JP2775937B2 - Wire cutting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire cutting device in an electronic component insertion device that cuts a wire into a predetermined length and inserts the wire into a predetermined location.

2. Description of the Related Art A conventional configuration will be described below with reference to FIG.

As shown in the figure, a wire 2 supplied by a predetermined length on a reel 1 is cut by a fixed blade 3 and a movable blade 4 moving in an insertion direction, and then formed into a predetermined shape. It is inserted in a predetermined place.

Problems to be Solved by the Invention In such a conventional wire rod cutting apparatus, since the wire rod is cut in a direction perpendicular to the axis of the wire rod, the cut surface of the wire rod is flat at both ends. Therefore, in order to ensure the insertion reliability, the insertion hole needs a clearance of 0.4 with respect to the wire diameter. However, in order to further improve the insertion reliability,
V-cutting of the wire is desirable, and it is more effective for small-diameter holes with a clearance of 0.3 or less.

Although the V-cut of a wire rod has a track record in a radial component insertion device, as shown in FIG. 9, since the taping 5 is applied to the radial component 6, the cut surface 7 on the radial component side is Although it is V-cut, the cut surface 8 on the taping side does not become V-cut. Therefore, it is necessary to equip two cutting parts 2 for the V-cut of the continuously supplied wire, which increases the cost.

The present invention has been made to solve the above-described problems, and has as its object to provide a wire cutting device.

Means for Solving the Problems In order to achieve the above object, the present invention provides a jumper wire insertion device which cuts a wire continuously supplied in one direction to a predetermined length, shapes it into a predetermined shape, and inserts it into a substrate. A holding portion capable of holding the wire continuously supplied in one direction, having a bottom diameter larger than the diameter of the wire held by the holding portion, and sharing a vertex and a center line. A pair of cut portions each including two semi-conical shaped portions formed as described above and a cutting portion having a semi-conical ridge line of the formed portion as a cutting edge are slid from each other in a direction substantially perpendicular to the axis of the wire. It is arranged to do.

Operation In the present invention, the cutting section moves in the direction in which the wire is cut by the above-described configuration, and the cutting edges facing each other across the wire come into close contact with each other and cut the wire. Each cutting edge is at an acute angle with respect to the axis of the wire, and exists at a point-symmetrical position with respect to an arbitrary point on the line. Continuous V-cut of the wire can be performed.

Embodiment An embodiment of a jumper wire insertion device according to the present invention will be described below with reference to FIGS.

1 and 2 show the configuration of a wire rod cutting device, in which a cutting unit 10 for cutting a wire 9 and a holding unit 11 for holding the wire 9 are shown.
Consisting of As shown in the figure, the cutting portion 10 has a bottom diameter larger than the diameter of the wire 9 to be cut, and
However, a molded part having two concave semi-conical shapes 15 parallel to the axis 13 of the wire 9 and sharing the apex 14 is symmetrical with the axis 13 of the wire 9 by a distance larger than the diameter of the wire 9. The X-shaped portions 16 formed by the ridges of the semi-cones are cutting edges. The holding portion 11 has a diameter slightly smaller than the diameter of the wire 9, and the forming portion having a shared central line 12 having a semi-cylindrical groove parallel to the axis 13 of the wire 9 is connected to the axis 13 of the wire 9. Symmetrically, there are two pairs of wire rods 9 facing each other at a certain distance larger than the diameter of the wire rod 9 with the cut portion 10 therebetween in the axial direction.

6 and 7 show the configuration of the jumper wire insertion device. The jumper wire insertion device is a slider that guides the wire 17 when the cut portion 10 and the holding portion 11 and the cut wire 17 are formed into a predetermined shape and inserts the wire into the substrate 18, and can be moved up and down in the insertion direction. 19, When the wire is formed by the slider 19, the wire 17 is supported in the insertion direction and can be opened and closed.
In order to insert the molded wire 17 into the substrate 18, the pusher 21 moves the wire 17 in the insertion direction.

In the above configuration, the operation will be described. As shown in FIG. 6, when a wire 9 having a predetermined length is sent by a reel 21 as shown in FIG. , Wire rod 9
To hold the wire 9 in the groove. Next, as shown in FIG. 4, the cutting section 10 moves in the direction of cutting the wire 9, and the facing cutting edges come into close contact with each other to cut the wire 9. As shown in FIG. 5, the cutting section 10 and the holding section
11 returns to the open state, and the wire is separated into the wire 17 cut to a predetermined length and the wire 9 on the reel side, and both cut surfaces are V-cut. Next, as shown in FIG. 7, the slider 19 and the pusher 21 are lowered in the insertion direction, and the wire 17 is formed into a predetermined shape by the slider 19 and the lever 20. Thereafter, the lever 20 is in a state where the opening wire 17 is free in the insertion direction, the slider 19 and the pusher 21 further descend, and the slider 19 stops descending in the vicinity where the slider 19 contacts the substrate 18, Only the pusher 21 continues to descend, and the wire 17 is inserted into a predetermined place by the pusher 21 while being guided by the slider 19.

As is clear from the above embodiments, according to the present invention, when successively supplied wires are sequentially cut to a predetermined length, both cut surfaces are V-cut at one cut portion. Therefore, the insertion reliability can be increased both for an insertion hole having a general diameter and for a small diameter hole.

Further, the V-cut does not cause a disadvantage that an unusable wire is generated.

[Brief description of the drawings]

FIG. 1 is a front view of a wire cutting device of a jumper wire insertion device according to one embodiment of the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIGS. 3, 4, and 5 are cutting processes. FIG. 6 is a front view of the jumper wire insertion device before cutting, FIG. 7 is a front view of the jumper wire insertion device after cutting, and FIG. 8 is a conventional wire cutting device. Front view, ninth
The figure is a front view showing a V-cut of a wire rod when inserting a radial component. 9 ... wire rod, 10 ... cutting part, 11 ... holding part.

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Claims (1)

(57) [Claims] 1. A wire cutting device in a jumper wire insertion device for cutting a wire continuously supplied in one direction into a predetermined length, shaping the wire into a predetermined shape, and inserting the same into a substrate. A holding portion capable of holding a wire to be formed, two semi-conical shaped portions having a bottom diameter larger than the diameter of the wire held by the holding portion and sharing a vertex and a center line, and the forming portion And a cutting portion comprising a cutting portion having a semi-conical ridge line as a cutting edge, and a pair of cutting portions arranged so as to slide from each other in a direction substantially perpendicular to the axis of the wire.