JPS59110530A - Sheet holding device - Google Patents

Abstract

PURPOSE:To provide possibility of producing many types of articles each in minor quantity, by permitting a fitting pin installed at a sheet to slide in the vertical direction, holding the sheet by the force of a spring, using the oversurface of this sheet always as reference surface, and thereby providing a constant reference surface regardless of sheet thicknesses. CONSTITUTION:A locating block 12 is coupled with a rotary shaft 9 and slided vertically by a lever 11. This block 12 has a cylinderical pin 24, whose conically formed tip is fitted in a hole H provided in a sheet 1 and whose diameter is larger than that of the hole into which the lower part is fitted, and is coupled with a slide block 14 having a roller 26 held by another pin 25. This block 14 is guided by a guide rod 15 coupled with a guide block 13 and is slidable vertically while pressed resiliently by a spring 27. When a new sheet is fed, the shaft 9 is restituted, and the block 14 is raised by the force of said spring 27, and then the pin 24 heaves the sheet 1 to put it in surface contact with a groove M provided in a fixed rail 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thin plate holding device equipped with a positioning block that holds a reference plane constant on the upper or lower surface of the thin plate even though the thickness of the thin plate is variable.

Structure of the conventional example and its problems As shown in FIGS. 1 and 2, the conventional thin plate holding device is provided with a rotating shaft 3 on a rail 2 having a groove M that supports the edge of the thin plate 1. a positioning lever 6.6 equipped with a pin 4 that fits into a positioning hole H provided in the thin plate 1;
A plurality of these were fixed to the shaft 3. However, due to the change in the thickness of the thin plate 1, the space between the groove width of the rail 2 and the thickness of the thin plate 1 becomes large, making the reference plane unstable and positioning impossible. Because they were attached, even if the external dimensions of the thin plate 1 were the same, if there was a difference in thickness, random production was not possible, and it took time to change over.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks and provides a thin plate holding device that enables high-mix, low-volume production and random production.

Structure of the Invention The present invention provides a pair of parallel rails each having a groove that supports the edge of a thin plate, the distance between the two rails is adjustable, a shaft for rotating the rail is provided, and a positioning shaft provided on the thin plate is provided. The hole that fits into the hole.

A thin plate with a variable thickness is positioned by sliding a plurality of positioning blocks equipped with a rail in the vertical direction by rotating the shaft, with the top or bottom surface facing the groove of the rail, and the reference plane is always kept constant ((series). , high-mix, low-volume production.

Random production is possible.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

In the figure, 7 is a main body base, 8 is a block that is fastened to the main body base 7 and holds a rotation shaft 9 and fastens a fixed rail 1o having a groove M, and 11 is a block that is fastened to the rotation shaft 9 and holds a positioning block 12. A lever 13 that slides up and down moves the positioning block 12 in the direction of the rotation axis 9 (C movement axis 9 direction), and a guide block that clamps and fixes the fixed rail 10. A slide block 14 refers to the positioning block 12. are fastened together and guided by two guide rods 15. Reference numeral 16 is a lever that transmits rotation to the rotation shaft 9, and 17 is a lever that is fastened to the main body base 7 and is guided by two guide rods 15.
8, a moving block to which a grooved moving rail 19 is fastened; 20, a thin plate holding lever fastened to the rotating shaft 18; 21, a lever transmitting rotation to the rotating shaft 18; The springs 22, 23 are connected to the lever 16.
, 21, the lever 11 is always in a fixed position,
The plate retaining lever 20 is secured to said lever 16.21 in such a way as to keep it in place.

To describe the operation of the positioning block 12 in more detail, the positioning block 12 has a pin 24 having a conical tip that fits into a hole H provided in the thin plate 1 and a cylindrical pin 24 that is larger in diameter than the hole that fits in the lower part. It is fastened to the slide block 14 having a row 226 held by a pin 26.

The roller 26 is in contact with a lever 11 fastened to the rotation shaft 9. The slide block 14 is guided by two guide rods 14 fastened to the guide block 13, and is supported by a spring 27 so as to be able to slide up and down.

When the rotating shaft 9 is rotated in the above configuration, the lever 11 is also rotated, and the slide block 14 is lowered via the roller 26, and the positioning block is also lowered, so that the thin plate 1 is released. When a new thin plate is supplied, the rotation shaft 9 returns to its original position and the slide block 14 is raised by the force of the spring 27, and the pin 2
Push up the thin plate 1 with the columnar part at the bottom of 4, and fix the fixed rail 1.
The line 5 side block 14 reaches its upper limit when it comes into contact with the groove M of the groove M.

Effects of the Invention As described above, the present invention allows the mating pin provided on the thin plate to slide in the vertical direction, holds the thin plate with the force of the spring, and always uses the top surface of the thin plate as a reference, so that It is possible to perform high-mix, low-volume production, and random production by changing a certain standard without any need for production.

[Brief explanation of drawings]

FIG. 1 is a plan view of a conventional thin plate holding device, FIG. 2 is a side sectional view of the same main part, FIG. 3 is a plan view of a thin plate holding device in an embodiment of the present invention, and FIG. 4 is a side view of the same, FIG. 6 is a front view of the main part of the positioning block section, and FIG. 6 is a side sectional view of the same. 12 , , , positioning block 13 , , , ,
Guide block, 15, Slide block, 2
400. - pin, 27. ,,,,spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2rM Figure 4

Claims (1)

[Claims] A plurality of positioning blocks each having a means for adjusting the position freely and a pin that fits into a positioning hole in a thin plate conveyed to a predetermined position on the rail are vertically slid, and the thin plate is attached to the pin. and means for constant positioning with reference to the upper or lower side.