JP5254887B2 - Wire rod winding device and winding method - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire winding device and a winding method (hereinafter also simply referred to as “winding device” and “winding method”), and more specifically, when a plurality of wires are fed simultaneously and wound on a winding spool. This relates to improvements in winding technology.

  In recent years, pneumatic radial tires, particularly passenger car tires, are required to have low rolling resistance, good riding comfort, and low cost in order to improve the fuel efficiency of automobiles. As an improved technique for that purpose, there has been proposed a technique in which twisted steel cords are simplified and steel wires are arranged in parallel bundles.

  For example, Patent Documents 1 and 2 disclose a technique in which a metal wire is embedded in rubber in units of bundles arranged and aligned in the belt width direction without twisting. In these Patent Documents 1 and 2, it is described that rolling resistance and ride comfort are improved in the tire having the untwisted steel cord obtained in this way.

  In general, a rubber sheet in which a non-twisted steel cord is embedded is manufactured as follows. First, spools are arranged in a number corresponding to the number of driving required for the rubber sheet, and the steel wires wound around the spools are drawn out from the predetermined number of spools, are aligned and bundled, and then introduced into the guide plate. . Next, after the steel wire bundle introduced into the guide plate is guided to the comb-teeth roll, the rubber sheet in which the untwisted steel cord is embedded is obtained by rolling and combining with the separately introduced rubber sheet in the calendar. can get.

  As an improved technique related to such a rubber sheet manufacturing method, for example, Patent Document 3 discloses a technique in which a plurality of wires are wound around a spool and a plurality of wires are simultaneously fed from each spool to a guide plate. Yes. According to the method described in Patent Document 3, it is possible to obtain a merit that the introduction angle when aligning the wire rods with the guide plate can be reduced and the wire rod aligning operation can be facilitated.

JP-A-5-5290 (Claims etc.) JP-A-11-208210 (Claims etc.) JP-A-5-278146 (Claims etc.)

  However, in the method of feeding a plurality of wires to the guide plate at the same time from a spool wound with a plurality of wires described in Patent Document 3, even if the driving operation is started after performing the aligning operation with the guide plate, Due to the difference in winding circumference (storage length) of each wire rod in the same spool at the time of feeding, the wire rod other than the wire rod with the shortest storage length may sag, and the workability may be significantly impaired.

  Accordingly, an object of the present invention is to improve the winding process of the wire to the spool, thereby preventing the workability from being lowered due to the slack of the wire unwound from the spool in the process of driving the wire into the rubber sheet. Is to provide a winding device and a winding method.

  As a result of intensive studies, the inventor has improved the winding process of the wire to the winding spool, which is the previous process of the driving process, so that the winding circumferential difference of each wire wound on the winding spool is substantially zero. Thus, the inventors have found that the occurrence of problems due to the slack of the wire can be prevented, and have completed the present invention.

That is, the wire winding device of the present invention is a wire winding device that simultaneously draws out a plurality of wires from a plurality of bobbins wound with the wire and winds them on a winding spool.
A capstan that simultaneously feeds a plurality of wires from the plurality of bobbins in the same length, and a plurality of wires that are formed so as to be movable parallel to the axial direction of the take-up spool, and fed from the capstan, A traverse guide capable of forcibly feeding to the take-up spool, and a magnet is disposed on the winding core of the take-up spool.

  In the wire winding device of the present invention, it is preferable that the maximum speed difference between the plurality of wires in the capstan is less than 0.01%. The traverse guide preferably has a magnetic force at a contact portion with the plurality of wires. Furthermore, the traverse guide preferably rotates at a speed higher than the traveling speed of the plurality of wires, and more preferably, the rotational speed difference of the traverse guide is compared with the traveling speed of the plurality of wires. 0.01% or more and 3% or less.

  Further, the wire rod winding method of the present invention uses the wire rod winding apparatus of the present invention to simultaneously wind a plurality of wires from a plurality of bobbins around which the wire rods are wound onto a winding spool. It is a feature.

  According to the wire winding device and winding method of the present invention, in the winding process of the wire to the spool, which is the previous process of the driving process, the winding circumferential difference between the wires wound on the spool is zero. be able to. As a result, even when a plurality of wire rods are simultaneously fed from a spool around which a plurality of wire rods are wound and used, it is possible to prevent a decrease in workability due to the slack of the wire rods in the subsequent wire rod driving process. Become.

It is a schematic explanatory drawing which shows the winding apparatus of the wire which concerns on one embodiment of this invention. It is explanatory drawing which concerns on the evaluation method of the winding state of the wire in an Example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, the schematic explanatory drawing of an example of the winding apparatus of the wire rod of this invention is shown. The winding device shown in the figure is a device that simultaneously feeds a plurality of wires 1 from a plurality of bobbins 10 around which the wire 1 is wound, and winds them on a winding spool 20. In the present invention, specifically, for example, 2 to 5 wires can be wound up simultaneously.

  As shown in the figure, the winding device of the present invention is capable of rotating in parallel with the capstan 11 for simultaneously feeding a plurality of wires 1 from a plurality of bobbins 10 and the axial direction of the winding spool 20. The traverse guide 12 is provided. A magnet 13 is disposed on the winding core of the winding spool 20. In the winding device of the present invention, as described in detail below, the capstan 11 has a function of feeding each wire 1 fed from each bobbin 10 to the winding spool 20 side with the same length, By causing the traverse guide 12 and the magnet 13 to perform a function of winding up the fed wire rods 1 with the same circumferential length, a plurality of wire rods 1 can be stored in the winding spool 20 with the same circumferential length. It became.

  The capstan 11 has a function of accurately measuring each wire 1 fed from each bobbin 10 and feeding a plurality of wires 1 to the take-up spool 20 side at the same length. Here, in order to accurately measure each wire 1, each wire 1 unwound from each bobbin 10 is wound around the capstan 11 one or more times, and each wire 1 is completely wound around the capstan 11. Drive while gripping. Thereby, the length of each drawn-out wire 1 becomes the same. In particular, when the tension of the unwinding wire is as low as about 0.29 N or less, for example, the wire 1 is wound around the capstan a plurality of times, for example, a few times, in order to securely grip the wire with the capstan. It is preferable.

  Here, the plurality of wires 1 drawn out from the capstan 11 travel to the take-up spool 20 side in parallel with each wire, but even if each wire is drawn out with the same length, the take-up spool 20 side If the winding circumference of each wire is apparently changed due to uneven winding or the like, and winding is performed as it is, sagging occurs in some wires. Therefore, in the present invention, the rotating traverse guide 12 is used to forcibly send the excess portion of the wire to the winding side and to the winding spool 20.

  Furthermore, in the present invention, in order to forcibly wind up the surplus wire that has been sent out to the take-up spool 20, the magnet 13 is disposed on the winding core of the take-up spool 20, and the surplus wire is taken up. Adsorbed to the spool 20. Since the wire rod adsorbed on the winding spool 20 is then wound up by the subsequent wire rods, the plurality of wire rods fed out at the same length thereby all have the same circumferential length. Is wound up and stored.

  In the present invention, only the point that a plurality of wires are stored in the take-up spool with the same circumference by the combination of a specific capstan 11, traverse guide 12, and magnet 13 is important. About conditions, it can determine suitably according to the applied wire etc., and there is no restriction in particular.

  The capstan 11 used in the present invention only needs to be capable of simultaneously feeding out a plurality of wires 1 with high accuracy. Preferably, a high-precision capstan having a maximum speed difference of less than 0.01% between a plurality of wires that are fed out is used. If the maximum speed difference between the plurality of wires is 0.01% or more, the length of each wire becomes non-uniform, and the desired effect of the present invention may not be obtained.

  The traverse guide 12 only needs to be capable of forcibly feeding a plurality of wires sent out from the capstan 11 by rotation to the winding side, and is preferably a slip-type traverse guide capable of high-speed rotation. Is used. In particular, it is preferable to use the traverse guide 12 that rotates at a higher speed than the traveling speed of the plurality of wires, and more preferably, the rotational speed difference of the traverse guide 12 is 0 as compared to the traveling speed of the plurality of wires. A material having a content of 0.01% or more and 3% or less is used. The reason why the traverse guide 12 that rotates at a higher speed than the traveling speed of the wire is suitable is that the slack of the wire between the capstan 11 and the traverse guide 12 can be eliminated. Further, if the rotational speed of the traverse guide 12 is too high than the traveling speed of the wire, it is not preferable because there is a high possibility that the surface of the wire will be damaged. Since the traveling speed of the wire is determined by the peripheral speed of the capstan 11, the rotational speed of the traverse guide 12 may substantially satisfy the above condition in comparison with the peripheral speed of the capstan 11.

  Furthermore, it is preferable that the traverse guide 12 has a magnetic force at the contact portion with the plurality of wires 1. Thereby, the surplus part of a wire can be more reliably sent out to the winding side.

  Furthermore, the magnet 13 disposed and used on the winding core of the take-up spool 20 may be any magnet as long as it has a magnetic force capable of attracting the surplus portion of the wire 1 to the take-up spool 20, and is not particularly limited. Absent.

  Moreover, the winding method of the wire rod of the present invention can be any one as long as a plurality of wire rods are simultaneously wound on a winding spool from a plurality of bobbins wound with the wire rod using the winding device of the present invention. Well, in this way, in the obtained winding spool, the winding circumferential difference between the wound wires can be made substantially zero.

Hereinafter, the present invention will be described in more detail with reference to examples.
(Examples 1-6)
Using the wire winding device shown in FIG. 1, a plurality of wires were wound on a winding spool according to the conditions shown in the following table. A high carbon steel wire having a wire diameter of 0.225 mm (0.21 mm, 0.34 mm) was used as the wire, which was simultaneously fed from three bobbins and wound on a winding spool. The tension of the unwinding wire was 0.98N.

  As the capstan 11, a high-precision capstan 11 having an outer diameter of 300 mmφ and a maximum speed difference of 0.005% between the drawn wires was used. The wire was driven around the capstan 11 by being wound once or twice. Further, as the traverse guide 12, a slip type that has a magnetic force at the contact portion with the wire, is movable in parallel with the axial direction of the take-up spool, and can rotate is used. Further, a magnet was appropriately disposed on the winding core of the winding spool 20, and the magnetic force on the surface of the winding core was adjusted to the value shown in the table below.

(Comparative Example 1)
As a winding device, a conventional device using a driven traverse guide 12 that does not have a capstan 11 and has no magnetic force at the contact portion with the wire rod is used to wind the wire rod as in the embodiment. It was. Further, no magnet was disposed on the winding core of the winding spool.

(Comparative Example 2)
The wire was wound up in the same manner as in Example 4 except that no magnet was disposed on the winding core of the winding spool.

  As shown in FIG. 2, the winding result of the wire rod is that the three wire rod terminals 1 are fed out by 50 m from the winding spool 20 wound with the wire rod in each of the examples and the comparative examples, and the maximum slack width between the wire rods. The case where h was 50 mm or less was evaluated as ◯, the case where it exceeded 50 mm and 100 mm or less was evaluated as Δ, and the case where it exceeded 100 mm was evaluated as ×. The results are also shown in the table below.

  From the results of Example 3 in the above table, if the peripheral speed difference between the traverse guide and the capstan is zero, the surplus wire cannot be forcibly sent to the take-up spool 20, and the wound wire It can be seen that there is a slight difference in winding circumference. Further, in Example 4 in which the circumferential speed difference of the traverse guide was changed to + 3%, a good winding result was obtained, but in Example 5 in which the circumferential speed difference was + 4%, the circumferential speed difference was too large. The traverse guide has been damaged. Furthermore, in Example 6 in which the magnetic force acting on the take-up spool was lowered, sagging occurred in the wire during winding, resulting in a slight difference in winding circumference.

1 Wire 10 Bobbin 11 Capstan 12 Traverse Guide 13 Magnet 20 Take-up Spool

Claims (6)

A wire winding device that simultaneously draws out a plurality of wires from a plurality of bobbins around which wires are wound and winds them on a winding spool,
A capstan that simultaneously feeds a plurality of wires from the plurality of bobbins in the same length, and a plurality of wires that are formed so as to be movable parallel to the axial direction of the take-up spool, and fed from the capstan, And a traverse guide capable of forcibly feeding to the take-up spool, and a magnet is disposed on the winding core of the take-up spool.   The wire winding device according to claim 1, wherein the maximum speed difference between the plurality of wires in the capstan is less than 0.01%.   The wire winding device according to claim 1 or 2, wherein the traverse guide has a magnetic force at a contact portion with the plurality of wires.   The wire rod winding device according to any one of claims 1 to 3, wherein the traverse guide rotates at a higher speed than the traveling speed of the plurality of wire rods.   5. The wire winding device according to claim 4, wherein a speed difference of the traveling speed of the plurality of wires in the rotational speed of the traverse guide is 0.01% or more and 3% or less.   The wire rod winding device according to any one of claims 1 to 5, wherein a plurality of wire rods are simultaneously wound on a winding spool from a plurality of bobbins around which the wire rod is wound. Winding method of wire.

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