JPH037155Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is applicable to positioning devices, especially for printing substrates used in devices that print or coat the surface of sheet-like or thin-plate objects such as glass plates. This invention relates to a positioning device.

(b) Prior art The conventional positioning device of this type was
There is one disclosed in Publication No. 185441.

In this device, a relatively small rectangular upper surface plate, on which the printing material is fixed, is rotatably arranged on a relatively large lower surface plate, and push screws are installed on each of the three sides of the upper surface plate. At the same time, a dial gauge is also installed on one of these three sides, two push screws and two dial gauges are installed on the remaining side of the upper surface plate, and the lower surface plate is equipped with a dial gauge. It is fixed to the base frame at least four places via vertical movement screws.

With this device, the lower surface plate is adjusted to a predetermined height position relative to the base frame by adjusting the vertical movement screw, and the upper surface plate is moved relative to the lower surface plate by adjusting the push screw while watching the scale of the dial gauge. to adjust in the X and Y directions,
Alternatively, by rotating the upper surface plate with respect to the lower surface plate, the printing material placed at a predetermined position on the upper surface plate can be positioned.

(c) Problems to be solved by the invention Although the conventional device described above can achieve positioning accuracy of about 1/10 mm to 5/100 mm, it takes time to adjust the screws, and Since the positioning of objects installed in the upper surface plate is performed indirectly by positioning the upper surface plate relative to the lower surface plate, it is practically impossible to achieve positioning accuracy higher than the above numerical value. Due to the double structure of the surface plate and the lower surface plate, there are problems such as the overall size of the apparatus becomes larger than the size of the printing material.

(d) Means and action for solving the problem The present invention has a single surface plate on which the object to be positioned is placed on the top surface, which is installed on a base so that its vertical position can be varied through a vertical position adjustment mechanism. At least two reference position setting mechanisms are provided at intervals on one side of the surface plate, at least one reference position setting mechanism is provided on an adjacent side, and at least one reference position setting mechanism is provided on each opposite side of the two sides. It is equipped with a width shifting mechanism.

Each of the reference position setting mechanisms is movable into a recess formed on the upper surface of the surface plate extending inwardly from each side edge of the two adjacent sides in a direction orthogonal to each other, and into each of the recesses. It is composed of a pin which is disposed on the surface plate and whose upper end slightly protrudes from the upper surface of the surface plate, and a micrometer connected to this pin.

Further, the width adjustment mechanism includes a recess bored inwardly from each side edge of two sides opposite to the adjacent side in a direction perpendicular to each other on the upper surface of the surface plate; Consisting of a push rod that is arranged to be able to slide forward and backward in the length direction and that has an abutment piece fixed to the tip on the inner side of the recess, and a drive mechanism that slides the push rod forward and backward. and when the push rod is moved in the inward direction of the surface plate within each of the recesses, the abutment piece projects upward from the upper surface of the surface plate, and the push rod moves outward of the surface plate. The abutment piece is configured to sink into each recess below the upper surface of the surface plate when moved in the exit direction.

(e) Examples Hereinafter, illustrated embodiments of the present invention will be described in detail.

1 is a rectangular single surface plate; 2 is an object to be placed on the surface plate 1 and positioned; for example, a thin glass plate whose upper surface is to be printed or coated (hereinafter simply referred to as a workpiece); 3 is a base; The surface plate 1 is supported so as to be vertically adjustable via a support mechanism 4 at the center and vertical position adjustment mechanisms 5 at the four corners.

The support mechanism 4 includes a support shaft 4a fixed to the center of the upper surface of the base 3, and a boss-like member 4c having a central hole 4b into which the upper end of the support shaft 4a fixed to the center of the lower surface of the surface plate 1 is loosely inserted. is interposed between the stopper 4b at the upper end of the support shaft 4a and the inner end surface of the central hole of the boss-like member 4c, and the surface plate is always held downward (base 3) via the member 4c.
A compression spring 4e biasing the

Each vertical position adjustment mechanism 5 is fixed to the upper end of a bolt 5a fixed on the base 3 and an adjustment nut 5b screwed to the bolt, and is fitted into a corresponding recess 5e bored in the lower surface of the surface plate. the thrust bearing 5c and the lock nut 5 screwed onto the bolt 5a.
Consists of d.

7A, 7B, and 7C are micrometer mechanisms, and 7A and 7B are respectively provided in two recesses 8A and 8B provided at appropriate intervals on one side of the surface plate 1, and a recess 8C provided on the adjacent side. 7C is deployed in relation to each.

Reference pins 9A, 9B, and 9C are reference pins for positioning workpieces, and are disposed in recesses or grooves 8A, 8B, and 8C, respectively, with the upper ends of each pin protruding slightly from the upper surface of the surface plate 1. The pins 9A and 9B are connected to the micrometer mechanisms 7A and 7B, respectively, so that they can move forward and backward in the recesses 8A and 8B in the linear direction (X or Y direction), and the pin 9C moves the direction changing lever 14. Micrometer mechanism 7C through
This makes it possible to advance and retreat within the recess 8C in a direction (Y or X direction) perpendicular to the linear direction. Therefore, by setting the positions of the pins 9A to 9C, the position of the workpiece 2 on the surface plate 1 in the X direction and the Y direction can be determined.

6 is a compression spring fitted into grooves 8A to 8C, respectively, to connect pins 9A to 9C to micrometer mechanisms 7A to 9C.
It is biased towards 7C.

10A and 10B are the above pins 9A and 9B of surface plate 1
and 9C are guide grooves bored perpendicularly to the two sides opposite to the two sides (in the X direction and Y direction, respectively), and 11A and 11B are width adjusting mechanisms installed in relation to the guide grooves 10A and 10B, respectively. It is. Since the width adjustment mechanisms 11A and 11B have the same configuration, they will be explained in common, but in the illustrated example, a push rod 12b with an abutment piece 12a attached to the tip is used.
and a link 12e connecting the drive cylinder 12c, the output rod 12d of the cylinder, and the push rod 12b.
It is fixed to the surface plate 1 by a bracket 13.

The push rod 12b and the contact piece 12a are connected to the guide groove 10.
The push rod 12b and the contact piece 12a are inserted into the drive cylinder 1 so as to be slidable forward and backward.
2c moves forward and backward (to the left and right in FIG. 3) via the link 12e, and in the advanced position it slightly protrudes above the upper surface of the surface plate 1 and in the retreated position it retracts below the upper surface of the surface plate.

In the above configuration, if the workpiece 2 is, for example, a thin glass plate whose upper surface is to be printed or coated, the surface plate 1 is adjusted to a predetermined height by the vertical position adjustment mechanism 5 according to the thickness of the glass plate. Adjust to the correct position.

Next, two reference pins 9A and 9B are placed on the same side of the surface plate by micrometer mechanisms 7A to 7C.
simultaneously or (and) position the reference pins 9C arranged on the adjacent sides in the X direction or (and) the Y direction. Next, position the workpiece 2 with its two adjacent sides corresponding to the reference pins 9A, 9B, and 9C, respectively. Board 1
The driving cylinders 12C of the width adjusting mechanisms 11A and 11B are operated, and the push rods 12b are advanced within the guide mechanisms 10A and 10B, and the abutment pieces 12a are placed on the two sides of the workpiece 2 opposite to the two sides mentioned above. By pressing the workpiece in the X and Y directions (width alignment) and pressing it against the reference pins 9A to 9C, the workpiece is placed in the XY direction position specified by the reference pins on the surface plate. Can be positioned.

By relatively displacing the reference pins 9A and 9B,
By setting different positions in the (or Y) direction, the workpiece 2 can be positioned at an oblique position with respect to the surface plate 1 (with respect to the XY direction).

Although the illustrated embodiments have been described in detail above, the present invention is not limited thereto, and various modifications are possible. For example, it is sufficient that at least two reference position setting mechanisms are provided on one side of the surface plate and at least one on an adjacent side, and the number can be freely selected. In addition, at least one width adjustment mechanism may be provided on each of the two sides opposite to the two sides of the surface plate provided with the reference pins.
The number can be freely selected.

A large number of air intake holes may be provided on the upper surface of the surface plate 1, and a vacuum source may be connected to these holes so that a workpiece may be attracted onto the surface plate. The shape of the surface plate is not limited to square, but may be rectangular or any other suitable shape.

(G) Effects As described above, according to the present invention, the workpiece is directly positioned on the top surface of a single surface plate, so positioning operations can be performed easily and easily even with high precision of about 5/100 mm. In contrast, the area of the surface plate is small, and the device can be made with a low bulk and a simple structure.

In addition, when the width adjustment mechanism is in the exit position, the contact piece does not protrude from the top surface of the surface plate and is recessed into the recess, so the workpiece is placed on the surface plate by sliding it from the side where the width adjustment mechanism is installed onto the top surface of the surface plate. Since it can be placed and removed, the work can be done quickly and easily.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is an elevational view partially shown in cross section, and FIG. 3 is a side view of the width adjusting mechanism. 1...Surface plate, 2...Workpiece, 3...Base, 4...
...Support mechanism, 5...Vertical position adjustment mechanism, 6...Compression spring, 7A to 7C...Micrometer mechanism, 8
A~8C...Recess, 9A~9C...Pin, 10
A, 10B...Guide groove, 11A, 11B...Width adjustment mechanism.

Claims (1)

[Claim for Utility Model Registration] A single rectangular surface plate on which an object to be positioned is placed is installed on a base so that its vertical position can be varied via a vertical position adjustment mechanism, and a space is set on one side of this surface plate. and at least one reference position setting mechanism on one adjacent side, and at least one width adjustment mechanism on each opposite side of the two sides. In the positioning device, each of the reference position setting mechanisms includes a recess formed on the upper surface of the surface plate and extending inward from each side edge of the two adjacent sides in a direction orthogonal to each other, and each of the recesses. A pin movably disposed within the facility and having an upper end slightly protruding from the upper surface of the surface plate, and a micrometer connected to the pin, and the width adjustment mechanism is mounted on the upper surface of the surface plate adjacent to the a recess bored inward from the respective side edges of the two sides opposite to the side opposite to each other in directions orthogonal to each other;
and a push rod having an abutment piece fixed to the inner tip of the recess, and a drive mechanism that slides the push rod forward and backward, and the push rod moves inside each of the recesses through the recesses. When the push rod is moved inward from the surface plate in the direction of entry, the abutment piece projects upward from the top surface of the surface plate, and when the push rod is moved outward from the surface plate in the direction of withdrawal, the abutment piece protrudes upward from the top surface of the surface plate. A positioning device configured to sink into each of the recesses below the upper surface of the surface plate.