JP2936652B2 - Thin plate positioning detection device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a thin plate positioning detection device.

2. Description of the Related Art When positioning a thin plate such as a printed wiring board, there has been a method of positioning with reference to two orthogonal end faces of the thin plate. However, in this method, dimensional accuracy and right angle accuracy of the outer shape of the thin plate are required, and coarse positioning is performed.

Therefore, since it is necessary to perform accurate positioning, first, provisional positioning is performed by the above-described method, and in that state, a positioning pin is inserted into a positioning hole previously accurately formed in the thin plate to perform highly accurate positioning of the thin plate.

Problems to be Solved by the Invention However, in this method, when the temporary positioning based on the end face is insufficient, when the diameter of the positioning hole of the thin plate is smaller than the diameter of the pin, or when the pitch of the positioning hole of the thin plate is small. Is different from the pitch of the locating pins, if the distance from the end face of the thin plate to the hole is less than the required accuracy, etc., the positioning may not be accurate, and whether the positioning was performed correctly There has been a demand for a device for detecting the pressure.

An object of the present invention is to provide a thin plate positioning detection device that detects whether or not the above-described positioning has been performed accurately.

Means for Solving the Problems In order to solve this problem, the present invention provides at least a pair of detection devices on a table, and each of these detection devices is fixed on the table, and inserted into a positioning hole of the thin plate to remove the thin plate. A positioning pin for positioning, a thin plate detection pin provided movably in a vertical direction on a table corresponding to an end of the thin plate positioned by the positioning pin, and a thin plate detection pin provided corresponding to an upper portion of the thin plate detection pin A first detector, a pin detection pin provided movably in a vertical direction on a table corresponding to the positioning pin, a second detector provided corresponding to an upper portion of the pin detection pin, And a position detecting means for detecting the position of the thin plate based on the output of the second detector and the detection output from the first detector. The corresponding table portion is a space in which the lower end of the thin plate detection pin can protrude below the upper surface of the table.

As described above, the thin plate positioning detection device of the present invention inserts the respective positioning pins of at least one pair of detection devices provided on the table portion into the positioning holes of the thin plate, positions the thin plate, and then detects the thin plate detection pin and the pin. The pin is pressed against the thin plate and the positioning pin, and the height of the upper part of the thin plate detection pin is detected by the first detector to determine the presence or absence of the positioned thin plate.
Further, by detecting the height of the upper part of the pin detection pin by the second detector, it is determined whether or not the positioning pin is in the positioning hole of the thin plate. This makes it possible to detect whether or not the thin plate has been accurately positioned.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of a thin plate positioning detecting device according to the present invention. Usually, when positioning a thin plate by inserting positioning pins into positioning holes, two or more pairs of positioning holes and positioning pins are required. As shown in FIG. 1, the apparatus according to the present invention includes two sets of detection units 17 as detection apparatuses for detecting whether or not a positioning pin is inserted into a positioning hole of a thin plate.

FIG. 2 is a sectional view showing details of the detection block. In FIG. 2, a positioning pin 1 is fixed to a table 2 for positioning a thin plate 14. The detection pin 3 and the detection pin 4 are attached to the detection block 5 so as to be slidable in the vertical direction in the drawing, and a force is always applied downward by the compression springs 6 and 7 in the drawing. The detection block 5 also serves as a detection plate for detecting the height of the thin plate 14 near the positioning hole,
It can be moved up and down in the drawing. Reference numerals 8 and 9 denote detection pins 3 and 4 which do not come off. The detection pin 3 is coaxial with the positioning pin 1 and functions as a pin detection pin. The detection pin 4 is a thin plate detection pin. Reference numerals 10 and 11 denote contact points of a touch switch provided on the detection block 5, and they are compression springs 12 and 13, respectively.
The force is always applied in the downward direction. 14 is a positioned thin plate.

The operation of the thus configured positioning detecting device will be described below.

The detection block 5 is pressed down against the positioned thin plate 14. At this time, the positioning pin 1 is inserted into the positioning hole of the thin plate 14.
Is inserted, as shown in FIG.
And all of the contacts 10 and 11 of the touch switch are closed. If the thin plate 14 is not provided, the contact pin 10 of the touch switch is closed because the detection pin 4 descends below the upper surface of the table 2 due to the space provided in the table 2 as shown in FIG. 11 remains open.
If the positioning pin 1 is not correctly inserted into the hole of the thin plate 14, the positioning pin 1 does not push the detection pin 3 into the detection block 5, and as shown in FIG. Stays open. 2
By taking the logical OR of the tack switches,
It is possible to detect whether or not the positioning pin 1 has been inserted into the fourteen positioning holes.

FIG. 6 shows a second embodiment in which photoelectric detectors 15 and 16 are used as detectors for detecting the upper portions of the detection pins 3 and 4 instead of touch switches.

Effect of the Invention As described above, the present invention provides at least a pair of detection devices on the table portion, each of these detection devices is fixed on the table, and positioning for positioning the thin plate by inserting it into the positioning hole of the thin plate, A thin plate detection pin provided movably in a vertical direction on a table corresponding to an end of the thin plate positioned by the positioning pin, and a first detector provided corresponding to an upper portion of the thin plate detection pin, A detection pin provided movably in a vertical direction on a table corresponding to the positioning pin, a second detector provided corresponding to an upper portion of the pin detection pin, a second detector, and the first detector; Positioning detection means for detecting the positioning of the thin plate based on the detection output from the detector, and a table portion corresponding to the lower end of the thin plate detection pin is provided with the thin plate detection pin. Since the lower end of the plate is a space that can enter below the upper surface of the table, it is possible to realize an excellent thin plate positioning detection device that can detect whether or not the thin plate has been accurately positioned. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a positioning detection apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing details of the apparatus, and FIG. 3 is a cross-sectional view showing a state when positioning is accurately performed. , Fourth
FIG. 5 is a cross-sectional view showing the state of the positioning detection device when there is no thin plate. FIG. 5 is a cross-sectional view showing the state of the positioning detection device when the positioning pins do not enter the positioning holes of the thin plate. The figure is a sectional view showing details of the second embodiment. 1 positioning pin, 2 table, 3 detection pin, 4 detection pin, 5 detection block, 6, 7 compression spring, 10 contact of touch switch, 11 touch switch Contact points, 12,13 ... compression spring, 14 ... thin plate, 15 ...
... Phototube, 16 ... Phototube.

Claims (1)

(57) [Claims] At least a pair of detecting devices are provided on a table portion, and each of these detecting devices is fixed on the table and is inserted into a positioning hole of the thin plate to position the thin plate. A thin plate detection pin provided movably in the vertical direction on a table corresponding to the end of the thin plate, a first detector provided above the thin plate detection pin, and a positioning pin A pin detection pin provided movably in the vertical direction on a table to be moved, a second detector provided corresponding to an upper portion of the pin detection pin,
And a position detecting means for performing position detection of the thin plate by the detector of the and the detection output from the first detector,
A thin plate positioning / detecting device, wherein a table portion corresponding to a lower end of the thin plate detection pin is a space in which a lower end of the thin plate detection pin can protrude below an upper surface of the table.