JP2002105802A - Weft yarn-cutting device and tuck-in ear-forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the change of tuft ear length and the variation of width of a folded back ear by positively changing the tuft ear length that is the weft yarn passage length from a woven end to a cutter by corresponding to the change of the specification of a woven fabric or a weaving condition. SOLUTION: This yarn-cutting device has a cutter 11 for cutting the weft yarn 3 in the vicinity of the weaving end of the woven fabric, an acting means 15 for changing the weft yarn passage length from the position of the weaving end of the woven fabric 9 to the cutter 11, an operating means 26 for operating the acting means 15 through an electric moving actuator 14 and a setting means 25 for setting the weft yarn passage length. In the setting means 25, an operating command for the electric moving actuator 14 corresponding to a weft insertion pick is set in advance, and the operating means 26 operates the electric moving actuator 14 based on the set command corresponding to the weft insertion pick for changing the weft yarn passage length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fragmentary loom, in which a weft is cut by a cutter arranged at a weaving end of a woven fabric, the weft path length from the weaving end of the woven fabric to the cutter is actively changed. The present invention relates to a weft cutting device and a tuck-in ear forming device that folds a cut end of a weft into a warp opening.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 2000-45149 discloses a fragmentary loom which comprises a movable weft cutting device as a marking device for marking a woven fabric in response to a marking factor. Along with the cause being a marking factor, after restarting the loom, the weft cutting device was moved to a position corresponding to the previous stoppage cause, and the length of the tuft was formed to a length corresponding to the marking factor. ing.

[0003]

The above-mentioned Japanese Patent Laid-Open Publication No. 2000-2000
No. 45149 does not mention anything about positively changing the length of the tuft in response to switching of the fabric specifications and weaving conditions. For example, a regulating member (a heald,
When weaving shrinkage occurs between the reed) and the tensile member (temple) on the woven fabric side and the degree of shrinkage varies depending on weaving conditions, the position of the weft cutting device is fixed, and the length of the tuft is fixed. There is a problem that changes. This problem,
The same problem occurs in the tack-in ear forming apparatus, and as a result, the width of the folded ear fluctuates, and there is a problem that the quality of the fabric deteriorates.

Accordingly, an object of the present invention is to positively change the length of the tuft, that is, the length of the weft path from the weaving end to the cutter, in response to switching of the fabric specifications and weaving conditions. The purpose is to eliminate variations in ear length and variations in the width of folded ears.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention relates to a weft cutting device, comprising: a cutter for cutting a weft thread near a weaving end of a woven fabric; Operating means for changing the length of the weft path leading to, operating means for operating this operating means via an electric actuator, and setting means for setting the weft path length, the setting means In response to the weft insertion pick, an operation command for the electric actuator is set in advance, and the operating means operates the electric actuator based on the setting command corresponding to the weft insertion pick, and the weft path length is set. To change it.

[0006] A rotation signal of the loom is input to the operation means, and an operation command corresponding to a weft pick count is set in the setting means in advance. The weft insertion pick within one repeat is counted, and the electric actuator is operated based on a corresponding setting command.

[0007] In the setting means, the corresponding operation command is set so as to form different weft path lengths in one weaving repeat based on the fabric specifications.

The operating means has a built-in selection signal generator for outputting a selection signal in accordance with the rotation of the loom, and the setting means has the operation command corresponding to the selection signal set therein. The operating means operates the electric actuator based on a setting command corresponding to switching of the selection signal from the selection signal generator.

The operation command is set in the setting means so as to eliminate the fluctuation of the weft path length due to the shrinkage of the woven fabric in one weaving repeat.

[0010] In the setting means, a command relating to operation on / off of the electric actuator is set as the operation command.

In the setting means, the operation amount of the electric actuator is set as the operation command.

The action means includes a mechanism for moving the cutting position of the cutter relative to the cloth edge by operating an electric actuator.

[0013] The action means has an engagement surface which engages with the weft produced by the reeding motion of the reed, and a mechanism for moving the engagement surface relative to the weave end by operating an electric actuator. Including.

The operating means has a nozzle for injecting fluid into the weft produced by the beating movement, and the electric actuator includes an ejection control valve for controlling a pressure fluid supplied to the nozzle. The fluid ejection from the nozzle is changed in accordance with the above operation, and the weft path length is changed.

Further, the present invention provides a tack-in ear forming apparatus, in which a cutter for cutting a weft in the vicinity of a weaving end, an operating means for changing a length of a weft path from a position of the weaving end to the cutter, and this operating means. Operating means for operating the weft path length via an electric actuator, setting means for setting the weft path length, and a tuck-in means for turning the cut end of the weft into a warp opening, and the setting means includes: An operation command for the electric actuator is set in advance, and the operation means operates the electric actuator based on the operation command from the setting means, changes the length of the weft path, and opens the cut end of the weft to the warp shed. It wraps around inside.

In the setting means, an operation command for the electric actuator is set in advance corresponding to a weft insertion pick constituting one weaving repeat, and the operation means responds to a setting command corresponding to the weft insertion pick. Then, the electric actuator is operated.

A rotation signal of the loom is input to the operation means, and an operation command corresponding to the weft pick count is set in the setting means in advance. The weft insertion pick within one repeat is counted, and the electric actuator is operated based on a corresponding setting command.

In the setting means, the corresponding operation command is set so as to form different weft path lengths in one repeat of the weaving based on the specifications of the fabric.

The operating means has a built-in selection signal generator for outputting a selection signal in accordance with the rotation of the loom, and the setting means has the operation command corresponding to the selection signal set therein. The operating means operates the electric actuator based on a setting command corresponding to switching of the selection signal from the selection signal generator.

In the setting means, the operation command is set so as to eliminate the fluctuation of the length of the weft path due to the shrinkage of the woven fabric in one weaving repeat.

In the setting means, a command relating to operation on / off of the electric actuator is set as the operation command.

In the setting means, the operation amount of the electric actuator is set as the operation command.

The action means includes a mechanism for moving the cutting position of the cutter relative to the cloth edge by operating an electric actuator.

The action means has a mechanism for engaging the weft produced by the reeding movement of the reed, and for moving the engaging surface relative to the weave end by operating an electric actuator. Including.

The action means has a nozzle for ejecting fluid to the weft produced by the beating movement, and the electric actuator includes an ejection control valve for controlling a pressure fluid supplied to the nozzle. The fluid ejection from the nozzle is changed in accordance with the above operation, and the weft path length is changed.

The construction of the present invention is as described above, but the cutter, the operating means, the operating means, the setting means, the tuck-in means and the like are implemented in accordance with the specific examples shown in the following embodiments of the invention. it can.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows, as an example, a main part of a two-width air-injection loom, in particular, a weft cutting device 1 and a tuck-in ear forming device 2. The weft yarn 3 is inserted into the opening 6 of the warp yarn 5 by the weft insertion main nozzle 4, and is urged by a plurality of sub-nozzles 7 to be inserted. The inserted weft yarn 3 is driven into the weaving front 9 a of the woven fabric 9 by the beating motion of the reed 8.

Thereafter, the weft cutting device 1 comprises a cutter 11 and a drive source 12 for opening and closing the cutter 11, and cuts the weft 3 driven into the weave 9a by the cutter 11 near the weaving end of the woven fabric 9. I do. The cut end of the weft yarn 3 is discharged by the yarn end processing device 16. The opening / closing drive source 12 is configured as either a mechanical drive linked with the main shaft 13 or an electric drive synchronized with the main shaft 13.

The tuck-in ear forming device 2 is provided with a tuck-in means 10, which folds the cut weft yarn 3 into the opening 6 to be formed next, and forms a tuck-in ear at the woven end of the woven fabric 9. I do. The tuck-in means 10 of the tuck-in ear forming device 2 is a needleless stack-in device (air tacker), and the weft 3
Is folded back into the opening 6 to be formed next, but it is also possible to configure a needle type tuck-in device so that the weft is folded back into the opening 6 to be formed next by the needle.

Here, the cutter 11 of the weft cutting device 1 is
It is movable by a combination of an electric actuator 14 such as a pulse motor and an action means 15. The action means 15 changes the weft path length from the position of the weaving end of the woven fabric 9 to the cutter 11 by moving the cutter 11.

The direction of movement of the cutter 11 is such that the position of contact of the blade of the cutter 11 with the weft 3 is moved, and the length of the weft path from the position of the weaving end of the woven fabric 9 to the cutter 11 is substantially changed. In this case, any direction may be used, and the weaving width direction or the other direction is set in one or more axial directions, such as the front-rear direction of the weave 9a, the vertical direction, or the like.

The action means 15 shown in FIG. 2 is provided with a holder 18 movable in the Z-axis direction on an indexing mechanism 17 in the X-axis and Y-axis directions, and by disposing the cutter 11 in this holder 18. The cutter 11 is movable in three axial directions.

FIGS. 3, 4 and 5 show typical specific examples of the action means 15 which can be moved only in the X-axis direction (weave width direction). The action means 15 in FIG. 3 converts the rotation of the electric actuator 14 into linear motion by a gear / feed screw unit 20 as a rotation conversion means 19,
Is moved in the X-axis direction (weaving width direction). The action means 15 in FIG. 4 converts the rotation of the electric actuator 14 into linear motion by the slider crank mechanism 21 as the rotation conversion means 19, and moves the holder 18 of the cutter 11 in the X-axis direction (weave width direction). . The action means 15 of FIG.
The rotation of the cutter 11 is converted into a swinging motion about the fulcrum 23 by the cam mechanism 22 as the rotation converting means 19, and the holder 18 of the cutter 11 is moved in the X-axis direction (the weaving width direction).

FIG. 6 shows the control device 24. The control device 24 includes a setting means 25 for setting the length of the weft path, and an operation means 26 for operating the action means 15 by the electric actuator 14 based on an operation command from the setting means 25.

The operator previously sets the amount of movement for each axis as setting data in the setting means 25 as an operation command for the electric actuator 14 in accordance with the weft insertion pick count. The setting means 25 is capable of adjusting the position of the cutter 11 in two modes (stopped / during operation), and in the operation mode, in accordance with the weft insertion pick count, the position of the cutter 11 for each weft insertion. For adjustment, a drive curve for one weaving repeat is created based on the setting data, and the data of the drive curve is sent to the controller 27 of the operating means 26. Here, the driving curve of weaving 1 repeat is expressed by weaving 1
The repeat is created as the amount of movement in each axis direction with respect to the rotation angle of the main shaft 13 corresponding to the weft insertion pick count.

The operating means 26 controls the electric actuator 14 to change the weft path length L based on the amount of movement of the spindle 13 corresponding to the weft pick count in the axial direction with respect to the rotation angle. 27, a drive amplifier 28 for each axis, an electric actuator 1
4 and motion converting means 19 (gear / feed screw unit 20, slider crank mechanism 21, cam mechanism 22).

The controller 27 receives the operation / stop signal, the rotation signal (angle signal) from the angle detector 29 connected to the main shaft 13 and the data of the driving curve, and receives the rotation angle of the main shaft 13 from the angle detector 29. , A drive curve is stored for each pick count, and a rotation amount signal of a drive amount corresponding to the rotation angle is output to the drive amplifier 28 for each axis based on the drive curve corresponding to the pick count. The drive amplifier 28 is an electric actuator 1 such as a pulse motor.
4 is operated, and the operation means 15 in each axial direction is individually operated via the motion conversion means 19.

In this manner, the control device 24 adjusts the position of the cutter 11 based on the driving curve corresponding to the pick count so that the width of the folded ear from the weaving end of the woven fabric 9 is always constant. I do. Normally, on a loom that changes weaving conditions such as multi-color weft insertion, change weaving that periodically changes the driving density, pile weaving, etc. during weaving, weaving conditions are set in advance corresponding to the weft insertion pick count, and picking is performed. The weaving conditions are switched according to the count. Therefore, the weft path length can be easily changed by using the original pick count.

When the length of the folded ears is kept constant in response to the switching of the weaving conditions, the causes / attention weaving conditions are as follows (1), (2) and (3).

(1) The return path (length) may be changed by a weft (thread type / thickness), by the number of return wefts when the tuck-in operation is periodically continued, by a weft ( In addition to the thread type / thickness), there is a command due to a tuck-in operation command / tack-in non-operation command, and a command due to a change in position before weaving, such as a driving density of a weft and a winding speed of a woven fabric.

(2) As a result of the shrinkage of the weft yarn during and after the weaving of the weft, a parameter related to the position before weaving (the position of the weft), a parameter related to the position before weaving (the position of the weft), and the warp There are parameters related to the holding force on the weft, such as tension.

(3) Since the degree of weaving shrinkage changes, it is inevitable to change the length of the weft path. Weaving instructions such as piles and borders, weaving structures such as flat, twill, and satin, and yarn types and thicknesses There are parameters related to weaving such as weft, position before weaving, weaving switching signals such as first pick and loose pick during pile weaving, and weft driving density.

FIG. 7 shows a modified example of the control device 24. In this modification, the selection signal generator 30 in the control device 24 uses a dog connected to the main shaft 13 to change the position of the cutter 11 to the controller 27 by a weaving condition switching signal instead of the pick count. 31, two sensors 32, a step signal generator 33, a switching signal generator 34, and a setting device 35. Step signal generator 3
3 generates a stepping signal for each rotation of the main shaft 13 in the forward and reverse directions and sends it to the switching signal generator 34. The switching signal generator 34 counts the weft insertion pick, and sets the
, And outputs it to the controller 27.

Since the function of the selection signal generator 30 is the same as that of an electronic dobby (pattern output device) or a weft selection signal generator of a multicolor weft insertion loom, those functions can also be used. The change of the weft path length may be performed instantaneously with the change of the weaving condition.
When the degree of weaving changes gradually due to the progress of the weft insertion pick, as in the case where the weft path length must be changed because the degree of weaving changes, use an appropriate function generator etc. according to the change May be performed gradually over a plurality of picks.

Furthermore, weft path length (width of folded ears)
Can be realized by bending the weft 3 without changing the position of the cutter 11.

FIG. 8 shows an example in which an engagement piece 36 for bending the weft 3 is arranged between the weaving end of the woven fabric 9 and the cutter 11 at a fixed position. The engagement piece 36 forms a chevron-shaped engagement surface 37 along the path of the weft 3 carried by beating.
The weft 3 carried by beating is bent by riding on the chevron engagement surface 37. As a result, the length of the weft path becomes longer between the woven end of the woven fabric 9 and the cutter 11. Moreover, the length of the weft path is determined by the electric actuator 14.
Can be changed by operating the position of the engagement piece 36 with respect to the weft 3 up and down or in the front-rear direction via. This control can be used by any of the control devices 24 shown in FIGS. In addition, the engagement surface 37 may be formed along the entry path of the weft 3 or so as to intersect with the entry path of the weft 3, and the forming direction is not limited to the example.
Optional.

FIG. 9 shows the action means 15 as a locking pin 38 which can be driven forward and backward crossing the approach path of the weft 3.
This is an example in which the weft 3 is bent. The locking pin 38 is a weft 3
1 or 2 or more according to the amount of bending. One or two or more electric actuators 14 select one of these locking pins 38 and drive so as to advance to the entrance path of the weft 3 carried by beating.
Although the drive control of these locking pins 38 is omitted, it can be realized by causing the controller 27 to output a selection signal corresponding to the pick count and driving the electric actuator 14 such as a plunger.

FIG. 10 shows the engagement piece 3 as the action means 15.
6 and the weft 3 carried by beating instead of the locking pin 38
This is an example in which a nozzle 39 that ejects a fluid in a direction that opposes the pressure is applied to the weft 3 to cause the ejected fluid from the nozzle 39 to act on the weft 3.

FIG. 11 shows an example of the control device 24 for controlling the nozzle 39. In the control device 24, an injection command (injection pattern) of an injection condition corresponding to the yarn type is set in advance in the setting unit 25. The controller 27 adjusts the pressure of the fluid from the pressurized fluid source 40 by driving the electric actuator 41 of the pressure adjusting means 43, so that the electric actuator 41
To open and close the injection control valve 44.

The amount of bending of the weft 3 is adjusted by changing the injection conditions of the nozzle 39 such as the injection pressure from the nozzle 39, the injection flow rate from the nozzle 39, and the injection period (injection start timing and injection end timing) of the nozzle 39. it can. Therefore, a corresponding command is set in the setting device 25. The position of the nozzle 39 and the ejection direction can be changed to change the length of the weft path.

FIG. 12 shows an example in which the weft 3 is bent by engaging the weft 3 with an inflatable and contractible tube 45 using the pressure of a fluid. The fluid is supplied from the pressure fluid source 40 and is sent to the inside of the expandable / contractible tube 45 through the pressure adjusting means 43 in the operating means 26.
Thereby, the tube 45 expands or contracts, thereby changing the thickness, changing the engagement position with the weft 3 and changing the degree of bending of the weft 3.

The present invention is not limited to the specific examples described above, but can be implemented with the following modifications. The action means 15
Instead of being configured as one, two or more can be configured. The two or more action means 15 are arranged at predetermined positions, and are selectively driven during operation to perform the above-described functions. This can be applied to the change of the position of the cutter 11, the action of the engagement piece 36, the ejection of the nozzle 39, and the like.

Regarding the configuration for changing the weft path length described above, each of the specific examples described above may be realized independently, or two or more different methods may be realized in combination. The tack-in ear forming device 2 can be applied not only to multiple widths but also to one width. In the tuck-in-ear forming device 2, the length of the tuft can be changed freely, a high-value-added fabric can be woven to date, and the desired length of the tuft can always be maintained. In the related art, the degree of weaving shrinkage is affected by a change in weaving conditions. In the present invention, the degree of shrinkage is not affected by a change in weaving conditions.

Of course, the present invention does not have the tuck-in ear forming device 2 and can be embodied alone as the weft cutting device 1 disposed at both ends of the woven fabric 9 with a shuttleless loom. It is feasible.

[0055]

According to the weft cutting device of the present invention, the length of the tuft can be positively set and changed. Therefore, the length of the tuft can be freely changed in the design and design, and weaving of unprecedented value-added fabric is possible, and the length of the tuft is constant without being affected by the shrinkage of the woven fabric. Can be. This also eliminates the need to trim the length of the tuft after weaving.

Further, in the tack-in ear forming apparatus of the present invention, the length of the weft path can be set for each weft insertion, and the width of the folded ear can be easily set. As a result, the width of the folded ears can be freely changed in the design, making it possible to manufacture unprecedented high-value-added woven fabrics. Furthermore, it is possible to change the weaving conditions (shrinkage of the weft and fluctuation of the shrinkage of the woven fabric). Regardless,
The width of the folded ear can always be kept constant.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a weft cutting device 1 of the present invention and a tuck-in ear forming device 2 of the present invention in a two-width air jet loom.

FIG. 2 is a plan view of an operation unit 15 that can be indexed in directions of an X axis, a Y axis, and a Z axis.

FIG. 3 is a plan view of the action means 15 indexable in the X-axis direction.

FIG. 4 is a plan view of the action means 15 indexable in the direction of the X axis.

FIG. 5 is a plan view of the action means 15 indexable in the X-axis direction.

FIG. 6 is a block diagram of the control device 24.

FIG. 7 is a block diagram of the control device 24.

FIG. 8 is an explanatory diagram of another operation means 15;

FIG. 9 is an explanatory view of another operation means 15;

FIG. 10 is an explanatory view of another operation means 15;

11 is a block diagram of the control device 24. FIG.

FIG. 12 is an explanatory view of another operation means 15;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weft cutting device 2 Tuck-in ear forming device 3 Weft 4 Main nozzle 5 Warp 6 Opening 7 Sub nozzle 8 Reed 9 Woven fabric 9a Before weaving 10 Tuck-in means 11 Cutter 12 Opening / closing drive source 13 Main shaft 14 Electric actuator 15 Acting means 16 Thread end processing device Reference Signs List 17 Indexing device 18 Holder 19 Motion conversion means 20 Gear / feed screw unit 21 Slider crank mechanism 22 Cam mechanism 23 Support point 24 Control device 25 Setting means 26 Operation means 27 Controller 28 Drive amplifier 29 Angle detector 30 Selection signal generator 31 Dog 32 Sensor 33 Step signal generator 34 Switching signal generator 35 Setting device 36 Engagement piece 37 Engagement surface 38 Lock pin 39 Nozzle 40 Pressure fluid source 41 Electric actuator 42 Electric actuator 43 Pressure regulating means 44 Injection control 45 tube

Claims (21)

[Claims] 1. A cutter for cutting a weft in the vicinity of a weaving end of a woven fabric, an operation means for changing a weft path length from a position of the weaving end of the woven fabric to the cutter, and an electric actuator comprising Operating means for operating the electric actuator, and setting means for setting the weft path length, wherein an operating command for the electric actuator is set in advance in correspondence with the weft insertion pick. A weft cutting device, wherein the operation means changes the weft path length by operating the electric actuator based on a setting command corresponding to a weft insertion pick. 2. A rotation signal of a loom is input to the operation means, and an operation command corresponding to a weft pick count is set in the setting means in advance. 2. The weft cutting device according to claim 1, wherein the weft insertion picks in one weaving repeat are counted according to the following and the electric actuator is operated based on a corresponding setting command. 3. The corresponding operation command is set in the setting means so as to form a different weft path length in one repeat of the weaving based on a fabric specification. Weft cutting device. 4. The operation means has a built-in selection signal generator for outputting a selection signal in accordance with the rotation of the loom, and the setting means receives the operation command corresponding to the selection signal. The weft cutting device according to claim 1, wherein the operating means operates the electric actuator based on a setting command corresponding to switching of a selection signal from the selection signal generator. 5. The operation command is set in the setting means so as to eliminate a change in a weft path length due to a shrinkage of a woven fabric in one weaving repeat. The weft cutting device according to claim 4. 6. The weft cutting device according to claim 1, wherein an instruction relating to operation on / off of an electric actuator is set as the operation instruction in the setting unit. 7. The weft cutting device according to claim 1, wherein an operation amount of an electric actuator is set as the operation command in the setting unit. 8. The apparatus according to claim 1, wherein the action means includes a mechanism for moving a cutting position of the cutter relative to a weave end by operating an electric actuator. A weft cutting device as described. 9. A mechanism having an engagement surface for engaging a weft produced by a beating motion, and for moving the engagement surface relative to a weave end by operating an electric actuator. The weft cutting device according to claim 1, 2 or 4, wherein the device comprises: 10. The operating means has a nozzle for injecting a fluid to a weft produced by a beating movement, the electric actuator includes an ejection control valve for controlling a pressure fluid supplied to the nozzle, and 5. The weft cutting device according to claim 1, wherein the weft path length is changed by changing the fluid ejection from the nozzle in accordance with the operation of the control valve. 11. A cutter for cutting a weft near a weaving end, an operating means for changing a length of a weft path from a position of the weaving end to the cutter, and an operating means for operating the operating means via an electric actuator. Setting means for setting the length of the weft path, and tuck-in means for turning the cut end of the weft into the warp opening, and an operation command for the electric actuator is set in advance in the setting means. The operating means operates an electric actuator based on an operation command from the setting means, changes the length of the weft path, and folds the cut weft end into the warp opening. Forming equipment. 12. An operation command for the electric actuator corresponding to a weft insertion pick constituting one weaving repeat is preset in the setting means, and the operation means is a setting command corresponding to the weft insertion pick. The tuck-in-ear forming device according to claim 11, wherein the electric actuator is operated based on the following. 13. A rotation signal of a loom is input to said operation means, and an operation command corresponding to a weft insertion pick count is set in said setting means in advance. 13. The tack-in ear forming device according to claim 11, wherein the weft insertion picks in one weaving repeat are counted according to the following and the electric actuator is operated based on a corresponding setting command. 14. The corresponding operation command is set in the setting means so as to form different weft path lengths in one weaving repeat based on a fabric specification. Item 13. A tack-in ear forming device according to Item 12. 15. The operating means has a built-in selection signal generator for outputting a selection signal corresponding to the rotation of the loom, and the setting means receives the operation command corresponding to the selection signal. 13. The tuck-in-ear forming device according to claim 11, wherein the operating means operates the electric actuator based on a setting command corresponding to switching of a selection signal from the selection signal generator. apparatus. 16. The operation command is set in the setting means so as to eliminate a change in a weft path length due to a shrinkage of a woven fabric in one weaving repeat. The tuck-in ear forming device according to claim 12. 17. The tack-in ear forming device according to claim 11, wherein the setting means is set with a command regarding operation on / off of the electric actuator as the operation command. 18. The tack-in ear forming apparatus according to claim 11, wherein an operation amount of an electric actuator is set as the operation command in the setting unit. 19. The apparatus according to claim 11, wherein the action means includes a mechanism for moving a cutting position of the cutter relative to a weave end by operating an electric actuator.
Or the tack-in ear forming device according to claim 12. 20. A mechanism for moving the engagement surface relative to the weaving end by operating an electric actuator, wherein the action means has an engagement surface for engaging a weft produced by a beating movement. The tack-in ear forming device according to claim 11 or 12, wherein the device comprises: 21. The operating means has a nozzle for ejecting a fluid to a weft produced by a beating motion, and the electric actuator includes an ejection control valve for controlling a pressure fluid supplied to the nozzle. 13. The tack-in ear forming device according to claim 11, wherein a fluid ejection from the nozzle is changed in accordance with an operation of a control valve, and a weft path length is changed.