JPH1058222A - Lead wire cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lead wire cutting device which presents good working efficiency and also good economy by changing the position in use through rotating of a cutter, and thereby dispensing with the attaching, detaching and sharpening of a blade plate. SOLUTION: A placing part 3 is provided for electronic components 2 having through holes for leads 2a to penetrate, and each electronic component is mounted with its leads penetrating the holes and the parts to be cut off emerging down at the bottom, and the lead wires are cut by a blade 4 mounted on a receptacle table 5 reciprocating parallel with the bottom of the placing part where rubbing with the bottom of the placing part is kept so that an intended lead cutting device is accomplished, wherein the blade is formed in a doughnut shape having a cutting edge 4a at the periphery in such a way as capable of being fixed to the receptacle table through mounting means 12 and 14 and also released from fixation and rotated. The cover-part of the blade in reciprocation is shielded by an upper plate of a case 6, and the upper plate is furnished with through holes to perform fixation and disengagement of the blade and also its rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a lead wire cutting device.
More specifically, the present invention relates to a lead wire cutting device that can convert a used portion by simply turning the blade without removing the blade when the used portion of the blade plate cannot be cut due to blade spilling or wear.

[0002]

2. Description of the Related Art Electronic components such as capacitors and power transistors need to have their lead wires cut to a predetermined length by a cutting device before soldering to a substrate. For this reason, the conventional lead wire cutting device used for cutting the lead wire is fixed to a receiver so that the rectangular blade plate cannot be moved and adjusted.

[0003]

However, in such a lead wire cutting device, the used portion cannot be changed even if the used portion of the blade plate is not cut due to blade spillage or wear. For this reason, each time the blade is cut, the blade plate must be removed and sharpened, and when the blade is returned from the sharpening, the blade must be attached. Therefore, there is a problem in that much time is wasted and expenses are increased.

The present invention solves the above-mentioned problems, and in particular, by rotating a blade plate to change its use part, it is not necessary to remove and sharpen a blade, thereby improving the working efficiency and improving the economical efficiency. It is an object to provide an apparatus.

[0005]

According to a first aspect of the present invention, there is provided a lead wire cutting device comprising: a mounting portion for an electronic component having a through hole for a lead wire;
The electronic component is placed so that the lead wire passes through the through-hole and the cutout portion comes out from the bottom, and reciprocates below the placement portion so as to be parallel to the bottom of the placement portion. In a lead wire cutting device that is provided with a blade attached to a cradle and kept in friction with the bottom of the mounting portion, the blade is moved under the mounting portion by reciprocating motion to cut a lead wire. The blade is formed in a donut shape having blades around the periphery, and is fixed to a receiving table by an attaching means, or attached so that the fixing can be released and rotated. I do.

According to a second aspect of the present invention, the upper part of the reciprocating blade is shielded by an upper plate of the case.
The upper plate is provided with a through hole for fixing and releasing the blade and rotating the blade.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In the drawing, reference numeral 1 denotes a lead wire cutting device according to the present invention. This lead wire cutting device 1 cuts a lead wire into a predetermined shape before soldering a capacitor, a power transistor and other electronic components to a substrate. Cut to length.

The lead wire cutting device 1 includes a mounting portion 3 on which an electronic component 2 is mounted and a lead wire 2a of the electronic component 2.
And a receiving table 5 to which the cutting tool 4 is attached and reciprocates are provided in the case 6 so as to maintain a predetermined relational position. Upper plate 6a
In the window hole 7 provided in the camera.

The mounting portion 3 of the electronic component 2 is formed in a circular shape, a square shape, or any other dish shape in plan view and has a flange 3 a around the mounting portion 3. The flange 3a is fixed to the receiving plate 8 by fitting into a hole 9 provided in the receiving plate 8 to be attached and screwing the flange 3a to the receiving plate 8. The electronic component 2 is provided on the bottom 3 b of the mounting portion 3.
The through hole 10 through which the lead wire 2a passes is formed with a plurality of circular holes such as the mounting portion 3 shown in the lower part of FIG. When the lead wire 3 of the electronic component 2 is inserted through these through holes 10, the portion of the electronic component 2 where the lead wire 2 a is cut off has a bottom 3 b.
The lower part of the bottom 3b of the mounting part 3 is finished to an accurate flat surface so as to rub against a blade described later, and the lead wire 2a of the blade 4 is Is surely performed without generating burrs or the like.

The mounting portion 3 is for cutting a portion of the electronic component lead wire 2a inserted through the through hole 10 and going down from the bottom 3b with the blade 4, and the length of trimming the lead wire 2a is equal to the mounting length. It is equal to the thickness of the bottom 3b of the part 3. Therefore,
When changing the trim length of the lead wire 2a, it is necessary to change the thickness of the bottom 3b. Therefore, some mounting portions 3 having different thicknesses of the bottom 3b may be prepared and exchanged. However, when the thickness of the bottom 3b of the mounting portion 3 is formed and set to the shortest alignment dimension of the lead wire 2a and it is desired to make the alignment length longer than this, as shown by a chain line in FIG. It is economical to change the trimming dimension of the lead wire 2a by stacking the contact plate 11 provided with the hole 10 on the bottom 3b, and depending on the type of the electronic component 2, it is economical.
Since the thickness, number, position, and the like of the mounting portion change, in this case, the mounting portion 3 in which the through hole 10 is adjusted to the above change is used.

The blade 4 for cutting the lead wire 2a is formed in a donut shape having a blade 4a all around, and has an inner hole 4b having a step 4c as shown in FIG. Then, the stepped circular seat 12 is inserted into the inner hole 4b having the step 4c of the blade 4 from above.
Are engaged on the pedestal 5, and the core hole 12a provided in the stepped circular seat 12 is fitted to the core shaft 13 provided in the center of the receiving pedestal 5, and the stepped circular seat 12 is screwed. When the blade 4 is fastened to the cradle 5 by 14, the blade 4 is fixed to the cradle 5 and the blade 4
The part corresponding to the lead wire 2a among the parts a is used. However, when the used portion is not cut due to spilling or abrasion due to cutting of the lead wire 2a, when the screw 14 is loosened, the blade 4 is unlocked and can be rotated.

It is preferable that the operation of fixing or releasing the cutting tool 4 to the receiving table 5 be performed from the outside of the case 6.
A fastening screw 14 for the stepped circular seat 12 is attached to the upper plate 6a of the case 5.
And the blade 4a of the blade 4
The through hole 1 that turns the blade 4 corresponding to the part slightly inside
6 is provided, a tool is inserted through the through hole 15, the screw 14 is loosened, a finger or a tool is inserted through another through hole 16, the blade 4 is turned, and the tool is inserted into the through hole 15 when the used portion of the blade 4a is changed. If the operation of inserting the screw and tightening the screw 14 is performed, the motor
No more injuries.

The receiving table 5 is a linear guide, an LM guide, and other commercially available bearings (not shown).
Is used, and the pedestal 5 is attached to the case 6
When the blade 14 is engaged with the rail 18 attached by the mounting member 17, the blade 14 keeps rubbing against the lower surface of the bottom 3 a of the mounting portion 3, and is reciprocated by reciprocating means described later.
An operation of cutting the cut portion of the lead wire 2a projecting below the bottom 3b from the through hole 10 and returning to the original position after cutting is lightly and reliably performed.

The reciprocating means of the blade 4 has a crank pin 21 erected at a position separated by a predetermined distance from the center of a disk 20 (clink may be used) rotated by a motor 19, and a roller 21a is mounted on the crank pin 21. When the crank pin 21 is rotated by a motor 19, the roller 21a is engaged with a long receiving groove 22 provided on the lower side of the receiving base 5 so as to be orthogonal to the rail 18. The receiving table 5 is advanced from the original position to the lower side of the placing section 3 and returns to the original position from here.

The motor 19 is mounted on the mounting portion 3 by the electronic component 2.
Is started and the blade 4 is moved after the electronic component 2 is mounted.
It is preferable to operate the cutter 2 so that it stops when the cut portion of the lead wire 2a is cut and the blade 4 returns to its original position. Therefore,
A power switch Sa is provided on the front side of the case 5, a start switch Sb is provided near the mounting portion 3 of the electronic component 2, a stop switch Sc is provided at the original position of the receiving table, and the power switch Sa is turned on at the start of work. After the motor 19 is connected to the power supply and the electronic component 2 is mounted on the mounting portion 3, the start switch Sb is turned on to start the motor 19. When the cutting of the lead wire 2a is completed and the wire returns to the original position, the stop switch Sc is operated to stop the motor 19.

According to the lead wire cutting device having the above configuration, when the lead wire 2a of the electronic component 2 is inserted into the through hole 10 provided in the bottom 3b of the mounting portion 3, the electronic component 2 cuts and aligns the lead wire 2a. The length to be cut is settled in the through hole 10, and the portion to be cut is stabilized on the mounting portion 3 in a state where it goes down from the bottom 3b.
Therefore, when the motor 19 is started, the disk 20 rotates to rotate the crank pin 21 that engages with the long receiving groove 22 provided on the lower side of the receiving base 5. For this reason, the cradle 5 is the electronic component 2
And moves the cutting tool 4 to the bottom 3 b of the mounting portion 3.
While rubbing against each other, advance across the lead wire 2a,
The cut portion of the lead wire 2a is cut to align the lead wire 2a to a required length. Then, the cradle 5 retreats and returns the blade 4 to the original position. With this, the motor 19 is stopped to cope with the cutting of the next lead wire 2.

If the cutting of the lead wire 2 is continued at the same used portion of the blade 4, the blade 4a at the used portion will not be cut due to spilling or abrasion. In this case, the blade 5 is placed at the original position. When the tool is inserted through the through hole 15 and the screw 14 is loosened, the blade 4 is released from being fixed to the pedestal 5 and becomes rotatable. Then, if a finger or a tool is inserted through another through hole 16 and the blade 4 is turned and the screw 14 is tightened when the used portion of the new blade 4a corresponds to the lead wire 2a, the blade 4 is fixed to the pedestal 5 and the new blade 4 is fixed. Lead wire 2a depending on the part used
Will be cut off. However, since this portion is eventually cut off due to blade spilling or wear, if the blade 4 is turned to convert the used portion of the blade 4a in the same manner as described above, the blade 4a on the entire circumference of the blade 4 will be used up. The blade 4 can be continuously used until the blade is sharpened.

[0019]

As described above, according to the first aspect of the present invention, a doughnut-shaped blade having a blade on the entire circumference is used. By turning a little by little to change the use site, it is not necessary to remove and sharpen the blade until all the blades on the entire circumference are used up. This has a remarkable effect on improving work efficiency and reducing blade sharpening costs.

According to the second aspect of the present invention, since the fixing and release of the blade to the receiving table and the rotation of the blade can be performed from outside the case, the device may be started by mistake during this operation. In addition, the blade is not injured by the blade, which is effective for work safety.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a lead wire cutting device according to the present invention as viewed from the front side.

FIG. 2 is a perspective view of the same device as seen from the side, with an upper plate of a case removed.

FIG. 3 is a central longitudinal sectional side view showing a mounting portion of an electronic component, a cutting tool, and a reciprocating means thereof in the same device.

FIG. 4 is a plan view showing a reciprocating means of the blade of the same device.

[Description of Signs] 2 Electronic components 2a Lead wire 3 Placement section 4 Blade 4a Blade 5 Receiving pedestal 21, 22 Blade reciprocating means 12, 14 Blade attaching means 15, 16 Through hole

Claims (2)

[Claims] An electronic component is mounted on a mounting portion of an electronic component having a through hole for a lead wire such that the lead wire passes through the through hole and a cutout portion is lowered from the bottom. On the lower side of the section, there is provided a blade attached to a cradle that reciprocates parallel to the bottom of the mounting section and kept in contact with the bottom of the mounting section, and reciprocates the blade. In the lead wire cutting device for moving the lower portion of the mounting portion to cut the lead wire, the blade is formed in a donut shape having a blade around,
A lead wire cutting device, wherein the lead wire cutting device is fixed to a receiving stand by an attaching means or attached so as to be able to be unlocked and rotated. 2. A reciprocating blade is shielded by an upper plate of a case, and a through hole for fixing and releasing the blade and rotating the blade is provided on the upper plate. 1
The lead wire cutting device according to the above.