JP3558466B2 - Bobbin device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bobbin device that can supply wire from the bobbin was found preparative winding a metal wire.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, metal wires such as copper wires have been used for wound motors, small transformers, communication cables, and audio products. This metal wire can be used as a coil by winding it around a core, or a plurality of metal wires can be wound spirally or knitted in a mesh, and the periphery thereof can be shielded by an insulator to produce a communication cable. Used in
[0003]
In the case of manufacturing the above communication cable, conventionally, a plurality of bobbins in which a metal wire is wound around a winding shaft are prepared, a metal wire is pulled out from each bobbin, and the wire is guided to a cable manufacturing device such as a twisting machine. Had been manufactured.
Each of the bobbins has a disk-shaped side plate provided on both sides of the body, and a wire rod is wound around the body between the side plates.
However, if an operator visually judges the remaining amount of the metal wire fed from the bobbin and stops the operation of feeding the bobbin, the remaining metal wire remaining has an error of 100 m to 5.6 m. When a plurality of bobbins are installed, for example, when 100 or more bobbins are set, there is a risk of being overlooked. As described above, if the remaining amount of the metal wire cannot be detected, the end of the metal wire may be detached from the body and entangled with another wire, or the bobbin may be pulled and detached from the feeding device to cut the other wire. is there.
[0004]
On the other hand, a technique has been proposed in which when the metal wire reaches the vicinity of the terminal end, the metal wire is automatically detected so that the metal wire does not suddenly come off the bobbin body. Specifically, as shown in Japanese Utility Model Application Laid-Open No. 63-200564, a groove is provided on the peripheral surface of the body of the bobbin, and a guide hole extending from the groove to the hollow portion and a lead hole extending to the outside of the disk are formed. A conductive wire is buried in the groove, one end of the conductive wire is guided to the hollow portion through the guide hole, bent at the hollow portion to prevent extraction, and the other end is guided to the outside of the disk from the lead hole to guide the disk. It is folded along. Further, the conductive wire is connected to a termination detection circuit which is a relay circuit.
[0005]
When a metal wire is wound around the body of the bobbin and electricity is passed through the metal wire, the bobbin is electrically connected to the termination detection circuit via a conductive wire. Then, when the metal wire is drawn out of the bobbin and comes out of the groove, the detection circuit is not energized, so that it is possible to detect that the relay has opened and the metal wire has reached the terminal portion. By connecting the detection circuit to a twisting machine or the like and stopping the apparatus, the feeding operation can be stopped before the metal wire completely reaches the end.
[0006]
[Problems to be solved by the invention]
However, the bobbin disclosed in Japanese Utility Model Application Laid-Open No. 63-200564 has diagonally formed guide holes and lead-out holes connected to grooves provided on the peripheral surface of the body, in the disk and the body. The conductive wire is embedded in the continuous guide hole and the lead-out hole, and is mounted by bending both ends, so that bobbin processing and mounting of the conductive wire are troublesome and time-consuming, workability is low, and manufacturing cost is high.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the related art, and to provide a bobbin device with improved safety and reliability when supplying a wire from a bobbin.
[0008]
[Means for Solving the Problems]
The present invention has the following configuration to achieve the above object.
A bobbin for winding a wire rod rotatably supported so that a hole for mounting a conductor piece is formed in the axial direction and communicates with a winding core portion peripheral surface around which the wire material is wound from the side surface portion of the bobbin so that the wire material can be fed out. A conductor rod that is inserted into the shaft hole of the bobbin and that establishes electrical continuity with the conductor piece, a detection circuit that can detect the remaining amount of wire by the conduction state of current flowing through the conductor bar, and the bobbin. A controller for controlling the feeding operation of the wire rod, the detection circuit detects that the wire rod has been fed out from the bobbin, and that conduction between the wire rod remaining on the core and the conductor piece has been interrupted, The controller stops the bobbin feeding operation.
Further, the conductor piece is nipped by a tapered surface of a nut screwed into the conductor rod, so that electrical conduction with the conductor rod is secured.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a sectional view showing a reference example of the winding bobbin of the wire, FIG. 2 is an explanatory view showing a state where the insertion of the conductor rod to the axial bore of the bobbin, the bobbin unit and the bobbin device according to Figure 3 the present invention It is explanatory drawing of the cable manufacturing apparatus connected .
[0010]
First, the configuration of a bobbin for winding a wire will be described with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 1 denotes a bobbin, a winding core 1a on which a bare copper wire or a shielded communication cable or the like as a wire 2 can be wound, and a disc-shaped body integrally formed on both sides thereof. Side portion 1b. The bobbin 1 is formed with a hole 1c communicating with the peripheral surface of the core 1a around which the wire 2 is wound from the side surface 1b (left side in the drawing), in the axial direction with the core 1a. The conductor piece 3 is inserted into the hole 1c from the side surface portion 1b and bent into an L shape so that the hole can be easily mounted. One end 3a of the bent conductor piece 3 is exposed on the peripheral surface at the core 1a and contacts the wire 2 to be wound, and the other end 3b reaches the shaft hole 1d when bent along the side surface 1b. It is attached so that it does. The conductor piece 3 bent toward the side surface portion 1b can be guided to the shaft hole 1d by using a concave portion formed on the outer surface by molding. The bobbin 1 is integrally formed using a resin material such as polyvinyl chloride (PVC).
[0011]
Also, FIG. 2 shows that the conductor rod 4 is inserted into the shaft hole 1d of the bobbin 1 as a rotation axis, and nuts 5 are screwed from both sides thereof, and the bobbin 1 is fixed to the conductor rod 4 by pressing both side portions 1b. Things. Further, by screwing the nut 5, the end 3 b of the conductor piece 3 bent along the side surface 1 b is pressed by the tapered surface of the nut 5 to stably establish the electrical conduction state with the conductor rod 4. Have secured. As the conductor bar 4 and the nut 5, a conductor having good conductivity such as iron, brass, or copper is preferably used.
The bobbin 1 is rotatably supported on the conductor bar 4 by a bearing (not shown). However, the bobbin 1 may be configured so that only the bobbin 1 is rotatably supported around the conductor bar 4.
[0012]
Since the conductor bar 4 and the nut 5 have conductivity, the remaining amount of the wire 2 can be detected by connecting a remaining amount detection circuit described later to the conductor bar 4. That is, when a current is passed through the wire 2 to the detection circuit via the conductor pieces 3 and the conductor rods 4, the wire 2 is fed out and the connection with the conductor piece 3 is interrupted (at this time, the wire 2 By stopping the feeding operation of the bobbin 1 with the end portion of the wire 2 being a predetermined length from the right end side of the core 1a, the wire 2 can be replaced with a fixed amount of the wire 2 left in the core 1a.
In the case of a cable or the like in which the wire 2 is shielded, the remaining amount can be detected by exposing the copper wire only in a portion that contacts the conductor piece 3.
[0013]
The bobbin 1 can be integrally formed of a resin material, and the hole 1c for mounting the conductor piece 3 can be manufactured only by drilling the side surface 1b in the axial direction. Also, by using a conductor rod as the rotation axis, the circuit configuration for connecting the wire 2 to the remaining amount detection circuit via the conductor piece 3 can be simplified, so that the manufacturing cost can be reduced.
[0014]
Next, a bobbin device incorporating the bobbin and a cable manufacturing device connected to the bobbin device will be described with reference to FIG.
In FIG. 3, a bobbin device 6 is provided with a plurality of bobbins 1 in which a wire 2 is wound around a core so as to be rotatable about a conductor rod 4. The bobbin 1 mounted on the bobbin device 6 varies depending on the cable to be manufactured, but about 100 pieces can be set. In this embodiment, the bobbin 1 is installed in the horizontal direction, but the bobbin 1 can be installed in the vertical direction.
[0015]
Reference numeral 7 denotes a controller which controls the operation of feeding the wire rod by each of the bobbins 1. The controller 7 includes a remaining amount detection circuit 8 for detecting the remaining amount of the wire 2 wound around each of the bobbins 1. Reference numeral 9 denotes a cable manufacturing device for manufacturing a shielded communication cable by combining a plurality of wires 2 drawn out from the respective bobbins 1 of the bobbin device 6 and winding them in a spiral shape.
[0016]
The controller 7 brakes and stops the rotation of the bobbin 1 based on the remaining amount detection signal from the remaining amount detection circuit 8, stops driving of the cable manufacturing device 9, and stops the feeding operation of the wire 2. Let it. As means for stopping the rotation of the bobbin 1, for example, a means for stopping the bobbin 1 by bringing a brake pad into contact with the side surface of the bobbin or the like is employed.
The remaining amount detection circuit 8 connects a circuit for supplying a current to each bobbin 1 of the bobbin device 6 and a circuit for supplying power (12 V to 24 V) to the cable manufacturing device 9 by a switching means 10. As the switching means 10, a coil relay, a transistor, an LSI, or the like is preferably used.
[0017]
Further, as the cable manufacturing device 9, a device for manufacturing a cable by winding the wire 2 in a spiral shape or the like, a device for manufacturing a cable by knitting the wire 2, a device for winding a winding around a winding stator, and further, Various types of cable manufacturing devices, such as those that shield stranded wires, can be used.
[0018]
As described above, the wire 2 is paid out from each bobbin 1 of the bobbin device 6, guided to the cable manufacturing device 9, and wound or knitted in the device to manufacture a cable. While the remaining amount of the wire 2 wound on each bobbin 1 is sufficient, since the switching means 10 is closed, current flows through the remaining amount detection circuit 8 and the controller 7 puts the cable manufacturing apparatus 9 into an operating state. is there.
When the remaining amount of the wire 2 wound around each bobbin 1 decreases and the contact with the conductor piece 3 is cut off, the switching means 10 is opened and the current of the remaining amount detection circuit 8 is cut off. The drive of the cable manufacturing device 9 is stopped, and the rotation of the bobbin 1 is stopped.
[0019]
This makes it possible to stop the apparatus reliably with the wire 2 remaining around the core part 1a of each bobbin 1 for a fixed length, for example, about 30 m to 15 m, thereby improving the safety and reliability of the apparatus. it can.
[0020]
Next, a reference example of the bobbin used in the embodiment will be described with reference to FIG. Note that the same reference numerals are given to the same device configurations as those in the above-described embodiment, and the description is referred to.
4, in the bobbin 11, one of the side surfaces 11b and 11c formed on both sides of the core 11a can be formed using a conductive resin or a metal plate. In this case, the side portion 11b made of a resin material, the core portion 11a, and the side portion 11c are rotated at a high speed in a state where they are in contact with each other and rubbed, whereby the resin can be melted and integrated. .
[0021]
When the wire 2 is wound around the bobbin 11 and used, it is connected to the remaining amount detecting circuit 8 through the conductor rod 4 or the side surface 11c as a rotating shaft. While the wire 2 is fed from the bobbin device 6 and is in contact with the side surface 11c of each bobbin 11, the switching means 10 is closed, so that a current flows through the remaining amount detection circuit 8 to perform the feeding operation. When the contact with the switch 11c is released, the controller 7 is controlled so that the switching means 10 is opened and the current of the remaining amount detection circuit 8 is cut off to stop the feeding operation.
[0022]
Next, another example of the method of installing the bobbin will be described with reference to FIG. Note that the same reference numerals are given to the same device configurations as those in the above-described embodiment, and the description is referred to.
In the above-described embodiment, the bobbin is installed in the horizontal direction and used in the bobbin apparatus. However, the bobbin may be installed in the vertical direction as shown in FIG.
[0023]
First, in FIG. 5A, the bobbin 12 is erected vertically on a bearing case 13 as a bearing so as to abut the side surface portion 12c side. The bearing case 13 is mounted on an iron plate 14 which is a conductive member, and the iron plate 14 is set on an insulating sheet 15 made of, for example, resin. The bobbin 12 is rotatably supported at its lower end by inserting a shaft hole into a conductor rod 4 fixed by a nut 5 fitted into an iron plate 14 through the bearing case 13 and rotatably supported. The upper end projecting from the upper end is fixed by a nut 5 to restrict the vertical movement. The conductor piece 3 mounted on the side surface portion 12b is sandwiched by the tapered surface of the nut 5 so as to be electrically connected to the conductor bar 4. Further, the conductor bar 4 is electrically connected through an iron plate 14 to which the lower end is connected, and is connected to the remaining amount detection circuit 8 by a lead wire 16 connected to a part of the iron plate 14.
Although the bearing case 13 has a built-in bearing 13a and does not function in a type in which the conductor bar 4 is fixed, it functions effectively as a bearing in a configuration in which the conductor bar 4 rotates together with the bobbin 12. In this embodiment, the wire wound around the core 12a of the bobbin 12 is omitted in the drawings.
[0024]
Next, in FIG. 5B, the bobbin 17 is rotatably supported by inserting a shaft hole into an iron core 19 erected on an insulating plate 18 made of, for example, a resin material. The bobbin 17 is supported by the iron core 19 with the side face 17c on which the conductor piece 3 is mounted facing downward. The upper end of the iron core 19 is free, but can be fixed with a nut or the like. Further, the length of the iron core 19 does not necessarily need to penetrate through the shaft hole of the bobbin 17 and protrude from the side surface portion 17b. As shown by the broken line, the bobbin 17 only rotates smoothly and does not come off. The length is enough.
The conductor piece 3 provided on the side surface 17 c is connected to the remaining amount detection circuit 8 via a lead wire 20. The lead wire 20 is preferably formed on the insulating plate 18 side. When the bobbin 17 is mounted on the iron core 19, the lead wire 20 is installed so that the conductor piece 3 and the lead wire 20 are connected. In the present embodiment, the wire rod wound around the core 17a of the bobbin 17 is omitted in the drawing.
[0025]
In this manner, the bobbins 12, 17 mounted on the bobbin device can be used by being installed vertically according to the type of the cable to be manufactured, such as manufacturing a stranded wire.
[0026]
A reference example of the bobbin device will be described with reference to FIG. Note that the same members as those of the bobbin device shown in FIG.
For example, as shown in FIG. 6, a plurality of bobbins 21 made of a normal resin material may be used, and a carbon brush 22 as a conductive member may be pressed against the outer periphery of the wire 2 wound around each bobbin 21. The bobbin 21 has its rotating shaft rotatably supported at both ends by a mounting plate 24 provided on the bobbin device 6. The carbon brush 22 is attached to one end of a torsion coil spring 23 formed of a copper wire or the like, and the other end of the torsion coil spring 23 is fixed to the bobbin device 6. The torsion coil spring 23 is connected to the controller 7 via the bobbin device 6. The contact surface of the carbon brush 22 with the wire 2 is preferably chamfered in a tapered shape at both corners in order to maintain a good contact state.
[0027]
The controller 7 includes a remaining amount detection circuit 8 for detecting the remaining amount of the wire 2 wound around each bobbin 21. The cable manufacturing device 9 manufactures a shielded communication cable by combining a plurality of wires 2 drawn out from the respective bobbins 21 of the bobbin device 6 and winding them in a spiral shape.
When the remaining amount detection circuit 8 detects that the wire is fed from the bobbin 21 and the conduction between the wire 2 remaining on the core and the carbon brush 22 is interrupted, the controller 7 feeds the bobbin 21. Stop the operation.
The pressing force of the carbon brush 22 on the wire 2 depends on the winding diameter of the wire 2. However, the pressing force of the carbon brush 22 in a state where a predetermined length, for example, about 30 to 15 m is left around the core of each bobbin 21 of the wire 2 is obtained. Is desirably set so as to be canceled.
[0028]
As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and it is needless to say that more modifications can be made without departing from the spirit of the invention. That is.
[0029]
【The invention's effect】
According to the present invention, as described above, the bobbin can be integrally formed of a resin material, and the hole for mounting the conductor piece can be manufactured only by drilling in the axial direction from the side surface, so that the processing operation is easy and the workability is improved. Also, by using a conductor rod as the rotation axis or using a conductive member on the side surface, the circuit configuration for connecting the wire to the remaining amount detection circuit via the conductor piece can be simplified, thereby reducing the manufacturing cost. be able to.
Further, in the bobbin device, the device can be reliably stopped in a state where the wire is left for a fixed length around the core of each bobbin, and the safety and reliability of the device can be improved.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a reference example of a bobbin for winding a wire.
FIG. 2 is an explanatory view showing a state in which a conductor rod is inserted into a shaft hole of a bobbin.
FIG. 3 is an explanatory view of a bobbin device according to the present invention and a cable manufacturing device connected to the bobbin device .
FIG. 4 is a sectional view of a bobbin according to the reference example of FIG. 1;
FIG. 5 is an explanatory diagram showing an installation configuration of a bobbin according to another example of FIG. 3 ;
6 is an explanatory diagram of a bobbin device according to the reference example of FIG. 3 and a cable manufacturing device connected to the bobbin device .
[Explanation of symbols]
1, 11, 12, 17, 21 Bobbins 1a, 11a, 12a, 17a Cores 1b, 11b, 11c, 12b, 12c, 17b, 17c Side 1c Hole 1d Shaft hole 2 Wire rod 3 Conductor piece 4 Conductor rod 5 Nut Reference Signs List 6 Bobbin device 7 Controller 8 Remaining amount detection circuit 9 Cable manufacturing device 10 Switching means 13 Bearing case 13a Bearing 14 Iron plate 15 Insulating sheet 16, 20 Lead wire 18 Insulating plate 19 Iron core 22 Carbon brush 23 Torsion coil spring 24 Mounting plate

Claims (2)

A bobbin for winding a wire rod rotatably supported so that a hole for mounting a conductor piece is formed in the axial direction and communicates with the core surface around which the wire is wound from the side surface of the bobbin so that the wire can be fed out. ,
A conductor rod that is inserted into the shaft hole of the bobbin and that establishes electrical continuity with the conductor piece;
A detection circuit capable of detecting the remaining amount of the wire rod by the conduction state of the current flowing through the conductor rod,
A controller for controlling the operation of feeding the wire rod by the bobbin,
When the detection circuit detects that the wire is fed from the bobbin and the conduction between the wire remaining on the core and the conductor piece is interrupted, the controller stops the bobbin feeding operation. Bobbin device. The bobbin device according to claim 1, wherein the conductor piece is nipped by a tapered surface of a nut screwed to the conductor bar to ensure electrical conduction with the conductor bar.

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