JPH04146242A - Motor-driven feeding device of loom - Google Patents

Abstract

PURPOSE:To maintain the accurate feeding amount of warps and improve the life of a feeding motor by reducing the rotation rate of the feeding motor independent from a main motor to a continuous feeding rotation rate corresponding to a winding.stopping pattern during the intermittent winding rotation of a cross roller. CONSTITUTION:In a loom capable of changing the density of a woven weft by intermittently rotating a cross roller at a rate of one winding operation/ several picks, a feeding motor 25 independent from a main motor 1 is driven to feed the warps Y of a feeding beam 21, and the warps are woven through a dobby device 10. In the process, whether the motors are intermittently rotated in accordance to winding and stopping signals outputted on the information of a paper curd 13 and corresponding to the intermittent winding rotation or not is judged, and while a woven fabric is wound up on a cross roller 5 through a surface roller 2, the rotation rate of the feeding motor 25 is reduced to a continuous feeding rotation number corresponding to a pattern of the above- mentioned intermittent winding. When the intermittent winding operation is finished, the feeding motor is controlled so as to return to an ordinary operation.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention has a structure (so-called border) in which the weft density is increased by winding the woven fabric once in response to multiple picks. Concerning a loom designed to obtain

BACKGROUND OF THE INVENTION Conventionally, in the above-mentioned loom, the power transmission system between one main motor, the cross rollers and the delivery beam is connected by a shedding device such as a dobby through a mechanical connection means such as a link. With a mechanical clutch, 2
When the winding was stopped by engaging and disengaging two clutches, the feeding was also stopped at the same time. When increasing the weft density using such a mechanism, for example, one pick per two picks is used.
The pattern of intermittent winding rotation was repeated several times.

Problems to be Solved by the Invention However, in a loom that has a delivery motor that actively rotates the delivery beam separately from the main motor, it is necessary to adjust the delivery motor to take up and stop during intermittent take-up rotation, as in conventional mechanical looms. When controlled, the delivery motor frequently turns ON and OFF, which shortens the life of the motor, and frequent gear changes also generate noise due to the noise of the reduction gear between the delivery motor and the delivery beam. There is. Furthermore, if the machine is not stopped or started within a short period of time, the amount of warp threads sent out becomes unstable, but it is difficult to make the delivery motor accurately follow such stops and starts, and there is also the problem of delayed response.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention allows a plurality of picks to perform one intermittent take-up rotation, and in a loom where the weft density can be changed, the weft thread is sent out independently of the main motor. a variable speed delivery motor for actively sending out warp yarns by driving a beam; and means for outputting a winding stop signal corresponding to the intermittent winding rotation.

Means for determining whether or not intermittent winding rotation is in progress based on a winding stop signal; and means for determining whether or not intermittent winding rotation is being performed; The invention is characterized by comprising means for outputting a command to decelerate in number.

According to the above configuration, the start and end of the intermittent winding rotation is determined based on the winding stop signal corresponding to the intermittent winding rotation of the winding beam, and the sending beam is The delivery motor that rotates is decelerated from the steady rotation speed at that time to the continuous delivery rotation speed corresponding to the intermittent winding rotation.

Embodiment In FIG. 1, a main motor 1 and a surface roller 2
A mechanical clutch 4 is interposed in the drive transmission path 3 between the vehicle and the vehicle. The surface roller 2 rotates with the clutch 4 connected, and the cloth C is wound around the cross roller 5.
When the clutch 4 is disengaged, the surface roller 2 stops rotating and the cloth C is not fed, so the cross roller 5 stops winding.

The clutch 4 is controlled on and off by a well-known dobby device 10, which is exemplified as an opening device. The dobby device 10 has a frame 11
It is provided with a large number of jack levers 12 which are connected to and can be moved up and down. It is well known that the vertical movement of these jack levers 12 is controlled by perforated paper cards 13 to weave a fabric of a predetermined structure. One of the jack levers 12 is not connected to the frame 11.

This jack lever 12 and the clutch 4 are connected by a shifter 14 consisting of a link or the like, and the clutch 4 is engaged or disconnected by vertical movement of the jack lever 12, so that intermittent winding rotation of the surface roller 2 is performed. For the paper card 13.

This embodiment includes data for moving the jack lever 12 connected to the clutch 4 up and down so as to repeat seven cycles of one winding operation with two picks during weaving, as shown in FIG. The main motor 1 is connected to the machine control device 15
The ON signal is transmitted as a machine operation signal a to a delivery control device 30 of a delivery motor 25, which will be described later.

Next, in the delivery device 20 for the warp Y, the delivery beam 21
A gear 22 and a gear 23, which are integral with each other, mesh with each other. This gear 23 is linked to a reduction gear train 24.

This reduction gear train 24 is connected to a delivery motor 25 which is a servo motor and is capable of forward and reverse rotation and variable speed. This delivery motor 25 is controlled by a delivery control device 30.

This feed-out control device 3o uses a known microcomputer, and in addition to the feed-out control flowchart shown in FIG. The steady rotation speed during steady continuous winding rotation without intermittent winding rotation (these are set to a number of appropriate values corresponding to the diameter of the sending beam 21), and the number given by the paper card 13. A storage unit 31 that stores one cycle of winding and stopping patterns (T shown in FIG. 4). and a calculation section 32 that performs various calculation processes according to the flowcharts. An input device 33 for inputting the two types of rotational speed of the delivery motor 25 and the pattern is connected to the delivery control device 30, and is arranged in close proximity to the clutch 4 to detect engagement and disengagement of the clutch 4. A proximity switch 34 outputs a winding stop signal corresponding to the intermittent winding rotation of the surface roller 2.
is electrically connected. The continuous delivery rotation speed of the delivery motor 25 inputted from the input bag [33] is calculated by dividing the steady rotation speed V corresponding to the diameter of each delivery beam 21 by the number of kicks during one period T of the winding and stopping pattern. Set it to the specified value. In this embodiment, since one winding is performed with two picks, the rotational speed is 1/2 of the steady rotational speed (2) at that time. Furthermore, the tension detection value C from the warp tension detection device 40 is inputted to this delivery control device 30. Warp tension detection device 4
0 is a bracket 42 fixed to the left and right frames 41 of the loom
A bearing block 43 is fitted in a vertically slidable manner.

A support shaft 44 is rotatably suspended horizontally between the left and right bearing blocks 43, and intermediate portions of tension levers 45 are integrally connected to both ends of the support shaft 44, respectively. A back roller 46 is rotatably supported at the tip of the tension lever 45, and a shock absorber 47 is connected to the frame 41 at the other end to prevent the back roller 46 from wobbling during reshaping. A tension rod 48 whose one end is pivoted to the frame 41 is disposed between the shock absorber 47 and the bearing block 43 and passes through the tension lever 45.
A tension spring 49 that urges the tension lever 45 downward is interposed between them. The bearing block 4
A pressure detector 50 is disposed below 3, and detects the warp tension applied to the back roller 46 and the shock absorber 47.
The resultant force generated by the tension spring 49 and the tension spring 49 is applied to the pressure sensor 50. Even if there is a manufacturing error in the tension spring 49 and the spring constant is slightly different, the spring force of the tension spring 49 caused by the tension is the same, so the pressure detector 50 will correctly detect the warp thread tension. . In addition to the flowchart described above, the delivery control device 30 also has a control function that compares the input warp tension with a preset target value and corrects the warp tension.

The operation of such a configuration will be explained with reference to the flowchart of FIG. 3 and the operational diagram of FIG. 4.

Machine control system! A driving command is given to the main motor 1 from the main motor 15. Then, the machine operating signal a is input to the sending device 30. Since the machine operation signal a is input in step 2 in FIG. issue an order to do so. As a result, the sending motor 25 is rotated at a steady rotation speed V corresponding to the sending beam diameter at that time.
Rotate with. On the other hand, at this time, assuming that the clutch 4 is not disengaged by the dobby device 110, the surface roller 2 also rotates continuously, and the warp yarn Y sent out from the sending beam 21 is opened by the dobby device 1i10 from the back roller 46, and the weft yarn is put in. The cloth C is woven after being punched, and the finished cloth C is continuously wound up from the press roller to the surface roller 2 to the cross roller 5.During the weaving process, a dobby Device 1o
When the jack lever 12 connected to the clutch 4 moves upward, the clutch 4 is disengaged and the surface roller 2 stops rotating. The proximity switch 34 detects that the clutch 4 is disengaged and outputs a winding stop signal. Then, in step ■, a winding stop signal is input to determine the start of the intermittent winding operation.Next, in step ■, there is a machine operation signal, so the process advances to step ■, where a number of continuous feed rotations stored in advance are performed. A command to decelerate to a value corresponding to the diameter of the emitted beam at that time is output from several V/2. In response to this command, the delivery motor 25 continuously rotates at a continuous delivery rotation speed of V/2. With the clutch 4 disengaged, one-bit reshaping is performed, and when the crankshaft (not shown) rotates once, the jacking lever 12 is lowered, the clutch 4 is engaged, the surface roller 2 performs winding, and the proximity switch 34 is activated. Does not output winding stop signal. In this way, the winding operation of the surface roller 2 is performed intermittently for each pick, and each time the winding and stopping pattern ends one period T, the winding operation is compared with a stored pattern. and 14
Since the patterns do not match when a pick appears, it is determined in step (2) that the intermittent winding operation has ended, and the rotation speed returns to the steady rotation speed (2) corresponding to the diameter of the sending beam 21 at that time. In this flowchart, steps (2) and (2) constitute a means for determining whether or not intermittent winding rotation is in progress, and step (2) constitutes a means for outputting a command to decelerate the speed to a continuous delivery rotation speed corresponding to the intermittent winding rotation. There is.

In this way, the surface roller 2 decelerates to the continuous delivery rotation speed at the start of intermittent winding, rotates continuously at that speed until the end of intermittent winding, and returns to the steady rotation speed at the end of intermittent winding, so the delivery amount is accurate. Moreover, since the number of gear changes is only two, the life of the delivery motor 25 is extended, and gear noise caused by gear changes in the reduction gear train 24 is also reduced.

Next, in FIG. 5, another example of the flowchart in the delivery control device 30 is shown. Instead of inputting it to the section 31, the pattern of the winding stop signal that detects the intermittent winding operation performed by the surface roller 2 is inputted by a program for one cycle (from the first rise of the winding stop signal to the second rise of the winding stop signal). ), count the number of picks during that time, and from the second cycle of the 1st winding stop signal, divide the number of consecutive rotations by the number of picks that corresponds to the diameter of the sending beam at that time. Steps ① and ① in Fig. 5), and this is output in step ②. When determining the continuous delivery rotation speed by calculation in this way, it is necessary to completely match the pattern of intermittent winding rotation of the paper card 13 and the corresponding continuous delivery rotation speed and store it in the memory in the delivery control device in advance. Compared to the first embodiment, this embodiment has the advantage of saving input time and effort.

Further, in this embodiment, even if several patterns of intermittent winding rotation are applied to the surface roller 2 by one paper card 13, this can be handled.

Effects of the Invention As described above, according to the device of the present invention, while the winding beam performs intermittent winding rotation, the sending motor that sends out the warp independently of the main motor controls the winding and stopping of the intermittent winding rotation. Since the speed of the feed motor is decelerated to the continuous speed according to the pattern and rotated continuously, the speed of the feed motor only changes at the start and end of intermittent winding. Compared to this, the motor life can be extended.

Moreover, since the sending motor is not turned on frequently and does not go to zero,
This prevents gear noise in the gearbox, leading to a reduction in noise. Furthermore, since the rotational speed of the delivery motor during intermittent winding is reduced to the continuous delivery rotational speed corresponding to one intermittent winding rotation, there is an advantage that the delivery amount during intermittent winding is accurate.

[Brief explanation of the drawing]

Fig. 1 is an overall view of a loom in which the device of the present invention is implemented, Fig. 2 is a parent diagram of Fig. 1, Fig. 3 is a control flowchart of the delivery motor, and Fig. 4 is the relationship between winding operation and delivery motor rotation speed. figure,
FIG. 5 shows another example. DESCRIPTION OF SYMBOLS 1... Main motor, 4... Clutch, 5... Cross roller, 21... Delivery beam, 25... Delivery motor, 30... Delivery control device, Y... Warp, C.
··cloth

Claims (1)

[Claims] 1. In addition to the steady continuous winding rotation of the cross rollers, multiple picks perform one intermittent winding rotation, and in a loom that can change the weft density, the warp yarn is driven by driving the delivery beam independently of the main motor. A variable speed sending motor that actively sends out data, means for outputting a winding stop signal corresponding to the intermittent winding rotation, and determining whether or not the intermittent winding rotation is being performed based on the winding stop signal. and means for outputting a command to reduce the rotational speed of the delivery motor to a continuous delivery rotational speed corresponding to the intermittent winding rotation while the intermittent winding is being performed. Electric delivery device.