KR970002561B1 - Device for detecting the position of a warp thread break - Google Patents

Abstract

None.

Description

Inclined cutting position detection device

1 is a front view of the inclined cutting position detection device.

2 is a plan view of the inclined cutting position detection device.

3 is a cross-sectional view of the main portion of the inclined cutting position detection device.

4 is an enlarged perspective view of the supporting portion of the wire with respect to the guide.

5 is a block diagram of a detection apparatus.

6 is an enlarged front view of the correspondence relationship between the pressure sensor of the guide and the wire rod.

7 is a block diagram of another embodiment of a detection apparatus.

8 is a block diagram of another embodiment of a detection apparatus.

9 is an enlarged front view of the correspondence relationship between the pressure sensor of the guide and the wire rod.

10 is a front view of the support form of the wire rod with respect to the guide of another embodiment.

* Explanation of symbols for main parts of the drawings

1: Inclined cutting detection device 2: Rotating body

3: slant clad member 4: wire rod

5: shaft 6: bearing

7: frame 8: motor

9: pulley 10: endless belt

11: iron 12: brush

13: tilt 14: holder

15: bolt 16: nut

17: guide 18: guide hole

19: pressure sensor 20: tilt cutting position detection device

21 detection device 22 amplifier

23: identification circuit 24: end gate (detection unit)

25: display circuit 26: Oagate

27: notch 28: comparison circuit (detection unit)

29: detection circuit (detection part) 30: contact piece

31: support

TECHNICAL FIELD This invention relates to a textile machine, ie, the apparatus for detecting the cutting position of an inclination on a loom.

For example, Japanese Unexamined Patent Application Publication No. 54-25511, Japanese Unexamined Patent Application Publication No. 54-12620, and the like disclose such a tilt cutting detection device. This inclination cut detection device forms a plurality of fastening members (brushes) on a rotating body (roller body) extending throughout the weaving width, and pulls and installs a wire rod (steel piece), and cuts the inclined cut with the rotating body. The wire member is brought into contact with the wire rod by hanging on the rotating member, and the switch of the wire end portion is operated through the wire rod by the tension of the inclination caused by the rotation of the rotating body. According to the above apparatus, it is possible to detect whether or not the inclination of cutting occurs, but the cutting position at that time is not particularly determined. Therefore, after stopping the loom, the worker must find the cut slope. For this reason, there exists a problem that the operation rate of a loom falls.

An object of the present invention is to provide an inclination cut detection device in which an inclined cut member is placed on an inclined locking member of a rotating body extending in the weave width direction and detects an inclination cut based on the tension of the cut inclination. It is possible to specify the cutting position of the inclination in the direction in sections, so that the inclination repair after the detection can be performed quickly.

In the above object, the present invention is an inclination cut detection device consisting of a rotating body having an inclined latch member in parallel in the weaving width direction, and a wire rod provided in the weaving width direction, a plurality of guides along the axial direction of the rotating body The front end of the guide is brought close to the wire rod, and the contact between the tip of the guide and the wire rod can be detected by the detection device for each of the two adjacent guides, and output as a position signal corresponding to the two guides. Doing.

As a result, when the inclined cut portion is caught by the inclined cladding member and contacts the wire rod, the two guides on both sides thereof contact the wire rod. Since it is detected, two guides can be specified, and accordingly, the inclined cut part can be determined as between two guides. Here, the detecting device comprises a means for detecting as a pressure signal from a pressure sensor provided at the tip of each guide, or a means for detecting an electric current value in the circuit by forming an electric closed circuit when the wire and the two guides contact each other. It is composed by.

Example 1

The first embodiment is shown in FIGS. 1 to 5, 6 and 7 and the detection unit is connected to a pressure sensor provided at the tip of the guide and a pressure sensor of two adjacent guides. This is an example composed of an AND gate and a display circuit. The pressure sensor is mounted inside the hole or notch formed in the guide, and generates a detection signal when the detection portion of the pressure sensor contacts the wire rod. By inputting the detection signals from two pressure sensors on both sides of the portion where the cut inclination abuts, the cut position of the inclination is detected in the interval unit of the two guides and is also displayed by the display circuit.

1 to 4, the inclination cut detection device 1 is assembled by the rotating body 2, the inclined latch member 3, and the wire rod 4. As shown in FIG. The rotating body 2 extends in the weaving width direction of a textile machine, for example, a loom, and is rotatably supported relative to a frame 7 such as a loom by the shaft 5 and the bearings 6 at both ends, and for driving. The motor 8, the pair of pulleys 9, and the endless belt 10 wound around them are configured to rotate in a predetermined direction. The rotating body 2 is provided below the inclination 13 between the seedling frame and the tension roll which are not shown in figure.

Incidentally, the inclined latch member 3 is provided along the axial direction with respect to the rotating body 2, and constitutes a plurality of hairpin-shaped iron pieces 110 and a brush 12 having a shorter length than the iron pieces 11. It is. The hairpin-shaped iron piece 11 is set to the length which can enter between the upper sheet-like inclination 13 at the time of rotation of the rotating body 2. As shown in FIG. The wire rod 4 is made of a conductive or non-conductive wire, and extends against the pair of holders 14 on the opposite side from the mounting position of the brush 12 with respect to the rotating body 2, The tension adjusting bolt 15 and the tension adjusting nut 16 are provided in a state in which tension can be adjusted.

The wire rod 4 passes through the inside of the guide hole 18 at the tip of the plurality of guides 17 which divides the weaving width direction into several pieces between the pair of holders 14, thereby displacing the displacement of the wire rod 4 to guide holes ( 18) It is provided in the state which can be detected as a displacement of the wire rod 4 in the inside. And this guide 17 is provided along one bus | bar with respect to the rotating body 2, in order to divide a weaving width direction at equal intervals.

Incidentally, the inclined cutting position detecting device 200 of the present invention, as a characteristic configuration, as shown in Figs. 4 and 5, a plurality of pressure sensors 19, amplifier 22 as the detecting device 21 ), An identification circuit 23, an AND gate 24 as a detection unit, a display circuit 25, and an oragate 26. As shown in FIG. The pressure sensor 19 is a ring-shaped piezoelectric element group, for example, and is mounted on the inner wall of the guide hole 18. The detection signal as the output of the pressure sensor 19 is amplified by the amplifying circuit 22, is separated from the noise signal by the threshold processing by the identification circuit 23, and becomes one input of the AND gate 24. Here, two guides 17 adjacent to each other and the pressure sensor 19 incorporated in the guide hole 18 are provided to display the inclination 13 corresponding to this section. When the AND gate 24 simultaneously receives input signals of a predetermined level at both ends, the AND gate 24 displays the section by, for example, blinking a display element corresponding to the two pressure sensors 19. The ora gate 26 receives the output signal of one of the end gates 24 and sends it to the loom or the like as a stop signal.

Next, the operation will be described. During the operation of the loom, the drive motor 8 rotates the rotating body 2 at a predetermined rotational speed. Simultaneously with the rotation of the rotating body 2, the wire rod 4 rotates together with the iron piece 11 and the brush 12 as the inclined cladding member 3 and the guide 17. During one rotation, the tip portion of the hairpin-shaped iron piece 11 enters between the sheet-shaped inclined 13 and then escapes from the sheet-shaped inclined 13. When no cutting of the seal occurs, the wire 4 is in the guide hole 18 of the guide 17 and is not in contact with the pressure sensor 19. Therefore, the output of the pressure sensor 19 is suppressed to a low level.

When one incline 13 is cut, the cut incline 13 sags on the other incline 13. Thus, when the hairpin-shaped iron piece 11 enters between the inclinations 13, it hangs the inclined shape 13 of the sag shape and pulls it from the sheet-like inclination 13 to the vicinity of the rotating body 2. As shown in FIG. The cut slope 13 is then wound on the brush 12 and abuts the wire 4 as the tension becomes stronger. As the rotation of the rotating body 2 proceeds, the tension of the inclined cut 13 rises and strongly contacts the wire rod 4. As a result, the wire rod 4 is displaced from the guide holes 18 of the two guides 17 positioned at both sides of the abutting portion to be brought into contact with the pressure sensor 19.

As a result, the detection signal corresponding to the pressure sensor 19 of the two guides 17 is amplified by the amplifying circuit 22 and output to the identification circuit 23. The identification circuit 23 outputs a H level signal to the AND gate 24 as a detection unit when the signal from the pressure sensor 19 reaches a level below a predetermined value. In this way, since the detection signal from the pressure sensor 19 is outputted to the AND gate 24 through the identification circuit 23, the wire rod 4 is connected to the pressure sensor 19 even though the inclination 13 is not cut. Even if a signal is output from the pressure sensor 19 due to light contact, the identification circuit 23 does not output a signal because its signal level is low. This prevents malfunction. When signals are output from the identification circuits 23 corresponding to the pressure sensors 19 of the two guides 18, both input terminals of the corresponding AND gates 24 become H level inputs. For example, 24 generates an output of H level and sends it to the display circuit 25. Here, the display circuit 25 judges the section between two guides 17 corresponding to the AND gate 24 which output the H level signal, and displays it as a broken position. Since the output of the AND gate 24 is also an input of the oA gate 26, the oA gate 26 outputs a stop signal to the loom when the warp 13 is cut. As a result, the loom stops and at the same time the motor 8 stops.

6 and 7 show a modification or application of the above embodiment. In FIG. 6, the pressure sensor 19 is attached to the bottom of the notch 27 opening toward the tip, not the guide hole 18 of the guide 17. In FIG. The wire rod 4 is displaced in the direction of the center of the rotor 2 in contact with the pressure sensor 19 at the time of cutting the seal, so that the pressure sensor 19 detects the fact that it is in contact with the cutting of the inclination 13. To generate a detection signal.

7 shows an example in which a comparison circuit 28 as a detection unit is interposed between the amplifier 22 and the display circuit 25 instead of the identification circuit 23 and the AND gate 24. In this example, when the cutting point of the inclination 13 is located at a position close to one of the two guides 17, the detection signal is different from the pressure sensor 19 of the one guide 17. Attention has been paid to the fact that the detection signal from the pressure sensor 19 of 17) becomes larger. Each comparison circuit 28 compares and judges the magnitude relationship between the signals from the two pressure sensors 19. Based on the determination result, the display circuit 25 has two guides ( 17) Indicate whether the section corresponds to the left half or right half. For this reason, the comparison circuit 28 inputs detection signals A and B at two input terminals, and outputs an H level signal from the output terminal N1 if AB is output, and an H level signal from the output terminal N2 if AB is input. .

The section of the incline 13 cut | disconnected by generation | occurrence | production of this output is specified by between two guides 17, Moreover, the position of the inclination 13 cut | disconnected by the magnitude comparison of two output signals has two guides. We can judge which is near to (17). Further, based on the detection signals from the two pressure sensors 17, the relationship between the ratio of the output signal level of the output from each pressure sensor 19 and the cutting position for this ratio is experimentally determined in advance. Alternatively, the cutting position can be estimated by direct proportional calculation from the two detection signals, and the cutting position can be estimated while specifying the cutting between the two guides 17 from this.

Example 2

The second embodiment is shown in FIG. 8 and is an example in which the detection apparatus is configured as a detection circuit (detector) and a display circuit for detecting a current flowing in an electric circuit formed by adjacent guides and wires therebetween. For this reason, the two guides 17 adjacent to each other are connected to the detection circuit 29, and the detection circuit 29 is connected to the display circuit 25 at the output side. In this embodiment, both the wire rod 4 and the guide 17 should be conductive, and when the thread is not cut, the wire 4 and the guide 17 are in a non-contact state with respect to the notch 27 of the guide 17, but the cut slope 13 When pressure is applied from the valve, it is displaced, and the displacement causes contact with the notches 27 of the guides 17 adjacent to each other, and is electrically connected by the conductive wire 4, the guide 17 as the conductive material, and the detection circuit 29. Construct a closed circuit.

At this time, since the current flows in the closed circuit, the detection circuit 29 detects the current and sends a signal corresponding to the cutting position of the inclination 13 to the display circuit 25. Thus, the conductive wire 4 and the guide 17 of the conductive material constitute a kind of switch. Then, as shown in FIG. 9, the conductive contact piece 30 is mounted at the contact position of the notch 27 with respect to the wire rod 4, and the detection circuit 29 is connected to the contact piece 30. It can also be comprised by the insulating material.

Example 3

The third embodiment is an example in which the wire rod is not composed of one wire in the weave width direction, and the wire rod of short length is divided into a plurality of wire rods in the weave width, and the phase is changed in the rotational direction of the rotating body to align. That is, as shown in FIG. 10, the wire rod 4 is tightly installed by using two supports 31 between three guides 17 for dividing the weaving width direction into several, and the guide hole of the guide 17. (18) Passed inside, facing the pressure sensor 19 there. These guides 17, which allow different wire rods 4 to pass through, are provided with the phases changed in the rotational direction of the rotating body 2 while dividing the weaving width direction into several. In this embodiment, since several wire rods 4 are independent for each detection target section of the weave width, they do not interfere with each other, and the specification of the sections is more sure. And since the support body 31 is comprised in semi-circle shape, it is not caught by the inclined 13 cut off.

In the above embodiment, the inclined hook member is composed of a hairpin-shaped iron piece 11 and a brush 12, but the brush 12 may be omitted. In addition, the hairpin-shaped iron pieces 11 may be provided in parallel so as to simply form a straight line and extend in the radial direction of the rotating body.

In the present invention, since the cutting position of the warp in the weaving width direction can be specified in units of sections of the guide, the actual cutting position can be easily found, the inclination repair after the detection can be made quickly, and the operation rate of the loom is increased. Improve by.

Claims (2)

With respect to the rotating body 2 extending in the weave width direction, the inclined latch member 3 is provided in the axial direction, the wire rod 4 is provided in the axial direction, and the cut inclination 13 is rotated. In the inclination cut detection device which is caught by the inclined cladding member to rotate together with the inclined cutting member to contact the wire rod, and detects the cutting of the inclination, the wire rod (at the tip portion provided along the axial direction with respect to the rotating body 2). 4) is provided with a plurality of guides 17 and a detection device 21 in proximity to each other, the detection device is provided in each of the guides and a plurality of sensors 19 for detecting contact with the wire rod, adjacent to each other A plurality of detection units provided for each sensor of two guides to output signals when two corresponding sensors simultaneously output detection signals, and a position signal corresponding to a detection unit connected to the multiple detection units and outputting a signal. And a display circuit (25) for outputting the inclined cutting position detecting device. With respect to the rotating body 2 extending in the weave width direction, the inclined latch member 3 is provided in the axial direction, the wire rod 4 is provided in the axial direction, and the cut inclination 13 is rotated. In the inclination cut detection device which is caught by the inclined cladding member to rotate together with the inclined cutting member to contact the wire rod, and detects the cutting of the inclination, the wire rod (at the tip portion provided along the axial direction with respect to the rotating body 2). 4) is provided with a plurality of guides 17 and the detection device 21 in proximity to each other, the detection device is provided for each of the two adjacent guides to close the closed circuit by contacting the corresponding two guides and the wire rod A plurality of detectors for outputting signals when configured, and a display circuit 25 for outputting position signals corresponding to the detectors that are connected to the detectors and output the signals. Value detecting device.