JPH1044138A - Method and apparatus for dividing board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide method and apparatus for dividing a rectangular board constituted by continuously connecting small boards in one row into the small boards, without applying a pressure to component parts placed on the board. SOLUTION: A rectangular board 4 is clamped by feed rollers 2a, 2b from a side, fed forward, and simultaneously fixed. And, the board 4 is clamped at its forward end by oblique rollers 3a, 3b from the side, applied by a downward force, and divided into small boards. The board is clamped from the side, no pressure is hence applied onto the board, and a situation that a mounting component part is damaged can be avoided. An irregularity of the pressure due to an irregularity of heights of the parts is eliminated as compared with a method for applying the pressure to a board surface. And, a crack of an unnecessary portion of the board due to the irregularity of the pressure or a burr of the divided portion can be suppressed to a minimum limit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for dividing a substrate used for mounting electronic components, and more particularly to a substrate dividing method for dividing a strip-shaped substrate into final small substrates.

[0002]

2. Description of the Related Art In a printed circuit board, a ceramic substrate, and the like, a large number of small boards are provided vertically and horizontally continuously on a single rectangular board by dividing grooves. A pattern is formed, and components such as an IC and a transistor are mounted thereon. After that, the rectangular substrate is first divided into strip-shaped substrates in which small substrates are arranged in a row using scribe grooves, and finally, the rectangular substrates are divided into small substrates. As a method of dividing the strip-shaped substrate into small substrates, the following method has been conventionally used.

FIG. 3 shows an example of a conventional substrate dividing apparatus.
FIG. 3 is a diagram of the substrate dividing apparatus viewed from the lateral direction. In FIG. 3, the substrate dividing device includes a belt conveyor 7, a feed roller 8, and a pressure roller 9. The feed roller 8 and the pressure roller 9 have the same diameter, and their rotation axes are horizontally arranged perpendicular to the direction of travel of the substrate, and the rotation axis of the pressure roller 9 is slightly lower than the rotation axis of the feed roller 8. ing. Further, reference numeral 10 denotes a strip-shaped substrate, 11 denotes a mounted component mounted on the substrate 10, and 12 denotes a dividing groove provided on the substrate 10. In the substrate 10, a plurality of small substrates are arranged in a line with each other via a dividing groove 12.

Next, a method of dividing the substrate 10 will be described. The substrate 10 is carried by the belt conveyor 7 and is sent to the feed roller 8. The feed roller 8 holds the sent substrate 10 between the belt conveyor 7 so as not to move up and down, and sends the substrate 10 toward the pressure roller 9. Since the rotation axis of the pressure roller 9 is disposed lower than the rotation axis of the feed roller 8, the pressure roller 9 applies pressure downward from the top of the small substrate of the substrate 10 or the mounting component 11 mounted thereon. Is added. At this time, the second small substrate of the substrate 10 is the belt conveyor 7
And the feed roller 8. As a result, the substrate 1
0 is the first small substrate and the dividing groove 1 between the second small substrate
Divided by two.

[0005]

In the above-described substrate dividing method, the feed roller and the pressure roller apply pressure to the component mounting surface of the substrate. On the other hand, pressure may be applied from above. Therefore, in this method, there is a strong possibility that the mounted component is damaged, and it is particularly fatal in the case of a component on which a bare chip is mounted.

[0006] The shape of the mounted component differs depending on the type. When the position of the pressure roller is fixed, the pressure by the pressure roller changes depending on the type of the substrate, particularly when the height of the mounted components is different. Since the pressure condition is not stable, there is a possibility that the substrate is cracked at a portion other than the dividing groove or burrs are generated at the divided portion.

Accordingly, an object of the present invention is to provide a substrate dividing method and a substrate dividing apparatus which can divide a substrate with a constant force without applying pressure to a mounted component and irrespective of the shape of the mounted component.

[0008]

In order to solve the above-mentioned problems, a substrate dividing method according to the present invention provides a strip-shaped substrate in which a plurality of small substrates are arranged in a line, and the rotation axis is vertical. Using a pair of feed rollers rotating in opposite directions opposite to each other, clamping the substrate from the side surface and sending it forward, and a rotation axis is inclined in the direction of travel of the substrate with respect to the vertical direction, and faces each other. Using a pair of inclined rollers that rotate in the opposite direction, and separating and dividing the leading small substrate from the substrate by clamping the front end of the substrate from the side and sending it forward and downward. I do.

Further, the substrate dividing apparatus of the present invention is a substrate dividing apparatus for dividing a strip-shaped substrate formed by arranging a plurality of small substrates in a line into small substrates. A pair of feed rollers opposing and rotating in the opposite direction,
It is characterized by having a pair of inclined rollers that are positioned in the traveling direction of the substrate with respect to the feed roller, the rotation axis is inclined in the traveling direction of the substrate with respect to the vertical direction, and rotates in opposite directions opposite to each other. And

[0010]

FIG. 1 shows an embodiment of a substrate dividing apparatus according to the present invention. FIG. 1A is a top view of the substrate dividing apparatus, and FIG. 1B is a side view. In FIG. 1, the substrate dividing device includes a dividing guide 1, a feed roller 2, and an inclined roller 3. Reference numeral 4 denotes a strip-shaped substrate, 5 denotes a mounted component mounted on the substrate 4, and 6 denotes a dividing groove of the substrate 4. In the substrate 4, a plurality of small substrates are connected to each other in a line via a dividing groove 6.

The feed roller 2 has two rollers 2a,
2b, the rotation axes of which are vertically opposed to each other, and rotate synchronously in opposite directions. The division guide 1 is arranged horizontally between two rollers of the feed roller 2. On the other hand, the inclined roller 3 has two rollers 3a, 3
The rotation axis is arranged so as to be opposed to the vertical at a predetermined angle in the traveling direction of the substrate 4 with respect to the vertical direction, and rotate synchronously in opposite directions.

Next, a method of dividing the substrate 4 will be described.
FIG. 2 is a perspective view showing the flow of the operation divided into four parts.

In FIG. 2, the substrate 4 is sent out toward the feed roller 2 while being set on the division guide 1 (FIG. 2A). The feed roller 2 clamps the substrate 4 from its side in the longitudinal direction and sends it to the inclined roller 3 by rotating the substrates 2a and 2b in opposite directions while fixing the substrate 4 together with the division guide 1 so as not to move vertically or diagonally. (FIG. 2 (b)).

The inclined roller 3 clamps the front end of the substrate 4 sent from the feed roller 2 from the side in the longitudinal direction, and tries to send it further by rotating 3a and 3b in opposite directions. At this time, the rotation axis of the inclined roller 3 is inclined at a certain angle with respect to the rotation axis of the feed roller 2 with respect to the traveling direction of the substrate 4.
A downward force in the traveling direction is applied to the leading small substrate of the substrate 4 clamped by (FIG. 2C). At this time, 2
Since the second small substrate remains fixed between the feed roller 2 and the division guide 1, the first small substrate of the substrate 4 is divided according to the division groove 6 (FIG. 2D).

At this time, both the feed roller 2 and the inclined roller 3 apply pressure to the substrate 4 from the side.
No pressure is applied to the upper mounted component 5.

[0016]

According to the substrate dividing method of the present invention, the substrate is divided by oblique force by the inclined roller while clamping the side surface of the strip-shaped substrate. The board can be split under stable conditions without applying pressure and regardless of variations in the height of mounted components, etc., minimizing cracks at unnecessary parts of the board and burrs at split parts. Can be suppressed. Further, according to the substrate dividing apparatus of the present invention, the substrate can be divided with a relatively simple configuration, and since no pressure is applied to the mounted components on the substrate, the components are not damaged, and the reliability is improved. High and high quality substrate division becomes possible.

[Brief description of the drawings]

FIG. 1 is a view showing a configuration of an embodiment of a substrate dividing apparatus according to the present invention, wherein (a) is a top view and (b) is a side view.

2A and 2B are diagrams illustrating a process of dividing a substrate using the substrate dividing device of FIG. 1, wherein FIG. 2A illustrates a state in which the substrate is set in the substrate dividing device, and FIG. Figure,
(C) is a diagram showing a state in which a downward force is applied to the front end of the substrate, and (d) is a diagram showing a state in which the substrate is divided.

FIG. 3 is a diagram showing a configuration of a conventional substrate dividing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Dividing guide 2 ... Feeding roller 3 ... Inclined roller 4 ... Strip-shaped board 5 ... Mounting parts 6 ... Dividing groove

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoshi Kurihara 2-26-10 Tenjin, Nagaokakyo-shi, Kyoto, Japan Murata Manufacturing Co., Ltd.

Claims (2)

[Claims] 1. A strip-shaped substrate in which a plurality of small substrates are arranged in a line is prepared, and the substrate is rotated by using a pair of feed rollers having a vertical rotation axis and rotating in opposite directions to face each other. A step of clamping forward from the side and sending it forward, using a pair of inclined rollers whose rotation axis is inclined in the direction of travel of the substrate with respect to the vertical direction and opposed to each other and rotates in the opposite direction, the tip of the substrate is A substrate dividing method, comprising a step of separating / dividing a leading small substrate from the substrate by clamping the substrate from the side and sending it forward and downward. 2. A substrate dividing apparatus for dividing a strip-shaped substrate, in which a plurality of small substrates are arranged in a line, into small substrates, wherein the rotation axes are perpendicular to each other and rotate in opposite directions opposite to each other. A pair of feed rollers, and a pair of tilts located in the direction of travel of the substrate with respect to the feed roller, the rotation axis of which is inclined in the direction of travel of the substrate with respect to the vertical direction, and rotates in opposite directions facing each other. A substrate dividing device having a roller.