JPH0418152A - Device of determining position for threading of weaving machine - Google Patents

Abstract

PURPOSE:To surely determine positioning between a threading means and a threading hole of heald by equipping a feed guiding device to set the threading means and a heald frame corresponding to cut warp in a specific position relation. CONSTITUTION:An threading device 2 is equipped with a threading means 7 and a standard part 13 in given position relation, position of cut warp in the weaving width direction is discovered by a detector 3, a heald frame corresponding to the cut warp is distinguished by an identification device 4, the threading device 2 is dislocated from waiting position by a feed guiding device 5 and the heald frame corresponding to the cut warp and the standard part 13 are set in specific position relation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a device for passing splicing yarns through the healds of a corresponding heddle frame when cutting warp yarns, and in particular, the threading means and the healds corresponding to the cut warp yarns. The present invention relates to a device for relatively positioning the threading hole of the present invention.

[Conventional technology]

When the warp threads break during weaving, when repairing the warp threads,
It is necessary to thread the piecing threads through the threading holes in the heald that correspond to the cut warp threads. During this threading operation, it is necessary to identify the heald frame corresponding to the cut warp threads, and it is also necessary to position the threading means relative to the threading hole of the heddle in the heald frame. Become.

Conventionally, such positioning involves positioning the threading means and the threading hole of the heddle by stopping the heald frame at a predetermined opening position and moving the threading means by a preset amount of movement. .

[Problems with conventional technology]

However, there was an error in the stopping position of the heald frame itself.
Furthermore, the positioning accuracy is poor because the stopping positions differ between the plurality of heald frames due to the difference in opening amount. Additionally, if the warp line or opening amount settings are changed, the amount of movement of the threading means must also be changed, making the operation complicated.
Furthermore, if the warp line and shedding amount differ from loom to loom, the threading means cannot be used for multiple looms because positioning errors occur in the vertical direction with a certain amount of movement.

[Purpose of the invention]

Therefore, an object of the present invention is to accurately position the threading means and the threading holes of the heddle by directly setting the threading means and the heald frame corresponding to the cut warp threads in a specific positional relationship. , to make it possible to use various types of looms in common.

[Means for solving the invention]

Therefore, in the present invention, a reference part is provided on the threading device side in a predetermined positional relationship with the threading means, and this reference part is brought into direct contact with a part of the heald frame corresponding to the cut warp threads.
By facing each other at a certain distance and setting them at a relatively specific position, the threading means is accurately positioned with respect to the threading hole of the heddle.

When the warp threads are cut during weaving, the detector detects the position of the cut warp threads in the weaving width direction by cutting out the dropped dropper. At the same time, the identifier identifies the corresponding heald frame from the identification code of the dropped dropper, for example.

Based on these, the feed guide device moves the threading device from the standby position in the weaving width direction to guide it to the position of the cut warp yarn and the heald frame position corresponding to the cut warp yarn, and then attaches the reference part to the cut warp yarn. by setting it in a particular position relative to the corresponding held frame, or
The leveling device relatively displaces the heald frame corresponding to the cut warp threads and the other heald frames, and the heald frame and the reference part are moved relatively closer together by the heald frame corresponding to the cut warp threads and the reference part. By setting them in a specific positional relationship, the threading means and the threading hole of the heddle to be threaded are accurately positioned. Next to this,
The threading device threads the new joining thread through the heald Q threading hole by a known threading means, such as an air current threading means or a needle threading means. After this, or before the threading takes place, the new joining thread is connected to the cut warp thread on the delivery side. Thereafter, the other end is connected to the cut warp yarns on the winding side, or passed through a reed, and is woven into the fabric by restarting weaving while being held at the front.

In the following examples, in Example 1, the threading device is lowered without displacing the heald frame of the shedding device, and its reference part is applied to the upper part of the heald frame corresponding to the cut warp threads, thereby lowering the heald frame of the shedding device. This is an example in which the threading hole of the heald of the frame and the threading means of the threading device are relatively positioned, and in Examples 2 and 3, the threading device is moved to a predetermined operating position. After that, the heald frame corresponding to the cut warp threads is displaced by a cam-type shedding drive mechanism,
This is an example in which the threading hole of the heddle of the heald frame and the threading means are relatively positioned by directly touching the reference part or by using a reference sensor or the like so as to be at a constant distance from the reference part. In Embodiment 4, after the threading device is moved to a predetermined operating position, the heald frame is displaced by the dobby type opening drive mechanism, and then the reference portion of the threading device is lowered. This is an example in which the threading hole of the heald of the heald frame and the threading means of the threading device are relatively positioned by applying the needle to the upper part of the heald frame corresponding to the cut warp yarn after the displacement.

[Embodiment 1 (FIGS. 1 and 2)] FIG. 1 shows the configuration of a threading positioning device 1 for a loom according to a first embodiment.

This threading positioning device 1 is based on a threading device 2 and is assembled with a detector 3, a discriminator 4, and a feed guide device 5.

In this embodiment, the threading device 2 includes a needle 71 as a threading means 7 in a frame 6, which can be moved forward and backward by an operating means 72 such as an air cylinder, and above the plurality of heald frames 8. Reference piece 13 as reference part 13
1.

The large number of warp threads 9 are formed into a sheet and are passed through, for example, four rows of droppers 12 of the warp fixing device 11 one by one.
It reaches the weaving front through the threading hole 82, intertwines with the weft thread 14, and becomes the cloth 15.

If one of the many warp threads 9 breaks during weaving,
The corresponding dropper 12 falls. Therefore, the warp stopping device 11 sends a warp stopping signal to the loom control device 17, so that the loom control device 17 automatically stops the loom at a predetermined stopping angle and then instructs the sequence control unit 16 to operate. send in.

At this point, the separation device 30 described in Japanese Patent Application No. 2-37801, as shown in FIG. Twist the dropped dropper 12 by about 90' and twist the other warp yarns 9 adjacent to the cut warp yarns 9a and 9b to the dropper 1.
The cut warp yarns 9a, 9b are separated from each other through the cut warp yarns 9a, 9b, and a pair of separation members 28 are inserted into the space.
The cut warp yarns 9a, 9b are separated from the other normal warp yarns 9 by moving the necessary amount in the direction away from the warp yarns 9a, 9b.

Next, the sequence control unit 16 first drives the detector 3 which also serves as a feed guide, based on a preset operation order, and
By moving the discriminator 4 in the Y direction, that is, the weaving width direction, the dropped dropper 12 is determined, and the weaving width, that is, the moving amount in the Y direction is detected from the feed movement amount. As described in , all the droppers 12 of the vertical stopper fll are given identification codes, and all the identification codes are stored in the identifier 4 in correspondence with the numbers of the heald frames 8. By reading the identification code 18 attached to the dropped dropper 12, the number Fk of the corresponding heald frame 8 is determined.
If the warp yarns are threaded by making the rows of droppers 12 correspond to the numbers of the heald frames 8, then the rows of droppers 12 are detected to correspond to the cut warp yarns 9a and 9b. The number 2 of the heald frame 8 is identified, and the data of the heald frame 8 and the data in the weaving width direction are sent to the feed control section 20 of the feed guide device 5 of the three-dimensional orthogonal coordinate type, for example. In addition, the dropper 12 in the fallen state
The position in the weaving width direction is detected by the detector 3, and then, as described in Japanese Patent Application Laid-Open No. 63-28951, the dropped dropper is gripped by a gripper and then twisted by rotating the gripper. At the same time, the identification code of the dropper after being twisted may be read. Here, the feed control section 20 inputs data in the weaving width direction, that is, the Y direction, based on a numerical control method, and moves the threading device 2 together with the frame 6 from the standby position to near the cut warp yarns 9a and 9b. Then, the heald frame 8 is moved in the direction of the warp threads 9, that is, in the X direction, to the position of the heald frame 8 of 11h2 corresponding to the cut warp threads 9a and 9b. As a result, the reference portion 13 is positioned above the heald frame 8 in the column 2, and the reference portion 1
The threading device 2 is lowered together with the frame 6 until the reference piece 131 as No. 3 comes into contact with the upper surface of the heald frame 8 of NcL2 corresponding to the cut warp yarns 9a, 9b. Thereby, the threading device 2 faces the heald 81 of the heald frame 8 of the neck 2 and has the threading hole 82 located above the forward position of the needle 71.

Thereafter, a thread tying device (not shown) or a weaver ties the splicing threads 21 wound around the bobbin to the cut warp threads 9a on the sending-out side, and connects the splicing threads 21 to the thread guide 24, the loose clamper 22, and the suction nozzle 23. Hold it in a straight line between the two. Therefore, the operating means 72 moves the needle 71 in the direction of the heald 81, passes it through the through hole 82, and uses the hook portion at the tip to hold the loose clamper 22 and the suction holder 23.
By hooking the splicing thread 21 between and retreating,
The connecting thread 21 is pulled through the threading hole 82. Next, the splicing thread 21 between the bobbin and the needle 71 is attached to the loose clamper 2.
2 is cut to a suitable length by a canter 25, and tied to the cut warp yarns 9b on the side of the cloth 15 by a yarn tying device or by a weaver. Upon completion of this operation, the feed guide device 5 retreats the threading device 2 to the standby position and sets the loom to a restartable state. Therefore, the loom control device 17 receives a startup command from the sequence control section 16, starts the loom, and resumes weaving.

In this way, in the case of the first embodiment, by lowering the threading device 2, the reference piece 131 as the reference portion 13
By hitting the upper part of the heald frame 8 of the heddle 2 corresponding to the cut warp yarns 9a, 9b, the needle 71 as the threading means 7 is accurately positioned with respect to the threading hole 82 of the heald 81 of the heddle frame 8. .

Note that the width of the reference piece 131 in the warp direction 9 is the same as that of the heald frame 8.
Moreover, the protrusion length of the reference piece 131 is set to be larger than the vertical movement of the heald frame 8, so that the heald frame 8 of N112 is the lowest with respect to the heald frames 8 on both sides. Even if the reference piece 131 is in the
can be brought into contact with the upper surface of the heald frame 8 of l1h2.

[Embodiment 2 (Figs. 3 and 4)] Fig. 3 shows the main parts of the threading positioning device 1 of this Embodiment 2.

The reference plate 130 as the reference part 13 in this embodiment has a width that faces the upper part of all the heald frames 8, and is lowered to a predetermined position at the upper part of the heald frame 8 by the feed guide device 5. By moving in the X direction, the rear end portion of the thread guide 73 as the threading means 7 is cut off, and the warp threads 9a,
Move the thread guide 73 to the vicinity of the heddle frame 8 of the corner 2 corresponding to the thread 9b.The thread guide 73 has almost the same shape as a modified reed for weft insertion, and has a guide groove 74 on one side. The splicing thread 2 is injected from the through nozzle 75 along with the air flow.
1 is conveyed with airflow from a plurality of conveyance nozzles 76 to near the heald frame 8 of the neck 2 corresponding to the cut warp yarns 9a and 9b, passed through the threading hole 82 of the heddle 81, and projected to the winding side. The structure is as follows.

Then, the heald frame 8 of the patient 2 corresponding to the cut warp yarns 9a, 9b is driven by the opening drive mechanism 34 of the opening bag 210, and by rising, the reference Fi 130 is reached at the upper end portion.
comes into contact with the bottom surface of the

FIG. 4 shows an example of the opening drive mechanism 34 and leveling device 50 for the second cam. Each heald frame 8 is biased in the downward direction by a pull spring 35 of the machine frame 33 at both lower end portions, and two guide pulleys 37,
It is connected to one end of an opening lever 38 by a hanging wire 36, and is adapted to be driven by each cam 39 of a different phase angle. Note that the opening lever 38 is rotatably supported on the lever shaft 43. 4 cams 3
A cam shaft 4o common to the looms 9 and 9 rotates in conjunction with the main shaft 41 of the loom and rotates at a predetermined reduction ratio, thereby causing the opening lever 38 to rotate around the lever shaft 43 via a cam roller 42 in contact with the outer periphery of the cam 39. The heald frame 8 is driven in the vertical direction, and the warp threads 9 are given a shedding motion.

When positioning the heald frame 8 of the second heald with respect to the reference plate 130, the sequence control section 16 sends the frame number of the heald frame 8 of the second heald corresponding to the cut warp yarns 9a, 9b to the rotation control section 44. Therefore, the rotation control section 44 of the rehering device 50
The tip is rotated by rotating only the motor 45 of the opening lever 38 corresponding to the heald frame 8 of l1h2 and rotating the leveling lever 48 counterclockwise in FIG. 4 via the worm 46 and worm wheel 47. pin 4
At 9, the opening lever 38 is forcibly rotated counterclockwise around the lever shaft 43, and only the heald frame 8 of the stopper 2 is raised until its upper part contacts the reference plate 130. Reference plate 1
The state of contact between the heald frame 30 and the upper part of the heald frame 8 is detected using a sensor such as a piezoelectric element or a rimming switch provided on either of the contact surfaces. Note that this leveling lever 48 is integrated with the worm wheel 47 and is rotatably supported on the lever shaft 43. These members, together with the motor 45 and the worm 46, are provided for each opening lever 38. In this way, the leveling device 50 raises only the heald frame 8 of the neck 2 corresponding to the cut warp yarns 9a, 9b, brings its upper part into contact with the reference plate 130 as the reference part 13, and the heald frame The threading hole 82 of the heald 81 of No. 8 is accurately positioned with respect to the end of the thread guide 73 as the threading means 7 in the vertical direction.

After such positioning, the threading nozzle 75 inserts the joining thread 2 into the guide groove 74 of the thread guide 73 along with the air flow, and moves it along the inside of the guide groove 74 with the air flow of the conveyance nozzle 76. , move it through the threading hole 82 of the corresponding heald 81 , and pull it in the direction of the cloth 15 . After this threading, the connecting thread 21 is cut by the cutter 25 between the thread guide 73 and the threading nozzle 75, and
At the end on the cutting side, it is connected to the cut warp yarn 9a on the delivery side by the weaver or by an automatic thread tying device or the like.

When the threading operation is completed, the sequence control unit 16 reverses the motor 45 via the rotation control unit 44, and returns the heald frame 8 corresponding to the cut warp yarns 9a, 9b to its original height.

As described above, in this embodiment 2, after the threading device 2 has been lowered to a predetermined position, the heald frame 8 corresponding to the cut warp threads 9a, 9b is raised by the leveling device 50, and the upper portion of the heald frame 8 is brought into contact with the reference portion 13. By bringing them into contact with each other, the threading hole 82 of the heald 81 of the heald frame 8 is accurately positioned in the vertical direction relative to the guide groove 74 of the thread guide 73 serving as threading means.

[Embodiment 3 (FIGS. 5, 6 and 7)] This embodiment 3 is shown in FIG. 5, in which cut warp threads 9a, 9b are
After lowering the other heald frames 8 that do not correspond to the cut warp yarns 9a and 9b, only the heald frames 8 corresponding to the cut warp yarns 9a and 9b are raised by the movement of the cam 39, and the heald frames 8 that do not correspond to the cut warp yarns 9a and 9b are moved up by the movement of the cam 39, and the heald frames 8 that do not correspond to the cut warp yarns 9a and 9b are raised at a constant distance from the two reference sensors 132 as the reference part 13. This is an example of facing each other.

Contrary to the example shown in FIG. 4, all the heald frames 8 are suspended by tension springs 35, and are linked with an opening lever 38 by a lower wire 36.

At the time of positioning, the sequence control section 16 in FIG.
and the opening lever 3 corresponding to the other heald frame 8 mentioned above.
8 in the counterclockwise direction to separate the cam roller 42 from the corresponding cam 39, and then drive the clutch operating section 51 to separate the clutch 52 shown in FIG. After separating them, the leveling motor 53 is driven, and the gear 54.5
5 to rotate the camshaft 40 in either direction. Due to the accompanying rotation of the cam 39, the cut warp yarns 9a, 9
The heald frame 8 of N11L2 corresponding to b is driven by the cam 39, moves in the vertical direction, moves in the upward direction at a position corresponding to the bottom of the cam 39 and the cam roller 42, and projects from the other heald frames 8. Become. Eventually, the cut warp threads 9a, 9b
When the upper part of the heald frame 8 corresponding to the heald frame 8 approaches a certain distance from the reference sensor 132 such as a proximity sensor, the reference sensor 132 detects this state and gives a signal to the rotation control unit 44 to stop. The rotation of the leveling motor 53 is stopped. In this way, the heald frame 8 corresponding to the cut warp yarns 9a, 9b is accurately set in a constant positional relationship with respect to the reference portion 13 of the threading device 2, that is, the reference sensor 132. The amount of rotation of the camshaft 40, that is, the leveling motor 53 at this time, is detected as a pulse number by the shaft encoder 56 and recorded in the counter 57. Note that this counter 57 is set to a reset state at the start of the leveling operation. When the threading operation is completed, the sequence control section 16 reads the rotation amount of the leveling motor 53 from the counter 57, and gives a corresponding rotation command in the reverse direction to the rotation control section 44.
By reversing the leveling motor 53, the camshaft 40 is set to the rotational phase before being separated from the main shaft 41. After confirming this, the sequence control section 16 drives the clutch operation section 51 to bring the clutch 52 into the engaged state and set the loom to a restartable state.

[Embodiment 4 (Fig. 8)] In this Embodiment 4, as shown in Fig. 8, the opening drive mechanism 3
4 is configured as a Dobby type, and is driven by a Dobby command device 60.

Sequence - During positioning, both parts 16 drive the clutch operating part 51 and set the clutch 52 to the disengaged state. A command to raise only the frame 8 is sent to the dobby command unit 60, the leveling motor 53 is activated, the input shaft 61 of the opening drive mechanism 34 is rotated, the maximum opening angle is detected by the shaft encoder 56, and the system is stopped at that angle. . Cut warp threads 9a, 9b
Only the heald frame 8 corresponding to 11h2 is raised, and then, by lowering the reference plate 130 together with the frame 6 and applying it to the raised heald frame 8, the threading hole 82 of the heald 81 is opened by the threading device. It is in a positioning state relative to 2. After the threading operation is completed, the sequence control section 1
6 gives a return command to the Dobby command device 60, reverses the leveling motor 53 to its original phase, and controls the clutch operation unit 5.
1 to connect the clutch 52, and then send a command to the loom control device 17 for permission to operate.

[Other Embodiments] Each of the above embodiments shows a preferred combination of the threading means 7, the detector 3, and the identifier 4 of the threading device 2. The device 4 and the like can be replaced in each embodiment as long as there is no problem in operation. Further, the specific example of the threading means 7 is not limited to the one illustrated, and may be of other known types.

Further, the discriminator 4 of the above embodiment is configured to detect the dropper 1 in a dropped state.
By reading the identification code of 2, the cut warp yarn 9
Although the numbers of the heald frames 8 corresponding to the cut warp yarns 9a and 9b are determined, the numbers of the heald frames 8 corresponding to the cut warp yarns 9a and 9b can also be detected by, for example, the following detector ff100. That is, as shown in FIG. 10 as well as in FIG. 9, the detection device 100 detects the weaving width direction by an endless bell (102) wound between a pair of pulleys 101 driven by a drive motor (not shown). A guide 103 in the direction of the warp thread 9
The rack 105 is slidably held at this portion. This rank 105 is movable in the direction of the warp yarns 9 by a pinion 106 of a motor 104, and has two sensors 108 and a sensor 109 oriented horizontally and downward at the upper end portion of a holder 107 at its tip. One horizontal sensor 108 is provided to detect the heald 81 of the heald frame 8, and a downward sensor 109 is provided to specify one of the plurality of heald frames 8. .

In the case of this embodiment, the four heald frames 8 are arranged in the direction of the warp threads 9, as shown in FIG. By repeating this support B, all the warp yarns 9 are held.

These warp yarns 9 are each supported by a heald 81, and are passed through two each of the threads of the reed feathers 110.

Therefore, the two wires inserted between one reed feather 110
The warp threads 9 of a book have a certain relationship with respect to the numbers of the heald frames 8 that support the warp threads 9. Each member through which the warp threads 9 are inserted, for example, the heald 81, is given a unique identification code 145 corresponding to the number of the heald frame 8 that supports it. This identification code 145 is stored in the storage device 146 for each warp yarn 9 inserted between the same reed feathers 110.

When detecting the frame number, the detection device 100 moves forward in the direction of the cut warp yarns 9b, 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 81.

During this forward movement, when the sensor 109 is turned on,
Since it is detected that the first heald frame 8 has been reached, a count is started to detect the amount of rotation of the motor 104. Then, when the sensor 108 is turned on,
Since the heald 81 has been detected, counting is stopped, and the frame number of the heald frame 8 is calculated from the counted amount of rotation. This counting 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 8 is stored in advance, and the number of times the amount of rotation of the motor 104 counted is the amount of rotation recorded above is calculated. Desired. As a result, the cut warp threads 9a
, 9b is detected.

Next, the controller determines from the contents of the storage device 146 and the determined identification code 145 whether the warp thread 9 passing between the cut warp threads 9a, 9b and the same reed feather 110 is the left or right one. , after setting the conditions for positioning, turning on the motor 104 in the reverse direction;
The sensors 108 and 109 are 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.

Furthermore, as a method of detecting the number of the heald frame 8, for example, a known vertical stopper device that detects the fall of the heald 81 and the breakage of the heald thread 9 is applied, and the frame number of the fallen heald 81 is detected. It may also be detected.

〔Effect of the invention〕

In the present invention, the heald frame corresponding to the cut warp yarn is in contact with the reference part on the threading device side, or is set at a constant distance, so there is no error in the stopping position of the heddle frame, the warp line, or the opening amount. Regardless of changes, threading means,
The heald threading hole of the heald frame and the heald threading hole are accurately positioned, especially in the vertical direction. Therefore, by restricting the amount of movement of only the threading device relative to the heald frame when the loom is stopped, positioning accuracy is improved compared to conventional positioning means that align the two relative to each other. The accompanying threading operation is also ensured.

In addition, if the heddle frame is of the same type, the positioning device can be used in common for different types of looms or multiple looms of the same type, and the threading positioning device can be installed on various looms or between the same looms. It becomes possible.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of the positioning device for threading according to the first embodiment, Fig. 2 is a plan view of the warp threads in a separated state, and Fig. 3 is a side view of the main parts of the positioning device for threading according to the second embodiment. 4 is a schematic front view of the opening drive mechanism and leveling device of Example 2, FIG. 5 is a schematic front view of the opening drive mechanism and leveling device of Example 3, and FIG. 6 is a schematic front view of the opening drive mechanism and leveling device of Example 3. 7 is a block diagram of the electrical control part of the third embodiment, FIG. 8 is a block diagram of the threading positioning device of the fourth embodiment, and FIGS. 9, 10, and FIG. 11 is an explanatory diagram of the held frame number detection portion. 1. Positioning device for threading the m machine, 2. Threading device, 3. Detector, 4. Discriminator, 5. Feeding guide device,
7. Threading means, 8. Heald frame, 9. Warp thread, 9
a, 9b... Cutting warp yarn, 10... Shedding device, 11...
Vertical fixing device, 13..Reference section, 16..Sequence control section, 17..Loom control device, 20..Feed control section, 2
1. Splicing thread, 30. Separation device, 34. Shedding drive mechanism, 44. Rotation control unit, 50. Leveling device, 6
0...Dobby command unit. Patent Applicant Tsudakoma Kogyo Co., Ltd. Representative Patent Attorney Kunio Nakagawa Figure 2 8: Held frame 14. Weft 9: Warp
15: Cloth 9a, 9b: Cut warp thread
28 = Separation member 10: Opening device 29
: Nomer 11: Vertical stopper w 30- Separation device 12 Nitro tsuba 81: Held No. 3
Section 73: Thread guide 75, threading nostle 76, conveyance nostle (Fig. 4), leveling par 50, leveling device (Fig. 5) 52: Craftsmanship 53 Leveling motor 56: Shaft encoder Fig. 9

Claims (2)

[Claims] (1) In a threading device having a threading means for threading the thread through a heddle corresponding to the cut warp threads and a reference part fixed in a predetermined positional relationship with respect to the threading means, A detector for determining the position, a discriminator for identifying the heddle frame corresponding to the cut warp threads, and information in the weaving width direction from the detector to move the threading device from the standby position along the weaving width direction. At the same time, information on the heald frame from the discriminator is input, and the threading means is displaced to the position of the heald frame corresponding to the cut warp yarn, thereby setting the reference part and the heald frame corresponding to the cut warp yarn in a specific positional relationship. 1. A threading positioning device for a loom, comprising a feed guide device. (2) In a threading device having a threading means for passing the thread through a heddle corresponding to the cut warp threads and a reference part fixed in a predetermined positional relationship with respect to the threading means, A detector that determines the position, a discriminator that identifies the heald frame corresponding to the cut warp yarn, and a heald frame information input from the discriminator that compares the heald frame corresponding to the cut warp yarn with other heald frames relative to each other. The leveling device to be displaced and the threading device are moved along the weaving width direction from the standby position by inputting information in the weaving width direction from the detector, and the threading device is moved relative to the heald frame corresponding to the cut warp yarns. A threading positioning device for a loom, comprising a feed guide device that sets the reference portion in a specific positional relationship with respect to a heddle frame corresponding to the cut warp yarns.