JPS5928437B2 - Ichiki Me Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a positioning device for forcibly stopping a moving object having a large inertial force, such as a bolster in a press machine, at a preset desired position.

Generally, when stopping a moving object with a large inertial force at a predetermined position, the faster the speed of the moving object, the stronger the stopper mechanism for stopping it needs to be made in accordance with the speed.

In addition, if the stopping position is limited to one predetermined place, there is no problem, but if there are more than two stopping positions, the intermediate stopper should be placed so that it does not interfere with the movement of the moving object, as shown in Figure 1. It is necessary to construct a movable stopper that can be retracted and retracted, and it is technically difficult to make it structurally strong.

It is an object of the present invention to eliminate the above-mentioned conventional problems and to provide a sturdy stopper device that can reliably stop at a plurality of predetermined stopping positions.

Next, an embodiment in which the present invention is applied to a press machine will be described based on the drawings.

In the attached drawings, 1 is a bolster that is slidably placed on the base plate 2, 3 is a support stand provided on both sides of the plywood 20, and 4 is a
5 is a metal holder fixed to this support stand 3, and 5 is this metal holder 3.
It is a beam fixed to the

Reference numeral 6 denotes a tension rod that passes through each beam 5 and is tightened at both ends with nuts 7.The center portion is supported by a support metal fitting 8 provided on the base plate 2, and a compression rod is provided between each beam 5 and the support metal fitting 8. It is inserted into the sleeves 9, 9'.

10 and 11 are intermediate stoppers, and 12 is an end stopper, each of which has its base end rotatably supported by a pin hinge 13, and whose base end boss outer circumferential surface is formed into an arcuate surface to form the support 4. It is designed to be received by concentric arcuate surfaces 14.

Further, the end stopper 12 is held horizontally by appropriate known technical means such as a protrusion so as not to rotate.
Each of the other intermediate stoppers 1o and ii is formed in a U-shape so as not to interfere with each other, and is configured to tilt and hang around the hinge pin 13, with each lower end attached to a support base 3.
It is connected to cylinders 15 and 16 which are movably mounted on the cylinders 15 and 16.

By appropriately increasing or decreasing the number of intermediate stoppers configured in this manner depending on the stopping position of the bolster 1, the bolster 1 can be stopped at a desired position, and by replacing the intermediate stopper, the stopping position can be changed at will. You can also change it.

Note that 17 is a cylinder for moving the bolster 1.

Next, the operation of the above positioning device will be explained.

To stop the bolster 1 at position A, first supply pressure oil to the cylinder 15 and move it upward so that the top surface of the intermediate stopper 10 is horizontal, then supply pressure oil to the cylinder 17 and move the bolster 1 to the right. When it moves, the side end surface S stops at a position where it hits the tip end surface of the intermediate stopper 10, that is, a preset position A, as shown in the figure.

Most of the energy due to the impact at this time is transmitted from the intermediate stopper 10 to the support 4 via the arcuate surface 14, and further transmitted to the tension rod 6 via the beam 5.

Therefore, the tensile force acting on the pull bar 6 acts to compress the compression sleeve 9' on the opposite side, and the energy is absorbed by the tensile and compressive forces acting on the pull bar 6 and the compression sleeve 9'. In other words, force is applied to the base plate 2.

Next, when stopping the bolster 1 at position B, operate the cylinder 15 to move the intermediate stopper 10 downward as shown by the chain line, and operate the cylinder 16 to move the intermediate stopper 10 downward.
After horizontally moving upward, when the moving body is moved to the right by the operation of the cylinder 17, the bolster 1 is stopped at a predetermined position by the contact surface of the intermediate stopper 11, and the energy due to the impact is absorbed by the tension rod 6 and the compression sleeve q as described above. is absorbed.

In this way, the desired position A, A', B, B',
C.

When stopping the bolster 1 at any time, the contact surface of the stopper corresponding to the position should be aligned with the side surface S or L of the bolster 1.
The same effect as described above can be achieved by holding the front intermediate stopper horizontally so that it faces the moving body 1, and by pulling down the tip of the intermediate stopper at the front stage so as not to interfere with the passage of the moving body 1.

In the embodiment shown in the drawings, each stopper is retracted by pulling down the cylinders 15 and 16, but the same purpose can be achieved even if the stoppers are pulled upward.

In addition, in order to maintain an accurate stopping position, move cylinder 1
It is preferable to send pressurized oil in the direction of pressing the bolster 1 against the stopper surface until the bolster 1 completely stops at T.

As described above, the present invention connects the stopping mechanisms for a plurality of stopping positions to the same tension rod, so the structure is significantly simplified, and not only can the stopping mechanism be reliably stopped at a predetermined position, but also the return after stopping can be prevented as much as possible. It has many effects, such as relatively easy change of the stop position, and can reliably achieve the intended purpose of the invention.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a conventional stopper, Fig. 2 is a front view of the positioning device of the present invention, Fig. 3 is a plan view, Fig. 4 is a cross-sectional view taken along the line - - in Fig. 1, and Fig. 5 1 is a sectional view taken along line V in FIG. 1. FIG. 1... Moving object (for example, bolster), 2...
... Base plate, 3 ... Support stand, 4 ... Bracket, 5 ... Beam, 6 ... Tension rod,
8...Support hardware, 9. 9'...Compression sleeve, 10.11...Intermediate stopper, 12
...End stopper, 13...Hinge pin, 14...Circular surface, 15, 16, 17...
····Cylinder.

Claims (1)

[Claims] 1 A plywood board is installed in the center, and a plurality of stoppers consisting of an end stopper and an intermediate stopper are arranged on both sides of the plywood so that their free ends face each other, and the base ends of the plurality of stoppers are arranged in a circular arc. It is supported by concentric arcuate surfaces formed on metal supports fixed to support stands provided on both sides of the plywood.
movably supporting at least intermediate stoppers among the plurality of stoppers so as not to interfere with each other, and providing a cylinder for tilting the intermediate stoppers;
A positioning device characterized in that both of the beams fixed to the metal support are fastened together with plywood and a compression sleeve interposed between the beams, using a tension rod whose center portion is supported by the plywood.