JPH01177976A - Rectangular object positioning mechanism - Google Patents

Abstract

PURPOSE:To make the positioning of a rectangular object possible without the entering of its corner between L-shaped fixed and movable blocks by providing the L-shaped fixed block with a shock absorber having a movable part which can move freely in a direction about vertical to an inside face of the bent part of the block. CONSTITUTION:After a rectangular object is put between L-shaped fixed and movable blocks 1 and 6, the L-shaped movable block 6 is moved toward the L-shaped fixed block 1 along the straight groove 12 of a base plate 13, and the rectangular object is thereby held between balls 2 in the L-shaped fixed block 1 and balls 7 at the tips of pins (movable part) 8 of the movable block 6. The L-shaped movable block 6 is next moved farther toward the L-shaped fixed block 1 along the groove 12 to make the balls 2 enter into the L-shaped fixed block 1 against the reactive force of springs 3. Thus the rectangular substance 14 is finally positioned. In addition, when the rectangular object varies in the ratio or a long side to a short one, and its variation is within the range of the entering amount of the pin 8 in the L-shaped movable block 6, the above- mentioned positioning mechanism can be used.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a positioning mechanism for parts, and particularly to a positioning mechanism for rectangular objects.

[Prior Art] Conventionally, as shown in FIG. 4, a rectangular object positioning mechanism includes a base plate 24 in which a single linear groove 23 is provided from the center to the periphery, and a groove on the base plate 24. Place the base plate 2 on the extension line of 23 with the bent inside facing toward the groove 23.
4, and an L-shaped movable block 22 that moves on a base plate 24 along a groove 23 with its bent inside facing toward the L-shaped fixed block 21, and has a rectangular shape. The object 25 is moved between the L-shaped fixed block 21 and the L-shaped movable block 22 by the movement of the L-shaped movable block 22.
It was designed to be fixed and positioned by being sandwiched between the two.

[Problems to be Solved by the Invention] The conventional rectangular object positioning mechanism described above has a structure in which the L-shaped movable block moves along a predetermined straight line along a groove to sandwich the rectangular object between the L-shaped fixed block. Therefore, it is not possible to position a rectangular object with a different ratio of long sides to short sides.
In addition, in the case of a rectangular material having hard and sharp edges such as ceramics, there is a drawback that the sharp edges dig into part of the surfaces of the L-shaped fixed block and the L-shaped movable block, making it impossible to position them.

[Means for Solving the Problems] The rectangular object positioning mechanism of the present invention includes a base plate provided with a single linear groove extending from the center to the periphery, and a rectangular object positioning mechanism formed on the base plate on an extension line of the groove. , an L-shaped fixed block fixed with its bent inner side facing the direction of the groove, and movable on the base plate along the groove;
It consists of an L-shaped movable block whose bent inner side faces the bent inner side of the bent fixed block, and the double-sided block has an L-shaped movable block that protrudes from each side of the bent inner side and is attached to the bent inner side. A shock absorber is provided which includes a movable part that is movable in a direction generally orthogonal to the block and that makes point contact with each surface of the rectangular object placed between the double-sided blocks.

[Operation] Since the rectangular object to be positioned is fixed in position while making point contact with the movable part of the shock absorber on the inside surface of the bend between the L-shaped fixed block and the L-shaped movable block, the corner of the rectangular object is There is no sliding and digging into the surfaces of the fixed block and L-shaped movable block, and even if the ratio of the long side to the short side of a rectangular object changes, the range of the protrusion distance of the shock absorber from the block surface Can be used within.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view including a cross section of an embodiment of the rectangular object positioning mechanism of the present invention, FIG. 2 is a plan view when a rectangular object is sandwiched between the rectangular object positioning mechanisms of FIG. 1, and FIG. FIG. 2 is a plan view when a rectangular object is positioned by the rectangular object positioning mechanism of FIG. 1;

This rectangular object positioning mechanism is arranged diagonally from the center.
a base plate 13 in which a linear wooden groove 12 is formed;
L-shaped fixing block 1 is fixed on the extension line of the groove 12 of the base plate 13 with the bent inner side facing the groove 12.
and an L-shaped movable block 6, which is movable on a base plate 13 along a groove 12 by a pin 11 provided on the bottom surface, and whose bent inner side faces the bent inner side of the L-shaped fixed block 1. has been done. The L-shaped fixing block 1 has one through hole bored in each of the two bent outer sides, one end of this through hole is formed with a screw, and the other end has a smaller diameter. In this through hole, a ball 2 having a diameter larger than that of the other end is partially protruded from the block 1 and is held by a disk 5, a spring 3, and a screw 4.The L-shaped movable block 6 is L-shaped fixed block 1
Similarly, two through holes are bored, and these through holes also have a thread formed at one end and a smaller diameter at the other end. In this through hole, a pin 8 having a ball 7 rotatably attached to its tip end protrudes from the through hole and is held by a spring 9 and a screw 10.

Next, the operation of this embodiment will be explained.

First, a rectangular object 14 is placed between the L-shaped fixed block 1 and the L-shaped movable block 6. Next, the L-shaped movable block 6 is inserted into the groove 12.
along the L-shaped fixed block 1 and sandwiched between the ball 2 of the L-shaped fixed block 1 and the ball 7 of the L-shaped movable block 6, as shown in FIG. Then, the L-shaped movable block 6 is further moved in the direction of the L-shaped fixed block 1 along the groove 12, and the ball 2 is moved against the force of the spring 4 to the L-shaped fixed block 1, as shown in FIG. By sinking, the rectangular object 14 is finally positioned.

Note that even if the ratio of the long side to the short side of the rectangular object 14 to be positioned changes, it can be used as long as it is within the range of the sinking amount of the pin 8 of the L-shaped movable block 6.

[Effects of the Invention] As explained above, the present invention has an L-shaped fixed block and an L-shaped movable block that protrude from the inside of the bend and move in a direction substantially perpendicular to the surface, and have a tip that is connected to a rectangular surface. By providing a shock absorber that includes movable parts that come into contact with each other, when a rectangular object is being positioned, the corners of the rectangular object will not dig into the surface of the block and positioning will not be possible, and the long and short sides of the rectangular object will be Even if the ratio of

[Brief explanation of the drawing]

FIG. 1 is a plan view including a cross section of one embodiment of the rectangular object positioning mechanism of the present invention, FIG. This figure is a plan view when a rectangular object 14 is positioned by the rectangular object positioning mechanism shown in FIG. 1, and FIG. 4 is a plan view of a conventional example of the rectangular object positioning mechanism. 1...L-shaped fixed block, 2...ball, 3...
Spring, 4...Screw, 5...Disc. 6...L-shaped movable block, 7...ball, 8...
Pin, 9...Spring, 10...Screw, 11.
...Pin, 12...Groove, 13...Base plate, 14...Rectangular object. Patent applicant: NEC Co., Ltd. Representative: Susumu Uchihara, patent attorney

Claims (1)

[Scope of Claims] 1. A base plate provided with one linear groove from the center to the periphery, and an extension line of the groove of the base plate,
an L-shaped fixed block fixed with its bent inner side facing the direction of the groove; and an L-shaped fixed block that is movable on the base plate along the groove, and whose bent inner side faces the bent inner side of the L-shaped fixed block. an L-shaped movable block that protrudes from each inner surface of the bend and is movable in a direction generally perpendicular to the inner surface of the bend; A rectangular object positioning mechanism provided with a shock absorber including a movable part that makes point contact with each surface of a rectangular object placed on the surface.