JPH0724901B2 - Lead cutting device - Google Patents

Description

The present invention relates to a lead cutting device that cuts a lead protruding from a component into a predetermined length.

[Prior Art] Conventionally, when cutting one or more leads protruding from an electric component such as a transformer into a certain length, a lead cutting device 70 shown in FIG. 11 has been used.

The lead cutting device 70 shown in the figure includes a component mounting board 71 formed by penetrating a plurality of lead insertion holes 72 at regular intervals (for example, 2.5 mm intervals) in the X and Y directions. (Parts) When cutting the four leads 74 that protrude in the same direction from the 73, insert each lead 74 into the corresponding lead insertion hole 72 at the same time, and use a single straight blade.
By moving 75 forward, the leads 74 protruding from the lead insertion holes 72 are cut.

[Problems to be Solved by the Invention]

However, in such a conventional lead cutting device 70, since it is necessary to insert the lead 74 into the lead insertion hole 72 having a relatively small diameter, it is difficult to perform the work, and even if the lead 74 is slightly bent, it can be inserted. Difficult, and eventually lead 74
There was a problem that work could not be done efficiently, such as having to straighten and insert it. In addition, each lead 74
In the case of a product in which the interval of ... Deviates from the regulation or standard, it is necessary to replace the component placement board 71 with another component placement board each time, and there is a problem that versatility and flexibility are lacking.

On the other hand, since the straight blade 75 is used as the lead cutting blade,
Since two or more leads 74 ... Are cut at the same time, it is necessary to design a large-capacity drive unit capable of cutting two or more leads 74 ... Simultaneously, leading to an increase in size and cost of the product. There was a problem.

It is an object of the present invention to provide a lead cutting device that solves the problems existing in the conventional techniques.

[Means for Solving the Problems]

According to the present invention, when configuring the lead cutting device 1 that cuts the plurality of leads L ... Projecting from the component D into a predetermined length, the leads L ... Can be simultaneously inserted and at least one end 2x (2y) is opened. A plurality of slits 2a, 2b, 2c, 2d, 2e ... Arranged at predetermined intervals and a plurality of recessed grooves 6 ... Receiving the leads L ... provided at a predetermined position on one wall surface facing each slit 2a. The component mounting board 3 which has, the stopper 7 which regulates the position of the leads L ... with respect to the insertion direction when the leads L ... Are inserted into the slits 2a.
And a drive unit 5 for moving the lead cutting blade 4 in the vertical direction with respect to the slits 2a. And

In this case, the ends of the slits 2a ...
2x (2y) gradually widens the tip, and the groove 6
R is attached to the edges 6a and 6b with a predetermined curvature. Further, the position of the stopper 7 is changeable, and the stopper 7
Is provided with a sensor mechanism 8 for detecting the presence of the leads L ... Furthermore, the lead cutting blade 4 is formed in a step shape at different positions with respect to the cutting direction, so that a plurality of blade portions 4a, 4 capable of cutting the plurality of leads L ...
It consists of b, 4c.

[Action]

 Next, the operation of the present invention will be described.

According to the lead cutting device 1 of the present invention, the leads L ... Projecting from the component D can be inserted from the open one end 2x of the corresponding predetermined slits 2a. At this time, since the one end 2x is formed in a wide V shape, the bent lead L can be easily inserted as it is. The positions of the inserted leads L ... Are regulated by the stopper 7 and at the same time, the positions of the recessed grooves 6 ... On the other hand, since the presence of the position-regulated leads L ... Is detected by the sensor mechanism 8, the lead cutting blade 4 can be moved forward and the leads L ... Can be cut by operating the drive unit 5 based on this.

Further, since the lead cutting blade 4 is provided with two or more blade portions 4a ... Which are arranged stepwise at different positions with respect to the cutting direction, each lead L ... Is cut one by one.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

First, the overall schematic configuration of the lead cutting device 1 according to the present invention will be described with reference to FIGS. 1 to 3.

The lead cutting device 1 includes a chassis 11 and the chassis 11
The component mounting board 3 is fixed to one end of the. A stopper 7 is attached to the upper surface of the component mounting board 3, and a lead cutting blade 4 is arranged on the lower surface. The lead cutting blade 4 is moved forward and backward by a drive unit 5. The drive unit 5 has a pulse motor unit 12 arranged at the other end of the chassis 11,
The output shaft 12a of is connected to the feed bolt 14 via the coupler 13. The feed bolt 14 is supported by a pair of front and rear bearings 15 and 16 provided on the chassis 11. Also, the feed bolt 14
A feed nut 17 is screw-engaged with this, and the feed nut 17 allows the slider 18 connected to the lead cutting blade 4 to move forward and backward. The slider 18 is slidably supported by a guide rail 19 provided on the chassis 11.

Next, the configuration of the main part will be described more specifically.

First, the component mounting board 3 will be described with reference to FIGS. 4 to 7.

The component mounting board 3 is formed of a rectangular plate material having a predetermined thickness,
As shown in FIG. 6, the upper surface 3a is formed as a flat surface. Also,
The lower surface 3b has a linear ridge portion 21 formed with a predetermined thickness.
The a, 21b, 21c, and 21d are provided at a predetermined interval from one end side to the opposite other end side, and are fixed to the chassis 11 using the mounting holes provided in the projecting line portions 21a and 21d on both outer sides. The thickness of the intermediate portion of the component mounting board 3 determines the length of the lead L to be cut. On the other hand, a plurality of parallel slits 2a are formed on the component mounting board 3 at regular intervals, and these slits 2a are formed.
Are perpendicular to the ridges 21a. Further, the slits 2a are formed so as to penetrate the upper surface 3a and the lower surface 3b, except for the ridges 21a. Therefore, the slits 2a ...
The formation site of is strengthened. The widths of the slits 2a ... And the distance between them is set based on the diameter of the leads L. Moreover, both ends 2x, 2y of each slit 2a ... Are opened, and each end 2x, 2y is gradually widened so that the tip becomes V-shaped, and the edge connected to the upper surface 3a of each slit 2a. The width is gradually increased so as to form a V shape. Further, on the wall surface facing each slit 2a, which is the wall surface opposite to the position where the lead cutting blade 4 is present, a concave groove portion 6 having a semicircular cross section, into which the leads L are fitted, is formed. A plurality of them are formed at predetermined intervals in the longitudinal direction. It should be noted that this interval is set in consideration of the mutual interval of the leads L ... Each recessed groove portion 6 has a function of positioning and holding the leads L, and having a function of preventing burrs from occurring on the leads L when cutting.
As shown in FIG. 7, the edges 6a and 6b of the recessed groove portion 6 are provided with R with a predetermined curvature so that even if the lead L is slightly bent, it is received in the recessed groove portion 6 and has a function of linearly correcting it.

On the other hand, a stopper 7 provided with a sensor mechanism 8 is arranged on the upper surface of the component mounting board 3.

As shown in FIG. 1, the stopper 7 can be detachably mounted on the component mounting plate 3 with a fixing screw 31, and its mounting position can be changed. By changing the mounting position, it is possible to deal with various parts having different lead positions.
The stopper 7 is arranged at a position that intersects the slits 2a at a right angle, and the leads L inserted into the slits 2a and slid.
And the position is regulated (see FIG. 4). Further, as shown in FIG. 9, the stopper 7 is provided with a sensor mechanism 8 for detecting the presence of the leads L ... The position of which is regulated by the stopper 7. The sensor mechanism 8 is provided with a detection member 32 arranged inside the stopper 7. The detection member 32 is provided slidably in the longitudinal direction of the slits 2a ... And a plurality of detections whose tip projects slightly from the stopper 7 into the slit 2a. Piece 32a ...
And has a comb shape. In the detection member 32, the spring 33 (see FIG. 3) allows the detection pieces 32a ...
It is urged in the direction of protruding. Further, the detection member 32 is integrally formed with a shutter piece 34 as shown in FIG. 10, and on the other hand, on the chassis 11 side, for example, a photo sensor 35 whose optical path is opened and closed by the shutter piece 34 is arranged. Therefore, when the detection pieces 32a ... Are pushed by the leads L ... of the component D, and the detection member 32 is pushed into the stopper 7, the leads L ... Become the regulation position, and this position can be detected by the photosensor 35.

Next, the lead cutting blade 4 arranged below the component mounting board 3 will be described with reference to FIGS. 5 and 8.

The lead cutting blade 4 has a mounting hole for coupling with the slider 18 at the rear portion thereof, and groove portions 41 for slidably engaging with the ridge portions 21b and 21c on both sides thereof for positioning and reinforcement. 42 (see FIG. 3) is provided. Further, a plurality of blade portions 4a, 4b, 4c, 4d, 4e in the lateral direction, each blade portion 4a
Are formed at different positions with respect to the cutting direction, and the relative positions of the blade portions 4a are selected so that the leads L ... Which are arranged in the lateral direction can be sequentially cut one by one (see FIG. 8).

Next, the usage method and function of the lead cutting device 1 will be described.

First, a transformer T is illustrated in FIG. 5 as a component D having leads L to be cut.

At the time of cutting, first, as shown in FIG. 4, the leads L of the transformer T are inserted from one end 2x of the slits 2a ... And the transformer T is slid while being mounted on the component mounting table 3. In this case, the transformer T may be held by hand or may be automatically moved by an automatic machine or the like. Then, if the leads L are moved until they hit the stopper 7, the positions of the leads L are regulated, and at the same time, the leads L are positioned at positions corresponding to the concave groove portions 6. At the same time as the position regulation, the detection piece 32
Since a ... Is pushed into the stopper 7, the shutter piece 34 is moved by the movement of the detection member 32.
34 is detected by the photo sensor 35. As a result, the pulse motor unit 12 is activated and the lead cutting blade 4 is advanced by a predetermined distance to cut the lead L. At this time, the leads L ... Are sequentially cut one by one according to the shape of the lead cutting blade 4, and when all the cutting is completed, the lead cutting blade 4 retracts and returns to the original position.

Since the lead cutting device 1 according to the present invention includes the slits 2a, it is possible to cut even arbitrary components in which the intervals between the leads L in the longitudinal direction of the slits 2a are out of the standard.

Although the embodiments have been described in detail above, the present invention is not limited to such embodiments. For example, the slit may be open at only one end. Although the transformer is exemplified as the component, it can be applied to various components such as a coil, a capacitor, a resistor, an integrated circuit, and other similar articles. Further, the operation control of the drive unit may be manually performed by a manually provided push button or the like. In addition, the detailed configuration, shape, quantity, etc. can be arbitrarily changed without departing from the scope of the present invention.

〔The invention's effect〕

As described above, in the lead cutting device according to the present invention, the leads L ... Can be inserted simultaneously, at least one end is open, and a plurality of slits arranged at predetermined intervals and one wall surface facing each slit are provided. In the lower part of the component mounting board, a component mounting board having a plurality of recessed grooves for receiving the lead provided in a predetermined position in the above, a stopper for restricting the position of the lead in the insertion direction when the lead is inserted into the slit, and below the component mounting board. The lead cutting blade disposed on the side facing the concave groove portion and the drive unit 5 for moving the lead cutting blade forward and backward in the vertical direction with respect to the slit have the following effects.

Since a plurality of slits are used, it is possible to simultaneously cut the leads arranged two-dimensionally in the front, rear, left and right directions, and it is possible to dramatically improve the productivity.

Since a slit perpendicular to the cutting direction is used, it is easy to cut even if the lead interval in the longitudinal direction of the slit is arbitrary, it is excellent in versatility and flexibility, and lead (component) setting and automation are easy. Become.

By configuring the lead cutting blade with a plurality of blades formed at different positions with respect to the cutting direction, it is possible to sequentially cut a plurality of leads one by one, downsizing the drive unit and the entire device and reducing the cost. Can be realized.

Positioning and cutting can be performed reliably and stably by the groove and stopper, and it is possible to prevent burrs from occurring in the lead at the time of cutting, and the bend of the lead can be straightened by the R of the predetermined curvature provided in the groove and the edge. Can be corrected to the shape.

[Brief description of drawings]

1 is a plan view of a lead cutting device according to the present invention, FIG. 2 is a side view of the lead cutting device, FIG. 3 is a front view of the lead cutting device, and FIG. 4 is a component mounting in the lead cutting device. Plan view of the mounting board, FIG. 5: Partial sectional side view of the parts mounting board, FIG. 6: Front view of the parts mounting board, FIG. 7: Plan view of the concave groove portion of the parts mounting board Fig. 8: Plan view of the lead cutting blade of the lead cutting device according to the present invention, Fig. 9: Partial plan view of the stopper in the lead cutting device according to the present invention, Fig. 10: Sensor mechanism in the lead cutting device FIG. 11 is a partial front view of FIG. 11: a configuration diagram of main parts of a lead cutting device according to a conventional technique. In the drawings, 1: lead cutting device, 2a ...: slits 2x, 2y: end part, 3: component mounting board 4: lead cutting blade, 5: drive part 6 ...: concave groove part, 7: stopper 8: sensor mechanism , D: Parts L ...: Lead

Claims (6)

[Claims] 1. A lead cutting device for cutting a plurality of leads protruding from a component to a predetermined length, wherein a plurality of leads can be inserted at the same time, at least one end of which is open, and arranged at predetermined intervals. A component mounting board having a plurality of recessed groove portions for receiving the slit and a lead provided at a predetermined position on one wall surface facing the slit, a stopper for regulating the position of the lead when the lead is inserted into the slit, and the component mounting board. A lead cutting blade disposed on the side below the concave groove portion and facing the concave groove portion, and a drive unit for moving the lead cutting blade forward and backward in a direction perpendicular to the slit. . 2. The lead cutting device according to claim 1, wherein an R of a predetermined curvature is attached to an edge portion of the concave groove portion. 3. The lead cutting device according to claim 1, wherein the ends of the slits are formed so that their tips gradually become wider. 4. The lead cutting device according to claim 1, wherein the stopper is configured to be positionally changeable. 5. The lead cutting device according to claim 1, wherein the stopper is provided with a sensor mechanism for detecting the presence of the position-regulated lead. 6. The lead cutting blade is formed of a plurality of blade portions capable of cutting a plurality of leads one by one by forming the lead cutting blade in a step shape at different positions with respect to the cutting direction. Lead cutting device.