JPH0217794Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention can automatically position and fix a workpiece or workpiece when it is automatically carried in and out of a predetermined working position in an automatic cutting machine or automatic measuring device. It is related to the device.

[Conventional technology]

A conventional device of this kind is a device as shown in FIGS. 1 to 3, in which a plate material 2, which is a plate-shaped workpiece or workpiece whose two sides form a positioning angle, is moved by a carrier 4. It is carried to a predetermined working position, and positioned and fixed using a positioning tool 3 and a clamp 6, which have two sides that come into contact with two side surfaces of the plate material 2. However, in such a structure, the plate material 2
When attempting to position and fix the plate material 2 to the positioning tool 3 using the clamp 6, the plate material 2 is carried to a predetermined working position by the carrier 4, but due to variations in the dimensions of the plate material 2, repeatability of the carrier 4, etc. As the position of the clamp 6 and the positioning tool 3 changes, the relative positions of the clamp 6 and the positioning tool 3 change. For example, as shown in FIG. 3, at a position near the longer contact side of the positioning tool 3,
When the plate material 2 is carried in, the side surface of the plate material 2 hits the contact side first, and the frictional resistance acting there increases rapidly, making it impossible to move the plate material 2 to the other contact side using only the clamp 6. Positioning tool 3
There was a drawback that a gap x appeared between the two. If this gap x occurs, it is difficult to apply it to automatic cutting machines or automatic measuring instruments. In other words, machining accuracy may not be achieved or the probe may not be able to be applied.

[Problem that the invention attempts to solve]

This invention was devised to eliminate this drawback, and provides a positioning and fixing device for fixing the plate material 2 in contact with the positioning tool 3 so that the above-mentioned gap x does not occur.

[Means for solving problems]

To achieve this purpose, a gas blowing nozzle 5 is provided near the clamp 6, and compressed gas is sent from the nozzle 5 toward the top and side surfaces of the workpiece 2 (hereinafter referred to as the plate material) to position the plate material 2. The purpose is to ensure that the tool 3 is brought into contact with the contact side of the tool 3 and held in position.

〔Example〕

Next, this invention will be specifically explained with reference to the embodiment shown in the drawings.

The first embodiment is shown in FIGS. 4 to 7, and the carrier 4 shown in FIGS.
The plate 2, whose two sides form a positioning angle, is brought into a predetermined working position (indicated by dashed lines in FIG. 6) and removed from the predetermined working position. The positioning tool 3 shown in FIGS. 4 to 6 is provided on the base 1 and has contact sides 3a and 3b that abut on two side surfaces of the plate material 2, and the two side surfaces forming a positioning angle of the plate material 2. The positioning is performed by the contact between the contact sides 3a and 3b. The clamp 6 is provided on the base 1 and has a cam structure, and as the cam rotates, the sliding surface of the cam comes into contact with the side surface of the plate material 2 and presses against the positioning tool 3, thereby fixing the plate material 2. As shown in FIG. 6, the position where the compressed gas flows toward the contact sides 3a and 3b of the positioning tool 3 with the plate material 2, and the diameter approximately equal to the thickness t of the plate material 2 as shown in FIG. A nozzle 5 is provided on the upper surface 2a of the plate 2 at a position where compressed gas (hereinafter referred to as compressed air) flows.

Next, the operation of the embodiment will be explained. The plate 2 carried by the carrier 4 is placed at a predetermined working position on the base 1. Then, when gas (hereinafter referred to as air) is sent out from the nozzle 5, the plate material 2 is moved to the contact side 3 of the positioning tool 3 by the pressure and flow of the air.
After the two side surfaces of the plate 2 are brought into contact with a and 3b, the plate 2 is positioned and fixed by the clamp 6. The air blown from the nozzle 5 flows away on the upper surface of the plate 2, but at this time, a force that slightly floats the plate 2 acts, which is convenient for pressing the plate 2 toward the positioning tool 3. The two side surfaces of the plate material 2 are pressed by the gas blown out from the nozzle and brought into contact with the contact sides 3a, 3b of the positioning tool by the force of the gas, and fixed by a clamping device having a cam. .

The inner diameter of this nozzle is approximately equal to the thickness of the plate material 2, and this is determined in relation to the flow rate and velocity of air. If the inner diameter is made too large, the light plate material 2 may be blown away, or the positioning cannot be performed efficiently. Moreover, the blowing angle is as shown in FIG. 6, and the two side surfaces 3a,
The direction of the nozzle 5 is adjusted so that the force vector acts almost equally on the nozzle 3b. Next, as the cam rotates, its sliding surface comes into contact with the plate material 2, and the plate material 2 is pressed and fixed to the contact sides 3a, 3b of the positioning tool 3.

Thereafter, a probe is brought into contact with an electrode (not shown) provided at a predetermined position on the plate 2 to measure the characteristics of the plate 2. The plate material in question here is a plate material that is formed by two sides that intersect with each other and has a positioning angle, and since these two sides are supported in contact with the contact sides of the positioning tool, it is rectangular, 5 Square, 8
A square shape or the like may also be used. Further, as long as the plate material has two sides forming the positioning angle, the shape of the other sides does not matter. Further, as shown in FIGS. 8 and 9 as a second embodiment, the positional relationship between the nozzle 5 and the clamp 6 may be such that the nozzle 5 is placed above the clamp 6.

[Effect of idea]

In this idea, the nozzle 5 is placed on the side of the plate 2,
The diameter of the air outlet 7 is made almost equal to the thickness of the plate material 2, and air is blown from the nozzle 5 toward the plate material 2 so that the air flows over the top surface of the plate material 2, so that a force that slightly floats the plate material 2 is applied. It has the effect of
Therefore, the positioning angle of the plate material 2 can be brought into contact with the contact sides 3a, 3b of the positioning tool 3, and the plate material 2 can be positioned and fixed without any gaps. Further, since the nozzle 5 is added and air is used, the structure is simple and can be implemented at low cost. In the embodiment, a case where the predetermined angle is 90 degrees is illustrated, but this angle is not limited to 90 degrees.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main part of the device to explain the conventional technology, Fig. 2 is a plan view of the main part of the device to explain the conventional technology, and Fig. 3 is a plan view of the main part of the device to explain the conventional technology. 4 is a plan view of the first embodiment of the present invention, FIG. 5 is a front view of the first embodiment, FIG. 6 is a detailed view of the first embodiment, and FIG. 7 is a plan view of the first embodiment. 8 shows a detailed view of the second embodiment, and FIG. 9 shows a side view of FIG. 8. 1 in the figure is the base, 2, 21, 22 are the workpieces,
3 is a positioning tool, 4 is a carrier, 5 is a nozzle, 6
7 indicates a clamp, and 7 indicates an air outlet.

Claims (1)

[Claims for Utility Model Registration] (1) A workpiece in an automatic machine that automatically carries a plate-shaped workpiece whose two sides form a positioning angle into a predetermined working position in the same direction and automatically carries it out after work. An automatic positioning and fixing device for: Base 1
and; a positioning tool 3 provided on the base for positioning the workpiece at a predetermined working position by coming into contact with the two sides of the workpiece; and positioning the workpiece near the predetermined work position. Carrier 4 for automatic loading and unloading after work
and; a nozzle 5 for blowing gas onto the top and side surfaces of the workpiece brought into the vicinity of the predetermined working position to bring the two side surfaces into contact with the positioning tool; and a nozzle 5 provided on the base; and a clamp 6 that presses and fixes the workpiece to the positioning tool 3 by causing its sliding surface to come into contact with the side surface of the workpiece as the cam rotates. Device. (2) The automatic positioning and fixing device according to claim 1, wherein the nozzle 5 has an outlet having a diameter substantially equal to the thickness of the workpiece.