JP3743467B2 - Synchronous mobile device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synchronous movement device used for an automatic assembly machine or the like. The synchronous moving device of the present invention is a device that mounts, for example, a tool on a moving part that is a component thereof, and performs work such as workpiece escapement, handling, or centering.
[0002]
[Prior art]
Conventionally, a synchronous moving apparatus shown in FIGS. 6 to 9 is known as a synchronous moving apparatus having a function of adjusting a slide stop position of a moving unit.
[0003]
That is, first, in the apparatus of FIG. 6, the piston 52 slidably inserted in the fixed portion 51 slides the pair of moving portions 55 and 56 arranged in series through the levers 53 and 54 in opposite directions. And a stopper 57 that restricts the retracted end position (upward end position in the figure) of the piston 52, thereby stopping the sliding of the pair of moving parts 55 and 56 toward each other. The position is restricted.
[0004]
Similarly, in the apparatus of FIG. 7, the piston 52 slidably inserted in the fixing portion 51 slides the pair of moving portions 55 and 56 arranged in series in opposite directions via the levers 53 and 54. A stopper 58 that restricts the forward end position (the lower end position in the figure) of the piston 52 is provided as a synchronous movement device, whereby the slide stop position in the direction in which the pair of moving portions 55 and 56 are separated from each other. Is regulated.
[0005]
Similarly, in the apparatus of FIG. 8, the piston 52 slidably inserted in the fixed portion 51 slides the pair of moving portions 55 and 56 arranged in series in opposite directions via the levers 53 and 54. It is a synchronous movement apparatus, Comprising: Tools 59 and 60 are attached to a pair of moving parts 55 and 56, respectively, and this tool 59 and 60 is equipped with the stopper 61, Thereby, a pair of moving parts 55 and 56 adjoin each other. The stop position of the slide in the direction is regulated.
[0006]
Similarly, in the apparatus of FIG. 9, the piston 52 slidably inserted into the fixed portion 51 slides the pair of moving portions 55 and 56 arranged in series in opposite directions via the levers 53 and 54. In the synchronous movement device, the tools 59 and 60 are attached to the pair of moving parts 55 and 56, respectively, and the stoppers 62 are provided on the tools 59 and 60, whereby the pair of moving parts 55 and 56 are separated from each other. The stop position of the slide in the direction is regulated.
[0007]
However, since the stoppers 57 and 58 are arranged coaxially with the piston 51 in the devices of FIGS. 6 and 7, respectively, whether the pair of moving parts 55 and 56 is in a direction approaching or separating from each other. There is a disadvantage that only the stop position in one direction can be adjusted.
[0008]
In addition to this, in the apparatus of FIG. 8 or FIG. 9, when the tool 59 and the stoppers 60 and 61 come into contact with each other, a relatively large moment is applied to the linear guide mechanisms 55a and 56a of the moving parts 55 and 56, respectively. Therefore, there is a disadvantage that this moment adversely affects the life of the linear guide mechanisms 55a and 56a.
[0009]
Further, Japanese Patent Laid-Open No. 1-146629 discloses a synchronous moving device in which a rack slidably inserted in a fixed portion slides a pair of moving portions arranged in parallel in opposite directions via a pinion gear. In this apparatus, the pair of moving parts are stopped by bringing a pressing tool that swings integrally with the pinion gear into contact with a stopper screwed into the body.
[0010]
However, according to this apparatus, since the pressing tool and the stopper are in contact with each other by line contact, the contact portion is worn or plastically deformed at an early stage, thereby causing a disadvantage that the stop position of the moving part is changed at an early stage.
[0011]
[Problems to be solved by the invention]
In view of the above points, the present invention can regulate the stop position of the slide in both one direction and the opposite direction for each of the pair of moving parts, and guides the slide of each moving part. It is possible to provide a synchronous moving device having a stop position adjusting function capable of preventing a large moment from being applied to the motor and further maintaining an initial stop position over a long period of time. Objective.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a synchronous movement device of the present invention includes a pair of pistons fixed to one side plate (3) of a fixed portion and provided in parallel to each other, and a cylinder chamber into which the pistons are slidably inserted. A pair of moving parts provided, a linear guide mechanism in which the fixed part and the moving part are connected so as to be relatively displaceable, and one of the moving parts is slid in one direction by supplying fluid pressure A synchronization mechanism that moves the other moving portion in the opposite direction, and a fixing portion (1) that is attached to the fixing portion so as to be capable of advancing and retreating toward the moving portion and that contacts when the moving portion slides in one direction. And a pair of stoppers screwed to the other side plate (4), the stoppers are arranged coaxially with the piston, and the moving part is brought into contact with the end surface of the stopper at its end surface. thing It was.
[0013]
In the synchronous moving device of the present invention having the above-described configuration, since the pair of moving parts are connected to each other via the synchronizing mechanism, one moving part comes into contact with the stopper and slides in one direction. Simultaneously with the stop, the slide toward the opposite direction of the other moving part is stopped. Therefore, if the stop position of the slide toward one direction of one moving part is adjusted, the stop position of the slide toward the opposite direction of the other moving part is automatically adjusted.
[0014]
In order to stop is disposed coaxially against the piston, when the moving portion and the stopper is in contact, large moment to the linear guide mechanism can be prevented from acting.
[0015]
Further, since each moving part comes into contact with the end face of the stopper at its end face, it is possible to ensure surface contact, thereby preventing the contact part from being worn or plastically deformed at an early stage.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0017]
1 shows a plan view of the synchronous movement apparatus according to the embodiment, FIG. 2 is a front view of the apparatus, FIG. 3 is a bottom view, FIG. 4 is a cross-sectional view taken along line AA in FIG. It is the BB sectional view taken on the line in FIG.
[0018]
The synchronous movement apparatus according to the embodiment first includes a fixed portion 1 in which side plates 3 and 4 are fixed to both ends in the longitudinal direction of the fixed portion main body 2. , 6 are arranged to slide parallel to each other.
[0019]
The moving parts 5 and 6 are linearly slid along the longitudinal direction of the fixed part 1 by the linear guide mechanisms 7 and 8, respectively. The linear guide mechanisms 7 and 8 are respectively in the longitudinal direction on the upper surface 1a of the fixed part 1. A groove 1b provided along the projection, a convex portion (also referred to as a guide rail portion) 1c provided along the longitudinal direction of each side wall of the groove 1b, and a slidable engagement with the convex 1c. Are provided with recesses 5a and 6a provided in the moving parts 5 and 6, respectively. The convex portion 1c and the concave portions 5a and 6a have a substantially triangular cross section so as to correspond to each other. The groove portion 1 b and the convex portion 1 c are provided over the entire length of the fixed portion main body 2, and the concave portions 5 a and 6 a are provided over the entire length of the moving portions 5 and 6.
[0020]
A pair of pistons 9, 10 are fixed to one side plate 3 toward the other side plate 4, and one piston 9 is slidably inserted into a cylinder chamber 5 b provided in one moving portion 5. The other piston 10 is slidably inserted into a cylinder chamber 6b provided in the other moving part 6.
[0021]
One end of each of the pistons 9 and 10 is inserted into holes 3 a and 3 b provided in one side plate 3, and piping ports 11 and 12 are provided at the one end. Further, through holes 9a and 10a are provided in the pistons 9 and 10 so that compressed air as an operating pressure can be supplied from the piping ports 11 and 12 to the cylinder chambers 5b and 6b. Piston seals 13 and 14 are provided on the outer circumferences of the pistons 9 and 10 so that the supplied compressed air does not leak to the outside.
[0022]
As shown in FIG. 4, a cam housing space 1 d is provided in the fixed portion 1, and a cam 16 that is a component part of the synchronization mechanism 15 is rotatably housed in the cam housing space 1 d.
[0023]
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 accommodated. As shown in FIG. 3, the cam housing space 1d is opened on the lower surface 1e of the fixed portion 1, and an annular mounting groove 1f is provided on the periphery of the opening so that the cam 16 does not fall out from the lower surface opening. Here, a retaining ring 17 for a hole is fitted. The cam housing space 1d communicates with the groove 1b within the range of the circular plane.
[0024]
With the above configuration, the cam 16 is rotatably supported by the fixed portion 1 by sliding the flat surface 16a and the outer peripheral surface 16b against the inner wall of the cam housing portion 1d. In this case, the inner wall of the cam housing portion 1d is Specifically, the inner circumferential wall of the cam housing portion 1d, the lower surface of the beam portion 1g between the pair of groove portions 1b, and the upper surface of the retaining ring 17 are referred to.
[0025]
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 protrude into the cam housing portion 1d. The engaging portions 18 and 19 are respectively connected to the cam 16. A pair of long groove-like engaging portions (also referred to as cam grooves) 16c and 16d provided are engaged. Therefore, for example, in FIG. 1, when the moving part 5 on the upper and lower sides in the figure moves in the right direction, the cam 16 rotates counterclockwise and the upper moving part 6 is driven in the left direction. When the camera moves in the right direction, the cam 16 rotates clockwise and the lower moving unit 5 follows in the left direction. In addition, although the illustrated engaging portions 16c and 16d have a long groove shape, a hole shape or a notch shape may be used instead.
[0026]
A pair of screw holes (not shown) are provided in parallel to each other on the right side plate (also referred to as an adjustment base) 4 in FIG. 1, and a pair of stoppers 20 and 21 are parallel to each other and one side plate. 3 and is fixed by fixing nuts 22 and 23 after the fixing position is adjusted by adjusting the screwing amount.
[0027]
Each of the stoppers 20 and 21 has a male screw or bolt shape, and both end surfaces 20a, 20b, 21a, and 21b are formed in a planar shape orthogonal to the central axis thereof, and the end surface 20a on the moving parts 5 and 6 side. , 21a are in contact with the end surfaces 5c, 6c of the moving parts 5, 6 in a surface contact state. The one stopper 20 is disposed coaxially against the one piston 9, other stopper 21 is disposed coaxially against the other piston 10.
[0028]
Next, the operation of the synchronous movement apparatus having the above configuration will be described.
[0029]
Each of the drawings shows a state in which compressed air is not supplied to the apparatus, and the moving units 5 and 6 are respectively located at the center of the stroke.
[0030]
First, from this state, when the compressed air supplied from one piping port 11 is filled into one cylinder chamber 5b through the through hole 9a, one moving portion 5 is pressed by the compressed air, and the linear guide mechanism 7 It moves while being guided, and stops by abutting against one stopper 20. At this time, since the pin-shaped engaging portions 18 and 19 projecting from the moving portions 5 and 6 are engaged with the long groove-shaped engaging portions 16c and 16d provided on the cam 16, the cam 16 And the other moving part 6 moves while being guided by the linear guide mechanism 8 in the opposite direction, and at the same time the one moving part 5 stops.
[0031]
Next, when the compressed air filled in one cylinder chamber 5b is discharged and the compressed air supplied from the other piping port 12 is filled into the other cylinder chamber 6b through the through hole 10a, the other moving part is obtained. 6 is pressed by the compressed air, moves while being guided by the linear guide mechanism 8, contacts the other stopper 21 and stops. At this time, the pin-like engaging portions 18 and 19 projecting from the moving portions 5 and 6 are engaged with the long groove-like engaging portions 16c and 16d provided on the cam 16, respectively. In accordance with this, one moving part 5 moves while being guided by the linear guide mechanism 7 in the opposite direction, and at the same time as the other moving part 6 stops.
[0032]
Therefore, by alternately repeating supply and discharge of compressed air in this way, the pair of moving parts 5 and 6 reciprocate in opposite directions, that is, move synchronously in opposite directions.
[0033]
In the synchronous moving device having the above-described configuration, the pair of moving parts 5 and 6 are connected to each other via the synchronizing mechanism 15 provided with the cam 16, so that one moving part 5 is one stopper 20. At the same time, the slide toward one direction stops, and at the same time, the slide toward the opposite direction of the other moving portion 6 stops. Therefore, by adjusting the slide stop position in one direction of one moving part 5, the slide stop position in the opposite direction of the other moving part 6 is automatically adjusted. On the other hand, the other moving portion 6 comes into contact with the other stopper 21 and the sliding toward one direction stops, and at the same time, the sliding toward the opposite direction of one moving portion 5 stops. . Therefore, by adjusting the slide stop position in one direction of the other moving unit 6, the slide stop position in the opposite direction of the one moving unit 5 is automatically adjusted. Therefore, the provision of the pair of stoppers 20 and 21 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.
[0034]
In order to pair of stoppers 20 and 21 are coaxially disposed against the piston 9 and 10 respectively, the linear guide mechanism 7, 8 when the mobile unit 5, 6 and the stopper 20, 21 are in contact with It is possible to prevent a large moment from acting. Therefore, it is possible to prevent the linear guide mechanisms 7 and 8 from being subjected to a large load due to a moment, and thus the durability of the linear guide mechanisms 7 and 8 can be improved.
[0035]
Moreover, since each moving part 5 and 6 contacts the end surfaces 20a and 21a of the stoppers 20 and 21 by the end surfaces 5c and 6c at the time of sliding, these contact | abut by surface contact. Therefore, it is possible to prevent the contact portion between the moving parts 5 and 6 and the stoppers 20 and 21 from being worn or plastically deformed at an early stage, thereby maintaining the initial stop position for a long period of time. .
[0036]
The fixed portion 1 is provided with a disc-shaped cam accommodating portion 1d that rotatably accommodates a disc-shaped cam 16, and the cam 16 is capable of slidingly contacting the flat surface 16a and the outer peripheral surface 16b with the inner wall of the cam accommodating portion 1d. As a result, the apparatus can be rotatably supported by the fixed portion 1, so that not only the apparatus can be downsized in the height direction, but also the accuracy of the automatic assembly machine can be improved, and the tact time can be shortened. As a result, productivity can be improved.
[0037]
【The invention's effect】
The present invention has the following effects.
[0038]
That is, in the synchronous moving apparatus of the present invention having the above-described configuration, since the pair of moving parts are connected to each other via the synchronizing mechanism, one moving part comes into contact with the stopper and faces in one direction. At the same time as all the slides stop, the slide toward the opposite direction of the other moving part stops. Therefore, by adjusting the slide stop position in one direction of one moving part, the slide stop position in the opposite direction of the other moving part is automatically adjusted. Therefore, by providing the pair of stoppers, the stop position of the slide in both the one direction and the opposite direction can be regulated for each of the pair of moving parts. The adjustment work can be performed from one side of the apparatus, and therefore the work is easy to perform.
[0039]
In order to stop is disposed coaxially against the piston, it is possible to prevent the acts large moment in a linear guide mechanism when the moving portion and the stopper is in contact. Therefore, it is possible to prevent a large load from being applied to the linear guide mechanism due to a moment, thereby improving the durability of the linear guide mechanism.
[0040]
Further, since the moving part comes into contact with the end face of the stopper at its end face, these come into contact with each other by surface contact. Therefore, it is possible to prevent the contact portion between the moving portion and the stopper from being worn out or plastically deformed at an early stage, and thereby the initial stop position can be maintained over a long period.
[Brief description of the drawings]
FIG. 1 is a plan view of a synchronous movement device according to an embodiment of the present invention. FIG. 2 is a front view thereof. FIG. 3 is a bottom view. FIG. 6 is a 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 synchronous moving device according to another conventional example. FIG. 9 is a sectional view of a synchronous moving apparatus according to another conventional example.
DESCRIPTION OF SYMBOLS 1 Fixed part 1a Upper surface 1b Groove part 1c Projection 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 part 5, 6 Moving part 5a, 6a Recessed part 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 Synchronizing mechanism 16 Cam 16a Plane 16b Outer surface 16c, 16d, 18, 19 Engagement part 17 Retaining ring for hole 20, 21 Stopper 22, 23 Nut

Claims (1)

A pair of pistons (9) and (10) fixed to one side plate (3) of the fixing portion (1) and provided in parallel with each other, and a cylinder chamber (slidably inserted into the pistons (9) and (10)) A linear guide mechanism (7) (5b) (6b) and a linear guide mechanism (7) (6) connected to the fixed part (1) and the moving parts (5) (6) so as to be relatively displaceable. 8) and when one of the moving parts (5) and (6) is slid in one direction by supplying fluid pressure, the other moving part (6) is driven in the opposite direction. The synchronization mechanism (15) and the fixed portion (1) are attached to the moving portions (5) and (6) so as to be able to advance and retreat, and the moving portions (5) and (6) slide in one direction. A pair of stoppers (20) that are screwed to the other side plate (4) of the abutting fixing part (1) ( 1) and has a,
The stoppers (20) and (21) are arranged coaxially with respect to the pistons (9) and (10),
The synchronous moving device, wherein the moving parts (5) and (6) are brought into contact with the end surfaces (20a) and (21a) of the stoppers (20) and (21) at their end surfaces (5c) and (6c).

Images