JPH069384Y2 - Triple capstan for coated wire cooling - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) This invention uses a metal wire coated with rubber or resin, such as an electric wire,
The present invention relates to a covered wire cooling capstan that is reciprocally wound between a pair of capstans that sandwich a cooling unit such as a water tank to cool the covered wire.

(Prior Art) A conventional cooling capstan is, as illustrated in FIG.
A pair of capstans 1 and 2 sandwiching the water tanks 4 and 5 winds around the wire W just coated from a coating device (not shown) and draws it out, and an intermediate water tank 4 for winding the wire back and forth.
By passing the wire W back and forth through 5, the same cooling effect as when passing through a long water tank is obtained.

(Problems to be Solved by the Invention) A conventional technique in which a grooved capstan is used to draw out a heated rubber or a wire just coated with resin from a coating apparatus and at the same time, the coating is cooled is rational. But rubber,
The outlet die of the coating device for extruding resin or the like along the core wire is replaced according to the wire type, but the cooling capstan is not replaced. Therefore, a thin core wire with a thin coating thickness and a thick core wire with a thick coating thickness are pulled out and cooled with the same capacity except for the number of windings.

In the case of electric wires, if the copper core wire is thin, if it is repeatedly passed between a conventional double capstan and passed through a relatively long water tank, the core wire will be stretched by tension, the cross-sectional area will decrease, and cold working There was a quality problem that the elongation test value decreased.

The development target of this device is a cooling capstan that can be used according to the type and size of the coated wire.

(Means for Solving the Problems) This invention relates to a covered wire cooling capstan in which a metal wire covered with rubber, resin or the like is reciprocally wound around a pair of capstans sandwiching a cooling unit to cool the metal wire. One of the pair of capstans is a twin capstan, and the twin capstans are a pair of capstans that are synchronously driven side by side in the front-back direction so as to face the covered wire passing through the cooling section. If the coated wire is thick, only one twin capstan is used as usual, if it is thin, the coated wire is wound back and forth between the twin capstans several times, and then returned to the other capstan via the cooling unit. It is a triple capstan for cooling a covered wire, which is characterized in that it is obtained.

(Operation) This device has the conventional problem, that is, when making a thin covered wire,
It started by investigating the causes of insufficient cross-sectional area and elongation of the core wire. As described above, the reason for this is that, while the thin coated wire is laid between the capstans at both ends of the water tank and reciprocated many times, the core wire is stretched and hardened by cold working. It was Then, as a countermeasure, this device uses a twin capstan in which one of the pair of capstans sandwiching the water tank is arranged and interlocked.

In this way, by making it a triple capstan, the thick wire is wound back and forth between the capstan in front of the water tank (cooling part) and one twin capstan at the end of the water tank as usual,
It can be passed through the water tank as many times as necessary. And in the case of a thin wire, when it comes out of the coating device, first pass it through a water tank to cool it, and then wrap it around the twin capstan a required number of times to apply the coated wire tension for pulling towing according to the number of wrapping. The weakened wire is returned to the water tank, and the tension is weakened, and the coated wire is sent to the next process through the capstan on the other side.

It should be noted that a covered wire whose coating is not yet solid cannot be wound around a single capstan many times like a wire rope to reduce the tension on the back. This device uses twin capstans to wind the covered wire as many times as desired regardless of cooling to obtain the required traction force, and to reduce the internal stress of the wire itself depending on the number of times of winding, to the cooling part such as a water tank. Oriented to prevent elongation during cooling.

(Embodiment) FIG. 1 is an elevational view of an embodiment of the present invention, and the plan view thereof is a little complicated, so the drive mechanism explanatory view of FIG. 2 is applied.
As in FIG. 3, a pair of capstans 1 and 2 sandwiching water tanks (running water tanks) 4 and 5 has a capstan 2 and a capstan 3 having a twin relationship with each other. Conventional capstans 1, 2
Also has the same shape and a U-shaped groove (see FIG. 2) on the outer periphery,
Capstan 3 is twinned with Capstan 2. The drive mechanism of each capstan is one motor 6, chain coupling 7, speed reducer 8, pulley 9, belt 9a, bearing 10,
Rotary encoder 11, coupling 12, brake 1
It is composed of 3 and gears 14 etc.

In FIGS. 1 and 2, a covered wire W drawn from a covering device (not shown) horizontally enters the capstan case 15 in a direction of contacting a point A of the capstan 1 from the left end of the drawing, and
It passes with or without touching the point, passes through the water tank 4, passes with or without touching point E of the capstan 2, and is wound around a half circumference from point B to point C of the capstan 3.

When the covered wire W is thick, the wire W enters the aquarium 5 from the point C of the capstan 3 along the point D of the capstan 2 and is wound around the capstan 1 for half a turn from the point F and then again from the point A. It passes through the water tank 4, wraps around the capstan 3 for half a round, and then wraps around the capstan 1 through the water tank for half a round, and winds as many times as necessary for the coated wire drawing output. Finally, from point F of capstan 1 through guide pulley 17, go to the next step.

When the covered wire W is thin, the approaching wire W is wound around a half circumference of the capstan 3, that is, between BC points, as described above, and then wound around a half circumference of the adjacent capstan 2, between D and E points. And the points E, B, C and D and the twin capstans 2 and 3 are wound around the required number of times. Twin Capstan 2,
In the arrangement of 3, the wires W are arranged so as to be offset by a half width of the circumferential groove so that the wire W can be easily wound.

The tip of the covered wire W wound around the twin capstans 2 and 3 reaches the point F of the capstan 1 from the point D via the water tank 5 and proceeds to the next step via the guide pulley 17.

Both of the water tanks 4 and 5 in this example are running water gutters, and are covered when used.
Pour water except for 18. Water is drained from both ends of the gutter into the capstan cases 15 and 16 on both sides.

In the above-mentioned embodiment, the capstan on the side remote from the coating device has a twin. However, if there is a cooling part on the way from the coating device to this capstan part, the capstan near the coating device may have a twin. Then, the covered wire passing through the water tank between the capstans can be made to have a tension that does not cause permanent elongation in both reciprocation.

Although one embodiment has been described above, the invention can be variously changed and applied within the scope of the invention by a well-known technique of a designer who carries out the invention. There is a lot of room for the practitioner to use, for example, a cooling means other than a water tank is used as the cooling part, or three capstans are combined in a combination other than the above embodiment depending on the characteristics and dimensions of the covered wire.

(Effect of the Invention) This invention has clarified the problem that the conventional capstan for cooling a covered wire has to handle the covered wire having different characteristics and dimensions in the same manner except the number of times of winding. , The cause was analyzed and effective countermeasures were specified.

Since one side of the capstan sandwiching the cooling unit is a twin capstan, the thick covered wire can be passed through the cooling unit each time it is wound around both side capstans and wound.

In the case of a thin covered wire, it can be wound around the capstan by cooling once and then wound around the twin capstan several times to generate the required traction force. Like the thick wire, the thin coated wire that stretches easily eliminates the conventional mistake of repeatedly reciprocating the long cooling section, so problems such as reduction of core wire cross-sectional area due to elongation during cooling and reduction of elongation test value are solved. did.

[Brief description of drawings]

FIG. 1 is an elevational view of an embodiment of the present invention, FIG. 2 is an explanatory view of a planar drive mechanism thereof, and FIG. 3 is an elevational view of a prior art. 1, 2, 3 ... Capstan, 4, 5 ... Cooling unit (water tank).

Claims (1)

[Scope of utility model registration request] 1. A covered wire cooling capstan in which a metal wire coated with rubber, resin, or the like is reciprocally wound between a pair of capstans sandwiching a cooling unit to cool, and one of the pair of capstans is a twin. The twin capstans are a pair of capstans that are synchronously driven side by side in the front-rear direction so as to face the covered wire that has passed through the cooling section, and if the covered wire is thick, Only one twin capstan is used as usual, and if it is thin, it can be wound back and forth between the twin capstans several times and then returned to the other capstan via the cooling unit. Triple capstan for covered wire cooling unit.