JPH10329076A - Synchronous moving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain an initial stop position for a long period by a method wherein a stopper is arranged approximately coaxially with a piston and surface contact is ensured so that the end face of each moving part is brought into contact with the end face of the stopper. SOLUTION: A cam containing space is formed at the internal part of a fixing part 1, and a cam being a synchronous mechanism is rotatably contained. Meanwhile, when a cylinder chamber 5b is filled with compressed air is through one piping port 11, a moving part 5 is pressed and moved and brought into contact with a stopper 20 and stopped. In this case, a cam is driven and rotated and the other moving part 6 is moved in an opposite direction. By alternately repeating a feed of compressed air, a pair of the moving parts 5 and 6 are synchronously moved in an opposite direction to each other. Further, a pair of the stoppers 20 and 21 are arranged approximately on the same axis with pistons 9 and 10 and brought into surface contact with end faces 20a and 21a. This constitution maintains an initial stop position for a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronous moving device used for an automatic assembling machine or the like. The synchronous moving device according to the present invention mounts, for example, a tool on a moving part which is a component of the moving device, and performs operations such as work escapement, handling, and centering.

[0002]

2. Description of the Related Art Synchronous moving devices shown in FIGS. 6 to 9 are conventionally known as synchronous moving devices having a function of adjusting a slide stop position of a moving unit.

[0003] First, the device shown in FIG.
The piston 52 slidably inserted into the levers 53,5
4, a pair of moving parts 55, 56 arranged in series
Are moved in opposite directions to each other, and a stopper 57 is provided for regulating a retreating end position (a rising end position in the figure) of the piston 52, whereby the pair of moving parts 55 and 56 come close to each other. The stop position of the slide in the direction is regulated.

In the apparatus shown in FIG. 7, similarly, a piston 52 slidably inserted into a fixed portion 51 moves a pair of moving portions 55, 56 arranged in series via levers 53, 54 in opposite directions. A synchronous moving device that slides to
A stopper 58 that regulates the forward end position (downward end position in the drawing) of the piston 52 is provided, thereby restricting the stop position of the pair of moving parts 55 and 56 from sliding in the direction away from each other.

In the apparatus shown in FIG. 8, similarly, a piston 52 slidably inserted into a fixed portion 51 moves a pair of moving portions 55, 56 arranged in series via levers 53, 54 in opposite directions. A synchronous moving device that slides to
Tools 59 and 60 are attached to the pair of moving parts 55 and 56, respectively, and the tools 59 and 60 are provided with stoppers 61, whereby the pair of moving parts 55 and 5 are provided.
The stop positions of the slides 6 in the directions approaching each other are regulated.

In the device shown in FIG. 9, similarly, a piston 52 slidably inserted into a fixed portion 51 moves a pair of moving portions 55, 56 arranged in series via levers 53, 54 in opposite directions. A synchronous moving device that slides to
Tools 59 and 60 are attached to the pair of moving parts 55 and 56, respectively, and the tools 59 and 60 are provided with stoppers 62, whereby the pair of moving parts 55 and 5 are provided.
The stop positions of the slides 6 in the directions away from each other are regulated.

However, in the apparatus shown in FIGS. 6 and 7, since the stoppers 57 and 58 are arranged coaxially with the piston 51, respectively, the pair of moving parts 55 and 5 are provided.
There is an inconvenience that only the stop position can be adjusted in one of the directions in which the motors 6 approach each other or move away from each other.

In addition, in the apparatus shown in FIG. 8 or FIG. 9, a tool 59 and stoppers 60 and 61 are respectively provided.
A relatively large moment acts on the linear guide mechanisms 55a, 56a of the moving parts 55, 56 when these contact, the moments are applied to the linear guide mechanisms 55a, 56a.
The disadvantage is that it has a bad effect on the life of the device.

Japanese Patent Laid-Open Publication No. 1-146629 discloses a synchronous movement in which a pair of moving parts arranged in parallel are slidably inserted into a fixed part via pinion gears to slide a pair of moving parts arranged in parallel in opposite directions. An apparatus is disclosed. In this apparatus, a pair of moving parts is stopped by contacting a pusher that swings integrally with a pinion gear against a stopper screwed into a body. I have.

However, according to this device, since the pusher and the stopper abut on each other in line contact, the abutting portion is worn or plastically deformed early, and the stop position of the moving portion is changed early. There is.

[0011]

SUMMARY OF THE INVENTION In view of the above, the present invention is capable of restricting the stop position of a pair of moving parts in both the one direction and the opposite direction in each direction. It is possible to prevent a large moment from acting on the linear guide mechanism that guides the slide of the section, and further provided with a stop position adjusting function capable of maintaining the initial stop position for a long period of time. To provide a synchronized mobile device.

[0012]

In order to achieve the above object, a synchronous moving device according to the present invention comprises a pair of pistons provided in a fixed portion in parallel with each other, and a cylinder chamber into which the pistons are slidably inserted. A pair of moving parts provided, a linear guide mechanism connecting the fixed part and the moving part so as to be relatively displaceable, and when one of the moving parts is slid in one direction by supply of fluid pressure And a pair of stoppers that are attached to the fixed part so as to be adjustable toward the moving part and that abut when the moving part slides in one direction. And the stopper is disposed substantially coaxially with respect to the piston, and the moving part is brought into contact with the end face of the stopper at its end face.

[0013] In the synchronous moving device of the present invention having the above configuration, since the pair of moving parts are connected to each other via the synchronizing mechanism, one of the moving parts abuts the stopper and is directed in one direction. Is stopped at the same time as the slide of the other moving part is stopped. Therefore, by adjusting the stop position of the one moving unit in the one direction, the stop position of the slide in the opposite direction of the other moving unit is automatically adjusted.

Further, since the stopper is disposed substantially coaxially with the piston, it is possible to prevent a large moment from acting on the linear guide mechanism when the moving portion comes into contact with the stopper. Become.

Further, since each moving portion abuts on the end surface of the stopper at its end surface, surface contact is ensured, whereby it is possible to prevent the abutting portion from being worn or plastically deformed at an early stage.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of the synchronous moving apparatus according to the embodiment, FIG. 2 is a front view of the same, FIG. 3 is a bottom view, FIG. 4 is a sectional view taken along line AA in FIG. FIG. 5 is FIG.
FIG. 3 is a sectional view taken along line BB in FIG.

The synchronous mobile device according to the embodiment firstly
A fixing portion 1 is provided on both ends in the longitudinal direction of the fixing portion main body 2 to which side plates 3 and 4 are fixed, respectively.
A pair of moving parts 5 and 6 are arranged on a in such a manner as to slide in parallel with each other.

The moving parts 5 and 6 are respectively provided with linear guide mechanisms 7 and
The linear guide mechanism 7, 8 slides linearly along the longitudinal direction of the fixed part 1 by the fixed part 1.
A groove 1b provided along the longitudinal direction on the upper surface 1a of the
A convex portion (also referred to as a guide rail portion) 1c provided on each side wall of the groove portion 1b along the longitudinal direction, and a convex portion 1c
And concave portions 5a and 6a provided in the moving portions 5 and 6 so as to slidably engage with the movable portions 5 and 6, respectively. The convex portion 1c and the concave portions 5a, 6a have a substantially triangular cross section so as to correspond to each other. The groove portion 1b and the convex portion 1c are respectively provided over the entire length of the fixed portion main body 2, and the concave portions 5a,
6a is provided over the entire length of the moving parts 5 and 6.

A pair of pistons 9 and 10 are provided on one side plate 3.
Are fixed to the other side plate 4, one piston 9 is slidably inserted into a cylinder chamber 5 b provided in one moving unit 5, and the other piston 10 is Is slidably inserted into a cylinder chamber 6b provided at the bottom.

One end of each of the pistons 9 and 10 is inserted into holes 3a and 3b provided in one of the side plates 3, and piping ports 11 and 12 are provided at the one end. Also, through holes 9a, 10a are formed in the pistons 9, 10 so that compressed air, which is an operating pressure, can be supplied from the piping ports 11, 12 to the cylinder chambers 5b, 6b.
The piston 9 is provided to prevent the compressed air supplied to the cylinder chambers 5b and 6b from leaking to the outside.
Piston seals 13, 14 are provided on the outer periphery of 10.

As shown in FIG. 4, a cam receiving space 1d is provided inside the fixed portion 1, and the cam receiving space 1d
In addition, a cam 16 which is a component of the synchronization mechanism 15 is rotatably accommodated.

The cam 16 is disk-shaped, and the cam housing space 1d is also provided as a disk-shaped space so that the disk-shaped cam 16 can be rotatably housed. As shown in FIG. 3, the cam housing space 1 d is
In order to prevent the cam 16 from falling off from the lower surface opening, an annular mounting groove 1f is provided in the periphery of the opening, and a hole retaining ring 17 is fitted therein.
The cam receiving space 1d has a groove 1
b.

With the above-described configuration, the cam 16 has its flat surface 1
6a and the outer peripheral surface 16b are rotatably supported by the fixed portion 1 by slidingly contacting the inner wall of the cam housing portion 1d. In this case, the inner wall of the cam housing portion 1d is specifically, It will be referred to as the circular inner peripheral wall, the lower surface of the beam portion 1g between the pair of groove portions 1b, and the upper surface of the retaining ring 17.

Pin-shaped engaging portions (also referred to as protrusions) 18 and 19 are provided on the lower surfaces of the moving portions 5 and 6, and project into the cam accommodating portion 1d. The cam 16 engages with a pair of long groove-shaped engaging portions (also referred to as cam grooves) 16c and 16d. Therefore, for example, in FIG. 1, when the moving unit 5 on the upper and lower sides in the figure moves rightward, the cam 16 rotates counterclockwise, and the upper moving unit 6 follows in the left direction. Moves rightward, the cam 16 rotates clockwise, and the lower moving unit 5 follows leftward. The illustrated engaging portion 16
Each of c and 16d has a long groove shape, but may have a hole shape or a notch shape instead.

A pair of screw holes (not shown) are provided in the other right side plate (also referred to as an adjustment table) 4 in FIG. 1 in parallel with each other, and a pair of stoppers 20 and 21 are provided in parallel with each other, and The screw is screwed toward one of the side plates 3, and the fixing position is adjusted by adjusting the screwing amount, and then fixed by the fixing nuts 22 and 23.

Each of the stoppers 20, 21 is in the form of a male screw or a bolt, and has both end faces 20a, 20b,
21a, 21b are each formed in a plane orthogonal to the center axis thereof, and the end faces 20a, 2 on the moving parts 5, 6 side.
The end surfaces 5c and 6c of the moving parts 5 and 6 abut on 1a in a surface contact state. One stopper 20 is arranged substantially coaxially with one piston 9, and the other stopper 21 is arranged substantially coaxially with the other piston 10.

Next, the operation of the synchronous moving device having the above configuration will be described.

Each of the figures shows a state in which compressed air is not supplied to the apparatus, and the moving units 5 and 6 are each located at the center of the stroke.

First, from this state, when the compressed air supplied from the one piping port 11 is filled into the one cylinder chamber 5b through the through hole 9a, the one moving part 5 is pressed by the compressed air, and It moves while being guided by the guide mechanism 7, and comes into contact with one of the stoppers 20 and stops. At this time, the pin-shaped engaging portions 1 protruding from the moving portions 5 and 6 are provided.
8 and 19 are long groove-shaped engaging portions 16 provided on the cam 16.
c and 16d, the cam 16 is driven to rotate, and the other moving part 6 moves in the opposite direction while being guided by the linear guide mechanism 8 in the opposite direction.
Stops at the same time as stops.

Next, the compressed air filled in one of the cylinder chambers 5b is discharged, and
When the other cylinder chamber 6b is filled with the compressed air supplied from the second through the through-hole 10a, the other moving part 6 is pressed by the compressed air and moves while being guided by the linear guide mechanism 8, and the other stopper 21 is moved. Stop in contact with. At this time, similarly, the pin-shaped engaging portions 1 protruding from the respective moving portions 5 and 6 are provided.
8 and 19 are long groove-shaped engaging portions 16 provided on the cam 16.
c, 16d, the cam 16 is driven to rotate, and accordingly, one moving unit 5 moves in the opposite direction while being guided by the linear guide mechanism 7, and the other moving unit 6 moves.
Stops at the same time as stops.

Therefore, by alternately repeating the supply and discharge of the compressed air, the pair of moving parts 5 and 5
6 reciprocate in opposite directions, ie, move synchronously in opposite directions.

In the synchronous moving device having the above structure, the pair of moving parts 5 and 6 are connected to each other via the synchronizing mechanism 15 having the cam 16, so that one of the moving parts 5 is connected to the other. And stops sliding in one direction at the same time as the other moving unit 6 stops sliding in the opposite direction. Therefore, by adjusting the stop position of the one moving unit 5 in the one direction, the stop position of the other moving unit 6 in the opposite direction is automatically adjusted.
Conversely, the other moving part 6 abuts on the other stopper 21 and stops sliding in one direction, and at the same time, the one moving part 5 stops sliding in the opposite direction. . Therefore, by adjusting the stop position of the slide of the other moving unit 6 in one direction, the stop position of the slide of the one moving unit 5 in the opposite direction is automatically adjusted. Therefore, a pair of stoppers 20, 2
Providing 1 makes it possible to regulate the stop position of the slide in both the one direction and the opposite direction for each of the pair of moving parts 5 and 6. The adjustment work can be performed from one side of the apparatus, and thus the work is easy to perform.

Since the pair of stoppers 20, 21 are disposed substantially coaxially with the pistons 9, 10, respectively, the linear guide mechanism is provided when the moving parts 5, 6 and the stoppers 20, 21 abut. It is possible to prevent a large moment from acting on 7,8. Therefore, it is possible to prevent a large load from being applied to the linear guide mechanisms 7 and 8 due to the moment, thereby increasing the durability of the linear guide mechanisms 7 and 8.

When the moving parts 5, 6 slide, the end faces 5a, 6c of the end faces 20a, 21
In order to come into contact with a, they come into surface contact. Therefore, the contact portions between the moving parts 5, 6 and the stoppers 20, 21 can be prevented from being worn or plastically deformed at an early stage, whereby the initial stop position can be maintained for a long period of time. .

The fixed portion 1 is provided with a disk-shaped cam housing portion 1d for rotatably housing the disk-shaped cam 16, and the cam 16 slides its flat surface 16a and outer peripheral surface 16b on the inner wall of the cam housing portion 1d. Since it is freely rotatable by the fixed part 1 by being freely accessible, not only can the apparatus be miniaturized in the height direction, but also the accuracy of the automatic assembling machine can be improved, and the tact time can be improved. The productivity can be improved by shortening the time.

[0037]

The present invention has the following effects.

That is, in the synchronous moving device of the present invention having the above configuration, since the pair of moving parts are connected to each other via the synchronizing mechanism, one of the moving parts comes into contact with the stopper, and At the same time as the sliding in the direction stops, the sliding in the opposite direction of the other moving unit stops. Therefore, by adjusting the stop position of the one moving unit in the one direction, the stop position of the slide in the opposite direction of the other moving unit is automatically adjusted. Therefore, by providing the pair of stoppers, it is possible to regulate the stop position of the slide in both the one direction and the opposite direction for each of the pair of moving parts. The adjustment work can be performed from one side of the apparatus, and thus the work is easy to perform.

Further, since the stopper is disposed substantially coaxially with the piston, it is possible to prevent a large moment from acting on the linear guide mechanism when the moving portion comes into contact with the stopper. . Therefore, it is possible to prevent a large load from being applied to the linear guide mechanism due to the moment, thereby improving the durability of the linear guide mechanism.

Further, since the moving portion comes into contact with the end surface of the stopper at its end surface, they come into surface contact with each other. Therefore, the contact portion between the moving portion and the stopper can be prevented from being worn or plastically deformed at an early stage, whereby the initial stop position can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a plan view of a synchronous moving device according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is a sectional view taken along line AA in FIG. 2;

FIG. 5 is a sectional view taken along line BB in FIG. 2;

FIG. 6 is a cross-sectional view of a synchronous moving device according to a conventional example.

FIG. 7 is a sectional view of a synchronous moving device according to another conventional example.

FIG. 8 is a sectional view of a synchronous moving device according to another conventional example.

FIG. 9 is a sectional view of a synchronous moving device according to another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed part 1a Upper surface 1b Groove part 1c Convex part 1d Cam accommodating part 1e Lower surface 1f Mounting groove 1g Beam part 2 Fixed part main body 3,4 Side plate 3a, 3b Hole 5,6 Moving part 5a, 6a Recess 5b, 6b Cylinder chamber 5c , 6c, 20a, 20b, 21a, 21b End face 7,8 Linear guide mechanism 9,10 Piston 9a, 10a Through hole 11,12 Piping port 13,14 Piston seal 15 Synchronous mechanism 16 Cam 16a Flat surface 16b Outer peripheral surface 16c, 16d, 18, 19 engaging portion 17 retaining ring for hole 20, 21 stopper 22, 23 nut

Claims (1)

[Claims] 1. A pair of pistons (9) and (10) provided parallel to each other on a fixed portion (1), and said piston (9)
Cylinder chamber (5b) (6) into which (10) is slidably inserted.
b) a pair of moving parts (5) and (6), and a linear guide mechanism (7) (8) connecting the fixed part (1) and the moving parts (5) and (6) so as to be relatively displaceable. A synchronizing mechanism (1) that, when one of the moving parts (5) (6) is slid in one direction by the supply of fluid pressure, the other moving part (6) is driven in the opposite direction. 15) and the movable part (5) which is attached to the fixed part (1) so as to be adjustable toward the movable parts (5) and (6).
(6) has a pair of stoppers (20) and (21) that come into contact when sliding in one direction, and the stoppers (20) and (21) are connected to the piston (9).
The moving parts (5) and (6) are arranged substantially coaxially with respect to (10), and the end faces (20a) and (21) of the stoppers (20) and (21) are held at their end faces (5c) and (6c).
a) a synchronous moving device, which is brought into contact with a).