JPH073920B2 - Printed circuit board positioning device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a printed circuit board positioning device that performs positioning when an adhesive is applied on a printed circuit board or an electronic component is placed.

(B) Conventional technology Conventionally, the positioning of the printed circuit board in the automatic mounting machine for electronic parts is performed by the upper and lower movable boards as shown in JP-A-59-29493 and 59-29494. It is composed of a side shutter and the upper shutter moves so as to absorb a minute error in the width of the printed circuit board.
Then, the printed board is pressed against the fixed chute side by using the plurality of divided pieces and the protruding pieces.

C) Problems to be Solved by the Invention However, the divided pieces and the projecting pieces are worn out so much that when the position of the projecting piece needs to be changed, the fixing screw must be removed and replaced with another divided piece. Since it takes time and labor for a person, the fixing screw, the divided piece, and the like may be lost, and further, in order to change the protruding amount of the protruding piece, it is necessary to prepare a plurality of protruding pieces having different protruding amounts.

In view of this, the present invention provides a positioning device that allows the amount of protrusion to the printed circuit board to be changed without the labor of an operator.

D) Means for Solving the Problems Therefore, according to the present invention, a pair of fixed chutes and moving chutes for carrying substrates, which are provided at positions facing each other in the width direction of the printed circuit board, and the moving chute in the width direction of the board. In a printed circuit board positioning device for positioning the circuit board in the width direction, the printed circuit board positioning device comprising: By arranging a plurality of eccentric rollers whose abutting portions can be adjusted to move back and forth in the width direction of the substrate by rotating the center, the eccentric rollers are arranged side by side along the longitudinal direction of the moving chute, depending on the substrate size in the transport direction of the substrate. This allows any eccentric roller to be adjusted back and forth.

(E) Operation With the above configuration, any eccentric roller is rotated around the axis to adjust the width and direction of the substrate according to the size of the printed circuit board in the transport direction. Then, since the moving chute is pressed by the elastic means and moved toward the substrate, the substrate is pressed toward the fixed chute by the contact portion of the eccentric roller.

F) Embodiment FIG. 1 is a cutaway perspective view of a main part of a printed circuit board positioning device according to the present invention, in which (1) is a hard alumite or hard chrome fixed to a vertically movable shelter support (3) (3). A fixed shout made of a material having high wear resistance such as a metal plate is shown, and a groove portion (2) for holding an end portion on the printed circuit board (p) side is formed. (4) is the above-mentioned short support (3) (3) so as to face the fixed short (1).
The slide base is arranged on the upper side and is movable in the fixed shout (1) direction and the opposite direction, and its position is set according to the board width to be used. Reference numeral (5) denotes a movable shout which is arranged on the slide base (3) and is slidable in the fixed shout (1) direction and the opposite direction, and the long hole (6) (provided in the shout (5) ( Pins (7) and (7) provided upright from the slide base (4) are inserted into the slide base (6), and the sliding amount thereof is regulated. In addition, the surface of this transfer short (5) is hard-chrome plated. (8) is the transfer short (5)
The groove portions (9) (9) for holding the substrate provided on the rotary shaft (10) are located inside the groove portion (8) of the moving seat (5).
The rollers (9), (9), ... are fixed, and the outer peripheral portions of these rollers are in contact with the ends of the printed circuit board (P) inserted in the groove (8). Reference numeral (11) is a spring retainer attached to the outer side surface of the slide base (4) and bent upward. A large number of springs (12) are provided between the spring retainer (11) and the moving seat (5). (12)
(12) ... is detachably installed. (13) is an up-and-down cylinder that moves up and down, (14) is a turning lever that is turned by the up-and-down movement of the up-and-down cylinder (13), and is provided corresponding to the shute support bases (3) and (3), respectively. ing. That is, the rotation lever (14) is moved up and down by the up and down cylinder (13).
Is rotated so that the shute support bases (3) and (3) move up and down. Reference numerals (15) and (15) denote guide pins erected on the base (16) of the positioning device, and the guide pins are fitted into the guide holes (17) and (17) of the printed board (P) so as to be fitted to the printed board (P). Position regulation.

FIG. 2 shows a slide base (4) and a mobile short (5).
FIG. 3 is a cross-sectional view of a main part of the portion, and the same portions as those in FIG. 1 are designated by the same reference numerals. In the figure, a mobile short (5)
Is divided into an upper shout (5a) and a lower shout (5b), and a roller (9) is fixed to the lower shout (5b) by an eccentric pin (18) mechanism. Further, the rotation shaft (10) of the roller (9) and the eccentric pin (18) are eccentric, and the rotation amount of the pin (18) is adjusted through the opening (19) provided in the upper jacket (5a). It is like this.

Next, the movement and positioning of the printed circuit board using this device will be described. First, the turning lever (14) rotates clockwise (direction C in the figure) by the upward movement of the upper and lower cylinders (13), and the short support (3) (3), the fixed short (1), and the movable short (5). ) Is set upwards,
The guide pins (15) and (15) are removed from the guide holes (17) and (17) of the printed circuit board (P). In this state, the rear end of the printed circuit board (P) on the fixed shout (1) side is pushed to the B side by a feeding mechanism (not shown), and the board (P) is discharged. At the same time, a new printed circuit board (P) is conveyed to a predetermined position between the two sheets (1) and (5). Even during such a transporting operation, the moving seat (5) presses the printed circuit board (P) toward the fixed seat (1) side (direction of arrow A) by the pressing force of the springs (12) (12), but the roller (9). (9) The presence of ... makes the transportation smooth. When the printed circuit board (P) is transported to a predetermined position, the lower lever (14) rotates in the C'direction by the lowering of the upper and lower cylinders (13), and the shute support (3) (3) and the fixed shout (3). 1) and the moving seat (5) and the board (P) descend, and the guide pins (15) are inserted into the guide holes (17) (17) of the printed board (P).
(15) is fitted and positioning is completed. During such positioning, the rollers (9), (9), ... Are fixed to the moving seat (5), so that the immersion of the printed circuit board (P) in the groove (8) is kept constant.

In such a positioning state, work such as application of adhesive and placement of electronic parts is performed, and after this work, the same operation as that for replacing the printed circuit board (P) with a new one is executed.

By the way, in such a positioning device, the printed circuit board (P) is moved from the moving chute (5) side to the fixed chute (1).
If the intermediate position of the substrate (P) is strongly pressed when positioning the substrate (P), the substrate (P) to the fixing shout (1) side is positioned.
The contact of the end faces becomes uniform and the positioning becomes accurate. Therefore, the rotation angle of the eccentric pin (18) of each roller (9) (9) ... is adjusted according to the shape of the substrate (P) used, as shown in FIGS. 3 (A) (B) (C). It is necessary to set the protruding / retracting state of the roller (9) to each roller (9)
... An opening (19) is provided in the upper shout (5a) of the upper surface so that the rotation angle of the eccentric pin (18) can be easily set.
Here, A is the size of the roller (9) that can be projected by the eccentric pin (18), and B is the eccentric size of the eccentric pin (18).

Further, the pressing force for pressing the moving seat (5) must be adjusted according to the shape of the printed circuit board (P) used, but since the springs (12) (12) ... Are detachably provided. By adjusting the attachment / detachment state of the springs (12) (12) ..., it is possible to support a substrate having a desired shape.

As described above, according to the present invention, according to the present invention, the amount of protrusion of the abutting portion can be obtained only by rotating an arbitrary eccentric roller among the plurality of eccentric rollers according to the size of the printed circuit board in the carrying direction. Since it is possible to change the position of the divided piece having the protruding piece as in the prior art, it is possible to remove the fixing screw and replace it with another divided piece because it is possible to change the position of the divided piece as in the prior art. Compared with this, the labor of the operator is saved and the fixing screws and the divided pieces are not lost. For example, the eccentric roller to be adjusted can be surely positioned by adjusting the eccentric roller located at the intermediate position of the printed board to be handled, and avoids the cutout when the printed board has a cutout. Can be dealt with by adjusting other eccentric rollers. Furthermore, since the contact portion is a roller, it wears little and can be used for a long period of time.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view of an essential part of a positioning device for a printed circuit board according to the present invention, FIG. 2 is a cross-sectional view of the essential part, and FIG. 3 is a state schematic diagram when the retracted state of a roller is changed. (1) …… Fixed short, (2) (8) …… Groove,
(3) (3) …… Shute support, (4) …… Slide base, (5) …… Movement shout, (9) (9) …… Roller, (10) (10) …… Rotary axis, ( 11) …… Spring holder,
(12) (12) …… Spring, (13) …… Upper and lower cylinder, (1
4) …… Rotating lever, (15) (15) …… Guide pin, (1
7) (17) …… Guide hole, (18) …… Eccentric pin, (19)
…… Aperture.

Claims (1)

[Claims] 1. A pair of a fixed chute and a moving chute for transferring a substrate, which are provided at positions facing each other in the width direction of a printed circuit board, and a pressing means for pressing the moving chute in the width direction of the substrate via elastic means. A printed circuit board positioning device for positioning the printed circuit board in the width direction, which is capable of contacting an end face in the width direction of the printed circuit board and is rotated about an axis to bring the contacting part into contact. A plurality of eccentric rollers capable of advancing and retracting in the width direction of the substrate are arranged in parallel along the longitudinal direction of the moving chute, and advancing and retracting any eccentric roller according to the substrate size in the transport direction of the substrate. A printed circuit board positioning device characterized by: