JPS616894A - Method of positioning disk of thin plate shape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to automatic machines in general, such as automatic assembly machines and electronic component insertion machines, which generally handle thin discs such as circular printed circuit boards used in precision motors. The present invention relates to a positioning method in a workpiece conveyance section.

Conventional structure and its problems The method of positioning the disk described above in general automatic machines that use thin disk-like workpieces is to provide a plurality of holes on the disk that serve as references, and use the holes as references. The so-called hole reference method, in which the pin t' is fully inserted and positioned, or the motherboard method, in which a disk 14 called a motherboard is used and the play 14 is positioned relative to each other, has been used.

However, the hole reference method requires the creation of functionally unnecessary holes in the workpiece, which is costly, and depending on the workpiece, it may be difficult to create such holes, which limits the design of the workpiece. It also served as a means of giving. The motherboard method clearly had drawbacks such as significantly higher costs.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned problems, and aims to enable positioning by simply providing a straight portion on the outer periphery of a thin disc.

Structure of the Invention In order to achieve the above object, the method for positioning a thin disk according to the present invention involves transporting a thin disk having one or more linear portions on the outer circumference to a predetermined position. Then, one surface of the straight part is used as a reference surface, the reference surface of the disk is applied to a stopper provided with a flat surface as a reference, and an arbitrary point on the other outer periphery located on the opposite side of the reference surface with respect to the center of the circle is A method of positioning a thin disc by fully biasing the disc in the direction of the reference plane using two cylinders at two points, thereby keeping the disc in a predetermined position and keeping the direction of the reference plane constant. However, unnecessary holes,
There is no need to provide a motherboard, and the thin disc can be positioned at low cost and with accurate reproducibility.

DESCRIPTION OF EMBODIMENTS An embodiment of the method of the present invention will be described below with reference to FIGS. 1 to 21. Set the two rails 1 at an IJ that does not allow the disc 2 to rotate completely, move the two belts, and then
A stylus conveyor in the direction of arrow A and provided with a reference surface 8.
In step 4, two cylinders 6 positioned below the top surface of the belt 2 for feeding the reference plane 9 of the disc are fixed upward together with a block 6 in which the two cylinders 5 are all relatively fixed. That is, by raising it in the direction of arrow B and then moving it horizontally in the direction of arrow C to urge the disk 2 against the stopper 4,
The center of the disk 2 can be located on the perpendicular bisector of the line segment connecting the centers of the two cylinders 6.

Furthermore, since the block 6 has a structure in which it is deflected in the direction opposite to the direction of the arrow C via the spring 7, it also has the advantage of being able to cope with large variations in the disc 20. .

Effects of the Invention As described above, according to the method of the present invention, there is no need to provide a hole as in the conventional hole reference method, there is no need to provide a motherboard as in the motherboard method, and the process can be performed with accurate reproducibility. It is capable of positioning thin discs, which increases the degree of freedom in designing both automatic machines and workpieces, and reduces costs.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the positioning process of an embodiment of the misfire, and FIG. 2 is a front view of the same. 2 ・Thin disc, 4...stopper, 5
... Two cylinders, 8 ... A plane that serves as a reference provided on the stopper, 9 ... A reference surface of a disc. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A thin disc having one or more straight parts on the outer circumference is transported to a predetermined position, one face of the straight part is used as a reference plane, and the circular plate is placed on a stopper provided with a plane serving as a reference. By applying the reference surface of the plate and urging the disk in the direction of the reference surface with two cylinders at any two points on the other outer circumference located on the opposite side of the reference surface with respect to the center of the circle. A method for positioning a thin disc, in which the disc is positioned at a predetermined position with the direction of the reference plane constant.