JPH1110265A - Wire forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forming device with which a wire is not bent after forming. SOLUTION: A forming device 1 is composed of a 1st shaft 6 and a 2nd shaft 9 supported respectively freely rotatable, a forming roller 10 and a flange part 11 supported with the 1st shaft 6, and a guiding roller 12 and a flange part 13, etc., supported with the 2nd shaft 9, a gear 17 attached firmly to the end of the 1st shaft 6 is engaged with a gear 18 attached firmly to the end of the 2nd shaft 9. A wire 2 is fed in a clearance between the forming roller 10 and the guiding roller 12 while its both side faces are restricted with the flange part 11 and the flange part 13. Therefore, on the wire 2, a recessing part corresponding to the shape of a projection formed on the forming roller 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding device for forming a concave portion in a wire.

[0002]

2. Description of the Related Art The present inventor has devised a molding apparatus for forming a concave portion in a part of a wire. This molding apparatus is shown in FIG.
As shown in FIG. 2, two shafts 100 and 200 arranged in parallel at a predetermined interval, a molding roller 110 supported on one shaft 100, and a pair of rollers provided on both sides of the molding roller 110 Guide portions 210 supported by the flange portions 120 and 130 and the other shaft 200
Etc. The two shafts 100, 200
The shafts 100 and 200 are rotatably supported by the base 300 via bearings 140 and 220, respectively. Thus, the two shafts 100 and 200 can rotate synchronously in opposite directions by rotating the gears 150 and 230.

The forming roller 110 is provided with substantially the same width as the wire 400, and has a projection 111 (FIG. 8) on a part of the outer peripheral surface.
Reference). A pair of flange portions 120, 130
Are both provided with a larger diameter than the molding roller 110, and rotate integrally with the molding roller 110. Guide roller 21
No. 0 is provided in substantially the same width as the wire 400 as in the forming roller 110, and is disposed at the same position in the axial direction as the forming roller 110. However, the outer peripheral portion of the guide roller 210 is inserted with a small clearance between the pair of flange portions 120 and 130, and is inserted between the outer peripheral surface of the guide roller 210 and the outer peripheral surface of the molding roller 110. A gap is secured by the thickness of the wire 400.

According to this molding apparatus, one of the gears 150
Is rotated, the gear 23 meshing with the gear 150
0 rotates in synchronization with each gear 15
Two shafts 100, 200 to which 0, 230 are fixed
Are rotated in opposite directions to each other, and each shaft 100, 200
Roller 110 and a set of flanges 1 supported by
20 and 130 and the guide roller 210 are respectively shown in FIG.
Rotate in the direction of the arrow. At this time, the wire 400 is fed in the direction of the arrow in FIG. 8 in synchronization with the rotation of the rollers 110 and 210. As a result, the protrusion 111 provided on the forming roller 110 is moved between the guide roller 210 and the wire 4.
00 to plastically deform the protrusion 11.
A recess 410 corresponding to the shape of No. 1 is formed in the wire 400.

[0005]

However, in the above-described forming apparatus, when the concave portion 410 is formed in the wire 400,
The wire 400 pressed by the protrusion 111 is deformed in the feed direction and the width direction of the wire 400. At this time, the deformation of the wire 400 in the feed direction is absorbed by the deformation of the length of the wire 400, but the deformation of the wire 400 in the width direction is, as shown in FIG. 7, a distortion (force) in the width direction. P1 and P2 are flanges 12
0, 130, both flange portions 120, 13
Biting occurs for 0. As a result, as shown in FIG.
There was a problem that the shaft 100 was bent in the rotation direction of one of the shafts 100 because the shaft 100 could not be separated from the space 0. The present invention
An object of the present invention is to provide a wire forming apparatus in which a formed wire is not bent.

[0006]

[Means for Solving the Problems]

(Means of Claim 1) A first flange portion and a second flange portion for regulating both side surfaces of a wire are provided, and the first flange portion is disposed adjacent to one end of the first roller. The second roller rotates integrally with the first roller, and the second flange portion is disposed adjacent to the other end of the second roller and rotates integrally with the second roller. In this case, even if the wire is deformed in the width direction at the time of molding and biting occurs between the two flange portions, the first flange portion and the second flange portion rotate in opposite directions.
And the biting force of the second flange portion are offset. As a result, the formed wire is separated from the first flange portion and the second flange portion in the tangential direction of the two flange portions, and is bent in the rotation direction of the first flange portion or the second flange portion. The wire can be pulled out substantially straight on the extension in the feed direction, and the wire is formed into a predetermined shape. The forming section for forming the wire rod may be provided on only one of the first roller and the second roller, or may be provided on both rollers.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front sectional view of a wire rod forming apparatus (hereinafter, abbreviated as a forming apparatus). Forming device 1 of the present embodiment
Is used to form a coil wire 2 (hereinafter referred to as a wire 2) used for an armature coil such as a starter motor. The base 3 is rotatably supported on the base 3 through bearings 4 and 5. The first shaft 6, also the base 3
The second shaft 9 rotatably supported by bearings 7 and 8 on the shaft, and the forming roller 1 supported by the first shaft 6
0, a flange portion 11, a guide roller 12 supported by the second shaft 9, a flange portion 13, and the like.
The base 3 is divided so that the shafts 6 and 9 can be assembled, and is fixed by bolts 14.

The first shaft 6 and the second shaft 9 are
The circlips 15 and 16 are arranged in parallel at a predetermined interval, and are positioned in the axial direction by the circlips 15 and 16, respectively. Gears 17 and 18 are fixed to ends of the shafts 6 and 9 protruding outward from the base 3, respectively, and the gears 17 and 18 are meshed with each other. Therefore, the two shafts 6, 9 can rotate synchronously in opposite directions by rotating the gears 17, 18. The forming roller 10 is disposed substantially at the center of the first shaft 6 in the axial direction, is provided with substantially the same width as the wire 2, and has a projection 10 a on a part of the outer peripheral surface (the forming part of the present invention / FIG. 4). reference)
have. The height h (see FIG. 4) of the protrusion 10a is set smaller than the thickness H of the wire 2. The flange portion 11 regulates one side surface of the wire 2 and is provided adjacent to one axial end of the forming roller 10. The outer diameter of the flange portion 11 is
Is set to be larger than the outer diameter by the thickness of the wire 2 or more.

The guide roller 12 is provided at substantially the same width as the wire 2 and is disposed at the same position in the axial direction as the molding roller 10. However, a gap is secured between the outer peripheral surface of the guide roller 12 and the outer peripheral surface of the forming roller 10 by the thickness of the wire 2. The flange portion 13 regulates the other side surface of the wire 2, and is provided adjacent to the other axial end of the guide roller 12. The outer diameter of the flange portion 13 is set to be larger than the outer diameter of the guide roller 12 by at least the thickness of the wire 2. The wire 2 synchronizes with the rotation of the forming roller 10 and the guide roller 12,
12 and is fed into the gap formed between them.

Next, the operation of this embodiment will be described. When one of the gears 17 is rotationally driven by a motor, a handle, or the like, the gears 18 meshing with the gear 17 rotate synchronously, so that the two shafts 6, 9 to which the respective gears 17, 18 are fixed are opposite to each other. 2, the forming roller 10 and the flange 11 supported by the first shaft 6 and the guide roller 12 and the flange 13 supported by the second shaft 9 rotate in the direction of the arrow in FIG. 2. I do. At this time, the wire 2 is fed in the direction of the arrow in FIG.

As a result, the protrusion 10 a provided on the forming roller 10 starts forming the wire 2 in the radial direction with the guide roller 12. At this time, the wire 2 is deformed in the feed direction and the width direction of the wire 2 by being formed in the radial direction. The deformation in the feed direction is absorbed by the elongation of the wire 2, but the deformation in the width direction is caused by the strain forces P1, P2 in the width direction acting on the flange portions 11, 13 as shown in FIG. Biting occurs on both flange portions 11 and 13. This biting is released when the end surfaces of the flanges 11 and 13 are completely removed from the wire 2 with the rotation of the flanges 11 and 13. As a result, a recess 2a corresponding to the shape of the projection 10a is formed in the wire 2 as shown in FIG.

(Effects of the present embodiment) According to the present embodiment, the flange portion 11 and the flange portion 1 for restricting both side surfaces of the wire 2 are provided.
3 are supported on separate shafts 6, 9 and rotate in opposite directions. For this reason, the wire 2 is pulled in the rotation direction of the flange portion 11 by the strain force P1 acting on the flange portion 11, and is also pulled in the rotation direction of the flange portion 13 by the strain force P2 acting on the flange portion 13. As a result, the force pulled in the rotation direction of the flange portion 11 and the force pulled in the rotation direction of the flange portion 13 cancel each other, so that the formed wire 2 is bent in the rotation direction of the flange portion 11 and the flange portion 13. However, as shown in FIG. 4, it can be formed substantially straight on the extension in the feed direction.

(Modification) In the above embodiment, the projection 10a is provided only on the molding roller 10, but the projection may also be provided on the guide roller 12. Also, the protrusion 10a
Is not limited to one location, and may be provided at a plurality of locations. Further, a recess corresponding to the protrusion 10 a of the molding roller 10 may be provided on the guide roller 12. First shaft 6
And the second shaft 9 comprises bearings 4, 5, and 7, respectively.
Although it is supported on both sides by 8, it is also possible to adopt a structure in which only one side is supported by a bearing. When the wire 2 is formed by the protruding portion 10a, the driving torque to the first shaft 6 increases, but the fluctuation can be avoided by rotating the first shaft 6 with a driving force considerably larger than the fluctuation torque. It is.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a molding apparatus.

FIG. 2 is a perspective view of a forming roller and a flange portion, and a guide roller and a flange portion.

FIG. 3 is an explanatory view showing a strain force applied to a flange portion during wire forming.

FIG. 4 is a side view showing a forming process of the wire rod.

FIG. 5 is a front sectional view of the molding apparatus.

FIG. 6 is a perspective view of a forming roller and a flange portion, and a guide roller and a flange portion.

FIG. 7 is an explanatory diagram showing a distortion force applied to a flange portion during wire forming.

FIG. 8 is a side view showing a forming process of the wire rod.

[Explanation of symbols]

 Reference Signs List 1 wire rod forming device 2 wire rod 6 first shaft (first rotating shaft) 9 second shaft (second rotating shaft) 10 forming roller (first roller) 10a protrusion (forming portion) 11 flange Part (first flange part) 12 Guide roller (second roller) 13 Flange part (second flange part)

Claims (1)

[Claims] A first roller having substantially the same width as a wire rod; a first roller disposed adjacent to one end of the first roller;
A first flange portion having an outer diameter larger than that of the first roller, a first rotating shaft rotatably supporting the first roller and the first flange portion, and a width substantially equal to that of the wire. A second roller disposed radially away from the first roller by the thickness of the wire.
And the second roller is disposed adjacent to the other end of the second roller.
A second flange portion having an outer diameter larger than that of the first roller, and a second rotation shaft rotatably supporting the second roller and the second flange portion, wherein the first roller And a forming part for forming the wire rod is provided on an outer peripheral surface of at least one of the second roller and the both side faces of the wire rod are regulated by the first flange part and the second flange part. Meanwhile, by rotating the first roller and the second roller in directions opposite to each other and passing the wire between the two rollers, the wire forming the wire into a predetermined different shape by the forming unit is performed. Molding equipment.