JP2733335B2 - Method for manufacturing multi-wire bundle sliding brush material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a material for producing a multi-bundled sliding brush using a trimmer, a potentiometer, and the like.

2. Description of the Related Art Conventionally, in order to manufacture a multi-filament sliding brush material, as shown in FIG. Ladder-shaped strip base material which is wound around an upper roll electrode 4 having an outer peripheral surface and has a groove 3 shallower than the wire diameter and is fed from the same direction onto a lower roll electrode 5 having a flat outer peripheral surface. 6 are seam-welded to each of the rolls 7 by applying pressure to the upper and lower roll electrodes 4 and 5.

(Problems to be Solved by the Invention) By the way, at the time of seam welding between the wire bundle 2 and the support portion 7,
When each of the brush wires 1 and the ridges 7 generate heat, the heat may escape through both the roll electrodes 4 and 5 and may escape to both sides of the band-shaped base member 6. The temperature distribution of the ridges 7 is shown in FIG. It becomes as shown in. For this reason, the brush wire 1 on both the left and right sides of the wire bundle 2
Is lower in temperature than the brush line 1 at the center, and each brush line 1
FIG. 4 shows the welding area of the yoke 7 as shown in FIG.
The welding strength of the brush wires 1 on the left and right sides was unstable.

Therefore, the present invention is to provide a method of manufacturing a multi-bundled sliding brush material in which the heat of the brush wires on the left and right sides is prevented from escaping to both sides of the band-shaped base material during seam welding of the wire bundle and the joint. It is assumed that.

(Means for Solving the Problems) In order to solve the above-mentioned problems, a method of manufacturing a multi-wire bundle sliding brush material according to the present invention comprises: In the method for manufacturing a multi-filamentary sliding brush material to be seam-welded to each of the joints, wires having the same diameter as or slightly larger than the brush wire and having poor weldability are arranged at both left and right outer ends of the bundle, The wire bundle is seam-welded to each of the ridges of the band-shaped base material together with the wires, and then the wires are peeled off from the ridges.

(Operation) As described above, in the method for manufacturing a multi-filament bundle sliding brush material of the present invention, wires having the same diameter or a somewhat larger diameter than the brush wire and having poor weldability are arranged at the left and right outer ends of the bundle. Since the wire bundle is seam-welded together with the strands to each of the ridges of the band-shaped base material, the heat of the brush wires on both the left and right sides generated by the seam welding is impeded by the heat generated by the strands, and both sides of the band-shaped base material are prevented. Therefore, the brush wires on the left and right sides are at the same temperature as the brush wires at the center, the welding strength is substantially equal, and the welding strength of each brush wire of the wire bundle is stable. Further, after the seam welding of the wire bundle, it is easy to peel off the poorly weldable wire from each of the joints, and the wire can be peeled off while being wound up on a roll, and the workability is good.

(Embodiment) An embodiment of the method for producing a multi-filamentary sliding brush material according to the present invention will be described. As shown in FIG.
A 1.6 mm wide wire bundle 2 obtained by aligning and concentrating a brush wire 1 made of Ag 40% -Pd40% -Cu19.5% -Pt0.5% m and having the same width as the wire bundle 2 and shallower than the wire diameter of the brush wire 1 Cr 0.4% -Cu with 12mm width and 120mm outer diameter with 40μm flat rectangular groove 3 on the outer peripheral surface
Around the upper roll electrode 4 consisting of 1000 mm
/ min, which was fed from the same direction onto a lower roll electrode 5 made of Cr0.4% -Cu having a width of 12 mm and an outer diameter of 120 mm having a flat outer peripheral surface and a width of 11 mm and a thickness of 0.2 mm. The upper and lower roll electrodes 4 and 5 are attached to each of the 4 mm long and 0.6 mm wide ridges 7 provided at 2.5 mm intervals in the longitudinal direction of the band base material 6 made of phosphor bronze.
When seam welding is performed by applying pressure to the wire bundle, the wire bundle 2
Wires with poor weldability of the same diameter as brush wire 1
In this example, the Be-Cu wires 8 are arranged, and the wire bundle 2 is seam-welded to the respective ridges 7 of the strip-shaped base member 6 between the upper and lower roll electrodes 4 and 5 together with the Be-Cu wires 8 to form a multi-wire bundle. A moving brush material 9 was obtained.

A multifilamentary sliding brush material 9 of this embodiment and a wire bundle 2 of the same dimensions and the same material as those of the embodiment in which the wires having poor weldability are not arranged at both left and right ends are strips of the same dimensions and the same material as the embodiment. 2. Tensile strength per brush wire 1 in the conventional multi-wire bundle sliding brush material shown in FIG. 2 obtained by seam welding between the upper and lower roll electrodes 4 and 5 on each of the joint portions 7 of the base material 6. The results shown in the following table were obtained by measuring.

As is clear from the above table, the conventional multi-bundled sliding brush material has a large variation in tensile strength per brush wire, whereas the multi-bundled sliding brush material of the embodiment has one brush wire. It can be seen that the variation in the tensile strength per hit is small.

In the above embodiment, the brush wire 1 is attached to both left and right ends of the wire bundle 2.
A wire (Be-Cu wire) with the same diameter and poor weldability was arranged.
The arrangement of the wires having a somewhat larger diameter than the brush wires 1 generates more heat in the wire portions, so that the effect of preventing the heat of the brush wires 1 on both left and right ends from escaping to both sides of the band-shaped base material is obtained. is there. The element wire is not limited to Be-Cu wire, but may be SUS wire,
Further, a metal different from the brush wire to be welded and having different welding conditions, for example, a high melting point material such as W or Mo may be used.

(Effects of the Invention) As can be seen from the above description, according to the method for manufacturing a multi-wire bundle sliding brush material of the present invention, welding of each brush wire of a wire bundle to be seam-welded to each ridge portion of a ladder-shaped strip base material. The strength can be made substantially uniform, and a stable multi-filament bundle sliding brush material having a small variation in the tensile strength of the brush wire can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a method for manufacturing a multi-wire bundle sliding brush material according to the present invention, FIG. 2 is a perspective view showing a conventional method for manufacturing a multi-wire bundle sliding brush material, and FIG. FIG. 4 is a view showing a heat generation distribution of a band portion of the band-shaped base material in the manufacturing method of FIG. 4, and FIG. 4 is a view showing a welding area of the wire bundle with respect to the line portion of each brush wire in the conventional manufacturing method.

Claims (1)

(57) [Claims] In a method of manufacturing a multi-bundled sliding brush material, a wire bundle obtained by horizontally arranging and consolidating a large number of brush wires is seam-welded to each ridge of a ladder-shaped band base material. A wire having the same diameter or a slightly larger diameter than the brush wire and having poor weldability is arranged at the outer end, and the wire bundle is seam-welded to each of the strips of the band-shaped base material together with the wire, and then the wire is A method for manufacturing a multi-filament bundle sliding brush material, comprising: stripping a wire from each member.