JPH0380896B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic weft insertion position regulating device for weft insertion of patterned foil threads in a loom, particularly a loom including a rapier or gripper shuttle as a component. A long roll of foil yarn, for example, a thread cut by cutting foil, which is referred to as a pulling foil by those skilled in the art and is used in the conventionally known typical sequential drawing technique described below, is placed in the order in which it should be weft-inserted. A long winding material corresponding to 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 passed through the rapier or the above-mentioned rapier. By repeatedly performing the above weft insertion under the specifications of gripping and inserting the weft yarn (synonymous with weft insertion) with a Gritspa shuttle and cutting the inserted foil yarn with mechanical power-driven scissors at a fixed position, the adjacent The present invention relates to an automatic weft insertion position regulating device for a patterned foil yarn weft insertion for a loom configured 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 and the pattern elements of the foil yarn in the warp direction of the fabric.

Conventional technology and its problems It is conventionally known to express a pattern using a sequential drawing technique by inserting a patterned foil thread using the method described above. In other words, the flat threads of the so-called pulled foil obtained by slitting 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 are slit in the required order. By weft insertion, the weft insertion cycle is superior to the pattern expression method that reproduces the pattern originally expressed on the original fabric on the fabric, and high productivity can be obtained.

However, on the other hand, when creating a pattern using the sequential drawing technique described above, if the patterned foil threads are not inserted into the weft at a position with substantially no deviation in the weft direction of the fabric, the pattern will be distorted, and the adjacent foil threads will overlap with the foil threads. A good pattern appearance is not achieved by the accumulation of thread pattern elements. Moreover, when wefting the foil yarn on a loom, the foil yarn is fed out from a long roll of foil yarn under the guidance of a pinch roller, but unevenness in the foil yarn tension due to vibrations of the loom, changes in temperature and humidity, etc. This often causes misalignment.

Conventionally, in a loom configured to weave a fabric that expresses a pattern using the above-mentioned sequential drawing technique, there is still no means to ensure that the position of the weft insertion of the foil yarn is automatically regulated to prevent the pattern from collapsing. Not embodied. 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 the conventional weft insertion system using a rapier or grip shuttle, there are variations in the waiting posture and position of the foil yarn ends at predetermined locations, and the range of foil yarn types that can be applied to the same loom may vary depending on the material. There were considerable restrictions on one or more of the following: , thickness, width, thickness, etc.

The present invention is capable of automatically controlling the weft insertion position of patterned foil threads to prevent pattern collapse in weaving using the above-mentioned type of loom, and moreover, it is possible to automatically control the weft insertion position of patterned foil threads in order to prevent the pattern from collapsing. It is possible to apply a wide variety of foil threads, which greatly exceeds that of the rapier. Alternatively, it is an object of the present invention to provide a device that can be efficiently and simply produced using a sequential weft insertion technique using a grip shuttle weft insertion method.

Another object of the present invention is to develop a device that can automatically correct the position of the foil-inserted foil yarn itself according to the degree of weft deviation, and that can do this without deteriorating the foil-insertion cycle for a purpose. It is in.

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

Foil thread is pulled out from a long roll of patterned foil thread, which has at least three position marks placed at regular intervals at predetermined positions corresponding to the edges of the fabric in each foil insertion area. This is a loom for which the long roll of foil yarn is placed in a fixed position, and the foil is inserted (synonymous with weft insertion) with a rapier or gripper shuttle (hereinafter abbreviated as rapier). In a loom for weaving a foil fabric in which the foil yarn is cut by scissors at a fixed position, at least the thread equivalent to one foil insertion range on the shed side of the foil yarn pulled out from the long roll of foil yarn. The line is a yarn pull-out line extending in a certain space, and a plurality of mark sensors for detecting the position marks of the foil yarn on the constant yarn pull-out line are arranged side by side along the line, and a When the rapier is at rest and when the rapier moves forward, the foil thread is restrained until the forward movement approaches or reaches the forward limit, and the restraint is released when the forward limit is approached or reached, A presser foot is arranged to continue the release during the weft insertion movement of the rapier, and a lever that is placed at a fixed position on the return traveling path of the rapier and drives the thread gripping body of the rapier collides with the thread gripping body. The abutment for opening can be displaced in the weft direction of the fabric, and a drive mechanism is coupled to the corresponding part to drive a drive machine which is activated based on detection of weft deviation of the foil yarn position mark in the constant yarn drawing line by the mark sensor. The mark sensor has at least one arrangement for each of the position marks, one corresponding to detecting a small weft deviation of the foil yarn in the constant yarn drawing line, and one corresponding to detecting an intermediate weft deviation. These mark sensors include one for detecting a weft shift on one side of the foil yarn, and another for detecting a weft shift on one side of the foil yarn, and another for detecting a large weft shift. The scissors include a mechanically driven movable blade and a fixed blade whose position relative to the movable blade can be changed in the foil yarn transverse direction, and Furthermore, the scissors move slightly in a predetermined direction to cut the foil thread that has been inserted into the weft and is released from the grip, bending a part of the foil thread into the shape of a hook, and cutting the foil thread between it and the clamp at the fixed position. the scissor fixed blade has fingers for pinching, and the scissor fixed blade is configured to detect the small and medium weft deviations of the foil yarn and regulate the amount of pulling back of the foil yarn by the pinching according to the deviations; A position adjustment means is added for displacing the fixed scissor blade to a predetermined position, and the drive machine is configured to:
A patterned foil yarn weft for a loom, characterized in that it is configured to be driven forward or backward so as to displace the hit by a predetermined amount to a desired side in the weft direction of the fabric, and then stop and take a non-operating state. Automatic insertion position regulating device.

Function In the present invention, the foil yarn drawn out from a long winding of foil yarn having pattern elements at a predetermined position and placed at a predetermined position has its yarn end waiting 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 the cutting at predetermined locations with scissors are repeated in the same manner, so that the adjacent foil yarns and the pattern elements of the foil yarn on the fabric are aligned in the warp direction of the fabric. , a pattern consisting of parallel accumulation of the pattern elements appears on the fabric.

In this weft insertion, when the inserted foil yarn is at the normal weft insertion position, there is a constant 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.

Small (usually 0.4 to 1.2 mm) or medium (usually 0.4 to 1.2 mm) or medium (usually
1.2~2mm) When a latitude shift occurs (0.4mm
A latitudinal deviation of less than is usually acceptable. ), the position mark of the foil yarn on the above-mentioned constant yarn drawing line also shifts in weft, and the small mark sensor for detecting weft shift or the mark sensor for detecting weft shift detects the degree of the shift in weft and whether it is on the left or right side. Based on this detection, the corresponding drive machine is driven forward or backward and stopped so as to displace the yarn gripping body by a predetermined amount to the desired side in the weft direction of the fabric.
The timing of the collision of the rapier thread gripping body drive lever with respect to the relevant object, that is, the timing of the release of the rapier thread gripping body, is regulated to the timing corresponding to the above-mentioned weft deviation, and according to this regulation, the patterned foil yarn is brought to the normal weft insertion position again. It will be. Large (usually 2mm or more)
When a latitude shift occurs, a large latitude shift detection mark sensor detects this, and based on that detection,
The corresponding drive is left inactive.

When the rapier is at rest, the foil yarn on the above-mentioned constant thread draw-out line is held at the part corresponding to the presser by a presser foot placed at the position of the line.
During the forward movement, the forward movement is restrained until the forward movement limit is approached or reached. Therefore, the fixed positioning of the constant yarn drawing line is not substantially disturbed by vibrations of the loom or the like.

During weft insertion of foil yarns using a rapier, the degree of weft deviation that occurs varies. In addition, if a weft shift occurs and the position of the rapier thread gripper opening stop is changed to correct this, the changed position may be the weft weft insert for the next weft insertion due to the effects of high-speed running of the rapier, vibrations of the loom, etc. Regulation of the position of the thread is not always appropriate in practice.

On the other hand, even small sensors suitable for practical use as sensors for detecting position marks on foil threads have a width of several millimeters.

Thus, by placing the mark sensor in a fixed position,
When there is a weft shift in the inserted foil yarn, if the degree of weft shift is detected by the positional shift of one position mark on the foil yarn with respect to the sensor, it is possible to compare even if multiple sensors are arranged side by side. Latitude shift can only be detected as having a rough degree. For this reason, the specification of changing the position of the rapier thread gripper release abutment based on the weft deviation detection by the one position mark and sensor does not allow for sufficiently detailed position regulation. Incidentally, the change in position may result in a new weft deviation, which sometimes develops as a chain reaction, causing the weft insertion of the foil yarn to meander.

In the present invention, this problem is taken care of by specifying a certain configuration of the loom to which the device of the present invention is attached and by arranging the mark sensor.

In the present invention, as a loom to which the device of the present invention is added, a required number of long windings of foil yarn with position marks and patterns are arranged at predetermined positions,
This is a loom adapted to insert foil into the foil yarn, and the foil thread drawn from the long roll of foil thread is moved through a certain space by at least an amount equivalent to one foil insertion range on the shed side. A mark sensor for detecting the position mark of the foil yarn on the constant yarn pull-out line is specified as an extending yarn pull-out line with a presser foot that maintains the fixed position of the constant yarn pull-out line for a predetermined period of time. At least one arrangement for each of the position marks, one corresponding to detecting small weft deviations of the foil yarn at a constant yarn withdrawal line and one corresponding to detecting medium weft deviations. We are applying a system that includes a system with a configuration corresponding to the detection of large latitudinal deviations.

According to this configuration of the present invention, a mark sensor is used to detect small latitude deviations, a mark sensor is used to detect medium latitude deviations, and a mark sensor is used to detect large latitude deviations. The mark sensor can detect the degree of latitude deviation by classifying it into small, medium, and large, and correct the hit position accordingly for small and medium latitude deviations. In the case of a large weft shift, the pertinent 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 the position mark and the mark sensor.

Furthermore, in the present invention, the scissors for cutting the foil thread include:
The component includes a mechanically driven movable blade and a fixed blade whose position relative to the movable blade can be changed in the foil yarn transverse direction, and a predetermined blade is inserted just before cutting the foil yarn that has been inserted and released from gripping. The scissors are equipped with fingers that move in the direction of the scissors, bend a part of the foil thread into the shape of a hook, and hold it between the fixed scissor blade and the clamp at a fixed position. A position adjusting means for displacing the fixed scissor blade to a predetermined position is added so as to regulate the amount of pulling back of the foil yarn according to the weft deviation in the middle. According to this configuration, after the grip of the foil-filled foil yarn is released and until it is cut, the foil yarn is held in the weft direction by being held under the hand-shaped bend of the hook by the fingers and holder. By regulating the amount of pullback of the foil yarn based on the slight pullback and 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 shortly before cutting.

Effects of the Invention As described above, according to the present invention, the weft of the foil yarn is controlled by the rapier while the opening timing of the rapier yarn grip is regulated so as to immediately respond to both weft insertion at the normal position and weft misalignment at a predetermined time. can be put in place,
Furthermore, in addition to guaranteeing the fixed positioning of a constant draw-out line, the position of the inserted foil yarn itself can be corrected according to the degree of weft misalignment. It is possible to avoid the pattern collapse. Moreover, this can be achieved in accordance with the present invention as described above.

Furthermore, according to the present invention, the weft deviation in the position of the foil thread itself can be automatically corrected after the foil thread is released from the grip and before it is cut, which reduces the foil thread cycle. It can be done without any purpose.

In this way, according to the present invention, it is possible to apply a wide variety of foil yarns in one or more of material, thickness, width, etc., far exceeding the conventional methods, and therefore, it is possible to apply a wide variety of foil yarns that are far beyond the conventional methods. In addition, even complex, delicate and/or elegant picture patterns such as those seen on interior decorations can be used in a good manner.
Rapier weft insertion allows for efficient and concise sequential drawing techniques.

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

In the figure, reference numeral 1 indicates a rapier 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, 3 is a long roll of foil thread, 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 the same way as before. Shear operated. In the scissors 2, the movable blade holder 2b to which the movable blade 2a is attached and operates to shear the movable blade holder 2b occupies the side farther from the fabric selvage (the left side in FIG. 1) with respect to the fixed scissors blade 2c.

The scissors 2 move in a predetermined direction a little before the foil yarn that has been inserted and released from the weft is cut by the scissors 2, as will be described later, and bends a part of the foil yarn into the shape of a hook. At least it has fingers that are held between it and the clamp in place. The following scissors movable blade holder finger portion 2b' can be advantageously applied to the finger, and the following clamp 9 can be advantageously applied to the clamp.

The fixed scissor blade 2c is fixed, that is, immovable, with respect to the shearing action of the movable scissor blade 2a, but the position where it meets the movable scissor blade 2a can be adjusted by rotation of the movable scissor blade 2a. A preferable example of the means for adjusting the position is shown in FIGS. 11 and 12. The example of the embodiment shown in FIGS. 11 and 12 has the following structure.

The intermediate portion of the arm-shaped holder 2c' of the fixed blade 2c is pivotally supported by a pin 37 placed at a fixed position on the machine, and one end of a lever 38 placed at a fixed position on the loom is connected to the lower end of the holder 2c' as shown in FIG. They are connected via a rod 39. The other end of the lever 38
It is connected to a solenoid 40 for pulling it toward the left in the figure, and a solenoid 41 for pulling it toward the right in the figure. 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 its other end, which roller 44 has a V in place.
It is inscribed in a V-groove 46 of a groove-shaped positioning plate 45 under the force of a spring 47. The positioning plate 45 and the roller 44 position and hold the lever 38 in a neutral position through the arm 43 without being biased to either the left or right while the solenoids 40 and 41 are not energized. Based on this neutral position maintenance of the lever 38, the fixed blade 2c also
During de-energization of 0 and 41, the meeting position with the movable blade 2a is held at a neutral position. The above lever 38
First stoppers 48, 48 are arranged facing left and right of the lower end portion of the holder, and second stoppers 49, 49 are arranged slightly above these. The stoppers 48, 48, 49, 49 are provided with position adjustment screws 50.
has. The first stoppers 48, 48 will be described later. The second stopper 49, 49 occupies a relative position corresponding to a small weft deviation of the inserted foil yarn, and the second stopper 49, 49 occupies a relative position corresponding to an intermediate weft deviation. The first stoppers 48, 48 are attached to a bracket 51. A shaft 53 having one end connected to an arm 52 is fixed to the bracket 51, and a solenoid 54 is connected to a connecting rod 55 at the other end of the shaft 53.
are connected via. When the solenoid 54 is energized, the bracket 51 is rotated by the solenoid 54 using the shaft 53 as a fulcrum via the connecting rod 55, the arm 52, and the shaft 53, thereby causing the first stoppers 48, 48 to move against the lever 38. The lever 38 is moved to a location where it does not hit, that is, outside the range of the rotational 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.
It is better to form a space 29 that extends in the vertical and horizontal directions and has a size corresponding to the width of the foil yarn (see FIG. 10). The right side surface of the rapier 1 in FIG. 10, that is, the side surface on which the rapier tip passes through the later-described thread end portion 3a' of the foil thread 3a, as shown in FIG. In order to reduce the push in the right direction, the first
It is preferable to provide a chamfer 30 as shown in FIG.

The long roll of foil yarn 3 is made by sequentially connecting flat yarns made of so-called pulling foil in the length direction in the order of weft insertion, which is used in a conventional pattern revealing method using a typical sequential drawing technique. It is sufficient to apply a material corresponding to the foil yarn having pattern elements (not shown) arranged in parallel in the warp direction of the fabric (not shown) in the required portions, and the foil yarn long winding material 3 may be Three position marks 4 are made in advance at regular positions of the parts corresponding to the selvedges of the fabric in each weft insertion range at intervals.
For each long foil yarn roll 3, each weft insertion range is as follows:
It is better to apply surface display marks 31 on the front or back surface of other fixed positions of the portion corresponding to the selvage of the fabric. In the case shown in the figure, the surface display marks 31 are arranged corresponding to both the left and right ears of the fabric in each weft insertion area of the long foil yarn roll 3 (only one surface display mark is shown in the figure). showed that.).

The long roll of foil yarn 3 is placed at a fixed position on the loom, and the foil yarn 3a is pulled out from this through a yarn path 5, a pinch feed roller 6, and a yarn path 7, and the end of the foil yarn is brought to a predetermined position. You will be forced to visit specific places. 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 yarn path 5 is shown in a perspective view for the sake of easy understanding, but its installation is such that the surface that matches the inner space of the yarn path traverses the drawn foil yarn. It is. The drawn-out foil thread 3a is made into a thread-drawing line l extending in a certain space by an appropriate means, such as a thread guide or guide roller, at least in a portion corresponding to one weft insertion range on the shed side. . In the illustrated case, this is done by means of a thread path, to which the thread path 7 and the thread path 15 described below are assigned.

A plurality of mark sensors for detecting the position mark 4 of the foil yarn 3a on this constant yarn drawing line l are arranged side by side along the line l. The plurality of mark sensors are arranged in at least one position for each of the three position marks 4, 4, 4, for example in the third position mark sensor.
As shown in the figure, the left and right position marks are placed in two positions, and the middle position mark is placed in one place, or as shown in Figure 4, each position mark is placed in one place. shall be. These arrangements include an arrangement corresponding to detecting a small weft deviation of the foil yarn 3a in the constant yarn drawing line l, for example, a weft deviation of 0.4 to 1.2 mm, an intermediate weft deviation,
For example, the arrangement corresponds to detecting a latitude shift of 1.2 to 2 mm, and the arrangement corresponds to detecting a large latitude shift, for example, a latitude shift of 2 mm or more. In the arrangement for detecting small latitude deviation, the arrangement for medium deviation detection, and the arrangement for detecting large latitude deviation, 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. In the format shown in FIG. 4, 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 arrows indicate the vertical axis of each mark sensor (the optical axis of the optical sensor, which will be described later), and the position occupied by the vertical axis, that is, the mark sensor, is at the constant thread withdrawal line l. This is for the case where there is no weft deviation in the foil yarn 3a. The length of each position mark may be appropriately determined according to the arrangement of the mark sensor, and
In the arrangement shown in the figure, for example, the left and right position marks are 6 mm, the middle position mark is 4 mm, and the 4-1
In the arrangement shown in the figure, for example, each position mark is 2.4 mm.
In any of the above arrangements, the spacing 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 one of the small, medium, and large latitude deviation detection mark sensors mentioned above.
Mark sensor for detecting the lower limit for latitude deviation of 0.4 mm or more, mark sensor 8-2 for detecting the lower limit for latitude deviation of 1.2 mm or more, 8-3 lower limit for latitude deviation of 2 mm or more This is a mark sensor for detecting. In the format shown in Figure 4, the mark sensor that detects the lower limit (0.4 mm) of small latitude shifts also serves as the mark sensor that detects the lower limit (2 mm) of large latitude shifts. These mark sensors 8-1, 8-2, and 8-3 consist 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. There is. In both of the formats shown in Figures 3 and 4, the mark sensor for detecting latitude deviation at the required position is also used for detecting 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 mark 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 the position mark 4 can be a color mark of a color sensed by the light sensor, for example, black.

When performing weft insertion as described below with Rapier 1,
A sensor 32 for detecting the surface display mark 31 of the foil yarn under the weft insertion is arranged at a location corresponding to the mark 31. Needless to say, the sensor 32
If the mark 31 is on the front side of the foil thread 3a, the corresponding part of the mark 31 is on the front side of the weft inserting foil thread, and when the mark 31 is on the back side, the corresponding part of the mark 31 is on the back side of the foil thread. It is the arrangement. As the surface display mark detection sensor 32, an optical sensor similar to the mark sensor can be applied, and as the mark 31, a color mark of the color that the surface display mark detection sensor 32 senses can be applied.

Reference numeral 9 denotes a clamp for the cut end of the drawn-out foil thread, and the clamp 9 is arranged at a fixed position corresponding to the back surface of the scissors movable blade halter 2b (left side surface in FIGS. 1 and 5). has been done. The clamp 9 is biased by a spring of such strength that the end of the cut thread is clamped by the clamp 9 and released by pulling the end of the thread under the grip of the rapier 1, which will be described later. being pushed to the side. 10 is a spring for urging the spring, and 11 is a spring strength adjusting screw.
The clamp 9, spring 10 and adjustment screw 11 are mounted on a fixed mounting 1 on the loom frame (not shown).
Equipped with 2. 13 is a pressing pin for the clamp 9, and 14 is a ball interposed between the pin 13 and the spring 10. The clamp 9 is pressed against the back surface of the movable scissors blade holder finger portion 2b' which is in a closed state with respect to the fixed scissors blade 2c under the spring bias of the spring 10.

A yarn path 15 for the constant yarn pull-out line l is provided slightly upstream of the clamp 9 (on the left side in FIG. 1). The thread path 15
may have a groove for guiding the threading of the foil thread 3a or a protrusion extending upward on the upper surface.

At the point of the constant thread withdrawal line l, preferably further upstream from the thread path 15, a line l is provided when the rapier 1 is at rest and during its forward movement until it approaches or reaches the forward limit in the forward motion.
A presser foot 16 is arranged which restrains the foil yarn under pressure, releases the restraint when the rapier 1 approaches or reaches the forward limit, and continues the release during the weft insertion movement of the rapier 1. This presser foot 16
Control of pressing and releasing at specified times is done by appropriate means.
For example, this may be done through an interlocking mechanism by actuating a suitable moving member of the system for reciprocating the rapier 1. 17 is a fixed presser foot that faces the presser foot 16.

Reference numeral 18 denotes a lever 190 that is placed at a fixed position on the return movement (weft insertion) running path of the rapier 1 and collides with a lever 190 that drives the rapier thread gripping body 19 to release the thread gripping body 19. The lever 18 is movable in the weft direction of the fabric on the loom, and a drive unit 20 is drivingly connected to the lever 18. The drive machine 20
For example, a small reversible motor may be applied, and the drive connection between the hit 18 and the driver 20 can be achieved by, for example, fixing a nut 21 at the base of the hit 18, and connecting the driver 2 with the nut 21.
This can be done by screwing the adjusting screw 22 connected to the output shaft of 0 into the nut 21.

The drive unit 20 includes the mark sensor 8-
1, 8-2, and 8-3 are connected via the sequence control device 23. This sequence control device 23
Computers can be applied to The computer inputs and outputs signals for controlling the operating amount of the drive machine 20, forward and reverse directions of the drive machine 20, which will be described later.
Input and output signals for executing stop and deactivation control; input and output signals for regulating the displacement of the fixed scissor blade 2c; input and output signals for selecting the displacement direction of the fixed scissor blade 2c, which will be described later; and the necessary data for executing the operation amount regulation of the drive machine 20, the forward and reverse directions of the drive machine 20,
Necessary data for executing stop and deactivation control, necessary data for executing the displacement amount regulation of the fixed scissors blade 2c, and necessary data for executing the displacement direction selection of the fixed scissors blade 2c were stored. memory and
A microcomputer that performs arithmetic processing for regulating the operating amount of the driving machine 20, controlling forward, reverse, stopping, and non-operating, regulating the displacement amount of the fixed scissor blade 2c, and performing arithmetic processing for selecting the displacement direction. Contains the processor.

The above computer, mark sensor 8-1, 8
-2, 8-3 and the driving device 20 are such that the computer drives the solenoids 40, 41 which are part of the position adjustment system of the scissors fixed blade 2c described above, and the bracket 51 of the first stoppers 48, 48. It is shown in FIG. 6 as a block diagram together with the relationship of the solenoid 54 for this purpose. The block diagram shown in FIG. 6 is based on the arrangement of the mark sensors as shown in FIG. 3. The block diagram of the mark sensor arrangement in FIG. 4 has been omitted, but will be clear to those skilled in the art. 24 is a rapier thread gripper 1
9 shows a spring which always tends to close. Reference numeral 25 denotes a weight for removing slack in the foil yarn, which is vertically movably suspended in the middle of the foil yarn 3a between the pinch feed roller 6 and the yarn path 7, as required, and has a reflective surface on the required side. It is a board. The weight plate 25 is
Opposing guide grooves extending vertically (not shown)
The left and right side edges are fitted inside, and vertical movement is guided by the grooves. When the weight plate 25 is provided, a sensor 26 that captures the reflected light from the reflective surface is placed at a fixed position on the side corresponding to the reflective surface. The sensor 26 is electrically or electronically connected to a drive device (not shown) such as a motor for the pinch delivery roller 6, and drives the roller 6 at a predetermined time based on the position detection of the weight plate 25. make it stop. The sensor 26 can be an optical sensor similar to the mark sensor described above. The pinch feed roller 6 is kept in operation during the following weft insertion by the rapier 1. Reference numeral 28 indicates an operating lever of the movable scissors blade holder 2b, and the lever 28 is rotated in the vertical direction in FIG. 5 at a predetermined time through an interlocking medium (not shown) in conjunction with the reciprocation of the rapier 1.

At a certain point after the rapier 1 releases its grip on the weft-inserted foil yarn (described later) and before the scissors 2 cuts the foil yarn, for example, when the rapier 1 reaches the final end of the double movement (the foil yarn is cut) The loom is equipped with a weft-insertion detection sensor 36 which is activated to detect weft-insertion. The sensor 36 is
Something similar to a mark sensor or a proximity switch may be applied, and if a movable member in the foil thread insertion device, such as rapier 1 or another movable member linked thereto, is displaced to a predetermined position during foil thread insertion. The sensor is activated at a predetermined time by an appropriate method, such as by placing the sensor at a location corresponding to the detection.

When performing the following weft insertion using the rapier 1, an appropriate number of warp plying yarns are placed on the loom at a location corresponding to the edge of the inserted foil yarn and at a location other than the surface display mark detection sensors 32, 32. It is preferable to provide it on top. The warp splicing yarns are interwoven with the weft-inserting foil yarn selvage by the same means as for the general warp yarns, or intersect with the selvedges on the lower surface of the selvage. It is sufficient that the weaving is sparse in the warp direction. The warp splints are shown in FIG. 2, in which the woven warp splints are designated by the numeral 33 and the lower cross warp splints are designated by the numeral 33'.
The warp splints shown in FIG. 2 are a combination of woven threads and lower-crossing threads. The end of the warp splicing yarn 33 to be interwoven with the weft-inserted foil yarn edge is wound around a fabric winding beam (not shown) of the loom (not shown) in the same way as the normal warp yarn W. Warp splint thread 3
3' does not need to be wound around the take-up beam, and may be placed under an appropriate tension.

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 a shuttle box and 35 indicates a reed in the power loom. 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, and the foil yarn is threaded by the rapier 1. A shedding control means is added to the power loom to cause the warp threads to perform the shedding motion necessary for 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.

The patterned foil yarn 3a is drawn out from the foil yarn long winding material 3 through the yarn path 5, roller 6, yarn path 7 and 15, and has its yarn end exposed at a predetermined location.
When the rapier 1 is in a standby state in preparation for weft insertion, the end of the thread is attached to the back of the movable scissor blade holder 2b and the spring 1
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 biased by 0. In this standby state, the foil yarn 3a forms a yarn pull-out line l extending through a space with a constant yarn feed corresponding to at least one weft insertion area on the shed side. Further, in the standby state, the foil yarn 3a assumes an oblique orientation as shown in FIG. 1 with its yarn end 3a'.

When the weight plate 25 is provided, the weight plate 25 occupies a lowered position due to its weight when the foil thread 3a is in the above-mentioned standby state, and the sensor 26 faces the reflective surface of the weight plate 25. are doing.

With the foil thread 3a in the standby state, the rapier 1 moves forward (travels to the left in FIG. 1), and the rapier fixed side grip part 27 passes through the thread end 3a' of the foil thread in the standby state. Then, the rapier 1 reaches its forward limit. At this time, the side surface 27a of the yarn gripping section 27, which corresponds to the upper side in FIG. 6, moves the portion of the yarn end 3a', which corresponds to the lower side in FIG. , and pass through the area by pushing it away.
When the rapier 1 moves forward, the presser foot 16 presses and restrains the foil thread 3a of the line 1 until it approaches or reaches its forward limit.

The rapier 1 switches from the forward limit to backward movement, and at the beginning of the backward movement, the thread gripping section 27 moves the thread end 3
When passing through point a', the thread end 3a'
7 and the thread gripping surface 1 in the vertical direction between the thread gripping body 19
a, the thread gripping body 19 is urged by the spring 24 and held under pressure. For this grip,
A part of the yarn end 3a' will be twisted by 90 degrees in the direction around the axis (clockwise or counterclockwise in FIG. 10), but if there is a space 29, the existence of the space 29 will cause The twisted portion other than the gripped portion does not come into contact with the upper surface of the thread gripping body 19 or the like.
After that, due to the double movement of rapier 1,
The foil yarn 3a is inserted into the weft. Prior to this, the presser foot 16 that was holding down the foil thread 3a is reset to release the pressing restraint on 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 motion progresses (however, the weight plate 25
5). Then, the weight plate 25
occupies a position above the sensor 26, the sensor 26 detects this, and based on this, the pinch delivery roller 6 is driven to send out the foil yarn 3a.
The amount of feed of the foil thread 3a of the roller 6 is equal to that of the rapier 1.
This is slightly less than the amount of foil yarn pulled out due to the retreat of the weft, so the foil yarn being inserted maintains a predetermined pull-out tension.

When the rapier 1 reaches the home position in the backward movement, the tip of the lever 190 that drives the rapier thread gripping body 19 collides with the hit 18, the thread gripping body 19 is released, and the rapier thread at the thread end 3a' is released. The grip by the grip body 19 is released.

The lever 190 for driving the thread gripping body 19 is a single lever type as shown in FIG. 6, more preferably a lever type as shown in FIG. 14, that is, a rear end surface (right end surface in FIG. 14). The first lever 19a has a steeply sloped inclined cam 19a' and extends from the thread gripping body 19. Contact surface 1 for opening 18
A type in which 9b' is a second lever 19b with a gentle slope is applied. In this latter type of lever, since the contact surface 19b' of the second lever 19b has a gentle slope, the shock of collision with the abutment 18 is small, and the thread is gripped by the steeply sloped inclined cam 19a' of the first lever 19a. The body 19 is suddenly opened to improve the timing accuracy of 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.

From the beginning of the advance of the rapier 1 until the weft insertion by the rapier 1 reaches an appropriate point, for example, a point slightly before the release of the rapier thread gripping body 19, the movable scissor blade holder 2b is held against the fixed blade 2c together with the movable blade 2a. Maintain the closed state, that is, the state outside the traveling path range of Rapier 1 (Fig. 7),
When this point is reached, the holder 2b moves the movable blade 2
It rotates in the counterclockwise direction in Figure 7 along with a, passes through the state shown in Figure 8 on the way, and is displaced to a position where it is open to the fixed blade 2c (Figure 9), and then reverses in the clockwise direction in Figure 9. With this reverse rotation, the movable blade 2a and the fixed blade 2c shear a predetermined portion of the yarn end 3a' of the foil yarn 3a.

The thread end 3 of the foil thread 3a is sheared at this predetermined location.
a' is applied to the lower edge of the finger portion 2b' of the holder 2b parallel to the movable blade 2a in the pre-rotation step of the rotation movement of the holder 2b to shear the movable blade 2a. As the holder 2b rotates, the yarn end 3a' adjacent to the front side of the clamp 9 (on the left side in FIG. Immediately after contact with the finger portion 2b', the following movable blade 2a rotates in the clockwise direction in FIG. 9 to finally cut the holder, and then the holder 2b continues to rotate in the clockwise direction in FIG. The lower edge of the finger portion 2b' pushes the yarn end portion 3a' in the portion that contacts the lower edge downward, so that the portion corresponding to the contact portion is substantially attached to the holder finger [strictly speaking, the holder finger It is held between the back surface of the portion 2b' and the front surface of the clamp 9.

The point in time when the movable blade 2a is rotated clockwise in FIG. 9 to cut the thread end 3a' may be set at a point slightly later than the time when the rapier thread gripper 19 releases its grip on the thread. . When cutting the yarn end 3a', the presser foot 16 again presses and restrains the foil yarn 3a at the constant yarn draw-out line l.

After the rapier 1 has finished retracting, the feed roller 6 continues to operate, thereby lowering the tension of the foil thread 3a after the roller 6, and the weight plate 25 is lowered (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 yarn delivery roller in a conventional rapier (or gripper) loom.

Hereafter, in the same way, for each reciprocating movement of rapier 1,
One weft insertion of the patterned foil yarn is performed, and cutting is performed at a predetermined location using the scissors 2, that is, at a location corresponding to the one weft insertion range, and the adjacent foil threads inserted and the pattern elements of the foil yarn are combined into a woven fabric. A pattern formed by parallel accumulation of pattern elements arranged in the warp direction is expressed on the fabric. The weft-inserted foil yarn 3b is interwoven with the warp W on the loom...the selvedge protruding from the parallel body is woven with the warp splicing yarn 33..., and is interwoven with the warp spliced thread 33 on the lower surface of the selvedge. 33'
intersect, that is, the ears rest on the warp splints 33'. Due to the interweaving 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, if the weft-inserted foil yarn with a pattern is not misaligned, the foil yarn 3a at the constant thread draw-out line 1 is also in the correct position without weft misalignment, and is on standby in preparation for being drawn out. Become,
The position marks 4, 4, 4 of the foil thread 3a of the line 1 occupy normal positions. In this case, the position marks 4, 4, 4 correspond to the corresponding mark sensors 8-1, 8-8.
-2, 8-3, and the drive machine 20 of 18 per unit does not operate. This operation control is regulated by the sequence control device 23.

If there is a weft shift in the weft insertion of the foil yarn 3a by the rapier 1, the position of the foil yarn 3a in the horizontal direction in FIG. There is a positional shift in the weft direction of the position marks 4, 4, 4 of the foil thread 3a.

Now, in the mark sensor arrangement format shown in Fig. 3, the foil thread 3a on line l has a weft shift of 0.4 to 1.2 mm to the right (or left) (small weft shift).
If so, mark sensor 8-1, 8
The mark sensor on the left side (or right side) of -1 detects [only the mark sensor on the left side (or right side) is at a relative position that is out of the corresponding position mark 4]. ], Based on this detection, the sequence control device controls the weft insertion foil yarn to occupy a position immediately corresponding to the normal weft insertion position next time in response to this small weft deviation. Under the control of 23, the drive machine 20 is rotated forward (or reverse) by a predetermined amount and then stopped. In the format shown in Figure 3, the foil yarn 3a of line l has a weft shift of 1.2 to 2 mm to the right (or left) (middle weft shift)
In this case, this is the left (or right) mark sensor 8-1, 8-1.
mark sensor and mark sensor 8-2, 8
-2, the left (or right) mark sensor detects [these two left (or right) mark sensors are the only relative positions that deviate from the corresponding position mark 4. ], based on this detection,
To deal with this weft misalignment, the next time the weft inserting foil yarn will be at the normal weft inserting position, the position will be set at 1.
Under the control of the sequence control device 23, the drive machine 20 is rotated forward (or reverse) by a predetermined amount and then stopped so that the weft 8 is occupied prior to the next weft insertion. In the format shown in Fig. 3, if the weft deviation of the foil yarn 3a of line l is 2 mm or more (large weft deviation) to the right (or left), this is detected by the mark sensors 8-1 and 8-1. Among them, the left (or right) mark sensor, and the left (or right) mark sensor of the mark sensors 8-2, 8-2,
Furthermore, the mark sensor 8-3 detects [these two left (or right) sides and the latter mark sensor are in a relative position that is out of the corresponding position mark 4. ], Based on this detection, under the control of the sequence control device 23, the driving machine 20 is put into a non-operating state, and the operation of the loom itself is stopped. If there is a large weft shift, the foil yarn 3a of the constant yarn pull-out line 1 may be manually returned to its normal position. At that time, the return to the normal position can be confirmed using an appropriate method, such as the mark sensor 8-1,
A pilot lamp (not shown) is connected to each of 8-1, 8-2, 8-2, and 8-3, and when the corresponding position mark 4 faces these mark sensors, the corresponding mark sensor is This can be done by watching the pilot lamp indicate that it is in the on state. If necessary, hit 18
The position may also be corrected manually, for example, by manually rotating the adjustment screw 22.

In the mark sensor arrangement format shown in Figure 4,
Latitude shift to the right (or left) is 0.4 to 1.2 mm
If so, mark sensor 8-1, 8-1
The left (or right) mark sensor among [8-3, 8-3 also serves] detects [the left (or right) mark sensor is the only related position that deviates from the corresponding position mark 4. ], 1.2~2
In the case of latitude shift to the right (or left) by mm, this is detected by the left (or right) mark sensor of the mark sensors 8-1, 8-1 and the mark sensor 8-2. Or the mark sensor on the right) side and the latter mark sensor,
The related position deviates from the corresponding position mark 4. ], a rightward (or leftward) latitude shift of 2 mm or more is detected by the right (or left) mark sensor of the mark sensors 8-3, 8-3 and the mark sensor 8-2 [ The mark sensor on the right (or left) side and the latter mark sensor are in a relative position away from the corresponding position mark 4. ], 0.4~1.2mm latitude deviation detection, 1.2~2mm
Based on the detection of latitude deviations, the drive machine 20 is rotated forward (or reversed) and stopped by a predetermined amount when necessary in the same manner as in the form of FIG. Based on the above latitude shift detection,
In the same manner as in the format shown in FIG.
0 is placed in a non-operating state, and the operation of the loom itself is stopped. In the format shown in FIG. 4, the position of the foil yarn 3a for a weft deviation of 2 mm or more (correction of the position of the hit 18, if necessary) can 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 as follows.
This is done after each weft insertion. The sequence control device 23 required for this purpose may be turned on and off by appropriate means, for example, by turning on and off a weft insertion detection sensor 36, which will be described later.

In this way, when the foil yarn 3a in the constant yarn draw-out line l has a small weft deviation or a medium weft deviation, the hit 18 is displaced to the required position with respect to the weft deviation, and the displacement of the hit 18 is As a result, the timing of the next collision of the rapier thread gripping body drive lever 190 against the corresponding thread 18, in other words, the timing of opening of the thread gripping body 19 is corrected to the timing corresponding to the above-mentioned weft deviation, so that the patterned foil yarn is normal. The material is regulated so that it is brought back to a suitable weft insertion position.

The mark sensor arrangement format is shown in Figure 3 and Figure 3-1.
In the figure, when the initially set operating amount of the drive machine 20 is changed during or after the installation of the device of the present invention, the “variable” to deal with it is set as the fourth variable.
Since the number of mark sensors is larger than that of the arrangement shown in FIG. 4-1, it is advantageous. Fourth
In the mark sensor arrangement format shown in Figure 4-1,
The structure is simpler than the former type because it has fewer mark sensors.

Before being cut by the scissors 2, the thread end 3a' is
As shown in FIG. 13, a portion is held between the holder finger portion 2b' and the clamp 9. At this point in time, the weft-inserted foil yarn is released from the grip 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 as it rotates remains unchanged.

On the other hand, if the position where the fixed blade 2c meets the movable blade 2a can be changed, by positioning the fixed blade 2c upward in FIG. 13, the time interval from the start of the clamping to the yarn cutting can be shortened. As I get older,
The amount of pullback of the foil yarn becomes smaller, and the amount of pullback increases when the foil thread is positioned downward. Therefore, if there is a weft misalignment in the 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 prior to cutting.

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, whether it is small, medium, or large,
and mark sensor 8 to indicate whether the direction is left or right.
-1, 8-2, and 8-3 are detected as described above. Then, based on this detection,
Under the control of the sequence control device 23, in the case of a small latitude shift, the desired side of the solenoids 40 and 41 is energized, and the lever 38 is moved from the neutral position to the desired left and right sides in FIG. Rotate until it touches the fixed blade 2.
c from the neutral position to the left and right in the same figure as required. In the middle latitude shift, sequence control device 2
Under the control of 3, first another solenoid 5
4 is energized to move the first stoppers 48, 48 out of the rotation path of the lever 38, and in this state, the desired side of the solenoids 40, 41 is energized, as shown in FIG. Move the lever 38 from the neutral position to the second stopper 49 in the required left and right directions.
, thereby displacing the fixed blade 2c from the neutral position in the required left and right directions in the figure. For large latitude shifts, the sequence controller 23
Solenoids 40, 41 and 5 under the control of
4 is left inactive.

In this way, when there is a weft misalignment, the weft inserted foil yarn is pulled back to the left in Figure 13 by adjusting the amount of pullback described above to the left in Fig. 13, and is cut immediately after weft insertion is completed. The position of the foil yarn itself at the front is corrected in accordance with the weft deviation.

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 foil thread insertion using Rapier 1,
The foil yarn with the yarn end waiting at a predetermined location should be cut with scissors 2.
The position of the part slightly upstream is fixedly regulated by the thread path 15, and a constant posture is maintained in a standby state.In this state, the weft is inserted while being gripped by the rapier 1, and during the weft insertion, The foil yarn is positioned in a fixed position relative to the shed in the front and back (up and down in FIG. 2) and vertical directions.

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 weft inserted in the normal direction, that is, facing up, the surface display mark 31 on the edge of the foil yarn 3b that has been inserted also occupies the normal front and back surfaces, and 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 on the edge of the weft-inserted foil thread 3b also does not face the reversed surface, in other words, does not face the surface display mark detection sensor 32. occupies the side surface, so that 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 in conjunction with the weft inserting detection at a predetermined time by the weft inserting detection sensor 36, detects the surface of the weft inserting foil yarn 3b. Controls back detection. Detection of front and back reversal of the weft insertion foil yarn can be confirmed by activating an alarm such as a buzzer or lamp based on the non-operation of the surface display mark detection sensor 32 and the activation of the weft insertion detection sensor 36. If necessary, the foil yarn weft insertion system of the loom may be stopped by an appropriate means when front and back reverse weft insertion of the foil yarn occurs.

[Brief explanation of drawings]

Fig. 1 is a front view schematically showing the standby state of the foil thread in an embodiment of the present invention together with a rapier;
The figure is a schematic plan view of the main parts of a loom in an embodiment of the present invention, FIG. 3 is a perspective view showing an example of the arrangement format of position mark sensors, and FIG. 3-1 is a mark sensor arrangement in the format shown in FIG. 3. FIG. 4 is a perspective view showing another example of the arrangement of position mark sensors, and FIG. 4-1 is a diagram showing the relationship of each mark sensor in the mark sensor arrangement shown in FIG. 4. 5 is an enlarged exploded perspective view of the scissors in the same embodiment, FIG. 6 is an enlarged plan view of the rapier tip and the rapier thread grip opening abutment in the same embodiment, and FIGS. 7 to 9
The figures up to the figure are explanatory diagrams showing the operating state of the movable scissor 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 elevational 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 yarn in the weft direction, No. 1
FIG. 4 is a plan view showing a modified example of the lever for driving the rapier thread gripper. 1... Rapier, 2... Scissors, 2a... Scissors movable blade, 2b... Scissors movable blade holder, 2b'... Scissors movable blade holder finger part, 2c... Scissors fixed blade, 3... With pattern element Long roll of foil yarn, 3a
...Foil yarn pulled out from the winding material, 3a'...End of the thread, 3b...Foil thread inserted into the weft, 4...Position mark, l...Constant thread pull-out line, 6...Pinch Delivery roller, 7... Thread path, 8-1, 8-
2, 8-3... Position mark sensor, 9... Clamp, 15... Thread guide, 16... Presser foot, 18... Rapier thread gripper opening hit, 19... Rapier thread grip, 190... Rapier Lever for driving the thread gripper, 19a...first lever, 19b...
Second lever, 20...driver for hitting, 3
1...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.

Claims (1)

[Scope of Claims] 1. At least three position marks are made at regular intervals at predetermined positions corresponding to the edges of the fabric in each foil insertion area. This is a loom for inserting foil thread into a foil thread, in which the long roll of foil thread is placed in a fixed position, the foil thread is inserted into the foil thread using a rapier or a gripper shuttle, and the foil thread filled with foil is placed in a fixed position. In a loom for weaving a foil fabric that is cut with scissors, the foil yarn drawn out from the long roll of foil yarn is spread in a certain space by at least an amount equivalent to one foil insertion range on the shed side. is an extending yarn drawing line, and a plurality of mark sensors for detecting the position marks of the foil yarn on the constant yarn drawing line are arranged side by side along the line,
The foil yarn in the line is restrained at the constant yarn withdrawal line when the rapier or gripper shuttle is at rest and when the rapier or gripper shuttle moves forward until it approaches or reaches the forward limit in the forward movement, and A presser foot is disposed that releases the restraint when the forward limit is approached or reached, and continues the release during the weft insertion movement of the rapier or gripper shuttle, and is placed at a fixed position on the return travel path of the rapier or gripper shuttle. The lever for driving the thread gripping body of the rapier or gripper shuttle is collided with the lever to displace the thread gripping body in the weft direction of the fabric. A drive is coupled to the drive which is actuated on the basis of weft deviation detection of the foil yarn position marks, the mark sensor being arranged at least one for each of the position marks and detecting the small weft of the foil yarn in the constant yarn withdrawal line. It includes an arrangement corresponding to detecting a deviation, an arrangement corresponding to detecting an intermediate latitude deviation, and an arrangement corresponding to detecting a large latitude 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, and the scissors are equipped with mechanically driven movable blades. and a fixed blade whose position relative to the movable blade can be changed in the foil yarn transverse direction, and the scissors are moved in a predetermined direction shortly before cutting the foil yarn that has been inserted and released from gripping. The scissors fixed blade has fingers that bend a part of the foil thread into the shape of a hook and hold it between a clamp at a fixed position, and the mark sensor has a finger that holds the foil thread between the fixed blade and the mark sensor. Adding a position adjustment means for displacing the fixed scissor blade to a predetermined position so as to regulate the amount of pulling back of the foil thread by the above-mentioned clamping in accordance with the detection of the weft deviation in the middle, The driving machine drives forward or backward to displace the hit by a predetermined amount to a desired side in the weft direction of the fabric according to the weft deviation of the foil yarn in the constant yarn drawing line, and stops, and is in an inactive state. 1. An automatic position regulating device for inserting patterned foil threads in a loom, characterized in that 2. The lever for driving the thread gripping body of the rapier or gripper shuttle is an inclined cam with a steeply sloped rear end surface, and the first lever extends from the thread gripping body, and the lever is attached to the rapier or gripper shuttle and the tip is tilted. 2. The automatic position regulating device for inserting patterned foil yarn in a loom according to claim 1, further comprising a second lever having a gently sloped contact surface for contacting the pattern cam and opening the yarn gripping body.