JPH0637542Y2 - Disconnection detector for cylindrical stranded wire machine - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a wire breakage detector for a tubular twisting machine that manufactures a conductor of an electric wire cable by twisting a plurality of wires, and in particular, a wire breakage of a central wire can be detected with a simple and inexpensive structure. The present invention relates to a disconnection detector for a tubular stranded wire machine.

[Prior art]

Although the supply-type stranded wire function is also used in the production of conductors for electric wires and cables, there are many cylindrical stranded machines recently, because the untwisting does not work and extra stress is not applied to the strands during stranded wire production. It is used. This tubular stranded wire manufacturing machine 100 is the 7th
As shown in the figure, a plurality of cylinders 110 to 112 are provided in series, and the wire drums 113 to 115 around which the wire strands 116 to 118 are wound are arranged in the cylinders 110 to 112, respectively. It is set up. From each of the strand drums 113 to 115, strands 116 to 118
Are drawn out and output from the end of the cylinder 110. The strands 116 to 118 are guided to the twisted wire port 122 through the holes of the distribution plates 119, 120 and 121. The distribution plates 119 to 121 are supported and fixed to the shaft 123 at the end of the cylinder 110, and are configured by forming a plurality of holes along the circumference of a disc having a predetermined diameter. By rotating the cylinders 110 to 112, the dividing plates 119 to 121
And the strands 116 to 118 are twisted together to produce a stranded wire 140. In such a tubular stranded wire machine, if any of the strands 116 to 118 is broken, the strand becomes insufficient and the product becomes defective. Therefore,
In the vicinity of the radius of gyration between the distribution plate 121 and the twisted wire port 122,
A semi-arcuate touch bar as shown in the enlarged perspective view of FIG.
150 is installed. Then, for example, when the wire 117 is broken, the broken portion is swung in the direction of the touch bar 150 by the centrifugal force, so that the broken portion and the touch bar 150 mechanically contact each other. The support bar 151 to which the touch bar 150 is attached is fixed so as to be rotatable around a fulcrum 152,
A locking groove 153 is formed at the other end of the support rod 151.
The locking groove 153 is normally formed by a spring 154 by an arrow A.
It engages with the locking piece 155 biased in the direction, but when the support rod 151 rotates counterclockwise about the fulcrum 152 by a predetermined angle due to disconnection, the locking groove 152 causes the locking piece 155 to move. Since it is pushed up, the engagement relationship between the engagement groove 153 and the engagement piece 155 is released. Then, the locking piece 155 rotates counterclockwise by a predetermined angle to the position of the stopper 156. Then, the rotation power source of the cylinders 110 to 112 is urgently stopped by a mechanism (not shown) connected to the locking piece 155.

[Problems to be solved by the device]

In the conventional disconnection detector as described above, the touch bar 15
Since 0 is provided on the outer side of the rotation path of the strands 117 and 118 which are the outer layers of the stranded wire 140, the broken portions of the strands 117 and 118 on the outer layer side always contact the touch bar 150. But,
With respect to the central wire 116, the wire on the outer layer side becomes an obstacle in detecting wire breakage, and thus the wire may not contact the touch bar 150 even if the wire breaks. Therefore, in such a case, the strands 116, which are the core, are twisted together without being cut. Therefore, in order to reliably detect the disconnection of the core wire 116, the wire strands near any of the rotation centers of the distribution plates 119 to 121 are detected.
The disconnection of 116 is detected electrically, mechanically or magnetically, and the detection output is taken out of the cylinders 110 to 112,
A method of stopping the rotation of the cylinders 110 to 112 has been considered. However, in order to carry out this method, the shaft 12
It is necessary to provide an expensive rotary contactor such as a brush or a short ring on the shaft on the side opposite to 3 to take out the disconnection detection signal to the outside of the cylinder. For this reason, there is a problem in that considerable cost and time are required, including the cost for mounting the rotary contact and the cost for modifying the rotary contact itself. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to detect a wire breakage at the center of a twisted wire reliably and with an inexpensive structure. The present invention is intended to provide a disconnection detector for a tubular twisting machine capable of performing the above.

[Means for achieving the object]

In order to achieve the above-mentioned object, the disconnection detector of the tubular wire twisting machine according to the present invention fixes each wire drawn from each of two or more wire drums housed in the cylinder to the cylinder. A wire breakage detector for a tubular stranding machine that guides wires through a distribution plate to a twisting wire port, and rotates the wire distribution plate together with the cylinder to twist the individual wires at the twisting wire port. A guide plate having a hole through which a wire for disconnection detection among the wires constituting the stranded wire passes, and a hole through which the wire for disconnection detection same as this guide plate passes, and the wire core passes through And a predetermined disconnection detection piece that is held in a predetermined engagement relationship with the guide plate in the state of being rotated, and rotates together with the guide plate when the dividing line plate rotates, and a predetermined distance from the rotation locus position of the end of the disconnection detection piece. The wires are placed in separate spatial positions and are broken by the breakage of the wire to be detected. And a proximity switch that operates when the disconnection detection piece held in a predetermined engagement relationship with the guide plate protrudes in the outer circumferential direction of rotation, and the operation output of the proximity switch is detected for disconnection of the wire. It is characterized by being used as a signal.

[Action]

When manufacturing a stranded wire, the wire to be detected for wire breakage is guided to the twisted wire through the guide plate and the hole of the wire breakage detection piece in common. In the state where the wire passes through both the guide plate and the hole of the disconnection detection piece,
The wire breakage detection piece is held by the wire in a predetermined engagement relationship with the guide plate. However, when the wire breaks, the wire does not penetrate through the holes of the guide plate and the wire break detection piece, so the wire break detection piece projects toward the outer circumferential direction of rotation due to centrifugal force. A proximity switch is provided at a space position that is a predetermined distance from the rotational locus position of the end of the wire breakage detection piece, so if the wire breakage detection piece protrudes in the rotation outer circumferential direction, this wire breakage detection piece will be detected by the proximity switch. To be done. As a result, the disconnection detection signal is output from the proximity switch. In this way, the engagement relationship between the two members held in a specific relationship by the wire to be detected for wire breakage is broken by the wire breakage of the wire, and the wire breakage detection piece that is one member protrudes in the outer peripheral direction by the centrifugal force. With the proximity switch being detected, it is possible to reliably detect the disconnection of the strand in the center of the twisted wire without providing an expensive rotary contact plate. Further, since the guide plate and the disconnection detecting piece can be made of a lightweight metal plate or a resin plate such as plastic, it is inexpensive.

【Example】

Embodiments of the present invention will be described below. FIG. 1 is a diagram showing a configuration of a main part of a tubular twisting machine to which the disconnection detector of the present invention is applied. In the figure, the distribution plate 11
A guide plate 200 is fixedly attached to the shaft 123 between 9 and 120. The guide plate 200 is a quadrangular tubular body, and as shown in the enlarged perspective view of FIG. 2, a flat plate-shaped disconnection detection piece 201 that slides in the inner cylinder is inserted into the inner cylinder.
Then, a proximity switch 202 is arranged at a spatial position separated from one end of the disconnection detection piece 201 by a predetermined distance. As shown in FIG. 3, the guide plate 200 and the disconnection detecting piece 201 are provided with holes 210 and 211 near the center position for passing the strand 116 at the center of the twisted wire. The disconnection detection piece 201 has stoppers 213 and 214 at both ends thereof that regulate the sliding range of the guide plate 200 within the inner cylinder. The stoppers 213 and 214 hit the bottoms 216 and 217 of the recesses formed at both ends of the guide plate 200, and thereby the disconnection detection piece 201
Regulate the slide range of. When manufacturing the stranded wire 140, the central wire 1 to be detected for disconnection
16 is penetrated through the hole 211 of the disconnection detection piece 116 and the hole 210 of the guide plate 200, and is guided to the twisted wire port 122 through the distribution plates 120 and 121. When the wire 116 is penetrated through the holes 211 and 210, the guide plate 200 and the disconnection detecting piece 201 are held by the wire 116 in a relationship centered on the wire 116. FIG. 3 shows this state. When the twisted wire is started in this state, both ends of the wire breakage detection piece 201 rotate along the rotation locus indicated by the chain double-dashed line 300 in FIG. The proximity switch 202 is arranged at a spatial position of the alternate long and short dash line 310, which is separated from the rotation locus by a predetermined distance. When the wire 116 is broken, the broken wire detection piece 201 projects toward the outer circumference of rotation due to centrifugal force, as shown in FIG. That is, when the wire 116 is disconnected, the guide plate 200 and the disconnection detection piece 201
There is no means for integrally holding and in a specific relationship as shown in FIG. At this time, the guide plate 200 is rotating together with the disconnection detecting piece 201 in the inner cylinder. Therefore, the disconnection detection piece 201 slides in the inner cylinder of the guide plate 200 by centrifugal force, and projects in the outer circumferential direction of rotation to a position where the stopper 213 abuts on the bottom 216 of the recess at one end of the guide plate 200. In this state, the guide plate 200 and the wire breakage detection piece 201 continue to rotate, but one end of the wire breakage detection piece 201 protruding in the outer circumferential direction of rotation rotates along a rotation locus as indicated by a chain line 320 in FIG. That is, the proximity switch 202 rotates within the sensitive range. As a result, the proximity switch 202 operates and outputs a disconnection detection signal. The disconnection detection signal causes an emergency stop of the rotation of the rotating portion including the distribution plate. When the proximity switch 202 is magnetic, the disconnection detection piece 201 is entirely made of a metal material, or both ends thereof are made of a metal material. On the other hand, the guide plate 200 may be made of a metal material or a synthetic resin material such as plastic. Further, since the disconnection detection piece 201 is held by the wire 116, the surface of the wire 116 may be damaged. This is because if the hole 211 of the wire breakage detection piece 201 is accurately aligned with the center of the wire detection piece 201 and the hole diameter is as close as possible to the outer diameter of the wire 116, the wire breakage detection piece will be detected even if there is centrifugal force. Since 201 rotates without eccentricity, the outer surface where the wire 116 is in contact with the hole 211 is not damaged. By the way, in FIG. 1, the guide plate 200 and the disconnection detection piece 2
01 is attached to the shaft 123 between the distribution plates 119 and 120, but when applying the disconnection detector of the present invention to the twisting machine actually operating in the manufacturing plant, the shaft 123 After cutting out a part, it is necessary to attach the guide plate 200 and the disconnection detecting piece 201. Therefore, during that time, the manufacturing process has to be stopped for a long time, resulting in a large economical loss. Therefore, as shown in the configuration of another embodiment of FIG. 5, the guide plate 200 is connected to the twisted wire port 12 of the distribution plate 121.
If the disconnection detection piece 201 is attached to the guide plate 200 by being fixed or fitted to the side surface on the second side, the shaft 123 does not need to be cut out, and there is an advantage that the down time of the manufacturing process can be short. . On the other hand, it is detected by the magnetic proximity switch 202 that the disconnection detecting piece 201 is projected to the outer peripheral side of the rotation.
As shown in the side view of the drawing, the end portion of the disconnection detecting piece 201 protruding from the guide plate 200 blocks the light 402 emitted from the light emitting device 400 toward the light receiving device 401, whereby the strand 116 is disconnected. It may be configured to detect that. According to this configuration, since the disconnection detection piece 201 can use a lightweight material other than a metal material, physical stimulation on the outer surface of the wire 116 is reduced, and the outer surface of the wire 116 is damaged. It becomes possible to detect the wire breakage. In the above description, the central wire 116 is targeted for disconnection detection, but the presence or absence of disconnection can be similarly detected for the outer layer side wires 118 and 117.

[Effect of device]

As described above, the present invention is provided with the guide plate and the disconnection detecting piece which are engaged in a predetermined engagement relationship by penetrating the wire core of the disconnection detection target, and the engagement relationship between the two is broken due to the occurrence of the disconnection. Since the disconnection detection piece protruding from the guide plate in the direction of the outer circumference of rotation is detected by the proximity switch, and the output of this proximity switch is used as the disconnection detection signal,
The central wire can be reliably detected. Further, since it is not necessary to use an expensive rotary contactor, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the main part of a twisting machine to which the present invention is applied, FIG. 2 is an enlarged perspective view showing the configuration of the wire breakage detector in FIG. 1, and FIG. FIG. 4 is an explanatory view showing the engagement relationship of the wire breakage detection pieces, FIG. 4 is an explanatory view showing the engagement relationship of the wire breakage detection pieces in the wire breakage state, and FIG. 5 is a configuration diagram showing another embodiment of the mounting position of the wire breakage detector. FIG. 6 is a side view showing another example of the proximity switch, FIG. 7 is a configuration diagram of a twisting machine using a conventional disconnection detector, and FIG. 8 is a perspective view showing the configuration of a conventional disconnection detector. Is. 110,111,112 …… Cylinder 113,114,115 …… Wire wire drum 116,117,118 …… Wire wire 119,120,121 …… Division plate 122 …… Twisted wire 140 …… Twisted wire 200 …… Guide plate 201 …… Disconnection detection piece 202 …… Proximity switch 210,211… … Hole 213,214 …… Stopper 400 …… Light emitter 401 …… Receiver

Claims (1)

[Scope of utility model registration request] 1. A strand wire drawn out from each of two or more strand drums housed in a cylinder is led to a twisted wire mouth through a split plate fixed to the cylinder, and the split plate is formed together with the cylinder. A wire breakage detector of a tubular twisting machine that twists each wire by twisting each wire by rotating, and is fixed to the distribution plate, and is a wire breakage detection target wire among the wires forming the twisted wire. A guide plate having a hole through which a wire through which the same wire breaking detection target as this guide plate passes is held, and is held in a predetermined engagement relationship with the guide plate in a state where the wire is passing, A wire breakage detection piece that rotates together with the guide plate by the rotation of the dividing plate, and a space position that is separated from the rotation locus position of the end of the wire breakage detection piece by a predetermined distance. Disconnection detection that was held in a predetermined engagement relationship with the guide plate A disconnection detector for a tubular wire twisting machine, comprising: a proximity switch that operates when a piece projects in the outer circumferential direction of rotation thereof, and uses the operation output of the proximity switch as a wire disconnection detection signal.