JPS6325221B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for stopping a reciprocating actuator at an arbitrary set position by reversing the tilting angle of a driven rotary ring whose inner circumference is in contact with the outer circumference of a rotary drive shaft.

For reciprocating actuators, Japanese Patent Publication No. 33-6174,
There are the conventional type as disclosed in Japanese Utility Model No. 47-12901, and the improved type described in the specifications of Utility Application No. 58-60742 to Utility Model Application No. 58-60746. Also, the driven rotating ring reversed at the end of the reciprocating motion and the reciprocating motion was interrupted without interruption, so when the reciprocating motion of the reciprocating actuator was temporarily stopped as necessary, the driven rotating ring was pressed into contact each time. The rotation of the rotary drive shaft must be stopped, and even if the rotation of the rotary drive shaft is stopped, there is a kinetic inertia force on the shaft, so it is difficult to accurately stop the reciprocating actuator at the desired position. It had drawbacks such as being difficult.

The present invention eliminates the above-mentioned drawbacks, and not only rotates the reversing lever against the spring, but also widens the angle between the reversing lever and the tilting arm substantially in a straight line against the spring, so that the driven By making the rotary ring perpendicular to the rotary drive shaft and making the tilt angle zero, the reciprocating force transmitted from the rotary drive shaft to the driven rotary ring is made zero and the reciprocating actuator is held in a stopped state. Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS.
Both ends are supported by the machine frame 4.

Inside the reciprocating actuator 1, as shown in FIG. 3, driven rotating rings 6a, 6b, 6c are rotatably supported by a tilting frame having tilting shafts 5a, 5b, 5c bearing on the actuator 1. However, the inner circumference of the central ring 6a is pressed against the outer circumference of the rotary drive shaft 2 with an arcuate bulged inner circumferential portion having a phase difference of 180 degrees with respect to the rings 6b and 6c on both sides, and the adjacent tilting frames are in contact with each other. They are connected by links 7, 7' so that they can tilt by the same angle in opposite directions.

Therefore, driven rotation rings 6a, 6b, 6c
The driven rotation rings 6a, 6b,
By reversing the tilt angle of 6c, it moves in the opposite direction.

Then, the respective driven rotation rings 6a, 6b, 6
The reversal tilting of c is performed by rotating the tilting arm 8 fixed to the shaft end of the tilting shaft 5a of the central ring 6a, while the reversing lever 9 loosely fitted on the shaft end of the tilting shaft 5a A coil spring 10 is stretched between the reversing lever 9 and the arm 8, and the reversing lever 9 is connected to a pair of stoppers 11a and 11 that project apart from the reciprocating actuator 1 as shown in FIG.
The range of rotation is limited so that it can be rotated by the biasing force of the spring 10 between the positions b.

The tilt angles of the driven rotation rings 6a, 6b, and 6c are determined by rotating the tilt angle setting dial plate 13 fixed to the shaft end of the eccentric shaft 12 shown in FIG. The tilting angle is set to a desired tilting angle by controlling the increase/decrease of the tilting angle according to the amount of eccentric movement of the eccentric shaft 12 in contact with the frame, and the speed of the reciprocating motion is determined.

Therefore, when the reciprocating actuator 1 is moving forward in the direction of arrow A in the state shown in FIG.
is located on the left side of the tilting shaft 5a in the figure, and the other end 9a of the reversing lever 9 comes into contact with the stopper 11a,
The tilting arm 8 maintains the tilt of the driven rotating ring 6a at a desired angle, and when the reversing lever 9 is reversed against the biasing force of the spring 10 by a striker (not shown) disposed at both ends of the reciprocating motion, The spring 10 moves from the left side of the tilting shaft 5a shown in FIG.
a collides with the stopper 11b, so that the tilting arm 8
The driven rotation rings 5a and 5 are also reversed by the spring force.
Since the tilting angles of b and 5c are reversed, the reciprocating actuator 1 moves in reverse.

As mentioned above, in order to stop the reciprocating actuator that continues to reciprocate without interruption, it can only be done by stopping the rotation of the rotary drive shaft. As shown in FIGS. 1 to 4, by providing a striker 14 at a desired temporary stop position on the reciprocating path of the reciprocating actuator 1, the reciprocating actuator is temporarily stopped by stopping the rotation of the rotary drive shaft. It is characterized by the fact that it was realized without any problems.

That is, the striker 14 pushes the free end of the reversing lever 9 by a solenoid 16 which is activated for a limited time in response to an activation signal from the limit switch, via a limit switch 15 that is activated when a roller attached to the free end of the tilting arm 8 comes into contact with it, and a timer. It has a reversing operation pin 17 that protrudes to move.

Therefore, as shown in FIG.
is the striker 1 placed at the desired temporary stop position.
4, the tilting arm 8 operates the limit switch 15, and then the free end of the tilting arm 8 presses against the striker 14 via the roller, and the free end of the reversing lever 9 also presses against the striker 14 via the roller. When the angle between the tilting arm 8 and the reversing lever 9 is gradually expanded against the biasing force of the coil spring 10, the tilting angle of the driven rotation ring 5a gradually becomes zero.
That is, since the reciprocating actuator 1 is raised to a position perpendicular to the rotary drive shaft 2, the forward movement speed of the reciprocating actuator 1 is gradually reduced, and as shown in FIG.
If the angles of rotation are expanded on a straight line passing through the center of the tilting shaft 5a, the forward movement speed of the reciprocating actuator 1 becomes zero and the actuator 1 stops. At this time, the coil spring 10 is located approximately at the dead center passing over the tilting shaft 5a, and is held in an inactive state, so that the reversing lever 9 can be reversed with a very small force (solenoid force).

However, if the inoperable state at the dead center is unstable, the diameter of the roller attached to the free end of the reversing lever 9 should be made smaller than the diameter of the roller attached to the free end of the tilting arm 8, or both Even if the roller diameters are the same, the surface of the striker that the free end roller of the reversing lever 9 presses against is made slightly more concave than the surface of the striker that the free end roller of the tilting arm 8 presses against, so that the tilting arm 8 can rotate. The fourth perpendicular to the drive shaft 5a
Even if the reversing lever 9 is bent slightly to the left in the posture shown in the figure and the coil spring 10 is positioned to the left of the tilting shaft 5a, the lever 9 remains in a substantially straight state and can be reversed with a small force. .

The stop state of the reciprocating actuator 1 is set by the limit switch 1.
5, the reversing pin 17 is operated to protrude by a solenoid activated for a limited time by a timer or the like, and the reversing lever 9 is pushed counterclockwise in FIG. 4, thereby moving the coil spring 10 to the right side of the tilting shaft 5a. The tilting arm 8 and the reversing lever 9 are rotated in a direction in which the angle of the reversing lever 9 is reduced by the biasing force of the coil spring 10, and the reversing lever 9 is released.
When the other end 9a collides with the stopper 11b, the rotation of the tilting arm 8 is stopped, and the driven rotation ring 6a
The reciprocating actuator 1 is caused to move backward by having its tilt angle reversed and maintained.

Therefore, if the strikers 14 are arranged as a pair on the left and right as shown in FIGS.
can perform an operation of intermittently repeating reciprocating motion while temporarily stopping at the striker installation position.

In addition, a limit switch 15 is added to the striker 14.
By energizing the solenoid 16 with a manual push button, the reversing actuating pin 1 is
7 may be protruded, and the reversing lever 9 may be operated in reverse, and in the case of such manual operation, the stop time of the reciprocating actuator 1 can be increased or decreased at any time.

It goes without saying that the protruding operation of the reversing operation pin 17 may be performed using a known actuation means such as an air cylinder instead of a solenoid.

As described above, the present invention not only allows the reciprocating stroke length of the reciprocating actuator to be freely changed by arranging the striker at any desired position, but also makes it possible to temporarily stop the reciprocating actuator at any desired position. When reciprocating multiple reciprocating actuators using one rotary drive shaft, any reciprocating actuator can be temporarily stopped while maintaining the rotational drive state without stopping one rotary drive shaft. let me,
Alternatively, it is possible to continuously reciprocate only an arbitrary reciprocating actuator, so when a plurality of winding drums have different winding widths, winding guides with different stroke lengths can be created using one rotary drive shaft. It is possible to drive a reciprocating machine with a reciprocating machine installed, and it is also possible to keep a winding guide that does not require winding in a rest state, and even when a paint spray nozzle is installed on a reciprocating machine, each The present invention makes it possible to increase or decrease the reciprocating stroke and to freely select whether to stop or pause at any desired position, etc. The effect is significant.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic plan view of a reciprocating device equipped with a striker, and FIG.
The figure is a front view of Figure 1, Figure 3 is a perspective view of the main part, and Figure 4 is a front view of Figure 1.
The figure is a bottom view of the reciprocating actuator when the reciprocating actuator is stopped.
The figure is a bottom view of the reciprocating actuator during forward movement. 1... Reciprocating actuator, 2... Rotating drive shaft, 5a, 5
b, 5c...Tilt axis, 6a, 6b, 6c...Driven rotating ring, 8...Tilt arm, 9...Reversing lever, 10...Coil spring, 11a, 11b...Stopper, 14...Striker, 15...Limit switch, 17...Reversing operation pin .

Claims (1)

[Scope of Claims] 1. The driven rotation of the reciprocating actuator that reciprocates on the rotary drive shaft by reversing the tilt angle of a driven rotary ring that penetrates the rotary drive shaft and whose inner circumference touches the outer circumference of the shaft. A tilting arm is fixed to the end of the tilting shaft of the ring, a reversing lever is loosely fitted, a coil spring is stretched between the tilting arm and the reversing lever, and a stopper is provided to limit the range of rotation of the reversing lever by the coil spring. A striker is provided on the reciprocating actuator and abuts the tilting arm and the reversing lever at a temporary stop position on the reciprocating path of the reciprocating actuator, and the striker includes a reversing actuation pin that pushes the reversing lever. A stop device for reciprocating machines equipped with 2. At the tilting shaft end of the driven rotary ring of the reciprocating actuator that reciprocates on the rotary drive shaft by inserting the rotary drive shaft and reversing the tilting angle of the driven rotary ring whose inner circumference touches the outer circumference of the shaft. The reciprocating actuator is provided with a stopper that fixes the tilting arm, loosely fits the reversing lever, and tensions a coil spring between the tilting arm and the reversing lever, and limits the range of rotation of the reversing lever by the coil spring; A striker that contacts the tilting arm and the reversing lever is disposed at a temporary stop position on the reciprocating path of the reciprocating actuator, and the striker includes a limit switch that is activated by contact with the tilting arm, and a limit switch that is activated by the contact of the tilting arm. A reciprocating machine stopping device comprising a reversing operation pin that operates for a limited time to push the reversing lever.