18)
A driving machine (20) is drivingly connected to the driving machine (20). For example, a small reversible motor may be applied to the drive device (20), and the driving connection between the hit (18) and the drive device (20) is, for example, a hit (
A nut (21) is fixed to the base of the drive machine (20).
) to the adjusting screw (22) connected to the output shaft of the nut (
21).

The drive machine (20) includes the mark sensor (8-1).
, (8-2), <8-3) is the sequence control device (2
3). This sequence control device (2
Computers can be applied to 3). The computer is capable of controlling the operating amount of the drive machine (20), output signals, forward direction, reverse direction, stop of the drive machine (20), etc., which will be described later.
A person for executing non-operation control, an output signal, a person for executing displacement regulation of the fixed scissor blade (2C), which will be described later, an output signal, a person for executing displacement direction selection of the fixed scissor blade (2C),
An interface for processing output signals and a driver (20
) necessary data for executing the operation amount regulation, data necessary for executing the forward, reverse, stop, and non-operation control of the drive machine (20), and execution of the full displacement regulation of the scissors fixed blade (2C). a memory storing necessary data for selecting the displacement direction of the scissors fixed blade (2c), and executing the operation amount regulation of the drive machine (20), forward, reverse, stop, It includes a microprocessor that performs arithmetic processing for executing non-operation control, executing the displacement amount regulation of the fixed scissors blade (2C), and executing arithmetic processing for executing the displacement direction selection.

The computer, mark sensor (8-1), (8-
2), (8-3) and the drive unit (20) are connected to the computer, the solenoids (40) and (41) that are part of the scissors fixed blade (2C) position adjustment system described above, and the first stopper. (48) The relationship of the solenoid (54) for driving the bracket (51) of (48) is shown in FIG. 6 as a block diagram. The block diagram shown in FIG. 6 is based on the arrangement format of the mark sensor as shown in FIG. 3.

A block diagram of the mark sensor arrangement format in FIG. 4 has been omitted, but will be clear to those skilled in the art.

(24) indicates a spring which always tends to close the rapier thread grip (19).

(25) is suspended in the middle of the foil yarn (3a) between the pinch feed roller (6) and the yarn guide (7) so as to be movable up and down, as required, and the required side is a reflective surface. This is a weight board for removing slack in foil threads. The left and right side edges of the weight plate (25) are fitted into opposing guide grooves (not shown) extending in the vertical direction, and the vertical movement is guided by the weight. The weight plate (25
), at a fixed position on the side corresponding to the reflective surface,
A sensor (26) is arranged to capture the reflected light from the reflective surface. The sensor (26) is electrically or electronically connected to a drive device (not shown) such as a motor of the pinch delivery roller (6), and the sensor (26) is connected to a drive device (not shown) such as a motor for the pinch delivery roller (6), and the sensor (26) is connected to a drive device (not shown) such as a motor for the pinch delivery roller (6), and the sensor (26) is connected to the drive device (not shown) such as a motor for the pinch delivery roller (6).
Based on the position detection in step 25), it is driven and stopped at a predetermined time. The sensor (26) can be an optical sensor similar to the mark sensor described above. The pinch outlet-lar (6) is kept active during the following weft insertion by the rapier (1). (28) indicates the operating lever of the movable scissors blade holder (2b), and the lever (28) is operated in conjunction with the reciprocating movement of the rapier (1).
is rotated in the vertical direction in FIG. 5 at a predetermined time.

At a certain point after the rapier (1) releases its grip on the weft-inserting foil yarn (described later) and before the scissors (2) cuts the foil yarn, for example, the rapier (1) reaches the final end of its backward movement. The loom is equipped with a weft insertion detection sensor (36) which is activated at a certain point (slightly before cutting the foil yarn) to detect weft insertion. The sensor (36) may be a sensor similar to a mark sensor, a proximity switch, etc., and a movable member in the foil yarn weft inserting device, such as the rapier (1) or another movable member interlocked therewith, may During weft insertion, the device is activated at a predetermined time by an appropriate method such as placing it at a corresponding location to detect when the displacement reaches a predetermined position.

When the following weft insertion is performed using the rapier (1), at the location corresponding to the selvedge of the inserted foil thread, but not at the location where the weft display mark detection sensor (32) (32) is located,
It is preferable to provide an appropriate number of warp splints on the loom. The warp splicing yarns are interlocked with the weft-inserted foil yarn selvage by the same means as for the general warp yarns, or intersected with the selvedges on the lower surface of the selvage. It is sufficient that the interlocking is sparse in the longitudinal direction. The warp splint is shown in FIG. 2, and the joined warp splint therein is designated by the symbol (33),
The lower crisscross splint is designated by (33'). The warp splints shown in FIG. 2 are a combination of twisted and undercrossed threads.

The end of the warp splicing yarn (33) that is to be combined with the weft-inserted foil yarn edge is wound around the fabric winding beam (not shown) of the loom in the same way as the normal warp yarn (W). ing.

The warp splint (33') does not need to be wound around the take-up beam, and may be placed under a suitable tensile strength.

A loom equipped with the device of the present invention including the above-mentioned parts may be a general shuttle-type power loom, a rapier loom, or a gripper loom. In the illustrated embodiment of the present invention, the loom is a general shuttle-type power loom (Fig. 2), and in Fig. 2, reference numeral (34) indicates the shuttle box of the power loom, and (35) indicates the reed. There is. In the case of a general shuttle-type power loom, the shuttle is used for the same purpose as before, and the power loom is additionally equipped with the above-mentioned parts including the rapier (1). ) is added to the power loom for shedding control means for causing the warp threads to perform the shedding movement necessary for foil weft insertion. As this shedding control means, a warp shedding means which is known per se can be applied.

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

Foil yarn long roll (3) Thread guide (5), roller (6
), the patterned foil yarn (3
a) is in a standby state in preparation for weft insertion with the rapier (1), and the thread end is attached to the back of the scissor movable blade holder (2b) and the spring (1) as will be described later.
0)l: It is held between the front surface of the clamp (9) and the front surface of the clamp (9), which is in pressure contact with the spring bias. In this standby state, the foil yarn (3a) forms a yarn pull-out line (ρ) extending through a space with a constant yarn feed equivalent to at least one weft insertion area on the shed side. Further, in the standby state, the foil thread (3a) has its thread end (3a') oriented diagonally as shown in FIG.

If a weight plate (25) is provided, the weight plate (25) occupies a lowered position due to its weight when the foil yarn (3a) is in the above-mentioned standby state, and the weight plate (25) is in a lowered position due to its weight. A sensor (26) faces the reflective surface.

While the foil thread (3a) is in a standby state, the rapier (1) moves forward (travels to the left in Fig. 1) and fixes the thread end (3a') of the foil thread in the standby state with the rapier. Side thread grip part (
27) and the rapier (1) reaches its forward limit. At this time, the side surface (27a) of the thread gripping part (27) corresponding to the upper side of FIG. 6 is the part corresponding to the lower side of the thread end (3a') of FIG. Slightly in the direction equivalent to above,
Pass through the area by pushing it away. Presser foot (16)
When the rapier (1) moves forward, it presses and restrains the foil thread (3a) of the line (Ω) until it approaches or reaches its forward limit.

When the rapier (1) switches from the forward limit to backward movement and the thread gripping part (27) passes the thread end (3a') at the beginning of the backward movement, the thread end (3a') The grip part (27
) and the thread gripping body (19) in the vertical direction
a), the thread gripping body (19) by a spring (24);
It is held under pressure by the force of . In this gripping, 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 a thread gripping body (
19) There is no contact with the top surface, etc. Thereafter, the foil yarn (3a) is inserted into the weft by the further backward movement of the rapier (1).

Prior to this, the presser foot that was holding down the foil thread (3a) above (
16) is reset to release the constraint of the foil thread (3a) when the rapier (1) approaches or reaches its forward limit. The release of the foil yarn (3a) continues during the weft insertion movement of the rapier (1).

At the beginning of the return movement of the rapier (1), the rapier (1)
The weight plate (25) is raised by the increase in the pull-out tension of the foil thread (3a) as the backward movement progresses (however, the weight plate (25)
) is provided).

Then, when the weight plate (25) occupies a position above the sensor (26), the sensor (26) detects this, and based on this, the pinch feed roller (6) is driven to feed the foil yarn (3a). put out. Foil thread (3a) of the roller (6)
Since the amount of feed-out is slightly smaller than the amount of foil yarn pulled out by the retreat of the rapier (1), the foil yarn being inserted maintains a predetermined pulling tension.

When the rapier (1) reaches the fixed position in the return motion, it hits (
The tip of the lever (190) that drives the rapier thread gripper (19) collides with the thread gripper (18), the thread gripper (19) opens, and the rapier thread gripper (19) at the thread end (3a')
release the grip.

The lever (190) for driving the thread gripper (19) is of the single lever type as shown in FIG. 6, more preferably of the type shown in FIG.
The first lever (19a') has a steep slope (right end surface in Figure 4) and extends from the thread gripping body (19).
19a), a thread gripper (19) which is attached to the rapier (1) and whose tip is in contact with the inclined cam (19a');
Contact surface (19b') for opening (18)
A second lever (19b) with a gentle slope is applied. In this latter type of lever, the contact surface (19b') of the second lever (19b) has a gentle slope, so the shock of the collision against the hit (18) is small, and the steep slope of the second lever (19a) Type cam (19a'
) to quickly open the thread gripping body (19), increasing the accuracy of the timing for releasing the foil thread. The higher the accuracy of the timing of releasing the foil yarn, the higher the accuracy of regulating the weft insertion position of the foil yarn.

Weft insertion by the rapier (1) starts at a certain point from the beginning of the advance of the rapier (1), for example, when the rapier thread gripper (1)
9), the scissor movable blade holder (2b) is in a closed state with respect to the fixed blade (2C) together with the movable blade (2a), that is, out of the traveling path range of the rapier (1). (Fig. 7), and when that point is reached, the holder (2b) rotates together with the movable blade (2a) counterclockwise in Fig. 7, passing through the state shown in Fig. 8 on the way, No. 9 is moved to the open position relative to the fixed blade (2C).
(Fig. 9), from which it rotates in the clockwise direction in Figure 9, and with this reversal rotation, the movable blade (2a) and fixed blade (2C) move the foil thread (
The yarn end (3a') of step 3a) is sheared at a predetermined location.

The thread end (3a) of the foil thread (3a) is sheared at this predetermined location.
') is a finger of the holder (2b) that runs parallel to the movable blade (2a) in the pre-rotation process of the rotary movement when the movable blade (2a) of the holder (2b) performs a shearing operation. Part (2b') hits the lower edge and is pushed downward in Figure 1, and as the holder (2b) moves further, it is adjacent to the front side (left side in Figure 1) of the clamp (9). Immediately after the thread end (3a') of the section is brought into contact with the upper edge of the clamp (9) by the holder finger part (2b'), the following movable blade (2a) is rotated clockwise in Fig. 9. The holder (2b) is finally cut due to the motion and continues to advance afterward.
By rotating in the clockwise direction in FIG. 9, the lower edge of the holder finger part (2b') pushes the thread end (3a') of the part that contacts the lower edge downward, corresponding to the contact part. The part is substantially connected to the back side of the holder (2b) [strictly speaking, part of the holder finger (2b”)] and the clamp (
9) It is held between the front surface and the front surface.

The point at which the line end (3a') is cut by rotating the movable blade (2a) clockwise in FIG. , may be set at a later point. When cutting this yarn end (3a'),
The presser foot (16) holds the foil thread (3a) at a constant thread pull-out line (ρ).
) is pressed down again to restrain it.

After the rapier (1) has finished retracting, the feed roller (
6) continues to operate, thereby reducing the tension of the foil thread (3a) after the roller (6) and lowering the weight plate (25) (provided that the weight plate (25) is present). The weight plate (2
When the roller 5) descends to a position facing the sensor (26), the sensor (26) detects this, and based on this, the delivery roller (6) is stopped.

If the weight plate (25) is not provided, the delivery roller (6)
may be driven and stopped as required by means similar to the foil thread delivery roller in a conventional rapier (or gripper) loom.

Thereafter, in the same manner, one weft insertion of the patterned foil yarn is carried out for each reciprocating movement of the rapier (1), and cutting is performed at a predetermined location with the scissors (2), that is, at a location corresponding to the one weft insertion range. , the weft-inserted adjacent foil yarns and the pattern elements of the foil yarn are arranged in parallel in the warp direction of the fabric, and a pattern is created by the parallel accumulation of the pattern elements on the fabric. The weft-inserted foil yarn (3b) is then intertwined with the warp (W) on the loom...the ears protruding from the parallel body with the warp splicing yarn (33)... The lower surface of the lug intersects with the warp splint (33'), that is, the lug rests on the warp splint (33'). By this interlocking and crossing, the warp (W) of the weft-inserted foil yarn (3b)...the vertical positioning of the portion protruding from the parallel body is ensured.

In the above-mentioned weft insertion, when the inserted patterned foil yarn is not shifted in weft, the foil yarn (3a) at the constant thread pull-out line CD> is also in the correct position without weft shift,
It will be on standby in preparation for the drawer, and the position marks (4) (4) (4) of the foil thread (3a) of the line (Ω) occupy the normal position. In this case, the relevant position mark (4) (4)
(4) is the corresponding mark sensor (8-1), < 8-
2), facing (8-3), and hit (18)
The drive machine (20) does not operate. This operation control is regulated by a sequence control device (23).

If there is a weft misalignment when inserting the foil yarn (3a) with the rapier (1), in that case, the foil yarn (3a) at the single yarn pull-out line (j2) should be moved in the horizontal direction in Figure 1 according to the weft insertion. In other words, there is a positional shift in the weft direction of the position marks (4) (4) (4) of the foil yarn (3a) of the line.

Now, in the mark sensor arrangement format shown in Figure 3, the foil thread (3a) on the line (Ω) is directed to the right (or left)
If there is a latitude shift of 0.4 to 1.2 mm (small latitude shift) to the mark sensor (8-1) (8-
The mark sensor on the left side (or right side) of 1) detects [the mark sensor on the left side (or right side) is the only relative position that is out of the corresponding position mark (4)]. ], Based on this detection, for this small latitude shift,
The driving machine (20) is operated under the control of the sequence control device (23) so that the weft insertion foil thread (18) occupies a position immediately corresponding to the normal weft insertion position next time, prior to the next weft insertion. ) is rotated forward (or reverse) by a predetermined amount and then stopped. In the format shown in Figure 3, if the foil thread (3a) of the line (Ω) shifts to the right (or left) by 1.2 to 2 mm (middle weft shift), then in this case mark sensor (8-1) The left (or right) mark sensor (8-1) and the left (or right) mark sensor (8-2) (8-2). The mark sensors detect [these two left (or right) mark sensors only detect the corresponding position mark (4
). Based on this detection,
In response to this weft misalignment, the drive machine (20) performs a sequence so that the next weft insertion foil yarn hits a position that immediately corresponds to the normal weft insertion position, and the drive unit (18) occupies the position immediately before the next weft insertion. Under the control of the control device (23), it is rotated forward (or reversed) by a predetermined amount and then stopped. In the format shown in Figure 3,
When the weft deviation of the foil thread (3a) of the line (Ω) is 2 mm or more (large weft deviation) to the right (or left), this is detected by the mark sensor (8-1) (8-1). The left (or right) mark sensor (8-2) The left (or right) of (8-2)
The mark sensor (8-3) and the mark sensor (8-3) detect these two left (or right) marks, and the latter mark sensor is at a relative position that is out of the corresponding position mark (4). ], Based on this detection, the drive machine (2
0) 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 thread (3a) of the constant current drawing line (Ω) may be manually returned to its normal position. At that time, confirm that the normal position has been returned by using an appropriate method, such as mark sensor (8-1) (8-1)
, (8-2) Connect pilot lamps (not shown) to (8-2) and (8-3) respectively, and when the corresponding position mark (4) faces these mark sensors, This can be done by observing the pilot lamp indicating that the mark sensor is turned on. If necessary, the position of the abutment (18) can also be corrected manually (this can be done, for example, by manually rotating the adjustment screw (22)).

In the mark sensor arrangement format shown in Figure 4, the right direction (
If the latitude shift to the left (or to the left) is 0.4 to 1.2 mm, this is detected by the mark sensor (8-1) (8-1)
The mark sensor on the left side (or right side) of [which also serves as 8-3, 8-3] detects [only the mark sensor on the left side (or right side)] is at a related position that deviates from the corresponding position mark (4). Become. If there is a latitude shift of 1.2 to 2 mm to the right (or left), this can be detected by the mark sensor (
8-1) The mark sensor on the left side (or right side) of (8-1) and the mark sensor (8-2) detect [this mark sensor on the left side (or right side) and the latter mark sensor] is a relative position that deviates from the corresponding position mark (4). ], If there is a latitude shift to the right (or left) of 2 mm or more, the mark sensor (8
-3) The mark sensor on the right (or left) side of (8-3) and the mark sensor (8-2) detect [this mark sensor on the right (or left) side and the latter mark sensor, The related position deviates from the corresponding position mark (4). 1.0.4-1.2mm latitude deviation detection,
Based on the detected latitude deviation of 1.2 to 2 mm, the drive machine (20) is rotated forward (or reverse) by a predetermined amount when necessary in the same manner as in the format of FIG. hand,
Based on the detection of a weft deviation of 2 mm or more, the drive machine (20) is put into a non-operating state and the operation of the loom itself is stopped in the same manner as in the format shown in FIG. In the format shown in Figure 4, foil yarn (3a
) (and, if necessary, the position of hit (18)) may be performed in the same manner as in the format shown in FIG.

As is clear from the above, the operation control of the drive machine (20) by the sequence control device (23) is performed after each weft insertion. The sequence control device (23) required for this purpose may be turned on and off by an appropriate means, for example, by turning on and off a weft insertion detection sensor (36), which will be described later.

In this way, the foil yarn (3
When a) has a small latitude shift or a medium latitude shift, the hit (18) is displaced to the required position with respect to the latitude shift, and this displacement of the hit (18) causes the hit (18) to be moved to the required position.
18) for the next rapier thread gripping body drive lever (1
90), in other words, the opening timing of the yarn gripping body (19) is corrected to the timing corresponding to the weft deviation, thereby bringing the patterned foil yarn back to the normal weft insertion position. It is regulated as follows.

In the case where the mark sensor arrangement format is as shown in Figures 3 and 3-1, if the initially set operating amount of the drive machine (20) is changed during or after the installation of the device of the present invention, what should be done about it? It is advantageous to have more "variables" than in the arrangement formats shown in FIGS. 4 and 4-1, since there are more mark sensors. The mark sensor arrangement formats shown in FIGS. 4 and 4-1 have a simpler structure than the former format since the number of mark sensors is smaller.

Before being cut by the scissors (2), the yarn end (3a') is partially attached to the holder finger (as shown in FIG. 13).
2b') and the clamp (9). At this point in time, the inserted foil yarn is released from being held by the yarn gripping body (19). In this way, the foil thread is pulled back a little to the left in FIG. 13 by the above-mentioned clamping until it is cut with scissors. The amount of pullback is approximately constant each time the weft is inserted, provided that the position where the fixed blade (2C) meets the movable blade (2a) during rotation remains unchanged.

On the other hand, if the position where the fixed blade (2C) meets the movable blade (2a) can be changed, the fixed blade (
By positioning 2c), the time interval from the start of the clamping to the yarn cutting becomes shorter, and the amount of pulling back of the foil yarn decreases, and when it is positioned downward, the amount of pulling back increases. Therefore, if there is a weft misalignment in the weft-inserted foil yarn, by adjusting the position of the fixed blade (2C) accordingly, the position of the foil yarn itself can be corrected immediately after weft-insertion is completed before cutting. can.

The following describes how to correct the position of the foil yarn itself immediately after weft insertion and before cutting.

If there is a latitude shift, the mark sensor (8-1) (8-2
) The predetermined items in (8-3) are detected as described above. Then, based on this detection, under the control of the sequence controller (23), the required side of the solenoids (40) and (41) is energized for small latitude deviations, and the lever (38) is moved from the neutral position. The fixed blade (2C) is rotated as many times as required in the left and right directions in FIG. 11 until it hits the first stopper (48), thereby displacing the fixed blade (2C) from the neutral position as many times as required in the left and right directions in the figure. In the middle latitude shift, under the control of the sequence controller (23), the other solenoid (54) is first energized and the first stopper (
48) (48) is moved out of the working area of the rotation path of the lever (38), and in this state, the desired side of the solenoids (40) and (41) is energized, and the desired left and right sides in Fig. 11 are energized. The lever (38) is rotated from the neutral position until it hits the second stopper (49), thereby displacing the fixed blade (2C) from the neutral position to the required number of left and right turns in the figure. For large latitude shifts, the sequence controller (23)
Solenoids (40), (41) and (54) are kept inactive under the control of .

In this way, if there is a weft misalignment, the inserted foil yarn will
In accordance with small and medium latitudinal deviations, the first
The amount of pulling back to the left in Figure 3 is adjusted, and the position of the foil yarn itself is corrected immediately after weft insertion and before cutting in accordance with the cotton misalignment.

That is, the weft deviation correction of the inserted foil yarn is carried out in two ways: regulating the timing for releasing the foil yarn grip as described above and correcting the position of the foil yarn itself. Therefore, the weft insertion position regulation of the foil yarn is sufficiently accurate.

In the above-mentioned foil yarn weft insertion using the rapier (1), the foil yarn whose yarn end is waiting at a predetermined location is fixedly regulated in position by the yarn guide (15) at a location slightly upstream of the scissors (2). In this state, the foil yarn is gripped by the rapier (1) and inserted into the weft. ) and are regulated to a certain relative position in the vertical direction.

In addition, during the weft insertion, when the rapier (1) releases its grip on the weft insertion foil yarn and reaches the final retreat end, the weft insertion detection sensor (36) is activated, thereby detecting weft insertion.

On the other hand, when the foil yarn (3a) is inserted in the normal direction, that is, facing up, the inserted foil yarn (3b)
The surface display mark (31) on the ear also occupies the normal surface on the front and back,
The mark (31) is detected by the surface display mark detection sensor (32) while ensuring the above-mentioned vertical positioning of the ear. When the weft-inserted foil thread (3b) is reversed, the surface display mark (
31) also occupies the reversed surface, in other words, the surface that does not face the surface display mark detection sensor (32), and therefore the sensor (32) does not react.

The surface display mark detection sensor (32) detects or non-detects the surface display mark (31) of the weft inserting foil yarn (3b), and together with the weft inserting detection at a predetermined time by the weft inserting detection sensor (36), Responsible for detecting the front and back sides of the weft insert foil yarn (3b). This detection of front and back reversal of the weft inserting foil yarn is performed when the surface display mark detection sensor (32) is inactive and the weft inserting detection sensor (32) is not activated.
Based on the operation of 36), alarms such as buzzers and lamps can be activated to confirm the situation, and if necessary, the foil thread weft insertion system of the loom can be set appropriately when front and back reverse weft insertion of foil threads occurs. It may be stopped by appropriate means.

[Brief explanation of the drawing]

Fig. 1 is a front view schematically showing the standby state of the foil yarn together with a rapier in an embodiment of the present invention, Fig. 2 is a schematic plan view of the main parts of a loom in an embodiment of the invention, and Fig. 3 is a A perspective view showing an example of the arrangement format of the position mark sensor, Part 3-
Figure 1 is a diagram showing the relative positions of each mark sensor in the mark sensor arrangement of the type shown in Figure 3, Figure 4 is a perspective view showing the other side of the position mark sensor arrangement type, and Figure 4-1 is Figure 5 is an exploded, enlarged perspective view of the scissors in the same embodiment, and Figure 6 is the rapier tip and rapier thread gripper for opening in the same embodiment. FIGS. 7 to 9 are explanatory diagrams showing the operating state of the movable clamping blade in the order of steps, and FIG. 10 is an enlarged sectional view taken along the line X--X of FIG. 6. FIG. 11 is an elevation view showing an example of a position adjustment means for the fixed scissors blade, and FIG. 12 is a perspective view showing an example of a mechanism for moving the first stopper in the position adjustment means shown in FIG. , FIG. 13 is an elevational view illustrating the pulling back of the foil thread in the weft direction, and FIG. 14 is a plan view showing a modified example of the lever for driving the rapier thread gripper. (1) Rapier (2) Scissors (2a) Movable scissors blade (2b) Movable scissor blade holder (2b')... Part of the movable scissor blade holder fingers (
2C)...Fixed scissor blade (3)...Long roll of patterned foil thread (3a)...
・Foil yarn (3a') pulled out from the winding material...End of the yarn (3b)...Foil yarn (4) inserted into the weft...Position mark (Ω)...Constant voltage Pull-out line (6)...Pinch feed roller (7)...Thread path (8-1), (8-2), (8-3)...Position mark sensor (9)...Clamp (15)... Thread guide (16)... Presser foot (18)... Rapier thread gripping body release hit (19)...
... Rapier thread gripper (190)... Lever (19a) for driving the rapier thread gripper... First lever (19b)... Second lever (20)... For hitting Drive machine (31)...Surface display mark (32)...Surface display mark detection sensor (36)...
・Weft insertion detection sensor (38)...Lever (40), (41), (54)...Solenoid (48)
)...First stopper (49)...Second stopper (above) Figure = A: === Figure Figure t01J Indication of the December 19, 1988 case of the seal of the procedural amendment Patent Application No. 177681 filed in 1988. Name of the invention: Patterned foil yarn weft insertion automatic position regulation letter for looms. Nakatsuka Kogyo Co., Ltd. Embedded voluntary amendment. Specification middle box, page 5, line 10, ``Flat yarn.'' Correct it as "thread". (that's all)

Claims (2)

[Claims] (1) A loom including a rapier or gripper shuttle and scissors in a fixed position as components, in which a long winding of foil yarn having pattern elements in a predetermined position is arranged in a fixed position,
The thread end of the patterned foil thread that has been pulled out is made to stand by at a predetermined location, the thread end of the foil thread is gripped by the rapier or gripper shuttle, and the weft is inserted, and the weft inserted foil thread is inserted using the scissors. In a loom used to weave a woven fabric that at least partially exhibits a pattern resulting from the accumulation of pattern elements of adjacent foil threads in the warp direction of the woven fabric by repeatedly performing the above-mentioned weft insertion under the specification of cutting. , the foil yarn long winding has at least three position marks spaced apart from each other at fixed positions in each one weft insertion range of the portion corresponding to the selvage of the fabric, and the winding is A thread line corresponding to at least one weft insertion range on the shed side of the foil yarn pulled out from the shed is set as a yarn pull-out line extending in a certain space, and a plurality of Mark sensors are arranged in parallel along the line, and the foil yarn in the line is moved to the forward limit by the forward motion when the rapier or gripper shuttle is at rest and when the rapier or gripper shuttle moves forward. Arranging a presser foot that restrains the weft until it approaches or reaches the forward limit, releases the restraint when the forward limit is approached or reaches, and continues the release during the weft insertion movement of the rapier or gripper shuttle; A lever disposed at a fixed position on the return travel path of the gripper shuttle and driving the thread gripping body of the rapier or gripper shuttle collides with each other so that the lever that releases the thread gripping body can be displaced in the weft direction of the fabric; Appropriately, a drive is coupled to drive the actuator which is actuated based on the detection of weft deviation of the foil yarn position marks in the constant yarn draw-off line by the mark sensor, the mark sensor having at least one arrangement for each of the position marks. In addition, there are two types of arrangement: one corresponding to detecting a small weft deviation of the foil yarn at the constant yarn pull-out line, one corresponding to detecting a middle weft deviation, and one corresponding to detecting a large weft deviation. Furthermore, these mark sensors consist of two sets: one for detecting weft deviation to one side of the foil yarn and one for detecting weft deviation to the other side. , the scissors include as constituent elements a mechanically driven movable blade and a fixed blade whose position relative to the movable blade can be changed,
Furthermore, the scissors have a pull-back means for pulling back the foil yarn slightly in the weft direction until the foil yarn that has been inserted into the weft and is released from the grip is cut. A position adjustment means is added for displacing the scissor fixed blade to a predetermined position so as to regulate the amount of pulling back the foil yarn according to the small and medium weft deviations of According to the weft deviation of the foil yarn in the weft direction, the abutment is driven forward or backward to displace the abutment by a predetermined amount to a desired side in the weft direction of the fabric, and is stopped and in an inactive state. The feature is an automatic position regulating device for inserting patterned foil yarn weft into the loom. (2) The lever that drives the thread gripping body of the rapier or gripper shuttle has a first lever that has an inclined cam with a steeply sloped rear end surface and extends from the thread gripping body, and is attached to the rapier or gripper shuttle. and a second lever whose tip contacts the inclined cam and has a gently sloped contact surface against which the thread gripping body is opened.
1) Automatic position regulating device for inserting patterned foil yarn weft in the loom described above.