JPS641959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lead wire forming and cutting tool for radial lead type electrical parts such as capacitors and coils.

Normally, when installing electrical components onto a printed board, lead wires are molded to match the hole pitches for the printed board lead wires. In this case, the lead wire of the radial lead type electrical component 3.0 can be shaped as shown in Figure 1 by hand or by a tool or machine with a mechanism that replaces the shaping and cutting unit every time the shaping dimensions change. ing. In this case, it is difficult to cut the mold to a certain size manually, and the above tools or machines require setup work by replacing the unit, making it necessary to prepare a unit for each molding size, and the lead wire diameter Even then, fine adjustments were necessary.

The purpose of the present invention is to improve the above-mentioned drawbacks,
To provide a lead wire forming and cutting tool which has a structure that allows easy setting of forming dimensions, reduces setup time, and eliminates variations in forming dimensions.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

2 and 3 are a side sectional view and a perspective view of an embodiment of the present invention. Note that reference numbers with a dash indicate the same object as the symmetrical part.

The neck d (FIG. 1) of a lead wire of a workpiece 30 such as a capacitor is held by a chuck fixing plate 1 and chucking blocks 2, 2'. This tracking block 2, 2'
are connected to the slide blocks 3, 3' by pins 4, 4', and when the parts are chucked, changes in the lead wire diameter of the parts are absorbed through springs 24, 24'. Blocks 5 and 5' have component dimensions a,
b (Fig. 1) is a stop block for adjustment,
The position can be arbitrarily changed by rotating the knobs 8, 8' in conjunction with the cylindrical cams 7, 7' via the rods 6, 6'.

Further, the forming heads 9, 9' incorporate blades 10, 10' for cutting lead wires. These molding heads 9, 9' are connected to slide blocks 11, 11'.
In addition, the blades 10, 10' are attached to the slide blocks 12, 1
2', and these two slide blocks 11,
11', 12, 12' are connected by springs 21, 21'. Incidentally, the molding heads 9, 9' absorb the amount of change due to the diameter of the lead wire by the joint formed by the pins 18, 18' and the spring 20.

14, 14' are cams for pushing out the chucking slide blocks 2, 2', 3, 3';
13, 13' are forming and cutting blocks 11, 1
This is a hook for towing 1', 12, and 12'.
By engaging the pins 16, 16' of the shafts 15, 15' with the grooves of the hooks 13, 13',
Forming and cutting blocks 11, 11', 12, 1
2' is activated. 17, 17' is shaft 15,
This is a power transmission pulley for rotating the motor 15'. 19, 19' are bearings for the shafts 17, 17', and springs 22, 22' support the chucking blocks 2, 2', 3, 3';
are molding and cutting blocks 11, 11', 12, 1
2' respectively.

Next, an example of this operation will be explained.

In the side view of FIG. 4, knob 8' is rotated to adjust dimensions a and b (FIG. 1) of part 30. A cylindrical cam 7' integrated with this knob 8' moves the abutment block 5' via a rod 6' to select dimensions a and b. As is clear from FIG. 2, this mechanism is independent of the left and right sides, and the molding dimensions can be adjusted independently for the left and right sides. At this point, the component 30 is inserted. Since the dimension c (Fig. 1) of the parts changes depending on the type of parts, the shape of the chucking part of the chucking plate 1 and the same block 2' has a tapered part as shown in Fig. 7a and b, and the dimensions It is inserted in the appropriate position according to c.

Next, the chucking operation of the lead wire neck is performed by rotating the shaft 15'.
As shown in FIG. 5, the cam 14' fixed to the shaft 15' pushes the slide block 3', thereby moving the chucking plate 1 and the block 2'.
It is carried out by. At this time, the amount of change in the lead wire diameter is absorbed by the charging block 2'.
That is, as shown in FIG. 8, since the block 2' connected to the pin 4' and the spring 24' moves back and forth freely, changes in the wire diameter are mechanically absorbed independently of the slide block 3'. At the same time, the chucking force becomes constant. This chucking operation is completed by the time the shaft 15' rotates 1/2, and is maintained until the forming cutting described below is completed.

FIG. 9 is a plan view of the cam 14 (or 14'), in which a chuck operation is performed in sections e to f, and a chuck operation is performed in sections f to g.
The chuck is held in the section gh, and the chuck block 2' and the slide block 3' are quickly returned in the section gh.

Once the chucking is completed, the molding operation begins. When the shaft 15' rotates 1/2, the pin 16' engages in the groove of the hook 13' which is rotatably pin-coupled to the block 12', as shown in FIG. As the shaft 15' rotates, the slide block 12' is pulled, and the forming block 11', which is connected to the slide block 12' by a spring 21', moves in conjunction with the slide block 12'. During this time, the forming head 9' and the blade 10' move in the same way, and the lead wire
As shown in the figure, the lead wire is molded while absorbing the change in lead wire diameter using the molding head 9'. This state is the first
As shown in Figure 0. That is, the forming head 9', which is movable up and down by the pin 18', is pushed upward by the spring 20 and moves up and down in accordance with the diameter of the lead wire. Further, the spring 20 applies appropriate molding pressure to the molding head 9' and also acts as a buffer to prevent damage to the lead wire.

As the molding progresses further, as shown in FIG. 6, the molding head 9' reaches the abutment block 5', and the spring 2
The motion of the forming block 11' being pulled by the molding block 1' is stopped, and the head 9' holds the lead wire between the abutment blocks 5'. Furthermore, shaft 1
When the blade 5' rotates, the blade 1 fixed to the block 12'
0' is pulled, and the lead wire is cut using the lower front side of the abutment block 5' as one cutting edge.

After the above operation is completed, the shaft 15' is approximately 1
In the rotated stage, the cam 14' is in the ninth position.
The section g to h in the figure is reached, and the hook 13'
reaches the section j to k in Fig. 11, and the hook 1
3' is released from pin 16' by shaft 15'. In addition, in Fig. 11, sections j to l are idle,
engaging the pin 16' with the hook 13' at point l;
Sections l to k are the traction areas of the blocks 12' and 11', and sections k to j are the opening areas of the hook 13'.
When the cam 14' reaches the return section and the hook 16' is also released, the chuck block 2' and the slide block 3' are moved by the spring 22', and the cutting block 12' and the forming block 11' are moved by the spring 23'. Each is returned to the state shown in FIG. 4, and one process is completed.

As described above, the tool of the present invention has a function of mechanically absorbing the amount of change in the lead wire diameter, making it easy to change the molding dimensions, and making it possible to mold the molding dimensions to be constant.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a lead wire molded part used in the present invention, Fig. 2 is a front view including a partial cross section of an embodiment of the present invention, Fig. 3 is a perspective view of the main part of Fig. 2,
Fig. 4 is a front view of the lead wire molding dimension adjustment shown in Fig. 2, Fig. 5 is a front view of the parts shown in Fig. 2 in the chuck state, and Fig. 6 is a front view of the part shown in Fig. 2 after the forming operation is completed. Figures 7a and 7b are a perspective view of the parts inserted in Figure 2 and a plan view of the chucking block, Figure 8 is a front view showing the chucked operation of Figure 2, and Figure 9 is a 10 is a front view of the forming head during molding shown in FIG. 2, and FIG. 11 is a front view of the forming and cutting block actuating hook, traction shaft, and pin shown in FIG. 2. It is. In the figure, 1...fixing plate for chucking, 2, 2'
...Chaking block, 3, 3'...Slide block for tracking, 4, 4'...Connecting pin, 5, 5'...Block block for adjusting molding dimensions, 6, 6'...Rod, 7 ,7'...Cylindrical cam,
8, 8'... Knob, 9, 9'... Molding head, 1
0,10'...Cutting blade, 11,11'...Slide block for molding, 12,12'...Slide block for cutting, 13,13'...Hook, 14,
14'...Chaking operation cam, 15,1
5'...Shaft, 16,16'...Tow pin,
17, 17'... Pulley, 18, 18'... Pin, 19, 19'... Bearing, 20... Spring for forming head, 21, 21'... Connection spring, 22, 22', 23... Pull back 24, 24'... springs for the chuck block.

Claims (1)

[Scope of Claims] 1. Lead wire forming and cutting for an electrical component, comprising a holding means for holding an electrical component, a forming means for forming a lead wire of the electrical component, and a cutting means for cutting the formed lead wire. In the tool, the holding means includes a fixing plate 1 having a tapered part on which the electrical component having an arbitrary lead wire spacing can be placed, and a tapered part at one end facing and parallel to the tapered part. chucking blocks 2, 2' that are slidable to hold the lead wire; and a chuck block 2, 2' that is slidable to hold the lead wire; 1 blocks 3 and 3', and the shaping means has a distal end formed perpendicularly to the fixing plate and is located below the lower surface of the fixing plate, and slides along the tracking block. possible forming heads 9, 9'; and second blocks 5, 5 whose position is adjustable according to the forming dimensions of the lead wire and which form the lead wire together with the tip of the forming head. a lead wire cutting blade 10, wherein the cutting means is located below at least the second block and the chucking block, and the cutting edge is located between the tip and the second block; 10', and a third block 12, 12' that is connected to the other end of the lead wire cutting blade and is slidable in parallel with the fixed plate, and the lead wire is connected to the molding head and the second block. Place the electrical component on the fixing plate so that it is inserted between the blocks, slide the first block and the tracking block toward the fixing plate, and connect the lead wires at the two tapered parts. After holding, the position of the second block is adjusted and fixed, and the molding head is slid in the direction toward the second block to spread the lead wire and mold it, and then the third block and the lead wire are molded. A lead wire forming/cutting tool for electrical parts, which cuts the tip of a formed lead wire by sliding a wire cutting blade.