JP3690433B2 - Slide cylinder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide cylinder. More specifically, the present invention relates to a slide cylinder disposed in a vertical direction so that a moving portion that is relatively displaced with respect to a fixed portion by supplying compressed air is relatively displaced in the vertical direction. In addition, an end lock that locks the moving part so that the moving part does not fall unexpectedly due to its own weight, etc., even if the pressure of the compressed air drops for some reason with the moving part located at the upper end position of the movement. The present invention relates to a slide cylinder provided with a device.
[0002]
[Prior art]
Conventionally, a fixed part provided with a cylinder and a moving part connected to the fixed part via a guide member so as to be capable of relative displacement are provided, and compressed air is supplied to the cylinder to make the moving part relative to the fixed part. A slide cylinder to be displaced has been proposed. In this type of slide cylinder, for example, a member such as an air chuck (hereinafter simply referred to as an air chuck) is connected to a moving portion, and a workpiece is held by the air chuck and conveyed. It is used as a means to
[0003]
However, when the slide cylinder is arranged in the vertical direction so that the moving part is relatively displaced in the vertical direction, the compressed air pressure is abnormal in the piping, etc. with the moving part positioned at the moving upper end position. If it is lowered for this reason, the moving part unexpectedly falls due to its own weight, etc., and therefore, the work, the air chuck or the slide cylinder may be damaged due to the impact at the time of dropping.
[0004]
On the other hand, a slide cylinder provided with an end lock device has been proposed as shown in FIG. 39. In this end lock device, a bracket 51 provided with a guide inclined surface 52 and an engagement hole 53 slides. A pin-like engaging portion 57 that is fixedly provided on one end member 55 of the fixing portion 54 of the cylinder and that is guided by the guide inclined surface 52 and removably engages with the engaging hole 53 is provided. The lock cylinder mechanism 56 is integrally incorporated in the table 59 of the moving part 58 of the slide cylinder (see Japanese Utility Model Laid-Open No. 64-29512).
[0005]
However, according to this prior art, the lock cylinder mechanism 56 provided with the pin-shaped engaging portion 57 is integrally incorporated in the table 59 of the moving portion 58 of the slide cylinder, and the lock cylinder is within the wall thickness of the table 59. This end-locking device cannot be retrofitted to an existing slide cylinder because it has to be formed with a punch.
[0006]
[Problems to be solved by the invention]
In view of the above points, the present invention provides a moving unit when the slide cylinder is arranged in the vertical direction so that the moving unit that moves relative to the fixed unit by supplying compressed air moves in the vertical direction. Even if the pressure of the compressed air drops for some reason while it is positioned at the upper end of the moving position, it is possible to prevent the moving part from falling unexpectedly due to its own weight, etc. The purpose of the present invention is to provide a slide cylinder that can be retrofitted with an end-lock device with little change to the existing slide cylinder even if it is necessary to add an end-lock device later (afterwards) due to modifications, etc. To do.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a slite cylinder according to claim 1 of the present invention is a slide cylinder that supplies compressed air to a cylinder provided in a fixed portion to displace the moving portion relative to the fixed portion, A stopper mechanism comprising a combination of an adjusting block and a stopper for adjusting the movement end position of the moving part, and a lock cylinder device comprising a lock cylinder body and a lock block for preventing the moving part from falling. The lock block includes a guide inclined surface and an engagement hole, and the lock cylinder body is guided by the guide inclined surface and retreats, and engages with the engagement hole in a detachable manner. A lock piston provided with a portion, and the engagement portion is engaged with the engagement hole by a biasing force of a spring means to supply compressed air. The adjustment block of the former stopper mechanism and the lock cylinder body of the latter lock cylinder device are detachably attached to the side surface of the fixed portion, and the stopper of the former stopper mechanism is the side surface of the moving portion. The lock block of the latter lock cylinder device is integrally formed on the surface opposite to the stopper operating surface of the stopper of the former stopper mechanism .
[0011]
[Action]
In the slide cylinder according to the first aspect of the present invention having the above-described configuration, the lock block provided with the guide inclined surface and the engagement hole is detachably provided on the side surface of the moving portion, and is retracted by being guided by the guide inclined surface. In addition, a lock piston provided with an engagement portion that is detachably engaged with the engagement hole is engaged. The engagement portion is engaged with the engagement hole by the biasing force of the spring means, and the engagement is released by supplying compressed air. Since the lock cylinder device to be attached is detachably provided on the side surface of the fixed portion, the end lock device including the lock block and the lock cylinder device can be easily retrofitted to the existing slide cylinder. .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
In the slide cylinder of the present invention, the relative displacement of the moving part is performed by supplying compressed air, and the unlocking of the end lock device is also performed by supplying compressed air, so the supply source of compressed air can be shared by both. It is.
[0016]
【Example】
Next, embodiments of the present invention will be described with reference to the drawings.
[0017]
As described above, the end lock device is a combination of a lock block and a lock cylinder device. First, an example of a slide cylinder without the end lock device is shown in FIGS.
[0018]
A cylinder 3 is provided inside a box-shaped body 2 constituting the fixed portion 1, and a pair of pistons 4 and 5 slidably inserted into a cavity define a pair of cylinder chambers 6 and 7. ing. Both ends of the cavity are closed by end covers 8 and 9, respectively. A first piping port 10 that communicates with one cylinder chamber 6 and supplies compressed air to the cylinder chamber 6 is provided on one side surface 2 a of the body 2, and one cylinder is also provided on the side surface 2 b on the opposite side of the body 2. A second piping port 11 that communicates with the chamber 6 and supplies compressed air to the cylinder chamber 6 is provided symmetrically. Either one of the first and second piping ports 10, 11 is selectively used, and the port that is not used (second piping port 11 in the example in the figure) is closed by a plug 12. A third piping port 13 is provided on one side surface 2 a of the body 2 to communicate with the other cylinder chamber 7 and supplies compressed air to the cylinder chamber 7, and the other cylinder is also provided on the side surface 2 b on the opposite side of the body 2. A fourth piping port 14 that communicates with the chamber 7 and supplies compressed air to the cylinder chamber 7 is provided symmetrically. Any one of the third and fourth piping ports 13, 14 is selectively used, and the unused port (fourth piping port 14 in the example in the figure) is closed by a plug 15. A plurality of component mounting taps 16 are provided on both side surfaces 2a and 2b of the body 2, respectively.
[0019]
A convex rail portion 17 is provided on one surface of the body 2 in parallel with the cylinder 3 so that the table 19 of the moving portion 18 having a substantially U shape when viewed from the direction of FIG. 3 or 6 straddles the rail portion 17. Has been placed. Linear track grooves (not shown) are provided in parallel to the cylinder 3 on both side surfaces of the rail portion 17 and the inner surface of the table 19 facing the rail portion 17, and a number of ball-shaped guide members (including rolling elements) are provided in the grooves. The table 19 is linearly and relatively combined with the body 2 through the guide member. A pin-shaped connecting member 20 is sandwiched between the pair of pistons 4, 5, and the distal end portion of the connecting member 20 protrudes outside the body 2 and is connected to the table 19. The hole (not shown) for inserting the connecting member 20 provided in the body 2 is a long hole in a direction parallel to the cylinder 3 to allow the connecting member 20 to move according to the pistons 4 and 5. As a result, the space 21 between the pair of pistons 4 and 5 is opened to the atmosphere.
[0020]
A mounting rail 22 is screwed to the outside of one side surface 2a of the body 2, and a pair of magnetic detection switches 23 and 24 for magnetically detecting the position of the table 19 are attached to the mounting rail 22. A permanent magnet 25 is attached to the side surface of the table 19. An adjustment block 26 is screwed to a part of the taps 16 on the outside of the side surface 2 b opposite to the body 2, and a shock absorber 27 is attached to the adjustment block 26. Further, a box-shaped stopper 28 is screwed to the outside of the side surface of the table 19 on the side of the adjustment block 26. The movement in this direction of the moving portion 18 composed of the stopper 28, the table 19, the connecting member 20, and the pistons 4 and 5 is stopped. The movement end position restricting function by the stopper 28, the adjusting block 26 and the shock absorber 27 corrects the same function by the long hole with respect to its stroke.
[0021]
The stopper 28 and the adjustment block 26 can be easily removed when the movement end position adjustment of the moving part 18 is not necessary. If the shock absorbing function is unnecessary, a metal bolt or a bolt having a shock absorbing rubber at the tip may be attached to the adjustment block 26 instead of the shock absorber 27. Further, it is also possible to adjust the movement end positions on both sides by additionally attaching the second adjustment block 26 to another tap 16 provided on the body 2.
[0022]
Next, other examples of the slide cylinder without an end lock device are shown in FIGS.
[0023]
A cylinder 3 is provided inside a box-shaped body 2 constituting the fixed portion 1, and a piston 4 slidably inserted into the cavity defines a pair of cylinder chambers 6, 7. Both ends of the cavity are closed by the end cover 8 or the rod cover 29, respectively. A first piping port 10 that communicates with one cylinder chamber 6 and supplies compressed air to the cylinder chamber 6 is provided on one side surface 2 a of the body 2, and one cylinder is also provided on the side surface 2 b on the opposite side of the body 2. A second piping port 11 that communicates with the chamber 6 and supplies compressed air to the cylinder chamber 6 is provided symmetrically. Either one of the first and second piping ports 10, 11 is selectively used, and the port that is not used (second piping port 11 in the example in the figure) is closed by a plug 12. A third piping port 13 is provided on one side surface 2 a of the body 2 to communicate with the other cylinder chamber 7 and supplies compressed air to the cylinder chamber 7, and the other cylinder is also provided on the side surface 2 b on the opposite side of the body 2. A fourth piping port 14 that communicates with the chamber 7 and supplies compressed air to the cylinder chamber 7 is provided symmetrically. Any one of the third and fourth piping ports 13 and 14 is selectively used, and the unused port (fourth piping port 14 in the example in the figure) includes a seal member 30 described later. It is blocked by the adjustment block 26. A plurality of component mounting taps 16 are provided on both side surfaces 2a and 2b of the body 2, respectively.
[0024]
A convex rail portion 17 is provided on one surface of the body 2 in parallel with the cylinder 3, and a table 19 of a moving portion 18 having a substantially U-shape when viewed from the direction of FIG. 9 is disposed so as to straddle the rail portion 17. Yes. Linear track grooves (not shown) are provided in parallel to the cylinder 3 on both side surfaces of the rail portion 17 and the inner surface of the table 19 facing the rail portion 17, and a number of ball-shaped guide members (including rolling elements) are provided in the grooves. The table 19 is linearly and relatively combined with the body 2 through the guide member. One end of a rod 31 is connected to the piston 4, and the other end of the rod 31 penetrates the rod cover 29 and protrudes to the outside of the body 2, and is connected to the table 19 via a tip plate 32.
[0025]
A mounting rail 22 is screwed to the outside of one side surface 2a of the body 2, and a pair of magnetic detection switches 23 and 24 for magnetically detecting the position of the table 19 are attached to the rail 22, correspondingly. A permanent magnet 25 is attached to the side surface of the table 19. Further, an adjustment block 26 provided with a seal member 30 on the outside of the side surface 2b opposite to the body 2 is screwed to a part of the taps 16, and a shock absorber 27 is attached to the adjustment block 26. Further, a substantially box-shaped stopper 28 is screwed to the outside of the side face of the table 19 on the side of the adjustment block 26. 27, the movement of the moving portion 18 composed of the stopper 28, the table 19, the tip plate 32, the rod 31, and the piston 4 in this direction is stopped.
[0026]
The stopper 28 and the adjustment block 26 can be easily removed when the movement end position adjustment of the moving part 18 is not necessary. If the shock absorbing function is unnecessary, a metal bolt or a bolt having a shock absorbing rubber at the tip may be attached to the adjustment block 26 instead of the shock absorber 27. Further, it is also possible to adjust the movement end positions on both sides by additionally attaching the second adjustment block 26 to another tap 16 provided on the body 2.
[0027]
Next, an example of an end lock device mounted on the above-described slide cylinder is shown in FIGS. 13 and 14, and an example of a slide cylinder with this type of end lock device attached is shown in FIGS. Another example of the slide cylinder with the same type of end lock device attached thereto is shown in FIGS.
[0028]
The lock block 35 is provided in the form of an arm as a part of the stopper 28 on the moving portion 18 side. The arm-shaped lock block 35 is provided with an engagement hole 36 having a through-hole shape or a recess shape, A guide inclined surface 37 provided on the distal end side is provided. In the lock cylinder main body 39 of the lock cylinder device 38, a recess 40 whose opening is directed to the lock block 35, a breathing hole 41 communicating from the bottom surface of the recess 40 to the outside, and a surface that contacts the body 2 of the fixed portion 1. A housing 42 in which the seal member 43 is mounted and a flow path 44 communicating from the housing 42 to the recess 40 are provided, and a spring means 45, a lock piston 46, and a bearing 47 are sequentially arranged in the recess 40 from the bottom side. ing. An engaging portion 48 that is a cylindrical body with a reduced diameter is integrally provided at the tip of the lock piston 46. The bearing 47 is fixed to the recess 40, a hole is formed in the shaft core thereof, and the engaging portion 48 penetrates and protrudes to the outside.
[0029]
In the mounted state shown in FIG. 15 and subsequent figures, the lock cylinder device 38 having the above-described configuration is screwed to a part of the taps 16 on the outer side of the side surface 2b on the opposite side of the body 2. Prior to this screwing, the plug 12 that had closed the second piping port 11 was removed, and the outer circumference was removed from the first piping port 10 by one cylinder chamber 6, the second piping port 11, and the seal member 43. The lock piston 46 is displaced when the compressed air is supplied through the sealed housing 42 and the flow path 44, and the engaging portion 48 is retracted from the state shown in FIG. 13 to the state shown in FIG. A pressure introduction path is configured.
[0030]
The engaging portion 48 is pushed by the spring means 45 and normally has its tip protruding outside the lock cylinder body 39, and is compressed air from the first piping port 10 into the lock cylinder device 38 via the above path. Is supplied, the lock piston 46 moves downward from the state of FIG. 13 against the elasticity of the spring means 45 and the engaging portion 48 is retracted. When the compressed air supplied into the lock cylinder device 38 is discharged, the lock piston 46 moves upward from the state of FIG. 14 by the elasticity of the spring means 45, and the engaging portion 48 is projected. Therefore, when the lock block 35 moves from the left side of FIG. 13 according to the moving part 18 in a state where the engaging part 48 protrudes, the engaging part 48 is pushed by the guide inclined surface 37 of the lock block 35. When the engagement hole 36 is positioned directly above, it automatically protrudes by the urging force of the spring means 45 and engages with the engagement hole 36. 18 relative displacements are limited. Accordingly, by arranging the slide cylinder so that the direction of the relative displacement of the moving unit 18 is upward and the lock operating position is the moving upper end position, the compressed air is moved with the moving unit 18 positioned at the moving upper end position. Even if the pressure decreases for some reason, the end lock device is locked, so that the moving part 18 can be prevented from unexpectedly dropping due to its own weight or the like. Also, when releasing the lock, compressed air is supplied into the lock cylinder device 38 as described above, but it is manually released by pressing the tip of the engaging portion 48 with a needle-like jig or the like. Is also possible. Further, since the compressed air supplied to the first piping port 10 is introduced into the lock cylinder device 38 via the one cylinder chamber 6, the moving unit 18 starts to descend from the moving upper end position. Each time the end lock device is unlocked, the lock is applied each time the moving unit 18 moves up and reaches the upper end position. In addition, since the first piping port 10 can be used in common for both the cylinder 3 of the fixed portion 1 and the end lock device, it is necessary to newly increase the piping even if an end lock device is provided. There is no.
[0031]
Next, an example of a slide cylinder with an end lock device according to another example is shown in FIGS. 27 to 32, and another example of a slide cylinder with an end lock device of the same type is shown in FIG. It is shown in FIG.
[0032]
That is, this end block device is different from the above-described end block devices of FIGS. 13 and 14 in that a piping port 49 is newly provided in the lock cylinder body 39 of the lock cylinder device 38 together with other components. Compressed air is introduced from the piping port 49 into the lock cylinder device 38 through the flow path 44 to displace the lock piston 46 and release the engagement of the engagement portion 48 with respect to the engagement hole 36. Compressed air is introduced from the piping port 49 into the one cylinder chamber 6 through the flow path 44, the housing 42, and the second piping port 11 to displace the piston 4, and the moving portion 18 is relatively displaced. There is in point. In addition, a piping port 50 is newly provided in the adjustment block 26 so that the piping can be completed on the same side surface 2 b of the body 2, and the other cylinder chamber 7 is connected from the piping port 50 through the fourth piping port 14. Compressed air is introduced into the. Since the first and third piping ports 10 and 13 are not used, they are blocked by the plugs 12 and 15.
[0033]
【The invention's effect】
The present invention has the following effects.
[0034]
That is, first, in the slide cylinder according to claim 1 of the present invention having the above-described configuration, the slide cylinder is moved in the vertical direction so that the moving portion that moves relative to the fixed portion by the supply of compressed air moves in the vertical direction. Even when the pressure of the compressed air drops for some reason while the moving part is positioned at the moving upper end position, the moving part is prevented from unexpectedly dropping due to its own weight, etc. be able to. Therefore, it is possible to prevent the workpiece, the air chuck or the slide cylinder from being damaged by this unexpected drop. At the same time, when an end lock device needs to be added later (afterwards) due to a change in equipment specifications or modification, the end lock device can be retrofitted with almost no change to the existing slide cylinder.
In the slide cylinder according to claim 1 of the present invention, the adjustment block of the stopper mechanism and the lock cylinder body of the lock cylinder device are detachably attached to the side surface of the fixed portion, and the stopper of the stopper mechanism is attached to and detached from the side surface of the moving portion. Since the lock block of the lock cylinder device is integrally formed on the surface of the stopper mechanism that is opposite to the stopper operating surface, only one stopper is attached to the moving part. Two components (stopper) and one component (lock block) of the lock cylinder device can be simultaneously attached to the moving part. In addition, since the stopper operating surface and the lock block are provided on both the front and back sides of the stopper and are arranged coaxially, the occupied sectional area seen from the moving part stroke direction can be set small, and the device can be downsized. can do.
[Brief description of the drawings]
FIG. 1 is a front view showing a state before an end lock device is mounted on a slide cylinder according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram of the internal structure. FIG. 3 is a plan view. FIG. 5 is a right side view thereof. FIG. 6 is a bottom view of the slide cylinder according to the second embodiment of the present invention. FIG. 8 is a front view showing a state before the end lock device is mounted. FIG. 9 is a plan view thereof. FIG. 10 is a left side view of the same. FIG. 11 is a right side view of the same. FIG. 12 is a bottom view of the end lock device. FIG. 15 is a front view of a slide cylinder according to a first embodiment of the present invention. FIG. 16 is an explanatory diagram of the internal structure. FIG. 17 is a plan view of the device. FIG. 19 is a right side view of the same. FIG. 20 is a bottom view of the same. FIG. 21 is a second embodiment of the present invention. Front view of the slide cylinder [FIG. 22] Internal structure explanatory diagram [FIG. 23] Plan view [FIG. 24] Left side view [FIG. 25] Right side view [FIG. 26] Bottom view [FIG. Front view of the slide cylinder according to the third embodiment of the present invention. [FIG. 28] Explanatory drawing of the internal structure. [FIG. 29] Plan view. [FIG. 30] Left view. 33 is a front view of a slide cylinder according to a fourth embodiment of the present invention. FIG. 34 is an explanatory diagram of the internal structure. FIG. 35 is a plan view of the same. FIG. 36 is a left side view of the same. FIG. 38 is a bottom view thereof. FIG. 39 is an explanatory view of an end lock device according to a conventional example.
DESCRIPTION OF SYMBOLS 1 Fixed part 2 Body 2a, 2b Side surface 3 Cylinder 4, 5 Piston 6, 7 Cylinder chamber 8, 9 End cover 10, 11, 13, 14, 49, 50 Piping port 12, 15 Plug 16 Tap 17 Rail part 18 Moving part 19 Table 20 Connecting member 21 Space 22 Mounting rail 23, 24 Magnetic detection switch 25 Permanent magnet 26 Adjust block 27 Shock absorber 28 Stopper 29 Rod cover 30, 43 Seal member 31 Rod 32 End plate 35 Lock block 36 Engagement hole 37 Guide inclination Surface 38 Lock cylinder device 39 Lock cylinder body 40 Recess 41 Breathing hole 42 Housing 44 Flow path 45 Spring means 46 Lock piston 47 Bearing 48 Engagement portion

Claims (1)

A slide cylinder for supplying compressed air to a cylinder (3) provided in the fixed part (1) to displace the moving part (18) relative to the fixed part (1);
A stopper mechanism comprising a combination of an adjustment block (26) and a stopper (28) for adjusting the movement end position of the moving part (18);
A lock cylinder device (38) comprising a combination of a lock cylinder main body (39) and a lock block (35) for preventing the moving part (18) from dropping, the lock block (35) being a guide inclined surface ( 37) and an engagement hole (36), and the lock cylinder body (39) is guided by the guide inclined surface (37) and retracted, and is detachable from the engagement hole (36). A lock piston (46) provided with an engagement portion (48) to be engaged is provided, and the engagement portion (48) is engaged with the engagement hole (36) by the urging force of the spring means (45), and compression is performed. The engagement is released by supplying air,
An adjustment block (26) of the former stopper mechanism and a lock cylinder body (39) of the latter lock cylinder device (38) are detachably attached to the side surface of the fixed portion (1),
The stopper (28) of the former stopper mechanism is detachably attached to the side surface of the moving part (18),
The slide cylinder, wherein the lock block (35) of the latter lock cylinder device (38) is integrally formed on the surface opposite to the stopper operating surface of the stopper (28) of the former stopper mechanism .

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