JP2020028849A - Inner wall cleaning device - Google Patents

Abstract

To provide an inner wall cleaning device which can easily clean matters adhering to an inner wall.SOLUTION: An inner wall cleaning device 10 which is installed on a pin chain 100 located along an inner wall W, and cleans the inner wall W while moving in a first direction together with the pin chain 100. The device comprises: a body part 12 which is attached to an extension pin 102 projecting in a second direction crossing the first direction and toward the inner wall W from a roller chain 101 extending in the first direction, of the pin chain 100; and a cleaning part 14 which is supported on the body part 12 and removes matters adhering to the inner wall W.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inner wall cleaning device.

  2. Description of the Related Art Conventionally, for example, a tubular body drying apparatus disclosed in Patent Document 1 is known. The tubular body is a can body for a two-piece can that has been coated on the outer surface. The drying device introduces hot air into the inside of the device main body while conveying the bottomed cylindrical can body by a pin chain, and dries the paint applied to the can body.

JP-A-6-159939

  Fume (adhered matter) adheres and accumulates on the inner wall of the drying device. Fume is solidified synthetic resin or the like volatilized from the paint of the can body. Since the can body is conveyed to the pin chain and passes near the inner wall, fume may adhere to the can body. For this reason, the operator regularly wipes and cleans the fumes on the inner wall by hand, but the work load is large and the efficiency is low.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an inner wall cleaning device capable of efficiently and easily cleaning the attached matter attached to the inner wall.

  One aspect of the present invention is an inner wall cleaning device that is mounted on a pin chain arranged along an inner wall and cleans the inner wall while moving in a first direction together with the pin chain. A main body attached to an extension pin protruding from the roller chain extending in the first direction in a second direction crossing the first direction toward the inner wall; supported by the main body and attached to the inner wall; And a cleaning unit for removing the adhered substances.

  In one aspect of the present invention, the inner wall cleaning device is attached to the pin chain and moves along the inner wall as the pin chain moves. At this time, the cleaning unit comes into contact with the inner wall and can clean the attached matter on the inner wall. Therefore, unlike the related art, the worker does not need to manually clean the inner wall, and the inner wall can be efficiently and easily cleaned.

  In the inner wall cleaning device, it is preferable that the main body is attached to a first extension pin and a second extension pin that are arranged apart from each other in the first direction among the plurality of extension pins of the pin chain. .

  In this case, since the main body is attached to the first extension pin and the second extension pin which are arranged apart in the first direction, the rotation of the inner wall cleaning device around the extension pin is suppressed. Therefore, the cleaning efficiency is stably improved.

  In the inner wall cleaning device, it is preferable that the main body is fixed to the first extension pin in the first direction, and is movable with respect to the second extension pin.

  The pin chain may be bent and moved while being hung over a sprocket inside the drying device. That is, the distance (shortest distance) between the first extension pin and the second extension pin changes between a linearly extending portion and a curvedly extending portion of the pin chain. Therefore, by adopting the above configuration, even when the distance between the first extension pin and the second extension pin changes, the inner wall cleaning device can smoothly follow the movement of the pin chain.

  In the inner wall cleaning device, it is preferable that the main body is detachably attached to the extension pin.

  In this case, the inner wall cleaning device can be attached to the pin chain only when the inner wall needs to be cleaned.

  In the above inner wall cleaning device, it is preferable that a driving unit that drives the cleaning unit is provided, and the main body unit includes the driving unit.

  In this case, for example, as compared with a configuration in which the cleaning unit is simply brought into contact with the inner wall, the cleaning unit driven by the driving unit is brought into contact with the inner wall, so that the cleaning efficiency of the inner wall is further improved.

  In the inner wall cleaning device, it is preferable that the driving unit includes a motor that rotates the cleaning unit about an axis along the second direction.

  In this case, since the cleaning unit contacts the inner wall while rotating about the axis along the second direction, a large contact area between the cleaning unit and the inner wall can be secured. Therefore, the cleaning efficiency is improved.

  In the above inner wall cleaning device, it is preferable that the driving unit includes a battery that supplies power to the motor.

  In this case, there is no need to supply power from outside the device to drive the motor. For this reason, the inner wall cleaning device is easy to handle, and the cleaning operation can be further facilitated.

  In the inner wall cleaning device, the main body includes a first urging unit that is movably attached to the extension pin in the second direction and urges the main body toward the inner wall in the second direction. Is preferred.

  In this case, the first urging unit urges the cleaning unit toward the inner wall together with the main body. For example, even if the distance between the inner wall and the extension pin fluctuates during the movement of the pin chain, the main body and the cleaning unit are urged toward the inner wall, so that the cleaning unit is pressed against the inner wall and kept in contact with the inner wall. For this reason, the cleaning operation of the inner wall is stabilized.

  In the above inner wall cleaning device, it is preferable that the cleaning unit includes a polishing member having abrasive particles dispersed on the surface.

  In this case, the inner wall can be efficiently and simply cleaned by using, for example, a rotary polishing brush having a sandpaper portion on the surface as the polishing member.

  It is preferable that the inner wall cleaning device further includes a cleaning cover supported by the main body and covering the cleaning unit.

  In this case, the cleaning cover can suppress the attachment removed from the inner wall by the cleaning unit from attaching to the pin chain.

  In the above inner wall cleaning device, it is preferable that the cleaning cover portion has a plurality of wheels rolling on the inner wall.

  In this case, the cleaning cover moves smoothly along the inner wall. That is, when the wheels roll on the inner wall, the inner wall cleaning device can move smoothly on the inner wall. This makes it easier for the inner wall cleaning device to stably follow the movement of the pin chain.

  In the inner wall cleaning device, as viewed from the second direction, the plurality of wheels are located on both sides in the first direction, and on both sides in a third direction orthogonal to the first direction, with the cleaning unit as a center. It is preferable that each is arranged.

  In this case, since the wheels travel stably on the inner wall, the posture of the inner wall cleaning device is less likely to collapse, and the movement of the inner wall cleaning device that follows the pin chain is stabilized.

  In the inner wall cleaning device, it is preferable that a distance between the plurality of wheels arranged apart from each other in the first direction is larger than a distance between the plurality of wheels arranged apart from each other in the third direction. .

  In this case, the running stability of the wheels rolling on the inner wall increases, and the cleaning of the inner wall by the cleaning unit can be performed smoothly and stably.

  In the above inner wall cleaning device, the cleaning cover portion is supported movably in the second direction with respect to the main body portion, and the main body portion urges the cleaning cover portion toward the inner wall side in the second direction. It is preferable to have a second urging portion.

  In this case, the second biasing portion has a function as a wheel suspension. The wheel is pressed against the inner wall via the cleaning cover by the second urging portion, and the wheel stably rolls on the inner wall. In addition, since the main body and the cleaning cover are relatively movable in the second direction, the cleaning unit is pressed against the inner wall by, for example, the first urging unit according to the amount of wear when the cleaning unit is worn. In this case, the main body and the cleaning cover are moved closer to each other in the second direction, so that the wheel can be stably brought into contact with the inner wall and the cleaning unit can be brought into close contact with the inner wall.

  In the above inner wall cleaning device, it is preferable that the cleaning cover is swingably supported with respect to the main body.

  In this case, when the wheel gets over the undulations or protrusions of the inner wall, the cleaning cover swings with respect to the main body, and the cleaning cover can move smoothly along the inner wall. Thereby, the posture at the time of cleaning of the inner wall cleaning device is stabilized, and the inner wall can be efficiently cleaned.

  In the above inner wall cleaning device, it is preferable that the cleaning cover portion has a magnet portion facing the inner wall with a gap.

  In this case, the cleaning cover can be stably pressed against the inner wall by the attraction (magnetic force) of the magnet. Further, since the magnet does not contact the inner wall, the movement of the inner wall cleaning device is stabilized.

  In the inner wall cleaning device, the cleaning cover unit has a plurality of wheels rolling on the inner wall, and the magnet unit is disposed between the cleaning unit and the wheels when viewed from the second direction. Is preferred.

  In this case, it is possible to prevent the magnet portion from protruding outside the wheel. For this reason, it is suppressed that a magnet part collides with a projection etc. of an inner wall, and movement of an inner wall cleaning device is stabilized.

  According to the inner wall cleaning device of one aspect of the present invention, it is possible to efficiently and easily clean the adhered matter adhered to the inner wall.

It is a side view which shows the inner wall cleaning device of this embodiment. It is a top view which shows the part of the inner wall cleaning device of this embodiment. It is a front view showing the inner wall cleaning device of this embodiment. It is a rear view showing the inner wall cleaning device of this embodiment. It is the top view, (b) front view, and (c) side view which show the support cover of a cleaning cover part. It is the top view which shows the spring holder of an urging | biasing part, (b) It is a side view. It is the side view which shows the spring stopper of an urging | biasing part, (b) It is a top view.

Hereinafter, an inner wall cleaning device 10 according to an embodiment of the present invention will be described with reference to the drawings.
The inner wall cleaning device 10 of the present embodiment is a device that cleans an inner wall W of a drying device (not shown). The drying device is, for example, an oven that dries a paint applied to a can body for a two-piece can. This drying device is called a pin oven.
The drying device has a pin chain 100 that moves along the inner wall W of the drying device. That is, the pin chain 100 is arranged along the inner wall W.

As shown in FIG. 1, the pin chain 100 includes a roller chain 101 and a plurality of extension pins 102 protruding from a side surface of the roller chain 101.
The roller chain 101 extends substantially parallel to the inner wall W of the drying device. The roller chain 101 is bridged between a plurality of sprockets inside the drying device. The roller chain 101 has a linearly extending portion and a curvedly extending portion inside the drying device.

The extension pin 102 protrudes from the side plate 101s of the roller chain 101 and extends linearly toward the inner wall W. A plurality of extension pins 102 are provided on the roller chain 101 at intervals in the direction in which the roller chain 101 extends. The plurality of extension pins 102 are arranged at regular intervals on the roller chain 101. A conical cap 103 is attached to the tip of the extension pin 102.
The bottomed cylindrical can body is hooked and held by the extension pin 102. Then, as the roller chain 101 moves, the can body is transported inside the drying device.

  In the present embodiment, the direction in which the roller chain 101 extends is referred to as a vertical direction (first direction, X direction). When the sprocket is rotationally driven, the roller chain 101 moves upward in FIG. That is, in the present embodiment, the upper side (+ X) is the moving direction of the roller chain 101, and the lower side (−X) is the direction opposite to the moving direction of the roller chain 101.

  The extension pin 102 protrudes from the roller chain 101 in a direction crossing the vertical direction toward the inner wall W. That is, the extension pin 102 extends in a direction crossing the vertical direction. In the present embodiment, the direction in which the extension pin 102 extends is orthogonal to the direction in which the roller chain 101 extends. The direction in which the extension pins 102 extend is referred to as the front-back direction (second direction, Y direction). In the front-rear direction, the tip side of the extension pin 102 is called a front side (+ Y), and the root side of the extension pin 102 is called a rear side (-Y). That is, the front side is a direction from the roller chain 101 to the inner wall W of the drying device, and the rear side is a direction from the inner wall W to the roller chain 101.

  A direction perpendicular to the up-down direction and the front-back direction is referred to as a width direction (third direction, Z direction). In the width direction, the direction approaching the roller chain 101 is called the inside in the width direction, and the direction away from the roller chain 101 is called the outside in the width direction.

  The above vertical direction (upper side, lower side), front and rear direction (front side, rear side), and width direction (inner side, outer side) are simply names for describing the relative positional relationship of each part. , Etc., are not limited to the positional relationships indicated by these names.

  Cleaning of the inner wall W of the drying device is performed periodically, for example, about several times a month or year. The inner wall cleaning device 10 is attached to the extension pin 102 of the pin chain 100, and cleans the inner wall W of the drying device while moving up and down together with the pin chain 100.

  The inner wall cleaning device 10 is detachably attached to two extension pins 102 (extension pins 102A and 102B) arranged adjacent to each other in the direction in which the roller chain 101 extends. The inner wall cleaning device 10 is transported inside the drying device as the roller chain 101 moves. Then, the inner wall cleaning device 10 cleans the inner wall W of the drying device while being transported inside the drying device.

As shown in FIGS. 1 to 4, the inner wall cleaning device 10 includes a main body 12, a driving unit 13, a cleaning unit 14, a cleaning cover 15, and an urging unit 16.
The main body 12 has a drive unit 13 mounted thereon and supports the cleaning unit 14. The driving unit 13 drives the cleaning unit 14. The cleaning unit 14 removes fumes and other deposits attached to the inner wall W. The cleaning section 14 is covered by a cleaning cover section 15 supported by the main body section 12. The urging portion 16 urges the main body 12 toward the inner wall W side (that is, the front side) in the front-rear direction.
For convenience of explanation, the driving unit 13 and the cleaning unit 14 will be described first.

The drive unit 13 drives the cleaning unit 14 to rotate. The drive unit 13 has a motor 31, a battery 32, and a power switch 33.
The motor 31 is a drive source for rotating the cleaning unit 14. As the motor 31, for example, a permanent magnet DC motor or the like is used. The center axis of the output shaft of the motor 31 is indicated by the symbol L in the figure. The output shaft of the motor 31 extends in the front-back direction. The motor 31 rotates the cleaning unit 14 around the output shaft of the motor 31. That is, the drive unit 13 rotates the cleaning unit 14 around an axis along the front-rear direction.

The battery 32 is a storage battery that supplies electric power (direct current) to the motor 31. As the battery 32, for example, a lithium ion secondary battery or the like is used.
The power switch 33 is electrically connected to the motor 31 and the battery 32. The power switch 33 is turned on and off by the user when the power is supplied from the battery 32 to the motor 31.

The cleaning unit 14 has a polishing brush 41 for cleaning the inner wall W, and is disposed on the front side of the main body 12.
The polishing brush (polishing member) 41 is a disk-shaped member, and has a sandpaper portion in which abrasive grains are dispersed on the surface. The polishing brush 41 is connected to an output shaft of the motor 31 via a brush attachment jig 43. That is, the rotating shaft of the polishing brush 41 is arranged coaxially with the output shaft of the motor 31. The central axis of the rotating shaft of the polishing brush 41 is indicated by reference numeral N in the figure. Thus, the polishing brush 41 is driven to rotate by the motor 31.
In the present embodiment, the central axis L of the output shaft of the motor 31 and the central axis N of the rotation axis of the polishing brush 41 are arranged at positions overlapping the roller chain 101 when viewed from the front-back direction.

  The main body 12 is attached to an extension pin 102 of the pin chain 100. The main body 12 is attached to an extension pin (first extension pin) 102A and an extension pin (second extension pin) 102B that are arranged apart from each other in the up-down direction among a plurality of extension pins 102 included in the pin chain 100. In the example of the present embodiment, the main body 12 is detachably attached to the extension pin 102.

The main body 12 holds the driving unit 13. The main body 12 accommodates the motor 31 and the battery 32 of the drive unit 13 inside the main body 12.
The main body 12 has plates 21A and 21B, a base block 24, a motor housing 25, a plunger holder 26, a spacer 27, and a plunger 28.

The plates 21A and 21B are a pair of plate-like members that are bridged between the extension pins 102A and 102B. The plates 21A and 21B have a flat plate shape that extends in a direction perpendicular to the front-rear direction. The plates 21A and 21B have substantially the same shape. In the example of the present embodiment, the plates 21A and 21B have a rectangular plate shape. The length of the plates 21A and 21B in the vertical direction is larger than the length in the width direction.
Of the pair of plates 21A and 21B, one plate 21A is disposed on the front side, and the other plate 21B is disposed on the rear side. That is, the pair of plates 21A and 21B are arranged apart from each other in the front-rear direction. The plate 21A and the plate 21B face each other in the front-rear direction and are arranged in parallel with each other.

  As shown in FIG. 4, when viewed from the front-back direction, semi-circular grooves 21c are provided on the upper surfaces of the plates 21A and 21B, respectively. The groove 21c extends along the front-back direction. The extension pin 102A is inserted into the groove 21c. The radius of the groove 21c is slightly larger than the radius of the extension pin 102A.

Opening / closing levers 22 are respectively arranged on the upper surfaces of the plates 21A and 21B. The opening / closing lever 22 is connected to the plates 21A and 21B so as to be rotatable around a hinge portion 29.
As shown in FIG. 4, when viewed from the front-back direction, a groove 22 c having a semicircular arc shape is provided on the lower surface of the opening / closing lever 22. The groove 22c extends along the front-back direction. The extension pin 102A is inserted into the groove 22c. The radius of the groove 22c is slightly larger than the radius of the extension pin 102A.

By passing the extension pin 102A between the groove 21c and the groove 22c and closing the opening / closing lever 22, the plates 21A and 21B are attached to the extension pin 102A.
The opening / closing lever 22 is fixed to the plates 21A and 21B using a thumb screw 23. Further, by removing the thumbscrew 23 and opening the opening / closing lever 22, the plates 21A and 21B can be removed from the extension pin 102A.

  The plates 21A and 21B attached to the extension pin 102A are fixed to the extension pin 102A in the up-down direction and the width direction. That is, the main body 12 is fixed to the extension pin 102A in the up-down direction and the width direction. The plates 21A and 21B mounted on the extension pins 102A are movable in the front-rear direction with respect to the extension pins 102A.

  As shown in FIG. 4, slit-shaped grooves 21d extending upward from the lower surfaces are provided on the lower surfaces of the plates 21A and 21B, respectively. The groove 21d extends along the front-back direction. The extension pin 102B is inserted into the groove 21d. The width of the groove 21d is slightly larger than the diameter of the extension pin 102A.

  The plates 21A and 21B are attached to the extension pins 102B so as to be vertically movable. That is, the main body 12 is movable with respect to the extension pin 102B in the vertical direction. The plates 21A and 21B are movable in the front-rear direction with respect to the extension pins 102B. That is, the main body 12 is attached to the extension pins 102 (102A, 102B) so as to be movable in the front-rear direction.

  Of the plates 21A and 21B, a through hole or the like that penetrates the plates 21A and 21B in the front-rear direction is provided in an intermediate portion located between both ends in the vertical direction. The motor housing 25 is inserted through the through hole of the plate 21A. The power switch 33 is disposed in the through hole of the plate 21B so as to be exposed to the outside.

As shown in FIG. 1, the base block 24 is a rectangular parallelepiped member that houses the motor 31 and the battery 32. The base block 24 is arranged between the plates 21A and 21B and is fixed to the plates 21A and 21B.
The base block 24 is provided with two through holes for accommodating the motor 31 and the battery 32. The two through holes of the base block 24 extend in the front-rear direction.

  The motor housing 25 is a cylindrical member that houses the motor 31. The motor accommodating portion 25 is inserted into the through hole of the base block 24 and accommodates the motor 31, and is fixed to the base block 24. As a result, the motor 31 is fixed to the base block 24 in a posture in which the output shaft of the motor 31 extends forward.

  The plunger holder 26 is a cylindrical member, and is arranged on the front side of the plate 21A. The plunger holder 26 is arranged so as to surround the output shaft of the motor 31 around the axis. The plunger holder 26 holds a plurality of plungers 28 at the front end of the plunger holder 26.

  The spacer 27 is a cylindrical member disposed between the plate 21A and the plunger holder 26. The spacer 27 is provided, for example, for the purpose of adjusting the distance in the front-rear direction between the plate 21A and the plunger holder 26.

The plunger (second urging unit) 28 urges the cleaning cover unit 15 toward the inner wall W in the front-rear direction (that is, the front side). In the example of the present embodiment, four plungers 28 are provided at the front end of the plunger holder 26 at intervals around the output shaft of the motor 31. As shown in FIG. 3, the four plungers 28 are evenly arranged (90 ° intervals) on the same circumference around the output shaft of the motor 31 on the front end face of the plunger holder 26.
As shown in FIG. 2, the plunger 28 has a cylindrical rod 28a and a coil spring 28b arranged on the outer periphery of the rod 28a.

The rod 28a has its rear end held by the plunger holder 26 and extends toward the front. The rod 28a is held movably in the front-rear direction with respect to the plunger holder 26. The front end of the rod 28 a is fixed to the cleaning cover 15.
The rear end of the coil spring 28b is supported by the plunger holder 26, and is disposed on the outer periphery of the rod 28a. The front end of the coil spring 28b contacts the cleaning cover 15 from the rear. The coil spring 28b is extendable and contractable along the rod 28a. The coil spring 28b causes the urging force (elastic force) to act in the front-rear direction.

  When the cleaning cover 15 moves rearward with respect to the plunger holder 26, the rod 28a moves rearward with respect to the plunger holder 26, and the coil spring 28b contracts in the front-rear direction. When the cleaning cover unit 15 moves forward with respect to the plunger holder 26, the rod 28a moves forward with respect to the plunger holder 26, and the coil spring 28b extends in the front-rear direction.

  As shown in FIG. 2, the cleaning cover unit 15 includes a support cover 51, wheels 52, and a magnet unit 53. The cleaning cover unit 15 has a plurality of wheels 52. The cleaning cover 15 has a plurality of magnets 53.

  In the example of the present embodiment, the support cover 51 is made of, for example, sheet metal. The support cover 51 is a plate-shaped member having a U-shaped cross section perpendicular to the vertical direction. As shown in FIGS. 5A to 5C, both ends in the width direction of the support cover 51 project forward with respect to an intermediate portion located between both ends in the width direction of the support cover 51. The support cover 51 has a bent portion 51b and a flat plate portion 51a. The bent portions 51b are arranged at both ends in the width direction of the support cover 51 and extend in a direction perpendicular to the width direction. A pair of bent portions 51b are provided on the support cover 51. The flat plate portion 51a is disposed at an intermediate portion located between both ends in the width direction of the support cover 51, and spreads in a direction perpendicular to the front-rear direction. At the upper end of the flat plate portion 51a, there is provided a concave portion 51c penetrating the flat plate portion 51a in the front-rear direction and recessed downward from the upper end surface of the flat plate portion 51a. The front end (cap 103) of the extension pin 102A can be inserted into the recess 51c.

  The support cover 51 is disposed between the main body 12 and the polishing brush 41. The support cover 51 covers the polishing brush 41 from the rear side and the outside in the width direction. The support cover 51 supports a plurality of wheels 52 and a plurality of magnet units 53.

The support cover 51 is arranged on the front side of the plunger holder 26 and is connected to the four plungers 28. Specifically, the front end of the rod 28a is fixed to the support cover 51.
When the four plungers 28 individually expand and contract, the support cover 51 can move in the front-rear direction with respect to the plunger holder 26 and can swing. That is, the cleaning cover 15 is supported movably in the front-rear direction with respect to the main body 12. Further, the cleaning cover 15 is swingably supported by the main body 12.
The urging force (elastic force) of the coil spring 28b of the plunger 28 acts from the plunger holder 26 toward the support cover 51. Accordingly, the support cover 51 is pushed toward the front side.

  The wheels 52 roll on the inner wall W. The wheels 52 are rotatable up and down on the inner wall W. The wheel 52 is, for example, a roller made of silicone rubber. The wheel 52 is rotatably arranged inside the bent portion 51b of the support cover 51 in the width direction. The axle of the wheel 52 extends in the width direction. The wheel 52 is rotatably supported by the bent portion 51b. A portion of the wheel 52 located forward of the axle protrudes forward of the bent portion 51b. In the example of the present embodiment, two wheels 52 are provided in each of the pair of bent portions 51b (that is, four wheels in total). In the bent portion 51b, the two wheels 52 are arranged apart from each other in the up-down direction. The wheels 52 are arranged as a pair at both ends in the vertical direction of the bent portion 51b.

As shown in FIG. 3, when viewed from the front-back direction, the plurality of wheels 52 are arranged on both sides in the up-down direction and both sides in the width direction with the cleaning unit 14 as a center. In the example of the present embodiment, the four wheels 52 are arranged at symmetric positions in the up-down direction and the width direction around the output shaft of the motor 31. That is, the four wheels 52 are arranged on the circumference having the same radius around the output shaft of the motor 31. The distance between the plurality of wheels 52 arranged apart from each other in the vertical direction is larger than the distance between the plurality of wheels 52 arranged apart from each other in the width direction.
The four wheels 52 rotate while touching the inner wall W of the drying device when the inner wall cleaning device 10 is transported inside the drying device together with the pin chain 100.

  The magnet portion 53 is fixed to the flat plate portion 51a of the support cover 51. The magnet portion 53 extends forward from the flat plate portion 51a. The magnet portion 53 faces the inner wall W with a gap. The magnet part 53 has a permanent magnet at least at the front end. Portions other than the front end of the magnet portion 53 need not be permanent magnets. In the example of the present embodiment, four magnet portions 53 are provided on the support cover 51. The four magnet parts 53 are respectively arranged inside the four wheels 52 in the width direction. The wheel 52 has a portion projecting forward from the magnet 53. As illustrated in FIG. 3, the magnet 53 is disposed between the cleaning unit 14 and the wheel 52 when viewed from the front-back direction.

  The magnet portion 53 is arranged close to the inner wall W of the drying device when the inner wall cleaning device 10 is transported inside the drying device. Then, the magnet 53 presses the support cover 51 toward the inner wall W by generating an attractive force between the magnet 53 and the inner wall W. Thus, the four wheels 52 can be brought into close contact with the inner wall W.

As shown in FIG. 1, the urging portion (first urging portion) 16 is attached to each of the extension pins 102A and 102B, and the main body 12 is attached to the extension pins 102A and 102B with the main body 12 facing forward. Energize.
The urging portion 16 includes a coil spring 61, a spring holder 62, and a spring stopper 63.

  The coil springs 61 are arranged on the outer periphery of the extension pins 102A and 102B, respectively. The coil spring 61 is disposed between the plates 21A and 21B. The position of the plate 21B of the main body 12 in the front-rear direction when the coil spring 61 is most contracted in the front-rear direction is shown as a broken line in FIG. As illustrated in FIG. 1, in the example of the present embodiment, the plate 21 </ b> B can be stroked over substantially the entire region between the spring stopper 63 and the roller chain 101 in the front-rear direction.

  The spring holder 62 is disposed between the plates 21A and 21B and contacts the plate 21A. The spring holders 62 are attached to the extension pins 102A and 102B, respectively. As shown in FIGS. 6A and 6B, the spring holder 62 has a disk shape. The spring holder 62 has a large diameter part and a small diameter part. The large diameter portion contacts the plate 21A from the rear side. The small diameter portion has a smaller diameter than the large diameter portion and is located behind the large diameter portion. The front end of the coil spring 61 fits into the small diameter portion. The front end of the coil spring 61 contacts the large diameter portion from the rear side.

  The spring holder 62 is provided with an elongated groove 62a extending from the outer peripheral surface toward the center. The extension pins 102A and 102B are inserted into the grooves 62a. The spring holder 62 is movable in the front-rear direction with respect to the extension pins 102A and 102B in a state where the extension pin 102A or 102B is inserted into the groove 62a.

  The spring stopper 63 is disposed between the plates 21A and 21B, and is fixed to the extension pins 102A and 102B. The spring stopper 63 is attached to each of the extension pins 102A and 102B. As shown in FIGS. 7A and 7B, the spring stopper 63 is substantially disk-shaped as a whole. The spring stopper 63 has a large diameter part and a small diameter part. The small diameter portion has a smaller diameter than the large diameter portion and is located in front of the large diameter portion. The rear end of the coil spring 61 fits into the small diameter portion. The rear end of the coil spring 61 contacts the large diameter portion from the front side.

Specifically, the spring stopper 63 has a pair of members 63A and 63B obtained by dividing a disk into two semicircles. The spring stopper 63 has a through hole 63c located between the pair of members 63A and 63B and extending in the front-rear direction. The spring stopper 63 inserts the extension pin 102A or the extension pin 102B into the through hole 63c, and clamps the extension pin 102A or the extension pin 102B between the pair of members 63A and 63B. Thereby, the spring stopper 63 is fixed to the extension pins 102A and 102B, respectively.
The mounting position of the spring stopper 63 in the front-rear direction can be arbitrarily adjusted by loosening or tightening a screw of a screw member (not shown).

As shown in FIG. 1, the spring holder 62 and the spring stopper 63 support both ends of the coil spring 61, respectively. The spring holder 62 is arranged on the front side of the coil spring 61, and the spring stopper 63 is arranged on the rear side of the coil spring 61.
Since the spring stopper 63 is fixed to the extension pins 102A and 102B, the urging force (elastic force) of the coil spring 61 acts on the front side via the spring holder 62. Thereby, the urging unit 16 urges the main body unit 12 and the cleaning unit 14 toward the front side.

Next, a procedure for cleaning the inner wall W of the drying device using the inner wall cleaning device 10 will be described.
Prior to cleaning the inner wall W, the inner wall cleaning device 10 is mounted on the extension pins 102A and 102B in a state where the driving of the pin chain 100 is stopped.

  First, the urging portion 16 is attached to the extension pins 102A and 102B. The coil spring 61 is inserted into the extension pins 102A and 102B. The spring holder 62 and the spring stopper 63 are temporarily fixed to the extension pins 102A and 102B.

Next, the main body 12 is brought close to the pin chain 100, and the extension pins 102B are inserted into the grooves 21d of the plates 21A and 21B. At this time, the urging portion 16 is arranged between the plates 21A and 21B.
The opening / closing lever 22 of the main body 12 is opened, and the extension pin 102A is inserted into the groove 21c of the plates 21A and 21B. Then, the opening / closing lever 22 is closed and fixed with the thumb screw 23.

Next, the spring stopper 63 is fixed to the extension pins 102A and 102B. Specifically, a pair of members 63A and 63B of the spring stopper 63 are fastened with a screw member to hold the extension pins 102A and 102B.
At this time, the fixing position of the spring stopper 63 is adjusted, and the polishing brush 41 is brought into close contact with the inner wall W by the urging force of the urging unit 16.

Next, the power switch 33 of the drive unit 13 is switched to rotate the motor 31. That is, the power switch 33 is turned on, and the polishing brush 41 is driven to rotate. Then, the pin chain 100 is moved along the inner wall W.
Accordingly, the inner wall cleaning device 10 moves while cleaning the inner wall W of the drying device, following the movement of the pin chain 100.

When the inner wall cleaning device 10 follows the movement of the pin chain 100, the polishing brush 41 removes the fumes and the like attached to the inner wall W. At this time, the adhering matter removed from the inner wall W is suppressed from scattering to the rear side or the outside in the width direction from the support cover 51, and falls down.
As described above, the inner wall cleaning device 10 removes fumes and the like attached to the inner wall W of the drying device while following the movement of the pin chain 100, and cleans the inner wall W smoothly.

When the cleaning of the inner wall W is completed, the pin chain 100 is stopped, and the inner wall cleaning device 10 is removed from the pin chain 100. When removing the inner wall cleaning device 10, a procedure reverse to the above-described procedure of mounting is performed.
Thus, the inner wall cleaning device 10 is attached to and detached from the pin chain 100.

  According to the inner wall cleaning device 10 of the present embodiment described above, it is possible to efficiently and easily clean the attached matter attached to the inner wall W. That is, there is no need for the operator to manually clean the inner wall W, and the inner wall W can be efficiently and simply cleaned.

  In the present embodiment, since the main body 12 is attached to the extension pins 102A and 102B that are vertically separated from each other, rotation of the inner wall cleaning device 10 around the extension pin 102 is suppressed. Therefore, the cleaning efficiency is stably improved.

In the present embodiment, since the main body 12 is fixed to the extension pin 102A in the up-down direction and is movable with respect to the extension pin 102B, the following operation and effect can be obtained.
The pin chain 100 may be moved while bending while being wound around a sprocket inside the drying device. That is, the distance (shortest distance) between the extension pin 102A and the extension pin 102B changes between the linearly extending portion and the curvedly extending portion of the pin chain 100. Therefore, by adopting the above configuration of the present embodiment, even when the distance between the extension pins 102A and 102B changes, the inner wall cleaning device 10 can smoothly follow the movement of the pin chain 100.

  In the present embodiment, the main body 12 is detachably attached to the extension pin 102. Therefore, the inner wall cleaning device 10 can be attached to the pin chain 100 only when the inner wall W needs to be cleaned.

In the present embodiment, the main body 12 includes a driving unit 13 that drives the cleaning unit 14.
In this case, for example, the cleaning unit 14 driven by the driving unit 13 is brought into contact with the inner wall W as compared with a configuration in which the cleaning unit 14 is simply brought into contact with the inner wall W, so that the cleaning efficiency of the inner wall W is further increased. Specifically, since the driving unit 13 drives the polishing brush 41 to rotate, the contact amount between the polishing brush 41 and the inner wall W per a predetermined movement amount of the pin chain 100 can be increased, and the cleaning efficiency is improved. Increase. Since the polishing brush 41 has a sandpaper portion on the surface, the inner wall W can be efficiently and easily cleaned.

  In the present embodiment, the drive unit 13 causes the motor 31 to rotate the polishing brush 41 of the cleaning unit 14 around an axis extending in the front-rear direction. For example, unlike the present embodiment, the contact area between the polishing brush 41 and the inner wall W according to the present embodiment is different from the case where the polishing brush 41 is rotated around the axis along the vertical direction or the axis along the width direction. Can be secured widely. Therefore, the cleaning efficiency is improved.

  In the present embodiment, since the drive unit 13 includes the battery 32 that supplies power to the motor 31, it is not necessary to supply power from outside the device when driving the motor 31. Therefore, the inner wall cleaning device 10 is easy to handle, and the cleaning operation can be further facilitated.

In the present embodiment, for example, even when the distance between the inner wall W and the extension pin 102 fluctuates during the movement of the pin chain 100, the urging unit 16 causes the polishing brush 41 of the cleaning unit 14 to move through the main unit 12 to the inner wall. Energize forward toward W. For this reason, the cleaning unit 14 is pressed against the inner wall W and continues to contact.
Further, when the polishing brush 41 is worn, the urging portion 16 moves the main body 12 toward the inner wall W according to the wear amount of the polishing brush 41. Therefore, even when the polishing brush 41 is worn, 41 is pressed against the inner wall W and keeps in contact.
For this reason, the cleaning operation of the inner wall W is stabilized.

  In the present embodiment, the cleaning unit 14 has a polishing member having abrasive particles dispersed on the surface, and specifically, a polishing brush 41 having a sandpaper portion on the surface is used as the polishing member. Therefore, the inner wall W can be efficiently and easily cleaned.

  In the present embodiment, the cleaning cover unit 15 covers the cleaning unit 14. For this reason, the cleaning cover unit 15 can suppress the attachments removed from the inner wall W by the cleaning unit 14 from adhering to the pin chain 100. Specifically, since the support cover 51 covers the polishing brush 41 from at least the rear side, it is possible to suppress the adhered matter removed from the inner wall W by the polishing brush 41 from adhering to the pin chain 100.

In the present embodiment, since the cleaning cover unit 15 has the plurality of wheels 52 rolling on the inner wall W, the cleaning cover unit 15 moves smoothly along the inner wall W. That is, when the wheel 52 rolls on the inner wall W, the inner wall cleaning device 10 can move smoothly on the inner wall W. This makes it easier for the inner wall cleaning device 10 to stably follow the movement of the pin chain 100.
Specifically, the pin chain 100 has low rigidity and is easily bent. For this reason, when the polishing brush 41 gets over a projection or the like of the inner wall W, the posture of the inner wall cleaning device 10 is likely to collapse, and the movement of the inner wall cleaning device 10 may become unstable. Therefore, by providing the wheels 52 on the cleaning cover 15 as in the present embodiment, the posture of the inner wall cleaning device 10 is less likely to collapse even when the polishing brush 41 climbs over a protrusion or the like, and the movement of the inner wall cleaning device 10 is stabilized. . Therefore, cleaning of the inner wall W can be performed smoothly.

  In the present embodiment, when viewed from the front-back direction, the plurality of wheels 52 are arranged on both sides in the up-down direction and both sides in the width direction with the rotation axis of the polishing brush 41 as a center. Accordingly, the wheels 52 travel stably on the inner wall W, so that the posture of the inner wall cleaning device 10 is less likely to collapse, and the movement of the inner wall cleaning device 10 following the pin chain 100 is stabilized.

  In the present embodiment, the distance between the plurality of wheels 52 arranged apart from each other in the vertical direction is larger than the distance between the plurality of wheels 52 arranged apart from each other in the width direction. Therefore, the running stability of the wheels 52 rolling on the inner wall W is increased, and the cleaning of the inner wall W by the cleaning unit 14 can be performed smoothly and stably.

In the present embodiment, the cleaning cover 15 is movable in the front-rear direction with respect to the main body 12, and the plunger 28 urges the cleaning cover 15 toward the inner wall W in the front-rear direction.
In this case, the plunger 28 has a function as a suspension for the wheels 52. The wheel 52 is pressed against the inner wall W by the plunger 28 via the cleaning cover 15, and the wheel 52 stably rolls on the inner wall W. Further, since the main body 12 and the cleaning cover 15 are relatively movable in the front-rear direction, the cleaning unit 14 is attached as described above according to the amount of wear when the polishing brush 41 of the cleaning unit 14 is worn. When pressed against the inner wall W by the urging portion 16, the main body portion 12 and the cleaning cover portion 15 are moved closer to each other in the front-rear direction. Can be brought into close contact with the inner wall W.

  In the present embodiment, since the cleaning cover 15 is swingably supported with respect to the main body 12, the cleaning cover 15 is attached to the main body 12 when the wheel 52 climbs over the undulations or protrusions of the inner wall W. As a result, the cleaning cover portion 15 can smoothly move along the inner wall W. Thereby, the posture at the time of cleaning of the inner wall cleaning device 10 is stabilized, and the inner wall W can be efficiently cleaned.

  In the present embodiment, since the cleaning cover portion 15 has the magnet portion 53 facing the inner wall W with a gap, the cleaning cover portion 15 is stably pressed against the inner wall W by the attraction force (magnetic force) of the magnet portion 53. Can be. Further, since the magnet 53 does not contact the inner wall W, the movement of the inner wall cleaning device 10 is stabilized.

  In the present embodiment, since the magnet 53 is disposed between the cleaning unit 14 and the wheel 52 when viewed from the front-back direction, the magnet 53 is prevented from protruding outward in the width direction from the wheel 52. For this reason, the collision of the magnet portion 53 with a protrusion or the like of the inner wall W is suppressed, and the movement of the inner wall cleaning device 10 is stabilized.

  Note that the present invention is not limited to the above-described embodiment. For example, as described below, a configuration change or the like can be made without departing from the spirit of the present invention.

  In the above-described embodiment, the example in which the cleaning unit 14 includes the polishing brush 41 has been described. However, the embodiment is not limited thereto. The cleaning unit 14 only needs to have a configuration capable of removing extraneous matter adhering to the inner wall W. For example, the cleaning unit 14 has a configuration of spraying powder dry ice on the inner wall W and a configuration of blasting the inner wall W. You may.

  In the above-described embodiment, an example has been described in which the support cover 51 covers the cleaning unit 14 from the rear side and the outside in the width direction. For example, the support cover 51 may cover the entire outer periphery of the cleaning unit 14.

  In the above-described embodiment, an example in which the cleaning cover unit 15 includes the four wheels 52 has been described. However, the embodiment is not limited thereto. For example, the cleaning cover unit 15 may include two rotating rollers extending in the width direction, and the two rotating rollers may be arranged on the upper side and the lower side of the cleaning unit 14 so as to be vertically separated from each other.

  In addition, the configurations (components) described in the above-described embodiments, modifications, and the like may be combined without departing from the spirit of the present invention. Changes are possible. The present invention is not limited by the above-described embodiments, but is limited only by the scope of the claims.

  ADVANTAGE OF THE INVENTION According to the inner wall cleaning device of this invention, the adhering substance which adhered to the inner wall can be efficiently and simply cleaned. Therefore, it has industrial applicability.

  DESCRIPTION OF SYMBOLS 10 ... Inner wall cleaning device, 12 ... Body part, 13 ... Drive part, 14 ... Cleaning part, 15 ... Cleaning cover part, 16 ... Urging part (first urging part), 28 ... Plunger (Second urging part) ), 31 motor, 32 battery, 41 polishing brush (polishing member), 52 wheels, 53 magnet part, 100 pin chain, 101 roller chain, 102 extension pin, 102A extension pin (first) Extension pin), 102B ... Extension pin (second extension pin), W ... Inner wall

Claims (17)

An inner wall cleaning device attached to a pin chain arranged along the inner wall, the inner wall cleaning device cleaning the inner wall while moving in the first direction together with the pin chain,
Of the pin chain, from the roller chain extending in the first direction, a main body attached to an extension pin intersecting the first direction and projecting in the second direction toward the inner wall,
A cleaning unit that is supported by the main body unit and removes extraneous matter adhering to the inner wall. The inner wall cleaning device according to claim 1,
The inner wall cleaning device, wherein the main body is attached to a first extension pin and a second extension pin which are arranged apart from each other in the first direction among the plurality of extension pins of the pin chain. The inner wall cleaning device according to claim 2,
The inner wall cleaning device, wherein the main body is fixed to the first extension pin in the first direction and is movable with respect to the second extension pin. It is an inner wall cleaning device according to any one of claims 1 to 3,
The inner wall cleaning device, wherein the main body is detachably attached to the extension pin. It is an inner wall cleaning device according to any one of claims 1 to 4,
A driving unit that drives the cleaning unit,
The inner wall cleaning device, wherein the main body unit includes the driving unit. The inner wall cleaning device according to claim 5,
The inner wall cleaning device, wherein the driving unit has a motor that rotates the cleaning unit around an axis along the second direction. The inner wall cleaning device according to claim 6,
The inner wall cleaning device, wherein the driving unit has a battery that supplies power to the motor. The inner wall cleaning device according to any one of claims 1 to 7,
The main body is movably attached to the extension pin in the second direction,
An inner wall cleaning device, comprising: a first urging portion for urging the main body portion toward the inner wall in the second direction. It is an inner wall cleaning device according to any one of claims 1 to 8,
The inner wall cleaning device, wherein the cleaning unit includes a polishing member having abrasive particles dispersed on a surface. It is an inner wall cleaning device according to any one of claims 1 to 9,
An inner wall cleaning device comprising a cleaning cover supported by the main body and covering the cleaning unit. The inner wall cleaning device according to claim 10,
The inner wall cleaning device, wherein the cleaning cover unit has a plurality of wheels rolling on the inner wall. The inner wall cleaning device according to claim 11,
As viewed from the second direction, the plurality of wheels are arranged on both sides in the first direction, with the cleaning portion as the center, and on both sides in a third direction orthogonal to the first direction, respectively. Cleaning device. An inner wall cleaning device according to claim 12,
The inner wall cleaning device, wherein a distance between the plurality of wheels arranged apart from each other in the first direction is larger than a distance between the plurality of wheels arranged apart from each other in the third direction. It is an inner wall cleaning device according to any one of claims 11 to 13,
The cleaning cover portion is movably supported in the second direction with respect to the main body portion,
The inner wall cleaning device, wherein the main body has a second urging portion for urging the cleaning cover toward the inner wall in the second direction. An inner wall cleaning device according to claim 14,
The inner wall cleaning device, wherein the cleaning cover is swingably supported with respect to the main body. It is an inner wall cleaning device according to any one of claims 10 to 15,
The inner wall cleaning device, wherein the cleaning cover unit has a magnet unit facing the inner wall with a gap. The inner wall cleaning device according to claim 16,
The cleaning cover unit has a plurality of wheels rolling on the inner wall,
The inner wall cleaning device, wherein the magnet unit is disposed between the cleaning unit and the wheel when viewed from the second direction.

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