Cold welding die

A technology of cold pressure welding and dies, which is applied in the field of cold pressure welding molds, can solve problems such as unevenness, inability to fully cold pressure weld, and inability to transport wires, etc., and achieve the effect of stable cold pressure welding

Inactive Publication Date: 2013-09-18
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the wall of the wire rod bites into the groove, there is a concern that the wire rod cannot be disengaged from the wire rod gripping portion and the wire rod cannot be conveyed, and cold pressure welding cannot be performed sufficiently.
In addition, considering the variation in the conductor diameter of the actual wire and the variation in the thickness of the insulating coating, it is not possible to sufficiently absorb the variation in the outer diameter of the wire only by passing through the groove.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] figure 1 It is a perspective view showing the structure of the die for cold press welding according to Embodiment 1 of the present invention, figure 2 It is an exploded perspective view of the structure of the die for cold press welding. image 3 It is a plan view and a cross-sectional view of the structure of the die for cold press welding. The top right of the figure is the top view, the figure on the left side of the top view is the A-A cross-sectional view of the top view, and the figure shown on the lower side of the top view is the B-B cross-sectional view of the top view.

[0029] like Figure 1~Figure 3 As shown, the mold 1 for cold press welding (hereinafter referred to as the mold 1.) is composed of four mold pieces 1a to 1d. Die 1a and die 1b are paired to form a dual die 1A, die 1c and die 1d are paired to constitute a dual die 1B, and these two dual dies 1A and 1B are paired to form a die 1 .

[0030] The action of die 1 will be described in detail late...

Embodiment approach 2

[0062] In the above-mentioned first embodiment, the cross-sectional shape of the coil chuck portion 2 is a vertically long shape formed by aligning the arc-shaped groove portions 2a of the die pieces (1a, 1b), (1c, 1d), but the coil chuck portion The cross-sectional shape of the portion 2 is not necessarily limited thereto as described above. In Embodiment 2 of the present invention, refer to Figure 10~Figure 13 Another example of the cross-sectional shape of the coil clamp portion will be described using four examples. In addition, the structure other than the cross-sectional shape of a coil clamp part is the same as that of Embodiment 1 mentioned above, and the same code|symbol is attached|subjected, and description is abbreviate|omitted.

[0063] Figure 10 The cross-sectional shape of the coil clamp part 2A of the first example shown, and Figure 11 The cross-sectional shape of the coil chuck portion 2B of the second example shown is a vertically long polygon, and both...

Embodiment approach 3

[0071] In Embodiment 3 of the present invention, in addition to the structure of the die 1 in Embodiment 1 described above, grooves extending in the circumferential direction are provided on the inner peripheral surface of the coil clamp portion. Figure 14 It is a cross-sectional view showing the structure of a die for cold press welding according to Embodiment 3 of the present invention, which is the same as that of Embodiment 1. image 3 The A-A section shown corresponds to the figure. The structures other than the grooves provided in the coil clamp portion are assigned the same reference numerals as in the above-mentioned first embodiment, and description thereof will be omitted.

[0072] The coil chuck part 2E according to the third embodiment of the present invention is the same as the above-mentioned first embodiment. The cross-sectional shape is a vertically long shape formed by overlapping two arcs. A plurality of circumferential grooves 8 are provided at predetermin...

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Abstract

A cold welding die (1) of the invention comprises a pair of die pieces ((1a,1b), (1c,1d)) forming double dies (1A,1B) of a coil clamping head portion (2) holding wires (11), wherein the cold welding die (1) allows the double dies (1A,1B) to be abut jointed and the wires held by the coil clamping head portion (2) to be jointed. As for the profile shape of the coil clamping head portion (2), the longitudinal length is greater than the lateral length, and the profile area of the coil clamping head portion (2) is greater than that of the wires (11), when the direction of the wires (11) held by the coil clamping head portion (2) is set as lateral direction, and the direction orthogonal to the lateral direction is set as longitudinal direction.

Description

technical field [0001] The present invention relates to a die for cold pressure welding for connecting wire rods. Background technique [0002] As one of the processes for connecting wire rods, the cold press welding process generally puts a mold between two V-shaped blocks that are arranged opposite to each other on the upper part of the frame of the cold press welder, and makes the shaft supported on the frame rotate. Therefore, the two V-shaped blocks are pressed against each other, and the inserted wires are butt-jointed between the molds by cold pressure welding. The mold is composed of 4 die pieces, which are assembled to form the die hole. The mold is loaded into the V-shaped block in such a manner that the inclined surface of the mold sheet abuts against the inclined surface of the V-shaped block. The wire is inserted into the die hole and the ends are butted against each other. When starting the joining operation, the die is first pressure-welded toward the movin...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B23K20/00
Inventor冈启一郎广田和明桑原克毅坂上笃史秋田裕之
OwnerMITSUBISHI ELECTRIC CORP