JPH0581782B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to two types of reciprocating follow-up motion devices used for escape and the like for separating parts and the like one by one.

[Prior Art] This type of device is often used for escape purposes, and the present applicant previously proposed Utility Model Application No. 1-71259, but this device has a large number of parts, and the machining accuracy of each part is In addition, the slide bar protrudes in the lateral direction, which tends to cause interference problems.

Also, in the example shown in FIG. 12, frame D and pin E
The two sliders A and B are guided by the cam C, and the sliders A and B follow each other in a reciprocating manner by the reciprocating rotation of the approximately butterfly-shaped cam C. This achieves the purpose with a simple configuration and a small number of parts. , This also requires strict machining accuracy for each part, and the stroke is determined by the elongated hole and pin, the cam and slider groove, and the arc parts a and b, which has the disadvantage that it is easy to get stuck and play back and forth. It was hot.

[Object of the Invention] In view of the above points, the present invention provides a reciprocating follow-up motion device that has a small and simple configuration, has a small number of parts, is easy to process each part, and always advances one of the parts and never retreats at the same time. It is to make a proposal.

[Structure of the Invention] In order to achieve the above-mentioned object, the present invention rotates a drive wheel having a locking part and a drive part back and forth to perform a reciprocating following motion. Specifically, the present invention includes: first and second longitudinally movable members; circular and linear grooves formed on the longitudinally movable members and mating; an arcuate locking portion that fits in the circular groove; and a drive portion that fits in the linear groove. The purpose was achieved by the configuration of a drive wheel and a drive source that rotates the drive wheel back and forth within one rotation.

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

Configuration A rotary actuator 1 is fixed to a plate 2. A frame body consisting of a frame 6 and a rectangular sole plate 7 is fixed to this plate 2 with assembly screws 8.
Sliders 4 and 5 are movably mounted.

Reference numerals 61 and 71 are holes into which the assembly screws 8 are fitted.

The rotation shaft 11 of the rotary actuator 1 protrudes from the hole 21 of the plate 2, and the drive wheel 3 is attached to the set screw 3 in the through hole 64 of the frame 6.
It is fixed by 7.

The drive wheel 3 has a center hole 3 into which the shaft 11 fits.
1. A hole 32 into which a pin 35 is press-fitted, an arc-shaped locking part 33, and a screw hole 3 into which a set screw 37 is screwed.
4 is formed. A roller 36 is rotatably supported on the pin 35.

The sliders 4, 5 have semicircular circular grooves 41, 51 with the same diameter as the outer circumference of the locking part 33, straight grooves 42, 52 deeper than the circular grooves, and semicircular grooves 43, 53 with the same depth as the circular grooves. is formed.

The locking portion 3 is provided in the circular grooves 41 and 51.
3, the roller 36 is fitted into the linear grooves 42 and 52 so as to be able to move in and out, and the grooves 43 and 53 are provided so that the locking part 33 does not come into contact with them. (See Figure 4) The reciprocating follow-up motion device of the present invention is now complete, and when using this device, the holes 62 and 7 must be
It is sufficient to attach it to the equipment to be used using the mounting screw 9 inserted in 2.

In addition, in actual use, slider 4,
Needless to say, an appropriate part is fixed to the tip of the tip 5, or the tip is shaped into a desired shape.

Operation FIGS. 1 to 3 show an intermediate state in which the sliders 4 and 5 move forward, and FIG. 4 shows a state in which the slider 4 moves forward and the slider 5 moves backward.

The rotating shaft 11 of the rotary actuator 1 is
Makes a 180 degree reciprocating rotation.

First, when the drive wheel 3 is rotated clockwise via the rotary shaft 11 in the state shown in FIG. 4, the slider 4 is moved by the locking part 33 in the circular groove 41 until it reaches the state shown in FIG. is blocked and stopped at the forward end.

On the other hand, the roller 36 moves the slider 5 to the left through the linear groove 52 to position the slider 5 in the state shown in FIG. 3, that is, the sliders 4 and 5 are at the forward end. During this time, the locking portion 33 is removed from the recessed groove 53 and fitted across the circular grooves 41 and 51.

When the drive wheel 3 is further rotated, the locking portion 33 now fits into the circular groove 51 and prevents the slider 5 from moving, so that the slider 5 is stopped at the forward end.

Then, the roller 36 enters the linear groove 42 and moves the slider 4 backward to the right. At this time, the circular groove 41 separates from the locking part 33 and retreats, and finally the end of the locking part 33 faces into the groove 43 and stops without touching it, completing one operation, and the state is reversed to that shown in FIG. becomes.

In this way, during the rotation of the drive wheel 3, one slider moves forward and lines up with the other slider, and then the other slider moves backward, making a follow-up operation, so that one of the sliders is always moving forward and the slider repeats back and forth movements alternately.

When this reciprocating follow-up motion device is used for escaping, an escape claw (not shown) or the like may be attached to the slider so as to face the path of parts, etc.

[Modification] In the above embodiment, a part of the circular groove and the straight groove overlap, but depending on the arrangement of the locking part and the roller, they do not overlap.

Further, the roller may be a pin.

Further, the angle of the locking portion may be 230 degrees or less, or may be smaller than 180 degrees, and depending on the rotation angle of the locking portion, a groove is not required. However, if the slider stops unstable, it is preferable to provide a click stop means that acts on the slider at the forward end of the slider.

Of course, the use of the device of the present invention is not limited to escaping parts.

[Effects of the Invention] The present invention is configured as described above, has a small and simple configuration, has a small number of parts, is easy to process and assemble each part, and always has one moving forward (or backward). It is possible to reliably perform reciprocating follow-up motion without moving backward (forward) at the same time, and, for example, it can be used to escape parts and reliably separate them one by one.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a vertical sectional view of the main part thereof, Fig. 3 is a sectional view taken along line XX, Fig. 4 is a sectional view taken along line XX of the operating end, and Fig. 5 is a sectional view taken along line XX. is a plan view of the drive wheel, FIG. 6 is a Y-Y sectional view thereof, FIG. 7 is a plan view of the slider mating, FIG. 8 is a front view of the mating side, and FIG. 9 is a plan view of the frame. FIG. 10 is a Z-Z sectional view thereof, FIG. 11 is a plan view of the sole plate, and FIG. 12 is an explanatory diagram of a conventional example. DESCRIPTION OF SYMBOLS 1... Rotary actuator, 11... Rotating shaft, 2... Plate, 3... Drive wheel, 3
3...Locking part, 36...Roller, 4,5...
...Slider, 41,51...Circular groove, 42,5
2... Straight groove, 6... Frame, 63... Guide groove, 7... Sole plate, A, B... Slider, C... Cam, D... Frame, a, b... Arc portion.

Claims (1)

[Scope of Claims] 1. First and second longitudinally movable members that are linearly movable and guided side by side on a frame body, and formed on the longitudinally movable members, and the two mating members form a circular shape and a straight line perpendicular to the direction of movement. A drive wheel comprising a groove, an arc-shaped locking part that fits in the circular groove, and a drive unit consisting of a pin or roller that fits in the straight groove, and a drive source that is attached to the frame side and rotates the drive wheel back and forth within one revolution. A reciprocating follow-up motion device. 2. The reciprocating follow-up motion device according to claim 1, wherein a portion of the circular groove and the linear groove are overlapped, and the linear groove is deeper than the circular groove. 3. The reciprocating follow-up motion device according to claim 1, wherein the angle of the locking portion is 180 to 230 degrees, and a groove for removing the locking portion is formed in the longitudinally moving member.