JP2001047390A - Board dividing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board dividing machine capable of eliminating stress applied to a printed circuit board when it is divided. SOLUTION: A board dividing machine is furnished with a pair of stationary blades 7a (and 7b) laid parallel with the cutting edges 12 directed in the same direction and the side faces positioned opposing and a movable blade 8 having a cutting edge 15 positioned between the stationary blades 7a (and 7b) in such a way as advancing and retracting to/from the direction confronting the cutting edges 12 of the stationary blades 7a (and 7b), and a collective printed circuit board 100 positioned between the cutting edges 12 of the stationary blades 7a (and 7b) an the cutting edge 15 of the movable blade 8 is cut through their engagement with each other when the movable blade 8 is retracting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board dividing machine suitable for dividing a collective printed circuit board composed of a plurality of individual boards into individual boards.

[0002]

2. Description of the Related Art In the manufacture of a printed circuit board on which components of a surface mount type are mounted, a plurality of sections are formed in advance on a single large board, and after mounting the same circuit element in each section, each section is formed. In many cases, a so-called multi-paneling method is employed in which individual printed circuit boards are obtained by dividing the board along division lines between the sections. This method is effective in improving mass production efficiency.

[0003]

By the way, printed circuit boards on which electronic components are mounted have recently been reduced in density and size. The circuit board, components,
The solder and the like are fine, and the current is very small. Further, if stress is applied to the printed circuit board when dividing the printed circuit board, the circuit function of the printed circuit board is impaired due to aging. Further, it is known that the adhesion of fine dust to a printed circuit board causes corrosion and rot, which also inhibits circuit functions.

[0004] In view of the conventional method of cutting a collective printed circuit board, for example, a cutting method using a router (see FIG. 8), a cutting method using a metal saw (see FIG. 9), and a cutting method using a nipper (see FIG. 10). In addition, a punching method using a mold (see FIG. 11) and the like are frequently used. When multiple cutting is performed by this cutting method, each method has the following problems.

[0005] In the cutting method using a router shown in FIG.
0 is cut and divided by small amounts, and has a feature that it can cut not only a straight line but also a curve. However, there is a disadvantage in that cutting powder of the collective printed circuit board 100 is generated, and it is necessary to treat the scattered dust and clean the dust attached to the collective printed circuit board 100.

The cutting method using a metal saw shown in FIG.
This is a method in which the collective printed circuit board 100 is cut by the rotating metal saw 102 so that only a straight line can be cut. However, there is an advantage that the cutting speed is faster and more efficient than a cutting method using a router. However, as in the case of the cutting method using a router, there is a disadvantage that cutting powder of the collective printed circuit board 100 is generated, and it is necessary to treat the scattered dust and clean the dust attached to the collective printed circuit board 100.

The cutting method using a nipper shown in FIG. 10 is a method in which the collective printed circuit board 100 is completely sandwiched by using a cutting tool 103 such as an electric nipper or an air nipper, and this method does not generate cutting powder. However, stress is applied to the collective printed circuit board 100 in the process of cutting and cutting the collective printed circuit board 100 from the state shown in FIG. 10A to the state shown in FIG. However, there is a drawback that it cannot be used for the collective printed circuit board 100 which requires the following.

[0008] The punching method using a mold shown in FIG.
Upper die 1 according to collective printed circuit board 100 to be divided
04a and a lower mold 104b.
b, the printed circuit board 100 is placed on the
The upper mold 104a is press-moved and punched. This method has the advantages of less generation of dust and faster dividing speed than other methods, but has the disadvantage that excessive stress is applied to the substrate, a mold is required for each collective printed circuit board 100, and the cost is high. is there.

The present invention has been made in view of the above problems. An object of the present invention is to provide a board dividing machine which eliminates the above-mentioned problems, has a relatively simple structure, and can eliminate stress applied to a pudding board when the printed board is divided. Another object of the present invention is to provide a board dividing machine having a structure that does not contaminate a printed board with dust generated at the time of cutting and does not deteriorate a working environment. Further, other objects will be clarified sequentially in the contents described below.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and comprises a pair of fixed blades having their blades oriented in the same direction and juxtaposed with their side surfaces facing each other.
A movable blade having a cutting edge that advances and retreats in a direction facing the cutting edge of the pair of fixed blades, between the cutting edge of the pair of fixed blades, and a cutting edge of the movable blade. And cutting the collective printed circuit board disposed between the blades of the movable blade and the blade of the fixed blade when the movable blade exits.

According to this configuration, the collective printed circuit board is disposed between the pair of fixed blades and the movable blade that advances and retreats between the pair of fixed blades. And cut the collective printed circuit board with shear force
Cutting can be performed without applying stress to the collective printed circuit board. That is, the collective printed circuit board is fixed in position by the cutting edge of a pair of fixed blades, and since the cutting edge of the movable blade advances and retreats between the two cutting edges, it does not receive excessive stress as shown in FIG. Cutting is performed efficiently by the reciprocating drive of only the blade.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. The embodiments described below are preferred specific examples of the present invention, and various technically preferable limitations are added. However, the technical scope of the present invention is not limited to these embodiments. Absent.

FIG. 1 and FIG. 2 are views showing the main structure of a substrate dividing machine according to the present invention. 1 and 2, the board dividing machine 1 exemplifies a case in which the collective printed circuit board 100 shown in FIGS. 8 to 11 is cut along a dividing line. Pneumatic cylinder 3 as a driving source for generating a cutting force, power transmission means 4 for transmitting the driving force of pneumatic cylinder 3 to cutting head 2, and generated when divided printed circuit board 100 is divided by cutting head 2. And the like, and is attached to a robot (not shown). On the other hand, the collective printed circuit board 100 is set on a set holding mechanism (not shown).

In the board dividing machine 1, the collective printed circuit board 10 held by the set holding mechanism portion
0, the cutting head 2 is moved by the robot to XY-θ.
The collective printed circuit boards 100 are sequentially moved in the directions, and are cut at the moved positions along predetermined division lines, so that the collective printed circuit boards 100 can be individually separated. The collective printed circuit board 100 may be moved instead of moving the cutting head 2 in the XY-θ direction.

[0015] More specifically, the cutting head 2 is shown in FIG.
As shown in FIG. 5 through FIG.
A pair of right and left fixed blades 7a, 7b assembled to the fixed holder 6 of FIG.
And a movable blade 8 and the like. Among these, the pair of fixed blades 7a and 7b are installed downward or vertically in a state where plate members having substantially the same external shape are superposed on each other and face each other. FIGS. 1 and 2 show a state where the fixed blade 7b on one side is detached from the fixed blade 7a for easy understanding of the internal structure of the cutting head 2. Therefore, in practice, the fixed blades 7a and 7b are arranged so as to overlap each other as shown in FIGS.

A pair of fixed blades 7 in the cutting head 2
a and 7b, one fixed blade 7a is fixed to the fixed holder 6 with a pair of front and rear bolts 9, and the other fixed blade 7b is attached to the fixed blade 7b with a pair of front and rear bolts 11, and each fixed blade 7a, The respective cutting edges 12 of 7b are arranged side by side. In this case, in the fixed blade 7b, on the surface facing the fixed blade 7a, an upper fixed portion 10 is formed to be one step thicker from a substantially vertical middle position as shown in FIG. 3 or FIG. A guide groove 10 that allows the movable blade 8 to be inserted in the vertical direction approximately in the middle of the front and rear of the portion 10
a is provided. The fixed blade 7b is provided with a pair of front and rear insertion holes 13 as shown in FIG.
Is provided with a pair of front and rear screw holes (female screws) 14 corresponding to the respective insertion holes 13. And both fixed blades 7a, 7
b is firmly integrated by screwing the bolt 11 with the head 11a from the insertion hole 13 into the screw hole 14. A gap 18 corresponding to the movable blade 8 is formed below the fixed portion 10 between the integrated fixed blades 7a and 7b. The gap 18 corresponds to the overhang dimension of the fixed portion 10 and is a value that allows the movable blade 8 to move between the fixed blades 7a and 7b as shown in FIG. It is set slightly larger than.

The structure of the movable blade 8 will be further described. The movable blade 8 has an L-shaped portion 8a (a tip or lower end portion 8a) protruding from the lower end thereof, and is fixed to the upper surface of the portion 8a. A cutting edge 15 is formed so as to face the cutting edge 12 of the blades 7a and 7b. The movable blade 8 is slid so that the blade edge 15 is fixed to the fixed blade 7 as shown in FIGS.
The "projection position" in which the protrusion protrudes from the lower ends of the fixed blades 7a and 7b, as shown in FIG.
Can be switched to the “retreat position” retracted inside the blade, and when the “protruding position” is moved from the “retreat position” to the
When the cutting edge 15 meshes with the cutting edge 15, the collective printed circuit board 100 can be cut.

The cutting operation of the divided head will be described with reference to the schematic diagram of FIG. 7. First, before the movable blade 8 moves from the projecting position to the retracted position, the fixed blades 7a and 7b are moved.
As shown in FIG. 7A (the same applies to the collective printed circuit board 100 shown in FIGS. 1 and 4) between the cutting edge 12 of the movable blade 8 and the cutting edge 15 of the movable blade 8, Is placed. Subsequently, when the movable blade 8 is moved to the retracted position by receiving the driving force of the pneumatic cylinder 3 to be described later, the fixed blades 7 a , 7
b and the fixed blade 7
The cutting edge 15 of the movable blade 8 contacts the surface opposite to the surfaces a and 7b.
When the movable blade 8 is further moved to the retracted position, as shown in FIG. 7 (b), the group of fixed blades 7a, 7b and the movable blade 8 engage with each other to divide the collective printed circuit board 100 into the dividing line 1.
6 can be cut. Therefore, the cutting here is a cutting by shearing without applying stress to the collective printed circuit board 100. When the cutting at that position is completed, the movable blade 8 is returned from the retracted position to the projecting position again, and the fixed blades 7a and 7b are aligned with the dividing line 16 by the robot so that any one of X, Y, and θ can be used. The printed circuit boards 100 are sequentially moved in the same direction, and are switched from the protruding position to the retracted position again at the moved position. Further, the cutting chips 17 generated when cutting is performed by the movable blade 8 are stored in the gap 18 between the fixed blade 7a and the fixed blade 7b when the movable blade 8 moves to the retracted position. The processing is performed by the processing means 5.

The cutting waste treatment means 5 has the gap 18, a cutting waste pocket 19 formed on the inner surface of the fixed blade 7a, an air blowing hole 20 leading into the cutting waste pocket 19, and an air blowing hose 21. It is composed of an air blowing means having an air blowing means and a cutting waste suction hose 22. FIG. 6 shows the structure of the inner surface of the fixed blade 7a. From the inner surface side, the cutting dust pocket 19, the air blowing hole 20, the groove 23, the discharge port 24 and the like can be seen.

The cutting waste pocket 19 is provided with the cutting edge 1 of the movable blade 8.
5 are provided corresponding to the locus on which the movable blade 8 is moved. When the movable blade 8 is moved to the retracted position by cutting the collective printed circuit board 100, the collective printed circuit board is drawn into the gap 18 by the movable blade 8. 100 pieces of cutting waste 17 can be stored, and a discharge port 24 for discharging the stored cutting waste 17 is provided at the front end side of the fixed blade 7a.

The air blowing hole 20 communicates with the cutting waste pocket 19 via a groove 23 on the inner surface side of the fixed blade 7a. The outlet of the air outlet hose 21 is densely connected to the air inlet 20 on the outer surface side of the fixed blade 7a. The other end of the air blowing hose 21 is connected to an air supply source (not shown) so that compressed air from the air supply source can be blown into the cutting waste pocket 19 through the air blowing hole 20. It has become.

The cutting waste suction hose 22 is provided with the fixed blade 7.
a, 7b, the suction port 2 corresponding to the discharge port 24 at the front end side.
2a (see FIG. 4) are closely connected. The other end of the cutting waste suction hose 22 is connected to a vacuum device (not shown), and the cutting waste that is forcibly swept out of the cutting waste pocket 19 by the air blown into the air blowing hole 20. 17 is forcibly sucked and discharged to a predetermined place. Therefore, in the cutting head 2 according to the present embodiment, the cutting waste 1 generated at the time of cutting is removed.
After being temporarily stored in the cutting dust pocket 19, the dust 7 is forcibly swept out by the air sent out through the air blowing hose 21, and the swept cutting dust 17 is cut through the discharge port 24. The dust is sucked into the dust suction hose 22 and is forcibly discharged to a predetermined position. Thereby, the cutting waste 17 does not adhere to the surface of the collective printed circuit board 100, and is not scattered in the work place and pollutes the indoor air.

The pneumatic cylinder 3 is fixed to the fixed holder 6, and has a rod 25 which moves forward and backward in the direction in which the movable blade 8 slides, that is, in the vertical direction. The pneumatic cylinder 3 is connected to a hydraulic drive unit (not shown), and the “up position” in which the rod 25 is raised upward and retracted into the pneumatic cylinder 3 under the control of the hydraulic drive unit.
(See FIG. 1) and a “down position” (see FIG. 2) in which the rod 25 is lowered downward and protrudes greatly from the pneumatic cylinder 3.

The power transmission means 4 includes a first arm 26 and a second
And an arm 27. The first arm 26 is formed of a flat plate. One end is fixed to the fixed holder 6 via a pivot 28, and the other end is a movable blade 8 via a pivot 29.
Is rotatably linked to the upper end of the link. Also, the first
A window hole 30 is formed in a substantially middle portion of the arm 26. The second arm 27 is also formed of a flat plate material, similarly to the first arm 26, and has an intermediate portion provided with the window hole 3 of the first arm 26.
It is rotatably attached to a fixed shaft 31 attached to the fixed holder 6 through the inside of the fixed holder 6. Further, one end of the second arm 27 is rotatably attached to the distal end of the rod 25 of the pneumatic cylinder 3 via a pivot 32, and the other end is connected to an intermediate portion of the first arm 26 via a pivot 33. It is structured to be rotatable.

In the power transmission means 4, when the rod 25 of the pneumatic cylinder 3 is at the raised position as shown in FIG. 1, the second arm 27 is displaced clockwise about the pivot 31 as a fulcrum. At the same time, the first arm 26 is displaced clockwise about the pivot 28,
The movable blade 8 has been moved to the “projecting position”. On the other hand, when the pneumatic cylinder 3 is driven and its rod 25 is moved to the “down position” as shown in FIG. 2, the second arm 27 rotates counterclockwise around the pivot 31. When the movable blade 8 is moved, the first arm 26 is also rotated counterclockwise about the pivot 28 so that the movable blade 8 is moved to the "retreat position". When the movable blade 8 is moved to the retracted position, the fixed blade 7
The collective printed circuit board 100 disposed between the movable blades a and 7b is cut by the fixed blades 7a and 7b and the movable blade 8. Further, when the pneumatic cylinder 3 is driven and the rod 25 of the pneumatic cylinder 3 is moved to the raised position, the first arm 26, the second arm 27, and the movable blade 8 each move in the direction opposite to the front. Then, the state returns to the state shown in FIG.

Therefore, in the substrate dividing machine 1 according to the present embodiment configured as described above, the pneumatic cylinder 3
The movable blade 8 reciprocates by the driving of the fixed blade 7a,
7b can be cut by shearing force and divided into individual printed circuit boards, so that the collective printed circuit board 100 can be cut without applying stress, and The reliability can be ensured even when the printed circuit board is cut.

The cutting chips 17 generated at the time of cutting are drawn by the movable blade 8 between the fixed blades 7a and 7b,
This is stored in the chip pocket 19 and is forcibly swept out of the chip pocket 19 by air blown into the chip pocket 19 through the air blowing hole 20 and the groove 23 from the air blowing hose 21. Since the swept cutting debris 17 is forcibly sucked by the cutting debris suction hose 22 and stored in a predetermined position, the printed circuit board is contaminated with dust generated at the time of cutting. Can be prevented from deteriorating.

Further, the power transmission means 4 is connected to the first arm 26
And a second arm 27. One end of the first arm 26 is rotatably attached to the fixed holder 6 via a pivot 28, and the other end is pivotally attached to the upper end of the movable blade 8 via a pivot 29. Attachment, the middle of the second arm 27 is pivotally attached to the fixed holder 6 via the pivot 31, and one end of the second arm 27 is pivotable to the tip of the rod 25 of the pneumatic cylinder 3 via the pivot 32. And the other end is rotatably attached to the intermediate portion of the first arm 26 via the pivot 33, so that the movable blade 8 can be moved forward and backward even with a cylinder mechanism having a small capacity. Can be increased, and the compactness and reliability of the device can be improved.

In the structure of the above embodiment, a structure using the pneumatic cylinder 3 as a drive source for driving the movable blade 8 is disclosed. In addition, a hydraulic cylinder, a motor other than a cylinder mechanism, and the like are used. It may be.

[0030]

As described above, in the board dividing machine of the present invention, the collective printed circuit board is arranged between the pair of fixed blades and the movable blade which advances and retreats between the pair of fixed blades. Since the collective printed circuit board is cut by the shearing force of the fixed blade and the movable blade, the cut can be performed without applying stress to the collective printed circuit board. Thus, it is possible to reliably prevent the circuit function from being hindered at the time of cutting, and it can also be used for a high-density printed circuit board or the like. In the case where the cutting means is provided, the cutting chips generated at the time of cutting can be forcibly suctioned to prevent the cutting chips from adhering to the printed circuit board or scattering into the work place.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a main structure of a substrate dividing machine according to an embodiment of the present invention.

FIG. 2 is a view showing a main part structure of the substrate dividing machine of FIG. 1 in a different mode.

FIG. 3 is a front view of a cutting head portion in the substrate dividing machine of FIG.

FIG. 4 is a perspective view of the cutting head.

FIG. 5 is a longitudinal sectional view of the cutting head.

FIG. 6 is a view showing an inner surface structure of a fixed blade in the cutting head portion.

FIG. 7 is an explanatory diagram of a cutting operation in the cutting head portion.

FIG. 8 is a diagram showing an example of a conventional method of cutting a collective printed circuit board.

FIG. 9 is a diagram showing another example of a conventional method of cutting a collective printed circuit board.

FIG. 10 is a diagram showing still another example of a conventional method of cutting a collective printed circuit board.

FIG. 11 is a view showing still another example of a conventional method of cutting a collective printed circuit board.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Substrate dividing machine, 2 ... Cutting head, 3 ... Pneumatic cylinder,
4 ... power transmission means, 5 ... cut waste treatment means, 7a, 7b ...
Fixed blade, 8: movable blade, 10: pressure adjusting spring, 11: bolt,
12 ... cutting edge, 15 ... cutting edge, 16 ... dividing line, 17 ... cutting waste, 18 ... gap, 19 ... cutting waste pocket, 20 ... air blowing hole, 21 ... air blowing hose, 22 ... cutting waste suction hose, 23 ... groove , 24 ... outlet, 26 ... first arm, 27 ... second arm, 100 ... collective printed circuit board.

Claims (4)

[Claims] 1. A board dividing machine that divides a collective printed circuit board for multi-cavity into individual boards along a dividing line, comprising: a pair of fixed blades having the cutting edges directed in the same direction and arranged side by side so as to face each other. A movable blade having a cutting edge that advances and retreats in a direction facing the cutting edge of the pair of fixed blades, between the cutting edge of the pair of fixed blades, and a cutting edge of the movable blade. A cutting board that is arranged between the movable blade and the fixed blade when the movable blade is retracted. 2. The internal surface of the fixed blade has a pool portion for receiving cutting debris drawn between the pair of fixed blades by the movable blade when cutting the collective printed circuit board. 2. The substrate dividing machine according to 1. 3. The cutting debris taken into the pool portion by blowing air into the pool portion is forcibly swept out of the pool portion, and the sweeping debris is forcibly suctioned. 3. The substrate dividing machine according to claim 2, further comprising cutting waste processing means. 4. The apparatus according to claim 1, further comprising a fixed holder, wherein the pair of fixed blades are fixedly held to the fixed holder, and the movable blade is driven via power transmission means. Substrate dividing machine.