JPH0344322Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a thin wire rolling device in which both rollers are forcibly driven.

(Prior Art) In the past, in large rolling mills, it has been common practice to forcibly drive rollers. However, the roller die for forming ultra-fine wires was not supposed to be forcibly driven, but the applicant previously proposed an ultra-fine wire rolling method in which only one roller is driven (Japanese Patent Application Laid-Open No.
−27705).

(Problems to be solved by invention) In conventional ultra-fine wire rolling machines, the reason why a pair of rollers was not forcibly driven was because the diameter of the rollers was small, making it difficult to install a driving force transmission device.
This is because it was difficult to come up with a way to achieve synchronization.

However, in the prior invention, only one roller was forcibly driven, but when rolling a material with a large pile tension, there was a risk that the material after rolling would curve toward the driven roller. It was recognized that this was caused by a difference in the number of rotations of the driving roller and the driven roller.

(Means for solving the problem) However, in this invention, the roller shafts are engaged with each other,
By fixing the interlocking gears, the above-mentioned conventional problems were solved.

That is, in this invention, a driving roller shaft of a grooved roller in which a large number of grooves of successively varying sizes are arranged in parallel, and interlocking gears that mesh with the driven roller shaft are fixed, and the driving roller has a driven roller on both ends thereof. This is a thin wire rolling device in which annular flanges are fitted to both ends, needle rollers are arranged on the outside of the two roller shafts, and a rubber cover is interposed on the outside of the needle rollers. Further, the gear is integrally fixed close to the end surface of the roller. In the above, for example, in a machine equipped with a large number of annular flanges to roll a material coated with a silver sheath with a diameter of 3.0 mm to a diameter of around 0.5 mm, if the material is reduced by 10% with each rolling pass, For example, the grooves to be machined may be sequentially moved to make several passes. Furthermore, since annular flanges are provided on both ends of the driving roller, the annular flanges fit around the outer peripheries of both ends of the driven roller to control the position and hold the grooves of each of the rollers in correct positions.

A thrust bearing is interposed between the shaft end of the drive roller shaft and the presser plate to regulate the axial movement of the drive roller, and the annular collar of the drive roller regulates the thrust of the driven roller. However, the rolling operation is performed at mutually correct positions. The superconducting materials that are currently being researched and developed are provided as powders, so in order to turn them into wires, there is a method of filling the powder into a silver sheath and rolling it as it is to form ultrafine wires. It is considered to be powerful. In such a case, the rolling device of this invention is considered to be extremely useful as a device that can easily form thin wires on a tabletop. As a result of research, when the ratio of the diameter of the rolling roller to the diameter of the processed and formed wire rod is approximately within 30 times, the powder material tends to flow easily and the wire can be easily formed in the length direction.
When it becomes 40 times or more, the powder resistance in the longitudinal direction begins to increase extremely and a strong compressive action is applied. As a result, the metal sheath coating has the effect of flowing in a direction 90 degrees from the length direction of the wire, so there is a risk of cracking due to shear strain. These characteristics of the rolling action are thought to be useful in the development of high-quality superconducting thin wires.

A needle bearing held by a retainer is fitted onto each shaft of the roller, and a half-moon-shaped rubber cover (made of urethane rubber, for example) is interposed on the needle bearing. Therefore, a preload is applied between the two rollers to maintain a gap at all times.

(Function) In this device, gears that mesh with each other are fixed to the roller shaft, so the driven roller rotates at the same number of rotations as the number of rotations given to the drive roller shaft, thereby preventing the workpiece line from bending after processing. can do.

Next, an example of this invention will be described.

(Example) As shown in FIG.
In the figure, 7 and 7 are bearings, and 8 is an annular collar provided on the drive roller shaft, which is fitted onto the outer periphery of the end surface of the driven roller 2. As shown in FIG. 3, this roller device has a thrust bearing 11 interposed between a support 10 fixed to one side of a frame 9 and an end surface of a shaft 3 of a drive roller 1. The annular groove 1 of both rollers can be effectively prevented from moving in the axial direction, and the annular collar 8 can also prevent the axial movement of the driven roller 2.
2 and 13 are always facing each other correctly so that they can be rolled.

Needle bearings 14 and 15 are attached to the shafts 3 and 4, respectively (held in an annular shape by a retainer), and the needle bearings 14 and 1
Since rubber covers 16 and 17 are attached to the rollers 5, the covers maintain a constant gap between the two rollers. Further, cover portions 16a for the gears 5 and 6 are integrally provided on the cover 16.

According to the embodiment, the driven roller 2 and the driving roller 1 rotate at the same rotation speed, so that the upper and lower surfaces of the material are rolled in the same state during rolling. Therefore, when the material 18 in FIG. 6 is fed in from the direction of arrow 19, if the driven roller is of the free type, the material often curves in the direction of arrow 20, but in this invention, the material is curved in the direction of arrow 20. Since the roller and the driven roller rotate at the same speed, the material extends straight in the direction of arrow 21, and the conventional problem has been improved.

(Effect of the invention) This invention has the effect that the gears are fixed to the roller shaft and interlock with each other, so the driving roller shaft and the driven roller rotate at the same number of rotations regardless of the pressure force or reduction. There is. Therefore, the molded product has the effect of being molded straight. Further, since the roller is a grooved roller having a large number of grooves arranged in parallel, it is possible to easily perform a predetermined rolling process by sequentially rolling a wire rod that requires multiple reductions. Furthermore, since the needle bearing is provided with a rubber cover, it is effective to hold the needle bearing correctly and to apply a preload to adjust the roll gap.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the implementation of this invention, Fig. 2 is a front view of the rolling roller device, Fig. 3 is a partially enlarged front view, and Fig. 4 is a perspective view of one roller. FIG. 5 is a perspective view of the cover 16 having a gear cover, and FIG. 6 is a comparative explanatory diagram with the conventional device. 1... Drive roller, 2... Followed roller, 3, 4
... shaft, 5, 6 ... gear, 7 ... bearing.

Claims (1)

[Claims for Utility Model Registration] 1. A driving roller shaft of a grooved roller in which a large number of grooves of successively varying sizes are arranged in parallel, and interlocking gears that mesh with the driven roller shaft, respectively, are fixed, and both ends of the driving roller shaft are fixed. A fine wire rolling device is provided with annular flanges that fit on both ends of a driven roller, a needle roller is arranged on the outside of the two roller shafts, and a rubber cover is interposed on the outside of the needle roller. 2. The thin wire rolling apparatus according to claim 1, wherein the gear is integrally fixed close to the end surface of the roller.