JPS6345036Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a printed wiring board transfer device.

[Conventional technology and problems]

Holding bodies that sandwich and support the side edges of a printed wiring board (abbreviated as a board) are provided at appropriate intervals on the endless body facing each other on both sides, and between the holding parts formed at the bottom of the left and right opposing holding bodies. A device that clamps and supports the left and right sides of a board and transfers electronic components to the board by sequentially passing through, for example, a fluxer, a preheater, a jet soldering bath, etc. necessary for soldering, is as follows. For example, it has been proposed in Japanese Utility Model Publication No. 1875-1975.

The clamping body used in this device is entirely composed of a metal spring, and this clamping body can be used for the above-mentioned fluxer, preheater, jet soldering bath, etc.
Because it is constantly exposed to a high temperature atmosphere of approximately 280℃,
The inherent elasticity of the clamping body becomes brittle due to this high heat, and when used for a short period of time, its ability to clamp and support substrates decreases, making it uneconomical that the clamping body must be replaced with a new one. In addition, it requires a lot of time and effort to warp and remove the clamping body from the endless body and replace it with a new one, and there are many other problems, such as reducing the operating time of the device. . Furthermore, as in this prior art, the metal springs constituting the clamping body have a limited range in which they can accommodate changes in the width of the substrate. There were some inconveniences in my work that I had to make full use of. FIG. 1 shows the main parts of the prior art, where 1 is an endless body, 2 is a clamping body, and 3 is an endless body operating mechanism.

In order to solve this problem, in the past, the clamping body was formed of a rigid body with no elasticity, and the substrate clamping part formed at the bottom of the clamping body was movable in a direction perpendicular to the transport direction of the endless body. In addition to this, many devices have been proposed in which the substrate holding portion has a spring return behavior. However, in such a configuration, since the substrate holding part moves in a direction perpendicular to the conveyance direction of the endless body against the elasticity of the spring, and because the board holding part has a claw structure, both edges of the board are moved. When holding the board in the board holding part, there is a problem that the end face of the board comes into contact with the board holding part and it is not possible to hold it smoothly. Also, due to changes in the board width, one end of the endless body cannot be held by the handle operation. The problem of having to adjust movement has not yet been solved.

[Means that the invention attempts to solve]

The structure of the present invention, which solves the problems of the prior art, is that clamping bodies for clamping and supporting the side edges of the printed wiring board are provided at appropriate intervals on the endless body opposite to each other on both sides, and the clamping bodies are made of elastic material. The board holding part formed at the lower part of the holding body is movable in a direction orthogonal to the conveyance direction of the endless body, and the board holding part is given a return behavior due to spring properties. In a printed wiring board transfer device,
A shaft rod 3 is attached to the bottom of the attachment 32 of the endless body.
3 is vertically provided, and one end of a horizontal clamping body 34 is rotatably attached to the lower end of this shaft rod 33, and one end of the horizontal clamping body 34 is fixed to the shaft rod 33, and a winding The other end of the rotated spiral spring 35 is fixed, and furthermore, a shaft rod 37 having a V-grooved roller 36 horizontally provided at the lower end is vertically provided at the outer end of the holding body 34. .

〔Example〕

With reference to FIG. 2, details of the embodiment of the present invention will be explained.

Reference numeral 31 denotes a conveyance chain, and a shaft rod 33 is vertically disposed at the bottom of an attachment 32 provided on the conveyance chain 31, and one end of a horizontal clamping body 34 is rotatably attached to the lower end of the shaft rod 33. Horizontal holding body 34
One end of the spiral spring 35 is fixed to the shaft rod 33, and the other end of the spiral spring 35 wound around the shaft rod 33 is fixed, and the horizontal clamping body 34 is attached to the shaft rod 33.
is configured so that it can be rotated back within a certain angle range, and a V is provided at the outer end of the horizontal holding body 34 and the lower end
A shaft rod 37 on which a grooved roller 36 is installed horizontally is provided vertically. According to this device, by applying both side edges of the substrate between both opposing V-grooved rollers 36 and pushing them from the front, the horizontal clamping body 34 moves the substrate 17 using the V-grooved rollers 36 as a guiding medium.
It can be rotated according to the width of the board to hold the board.

[Effect of idea]

Since the present invention is configured as described above, the following effects can be obtained.

(a) The printed wiring board is transported while being held between the holding parts of opposing holding bodies provided on both endless bodies, and the board is soldered by passing through a fluxer, a preheater, and a jet soldering bath in this order. In addition to being automatic and continuous, the clamping body is formed of a rigid body without elasticity, and the clamping part of the substrate formed at the bottom of the clamping body is movable in a direction perpendicular to the conveying direction of the endless body. Since this substrate holding part is given a return behavior due to spring properties, the movement range of the board holding part can be adjusted to a significantly greater extent than when the entire holding body is made of an elastic material. The adjustment other than the interval adjustment can be done by adjusting the movement of the board holding part.
Being placed in a high temperature atmosphere will not cause the elasticity of the clamping body to become brittle and shorten its service life, and it is of course highly economical as it is sufficient to simply replace the spring. b) The edge of the intervening printed wiring board comes into contact with the V-grooved roller, and the horizontal clamping body is rotated against the spiral spring through the shaft rod, and by the rotational action of the V-grooved roller. Both side edges of the printed wiring board are smoothly guided and held in the V-groove. Therefore, unlike the prior art, the edge of the intervening printed circuit board does not come into contact with the clamping body and cannot be clamped, or the clamping body is not damaged. It has excellent features such as no complicated adjustment and the ability to freely hold and transport printed wiring boards of different widths.

[Brief explanation of the drawing]

FIG. 1 is a front view of the main parts of a conventional device, and FIG. 2 is a perspective view of the main parts of the device of the present invention. 31... Conveyance chain, 32... Attachment, 33... Axial rod, 34... Horizontal clamping body, 35...
...Spiral spring, 36...V-grooved roller (substrate holding part), 37... Axis rod.

Claims (1)

[Claims for Utility Model Registration] Holding bodies for pinching and supporting the side edges of the printed wiring board are provided at appropriate intervals on the endless bodies arranged oppositely on both sides,
The holding body is formed of a rigid body with no elasticity, and a substrate holding part formed at the bottom of the holding body is movable in a direction perpendicular to the conveying direction of the endless body. In a printed wiring board transfer device that has a spring return behavior, a shaft rod 33 is vertically disposed at the bottom of the endless attachment 32, and one end of a horizontal holding body 34 is rotated at the lower end of the shaft rod 33. At the same time, one end is fixed to the shaft rod 33 and the other end of the wound spiral spring 35 is fixed to the horizontal clamping body 34, and further, on the outer end of the clamping body 34, A printed wiring board transfer device characterized by having a shaft rod 37 vertically provided with a V-grooved roller 36 horizontally at its lower end.