KR19990023253A - Abnormality detection device in wefting device of repier loom - Google Patents

Abstract

The present invention detects surface peeling of a rare band, and a pair of position regulating rollers 17 and 18 are rotatably supported by the support plate 16. The position regulating rollers 17 and 18 restrict the rapier band 12 to the circumferential surface of the rapier wheel 13. It is arrange | positioned in the support plate 16 so that the range E which a pair of limit switches 19 may wind up may correspond. The detection roller 192 is close to the referee band 12. The detection area of the limit switch 19 is close to the traveling path of the rare band 12 in the range E that is wound.

Description

Abnormality detection device in wefting device of repier loom

The present invention relates to an abnormality detecting device in a wefting device of a repier loom.

(Conventional technology)

As disclosed in Japanese Unexamined Patent Publication No. 2-251636 and Japanese Unexamined Patent Publication No. 4-34044, a weaving apparatus in a repier loom is wound around a repetitive band and a repetitive band fixedly attached to a repetitive band. There is a mechanism consisting of a piercing wheel. In the case of driving a band capable of bending and deforming rigidly, such as a rare band, a wheel that winds up such a band is used. The piercing wheel is reciprocated, the piercing band fixedly mounted on the piercing band enters the inclined opening, and at the same time, it is evacuated in the inclined opening to weft the weft. A power transmission gear is provided in the circumferential direction on the circumferential surface of the rapier wheel, and a power receiving hole is provided in the longitudinal direction of the band in the rapier band. The reciprocating rotation of the rapier wheel is transmitted to the rapier band based on the coupling of the power transmission gear and the power receiving hole.

Cracks are generated in each part of the power receiving hole for the coupling between the power transmission gear and the power receiving hole, which develops as the break of the rapier band. In the rapier band of Japanese Patent Laid-Open No. 2-251636, a countermeasure for preliminarily confirming the breakage of the repetitive band by introducing a conductor into the rare band and breaking the current through the conductor is employed. In the apparatus of Japanese Patent Laid-Open No. 4-34044, a countermeasure for monitoring the frictional state of the power receiving hole is detected by detecting the size of the power receiving hole or the gap of the coupling power receiving hole with a photoelectric sensor.

In the technique described in Japanese Patent Laid-Open No. 2-251636, there is a fear that the lead wire breaks faster than the life of the repetitive band itself due to repeated bending. Further, in the technique described in Japanese Patent Laid-Open No. 4-34044, accurate friction detection is quite difficult because the photoelectric sensor must monitor the power receiving hole of the high speed reciprocating band.

In addition, the mainstream is the adoption of a high-strength material, for example, a rare band having a structure in which carbon fibers are laminated in multiple layers. In such a laminated structure, when a crack occurs in the surface layer, the surface layer part is peeled off, and this peeling part damages the inclination. It is impossible to detect the peeling of the surface layer of the repair band in either of the wire embedding method of Japanese Patent Laid-Open No. 2-251636 and the friction detection method of the power receiving hole of Japanese Patent Laid-Open No. 4-34044.

An object of the present invention is to detect the surface layer of the rapier band and the friction of the power receiving hole with a simple configuration.

(Means to solve the task)

In the first invention therefor, a traveling position abnormality detecting means for detecting the abnormality of the running position of the rare band is arranged, and the detection area of the traveling position abnormality detecting means is brought close to the traveling route of the rare band.

When the surface layer of the laminated band of the laminated structure is peeled off, this peeling piece floats on the surface of the rare band so that the running path of the peeling piece deviates from the original running path of the rare band. The running position abnormality detecting means detects the peeling piece that deviates from the original running path of the rapier band.

In the second aspect of the present invention, the traveling position abnormality detecting means is disposed at a position corresponding to a winding range of the winding the rare band around the rare band.

When the power receiving hole of the rapier band is worn, it is lifted (floated) from the circumferential surface of the rapier wheel by centrifugal force where the rapier band is wound around the rapier wheel. The running path of this floating part deviates from the original running path of the rapier band. The running position abnormality detecting means detects a floating part that deviates from the original running path of the rapier band.

According to a third aspect of the present invention, the repetition band is wound around a boundary between a reel band that is wound around the repetition wheel and a non-reel reeling range that does not reel the reel band around the reef wheel. Is provided on the boundary body on the side where the repetition band is located rather than the regulator body on the side of the side where the repetition band is absent. The traveling position abnormality detecting means was arranged at a close position.

The rapier band tends to float to the winding range side close to the boundary on the side where the rapier band is located because of the inertial mass of the rapier head. Therefore, the position of the reeling range closer to the regulator disposed near the boundary on the side where the repetition band is located than the regulator disposed on the boundary side on the side without the repetition band is an arrangement position of the traveling position abnormality detecting means. desirable.

In a fourth aspect of the invention, a limit switch is employed as the travel position abnormality detecting means.

The limit switch is preferable as the travel position abnormality detecting means.

1 is a front view showing a first embodiment.

2 is an exploded view of FIG. 1X

3 is an enlarged side view of an essential part showing a second embodiment;

4 is an enlarged side view of an essential part showing a third embodiment;

Fig. 5 is a front view showing the fourth embodiment.

Explanation of symbols for main parts of the drawings

12: rapier band 13: rapier wheel

17, 18: position regulating roller

19, 20, 25, 26: limit switch serving as an error detecting means for driving position

A first embodiment of the present invention is described below with reference to Figs.

Reference numeral 11 shown in FIG. 1 denotes a transmission band for insertion inserted into the opening of the weft yarn (not shown) at the end side of the weft insertion. The transmission rare band 11 is fixedly attached to the distal end of the rare band 12, and the rare band 12 is wound around the rare wheel 13. The support shaft 131 supporting the rare wheel 13 is reciprocated in synchronization with the rotation of the loom, and the rare wheel 13 reciprocates around the support shaft 131. A repetition band (not shown) is wound around the repetition wheel (not shown) which reciprocally rotates on the end side of the weft threading. At the distal end of the rare band, a receiving rare band (not shown) is fixedly mounted. By the reciprocating rotational movement of both the wheels, the delivery rare band 11 and the receiving rare band are inserted in the inclined opening, and the delivery rare band 11 and the receiving rare band are in the inclined opening. It is inserted into, the transmission band 11 and the receiving receiver band meets in the middle portion of the loom width. The weft yarn inserted into the inclined opening by the delivery rapier band 11 is transmitted to the receiving rapier band. By the reciprocating rotational movement of both of the wheels, the delivery rare band 11 and the receiving rare band are withdrawn from the inclined opening, and the weft thread passes through the inclined opening.

The rapier band 12 has a structure in which carbon fibers are stacked in multiple layers, for example. Power transmission gears 14 are arranged in rows on the circumferential surface of the repetition wheel 13 which winds up the repetitive band 12, and the power receiving hole 15 is arranged in the repetitive band 12 by heat. It is installed. The power transmission gear 14 is engaged with the power receiving hole 15 in the range E, which is wound on the circumferential surface of the rapier wheel 13 which winds the rapier band 12, and the rapier wheel 13 The reciprocating rotational motion of) is transmitted to the rapier band 12 through the power transmission gear 14 and the power receiving hole 15.

The support shaft 131 is supported on the support plate 16, and a pair of position regulating rollers 17 and 18 are rotatably supported by the support plate 16. The position regulating roller 17 has the rare band 12 near one boundary K1 between the range E which is rolled up and the range H which is not rolled up. Is touching. The position regulating roller 18 is in contact with the rare band 12 near the other boundary K2 between the range E to be rolled up and the range H to be rolled up. The position regulating rollers 17 and 18 as regulators regulate the rare band 12 with respect to the circumferential surface of the rare wheel 13 near the boundaries K1 and K2.

The belt 27 is wound around the position regulating rollers 17 and 18. The belt 27 is wound around the tension roller 28 and the rapier wheel 13, and the rotation of the rapier wheel 13 is transmitted to the position regulating rollers 17 and 18 via the belt 27. By this rotation transfer, the position regulating rollers 17 and 18 are rotationally driven in synchronization with the movement of the rare band 12.

As shown in FIG. 2, the evacuation grooves 171, 181 are formed in the peripheral surface of the position regulating rollers 17, 18 for regulating the rare band 12 with respect to the peripheral surface of the rare wheel 13. . The gear tip 141 of the power transmission gear 14 protruding from the power receiving hole 15 of the rapier band 12 is configured to enter the evacuation grooves 171 and 181.

The support plate 16 is arrange | positioned so that it may correspond with the range E to which the support bracket 29 winds. As shown in FIG. 2, the pair of limit switches 19 and 20 are attached to the support bracket 29. As shown in FIG. The detection rollers 192 and 202 are attached to the front end of the detection needles 191 and 201 of the limit switches 19 and 20. The detection roller 192 is adjacent to the rapier band 12 at the right side of the row of the power receiving holes 15 of the rapier band 12 in FIG. 2, and the detection roller 202 is shown in FIG. 2. The left side of the row of the power receiving hole 15 is adjacent to the rapier band 12. The detection areas of the limit switches 19 and 20 are close to the traveling path of the rare band 12 in the range E that is wound.

The limit switches 19 and 20 are usually in an off state. When the limit switches 19 and 20 are turned on, this on signal is sent to the controller 21. The controller 21 operates the alarm device 22 based on the input of the ON signals from the limit switches 19 and 20, and stops the operation of the direct drive motor M.

In the first embodiment, the following effects are obtained.

(1-1) In FIG. 1, the surface layer of the lamination band 12 of a laminated structure was peeled. The travel path of the peeling piece 121 deviates from the original travel path of the rapier band 12. Peeling of the surface layer of the rapier band 12 occurs at the left and right of the heat of the power receiving hole 15, and the limiting portion, which is a traveling position abnormality detecting means, is caused by the peeling piece 121 contacting either of the detection rollers 192 and 202. The switch 19 or the limit switch 20 detects the peeling piece 121 deviating from the original traveling path of the rapier band 12. When peeling advances and the peeling piece 121 becomes long, the inclination will be damaged, but the limit switches 19 and 20 will detect generation | occurrence | production of the peeling piece 121 between the peeling pieces 121 group short. Therefore, the damage of the inclination by the peeling piece 121 is prevented.

(1-2) The peeling piece 121 is influenced by the centrifugal force in the range E that is rolled up. Therefore, the peeling piece 121 is more floated on the surface of the piercing band 12 than in the case of the straight path other than the range E which is wound up in the range E which winds up. Therefore, the installation position of the limit switches 19 and 20 corresponding to the range E to be wound is preferable as a detection position of the peeling piece 121.

(1-3) When the power receiving hole 15 of the rapier band 12 is worn, the coupling between the power transmission gear 14 and the power receiving hole 15 becomes smooth. In such a loose state of engagement, the leprechaun is lifted from the circumferential surface of the heire wheel 13 by centrifugal force in the range E in which the leprechaun band 12 is wound. The running route of this floating portion deviates from the original running route of the rapier band 12. That is, the rise of the rapier band 12 in the rolled-up range E reflects the wear of the power receiving hole 15. The limit switches 19 and 20 detect floating portions from the original running path of the rapier band 12, and wear of the power receiving hole 15 is detected. The method of indirectly detecting the wear of the power receiving hole 15 by detecting the injuries of the rapier band 12 prevents the wear of the power receiving hole 15 moving at high speed in Japanese Patent Laid-Open No. 4-34044. It is constitutively simple compared to the direct detection method.

(1-4) The rapier wheel 13 is reciprocally rotated, and the rapier band 11 fixedly mounted at the tip of the rapier band 12 is accelerated and decelerated. Therefore, the repetitive band 12 is wound around the boundary K1 on the side where the repetitive band 11 is located due to the inertial mass of the repetitive band 11 at the time of accelerating and decelerating the repetitive band 11. It is easy to float to the range (E) side. Therefore, the position of the range E which is wound closer to the boundary K1 on the side where the piercing band 11 is located than the boundary K2 on the side without the piercing band 11 is the limit switches 19 and 20. Is preferable as an arrangement position.

(1-5) The limit switches 19 and 20 which are on-off conversion sensors are preferable as detecting the presence or absence of the rare band 12 in the place which diverged from the original running route.

Next, the second embodiment of FIG. 3 will be described. The same components as in the first embodiment are denoted by the same reference numerals.

In this embodiment, a thin wire conducting wire 23 serving as an abnormality in the traveling position detecting means is provided so as to traverse close to the rapier band 12. If a peeling piece is generated in the rapier band 12, or if the rapier band 12 floats from the circumferential surface of the rapier wheel 13, the rapier band 12 and the conductive wire 23 come into contact with each other to form the conductive wire 23. This is to be cut off. When weaving, a current flows through the conductive wire 23. When the weaving wire 23 is broken during the weaving, and the current does not flow through the conductive wire 23, the controller 21 operates the alarm device 22 and at the same time operates a straight line. Stop the motor M.

Also in this embodiment, the same effects as in (1-1) to (1-4) in the first embodiment can be obtained.

Next, the third embodiment of FIG. 4 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.

In this embodiment, the photoelectric sensor 24 composed of the light projector 241 and the light receiver 242 is used as the travel position abnormality detecting means. The light transmission path of the photoelectric sensor 24 is set to traverse in close proximity to the rapier band 12. When the peeling piece arises in the piercing band 12, or the piercing band 12 rises from the circumferential surface of the piercing wheel 13, the said light transmission path is interrupted | blocked. When the light emission path is blocked, the controller 21 operates the alarm device 22 and stops the direct drive motor M at the same time.

Also in this embodiment, the same effects as in (1-1) to (1-4) in the first embodiment can be obtained.

Next, the fourth embodiment of FIG. 5 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.

In this embodiment, a pair of limit switches 25 and 26 are provided along the circumferential surface of the rare band 13. One limit switch 25 is provided at a position close to the diameter K1 in the range E that is wound, and the other limit switch 26 is a boundary K2 within the range E that is wound. It is located at a location close to. Detection rollers 252, 262 are attached to the ends of the detection needles 251, 261 of the limit switches 25, 26. The detection rollers 252 and 262 are arrange | positioned so that a crossing with the rapier band 12 may be carried out. The limit switch 25 or the limit switch 26 is turned on when the levitating band 12 rises or the peeling piece 121 occurs due to the wear of the power receiving hole 15. The controller 21 operates the alarm device 22 based on the input of the on signal from the limit switches 25 and 26 and stops the loom driving motor M at the same time.

The arrangement in which the limit switches 25 and 26 are arranged in the range E that is rolled up prevents the occurrence of the peeling piece 121 at the site of the rapier band 12 that is rolled up in the range E that is rolled up. It is effective to detect everything.

As described above, in the present invention, since the detection area of the travel position abnormality detecting means is brought close to the running path of the repair band, the surface peeling of the repair band is excellent.

In the invention in which the detection area of the traveling position abnormality detection means is rolled over, it has an excellent effect of detecting any of the surface layer peeling of the rare band and the wear of the power receiving hole.

Claims (4)

The rapier loom which inserts the rapier band 11 fixedly mounted on the rapier band 12 wound around the rapier wheel 13 into the inclined opening, and evacuates in the inclined opening to weft the weft yarn. In the abnormality detection device in the weft filling device, The traveling position abnormality detecting means 19 which detects the abnormality of the traveling position of the said referee band 12 is arrange | positioned, and the detection area of the said traveling position abnormality detection means 19 is traveling of the said rare band 12 Abnormality detection apparatus in the wefting device of the piercing loom which approached the path | route. 2. The traveling position abnormality detecting means (19) according to claim 1, characterized in that the traveling position abnormality detecting means (19) is disposed at a position corresponding to a range (E) in which the rare band (12) is wound around the rare wheel (13). An abnormality detection apparatus in the wefting device of the repier loom. 3. The boundary vicinity K1 according to claim 2, wherein the winding range (E) and the non-rolling range (H) that do not wind the repetition band 12 on the repetition wheel 13 are applied. K2) is provided with regulators 17 and 18 for regulating the repetition band 12 with respect to the circumferential surface of the repetition wheel 13, and the traveling position abnormality detecting means 19 includes the repetition. The abnormality detection apparatus in the weft lapping apparatus of the rapier loom arrange | positioned at the position closer to the said boundary (K1) of the side with the said repair band (11) than the said boundary (K2) of the side without a band (11). 4. The abnormality detecting device according to any one of claims 1 to 3, wherein said traveling position abnormality detecting means is a limit switch (19).