JPH0441748A - Warp repairing system - Google Patents

Abstract

PURPOSE:To accomplish the accurate positioning for the title system by regulating the position of the threading device, based on the position for detecting specific warp, by a yarn sensor integrated with a threading device and the positional relationship for the dents each corresponding to a broken warp and the specific warp. CONSTITUTION:When warp breakage occurs during weaving, a normal warp 1 in a specified relation to said warp broken (e.g. left adjacent thereto) is vertically moved between a heald and a reed 6 through a pickup member, and a yarn sensor 22 integrated with a threading device 31 is moved from the waiting position along the weaving width direction to detect the warp 1. And using the result of determination, in a determination circuit, of the positional relationship for the dents each corresponding to the warp broken and the warp 1 from the number of a heald frame or the identification code of a fallen dropper, the threading device 31 is moved by the deviation from said device to effect regulation, thus accurately positioning for the dent corresponding to said warp broken.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for repairing the cut warp threads when the warp threads are broken during weaving and setting the loom in a state where it can be restarted.

[Prior art]

In repair work associated with cutting warp threads, the reed feathers corresponding to the cut warp threads must be identified. The applicant for the patent has proposed a method for detecting the position of the reed feathers based on the invention of Japanese Patent Application No. 2-80227.

The reed blade position detection method involves displacing a normal warp yarn in a specific position 1 relationship corresponding to the cut warp yarn, for example, the left adjacent warp yarn, in the vertical direction, and detecting the normal warp yarn in this displaced state near the reed blade. The position of the reed feather corresponding to the cut warp yarn is specified by

Thereby, the position of the reed feather corresponding to the cut warp yarn can be accurately detected as the distance from the reference position on the weave end side. Therefore, in the subsequent threading process, the feed guide device moves the threading device based on the distance from the reference position on the weave end side to the position of the reed feather corresponding to the cut warp yarn, and moves the threading needle between the cut warp yarns and the threading needle. Facing the corresponding Kotohama.

[Issues with prior art]

However, according to the above technology, the feeding unit for measuring the distance from the reference position on the weaving edge side to the reed feather corresponding to the cut warp yarns, and the feeding guide of the threading device from the same reference position to the detected reed position. Since the system feed unit is configured as a separate feed unit, if an error occurs between these feed units, an error will occur between the reed blade corresponding to the cut warp thread and the threading device after positioning. This occurs and the threading operation becomes impossible.

[Purpose of the invention]

Therefore, an object of the present invention is to eliminate the error between the detected position between the reed blades corresponding to the cut warp threads and the positioning of the threading device based on this detected position, so that the threading operation after positioning can be performed without any trouble. It is to do so.

[Means for Solving the Invention] Therefore, in the process of using a thread sensor to detect normal warp threads in a specific positional relationship with respect to the cut warp threads, the present invention provides a means for feeding the thread sensor in the weaving width direction and a threading device. The feeding and moving means are constituted by the same feeding unit, and the threading device is integrally attached to the feeding portion of the thread sensor.

[Action of the invention]

In the process of detecting the reed feathers corresponding to the cut warp yarns, a specific positional relationship is set with respect to the cut warp yarns, for example, a state in which the normal warp yarn adjacent to the left is displaced in the vertical direction.

Thereafter, the yarn sensor is moved in the weaving width direction along the reed from the standby position on the weaving end side by the feed moving means, and detects a normal warp yarn in a displaced state. At this time, the threading device is also moving together with the thread sensor.

Therefore, when the yarn sensor detects a normal warp yarn in a displaced state, the threading device detects the 0 judgment circuit located near the reed feather corresponding to the cut warp yarn and the reed feather corresponding to the cut warp yarn in the displacement state. The positional relationship between the reed feathers corresponding to the normal warp yarns is determined from the number of the heald frame corresponding to the cut warp yarns or the identification code attached to the fallen warp yarn, and the yarn sensor and yarn The amount of deviation between the threading device and the reed feather corresponding to the cut warp yarn is determined from the amount of deviation with the threading device and the above determination result. After the thread sensor detects a normal warp yarn in a displaced state, the threading device is moved in the forward or backward direction by an amount corresponding to the amount of displacement, so that the threading device can reduce the amount of feed. /I
This results in accurate positioning between the reed feathers corresponding to the cut warp threads.

In this way, since the thread sensor and the threading device are attached to the same feed moving means, there is no error between the detection position of a specific warp thread by the thread sensor and the positioning position of the threading device, and the positioning Malfunctions due to errors are eliminated.

〔Example〕

1 to 10 show the reed blade position detection process.

As shown in FIG. 1, when, for example, one warp thread 1 breaks among a large number of warp threads l during weaving, the corresponding dropper 3
As the warp yarns 1a,
The cutting state of the loom is detected, a vertical stopping signal is generated, and the loom is automatically stopped at a predetermined stopping angle. When repairing the cut warp yarns 1a and 1b thereafter, all the heald frames 4 are set to approximately the same level by a leveling device (not shown). Therefore, all warp threads 1 are in a closed state. The warp threads 1 are in the form of a sheet, and are threaded through the healds 5 of, for example, four heald frames 4 in a predetermined repeating order.
The threads are threaded one by one, interlaced with the weft threads 7 at the weaving front 81, and the woven fabric 8
It becomes. In this way, the two warp threads 1 inserted between the two reeds 6 always have a certain relationship with respect to the numbers of the heald frames 4 that support the warp threads 1. It turns out.

Next, a separation device (not shown) is used, for example, in Japanese Patent Application Laid-Open No. 62-69
The cut warp yarns 1a are cut by moving the dropped dropper 3 back and forth in the weaving width direction using the device disclosed in Japanese Patent Publication No. 851, or by twisting the dropped dropper 3 using the device disclosed in JP-A-63-28951. , lb is cut and separated in the direction away from the warp yarns 1a and 1b.

After that, as shown in FIG. 2, a pair of separation members 11 are inserted from below into a small space of the separated warp yarns 1 in the vicinity of the warp fixing device 2, and are directed away from the cut warp yarns 1a and lb, respectively. to move in the weaving width direction. Thereafter, the separation member 11 is moved to the vicinity of the heald frame 4 while being inserted into the space. As a result, the cut warp yarns 1a and 1b are set in a state where they can be easily taken out while forming a sufficient distance from other normal warp yarns 1.

Note that this pair of separating members 11 is disclosed in Japanese Patent Application Laid-open No. 1-1928.
53, and is moved in the weaving width direction by a heddle, etc., raised by a vertical air cylinder, etc., and driven in the direction of separating the warp yarns 1 by an air cylinder, etc. in the weaving width direction. It has become. After that, as described in Japanese Patent Application No. 1-24673, a joining thread 9 is added to the cut warp thread 1a on the sending side.
is spliced by adhesive or mechanical knocking, and the tip of the splicing thread 9 is held by a splicing thread holder 10 and a clamp holder or suction holder 14 near the distance between the cut warp threads 1b and the corresponding reed feathers 6.

Next, the number of the heald frame 4 corresponding to the cut warp yarns 1a, 1b is detected by a method described later, and a judgment circuit 3, which will be described later,
Based on the numbers rll&llJ of the heddle frame 4 corresponding to the cut warp yarns 1a and 1b for which 7 was detected and the above-mentioned threading order, the reed feather 6 corresponding to the adjacent warp yarn 1 on the left, for example, is determined based on the cut warp yarns 1a and 1b as a reference. It is determined and stored as a predetermined condition that the reed is positioned to the left by one reed feather pift with respect to the reed feather 6 corresponding to the cut warp yarns 1a and lb. Furthermore, based on the cut warp yarns 1a and 1b, for example, the left adjacent 2
It is determined that the number of the heddle frame 4 with respect to the warp yarn 1 with the wood grain is "diagonal 3", and the separation member 12 in the standby position is moved in the weaving width direction based on the position signal of the dropper 3 in the falling state, and the cut warp yarn 1a is moved. , 1b, move it forward in the direction of the warp thread l, move it to the position of the heald frame 4 of "floor 3" as shown in FIG. to regulate the movement of After this, the left separation member 11 moves to the center, so the cut warp yarns 1a,
Only the normal warp yarn 1 that has a predetermined positional relationship with respect to 1b, that is, the one adjacent to the left, moves close to the cut warp yarns 1a and 1b.

Next, the extraction member 13 moves from the standby position in the weaving width direction along between the heald frame 4 and the reed feathers 6, and cuts the warp yarns 1a,
By stopping at a position directly below the warp thread 1 adjacent to the left of 1b and rising there, the corresponding warp thread 1 is guided by the hook portion 131 to a position higher than the height of other normal warp threads 1.

At this time, the warp yarn 1 adjacent to the left is guided only in the vertical direction along the interval between the reed feathers 6, and is displaced upward as shown in FIG. 4 due to the difference in height from the other normal warp yarns 1. It is set in a state where it can be identified. Moreover, since the normal warp yarns 1 are regulated between the reed feathers 6, at least in the vicinity of the reed feathers 6, the position of the rising warp yarns 1 in the weaving width direction is
This precisely matches the position of the corresponding reed feather 6 in the weaving width direction.

During this time, the pair of separating members 11 move toward each other as shown in FIG. 5, thereby returning all the normal warp threads 1 to a substantially parallel state.

Thereafter, as shown in FIGS. 4 and 5, the yarn sensor 22 detects the rising warp yarns 1 in the process of moving from the standby position in the weaving width direction, for example near the front surface of the reed feathers 6,
The position of the yarn sensor 22 in the weaving width direction at the time of detection is detected as the position of the warp yarn 1.

Then, based on this detected position and the predetermined conditions,
The position adjacent to the right by one reed pift is determined, and that position is determined to be the reed position corresponding to the cut warp yarns 1a, lb. As shown in FIG. 6, after moving the one separating member 11 again, the cut warp yarns 1a and 1b are determined based on the determined result and the amount of deviation of the threading device 31 with respect to the yarn sensor 22 in the weaving width direction. The amount of movement to the corresponding reed feather 6 is determined, and based on the determination result, the threading device 31 together with the thread sensor 22 is moved to the distance between the cut warp yarns 1a, 1b and the corresponding reed feather 6. Here, the threading device 31 is the sixth
As shown in the figure and FIG. 7, the hooked needle 32 is passed between the two reed feathers 6 through which the cut warp yarns 1a and 1b are to be passed, and while being inserted into the mail of the corresponding heald 5, the connecting yarn holder 10 is inserted. By hooking the splicing thread 9 between the suction holder 14 and retreating, the splicing thread 9 is pulled through between the mail of the corresponding heald 5 and the two reed feathers 6.

As shown in FIG. 8, the splicing yarn 9 after being pulled through is cut by the cutter 34 near the splicing yarn holder 10, and then held at a position above the fabric front 81 by the suction air flow of the suction tube 33. be done. Note that this joining thread 9 is the same as the cut warp thread 1.
Although it is not tied to b, it may be tied.

Thereafter, the pair of separation members 11, 12, and extraction members 13 descend and return to their original standby positions. For this reason, the normal warp yarn 1 and the warp yarns 1a and 1 after repair.
b and splicing thread 9, as shown in Figs. 9 and 10.
They become parallel on the same plane and are in an aligned state that allows for weaving.

By the start of weaving after this, the joining yarns 9 are woven into the woven fabric 8 (therefore, the cut warp yarns 1a on the sending side are
During weaving, in which the splicing yarn 9 is woven into the woven fabric 8, the suction tube 33 remains in a fixed position while continuing the suction operation, or moves to the winding side as the weaving progresses, for a predetermined period of time. It returns to the retracted position after the lapse of time or after a predetermined horizontal insertion of the pick. Note that the portion of the woven fabric 8 where the end of the splicing thread 9 exists is usually treated as a defect.

For example, the following detection device 100 is used to detect the heald frame 40 numbers corresponding to the cut warp yarns 1a and lb. That is, the detection device 100 includes the first
As shown in FIG. 2, it is supported movably in the weaving width direction by an endless heald 102 wound between a pair of pulleys 101 driven by a drive motor (not shown), and is movable in the weaving width direction. The rack 105 is slidably held by the guide 103 of the rack. This rack 105 is movable in the direction of the warp yarn 1 by a pinion 106 of a motor 104, and has a holder 107 at its tip.
At the upper end part, two sensors 108 and 109
oriented horizontally and downward. One horizontal sensor 108 is for detecting the heald 5 of the heald frame 4, and the downward sensor 109 is for detecting the heald 5 of the heald frame 4.
It is provided to specify one of the plurality of held frames 4. In the case of this embodiment, the four heald frames 4 are
As illustrated in FIG. 13, they are arranged in the direction of the warp threads 1, and by supporting the four warp threads 1 one by one in a diagonal state, and repeating this supporting mode, all the warp threads 1 is held. These warp threads 1
are each supported by a heald 5 and passed between the reed feathers 6, two at a time. Therefore, the two warp yarns 1 inserted between the two reed feathers 6 have a certain relationship with respect to the numbers of the heald frames 4 that support the warp yarns 1.

Each member through which the warp threads 1 are inserted, for example, the heald 5, is given a unique identification code 45 corresponding to the number of the heald frame 4 that supports it. This identification code 45 indicates the warp threads 1 inserted between the same reed feathers 6.
The information is stored in the storage device 41 constituting the judgment circuit 37 for each case.

When detecting the frame number, the detection device 100 moves forward in the direction of the cut warp yarns 1a, moves by a predetermined amount of movement, and then stops. Next, the motor 104 is turned on and rotates in the forward direction, so that both the sensors 108 and 109 move forward toward the heald 5. During this forward movement, when the sensor 109 is turned on, it is detected that the vehicle has approached the first heald frame 4, so a count is started to detect the amount of rotation of the motor 104. Thereafter, when the sensor 108 is turned on, it means that the heald 5 has been detected, the counting is stopped, and the frame number of the heald frame 4 is calculated from the counted rotation amount. This run 1 is performed by a dedicated controller or the like.

For example, if the amount of rotation of the motor 104 necessary to move one heald frame 4 is stored in advance, and the number of times the amount of rotation of the motor 104 counted is the number of times the amount of rotation recorded above is calculated. Desired. As a result, the cut warp yarn 1a
, 1b is inserted.Next, the controller cuts the warp threads 1a and 1b to the left of the warp threads 1a and 1b, based on the contents of the memory 41 and the obtained identification code 45. 1 is the cut warp yarn 1a, l
It is determined whether it passes between the same reed blades 6 as in b or between the adjacent reed blades 6, and from this, the predetermined conditions are set, and then the motor 104 is turned on in the reverse direction, and the sensors 10B, 109 is moved backward, and if necessary, a drive motor (not shown) is turned on to shift only the detection device 100 in the weaving width direction.

Next, as shown in FIG. 14, the separating member 12 is moved together with the guide 16 by the movement of the endless heald 15 in the weaving width direction, and is further moved by the rack 17 which also serves as a slider and the pinion 181 of the motor 18. , moves in the direction of the warp yarns 1, advances in the weaving width direction by an air cylinder 19 supported by a bracket 171 integrated with the rack 17, and restricts only the corresponding heald 5.

Further, as shown in FIG. 15, the extraction member 3 is movable in the weaving width direction by a heald 20, and is supported by an upward solenoid 21 so that it can be raised by a predetermined amount.

Furthermore, as shown in FIG. 16, the thread sensor 22
It is attached to the tip of a plate holder 28 which is prevented from rotating by a guide bar 27 relative to the tip of the piston rod 26 of the cylinder 25 . The cylinder 25 serves as a feeding means for a guide bar 23 in the weaving width direction.
By means of a feed screw 24 and a slider 29 which also serves as a feed nand, it can be moved in the weaving width direction by a motor 30. Therefore, the cut warp threads 1a, I
The position between the reed feathers 6 corresponding to b is the position at the time when the rising warp yarn 1 is detected by the yarn sensor 22, the position between the reed feather 6 corresponding to the rising warp yarn l and the cut warp yarn 1a, 1b
It can be determined from the positional relationship with the reed feathers 6 corresponding to.

The threading device 31 is attached to the slider 29 which also serves as a feeding nand by a bracket 35. As a result, the thread sensor 22 moves in the weaving width direction together with the threading device 31.

Note that the feeding means is not a feeding screw type, but as shown in FIG.
5 or the like.

Feed control during this movement is performed by a control circuit 36 shown in FIG.

After the normal warp yarn l is displaced in the vertical direction, the warp unrepaired control device 51 generates an operation command, puts the flip-flop 46 in the center state via the OR gate 43 inside the control circuit 36, and the relay 50 closes the contact point. 47 to the on state. This causes the drive amplifier 48 to drive the feed motor 3 at the speed set by the speed setter 42.
0 to move the thread sensor 22 and threading device 31 from the standby position on the weave end side in the weaving width direction.

During this movement, when the yarn sensor 22 detects the normal warp yarn 1 in the displaced state, it generates a detection signal and sets the flip-flop 46 to the reset state via the OR gate 44. This causes the motor 30 to stop, so
The yarn sensor 22 automatically stops at a position facing the normal warp yarn 1 in a displaced state.

The detection signal of the thread sensor 22 is simultaneously input to the arithmetic unit 39. The calculator 39 calculates the cut warp yarn based on the positional relationship between the reed feathers 6 corresponding to the cut warp yarns 1a and 1b and the reed feather 6 corresponding to the displaced warp yarn 1, and the amount of deviation between the yarn sensor 22 and the hooked needle 32. The amount of deviation between the reed feather 6 and the hooked needle 32 corresponding to 1a and 1h is calculated. For example, when the thread sensor 22 is disposed ahead of the hooked needle 32 of the threading device 31 by one reed bift as shown in FIG. 19A, the thread sensor 22 is displaced. At the time when a normal warp yarn 1 is detected, the hooked needle 32 is exactly opposite to the interval between the cut warp yarns 1a, 1b and the corresponding reed feathers 6. The arithmetic unit 39 is the judgment circuit 3
Information on the positional relationship from 7, that is, cut warp yarns 1a, 1
Input the data that the reed blade 6 corresponding to b is located one reed blade pinch to the right of the reed blade 6 corresponding to the warp 1 in the displaced state, and use this input data, the thread sensor 22, and the threading device 31. From the amount of deviation, it is determined that the hooked needle 32 is facing between the reed feathers 6 corresponding to the cut warp yarns 1a and 1b. As a result, the computing unit 39 outputs an operation command to the warp unrepaired control device 51 and causes the threading device 31 to operate.

However, the thread sensor 22 and the hooked needle 32
As shown in FIG. 9B, when the two reed pitches are offset, for example, the computing unit 39 calculates the amount of deviation, that is, the two reed pitch, and the information on the positional relationship input from the determination circuit 37. From this, it is determined that the hooked needle 32 is deviated to the right by one reed pitch between the cut warp yarns 1a and lb and the corresponding reed pitch 6, and the pitch setting device 40 determines that the hooked needle 32 is shifted to the right by one reed pitch between the cut warp threads 1a and lb and the corresponding reed pitch. After inputting the data, the flip-flop 46 is set again, and the motor 30 is rotated by one reed bift in the feeding direction.

Here, the judgment device 38 inside the judgment circuit 37 inputs the information of the heald frame number corresponding to the cut warp yarns 1a, 1b, and based on the stored contents from the storage device 41, determines the information corresponding to the cut warp yarns 1a, 1b. Reed feathers 6 and cut warp threads 1a, lb
A memory device 41 that determines the positional relationship between the normal warp threads 1 and the corresponding reed feathers 6 in a predetermined positional relationship, and sends the determination result to the arithmetic unit 39 of the control circuit 36 as positional relationship information. The specific relationship with the normal warp yarn 1 that is displaced in accordance with the cut warp yarns 1a and lb, that is, in this example, the warp yarn adjacent to the left of the cut warp yarns 1a and 1b is displaced, and the heald frame for every 6 reeds. The threading order data regarding the number has been input.

The computing unit 39 rotates the motor 30 in the feeding direction by turning the flip-flop 46, and
The value (one reed pitch) set in the pinch setter 40 as the deviation amount for one reed pitch is set in the thinning counter 52 as a preset value. The feed speed at this time is set to a low speed. When the count value of the reduction counter 52 becomes "0" due to the pulse from the encoder 49, the arithmetic unit 39 receives this and outputs the flip-flop 46.
is reset, the motor 30 is stopped, an operation command is output, and the vertical unrepaired control device 51 is operated. Here, the warp unrepaired control device 51 operates the threading device 31 based on the threading operation order.

In addition, when one warp thread 1 is passed between each reed thread 6, the judgment device 38 inside the judgment circuit 37 determines whether the reed thread 6 corresponding to the cut warp threads 1a, 1b and the warp thread in the displaced state are detected. 1
The determination is made only from the predetermined positional relationship between the cut warp yarns 1a, 1b and the warp yarn 1 in the displaced state, without determining the positional relationship with the reed feathers 6 corresponding to the above.

The embodiments shown in FIGS. 20 and 21 are examples in which the separating member 12 is not used.

As shown in FIG. 20, the normal warp yarns 1 are cut by a pair of separating members 11, as in the previous embodiment.
The cut warp yarns 1a, which are separated from 1b and are on the sending side, are tied to the joining threads 9 to hold the free ends of the joining threads 9. After this, the extraction member 13 moves close to the adjacent warp threads l. The amount of movement for this purpose is determined using a sensor that detects the position of the dropper 3 in the falling state or a location where the spacing between the warps 1 is large.

Thereafter, as shown in FIG. 20, the separating member 11 descends to return the normal warp threads 1 to a parallel state. At this time, the two normal warp yarns 1 adjacent to the left side of the cut warp yarn 1a are located above the extraction member work 3. Here, as the extracting member 13 rises, the two normal warp yarns 1 rise onto the hook part 131 next to the cut warp yarns 1a and 1b, and are distinguished from other warp yarns 1 by the yarn sensor 22. It is set at a high position so that it can be Then, the yarn sensor 22 detects the right warp yarn 1 among the two normal warp yarns 1 that are rising. after this,
Threading of the connecting thread 9 is performed in the same process as in the embodiment described above.

In any of the embodiments, the warp yarns 1 to be displaced in the vertical direction only need to have a predetermined positional relationship with respect to the cut warp yarns 1a and 1b, and the warp yarns 1 on either the left or right side
In addition, it may be a predetermined number of adjacent warp threads 1 to the left or right from the cut warp threads 1a, 1b. For example, the predetermined condition can be determined at the time when the number of the heald frame 4 corresponding to the cut warp yarns 1a, 1b is detected. As described above, this predetermined condition is determined by detecting the number of the heald frame 4 corresponding to the cut warp yarns 1a and lb,
Determine from the order of passing through the reed feathers, or use JP-A-1-1
As described in Japanese Patent No. 74649, if all the droppers 3 of the dropper device 2 are coded and all the codes are stored in correspondence with each reed blade, the code of the dropper 3 in the state where the cut warp yarns 1a and 1b are falling can be stored. It can also be determined from

Note that the method for detecting the number of the heald frame 4 is not limited to the above-mentioned embodiment, and for example, a known warp-holding device that detects the falling of the heald 5 and the breakage of the warp threads 1 may be applied to detect the falling of the heald frame 4. The frame number of the held heald 5 may be detected.

〔Effect of the invention〕

In the present invention, since the feeding means of the sensor and the feeding means of the threading device are combined, these feeding means can be simplified, and the feeding amount of the thread sensor is also the feeding amount of the threading device. After the thread sensor detects a particular warp thread, the threading device does not need to feed or only needs a small feed amount, so the positioning of the threading device corresponding to the reeds of the cut warp threads is accurate, and compared to conventional threading devices. Positioning errors such as those described above do not occur, and therefore positioning operations can be performed reliably.

[Brief explanation of drawings]

Figures 1 to 10 are explanatory diagrams of the reed blade position detection process, Figures 11 to 13 are explanatory diagrams of the heald frame number detection part, and Figures 14 to 17 are slope views of the mechanical drive part. , FIG. 18 is a block diagram of the control portion, FIG. 19 is an explanatory diagram of predetermined positional relationships, and FIGS. 20 and 21 are explanatory diagrams of other embodiments. 1... Warp thread, 1a, 1b... Cutting warp thread, 2... Dropper device, 3... Dropper, 4... Heald frame, 5... Heald, 6... Reed feather, 7... Weft thread, 11.12. - Separation member, 13... Extraction member, 22... Thread sensor, 30...
Motor, 31... Threading device, 32... Needle with hook. Fig. 7 Fig. 2 Fig. 3 Fig. 4 Fig. Fig. θ Fig. 7 Fig. 76 Fig. 2 Fig. 77 Fig. 79 (A) Figure 7 Figure 27

Claims (1)

[Claims] A threading device that is movable in the weaving width direction and passes splicing yarn between the reeds to repair cut warp yarns, a thread sensor that is provided integrally with the threading device, and A picking member that takes out normal warp yarns having a positional relationship between the heald and the reed and displaces them in a vertical direction relative to other warp yarns, and a reed feather corresponding to the cut warp yarns and a reed feather corresponding to the normal warp yarns. A determination circuit that determines the positional relationship of A warp repair device comprising: a control circuit that specifies a reed blade position and operates the threading device at the determined reed blade position.