Wire winding bobbin, wire winding method and wire winding apparatus

Abstract

The invention aims to provide a wire winding bobbin, a wire winding method and a wire winding apparatus, which is free of winding a flat-angle wire processed by low endurance by means of load application, can retain an expected winding state without loose and mass winding, and can smoothly sent the flat-angle wire processed by low endurance out from the state winding on the bobbin. The wire winding bobbin (10) transversely winds the flat-angle wire (1b) processed by low endurance on a bobbin cylinder body (201) in a preset transverse screw pitch P, and winds and overlaps the flat-angle wire in the diameter direction of the bobbin cylinder body (201), wherein the preset transverse screw pitch P is set as the value except the value of 1.0 times of a rated screw pitch p, and the preset transverse screw pitch P is set as a value of a thick winding part acquired from that compared with other parts in the circumference of the bobbin, at least one part of the circumference of the bobbin having the flat-angle wire wound thereon is free of plumping up.

Description

technical field [0001] The present invention relates to a wire body winding reel, a wire body winding method, and a wire body winding device for winding a flat wire body having low-strength properties suitable for use as, for example, a lead wire of a solar cell on a reel. Background technique [0002] A solar cell is configured by soldering connection wires to a predetermined region of a silicon wafer serving as a solar cell unit, and transmitting electric power through the connection wires. Since the lead wire for a solar battery needs to follow the deformation of the solar battery cell at its connecting portion with the solar battery cell, it is particularly important to reduce the 0.2% endurance value. Therefore, as a lead wire for a solar cell, it is required to have a so-called low-endurance characteristic with a low 0.2% endurance value, and a boxer with a reduced 0.2% endurance value (hereinafter also referred to as a "low-endurance treated boxer") is used. .). [...

AI Technical Summary

Problems solved by technology

[0012] In addition, when the strip body winding method and device described in the above-mentioned Patent Document 1 are used to wind the strip body treated to reduce the resistance to the reel, for example, the following problem may occur: the strip body roll is pressed by the pressing roller unit. The 0.2% endurance value cannot be kept at a low value when the load is applied to the linear body by winding the outer circumference of the layer.

[0015] In this way, a plurality of layers are laminated in the radial direction of the reel, and among the layers adjacent to the inner and outer sides in the radial direction, the outer layer is more likely to be stacked than the inner layer constituting a substantially flat surface. Sliding, especially prone to the above-mentioned loose winding and scattered winding in the axial direction of the reel

[0016] As mentioned above, in the case of the low-strength treated strip, in order to keep the 0.2% proof value at a low value, the winding layer of the strip cannot be wound under low winding tension or pressed by the pressing roller unit. , especially when the traversing pitch is about 1.0 times the length of the width of the line body, it is easy to cause winding deviation due to the above-mentioned effect, and due to the influence of winding deviation, winding looseness or winding is scattered

[0017] If winding slack occurs, the winding state of the reel cannot be maintained, and the wires rub against each other or easily come into contact with peripheral parts such as the flange of the reel. Therefore, it is difficult to secure the wires due to scratches on the wires or application of loads. the quality of

And, once the above-mentioned loosening of winding occurs, for example, when the wire body is wound on a reel and conveyed, the loosening of the winding will be further aggravated by vibration or the like.

[0018] On the other hand, when the winding is scattered, when the threaded body is sent out from the state where the threaded body is wound on the reel, the sending part of the threaded body, for example, interferes with the scattered part of the winding, so that the threaded body to be sent is caught. Case

[0019] When the strip body is sent out from the state where the strip body is wound on a reel as described above, if the strip body is caught, a load is applied to the strip body, so there is a problem that the excellent quality with a low 0.2% endurance value cannot be ensured.

[0020] In addition, if the threaded body is caught when the threaded body is sent out from the state of being wound on a reel, the threaded body will be broken or the smooth conveyance of the threaded body will be hindered, and all subsequent continuous production lines will need to be interrupted. , leading to a significant drop in production efficiency

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