JP5124155B2 - Wire brazing method and brazing apparatus - Google Patents

Description

  The present invention relates to a wire brazing method and a brazing apparatus represented by a steel wire.

For example, a cord for reinforcing a rubber article such as a tire or a belt conveyor is generally manufactured by twisting a plurality of brazed wires. It is customary to use a twisted wire machine.

In the tubular type stranded wire machine, as shown in FIG. 1, a bobbin 2 around which a wire 1 serving as a core is wound is disposed outside the rotating barrel 3, while a bobbin 5a around which wires 4a to 4f serving as sheaths are wound. ˜5f is placed inside the rotating barrel 3. Then, the wire 1 is guided to the tip side of the rotating barrel 3 by bypassing the bobbins 5a to 5f, and further guided to the twisting die 6 arranged on the outside of the barrel on the extension of the barrel rotating shaft. On the other hand, the wires 4a to 4f are led to the peripheral end portion of the rotating barrel 3 along the wall surface of the rotating barrel 3, and further guided from the barrel peripheral end portion to the preformer 7 on the outlet side thereof. The brazing is applied in the same shape as the twisted state. The brazed sheath wire is then led to the twisting die 6 and placed around the core. Then, by rotating the rotating barrel 3, the sheath wires 4 a to 4 f are wound around the core 1 in the twisting die 6, and the cord C is obtained.
Thus, when manufacturing a code | cord | chord, it twists, after giving a brazing to several wires simultaneously.

  By the way, in recent years, not only a cord in which a plurality of wires are twisted but also a single brazed wire is used to reinforce a rubber article. However, when brazing a single wire, it is extremely inefficient to use the above-described tubular stranded wire machine that brazes a plurality of wires.

Thus, Patent Document 1 proposes a brazing device that brazes one wire without using a tubular-type stranding machine. In this brazing device, a brazing pin that grips a wire brazes the wire by a brazing means that rotates around the wire pass line as a center of rotation.
Japanese Patent No. 3106328

  However, since the above-described brazing apparatus cannot use a conventional brazing jig, a new brazing jig must be prepared. That is, when a conventional brazing device is used, the center of gravity is shifted from the wire pass line, and centrifugal force is applied, so that high-speed rotation cannot be performed. And it becomes difficult to give the desired brazing to the wire. Therefore, in order to give the desired brazing, the number of newly produced mechanical parts increases, and the number of parts management man-hours increases.

  Accordingly, an object of the present invention is to provide an appropriate brazing method and brazing apparatus for one wire.

  As a result of earnestly examining a method for performing appropriate brazing on one wire, the inventor increases the number of parts management man-hours by installing a rotating shaft for turning the brazing pin on the pass line. Without finding out, the present invention has been found to be effective for imparting the desired brazing to the wire.

That is, the gist of the present invention is as follows.
(1) At a position where the wire is locked to a pin extending radially outward of the rotary shaft from the rotary shaft arranged on the pass line of the wire, and the rotary shaft is rotated on the pass line and separated from the pass line. A method of brazing a wire, wherein the wire is brazed by rotating a wire portion locked to a pin around a pass line.

(2) The wire brazing method according to (1), wherein the wire passing speed is adjusted.

(3) A rotating shaft is rotatably arranged on the wire pass line, and a pin that extends radially outward of the rotating shaft and is engaged with the wire at a position separated from the rotating shaft is disposed on the rotating shaft. A wire brazing device characterized by being provided so as to be able to rotate together with a rotation shaft around the wire.

(4) In the above (3), an entrance guide for guiding the wire to the pin and an exit guide for guiding the wire that has passed through the pin to the path line are disposed on the pass line. Wire brazing device.

(5) In any one of the above (3) to (4), a straightening jig is arranged on the wire exit side of the pin.

(6) The wire brazing device according to any one of the above (3) to (5), wherein a capstan for controlling the wire passing speed on the pass line is provided on the wire exit side of the pin.

According to the present invention, the wire is brazed by locking the wire to the pin extending radially outward of the rotating shaft arranged on the wire pass line and rotating the rotating shaft on the pass line. Therefore, the center of gravity does not shift and high speed rotation is possible.
In addition, the desired brazing can be imparted to the wire.

Hereinafter, the wire brazing method of the present invention will be described in detail with reference to the brazing apparatus shown in FIG.
In order to braze the wire 9 wound around the bobbin 8 using the apparatus shown in FIG. 2, the wire 9 unwound from the bobbin 8 is guided to the brazing part 11 by the entry side guide 10. The brazing portion 11 has a rotating shaft 12 disposed on the pass line L and a pin 13 extending radially outward from the rotating shaft 12. That is, the wire 9 is guided to the through hole 11 a of the brazing part 11 via the entry side guide 10, the wire 9 is guided to the three pins 13 from the through hole 11 a, and the wire 9 is passed between the three pins 13. And lock.

  In such a state that the wire 9 is locked from the pass line L to the pin 13 and passed through the path returning to the pass line L, the disk 11b provided with the through hole 11a is rotated and the rotary shaft 12 is moved on the pass line L. Rotate. When the rotating shaft 12 rotates, the pin 13 that rotates together with the rotating shaft 12 and the wire portion locked to the pin 13 are rotated around the pass line L, so that the wire 9 is brazed. . The brazed wire is returned to the pass line L via the exit guide 14 arranged on the exit side of the brazing portion 11 and then guided to the straightness correction jig 15. Then, after correcting the straightness of the wire with the straightness correcting jig 15, the wire 9 brazed with the bobbin 17 is wound up via the capstan 16.

The rotating shaft 12 of the brazing unit 11 is rotated by a motor 18. Further, the motor 18 also applies a driving force to the capstan 16, and this driving force is adjusted by a transmission 19 disposed between the capstan 16 and the motor 18 to change the passing speed of the wire 9 in the pass line L. Can be made.
Here, the pass line L is a path connecting the wire pass line L in the entry guide 10 and the pass line in the exit guide 14. In addition, the path | route which a wire latches to the pin 13 of the brazing part 11 shall be remove | excluded.

  As described above, in the present invention, the rotating shaft 12 is rotated on the pass line L, and the pin 13 rotating with the rotating shaft 12 and the wire portion locked to the pin 13, that is, separated from the pass line L. By rotating the wire portion locked to the pin in position around the pass line L, stable brazing is obtained.

  Therefore, when such a good brazed wire is used as a reinforcing material for rubber articles, the stretchability of the wire is maintained even after vulcanization molding, the tire contact pressure is dispersed, and a strong gripping force is obtained. Has an advantageous effect.

  Further, since the rotary shaft 12 is arranged on the pass line L, the rotary shaft 12 can be rotated at a desired high speed. This is because the center of gravity of the conventional brazing device and the rotating shaft 12 coincide with each other, so that it is difficult to be affected by centrifugal force due to high-speed rotation.

  Then, the wire 9 unwound from the bobbin 8 is placed on the pass line L on the entry side of the brazing portion 11 and passed through the guide 10 that leads to the pin 13, and the brazed wire 9 is brazed. It is preferably arranged on the exit side pass line L of the part 11 and passed through the exit side guide 14 guided on the pass line L. This is to prevent the brazing from becoming unstable because the wire receives a centrifugal force due to high-speed rotation and bulges radially outward from the rotating shaft 12.

  Then, a straightness correcting jig 15 is arranged on the further exit side of the exit guide 14 disposed on the exit side of the brazing part 11, and a roll disposed in a staggered pattern (not shown in FIG. 2) is used. It is preferable to correct the straightness of the wire.

  Further, the brazing length of the wire can be adjusted by controlling the rotational speed of the capstan 16 by arranging, for example, a transmission 19 between the motor 18 and the capstan 16. Here, the brazing length of the wire is the length t from the peak (valley) to the peak (valley) in the wire after brazing shown in FIG. That is, if the rotation speed of the capstan 16 is increased to increase the passage speed of the wire, the length of the wire portion that is advanced during one rotation of the pin 13 increases, and the peaks (valleys) at the brazing length t As a result, the brazing length t applied to the wire becomes longer. Conversely, the brazing length t is shortened by reducing the wire passing speed.

  Furthermore, in order to adjust the brazing height h of the wire, which is the wave height of the waveform shown in FIG. 3, it is preferable to adjust the amount of biting of the pin 13. Incidentally, the brazing height h of the wire is increased by increasing the biting amount of the pin 13.

  Further, in the present invention, it can be shared with existing components such as jigs, tools or machine parts. That is, in order to obtain a desired brazing, the brazing device needs to reach a level, but the brazing device of the present invention can be brazed to a wire at the level of a conventionally produced brazing device. it can. Therefore, it is possible to avoid an increase in management man-hours due to the new creation of the component parts.

  Using the brazing apparatus shown in FIG. 2, the wire was brazed under the specifications shown in Table 1 with the rotational speed of the rotating shaft set at 5000 rpm. With respect to the wire thus obtained, the wire brazing length t and the wire brazing height h were measured. The results are shown in Table 1.

  Note that the wire brazing length t was measured on a thick paper with a mark placed at a 10-pitch position on the wire after brazing.

  The brazing height h of the wire was measured with a projector (MITUTOYO PROFILE PROJECTOR) after brazing.

It is the figure which showed the tubular type strand wire machine. FIG. 5 is a diagram showing a wire brazing method using the brazing apparatus of the present invention. It is the figure which showed the brazing height and brazing length of the wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wire 2 Bobbin 3 Rotating barrel 4a-4f Wire 5a-5f Bobbin 6 Twist die 7 Preformer 8 Bobbin 9 Wire 10 Input side guide 11 Brazing part 11a Through-hole 11b Disk 12 Rotating shaft 13 Pin 14 Output side guide 15 Straightness correction jig 16 Capstan 17 Bobbin 18 Motor 19 Transmission
C code
L pass line
t Brazing length
h Brazing height

Claims (6)

The path connecting the path on the entry side and the path on the exit side of the wire is defined as a pass line. One wire characterized in that the wire is brazed by rotating the rotating shaft on the pass line and rotating the wire portion locked to the pin at a position separated from the pass line around the pass line. How to make 2. The method of brazing a single wire according to claim 1, wherein a passing speed of the wire is adjusted. A rotary shaft is rotatably arranged on a pass line that is a path connecting the wire entrance side path and the wire exit side path , and extends radially outward of the rotary shaft and at a position separated from the rotation axis. characterized in that a pin wire is engaged, comprising rotatable take the rotating shaft around said rotating shaft Te, one wire shaping apparatus. In Claim 3, The entrance side guide which guides the wire to the pin and the exit side guide which again guides the wire which passed the pin on the pass line are arranged on the pass line . Wire brazing device. 5. A single wire brazing apparatus according to claim 3, wherein a straightness correcting jig is arranged on the wire exit side of the pin. 6. The single wire brazing device according to claim 3, wherein a capstan for controlling a wire passing speed on a pass line is provided on a wire exit side of the pin.

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