JP7129850B2 - Inner wall cleaning device - Google Patents

Description

The present invention relates to an inner wall cleaning device.

Conventionally, for example, a drying apparatus for cylindrical bodies disclosed in Patent Document 1 is known. The cylindrical body is a can body for a two-piece can with an outer surface coating. The drying device introduces hot air into the main body of the device while conveying a cylindrical can body with a bottom by a pin chain to dry the paint applied to the can body.

JP-A-6-159939

Fume (attachment) adheres and accumulates on the inner wall of the drying apparatus. Fume is solidification of synthetic resin volatilized from the paint on the can body. Since the can body is conveyed by the pin chain and passes near the inner wall, there is a risk that fumes will adhere to the can body. For this reason, workers regularly manually wipe off the fumes on the inner walls to clean them, but the workload is heavy and the efficiency is low.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide an inner wall cleaning device capable of efficiently and easily cleaning the deposits adhering to the inner wall.

One aspect of the present invention is an inner wall cleaning device that is attached to a pin chain arranged along an inner wall and cleans the inner wall while moving in a first direction together with the pin chain, wherein: a body portion attached to an extension pin projecting from the roller chain extending in the first direction in a second direction crossing the first direction and projecting toward the inner wall; a driving portion mounted on the body portion; a cleaning unit that is driven by the driving unit and removes deposits adhering to the inner wall.

In one aspect of the invention, an 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 part can come into contact with the inner wall to clean the inner wall of deposits. As a result, the inner wall can be cleaned efficiently and easily without the need for an operator to manually clean the inner wall as in the conventional art.
In addition, for example, compared to a configuration in which the cleaning portion is simply brought into contact with the inner wall, the cleaning portion driven by the driving portion is brought into contact with the inner wall, so that the cleaning efficiency of the inner wall is further enhanced.

In the inner wall cleaning device described above, it is preferable that the main body portion 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 that are spaced apart in the first direction, the inner wall cleaning device is prevented from rotating around the extension pin. Therefore, the cleaning efficiency is stably enhanced.

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

The pin chain is sometimes stretched over sprockets inside the dryer and moves while bending. That is, the distance (shortest distance) between the first extension pin and the second extension pin changes between the straight portion and the curved portion of the pin chain. Therefore, by adopting the above configuration, the inner wall cleaning device can smoothly follow the movement of the pin chain even when the distance between the first extension pin and the second extension pin changes.

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

In this case, the inner wall cleaning device can be attached to the pin chain only when cleaning of the inner wall is required.

In the inner wall cleaning device described above, it is preferable that the drive section has a motor that rotates the cleaning section around an axis along the second direction.

In this case, since the cleaning part contacts the inner wall while rotating around the axis along the second direction, it is possible to secure a large contact area between the cleaning part and the inner wall. Therefore, cleaning efficiency is improved.

In the above inner wall cleaning apparatus, it is preferable that the driving section has a battery that supplies power to the motor.

In this case, no power needs to be supplied from outside the device to drive the motor. Therefore, the inner wall cleaning device can be easily handled, and the cleaning work can be facilitated.

In the above inner wall cleaning device, the main body is attached to the extension pin so as to be movable in the second direction, and includes a first biasing part that biases the main body toward the inner wall in the second direction. is preferred.

In this case, the first urging portion urges the main body portion and the cleaning portion toward the inner wall. For example, even if the distance between the inner wall and the extension pin fluctuates during movement of the pin chain, the main body and the cleaning part are urged toward the inner wall, so that the cleaning part is pressed against the inner wall and continues to be in contact. Therefore, the cleaning work of the inner wall is stabilized.

In the inner wall cleaning device, the cleaning section preferably has a polishing member having a surface on which abrasive grains are dispersed.

In this case, the inner wall can be cleaned efficiently and easily by using a rotating polishing brush or the like having a sandpaper portion on the surface as the polishing member.

The inner wall cleaning device preferably includes a cleaning cover portion supported by the main body portion and covering the cleaning portion.

In this case, the cleaning cover section can prevent the attached matter removed from the inner wall by the cleaning section from adhering to the pin chain.

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

In this case, the cleaning cover moves smoothly along the inner wall. That is, the inner wall cleaning device can move smoothly on the inner wall by rolling the wheels 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 above inner wall cleaning device, when viewed from the second direction, the plurality of wheels are arranged on both sides of the first direction and on both sides of the third direction perpendicular to the first direction, centering on the cleaning section. It is preferable that they are arranged respectively.

In this case, since the wheels stably run 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 following the pin chain is stabilized.

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

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

In the above inner wall cleaning device, the cleaning cover portion is supported so as to be movable in the second direction with respect to the main body portion, and the main body portion biases the cleaning cover portion toward the inner wall side in the second direction. It is preferable to have a second biasing portion.

In this case, the second biasing portion functions as a wheel suspension. The second biasing portion presses the wheel against the inner wall via the cleaning cover portion, and the wheel stably rolls on the inner wall. Further, since the main body and the cleaning cover are relatively movable in the second direction, the cleaning section is pressed against the inner wall by the first biasing section, for example, according to the amount of wear when the cleaning section wears. When the main body part and the cleaning cover part are brought closer together in the second direction, the cleaning part can be brought into close contact with the inner wall while the wheels are stably brought into contact with the inner wall.

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

In this case, when the wheel rides over undulations or projections of the inner wall, the cleaning cover swings with respect to the main body, allowing the cleaning cover to move smoothly along the inner wall. As a result, the posture of the inner wall cleaning device during cleaning is stabilized, and the inner wall can be cleaned efficiently.

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

In this case, the cleaning cover portion can be stably pressed against the inner wall by the attractive force (magnetic force) of the magnet portion. In addition, since the magnet portion does not come into contact with the inner wall, the movement of the inner wall cleaning device is stabilized.

In the inner wall cleaning device, the cleaning cover part has a plurality of wheels that roll on the inner wall, and the magnet part is arranged between the cleaning part and the wheels when viewed from the second direction. is preferred.

In this case, the magnet portion is prevented from protruding outside the wheel. For this reason, the magnet portion is prevented from colliding with the protrusions of the inner wall, and the movement of the inner wall cleaning device is stabilized.

According to the inner wall cleaning device of one aspect of the present invention, deposits adhering to the inner wall can be efficiently and easily cleaned.

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

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

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

The extension pin 102 protrudes from the side plate 101s of the roller chain 101 and extends linearly toward the inner wall W. As shown in FIG. A plurality of extension pins 102 are provided on roller chain 101 at intervals in the direction in which roller chain 101 extends. A 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 .
A cylindrical can body with a bottom is hooked to and held by the extension pin 102 . As the roller chain 101 moves, the can body is conveyed through the drying apparatus.

In this embodiment, the direction in which the roller chain 101 extends is called the vertical direction (first direction, X direction). The roller chain 101 moves upward in FIG. 1 when the sprocket rotates. That is, in this 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 that crosses the vertical direction and faces the inner wall W. That is, the extension pin 102 extends in a direction crossing the vertical direction. In this 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 pin 102 extends is called the front-rear direction (second direction, Y direction). In the front-rear direction, the tip side of the extension pin 102 is called the front side (+Y), and the base side of the extension pin 102 is called the rear side (-Y). That is, the front side is the direction from the roller chain 101 to the inner wall W of the dryer, and the rear side is the direction from the inner wall W to the roller chain 101 .

A direction perpendicular to the up-down direction and the front-rear direction is called a width direction (third direction, Z direction). In the width direction, the direction closer to the roller chain 101 is called the inner side in the width direction, and the direction away from the roller chain 101 is called the outer side in the width direction.

The vertical direction (upper side, lower side), the front-back direction (front side, rear side), and the width direction (inner side, outer side) described above are simply names for explaining the relative positional relationship of each part, and the actual positional relationship etc. , and are not limited to the arrangement relationships and the like indicated by these names.

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

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

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

The drive unit 13 rotationally drives the cleaning unit 14 . The drive unit 13 has a motor 31 , a battery 32 and a power switch 33 .
The motor 31 is a drive source that rotates the cleaning unit 14 . A permanent magnet DC motor or the like is used for the motor 31, for example. The central axis of the output shaft of the motor 31 is shown as L in the figure. The output shaft of the motor 31 extends along the front-rear 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 extending in the front-rear direction.

The battery 32 is a storage battery that supplies electric power (direct current) to the motor 31 . For the battery 32, for example, a lithium ion secondary battery or the like is used.
A power switch 33 is electrically connected to the motor 31 and the battery 32 . The power switch 33 is operated by the user to switch ON and OFF of power supply from the battery 32 to the motor 31 .

The cleaning part 14 has a polishing brush 41 for cleaning the inner wall W and is arranged on the front side of the main body part 12 .
The polishing brush (polishing member) 41 is a disk-shaped member, and has a sandpaper section with abrasive grains dispersed on its surface. The polishing brush 41 is connected to the output shaft of the motor 31 via a brush mounting 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 shown as N in the figure. Thereby, the polishing brush 41 is rotationally driven by the motor 31 .
In this embodiment, the central axis L of the output shaft of the motor 31 and the central axis N of the rotating shaft of the polishing brush 41 are arranged at positions overlapping the roller chain 101 when viewed from the front-rear direction.

The body portion 12 is attached to the extension pin 102 of the pin chain 100 . The body portion 12 is attached to an extension pin (first extension pin) 102A and an extension pin (second extension pin) 102B, which are arranged apart from each other in the vertical direction, among the plurality of extension pins 102 of the pin chain 100 . In the example of this embodiment, the body portion 12 is detachably attached to the extension pin 102 .

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

The plates 21A and 21B are a pair of plate-like members bridged between the extension pin 102A and the extension pin 102B. The plates 21A and 21B have flat plate shapes extending in a direction perpendicular to the front-rear direction. Plates 21A and 21B have substantially the same shape as each other. In the example of this embodiment, the plates 21A and 21B are rectangular plates. The length of the plates 21A and 21B in the vertical direction is longer than the length in the width direction.
Of the pair of plates 21A and 21B, one plate 21A is arranged on the front side and the other plate 21B is arranged 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 parallel to each other.

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

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

By inserting the extension pin 102A between the grooves 21c and 22c and closing the open/close 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 thumbscrew 23. As shown in FIG. 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.

Plates 21A and 21B attached to extension pin 102A are fixed to extension pin 102A in the vertical direction and width direction. That is, the body portion 12 is fixed to the extension pin 102A in the vertical direction and the width direction. Also, the plates 21A and 21B attached to the extension pin 102A are movable in the front-rear direction with respect to the extension pin 102A.

As shown in FIG. 4, the lower surfaces of the plates 21A and 21B are each provided with a slit-shaped groove 21d extending upward from the lower surface. 21 d of groove|channels are extended along the front-back direction. An extension pin 102B is inserted into the groove 21d. The width of groove 21d is slightly larger than the diameter of extension pin 102A.

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

A through-hole or the like that penetrates the plates 21A and 21B in the front-rear direction is provided in an intermediate portion between both ends in the vertical direction of the plates 21A and 21B. The motor accommodating portion 25 is inserted through the through hole of the plate 21A. A power switch 33 is arranged 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 fixed to the plates 21A and 21B.
The base block 24 is provided with two through holes that accommodate the motor 31 and the battery 32 . The two through holes of the base block 24 extend along the front-rear direction.

The motor housing portion 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 fixed to the base block 24 while accommodating the motor 31 . As a result, the motor 31 is fixed to the base block 24 with the output shaft of the motor 31 extending 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 its axis. Plunger holder 26 holds a plurality of plungers 28 at the front end of plunger holder 26 .

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

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

The rod 28a has its rear end held by the plunger holder 26 and extends forward. The rod 28a is held by the plunger holder 26 so as to be movable in the front-rear direction. A front end portion of the rod 28 a is fixed to the cleaning cover portion 15 .
The coil spring 28b is supported by the plunger holder 26 at its rear end and arranged on the outer circumference of the rod 28a. A front end portion of the coil spring 28b contacts the cleaning cover portion 15 from the rear side. The coil spring 28b can expand and contract along the rod 28a. The coil spring 28b applies its biasing force (elastic force) in the front-rear direction.

When the cleaning cover portion 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 portion 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 section 15 has a support cover 51 , wheels 52 and a magnet section 53 . The cleaning cover portion 15 has a plurality of wheels 52 . The cleaning cover portion 15 has a plurality of magnet portions 53 .

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

The support cover 51 is arranged 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 also supports the wheels 52 and the magnets 53 .

The support cover 51 is arranged on the front side of the plunger holder 26 and connected to the four plungers 28 . Specifically, the front end of the rod 28 a is fixed to the support cover 51 .
The individual expansion and contraction of the four plungers 28 allows the support cover 51 to move forward and backward with respect to the plunger holder 26 and to swing. That is, the cleaning cover portion 15 is supported so as to be movable in the front-rear direction with respect to the main body portion 12 . Also, the cleaning cover portion 15 is swingably supported with respect to the main body portion 12 .
The biasing force (elastic force) of the coil spring 28 b of the plunger 28 acts from the plunger holder 26 toward the support cover 51 . As a result, the support cover 51 is pushed forward.

The wheels 52 roll on the inner wall W. The wheels 52 are freely rollable on the inner wall W in the vertical direction. The wheels 52 are, for example, silicone rubber rollers. The wheels 52 are rotatably arranged inside the bent portion 51b of the support cover 51 in the width direction. Axles of the wheels 52 extend 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 this embodiment, two wheels 52 are provided on each of the pair of bent portions 51b (that is, four wheels in total). The two wheels 52 are arranged apart from each other in the vertical direction at the bent portion 51b. A pair of wheels 52 are arranged at both ends of the bent portion 51b in the vertical direction.

As shown in FIG. 3 , the plurality of wheels 52 are arranged on both sides in the vertical direction and on both sides in the width direction with the cleaning unit 14 as the center when viewed in the front-rear direction. In the example of this embodiment, the four wheels 52 are arranged symmetrically in the vertical direction and the width direction with the output shaft of the motor 31 as the center. In other words, the four wheels 52 are arranged on a circumference with 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 greater than the distance between the plurality of wheels 52 arranged apart from each other in the width direction.
The four wheels 52 contact the inner wall W of the drying device and rotate when the inner wall cleaning device 10 is conveyed inside the drying device together with the pin chain 100 .

The magnet portion 53 is fixed to the flat plate portion 51 a 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 therebetween. The magnet part 53 has a permanent magnet at least at its front end. A portion of the magnet portion 53 other than the front end portion may not be a permanent magnet. In the example of this embodiment, the support cover 51 is provided with four magnet portions 53 . The four magnet portions 53 are arranged inside the four wheels 52 in the width direction. The wheel 52 has a portion that protrudes forward with respect to the magnet portion 53 . As shown in FIG. 3 , the magnet portion 53 is arranged between the cleaning portion 14 and the wheel 52 when viewed from the front-rear 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 conveyed inside the drying device. The magnet portion 53 presses the support cover 51 toward the inner wall W by generating an attractive force with the inner wall W. As shown in FIG. Thereby, the four wheels 52 can be brought into close contact with the inner wall W. As shown in FIG.

As shown in FIG. 1, the biasing portion (first biasing portion) 16 is attached to the extension pin 102A and the extension pin 102B, respectively, and is attached to the extension pins 102A and 102B so that the body portion 12 faces forward. force.
The biasing portion 16 has a coil spring 61 , a spring holder 62 and a spring stopper 63 .

The coil springs 61 are arranged on the outer peripheries of the extension pins 102A and 102B, respectively. Also, the coil spring 61 is arranged 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 contracted to the maximum in the front-rear direction is indicated by a dashed line in FIG. As shown in FIG. 1 , in the example of the present embodiment, the plate 21B can stroke over substantially the entire front-rear direction between the spring stopper 63 and the roller chain 101 .

Spring holder 62 is arranged between plates 21A and 21B and contacts plate 21A. Spring holders 62 are attached to extension pin 102A and extension pin 102B, respectively. As shown in FIGS. 6(a) and 6(b), the spring holder 62 is disc-shaped. The spring holder 62 has a large diameter portion and a small diameter portion. 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 positioned behind the large diameter portion. A front end portion of the coil spring 61 is fitted to 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 pin 102A and the extension pin 102B are inserted into the groove 62a. The spring holder 62 is movable in the longitudinal direction with respect to the extension pins 102A and 102B with the extension pin 102A or the extension pin 102B inserted into the groove 62a.

A spring stopper 63 is arranged between the plates 21A, 21B and fixed to the extension pins 102A, 102B. Spring stoppers 63 are attached to extension pin 102A and extension pin 102B, respectively. As shown in FIGS. 7(a) and 7(b), the spring stopper 63 is generally disc-shaped as a whole. The spring stopper 63 has a large diameter portion and a small diameter portion. The small-diameter portion has a smaller diameter than the large-diameter portion and is positioned in front of the large-diameter portion. A rear end portion of the coil spring 61 is fitted to 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 semicircular pieces. The spring stopper 63 has a through hole 63c positioned between the pair of members 63A and 63B and extending in the front-rear direction. The spring stopper 63 inserts the extension pin 102A and the extension pin 102B through the through hole 63c, and the extension pin 102A and the extension pin 102B are sandwiched between the pair of members 63A and 63B. Thereby, the spring stopper 63 is fixed to the extension pin 102A and the extension pin 102B.
The attachment position of the spring stopper 63 in the front-rear direction can be arbitrarily adjusted by loosening or tightening 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. A spring holder 62 is arranged on the front side of the coil spring 61 and a spring stopper 63 is arranged on the rear side of the coil spring 61 .
Since the spring stopper 63 is fixed to the extension pin 102A and the extension pin 102B, the biasing force (elastic force) of the coil spring 61 acts forward through the spring holder 62. As shown in FIG. Thereby, the biasing portion 16 biases the body portion 12 and the cleaning portion 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 attached to the extension pins 102A and 102B while the pin chain 100 is stopped.

First, the biasing portion 16 is attached to the extension pins 102A and 102B. A 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 body portion 12 is brought close to the pin chain 100, and the extension pin 102B is inserted into the groove 21d of the plates 21A and 21B. At this time, the biasing portion 16 is arranged between the plates 21A and 21B.
The open/close 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 open/close lever 22 is closed and fixed with a thumbscrew 23 .

Next, the spring stopper 63 is fixed to the extension pins 102A and 102B. Specifically, the pair of members 63A and 63B of the spring stopper 63 are fastened together with screw members to sandwich 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 biasing force of the biasing portion 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 to rotate the polishing brush 41 . Then, the pin chain 100 is moved along the inner wall W.
Thereby, the inner wall cleaning device 10 follows the movement of the pin chain 100 and moves while cleaning the inner wall W of the drying device.

When the inner wall cleaning device 10 follows the movement of the pin chain 100, the polishing brush 41 removes deposits such as fumes adhering to the inner wall W. At this time, the adhering matter removed from the inner wall W is prevented from scattering to the rear side of the support cover 51 and to the outside in the width direction, and falls downward.
In this manner, the inner wall cleaning device 10 follows the movement of the pin chain 100 and cleans the inner wall W smoothly by removing deposits such as fumes adhering to the inner wall W of the drying device.

After cleaning the inner wall W, the pin chain 100 is stopped and the inner wall cleaning device 10 is removed from the pin chain 100.例文帳に追加When detaching the inner wall cleaning device 10, the above-described mounting procedure is reversed.
In this manner, 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, deposits adhering to the inner wall W can be efficiently and easily cleaned. That is, the inner wall W need not be manually cleaned by the operator, and the inner wall W can be cleaned efficiently and easily.

In the present embodiment, the main body 12 is attached to the extension pins 102A and 102B that are spaced apart in the vertical direction, so that the inner wall cleaning device 10 is prevented from rotating around the extension pin 102 . Therefore, the cleaning efficiency is stably enhanced.

In this embodiment, the main body part 12 is fixed to the extension pin 102A and is movable with respect to the extension pin 102B in the vertical direction, so that the following effects are obtained.
The pin chain 100 is sometimes stretched over sprockets inside the drying device and moves while bending. That is, the distance (shortest distance) between the extension pin 102A and the extension pin 102B varies depending on whether the pin chain 100 extends linearly or curvedly. Therefore, by adopting the above configuration of the present embodiment, the inner wall cleaning device 10 can smoothly follow the movement of the pin chain 100 even when the distance between the extension pins 102A and 102B changes.

In this embodiment, the body portion 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 this embodiment, the main body part 12 mounts the driving part 13 that drives the cleaning part 14 .
In this case, compared to a configuration in which the cleaning portion 14 is simply brought into contact with the inner wall W, for example, the cleaning portion 14 driven by the drive portion 13 is brought into contact with the inner wall W, so the cleaning efficiency of the inner wall W is further enhanced. Specifically, since the drive unit 13 rotates the polishing brush 41, it is possible to increase the amount of contact between the polishing brush 41 and the inner wall W per a predetermined amount of movement of the pin chain 100, thereby improving the cleaning efficiency. increase. Since the polishing brush 41 has a sandpaper portion on its surface, the inner wall W can be cleaned efficiently and easily.

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

In this embodiment, since the drive unit 13 has the battery 32 that supplies power to the motor 31, there is no need to supply power from the outside of the device to drive the motor 31. FIG. Therefore, the inner wall cleaning device 10 can be easily handled, and the cleaning work can be facilitated.

In this embodiment, for example, even if the distance between the inner wall W and the extension pin 102 fluctuates during movement of the pin chain 100, the biasing portion 16 pushes the polishing brush 41 of the cleaning portion 14 through the main body portion 12 to the inner wall. bias forward toward W. For this reason, the cleaning part 14 is pressed against the inner wall W and continues to be in contact with it.
Further, when the polishing brush 41 wears, the biasing portion 16 moves the body portion 12 toward the inner wall W in accordance with the amount of wear of the polishing brush 41. 41 is pressed against the inner wall W and remains in contact.
Therefore, the cleaning work of the inner wall W is stabilized.

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

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

In this embodiment, the cleaning cover portion 15 has a plurality of wheels 52 that roll on the inner wall W, so the cleaning cover portion 15 moves along the inner wall W smoothly. That is, the wheels 52 roll on the inner wall W, so that 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. Therefore, when the polishing brush 41 climbs over the protrusions of the inner wall W, the posture of the inner wall cleaning device 10 is likely to be lost, and the movement of the inner wall cleaning device 10 may become unstable. Therefore, by providing the cleaning cover portion 15 with the wheels 52 as in the present embodiment, the posture of the inner wall cleaning device 10 is less likely to be lost even if the polishing brush 41 climbs over a protrusion or the like, and the movement of the inner wall cleaning device 10 is stabilized. . Therefore, the inner wall W can be cleaned smoothly.

In the present embodiment, a plurality of wheels 52 are arranged on both sides in the vertical direction and on both sides in the width direction centering on the rotation axis of the polishing brush 41 when viewed from the front-rear direction. As a result, the wheels 52 run 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 this embodiment, the distance between the plurality of wheels 52 arranged apart from each other in the vertical direction is greater 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 inner wall W can be cleaned smoothly and stably by the cleaning unit 14 .

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

In the present embodiment, the cleaning cover portion 15 is swingably supported with respect to the main body portion 12. Therefore, when the wheels 52 get over the undulations and protrusions of the inner wall W, the cleaning cover portion 15 is attached to the main body portion 12. The cleaning cover part 15 can move smoothly along the inner wall W by swinging against it. As a result, the posture of the inner wall cleaning device 10 during cleaning is stabilized, and the inner wall W can be cleaned efficiently.

In this embodiment, since the cleaning cover portion 15 has the magnet portion 53 facing the inner wall W with a gap, the attractive force (magnetic force) of the magnet portion 53 can stably press the cleaning cover portion 15 against the inner wall W. can be done. Moreover, since the magnet part 53 does not contact the inner wall W, the movement of the inner wall cleaning device 10 is stabilized.

In the present embodiment, the magnet portion 53 is arranged between the cleaning portion 14 and the wheel 52 when viewed from the front-rear direction, so the magnet portion 53 is prevented from protruding outward in the width direction from the wheel 52 . Therefore, the collision of the magnet portion 53 with the protrusions of the inner wall W is suppressed, and the movement of the inner wall cleaning device 10 is stabilized.

It should be noted that the present invention is not limited to the above-described embodiments, and, for example, as described below, changes in configuration can be made without departing from the gist of the present invention.

In the above-described embodiment, an example in which the cleaning unit 14 has the polishing brush 41 has been described, but the present invention is not limited to this. The cleaning unit 14 may have a configuration capable of removing deposits adhering to the inner wall W. For example, the cleaning unit 14 may have a configuration that sprays dry ice powder onto the inner wall W or a configuration that blasts the inner wall W. may

Although the support cover 51 covers the cleaning part 14 from the rear side and the outside in the width direction in the above-described embodiment, the present invention is not limited to this. For example, the support cover 51 may cover the entire outer circumference of the cleaning section 14 .

Although the cleaning cover part 15 has four wheels 52 in the above-described embodiment, the present invention is not limited to this. For example, the cleaning cover portion 15 may have two rotating rollers extending in the width direction, and the two rotating rollers may be arranged above and below the cleaning portion 14 and separated from each other in the vertical direction.

In addition, within the scope that does not deviate from the spirit of the present invention, each configuration (component) described in the above-described embodiments, modifications, notes, etc. may be combined, and addition, omission, replacement, and other Change is possible. Moreover, the present invention is not limited by the embodiments described above, but only by the claims.

According to the inner wall cleaning device of the present invention, deposits adhering to the inner wall can be cleaned efficiently and easily. Therefore, it has industrial applicability.

DESCRIPTION OF SYMBOLS 10... Inner-wall cleaning apparatus 12... Main-body part 13... Drive part 14... Cleaning part 15... Cleaning cover part 16... Biasing part (first urging part) 28... Plunger (second urging part ), 31... Motor, 32... Battery, 41... Polishing brush (polishing member), 52... Wheel, 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 (16)

An inner wall cleaning device attached to a pin chain arranged along an inner wall and cleaning the inner wall while moving in a first direction together with the pin chain,
a body portion attached to an extension pin that projects in a second direction that intersects the first direction and extends toward the inner wall from the roller chain of the pin chain that extends in the first direction;
a driving unit mounted on the main body;
an inner wall cleaning device, comprising: a cleaning unit driven by the driving unit to remove deposits 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 that are spaced 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 body portion is fixed to the first extension pin and movable relative to the second extension pin in the first direction. The 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. The inner wall cleaning device according to any one of claims 1 to 4 ,
The inner wall cleaning device, wherein the drive section has a motor that rotates the cleaning section around an axis along the second direction. The inner wall cleaning device according to claim 5 ,
The interior wall cleaning apparatus, wherein the drive unit has a battery that powers the motor. The inner wall cleaning device according to any one of claims 1 to 6 ,
The main body is attached to the extension pin so as to be movable in the second direction,
An inner wall cleaning device comprising a first biasing portion that biases the main body portion toward the inner wall side in the second direction. The inner wall cleaning device according to any one of claims 1 to 7 ,
The inner wall cleaning device, wherein the cleaning unit has a polishing member having a surface on which abrasive grains are dispersed. The inner wall cleaning device according to any one of claims 1 to 8 ,
An inner wall cleaning device comprising a cleaning cover portion supported by the main body portion and covering the cleaning portion. The inner wall cleaning device according to claim 9 ,
The inner wall cleaning device, wherein the cleaning cover portion has a plurality of wheels that roll on the inner wall. An inner wall cleaning device according to claim 10 , comprising:
When viewed from the second direction, the plurality of wheels are arranged on both sides in the first direction and on both sides in a third direction perpendicular to the first direction, with the cleaning portion as the center. cleaning equipment. An inner wall cleaning device according to claim 11 , comprising:
The inner wall cleaning device, wherein the distance between the plurality of wheels spaced apart from each other in the first direction is greater than the distance between the plurality of wheels spaced apart from each other in the third direction. The inner wall cleaning device according to any one of claims 10 to 12 ,
the cleaning cover portion is supported movably in the second direction with respect to the body portion;
The inner wall cleaning device, wherein the body portion has a second biasing portion that biases the cleaning cover portion toward the inner wall side in the second direction. 14. The inner wall cleaning device of claim 13 , comprising:
The inner wall cleaning device, wherein the cleaning cover portion is swingably supported with respect to the main body portion. The inner wall cleaning device according to any one of claims 9 to 14 ,
The inner wall cleaning device, wherein the cleaning cover portion has a magnet portion facing the inner wall with a gap therebetween. 16. The inner wall cleaning device of claim 15 , comprising:
The cleaning cover portion has a plurality of wheels that roll on the inner wall,
The inner wall cleaning device, wherein the magnet portion is arranged between the cleaning portion and the wheel when viewed from the second direction.

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