JPS5927466B2 - Mechanism that converts reciprocating linear motion into cyclic motion with a parallelogram-shaped trajectory - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mechanism for converting reciprocating linear motion into cyclic motion having a parallelogram-shaped locus.

Conventionally, in general, a method for converting reciprocating linear motion into cyclic motion with a parallelogram-shaped locus is to generate a force for reciprocating linear motion, for example, by using two linear cylinders in a cross manner, and to convert the two linear cylinders into Two methods are being considered: one that performs electrical control and the other that uses a guide cam plate as shown in FIG.

However, the former method requires two linear cylinders, which increases the cost, and also requires control of the two linear cylinders.

In the latter case, the locus of points could be similar to a parallelogram, but it was impossible as a locus of lines, and it lacked practicality as a slide.

Even if only the locus of the point is considered, as shown in Fig. 4, an extra lead is required in order to completely branch the guide 13 at the branch point 14, and for that purpose, a perfect parallelogram is required. It was not possible to trace the shape.

The present invention was invented in view of these points, and includes a first slide that is movable in the horizontal direction, and a first slide that is movable in the vertical direction within a guide fixed to the first slide. 2 slide and a link that transmits the force of reciprocating linear movement,
a guide cam plate forming a parallelogram-shaped groove, and the second slide and the link are connected by a roller-shaped shaft that moves within the parallelogram-shaped groove. It is.

According to the present invention, it is possible to easily cause the second slide to have a cyclic movement of a complete parallelogram-shaped trajectory by using a force for one reciprocating linear movement, for example, one linear cylinder. It is possible.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a mechanism for converting reciprocating linear motion into cyclic motion with a parallelogram-shaped locus, which is an embodiment of the present invention; FIG. 2 is a plan view of the mechanism shown in FIG. 1; and FIG. The figure is a sectional view taken along the line XX of the mechanism shown in FIG.

The mechanism of the present invention includes a first slide 1 which is movable in the horizontal direction by resting on a horizontal guide 2, a vertical guide 5 provided integrally with the first slide 1, and a vertical guide 5 which is movable in the vertical direction by resting on the vertical guide 5. a movable second slide 3; a fixed plate 9 provided integrally with the horizontal guide 2; guide cam plates 7 and 8 forming parallelogram-shaped grooves 20 and provided integrally with the fixed plate 9;
equidisc plates 10 and 10' located between the fixed plate 9 and the guide cam plate 8 and fixed to the fixed plate 9 via a shaft having a one-way clutch; and a guide cam plate connected to the second slide 3; It is composed of a roller-shaped shaft 6 that can move within a groove 20 formed by sections 7 and 8, a linear cylinder 11 that applies reciprocating linear movement force to the roller-shaped shaft 6 via a link 4, and the like.

Next, the operation of the present invention will be explained.

When the linear cylinder 11 operates and starts moving forward, the link 4
Straight force is transmitted to the roller-shaped shaft 6 via the roller-shaped shaft 6.

A roller-shaped shaft 6 moves along a horizontal groove 20 formed by guide cam plates 7 and 8 from point A to point B.

A second slide 3 connected at the same time to a roller-shaped shaft 6
The vertical guide 5 is operated and the first slide 1 is moved straight on the horizontal guide 2.

At this time, since the second slide 3 is connected to the roller-shaped shaft 6, it cannot be moved downward by the guide cam plates 7 and 8.

When the roller-shaped shaft 6 enters point B, the second slide 3 connected to the roller-shaped shaft 6 moves downward along the vertical guide 5.

At the same time, the roller-shaped shaft 6 moves downward in the groove 20 in conjunction with the second slide 3, rotates the pawl 12 of the equal disk 10 by one pitch, and reaches the lower point C.

When the linear cylinder 11 makes a backward movement, the equal disk 10 does not rotate to the left due to the one-way clutch, so the roller-shaped shaft 1 does not advance upward, and the horizontal groove formed by the guide cam plates 7 and 8 20 and move in the direction of point D.

A second slide 3 connected at the same time to a roller-shaped shaft 6
moves the first slide 1 to the horizontal guide 2 via the vertical guide 5 and moves straight to the right.

When the roller-shaped shaft 6 reaches point D, the roller-shaped shaft 6
The second slide 3 connected to the vertical guide 5 moves upward.

At the same time, the roller-shaped shaft 6 moves upward in the groove 20 in conjunction with the second slide 3, and the pawl 12' of the equidisc plate 10'
Make a pitch circuit and reach point A.

Also, when the linear cylinder 11 moves forward, the equal disk 10
Since ' is not rotated to the left by the one-way clutch, the roller-shaped groove 6 does not move downward, but moves horizontally within the groove 20 formed by the guide cam plates 7 and 8 in the same manner as described above.

In this way, the second slide 3 undergoes a cyclic movement along a parallelogram-shaped trajectory.

As described above, the present invention relates to a mechanism for converting reciprocating linear motion into cyclic motion having a trajectory shaped like a parallelogram.

According to the present invention, it is possible to cause the second slide to move in a complete parallelogram shadow-like cyclical motion by using only one linear cylinder, and there is no need for control and the cost is low. .

[Brief explanation of the drawing]

FIG. 1 is a front view of a mechanism for converting reciprocating linear motion into cycle motion of a parallelogram-shaped locus, showing an embodiment of the present invention; FIG. 2 is a plan view of the mechanism shown in FIG. 1; 3 is a sectional view taken along line X-X of the mechanism shown in FIG. 1, and FIG. 4 is a schematic diagram showing the conventional mechanism. Explanation of symbols, 1...First slide, 2...Horizontal guide, 3...Second slide, 4...Link, 5...
・Upper and lower guide, 6...Roller-shaped shaft, I and 8・
...Guide cam plate, 9...Fixing plate, 10, 10'...
・Equidisk, 11...straight cylinder, 12, 12'
...Claw, 20...groove.

Claims (1)

[Claims] 1. A first slide 1 movable in the horizontal direction;
a second slide 3 that is movable in the vertical direction within a guide 5 fixed to the slide 1; a link 4 that transmits the force of reciprocating linear motion; a guide cam plate 7 that forms a parallelogram-shaped groove 20; 8, a roller-shaped shaft 6 that connects the second slide 3 and the link 4 and moves within the parallelogram-shaped groove 20, and a roller-shaped shaft 6 that connects the second slide 3 and the link 4 and moves within the parallelogram-shaped groove 20; means 10, 10' for reliably branching the axis 6 of the shape, and converting the force of the reciprocating linear movement transmitted through the link 4 into the cyclic movement of the parallelogram-shaped trajectory of the second slide 3. A mechanism for converting reciprocating linear motion into cyclic motion having a parallelogram-shaped locus. 2. The means 10, 10' for reliably branching the roller-shaped shaft 6 is a rotary disk that can rotate in only one direction. A mechanism that converts a parallelogram-shaped locus into cyclic motion.