JPH0438542Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for holding opposing edges of a plate.

[Prior Art] In the manufacturing process of printed wiring boards, when testing a circuit formed on a board using a probe unit c equipped with probe pins d as shown in FIG. The opposite edges of the substrate were held using a substrate holding device shown in .

That is, Fig. 3a shows a rod-shaped support frame 1 with an L-shaped cross section arranged parallel and symmetrically, and the opposing edges b of the plate a placed on the opposing receiving grooves 2 for support. .

In addition, in FIG. 1b, channel-shaped support frames 1 having concave receiving grooves 2 are arranged parallel to each other, with the receiving grooves 3 facing each other, and both opposing edges b of the plate body a are placed in the receiving grooves 2. It is inserted and held.

[Problems to be solved by the invention] In the former holding device shown in FIG. 3a, the receiving groove 2
is open upward, so plate a is supported by support frame 1
Since it can be supplied from above and removed from above, it is easy to attach and remove plate body a. However, on the other hand, it can only receive the load applied from above to the plate a, and cannot take the reaction force against the load applied from below. For this reason, probe unit c can be applied only from above. For example, when inspecting both sides of a printed wiring board, the board can be turned over and probe unit c can be applied to it.
must be guessed.

On the other hand, in the latter holding device shown in FIG. 3b, the jaws 2a located above and below the receiving groove 2 can absorb reaction force against external forces from both the upper and lower sides, so that the probe unit can be held against the printed wiring board. c can be applied from above and below, and both sides of the board can be inspected simultaneously or consecutively without reversing the board. However, on the other hand, it is difficult and time-consuming to attach and detach the plate because the opposing edges b of the plate a must be inserted into the narrow receiving groove b and then removed by pulling it out from there.

The object of the present invention is to solve the above-mentioned problems in the plate holding device all at once.

[Means for solving the problem] Citing the symbols shown in Figures 1 and 2,
To explain the structure of the present invention, the plate holding device of the present invention has at least a pair of rotating holding shafts 11 arranged in parallel, and along the longitudinal direction of the holding shafts 11,
The receiving grooves 12 for receiving the edge b of the plate body a are formed symmetrically, and the holding shafts 11 are rotated simultaneously and symmetrically.

[Function] When attaching the plate a to this holding device, first, as shown in FIG. By simply placing the plate a so as to straddle the support shaft 11, both edges b thereof can be supported by the receiving grooves 12. In this state, the force applied from above to the plate body a can be received.

Furthermore, from the state shown in Fig. 2 a or b, the holding shaft 1
1 so that the receiving grooves 12 face each other. In this state, the edge b of the plate a is held by the upper and lower surfaces of the receiving groove 12, so that the force applied to the plate can be received from both above and below.

Furthermore, when removing the plate a from the holding shaft 11, it is also possible to return the holding shaft 11 to the original position shown in FIG. 3a and remove it from above. It is also possible to rotate the plate body a to eject the plate body a downward.

[Example] Next, an example of the present invention will be described with reference to FIGS. 1 and 2.

One end of the holding shaft 11 is rotatably supported by a bearing 13, and a pair of holding shafts 11 are arranged in parallel. Along the longitudinal direction of these holding shafts 11, from the central axis
A V-shaped receiving groove 12 opened at an angle of 90° is formed,
The holding shafts 11 on both sides, including this receiving groove 12, are completely symmetrical.

The holding shaft 11 does not necessarily have to have a basically circular cross section as shown in the figure, and at least the tip end side that holds the plate a may have a V-shaped or concave cross-section. can. Also, receiving groove 1
The shape of the plate 2 is not limited to the V-shape, but may be any suitable shape such as a concave shape or a U-shape depending on the shape of the edge b of the plate body a to be held. In addition, when the receiving groove 12 is formed in a V shape, its opening angle is
A suitable angle is around 90°, but any suitable angle can be selected within the range of 30° to 150°.

A small motor 16 is connected to each of the two holding shafts 11 via gears 14 and 15, and under the control of a limit switch 17, both holding shafts 11 rotate simultaneously and symmetrically within a certain angle range.
The means for rotating the holding shafts 11 may be an actuator or a solenoid in addition to a motor.Also, instead of connecting a motor or the like to each of the two holding shafts 11, it is possible to connect only one of them and connect a gear or sprocket to the other. It may also be used to transmit in the opposite direction with a rotation ratio of 1:1.

When placing the plate a on the holding shaft 11 from above, the second
As shown in Figure a, it is preferable to place the receiving groove 12 in an upward position. In this state, the distance W between the opposing wall surfaces of the receiving groove 12 becomes maximum, and the plate body a having the width w can be placed thereon with a margin. Next, holding shaft 1
1 inward and hold the plate body a in the state shown in the figure b or c. Of course, when applying force to plate body a from both the top and bottom, the receiving grooves 12 on both sides are completely opposed to each other as shown in Fig. 3c, and the receiving grooves 12
force must be received from above and below on both walls.

In the embodiment described above, only one set of holding shafts 11 is provided facing each other so as to hold only one set of opposing edges of the plate body a. On the other hand, the holding shaft 11
Naturally, it is possible to provide another set of holding shafts 11 orthogonal to the holding shafts 11.

[Effects of the invention] As explained above, according to the present invention, a plate holding device is obtained in which it is easy to attach and remove the plate a, and in addition, it is possible to receive force from above and below, and it is possible to obtain a plate holding device that is capable of receiving force from above and below. problems can be solved at once.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Figs. 2 a to c are front views of main parts showing the operation of the holding shaft of the same embodiment, and Figs. 3 a and b are main parts showing a conventional holding device. FIG. 11... Holding shaft, 12... Receiving groove, a... Plate body,
b...Edge of the plate.

Claims (1)

[Scope of utility model registration request] In a device for holding opposing edges b of a plate a, at least a pair of rotating holding shafts 11 are arranged in parallel, and the edge b of the plate a is held along the longitudinal direction of the holding shafts 11. The receiving groove 12 for receiving is formed symmetrically,
A plate holding device characterized by rotating the holding shafts 11 simultaneously and symmetrically.