JP2020159592A - Stroke device - Google Patents

Abstract

To prevent wrenching of an air cylinder functioning as a driving source in a stroke device that supports a supporting object at two positions separated from each other in a longitudinal direction thereof and moves the supporting object in a direction approximately orthogonally crossing the supporting object in the longitudinal direction thereof.SOLUTION: The stroke device that supports a supporting object at two positions separated from each other in a longitudinal direction of the supporting object and moves the supporting object in a first direction approximately orthogonally crossing the supporting object in the longitudinal direction thereof, comprises: a base immovably disposed relative to a specified position of the supporting object; a pair of air cylinders each functioning as a driving source of the movement and each comprising a cylinder and a rod that can be pushed into and pulled out of the cylinder by an air pressure, with the cylinder or the rod being held by the base; a bracket moving relative to the base, with the rod or the cylinder attached thereto; and a pair of coupling structures each coupling the two positions of the supporting object with the bracket respectively, in a manner movable at least by a predetermined distance along a plane including the longitudinal direction and the first direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a stroke device that supports two places of the support object separated in the longitudinal direction and moves the support object in a direction substantially orthogonal to the longitudinal direction.

In recent years, a device called an air knife or the like that blows off a liquid or the like adhering to an object by blowing air strongly has been used (for example, Patent Document 1). Such an air knife is used, for example, in a state where a long air outlet is arranged along the width direction of the strip-shaped sheet hung on the transport roller. In this case, the air knife is arranged so that the longitudinal direction is along the axial direction of the roller, and is substantially orthogonal to the longitudinal direction so that the air knife can be brought close to and retracted from the outer peripheral surface of the roller for convenience when the sheet is hung. It is supported so that it can move in the direction of movement.

As described above, a stroke device that movably supports the air knife has been conventionally used. The stroke device supports two points (both ends or their vicinity) separated in the longitudinal direction of the air knife, and often employs an air cylinder as a drive source for movement. If the air knives are moved in the vicinity of both ends by a pair of air cylinders, the movement timing and speed of each end will be different depending on the drive timing and speed of the air cylinders. When the deviation occurs, the air knife and the air cylinder are tilted, so that the rod tilts with respect to the cylinder and the rod twists inside the cylinder. If the rod twists the cylinder, the rod may get caught in the cylinder and become immovable, or the air cylinder may break down.

The above-mentioned inconvenience is not limited to the case where the support object movably supported by the stroke device is an air knife, and the same applies to the case where the support object is moved by a pair of air cylinders.

Japanese Unexamined Patent Publication No. 2011-23216

The drive timing and speed of the air cylinder can be adjusted so that the pair perform the same operation to some extent, but it becomes necessary to readjust due to changes in the environment around the device. ..

The present invention has been made in view of the above, and is driven in a stroke device that supports two locations apart from each other in the longitudinal direction of the object to be supported and moves the object to be supported in a direction substantially orthogonal to the longitudinal direction. The purpose is to prevent the air cylinder that is the source from being twisted.

In order to solve the above-mentioned problems and achieve the object, the stroke device according to the present invention supports two places separated in the longitudinal direction of the support object, and the support object is substantially orthogonal to the longitudinal direction. The cylinder or the rod is provided with a base which is to be moved in the first direction and is immovably provided with respect to a fixed position of the support object, a cylinder and a rod which is pneumatically moved in and out of the cylinder. A pair of air cylinders that are held by the base and function as a drive source for the movement, a bracket to which the rod or the cylinder is attached and moves with respect to the base, and the bracket to the support object. A connecting structure is provided which connects the two locations so as to be movable by a predetermined dimension or more along a plane including the longitudinal direction and the first direction.

Since the stroke device according to the present invention can absorb the lateral position difference of the supported object due to the deviation of the drive timing and speed of the air cylinder, it has an effect that the air cylinder as the drive source can be prevented from being twisted. ..

It is a figure which shows the schematic structure of the sheet draining apparatus provided with the air knife which concerns on Embodiment 1. It is a figure which shows the positional relationship between the stroke device which concerns on Embodiment 1 and an air knife. It is a figure which shows the positional relationship between the stroke device and the air knife which concerns on Embodiment 1 from another direction. It is a perspective view which shows the appearance of the stroke apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows the appearance of the stroke apparatus which concerns on Embodiment 1 from another direction. It is a figure which shows the state of the stroke apparatus in the retracted position which concerns on Embodiment 1. FIG. It is a figure which shows the connection structure which the stroke device which concerns on Embodiment 1 has. It is a figure explaining the prying of a rod with respect to a cylinder in a conventional stroke device. It is a figure which shows the operation of the stroke apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the state of the stroke apparatus in the operating position which concerns on Embodiment 1. FIG. It is a figure which shows the example of the state of the spacer and the hole of the stroke device in the retracted position which concerns on Embodiment 1. FIG. It is a figure which shows the example of the state of the spacer and the hole of the stroke device when the abutting portion which concerns on Embodiment 1 hits. It is a figure which shows the example of the state of the spacer and the hole of the stroke device in the operating position which concerns on Embodiment 1. FIG. FIG. 5 is a diagram showing a positional relationship between a bolt, a spacer, and a hole according to the first embodiment by comparing (a) when the abutting portion 161 and the abutting portion 162 are in contact with each other and (b) when positioning is completed.

Hereinafter, embodiments of the stroke device according to the present disclosure will be described in detail with reference to the drawings. For convenience of explanation, three axes (coordinate axes) are attached to each figure. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily conceived by those skilled in the art, or those that are substantially the same. It should be noted that the part expressed as substantially orthogonal or substantially parallel corresponds to the possibility that the embodiment slightly deviated from completely orthogonal or parallel is excluded by expressing it as orthogonal or parallel, and is endlessly ambiguous. It is not intended to be.

[Embodiment 1]
<Composition>
FIG. 1 is a diagram showing a schematic structure of a sheet drainage device 300 including the air knife 200 according to the first embodiment. The sheet drainage device 300 includes a plurality of rollers 301 around which the strip-shaped sheet 500 is hung. The air knife 200 is arranged so that the longitudinal direction is along the axis of the roller 301 so as to blow air onto the surface of the sheet 500 hung on the roller 301. Further, the sheet draining device 300 includes a duct 302. The duct 302 collects and discharges the liquid or the like blown off from the surface of the sheet 500 together with the air blown out from the air knife 200.

The sheet drain device 300 includes a stroke device 100 shown in FIGS. 2 and later. The stroke device 100 movably supports the air knife 200 in a direction substantially orthogonal to the longitudinal direction (first direction) so that the air knife 200 can be brought close to and retracted from the outer peripheral surface of the roller 301.

FIG. 2 is a diagram showing the positional relationship between the stroke device 100 and the air knife 200, and FIG. 3 is a diagram showing the positional relationship between the stroke device 100 and the air knife 200 from different directions. More specifically, assuming that the width direction of the sheet 500 and the longitudinal direction of the roller 301 and the air knife 200 are the X-axis directions, FIG. 2 shows a YZ plane and FIG. 3 shows a ZX plane.

The air knife 200 is an example of a support object. When the air knife 200 is in the operating position (fixed position), the air outlet 201 of the air knife 200 is arranged at an appropriate distance and angle with respect to the roller 301.

The stroke device 100 supports two locations (for example, both ends 210) apart from each other in the longitudinal direction of the air knife 200, and moves the air knife 200 in a direction substantially orthogonal to the longitudinal direction (first direction).

Further, the stroke device 100 includes a base 110, a housing 120, a bracket 131, a connecting structure 130, and a pair of air cylinders 140.

The air cylinder 140 includes a cylinder 141 and a rod 142 that is pneumatically moved in and out of the cylinder 141. The air cylinder 140 functions as a driving source for the movement of the air knife 200.

The base 110 is immovable with respect to the above-mentioned fixed position (that is, the operating position of the air knife 200). In other words, the base 110 is immobile with respect to the rollers 301. The base 110 holds the cylinder 141.

FIG. 4 is a perspective view showing the appearance of the stroke device 100, and FIG. 5 is a perspective view showing the appearance of the stroke device 100 from another direction. More specifically, FIG. 4 is a perspective view from the side where the air outlet 201 of the air knife 200 cannot be seen, and FIG. 5 is a perspective view from the side where the air outlet 201 of the air knife 200 can be seen. FIG. 6 is a view of the stroke device 100 as viewed from the YZ plane.

The housing 120 holds two points (for example, both ends 210) of the air knife 200. The housing 120 is movable along the direction in which the air knife 200 is moved with respect to the base 110.

The bracket 131 moves with respect to the base 110 to which the rod 142 is attached. Further, the bracket 131 is interposed between the air cylinder 140 and the housing 120, and transmits the power of the air cylinder 140 to the housing 120.

FIG. 7 is a diagram showing a connecting structure 130 included in the stroke device 100. The connecting structure 130 is composed of bolts 132, holes 133, washers 134, spacers 135, and the like.

In the present embodiment, the base 110 and the housing 120 have a structure in which an intervening portion 1311 which is a part of the bracket 131 is sandwiched between them, and the base 110 is substantially orthogonal to the above-mentioned overlapping direction, that is, the cylinder 141. Hold the lay down. A rail 151 and a slider 152 that slidably meshes with the rail 151 are provided between the intervening portion 1311 and the base 110. The rail 151 is provided on the base 110, and the slider 152 is provided on the intervening portion 1311 of the bracket 131. Each is fixed. When the bracket 131 is pushed by the rod 142, the bracket 131 is guided by the slider 152 and slides, and the housing 120 fixed to the bracket 131 also moves along the rail 151.

The housing 120 and the bracket 131 are in contact with each other on planes 122 and 1312 (see FIG. 2), and the planes 122 and 1312 are substantially parallel to the direction of movement (first direction).

The connecting structure 130 connects the housing 120 to the bracket 131 so as to be movable by a predetermined dimension α or more along a plane (XY plane) including the longitudinal direction and the moving direction (first direction) of the air knife 200. The specific structure will be described below.

The spacer 135 is a short cylindrical member. The bolt 132 is screwed into the bracket 131 with the shaft portion inserted into the holes of the washer 134 and the spacer 135. The washer 134 has a diameter larger than that of the hole 133, serves as a retainer from the hole 133, and provides a frictional force for properly fixing the bolt 132 and the spacer 135 to the base 110.

The hole 133 is provided in the housing 120 and has a radius larger than the radius of the spacer 135 by a predetermined dimension α. That is, the hole 133 surrounds the spacer 135 surrounding the bolt 132 with a gap of a predetermined dimension α.

Further, the length β of the spacer 135 is larger than the depth γ of the hole 133. The spacer 135 determines the protruding length of the shaft portion of the inserted bolt 132 from the hole 133 longer than the depth γ of the hole 133. Although drawn in an exaggerated manner in FIG. 7 for the sake of clarity, the difference between the length β and the depth γ may be small, as long as the housing 120 can move with respect to the bracket 131.

Further, as described above, the holes 133 and the spacer 135 are cylindrical, and the axial directions of the cylinders are planes 122 and 1312 substantially parallel to the longitudinal direction of the air knife 200 and the first direction described above (FIG. 2). (See) is approximately orthogonal.

With the connecting structure 130 having the above structure, the housing 120 is movably connected to the bracket 131 along the XY plane direction. Further, as a result, the rod 142 and the air knife 200 are connected to each other including play.

Returning to FIG. 6, the stroke device 100 includes a stopper 160 that limits the range of movement of the housing 120 with respect to the base 110. The stopper 160 has a pair of abutting portions 161, 162 arranged so as to face each other along the direction of movement.

One abutting portion 161 (first abutting portion) is attached to the base 110, and the other abutting portion 162 (second abutting portion) is attached to the housing 120. More specifically, the abutting portions 161, 162 are screws screwed into the base 110 and the housing 120, and the relative positions with the base 110 and the housing 120 can be adjusted by turning the screws. .. These abutments 161, 162 move closer to each other or apart from each other depending on the direction of movement of the housing 120 along the rail 151. The abutting portion 162 abuts on the abutting portion 161 as the housing 120 moves with respect to the base 110.

When the abutting portion 162 of the housing 120 approaches the abutting portion 161 of the base 110, further movement of the housing 120 in the same direction is prevented when the abutting portion 162 hits the abutting portion 161. Will be done. However, since the bracket 131, the bolt 132, and the spacer 135 can be moved by the amount of play after this, the rod 142 is also slightly driven.

Further, the stroke device 100 includes a positioning structure 170 (see FIGS. 11 to 14, which will be described later). The positioning structure 170 is composed of a hole 133 and a spacer 135, and positions an air knife 200 that is moved by the power of an air cylinder 140 at a fixed position (a position when the air knife 200 is in operation).

<Action 1: Prevention of prying>
The stroke device 100 according to the first embodiment has the above configuration, and its operation and operation will be described below.

Here, FIG. 8 is a diagram for explaining the prying of the rod 142 with respect to the cylinder 141 in the conventional stroke device 600. In the conventional stroke device 600, the rod 142 and the air knife 200 are connected without play. Therefore, when the movements of the pair of rods 142 with respect to the cylinder 141 are not uniform, the rods 142 are tilted with respect to the cylinder 141 as shown on the right side of FIG. 8, and the rods 142 are twisted in the cylinder 141.

Compared to the conventional stroke device 600 as described above, the stroke device 100 of the present embodiment is configured so that the air cylinder 140 is not twisted, which is inconvenient due to the conventional configuration. That is, the stroke device 100 of the present embodiment has a configuration in which the play described with reference to FIG. 7 is included in the connection between the rod 142 and the air knife 200.

That is, in the stroke device 100, since the radius of the hole 133 is larger than the radius of the spacer 135 by a predetermined dimension α, a gap is left between the hole 133 and the spacer 135, and the gap is used as play. Function. The housing 120 can be moved with respect to the bracket 131 by the amount of this play dimension.

FIG. 9 is a diagram showing the operation of the stroke device 100 of the present embodiment. In the figure, the upper row (a) shows before the start of the stroke, the middle row (b) shows during the stroke, and the lower row (c) shows after the stroke is completed.

FIG. 9B shows an example in the middle of the stroke when the positions of the pair of rods 142 with respect to the cylinder 141 are not aligned. Even if the position of the rod 142 with respect to the cylinder 141 is displaced as in this example, the displacement of the position is absorbed by the play described above, so that the rod 142 can be kept straight with respect to the cylinder 141. Therefore, in the stroke device 100 of the present embodiment, the rod 142 is prevented from being twisted in the cylinder 141.

By the way, as an example of the dimensions of each part, the longitudinal dimension of the air knife 200 is 3 to 4.5 meters, the evacuation distance of the air knife 200 from the roller 301 is 50 mm, and the gap between the bolt 132 and the hole 133 is in the radial direction. It is 5.5 mm (11 mm, which is twice the diameter).

Since the air knife 200 is made of sheet metal, is lightweight and often long, the support is not cantilever, but both ends 210 are supported. Air cylinders 140 are often used to move such objects, but according to this embodiment, even if there is a difference in the movement timing and speed of the rods 142 of the paired air cylinders 140, the rods It is possible to prevent the occurrence of inconvenience caused by the 142 twisting inside the cylinder 141.

<Action 2: Positioning>
Next, positioning of the air knife 200 at a fixed position by the positioning structure 170 (see FIGS. 11 to 14) will be described. FIG. 6 above shows the stroke device 100 at the retracted position (corresponding to the state (initial state) before the start of the stroke shown in FIG. 9A). On the other hand, FIG. 10 is a diagram showing the stroke device 100 at the operating position (corresponding to the state after the stroke is completed (completed state) shown in FIG. 9C). When the stroke is completed, the air knife 200 is positioned at a fixed position (operating position). The positioning is due to the movement of the cylindrical spacer 135 within the cylindrical hole 133. The operation and action thereof will be described below.

FIG. 11 is a diagram showing an example of a state of the spacer 135 and the hole 133 of the stroke device 100 in the retracted position. Since the housing 120 in the retracted position can be moved with respect to the bracket 131 by a gap (see FIG. 7) having a predetermined dimension α, the housing 120 is not strictly positioned. However, since the housing 120 exerts a frictional force between its lower surface and the upper surface of the bracket 131 and a frictional force with the washer 134, the housing 120 moves freely enough to rattle with respect to the bracket 131. No inconvenience occurs.

FIG. 12 is a diagram showing a state of the spacer 135 and the hole 133 of the stroke device 100 when the abutting portion 162 hits the abutting portion 161. FIG. 12A shows a housing 120 with respect to the base 110 in the process of the stroke. (B) is an example of a state in which the position of the housing 120 is not displaced with respect to the base 110 in the process of the stroke.

If the position of the housing 120 does not shift with respect to the base 110 in the process of the stroke, the position of the spacer 135 in the hole 133 does not change from the state shown in FIG. When the position of the housing 120 is displaced with respect to the base 110 in the process of the stroke, the position of the spacer 135 in the hole 133 changes from the state shown in FIG. 11, for example, as shown in FIG. 12A, the spacer 135. Is biased within the hole 133.

FIG. 13 is a diagram showing an example of a state of the spacer 135 and the hole 133 of the stroke device 100 in the operating position. In this state, the housing 120 reaches the position where the rod 142 completely stops after the abutting portions 161, 162 are in contact with each other (the state shown in FIG. 12). From the state of FIG. 12 to the state of FIG. 13, the spacer 135 moves in the hole 133. In the state shown in FIG. 13, the spacer 135 is located in the hole 133 on the most downstream side in the moving direction of the housing 120 (that is, the protruding direction of the rod 142 from the cylinder 141). In this state, the stroke of the stroke device 100 is completed, and the air knife 200 is positioned with respect to the roller 301.

The movement of the spacer 135 in the hole 133 from the contact between the abutting portion 161 and the abutting portion 162 (shown in FIG. 12) to the completion of positioning (shown in FIG. 13) will be described in detail. FIG. 14 is a diagram showing the positional relationship between the bolt 132, the spacer 135, and the hole 133 by comparing (a) when the abutting portion 161 and the abutting portion 162 are in contact with each other and (b) when positioning is completed. ..

In FIG. 14A, the two straight lines p1 and q1 that pass through the axis of the hole 133 and are orthogonal to each other are defined as the vertical center line p1 and the horizontal center line q1, respectively, and the two straight lines that pass through the axes of the bolt 132 and the spacer 135 and are orthogonal to each other. Let p2 and q2 be the vertical center line p2 and the horizontal center line q2, respectively.

Further, in FIG. 14B, the two straight lines p3 and q3 that pass through the axes of the bolt 132 and the spacer 135 and are orthogonal to each other are designated as the vertical center line p3 and the horizontal center line q3, respectively. Here, the horizontal center line q3 coincides with the horizontal center line q1.

When the abutting portion 161 and the abutting portion 162 are in contact with each other, the housing 120 is not strictly positioned with respect to the bracket 131. That is, the positional relationship between the axis of the hole 133 (the intersection of the vertical center line p1 and the horizontal center line q1) and the axis of the bolt 132 (the intersection of the vertical center line p2 and the horizontal center line q2) is sometimes changed. Can vary.

The movement of the bracket 131 basically stops when the abutting portion 161 and the abutting portion 162 come into contact with each other, but at the time of FIG. 14A, the rod 142 is still in a movable state, so that the bolt 132 and the spacer 135 are Move in the hole 133. The movement stops at the position shown in FIG. 14 (b). Positioning is completed by such an operation.

In the state of FIG. 14A, the bolt 132 receives a force in the arrow m direction (first direction), and the outer circumference of the spacer 135 moves along the inner circumference of the hole 133 by this force. ..

When the positioning shown in FIG. 14B is completed, the axial center of the bolt 132 is a tangent line of the hole 133 and is the first one, as compared with the case where the abutting portion 161 and the abutting portion 162 shown in FIG. 14A are in contact with each other. It approaches the vertical line o that is substantially orthogonal to the direction (that is, the axis of the bolt 132 moves from the vertical center line p2 to the vertical center line p3). When the positioning is completed, the spacer 135 comes into contact with the position on the most downstream side in the moving direction (the intersection of the vertical line o and the horizontal center line q1) in the hole 133. As a result, the contact point between the spacer 135 and the hole 133, the axis of the bolt 132, and the axis of the hole 133 are aligned in a straight line.

That is, the rod 142 is driven, and the outer peripheral surface of the spacer 135 comes into contact with the inner peripheral surface of the hole 133 in a state where the lateral center line q3 of the spacer 135 and the lateral center line q1 of the hole 133 coincide with each other, thereby positioning the rod 142. .. Since the bolt 132 receives a force from the rod 142 in the direction of the arrow m, it stabilizes in the hole 133 when the positioning is completed.

<Effect>
As described above, according to the present embodiment (action 1), even if the movement timings and speeds of the rods 142 of the pair of air cylinders 140 do not match during the stroke by the stroke device 100, it is assumed that the deviation is caused by the movement timing and the speed. Since a certain size is included in the connecting structure 130 as a gap of a predetermined size α, the deviation is absorbed. As a result, the occurrence of inconvenience such that the rod 142 tilts with respect to the cylinder 141 and twists inside the cylinder 141 can be suppressed.

Further, according to the present embodiment (action 2), the air knife 200 is positioned by positioning the outer circumference of the cylindrical spacer 135 at the inner circumference of the cylindrical hole 133. That is, according to the present embodiment, after the movement of the housing 120 is stopped by the stopper 160, the spacer 135 is pushed by the rod 142 and advances in the hole 133. The advancing spacer 135 pushes the inner peripheral surface of the hole 133, and the air knife 200 is finally positioned when the lateral center line q1 of the hole 133 and the lateral center line q3 of the spacer 135 coincide with each other. As described above, when the spacer 135 and the hole 133 are cylindrical, the positioning of the air knife 200 is performed at the circular contact point between the hole 133 and the spacer 135, and the operating position of the air knife 200 is accurately positioned.

[Modification example]
In the above embodiment, the bolt 132 is screwed into the base 110 and the hole 133 is provided in the housing 120, but in the embodiment, the bolt 132 may be screwed into the housing 120 and the hole 133 may be provided in the base 110.

Further, in the above embodiment, the base 110 holds the cylinder 141 and the rod 142 is connected to the housing 120, but in the embodiment, the housing 120 holds the cylinder 141 and the rod 142 is connected to the base 110. You may.

Further, in the implementation, for example, if the head of the bolt 132 has a diameter corresponding to the washer 134, the washer 134 may be unnecessary. Further, instead of the spacer 135, it is conceivable that the shaft portion of the bolt 132 is stepped with a thickness equivalent to that of the spacer 135. It is also conceivable to attach nuts and washers to stud bolts instead of stepped bolts. In any case, it is sufficient that the housing 120 is not completely fixed to the bracket 131 and the housing 120 is movably connected to the bracket 131 within a predetermined range.

Further, in the above embodiment, the air knife 200 and the housing 120, which are the objects to be supported, are described as separate bodies, but in the embodiment, even if the housing is integrated with the object to be supported (the housing is the object to be supported). It doesn't matter if it is part of the configuration).

100 ... Stroke device 110 ... Base 120 ... Housing 131 ... Bracket, 1311 ... Intervening part 130 ... Connecting structure, 132 ... Bolt 133 ... Hole, 134 ... Washer, 135 ... Spacer 140 ... Air cylinder, 141 ... Cylinder, 142 ... Rod 151 ... Rail, 152 ... Slider 160 ... Stopper, 161 ... Abutment part (1st abutting part), 162 ... Abutting part (2nd abutting part)
170 ... Positioning structure 200 ... Air knife (support object), 201 ... Outlet 300 ... Sheet drainer, 301 ... Roller, 302 ... Duct 500 ... Sheet 600 ... Conventional stroke device

Claims (6)

A stroke device that supports two points separated in the longitudinal direction of the object to be supported and moves the object to be supported in the first direction substantially orthogonal to the longitudinal direction.
A base that is immovably provided with respect to the fixed position of the support object,
A pair of air cylinders comprising a cylinder and a rod that is pneumatically moved in and out of the cylinder, the cylinder or the rod being held by the base and functioning as a drive source for the movement.
A bracket to which the rod or cylinder is attached and moves relative to the base,
A connecting structure in which the two locations of the support object are connected to the bracket so as to be movable by a predetermined dimension or more along a plane including the longitudinal direction and the first direction.
A stroke device characterized by comprising. A stroke device that supports two points separated in the longitudinal direction of the object to be supported and moves the object to be supported in the first direction substantially orthogonal to the longitudinal direction.
A base that is immovably provided with respect to the fixed position of the support object,
A housing that holds the two locations of the support object, and
A pair of air cylinders comprising a cylinder and a rod that is pneumatically moved in and out of the cylinder, the cylinder or the rod being held by the base and functioning as a drive source for the movement.
A bracket to which the rod or cylinder is attached and moves relative to the base,
A connecting structure for connecting the housing to the bracket so as to be movable by a predetermined dimension or more along a plane including the longitudinal direction and the first direction.
A stroke device characterized by comprising. The connecting structure is
A bolt screwed into one of the bracket and the housing,
A hole provided on the other side of the bracket and the housing so as to move the bolt by at least the predetermined size or more.
2. The stroke device according to claim 2, wherein the stroke device is provided. A spacer is provided through which the shaft portion of the bolt is inserted and the length of the shaft portion protruding from the hole is set to be longer than the depth of the hole.
The stroke device according to claim 3, wherein the hole has a size that leaves a gap of the predetermined dimension around the spacer. The stroke device according to claim 4, further comprising a stopper that limits the range of movement of the housing with respect to the base. The holes and the spacers are cylindrical and
The axial direction of the cylinder is substantially orthogonal to the plane including the longitudinal direction and the first direction.
The stopper has a first abutting portion provided on the base and a second abutting portion provided on the housing and abutting on the first abutting portion as it moves.
After the first abutting portion and the second abutting portion come into contact with each other, the straight line passing through the axial center of the hole and the straight line passing through the axial center of the spacer coincide with each other by driving the air cylinder. The stroke device according to claim 5, wherein the outer peripheral surface of the spacer is in contact with the inner peripheral surface of the hole.

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