JPH03180541A - Interlock device of rapier loom - Google Patents

Abstract

PURPOSE:To improve safeness of loom operation by outputting signal for inhibiting independent actuation to each of main motor when rapier is in region of reed action based on detection signal of rapier position and mechanical angle and to each of rapier motor when the reed does not exist in retreating position. CONSTITUTION:Rapier loom provided with a private motor of rapier driving is constituted so as to output interlock signal for inhibiting independent actuation of main motor of loom when the rapier exists in action region area of reed based on rapier position detecting signal for detecting position of rapier so as to output interlock signal for inhibiting independent actuation of the above-mentioned rapier driving motor when a reed does not exist at least in retreating position based on a mechanical angle detecting signal of loom to suppress occurrence of mechanical damage and breakage of warp by intercross of rapier with reed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an interlock device for a rapier loom in which a rapier is driven by a dedicated rapier motor.

Conventional technology Rapier looms use a mechanical means called a rapier to insert the weft, so the weft insertion operation is reliable, and it has been used for a long time, especially for weaving thick woven fabrics using large-count threads. It is used for awards.

Generally, a rapier is connected to the main shaft through a suitable drive mechanism and driven in conjunction with the main motor, but a dedicated rapier motor separate from the main motor is provided, and independent drive control is performed using this. It has also been proposed (for example, Japanese Patent Laid-Open No. 106865/1983). According to this, there is no need to prepare a complicated and exaggerated rapier drive mechanism, so it is possible to easily increase the speed of the entire loom, and it is also possible to separate the movement of the rapier from the reed, heddle, etc. at any time. Therefore, when the loom is stopped due to faulty weft insertion or warp breakage, the four-motion operation of each part can be performed individually to repair the failure, which has the advantage of making the recovery operation extremely simple.

In addition, in such rapier looms as well as in general looms, it is necessary that the rapier and the reeds, healds, etc. move in a strictly synchronized relationship during steady operation. The rapier motor must be controlled via a rapier motor drive control unit that inputs the mechanical angle of the loom as a command signal so as to drive the rapier according to a predetermined movement pattern corresponding to the mechanical angle of the loom.

Problems to be Solved by the Invention According to the prior art, the rapier motor has the following problems:
During steady operation, the rapier is driven and controlled according to a predetermined movement pattern that follows the mechanical angle of the loom.
A predetermined synchronization relationship is maintained between the reed and heddles, but when the loom is stopped, the rapier motor may be driven independently, which may break this synchronization relationship and lead to a major fatal accident. There is. In other words, if the rapier advances with the warp threads closed, there is a possibility that all the warp threads will break, and if the reed moves while the rapier advances, the reed and rapier will intersect, causing both to become mechanically damaged. This is because there is a possibility that it may be damaged.

Therefore, in view of the actual state of the prior art, when the rapier advances into the operating range of the reed, or at least when the reed advances and is not in the retreat position, the main motor To provide an ink lock device for a rapier loom, which can reliably prevent the possibility of a major accident occurring due to breakdown of the synchronized relationship between the rapier and the reed or heddle by prohibiting the independent starting of the rapier motor. There is a particular thing.

Means for Solving the Problems The structure of the first invention according to this application for achieving the above object includes rapier position detection means for detecting the position of a rapier driven by a rapier motor, and a rapier position signal from the rapier position detection means. and an interlock signal generator that prohibits the main motor from starting independently when the rapier moves into the operating range of the reed.
The configuration of the second invention includes a mechanical angle detecting means for detecting the mechanical angle of the loom, and a mechanical angle signal from the mechanical angle detecting means is input, and at least when the reed is not in the backward position, independent activation of the rapier motor is prohibited. The gist thereof is to include an interlock signal generator.

The gist of the configuration of the third invention is to combine the first and second inventions.

According to the configuration of the first invention, the main motor is prohibited from starting independently when the rapier is advanced into the operating range of the reed, and therefore, the reed is not in motion while the rapier is advanced. Therefore, the risk of damaging the rapier or reed can be effectively prevented.

According to the configuration of the second aspect of the invention, the rapier motor is prohibited from starting independently when the mechanical angle of the loom is within a predetermined range and at least when the reed is advanced and not in the retracted position.

Therefore, the rapier is allowed to advance only when the reed has retreated to a predetermined retreat position, and therefore, the advance of the rapier may cause warp threads to break or
There is no risk of confusion with the reed. Generally, when the reed is in the retracted position, the warp threads are also open so that the rapier can be inserted.

According to the third invention, since both the functions of the first and second inventions are ensured, it is possible to achieve a high level of safety. However, in this case, both the main motor and the rapier motor may be prohibited from starting independently, but in that case, the independent starting of the rapier motor will be allowed as an exception, and the rapier will be moved out of the operating range of the reed. It is preferable to cancel the prohibition of independent starting of the main motor by doing so.

Example Examples will be described below with reference to the drawings.

The interlock device of the rapier loom is located at the position R of the rapier RP.
The rapier RP comprises, for example, a rapier position detecting means 11 that detects A band rapier having a rapier head RPI at its tip and a driving sprocket RP.
2 by a rapier motor M1. The position Rx of the rapier RP is taken in the direction of the reed from the origin Ro, which is the most retracted position of the rapier head RPI.

In the range of ≦Rx≦R1, the guide is guided by a fixed guide RPgl, and in the range of Rx > R1, the guide is guided by a guide RPg2 on a sleigh (not shown). However, R1 is the end face position of the loom frame (not shown) on the woven fabric side, and when Rx > R1, it indicates that the rapier RP has advanced into the operating area of the reed, and when Rx≦RL, it indicates that the rapier RP has advanced into the reed's operating area. Indicates that the object has moved out of the operating area.

The rapier motor Ml is driven by the output of the rapier motor drive control section 13. A pulse generator PG for detecting the amount of rotation is directly connected to the rapier motor M1, and the output of the pulse generator PG is transmitted to the rapier motor drive control section 13.
feedback has been provided. The rapier motor drive control unit 13 receives the mechanical angle θ of the loom from the mechanical angle detection means 21 manually, and during steady operation of the loom, the rapier motor drive control unit 13 uses the mechanical angle θ as a command signal to control the rapier RP. It is assumed that the rapier motor M1 is driven and controlled so that the position Rx follows a predetermined pattern Rx=f(θ).

The rapier motor drive control unit 13 is further supplied with an operation switch PS1 for independently starting the rapier motor Ml while the loom is stopped, and the operation switch PS1 is connected to an auxiliary relay X2 driven by an interlock signal generator 22.
A normally closed contact X2b is interposed in series.

The rapier position detection means 11 includes a large number of sensors S, S.
The output of ... is connected. Sensor SSS... is
Arranged along guides RPgl and RPg2, Rx =
It includes a sensor Sr corresponding to the position of R1. Sensor SSS
. . . is assumed to operate by detecting the rapier head RPI that moves while being guided by the guides RPgl and RPg2. Therefore, the rapier position detection means 11 uses the sensor SSS.
. . is in operation, the position Rx of the rapier RP can be detected and output as the rapier position signal 311 to the interrotator signal generator 12.

An auxiliary relay X1 is connected to the interlock signal generator 12.

The mechanical angle detection means 21 receives the output of an encoder EN connected to the main shaft MS of the loom.

It is assumed that the main shaft MS is driven by the main motor M2, and that the reed and the healds (not shown) are driven by the main shaft MS.

The mechanical angle detection means 21 processes the output of the encoder EN to detect the mechanical angle θ of the loom, and outputs it as a mechanical angle signal S21.
It is output to the interlock signal generator 22 and the rapier motor drive control section 13. The above-mentioned auxiliary relay X2 is connected to the interlock signal generator 22.

The main motor M2 is driven by the main motor drive control section 23. The main motor drive control unit 23 is connected to an operation switch PS2 for independently starting the main motor M2 when the loom is stopped, and the normally closed contact X1b of the aforementioned auxiliary relay XI is connected in series to the operation switch PS2. has been done.

It is assumed that the starting direction of the rapier motor Ml and the main motor M2 when operating the operation switch Psi 5PS2 is switched by a selection switch (not shown) built in the rapier motor drive control section 13 and the main motor drive control section 23.

During steady operation, mechanical angle θ, warp shedding MPX by healds (not shown), reed movement Lx, rapier RP
The relationship between Rx and the position Rx=f(θ) is generally illustrated in FIG. In other words, if the mechanical angle θ at which the reed moves forward to the weaving position L1 and beats the reed is set to θ=0 (degrees), the reed moves to the retreat position Lo when θ1≦θ≦θ2.
At this time, the guide R on the loom frame
gl and guide Rg2 on the slay are in a straight line,
The rapier RP can move into the operating area of the reed. However, 01″, 70 (degree), θ2″.

It is 290 (degrees).

The rapier RP has Rx > R1 when θl<θ<θ2, and takes its maximum value Rx=R2 at θ=012=01+(θ2−01)/2ξ180 (degrees).

However, R2 is the maximum advancing length of the rapier RP,
In the case of a single-sided rapier that inserts the weft from only one side of the woven fabric, the opposite end of the woven fabric is shown; in the case of a double-sided rapier that inserts the weft from both sides of the woven fabric with a pair of opposing rapiers, the It shall indicate the middle position of the cloth. In the case of a double-sided rapier, it is assumed that the rapier RP and its associated members shown in FIG. 1 are arranged symmetrically with a pair of other members other than those shown in the drawings interposed therebetween.

The opening NPx is completely closed at θ=θ3 and becomes Px=
0 (%), and is completely opened when θ4≦θ≦05, and Px=100 (%).

In the range of θ<360 (degrees) and θ<4, the heald is in the middle of shedding movement. However, θ3ξ300 (degrees), 04″, 40 (degrees), 05″.

It is 200 (degrees). At θ=02, Px=bξ
0 (%), but in this case, it is assumed that the rapier RP can move through the shedding without damaging the warp threads.

Next, considering when the loom is stopped, since the healds and reeds are linked to the main shaft MS, the opening amount PX%, the amount of movement of the reeds L
Even when the loom is stopped, x changes while maintaining the relationship shown in FIG. 2 when the main motor M2 is started independently by the operation switch PS2. On the other hand, the rapier RP can be driven separately from the main shaft MS by independently starting the rapier motor M1 using the operation switch PSl.

The rapier RP has a sufficiently large opening amount PX, the reed is in the retreat position LO, and the guides RPgl, RPg2
Since it is possible to advance into the operating range of the reed only when the reed is in a straight line, as the interlock signal generator 22,
When the mechanical angle θ is θ2<θ, θ<θ1, the auxiliary relay
By driving the rapier motor M1 and prohibiting independent activation of the rapier motor M1, there is no possibility that the rapier RP will mechanically intersect with the reed etc. (solid line indicated by symbol X2 in FIG. 2). θ1≦θ
≦02, the reed is in the retreat position Lo, and the opening amount Px is Px≧b, so that the rapier RP can advance into the operation area of the reed without damaging the warp threads. In other words, the interlock signal generator 22 is activated when the reed moves forward and is not at the retreat position Lo, that is, when Lx≠
Auxiliary relay X within the range of mechanical angle θ corresponding to Lo
2 and prohibits independent activation of the rapier motor Ml.

On the other hand, the main motor M2 should be prohibited from starting independently when the rapier RP has advanced into the reed operation area. Therefore, as the interlock signal generator 12, Rx
> R1, it is sufficient if it drives the auxiliary relay XI (solid line labeled X1 in FIG. 2).

Other embodiments Operation switch P input to rapier motor drive control section 13
A parallel circuit including a normally closed contact X2b of the auxiliary relay X2 and a series circuit of the normally open contacts X1 as X2a of the auxiliary relays XI and X2 may be interposed in S1 (FIG. 3).

When starting the rapier motor M1 independently and advancing the rapier RP into the operating range of the reed, there may be cases where it is desired to leave a sufficient margin for the opening amount Px, such that Px > a (however, b a < 100 (%)). (Figure 2). In this case, the mechanical angle θ corresponding to Px=a is θ=06 (however, θ1 × θB × θ2
), the ink clock signal generator 12.22 causes a section in which both auxiliary relays X1 and X2 operate simultaneously (dotted line labeled X2 in Fig. 2), and both main motor M2 and rapier motor Ml are started independently. In this case, the normally open contacts X1aSX2a of the auxiliary relays X1 and X2 close, so that the rapier motor M
1 can be started independently as an exception, so first, Rapier R
P can be withdrawn to Rx < R1, after which the main motor M2 can be allowed to start independently.

The interlock signal generator 12 controls the position Rx of the rapier RP.
It is only necessary to operate the auxiliary relay X1 when Rx>R1 and prohibit the independent activation of the main motor M2. Therefore, various modifications may be made to the interlock signal generator 12, the rapier position detection means 11 that supplies the rapier position signal 311 to the interlock signal generator 12, and the sensor S1S. For example, instead of sensor SSS..., rapier motor M1
The output of the pulse generator PG directly connected to the rapier motor M1 can be used, and in this case, the pulse generator PG can calculate the rotation amount of the rapier motor M1 from the rotation amount of the rapier motor M1 by itself or by using it in conjunction with other sensors. It is only necessary to be able to detect the absolute value of the position Rx.

Also, among the sensors SSS..., only the sensor Sr corresponding to Rx-R1 is used, and as this sensor Sr, a sensor sensitive not only to the rapier head RPI but also to the entire rapier RP, such as a photoelectric sensor, is used. Then, since the sensor Sr is operating, it is possible to directly detect Rx>R1.

The operation switch PS1 is turned into the forward rotation operation switch PS1a.

Separated into reverse operation switch PS1b, rapier motor M1
When the selection switch for selecting the starting direction is omitted, the normally closed contact X2b of the auxiliary relay
It is sufficient to insert it in both S1a and reverse operation switch PS1b (FIG. 4). This also applies to the operation switch PS2 that independently starts the main motor M1.

Further, when the auxiliary relays X1 and X2 operate simultaneously, the rapier motor M1 can exceptionally be allowed to start independently only in the reverse direction (FIG. 5). Generally, when the rapier RP has an insufficient shedding IPχ, the warp threads are likely to be damaged when the rapier RP is advanced into the shedding, but the warp threads are less likely to be damaged when being pulled out from the shedding.

Therefore, when the opening ff1b<Px<a is insufficient, only the reverse start of the rapier motor M1 is allowed, and the rapier RP is
can be moved out of the operating range of the reed, that is, Rx<R1.

In addition, even when the loom is stopped, the rapier motor M1 follows the mechanical angle θ of the loom to maintain the relative relationship shown in FIG.
It is also possible to move the main motor M2 four times. At this time, a synchronous four-motion switch (not shown) separate from the operation switch PS2 is provided, and this is manually operated by the main motor drive control unit 23 to move the main motor M2 four times, and the rapier motor M1 is operated in the same manner as during steady operation. , mechanical angle θ may be used as a command signal to control the drive via the rapier motor drive control section 13. In this case, auxiliary relays XI and X2 do not have any special effect.

On the other hand, while the loom is stopped, the rapier motor M1, as mentioned above,
If the main motor M2 is started independently and alone, the predetermined synchronous relationship between the two will be lost. Therefore, when restarting the loom next time, as a preparatory step, it is necessary to first restore the synchronous relationship between the two to the one during steady operation. Although this process can be performed manually using the operating switches Psi and PS2, it is not difficult to automate it by preparing a suitable preparatory circuit. For example, first, the rapier motor M1 is driven to move the rapier RP to Rx =
Then, the main shaft M is moved through the main motor M2 so that the mechanical angle θ corresponds to Rx=R3.
Just set S. However, R3 is the position of the rapier RP that corresponds to the optimum starting mechanical angle θ=07 for restarting the loom, and at this time, Rx
In order to uniquely determine the mechanical angle θ=07 for =R3, the rapier RP preferably realizes Rx =R3 from either the normal rotation direction or the reverse rotation direction of the rapier motor Ml.

In the above explanation, the rapier motor M1, the main motor M2
When only one of the looms needs to be started independently while the loom is stopped,
Detection means 11 and ink clock signal generator 12, respectively.
It is sufficient to consider two sets of rapier loom interlock devices each including a mechanical angle detection means 21 and an interlock signal generator 22, and use only one of them as necessary.

As described in detail, according to the first invention of this application, the rapier position detection means and the interlock signal generator are provided, and when the rapier advances into the operating area of the reed, By prohibiting the main motor from starting independently, the reed does not move while the rapier advances, which is an advantage in that mechanical damage caused by the rapier and the reed intersecting can be reliably prevented. It has a positive effect.

According to the second invention, by providing the mechanical angle detection means and the interlock signal generator, independent activation of the rapier motor is prohibited at least when the reed is not in the retracted position. There is no risk of damage,
Furthermore, it is possible to effectively prevent the risk of breaking the warp threads due to advancement of the rapier.

According to the third invention, by combining the first invention and the second invention, the functions of both can be realized together, so that it is possible to realize a higher level of safety.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 show an embodiment, with FIG. 1 being an explanatory diagram of the overall system, and FIG. 2 being an explanatory diagram of the operation. 3 to 5 are main part system diagrams showing different embodiments, respectively. RP... Rapier Rx... Position L... Reed θ... Mechanical angle Ml... Rapier motor M2... Main motor 311... Rapier position signal S21... Mechanical angle signal 11... Rapier position detection means 21...Mechanical angle detection means

Claims (1)

[Claims] 1) A rapier position detection means for detecting the position of a rapier driven by a rapier motor, and a rapier position signal from the rapier position detection means is input, and the rapier advances into the operating area of the reed. An interlock device for a rapier loom, comprising an interlock signal generator that prohibits independent starting of a main motor when 2) Mechanical angle detection means for detecting the mechanical angle of the loom, and input of the mechanical angle signal from the mechanical angle detection means to generate an interlock signal that prohibits independent starting of the rapier motor at least when the reed is not in the backward position. An interlock device for a rapier loom, which is equipped with a device. 3) An interlock device for a rapier loom, which is a combination of the interlock devices for a rapier loom according to claims 1 and 2.