JPH0679689A - Printed circuit board dividing machine - Google Patents

Abstract

PURPOSE:To provide a printed circuit board dividing machine which does not use any press die solely devoted, can cut even along a curved line, is versatile, and presents possibility of automating of the operation. CONSTITUTION:A printed circuit board dividing machine is composed of an upper cutter 1 which is rotatably equipped at the tip with a small dia. disc-form cutting edge 1, is movable vertically, and with which a specified pressure can be impressed, a lower cutter 2 which is equipped at the tip with a disc-form cutting edge 32 in similar arrangement in such a manner as confronting the upper cutter 1, and an X-Y table 5 where a printed circuit board 4 is secured and which moves a cutting line 44 while in contact with the tip of the lower cutter 2 in accordance with a control program, wherein the upper cutter 1 sinks, contacts the cutting line 44 of the board 4, and cuts it while a specified pressure is impressed. Further it is so constituted that the upper and lower cutters 1, 2 make axial rotation along the cutting line 44 of the board 4, or so configured that a lower cutter 22 is equipped at the tip with a small spherical surface or a small rotatable sphere in lien of disc-form cutting edge 32 and that an ultrasonic vibratory energizing means 8 is furnished to apply a micro- vibration in vertical direction to either of the upper cutter 1 or lower cutter 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board dividing machine for dividing a printed circuit board into which a plurality of printed circuit boards are allocated.

In the production of a printed wiring board made of a glass epoxy base material or a flexible substrate used for electronic equipment, a plurality of printed wiring boards are produced by allocating them to a single standard length substrate, and after mounting the components, printing is performed. A multi-cavity method of cutting and dividing a substrate is often used.

As described above, when cutting after mounting the components, the work is performed safely and surely, and the yield is 10 without damage.
It is required to be 0% and it is desired to be able to achieve automation.

[0004]

2. Description of the Related Art FIG. 4 shows a conventional dividing method including a V-shaped cutting line. (A) is a printed circuit board, (b) is a sectional perspective view of the dividing method, and (c) is a sectional perspective view of the dividing method. Figure, Figure 5
FIG. 6 shows a printed circuit board of a conventional example of a dividing method including a router processing and a V-shaped cutting line, and FIG. 6 shows a printed circuit board of a conventional example of a thin printed circuit board dividing method.

Printed wiring boards using glass epoxy base materials and flexible substrates used in electronic equipment are generally standardized (standard size) in external dimensions from the viewpoint of material and manufacturing efficiency, and a multi-cavity method is adopted. Has been done.

As a method of cutting and dividing parts after mounting the components on this fixed-size printed circuit board, various means as described below have been taken depending on the shape, plate thickness and material of the product. Dividing method with V-shaped cutting line (1) Disc blade method or cutting blade method ... Dividing method As shown in Fig. 4 (a), the printed board 4 is formed along the outline of each printed wiring board 41. Then, V-shaped cutting lines 45 of V-shaped grooves are carved facing each other with a predetermined remaining margin from both sides, and in the drawing, they are carved in a grid pattern at right angles.

As shown in FIG. 4 (b), the disc blades 36 and 37, which are rotatable and have a peripheral edge, approach each other along the V-shaped cutting line 45 by vertically approaching each other. Although not shown, one disc blade 37 is rotationally driven by power, and the V-shaped cutting line 45 of the printed circuit board 4 is passed between the disc blades 36, 37 to cut the remaining margin. Will be divided.

(2) Disc blade system ... Dividing method Instead of the disc blade 36 on one side and the disc blade 37 facing it, a thick disc of plastic is used as shown in FIG. 4 (c). A V-shaped groove 39 for relief is engraved on the peripheral surface, and a rotary disk 38 that is rotationally driven by a drive unit (not shown) is provided, and a V-shaped cutting line 45 of the printed circuit board 4 is passed through at a predetermined interval to leave the remaining margin. It is pressed and divided while being bent. Router Processing and Dividing Method with V-shaped Cutting Lines As shown in FIG. 5, the printed board 49 is cut along the contours of the individual printed wiring boards 48 by leaving the joints 47 and processing the router. A portion 46 is provided, and a V-shaped cutting line 45 is engraved on both sides of the long joint portion 47 and is not joined.

Therefore, this joint 47 and the V-shaped cutting line 45
The joint part of is cut by pressing with a dedicated mold and divided. Method for dividing thin printed circuit board As shown in FIG. 6, a thin printed circuit board 42 having a thickness of about 0.2 mm or less is pressed along the outer shape of each printed wiring board 41, and cut portions 46 and joints 47 are formed. They are provided alternately.

This printed circuit board 42 is difficult to handle by itself, and in order to handle it easily and not to damage it, the peripheral edge portion (the hatched portion in the figure) is adhered to the reinforcing plate 7 with an adhesive so as not to touch the individual printed wiring boards 41. .

The parts are mounted in this adhered state,
Finally, the joint part 47 is cut by a dedicated mold and divided. Therefore, although not shown, a press-type relief hole is formed in the portion of the reinforcing plate 7 below the joint 47.

[0012]

However, the dividing method in which the V-shaped cutting line 45 is inserted is limited in its application because it basically corresponds only to a straight line. Dividing the cutting portion 46 of the router processing or the cutting portion 46 of the press working of the thin printed circuit board 42 requires a dedicated press die for cutting the joint portion 47, which is expensive, and the number of man-hours for attaching and detaching the press die is high. Also occurs, uneconomical,
It becomes inefficient. There were problems such as.

In view of the above problems, it is an object of the present invention to provide a printed circuit board dividing machine which can cut a curved line without using a dedicated press die, has general versatility and can be automated. And

[0014]

The above-mentioned object is, as shown in the principle configuration diagram of the present invention in FIG. 1, [1] a printed circuit board dividing machine for dividing a printed circuit board into which a plurality of printed wiring boards are allocated, and having a small diameter circle. A plate blade 31 is rotatably provided at the tip, and an upper blade 1 capable of vertically moving a predetermined distance and applying a predetermined pressing force downward, and a disc blade (32) having a small diameter facing the upper blade 1 are provided. A lower blade 2 rotatably provided at a predetermined position on the tip,
It is composed of an XY table 5 which fixes the printed circuit board 4 and moves the cutting line 44 in contact with the tip of the lower blade 2 by a control program. The upper blade 1 descends and contacts the cutting line 44 of the printed circuit board 4. , Apply a predetermined pressure to cut,
This is achieved by the printed board dividing machine of the present invention. [2] Further, the above-mentioned printed board dividing machine of the present invention, which is configured such that the upper blade 1 and the lower blade 2 are pivoted along the cutting line 44 of the printed board 4, is also applicable. [3] Further, instead of the disc blade 32 of the lower blade 2, the lower blade 22 is provided with a small spherical surface 33 or a rotatable small ball 34 at the tip, and the upper blade 1
Alternatively, the above-mentioned printed board dividing machine of the present invention, in which either one of the lower blades 22 is provided with the ultrasonic wave excitation means 8 for applying a predetermined fine vibration in the vertical direction, is also achieved. [4] Further, in place of the lower blade 2, a plurality of types of the lower blade 2 and the lower blade 22 are provided, and the selection means 6 selectively used according to the type of the printed circuit board 4 is provided. It can be adapted depending on the machine.

[0015]

Operation: That is, as shown in FIG. 1A, the disc blades 31 and 32 are vertically arranged.
Are opposed to each other, the cutting line 44 of the printed circuit board 4 is positioned between them, and pressure is applied to cut the XY table 5.
The printed circuit board 4 is moved along the cutting line 44 by the movement of, so that it is cut and divided along the cutting line 44.

At this time, the upper blade 1 and the lower blade 2 are disc blades having a small diameter.
If the shafts are rotatable so that they are always oriented in the direction of the cutting line 44 with which the 31,32 blade lines are in contact, it is possible to follow and cut not only a straight cutting line 44 but also a curved cutting line 44. it can.

Depending on the thickness of the printed circuit board 4, a V-shaped cutting line 44 is provided in the joint portion 47 of the cutting line 44 with a remaining margin of a predetermined thickness, or a V-shaped cutting line 44 is thin and can be cut by a predetermined pressure. In some cases, it is not necessary to engrave any V-shaped cutting line 44.

Further, as shown in FIG. 1B, the disc blade 32 of the lower blade 2
Instead of, the tip is made a small spherical surface 33, and a lower blade 22 provided with an ultrasonic wave excitation means 8 for applying ultrasonic vibration of a predetermined power in the vertical direction according to the plate thickness of the printed circuit boards 4, 42 is made smoother and smaller. The cutting can be performed following the cutting line 44 having the bending diameter, and the pivotal movement of the lower blade 22 toward the cutting line 44 is unnecessary.

Of course, the same effect can be obtained even if the ultrasonic excitation means 8 is provided not on the lower blade 22 side but on the upper blade 1. Furthermore, FIG.
As shown in (c), the small sphere 34 is rotatably attached in place of the small sphere 33, so that the small sphere 34 can be cut more smoothly.

Since such a lower blade 22 has no cutting ability,
It is most effective for the thin printed circuit board 42 that is handled by adhering to the lower auxiliary plate 7, and is suitable for the thin printed circuit board 4 that can be cut only by the upper blade 1, and the cutting line 44 has no cutting part of the above-mentioned conventional example. It does not matter if 46 is not provided.

If the printed board 4 is aligned and fixed to the XY table 5, the cutting line 44 is moved onto the lower blades 2 and 22 according to the data of the printed board 4 by the program, and the upper blade is moved. Since 1 is opposed to and applies a predetermined pressure, it can be cut automatically.

Thus, according to the present invention, it is possible to provide a printed circuit board dividing machine which can perform curved cutting without using a dedicated press die, has general versatility, and can be automated in operation.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the drawings. Throughout the drawings, the same reference numerals denote the same objects. FIG. 2 shows an embodiment of the present invention, (a) is a configuration perspective view, (b) is a side sectional view, and FIG. 3 is a control system diagram of one embodiment of the present invention.

The present embodiment is a general-purpose automatic dividing machine which can handle printed boards having a maximum outer diameter of 110 × 60 cm and various thicknesses. As shown in FIGS. 2 (a) and 2 (b), the printed board 4 or the reinforcing board is used. The thin printed circuit board 42 adhered to 7 is placed on the XY table 5 mounted on the base and the edge is fixed.

The upper blade 1 is hung on the tip of an upwardly protruding arm, and a 10 mmφ disc blade 31 is rotatably supported at its tip.
The moving and pressing means 92 is incorporated in the upper part thereof via the shaft rotating means 91.

In the center of the inside of the XY table 5, two lower blades 2 and 22 are erected upright under the upper blade 1 via a selecting means 6, and the lower blade 2 is the upper blade 1 of the tip. Same as, 10mm at the tip
A disk blade 32 of φ is rotatably supported, and a shaft rotating means 91 is attached to the lower part thereof.

A small ball 34 of 4 mmφ steel is rotatably fitted to the tip of the lower blade 22, and an ultrasonic wave exciting means 8 is provided below the small ball 34. Although not shown in detail in the drawings, the shaft rotating means 91 is driven by a pulse motor through a gear to rotate the shaft with high accuracy at 360 degrees.

Although not shown in detail, the movement pressing means 92 combines an air plunger as a driving source with a stopper to move and press a predetermined stroke. Ultrasonic excitation means 8
Is composed of an oscillator of about 1 MHz and a piezoelectric vibrating plate, and can be varied up to a maximum amplitude of 0.3 mm in the vertical direction under load.

The selection means 6 comprises a turntable 61, a lower blade 2,
22 is provided, and is rotated by a motor to select one of them and stop it at a fixed position, and it is held by a receiving portion 62 below the fixed position, and the tips of the lower blades 2, 22 reach the fixed position. Bid up and set.

In the case of the end, the used lower blades 2, 22 are lowered to hold the used lower blades 2, 22 on the turntable 61, and then the holding portion is released to stand by. In the case of replacement, when the receiving portion 62 enters the standby state, the turntable 61 immediately rotates to select and stop the next lower blades 2 and 22, and the above holding to setting operations are performed.

This automatic divider is controlled as shown in the control system diagram of FIG. 3 to be automated. That is, there is a floppy disk (FDD) that stores a control program and data for each printed circuit board, and a program controller that controls the blade controller and the XY table controller by this FDD. Further, the XY table controller is an X-axis controller. The drive unit and the Y-axis drive unit are controlled, the blade unit controller controls the upper blade control unit and the lower blade control unit, and the lower blade control unit controls the blade type selection unit and the receiving unit control unit. .

The operation is performed by aligning and fixing the thin printed circuit board 42, the edges of which are fixed to the printed circuit board 4 or the reinforcing plate 7 with an adhesive material, to the movable part of the XY table 5 and starting the XY table control. The X-axis drive unit and the Y-axis drive unit operate in accordance with a predetermined command to move the printed circuit boards 4 and 42, and the cutting point of the cutting line 44 comes to a position directly below the upper blade 1.

On the other hand, the lower blade control unit operates through the blade controller, the blade type selection unit rotates the turntable 61 to select one of the designated lower blades 2 and 22, and then the receiving unit control. The part holds the lower blades 2, 22 and bids up to contact the lower surfaces of the printed circuit boards 4, 42 with their tips. At this time, in the case of the lower blade 2, the shaft rotating means 91 is further driven to align the disc blade 32 with the direction of the cutting line 44.

Next, the upper blade controller operates to drive the shaft rotating means 91 to rotate the disk blade 31 so that the blade line direction is aligned with the cutting line 44, and the upper blade 1 is moved. It is lowered and brought into contact with the printed circuit boards 4 and 42, and further, a predetermined pressure is applied. In the case of the lower blade 22, the ultrasonic wave excitation means 8 is driven at a predetermined output by the receiving portion control portion at the same time as pressing. Further, the XY table controller moves the cutting section along the cutting line 44 to cut the printed boards 4 and 42.

The cutting portion may be continuously cut along the V-shaped cutting line 45, or the cutting portion 46 may be already left on the printed circuit boards 4 and 42 by router processing or press processing, leaving the joint portions 47 scattered. Is provided and only the joint portion 47 can be cut.

Printed circuit boards 4 and 42 without cutting
When moving the upper blade 1 and the lower blade 2,22,
In order not to hinder the movement of 42, the tip is located slightly away from the printed circuit boards 4, 42.

In the automatic dividing machine according to the present invention, the individual printed wiring boards 41 are not cut off from the printed boards 4 and 42, but are cut off leaving the joint portion 47 at the minimum portion that maintains a substantially flat state, and the operation is completed. Later the printed circuit boards 4, 42 are placed on the XY table 5.
It is designed to be detached from and then divided into individual pieces. This is to prevent the printed wiring board 41 on which the components are mounted from falling into the inside and being damaged if separated when cut.

As described above, when the printed circuit boards 4 and 42 are mounted, the cutting work is automatically performed thereafter. This embodiment shows an example, and the shapes, dimensions, and materials of the respective parts are not limited to the above.

The present embodiment is an apparatus provided with two lower blades 2 and 22. However, the type and number of the lower blades are not limited to this, and the selecting means corresponding to this. 6 may be provided.

Further, the principle mechanism of the selecting means 6, the ultrasonic exciting means 8, the shaft rotating means 91 and the moving pressing means 92 is not limited to the above.

[0041]

As described above, the printed board dividing machine of the present invention eliminates the need for a dedicated cutting die.

The small-diameter disc blades 31, 32 and the blade line direction thereof can be arbitrarily changed by the shaft rotating means 91, so that the general-purpose machine can cope with the cutting line 44 having an arbitrary shape. The cutting setup for each of the printed circuit boards 4 and 42 can be easily performed by only changing the program and data. Easy to incorporate into automated production lines. Since the relief plate 7 of the thin printed board 42 does not need a relief hole for press removal, the structure of the reinforcement plate 7 is simplified. It is remarkable that the above effects can be obtained and contribute to the improvement of productivity.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the present invention.

FIG. 2 is an embodiment of the present invention (a) configuration perspective view (b) side sectional view

FIG. 3 is a control system diagram of an embodiment of the present invention.

FIG. 4 is a dividing method including a conventional V-shaped cutting line (a) a printed circuit board (b) a sectional perspective view of the dividing method (c) a sectional perspective view of the dividing method

FIG. 5 is a printed circuit board of a conventional method of processing a router and a dividing method including a V-shaped cutting line.

FIG. 6 is a printed circuit board of a conventional method for dividing a thin printed circuit board.

[Explanation of symbols]

1 Upper blade 2,22 Lower blade 4,
42,49 Printed circuit board 5 XY table 6 Selection means 7
Reinforcement plate 8 Ultrasonic excitation means 31,32,36,37 Disc blade 33
Small spherical surface 34 Small spherical surface 38 Rotating disk 39
V-groove 41,48 Printed wiring board 44 Cutting line 45
V-type cutting line 46 Cutting part 47 Joint part 61
Turntable 62 Receiver 91 Axial rotation means 92
Moving and pushing means

Claims (4)

[Claims] 1. A printed circuit board dividing machine for dividing a plurality of printed circuit boards into which a small diameter disc blade (31) is rotatably provided at its tip, and is capable of moving up and down a predetermined distance and facing downward. Upper blade that can apply a predetermined pressing force
(1) and a small disc-shaped rotatable disc blade (32) facing the upper blade (1)
Fix the lower blade (2) with the tip at the predetermined position and the printed circuit board (4), and move the cutting line (44) in contact with the tip of the lower blade (2) by the control program X
The Y table (5) and the upper blade (1) descends, and the cutting line of the printed circuit board (4)
A printed circuit board dividing machine which is in contact with (44) and cuts by applying a predetermined pressure. 2. The upper blade (1) and the lower blade (2) are printed circuit boards.
The printed circuit board dividing machine according to claim 1, wherein the printed circuit board dividing machine pivots along a cutting line (44) of (4). 3. A lower blade (22) provided with a small spherical surface (33) or a freely rotatable small ball (34) at the tip instead of the disc blade (32) of the lower blade (2).
And an ultrasonic excitation means (8) for applying a predetermined slight vertical vibration to either the upper blade (1) or the lower blade (22). Item 2. The printed circuit board divider according to Item 2. 4. A plurality of types of lower blades (2) according to claim 1 or claim 2 and lower blades (22) according to claim 3 in place of the lower blade (2) according to claim 1. 2. The printed circuit board dividing machine according to claim 1, further comprising selection means (6) which is selectively used according to the type of the printed circuit board (4).