JPH0544958U - Extra fine wire winding device - Google Patents

Abstract

(57) [Summary] [Object] To obtain an ultrafine wire winding device that can be applied to both the aligned winding method and the cross winding method in the ultrafine wire winding device. [Structure] In an ultrafine wire winding device, a guide pulley is movably arranged with respect to a winding spool.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an extra fine wire winding device in a production device of extra fine wires such as gold, copper, and aluminum used for bonding ICs and transistors.

[0002]

[Prior Art]

 Extra-fine wires used for bonding ICs and transistors are finished products after processing such as drawing, cleaning, annealing and rewinding. The method of winding the ultrafine wire in the rewinding process in the treatment process can be roughly classified into an alignment winding method and a cross winding method. Which winding method is used depends on the type of bonding machine used in the subsequent process.

[0003]

[Problems to be solved by the device]

 As shown in FIG. 2, the aligned winding method is a method in which the winding position on the winding spool 6 is shifted by the diameter of the ultrafine wire 7 (several tens of microns) each time the winding spool 6 is rotated once. Is. In the case of this winding method, when the guide pulley 5 of the extra fine wire 7 is brought close to the take-up spool 6 and is wound at a high speed, it is directly affected by the eccentric rotation of the pulley 5 and the shake of the pulley fixing part, and the extra fine wire is wound. The position is displaced and the wire bites. For this reason, in the case of aligned winding, there is a disadvantage that the winding speed must be low and the productivity cannot be improved.

On the other hand, the cross winding method, as shown in FIG. 3, is a method of winding the ultrafine wire 7 while rotating the winding spool 6 several times while traversing for a certain winding width. In this winding method, the reversal time at the turn and the positioning of the ultrafine wire during traverse affect the bite of the wire. In the case of this winding method, if the distance between the extra-fine wire guide pulley 5 and the winding spool is increased, the positioning at the turn portion becomes unfavorable and the wire often bites. Therefore, in cross winding, the distance L (see FIG. 4) between the guide pulley and the winding spool must be shortened.

As described above, the distance between the guide pulley and the take-up spool needs to be selected to be different between the aligned take-up method and the cross take-up method in consideration of productivity and quality. However, the conventional technology has a drawback in that it requires a specialized machine corresponding to any one of the winding methods.

Therefore, an object of the present invention is to provide an ultrafine wire winding device which can be applied to both the aligned winding method and the cross winding method.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a take-up spool, a guide pulley for guiding a fine wire to the take-up spool, and a moving means for moving the guide pulley with respect to the take-up spool. The ultrafine wire winding device is used.

[0008]

【Example】

 Next, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an ultrafine wire winding device of the present invention.

In FIG. 1, a guide pulley 5 that guides an ultrafine wire 7 toward a take-up spool 6 is rotatably supported by a movable base 3 via a support shaft 4. The movable pedestal 3 is attached so as to be vertically movable along the guide member 2. The movement of the moving base 3 is performed by rotating the adjusting knob 1.

With this configuration, by rotating the adjusting knob 1, the guide pulley 5 can be moved up and down together with the moving base 3, that is, the distance to the take-up spool 6 can be adjusted. The take-up spool 6 is configured to be rotated as indicated by arrow A and, at the same time, traversed in the horizontal direction as indicated by arrow B.

Example 1 Next, an experimental example using the ultrafine wire winding device of the present invention will be described. The experiment was conducted under the following conditions. That is, the winding speed of the ultrafine wire is 70 mm / min, the winding tension is 3 g, the diameter d of the guide pulley (FIG. 4) is 25 mm, and the height h of the brim of the winding spool is h (FIG. 4). Was set as 5 mm. At this time, the distance L between the guide pulley and the winding spool was set to 30 to 50 mm for the aligned winding, and the maximum distance L was 20 mm for the cross winding. As a result, in both cases, the number of wire bites (here, the number of wire bites means the external force applied when the take-up spool that has finished winding is reversely rotated and unwound. If not, it means the total number of parts that could not be unraveled) was zero.

[0012]

[Effect of the device]

 As described in detail above, according to the present invention, it is possible to obtain an extra-fine wire winding device that can be applied to both the aligned winding method and the cross winding method.

[Brief description of drawings]

FIG. 1 is a perspective view of an extra-fine wire winding device of the present invention.

FIG. 2 is a perspective view for explaining an aligned winding method.

FIG. 3 is a perspective view for explaining a cross winding method.

FIG. 4 is a perspective view for explaining dimensions of a take-up spool and a guide pulley set in an experimental example.

[Explanation of symbols]

 3 Moving base 5 Guide pulley 6 Take-up spool 7 Extra fine wire

Claims (2)

[Scope of utility model registration request] 1. An extra-fine wire winding device comprising: a take-up spool; a guide pulley for guiding the extra-fine wire to the take-up spool; and a moving means for moving the guide pulley with respect to the take-up spool. 2. The extra-fine wire winding device according to claim 1, wherein the moving means includes a moving base for rotatably supporting the guide pulley and a position adjusting knob for moving the moving base. Extra fine wire winding device.