JPH06237095A - Holding carrying method of printed board and its device - Google Patents

Abstract

PURPOSE:To prevent troubles from arising during automatic transfer of a printed board and to correspond to change of a board thickness. CONSTITUTION:When a printed board 10 is carried and transferred from a carrierless belt conveyor in a preceding process to a carrierless automatic soldering device, an upper holding click 5 is opened following an opening/closing guide bar 8 for preparing to receive the printed board 10 while a holding basic click 4 of the carrierless automatic soldering device moves in a circle arc. Then, after it is received, the opening/closing guide bar 8 is removed from the upper holding click 5 and the upper holding click 5 presses and fixes an upper surface of the printed board 10. The holding basic click 4 holds an lower surface of the printed board 10 and guides it transversely at the same time while moving.

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 holding and carrying a printed circuit board, and more particularly to a method for automatically carrying a printed circuit board in an automatic soldering device after inserting / mounting electronic components on the printed circuit board. The present invention relates to a method and apparatus for holding and carrying a printed circuit board.

[0002]

2. Description of the Related Art FIGS. 4 and 5 (a) and 5 (b) are block diagrams of a conventional printed circuit board holding / conveying device, FIG. 4 is a holding / conveying device, and FIGS. 5 (a) and 5 (b) are drawings. 4 is an enlarged view of part A of FIG.
In the figure, 21 is a holding claw, 22 is a motor, 23 is a gear, 24
Is a chain, 25 is an electronic component, and 26 is a printed circuit board. The molded product, or the upper and lower surfaces of the printed circuit board 26 are integrally held by the ends of the holding claws 21, and the holding claws are moved using the motor 22 via the gear 23 and the chain 24. In FIG. 5A, the solid line portion of the printed circuit board 26 has a plate thickness of 0.3 cm, and the dotted line portion has a plate thickness of 1 cm.
Are shown respectively. The shape of the end of the holding claw 21 is 3 mm
It is a vertical plane up to and a slope is above it. Figure (b) is a partially enlarged view of Figure (a), and it is possible to hold up to a plate thickness of 3 cm by the inclined portion.

[0003]

As described above, in the conventional printed circuit board holding / conveying apparatus, when the board is conveyed from the carrierless belt conveyor in the previous step to the carrierless automatic soldering apparatus, the warp on the printed circuit board is prevented. It can be delivered because it is angled up to 3 mm, but if it has more overhang, it will break the substrate or cause other transfer errors. Further, when the size of the printed circuit board is the same and the thickness of the printed circuit board is changed, the carrying width of the printed circuit board of the carrierless automatic soldering device must be adjusted each time.

The present invention has been made in view of the above circumstances, and prevents various troubles due to the overhang of the printed circuit board when the printed circuit board is automatically delivered, and in the case of the same size printed circuit board, It is an object of the present invention to provide a printed circuit board holding and carrying method and apparatus capable of holding and carrying the printed board without changing the carrying width even if the board thickness changes.

[0005]

In order to achieve the above object, the present invention provides (1) a method of holding and carrying a printed circuit board in a carrierless automatic soldering device, wherein the lower surface of the printed circuit board is held and the lateral direction And a second holding means for holding the upper surface of the printed circuit board by an opening / closing operation, which is a separate body from the first holding means. The second holding means separates from the first holding means by the opening operation, and after the printed board is mounted, the printed board is held and conveyed by the closing operation of the second holding means, or (2) In a carrier for holding and carrying a printed circuit board in a carrierless automatic soldering device, a basic holding member that holds the lower surface of the printed circuit board and guides in the lateral direction, and a separate body from the basic holding member. Provided, is obtained by a retractable holding member for holding the upper surface of the printed circuit board has a closing means, characterized in that it consists of an opening and closing member for opening and closing operation of the open-closing holding member.

[0006]

As a method of holding and transporting a printed circuit board, a basic holding member and an opening / closing type holding member are provided separately, and the opening / closing type holding member opens when the printed circuit board is transferred by the opening / closing operation.
Prevents various troubles (board cracking, board thin film, electronic component damage) due to the warp on the printed circuit board, and holds and conveys even when the printed board size is the same and the board thickness changes. It is possible.

[0007]

Embodiments will be described below with reference to the drawings. FIG. 1 is a configuration diagram for explaining an embodiment of a printed circuit board holding and conveying apparatus according to the present invention. In the figure, 1 is a motor, 2 is a gear, 3 is a chain, and 4 is a lower surface holding basic claw (basic). (Holding member), 5 is an upper surface holding claw (opening / closing type holding member), 6 is a fulcrum shaft, 7 is a spring, 8 is an opening / closing guide bar, 9a to 9c are electronic components, and 10 is a printed circuit board.

The printed circuit board 10 is
Is held and held on the lower surface holding basic claw 4, and the upper surface of the printed circuit board 10 has a fulcrum shaft 6 of the upper surface holding claw 5 and a spring 7 that is wound around the fulcrum shaft and acts on the upper surface holding claw 5. It is pressed by the opening and closing action. The lower surface holding basic claw 4 is fixed to the chain 3, and the printed circuit board 10 is conveyed via the gear 2 and the chain 3 using the motor 1. That is, when the printed circuit board 10 is transferred from the carrierless belt conveyor in the previous step to the carrierless automatic soldering device, the holding substrate claws 4 of the carrierless automatic soldering device move in an arc shape,
The upper surface holding claw 5 opens following the open / close guide bar 8 to prepare for receiving the printed circuit board 10. Next, when the receiving is completed, the opening / closing guide bar 8 is disengaged from the upper surface holding claw 5, and the upper surface holding claw 5 presses and fixes the upper surface of the printed circuit board 10. While moving, the lower surface holding substrate claw 4 simultaneously holds the lower surface of the printed circuit board 10 and laterally guides it.

FIGS. 2A to 2D are views showing a holding mechanism of a printed circuit board holding and conveying apparatus according to the present invention. FIG. 2A is a normal state, and FIG. , (C) shows the set state of the printed circuit board, and (d) shows the held state of the printed circuit board. In FIG. 3A, a groove portion is provided in the tip portion 4a of the lower surface holding basic claw 4 of the printed circuit board so that the tip portion 5a of the upper surface holding claw 5 of the printed circuit board is received. The upper surface holding claw 5 is fixed on the lower surface holding basic claw 4 via a fulcrum shaft 6 and a spring 7 that is wound around the fulcrum shaft 6 and acts on the upper surface holding claw 5. With the fulcrum shaft 6 of the upper surface holding claw 5 as the center of rotation, the upper surface holding claw 5 is closed by the spring pressure of the spring, and the tip portion 5a of the upper surface holding claw 5 and the tip portion 4a of the lower surface holding basic claw 4 are Are sandwiched and closed.

In FIG. 1B, by pushing down the opening / closing guide bar 8 of the upper surface holding claw 5 and pushing the end of the upper surface holding claw 5a opposite to the tip 5a, the upper surface holding claw 5 becomes a fulcrum shaft. 6 is rotated about 6 as a center of rotation to perform the opening operation, and the tip portion 5a of the upper surface holding claw 5 and the tip portion 4 of the lower surface holding substrate claw 4
It will open apart from a. In FIG. 3C, the end portion of the printed circuit board 10 is set on the tip portion 4a of the lower surface holding basic claw 4 in the open space of the tip portions 5a and 4a. In FIG. 3D, when the opening / closing guide bar 8 of the upper surface holding claw 5 is pushed up, the upper surface holding claw 5 rotates about the fulcrum shaft 6 as a center of rotation, and the tip portion 5a of the upper surface holding claw 5 moves to the lower surface. The end portion of the printed circuit board 10 placed on the tip portion 4a of the holding basic claw 4 is pressed and held.

As described above, the upper surface holding claws 5 of the printed circuit board 10 and the lower surface holding basic claws 4 are dedicated and separated and fixed, and the upper surface holding claws 5 are opened and closed to make any plate. It can be seen that this is applicable to thick printed circuit boards. FIG. 3 is a top view of the printed circuit board holding / conveying device according to the present invention, showing a state of carrying the printed circuit board.

[0012]

As is apparent from the above description, the present invention has the following effects. In other words, prevent various troubles (board crack / board drop / part damage / others) due to the warp on the board that occurs when the printed board is automatically transferred from the previous carrierless conveyor to the carrierless automatic soldering device, By using openable claws, if the boards of the same size are used, the production can be performed without changing the conveyance width of the printed boards of the automatic soldering device even if the thickness of the printed boards changes.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of a printed circuit board holding and conveying apparatus according to the present invention.

2 is a view showing a holding mechanism of the printed circuit board in FIG.

FIG. 3 is a diagram showing how the printed circuit board holding and conveying device according to the present invention conveys.

FIG. 4 is a configuration diagram of a conventional printed circuit board holding and conveying device.

5 is an enlarged view of a printed board holding mechanism in FIG. 4. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Motor, 2 ... Gear, 3 ... Chain, 4 ... Lower surface holding basic claw (basic holding member), 5 ... Upper surface holding claw (opening / closing type holding member), 6 ... Support shaft, 7 ... Spring, 8 ... Opening / closing Guide bars, 9a to 9c ... Electronic components, 10 ... Printed circuit boards.

Claims (2)

[Claims] 1. A method for holding and carrying a printed circuit board in a carrierless automatic soldering device, wherein: a first holding means for holding a lower surface of the printed circuit board and laterally guiding the printed circuit board; and the first holding means. A separate holding means for holding the upper surface of the printed circuit board by an opening / closing operation, and when mounting the printed circuit board, the second holding means separates from the first holding means by the opening operation of the second holding means. A method for holding and carrying the printed circuit board, wherein the printed circuit board is held and carried by the closing operation of the second holding means after the printed circuit board is mounted. 2. A printed circuit board holding and conveying device in a carrierless automatic soldering device, and a basic holding member which holds a lower surface of the printed circuit board and guides in a lateral direction,
An opening / closing type holding member which is provided separately from the basic holding member and has an opening / closing means for holding the upper surface of the printed circuit board, and an opening / closing member for performing an opening / closing operation of the opening / closing type holding member. A printed circuit board holding and transporting device.