JP5359683B2 - Image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing device which has an improved washing effect relating to the washing device for removing materials attached to a washing object by using a thin flat solid type washing medium. <P>SOLUTION: The washing device has a projection means for washing the washing object by projecting the washing medium having a flat surface to the washing object to cause the washing medium to collide with the washing object, wherein the projection means projects the washing object while rotating the washing medium around an axis vertical to the flat surface. Concretely, the projection means gives a first speed in the direction of the flat surface to a first area of the flat surface and gives a second speed in the direction above described to a second area of the flat surface. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cleaning device that removes deposits on an object to be cleaned using a thin flat solid cleaning medium.

Nowadays, used parts or units such as copying machines, facsimile machines, and printers are cleaned and reused. Specifically, the cleaning is to remove deposits adhering to used parts or units. The deposit is fine particle powder, for example, toner. And it is a big subject to reduce the cost and environmental load required for this washing.
For example, in the case of a wet cleaning method using water or a solvent, the energy consumption and environmental burden of the treatment of the waste liquid containing deposits and the drying treatment after the cleaning are large and the cost is high. In the case of the dry cleaning method using air blow, it is not possible to sufficiently remove the adherent with strong adhesion, and treatment such as wiping by hand after air blow is necessary.

  Accordingly, a dry cleaning apparatus using a solid cleaning medium has been proposed (see Patent Document 1). In this cleaning device, a thin and easy-to-project flaky cleaning medium is projected and circulated at high speed in a cleaning tank, thereby causing the cleaning medium to collide with the object to be cleaned and removing deposits on the object to be cleaned. .

However, the cleaning device described in Patent Document 1 uses a high-pressure compressor or blower to generate a normal airflow, but requires a large amount of energy because a large amount of high-pressure air (airflow) is used.
On the other hand, there has been proposed a polishing apparatus that causes solid abrasive grains to collide with an object to be polished without using air (see Japanese Patent Nos. 3927812, 2002-192467, and 3574593). This polishing apparatus polishes an object to be polished by applying a speed to the abrasive grains by a rotating impeller or belt and causing the abrasive grains to collide with the object to be polished. Using this polishing apparatus, it is conceivable to remove deposits on the object to be cleaned by projecting and colliding a solid cleaning medium against the object to be cleaned.
However, even if a flaky cleaning medium is projected using this polishing apparatus, a sufficient collision speed cannot be obtained for an object to be cleaned at a distance, and a sufficient cleaning effect cannot be obtained. I understood. FIG. 1 shows the state of the cleaning medium projected by this polishing apparatus. In the example of FIG. 1, the cleaning medium is in the form of a flake having a rectangular plane 10a. As shown in FIG. 1, since the area of the flat surface 10a of the lamellar cleaning medium 10 is large with respect to the mass, it is greatly decelerated due to the influence of air resistance, and as a result, a sufficient cleaning effect is obtained. Can't get.
Accordingly, an object of the present invention is to provide a cleaning device that can obtain a sufficient cleaning effect in a cleaning device that projects a cleaning medium.

  In order to achieve the object, in a cleaning apparatus having a projecting means for cleaning the cleaning object by projecting and colliding the cleaning medium having a plane onto the object to be cleaned, the projecting means applies the cleaning medium to the plane. And a cleaning device that rotates and projects around a vertical axis.

  A cleaning device that projects the cleaning medium of the present invention can provide a sufficient cleaning effect.

The figure which shows that the washing | cleaning medium which has a plane receives air resistance, and projects. The figure for showing the principle of a present Example. Another figure for showing the principle of a present Example. Sectional drawing which looked at the washing | cleaning apparatus of a present Example from the front. Sectional drawing which looked at the washing | cleaning apparatus of a present Example from the side surface. The enlarged view of the projection means of a present Example. FIG. 7A shows a case where the collision angle θ is large, and FIG. 7B shows a case where the collision angle θ is small. Sectional drawing which looked at the washing | cleaning apparatus of another Example from the front. Sectional drawing which looked at the washing | cleaning apparatus of another Example from the side. The enlarged view of the projection means of another Example. Sectional drawing which looked at the washing | cleaning apparatus of another Example from the front. Sectional drawing which looked at the washing | cleaning apparatus of another Example from the side. The enlarged view of the projection means of another Example. It is an enlarged view of a 3rd drive rotary body.

Prior to the description of the embodiments, terms will be described. The cleaning apparatus according to the present embodiment performs so-called dry cleaning that cleans the cleaning target by projecting or flying a cleaning medium having a flat surface onto the cleaning target (hereinafter referred to as “projecting”). Is. The cleaning medium having a flat surface is, for example, a lamellar cleaning medium. The cleaning of the object to be cleaned is to remove the adhering substance adhering to the object to be cleaned. The dry cleaning means that the object to be cleaned is cleaned using a flaky cleaning medium that is solid at room temperature without using a liquid such as water or a solvent as the cleaning medium. A cleaning medium having a flat surface is a thin piece of resin film, cloth, paper, metal, ceramics, etc., having an area of 1 to 1000 mm ² and a thickness of about 1 to 500 μm, rectangular, circular, elliptical, triangular, polygonal, and other thin pieces Refers to solid. As the material, size, and thickness of the cleaning medium, an appropriate one is selected and used according to the shape and material of the object to be cleaned and the nature and adhesion strength of the object adhering to the object to be cleaned. Further, the plane includes a surface having some unevenness.
For example, when the object to be cleaned is easily damaged, it is preferable to use a thin cleaning medium made of a flexible material such as a resin film. This is because the cleaning medium is bent so that it is difficult to damage the object to be cleaned. Moreover, when strong removal power, such as removal of a coating film, is required, it is preferable to use a cleaning medium having a large thickness and hardness. This is because a strong removal action can be obtained.
The object to be cleaned is an object to be cleaned. The adhering matter is dust or powder adhering to the object to be cleaned. For example, when the object to be cleaned is a part of the image forming apparatus, the attached object is toner.
Next, the principle of the cleaning apparatus of this embodiment will be described. FIG. 2 is a diagram for explaining the principle of this embodiment. In this example, the shape of the cleaning medium 20 is a thin rectangular shape, and has two planes 20a and 20b. The two planes 20a and 20b are parallel or substantially parallel. As shown in FIG. 2, an axis perpendicular to the plane 20a and / or the plane 20b is defined as an axis 20e. The projecting means of the cleaning apparatus of the present embodiment rotates the cleaning medium 20 around the axis 20e in the rotation direction A and projects it onto the object to be cleaned. As shown in FIG. 2, the attitude of the cleaning medium 20 during projection is stabilized by the rotational inertia force of the projection, the air resistance received by the flat surfaces 20a and 20b can be reduced, and the projection speed of the cleaning medium is hardly reduced. . Therefore, the cleaning apparatus of the present embodiment can improve the cleaning effect on the cleaning object. Hereinafter, the projection shown in FIG. 2 is referred to as rotational projection.
Next, an example of a technique for rotating and projecting the cleaning medium 20 is shown in FIG. FIG. 3 shows a case where the cleaning medium 20 is viewed from directly above, that is, only the plane 20a is shown. The projection means of the cleaning apparatus of the present embodiment gives, for example, a first velocity α in the direction X along the direction of the plane 20a to the first region 20c of the plane 20a and the same as the direction X in the second region 20d of the plane 20a. A second speed β is given in the direction. In FIG. 2, the first region 20c and the second region 20d are hatched. Both the first region 20b and the second region 20c are preferably closer to the edge of the cleaning medium 20, and the distance between the first region 20b and the second region 20c is preferably larger.
The value of the first speed α and the value of the second speed β are different from each other, and α> β in the example of FIG. Of the first speed α and the second speed β, the smaller speed (in this example, the second speed β) may be 0 or −. The second speed β is-in the opposite direction to the direction X (180 degrees opposite direction). That is, giving the second speed β in the direction X includes giving the second speed β in the direction opposite to the direction X and giving the speed 0 (that is, giving no speed).
In other words, the projection means gives the first pushing force F1 in the direction X along the direction of the plane 20a to the first region 20c of the plane 20a, and gives the second pushing force F2 in the direction X to the second region 20d of the plane 20a. To give. F2 is preferably smaller than F1, but may be a force in the opposite direction to F2. The value of F2 may be 0. In addition, the direction X along the direction of the plane 20a means a direction parallel to the direction of the plane 20a.
In addition, the projection speed of the cleaning medium 20 increases when the second speed β is set to 0 or when the second speed β is applied in the direction opposite to the direction X, rather than the second speed β is applied in the direction X. Therefore, in the following description, it is assumed that both the first speed α and the second speed β are given along the direction X.
In this way, the projection means of the cleaning apparatus of this embodiment can project the cleaning medium 20 by rotation. A configuration example of the projection unit will be described in the following embodiments.

  The cleaning apparatus 100 of Example 1 will be described. The object to be cleaned is fixed in the cleaning apparatus 100 and cleaned. FIG. 4 shows a cross-sectional view of the cleaning apparatus 100 according to the first embodiment when viewed from the cleaning object side. Hereinafter, a case where the cleaning device 100 is viewed from the cleaning object side is referred to as a front surface. In FIG. 4, the width direction is the X direction (X axis), the depth direction is the Y direction (Y axis), and the height direction is the Z direction (Z axis). FIG. 5 shows a cross-sectional view of the cleaning device shown in FIG. 4 as viewed from the right.

The washing tank 102 has a hollow shape, and the cross section in this example is a hexagonal hexagonal column having a taper at the bottom. In the cleaning tank 102, the cleaning medium 20, the cleaning object 104, and the like are accommodated. A mesh portion 106 and a dust collector connection portion 108 are provided on the upper surface 102 a of the cleaning tank 102.
Here, the mesh part 106 has many small holes. The mesh portion 106 is formed of a porous member made of, for example, a wire mesh, a plastic mesh, a mesh, a punch metal plate, a slit plate, a wire mesh, or the like. The small holes allow gas, powder-like deposits, and a cleaning medium 20 having a predetermined volume or less to pass therethrough. The volume of the cleaning medium 20 is reduced by colliding with an object to be cleaned, causing wear or chipping, or deterioration of elasticity due to long-term use. The gas passing through the small hole, the powdery deposit, and the cleaning medium 20 having a predetermined volume or less are discharged to the outside of the cleaning tank 102. Further, the small hole does not allow the cleaning medium 20 having a predetermined volume or more to pass therethrough. The shape of the small hole may be a circle or a slit.
Further, a dust collector connecting portion 108 is provided above the mesh portion 106, and the dust collector connecting portion 108 is connected to a dust collector (not shown). The dust collector sucks the deposits and the cleaning medium 20 that has become smaller.
Next, the supply means 110 (not shown in FIGS. 4 and 5) will be described. The supply unit 110 supplies the cleaning medium 20 to the projection unit 130. The projection unit 130 will be described later. The supply means 110 in this example includes a first supply belt 112, a second supply belt 114, and a hopper 116. Both the first supply belt 112 and the second supply belt 114 are endless belts. In this example, it is assumed that the first supply belt 112 is stretched between two rollers 112a and 112b, and the second supply belt 114 is stretched between two rollers 114a and 114b.
In this example, the first supply belt 112 is disposed above the second supply belt 114. The first supply belt 112 and the second supply belt 114 are disposed to face each other. The length of the second supply belt 114 in the depth direction (Y direction) is longer than that of the first supply belt 112. The supply belt driving means 118 rotates the rollers 112a, 112b, 114a, and 114b, so that the first supply belt 112 and the second supply belt 114 are driven. In the example of FIG. 5, the first supply belt 112 is rotationally driven in the clockwise direction, and the second supply belt 114 is rotationally driven in the direction opposite to the clockwise direction.
The cleaning medium 20 is accommodated in the hopper 116. A predetermined amount of the cleaning medium 20 is discharged from the opening 116 a provided below the hopper 116 and is loaded on the second supply belt 114. When the second supply belt 114 is rotationally driven, the cleaning medium 20 loaded on the second supply belt 114 is a space where the first supply belt 112 and the second supply belt 114 are opposed to each other (hereinafter referred to as “opposing space”). It is conveyed to. The cleaning medium 20 is transported to the projection unit 130 while being sandwiched between the first supply belt 112 and the second supply belt 114.
Further, the regulating member 120 is provided midway from the opening 116a of the hopper 116 to the facing space. The restriction member 120 restricts the position of the cleaning medium 20 in the width direction of the second supply belt 114 so that the cleaning medium 20 protrudes to the side where the first rotating body 132 is located.

Next, the projection unit 130 will be described. The projection means 130 of the present embodiment is a portion indicated by a one-dot chain line in FIG. In FIG. 6, the enlarged view of the projection means 130 is shown. The projection unit 130 of this embodiment includes a pair of first rotating bodies 132 and 134 and a pair of second rotating bodies 136 and 138. Here, the rotating body means a cylindrical body, a cone, an impeller, or other rotating body having an axial target shape that rotates around the rotation axis, and also means endless belts such as the first supply belt 112 and the second supply belt 114. To do. In this example, it is assumed that the first rotating bodies 132 and 134 are cylindrical, and the second rotating bodies 136 and 138 are endless belts.
The first rotating bodies 132 and 134 are, for example, rotors, and are integrated with the first rotating shafts 140 and 142, respectively. The first rotating bodies 132a and 132b are rotated by the rotation of the first rotating shafts 140 and 142. The first rotating shafts 140 and 142 are rotated by driving the rotor driving means 150 (see FIG. 4).

  The second rotating bodies 136 and 138 correspond to the end portions 112d and 114d (see FIG. 5) of the first supply belt 112 and the second supply belt 114, respectively. Further, the second rotating bodies 136 and 138 are rotated by the rotation of the second rotating shafts 144 and 146. That is, the second rotating shafts 144 and 146 correspond to the rollers 112a and 114a.

  Next, a projection method of the projection unit 130 will be described. As shown in FIG. 6, the cleaning medium 20 is sandwiched between the circumferential surface of the first rotating body 132, the circumferential surface of the first rotating body 134, the circumferential surface of the second rotating body 136, and the circumferential surface of the second rotating body 138. Thus, the rotation is projected by the rotation of these four rotating bodies. The cleaning medium 20 is appropriately sandwiched between these four rotating bodies by the restriction of the restriction means 120. In FIG. 3, the first plane 20a is described as having the first area 20c and the second area 20d, but the first plane 20b (a plane parallel to or substantially parallel to the first plane 20a) is also the first area. There are a region 20f and a second region 20g. The first region 20f is at a position facing the first region 20c, and the second region 20g is at a position facing the second region 20d.

  The circumferential surface of the first rotating body 132 is in pressure contact with the first region 20c, the circumferential surface of the first rotating body 134 is in pressure contact with the first region 20f, and the circumferential surface of the second rotating body 136 is the second region. The region 20d is pressed and the peripheral surface of the second rotating body 138 presses the second region 20g. Then, the rotation of the first rotating body 132, the first rotating body 134, the second rotating body 136, and the second rotating body 138 gives a speed to the cleaning medium 20, and the cleaning medium 20 is projected.

  That is, the first regions 20c and 20f are sandwiched between the pair of first rotating bodies 132 and 134, and the second regions 20d and 20g are sandwiched between the pair of second rotating bodies 136 and 138.

Here, each of the rotational speed of the first rotary member 132 is the same, and the rotational speed and _{V 1.} Further, each of the rotational speed of the second rotary member 136 and 138 are identical to the rotational speed and _{V 2.} Rotational speed _{V 1} of the first rotary member 132, the rotation speed _{V 2} of the second rotary member 136 is driven differently. In this _example, the _V 1> V _2.
Then, as shown in FIG. 3, the first region 20c is given a first speed α, the second region 20d is given a second speed β, and since V ₁ > V ₂ , α> β. Therefore, as shown in FIG. 2, the projection unit 130 can project the cleaning medium 20 by the speed difference between V ₁ and V ₂ . Further, the projection unit 130 can project the cleaning medium 20 to the cleaning object 104 by rotation.
The cleaning object 104 is held by holding means. Here, as a holding means, a human may hold the object 104 to be cleaned, or the object 104 to be cleaned may be held using a holding jig. In addition, during the cleaning of the cleaning target 104, the cleaning target 104 can be cleaned as a whole by appropriately changing the direction of the cleaning target 104 with respect to the projection unit 130. For example, the cleaning object 104 may be rotated at a predetermined speed.
During or after the cleaning of the cleaning object 104, the cleaning medium 20 that has collided with the cleaning object 104 is accumulated at the bottom of the cleaning tank 102. The collected cleaning medium 20 or a new cleaning medium 20 may be stored in the hopper 116 by a human, or the dropped cleaning medium 20 may be automatically stored in the hopper 116. In this way, the next cleaning object 104 is prepared for the cleaning process.
Further, at a collision location of the cleaning object 104 by the cleaning medium 20, an angle θ (hereinafter referred to as a collision angle) θ formed by the direction of the flat surface 20 a of the cleaning medium 20 and the surface 104 a on which the cleaning object 104 collides is obtained. The cleaning effect is different. FIG. 7 shows the difference in cleaning effect.
As shown in FIG. 7A, a case where the collision angle θ is large (for example, θ is π / 2 or a value close thereto) will be described. In this case, the edge 20h of the cleaning medium 20 collides with the cleaning object 104, and the contact area between the cleaning medium 20 and the cleaning object 104 is small. Therefore, the pressure that the cleaning medium 20 applies to the object 104 to be cleaned increases, and as a result, the collision force of the cleaning medium 20 can be increased. Therefore, it is possible to eliminate the adherent having a strong adhesion force of the cleaning object 104. Further, since the cleaning medium 20 is in the form of a thin piece, the cleaning medium 20 is bent and the force escapes, so that the cleaning object 104 is not damaged.
Further, as shown in FIG. 7B-1, the collision angle θ is small (for example, θ = π / 6), that is, the case where the cleaning medium 20 collides obliquely with the object 104 to be cleaned. explain. In this case, as illustrated in FIG. 7B-2, the cleaning medium 20 moves in contact with the object to be cleaned 104 while sliding. In FIG. 7 (B) -2, it is shown as sliding contact movement, and the direction of sliding contact movement is upward. Therefore, when the collision angle θ is small, the cleaning medium 20 moves while contacting a wide area of the cleaning target object 104 with a single collision. Therefore, deposits in a wide range of the cleaning object 104 are removed by the scraping action or rubbing action of the cleaning medium 20.
In the above description, the first rotating body 134 is rotated. However, even when there is no rotational driving force of the first rotating body 134, the rotation of the first rotating body 132 is performed when the cleaning medium 20 is sandwiched between the first rotating body 132 and the second rotating body 134. Due to the follow, the second rotating body 134 rotates. With this configuration, the rotational driving force of the first rotating body 134 can be reduced.

  Thus, the collision angle θ may be adjusted according to the characteristics of the deposit to be removed. The collision angle θ may be adjusted, for example, by changing the direction of the cleaning target 104 with respect to the projection unit 130 or using a direction changing unit (not shown) that changes the direction of the projection unit 130 with respect to the cleaning target 104. The direction changing process by the direction changing means may be performed by a human operation.

Since the cleaning medium 20 can be rotationally projected (see FIG. 2) by the projection unit 130 of the cleaning apparatus of the present embodiment, the cleaning effect of the cleaning object 104 can be improved as compared with the conventional case.
Conventionally, the cleaning medium 20 is projected on the flat surface 20a as shown in FIG. 1 due to a large air resistance, and therefore, it is very difficult to adjust the collision angle θ. However, in the case of the projection unit 130 of the cleaning apparatus of the present embodiment, since the cleaning medium 20 is rotationally projected, the plane 20a hardly receives air resistance, so that the collision angle θ can be easily changed.

A cleaning apparatus 200 according to the second embodiment will be described. FIG. 8 is a cross-sectional view of the cleaning device 200 as viewed from the front. FIG. 9 shows a cross-sectional view of the cleaning device shown in FIG. 8 as viewed from the right.
The cleaning tank of the cleaning device 200 has a double structure of an outer cylinder 202 and an inner cylinder 204. Both the outer cylinder 202 and the inner cylinder 204 have a drum shape (a cylindrical shape with a short length in the X direction). The inner cylinder 204 is accommodated in the outer cylinder 202. Further, the sliding plate 212, the projection means 230, and the like are accommodated in the inner cylinder 204.

As shown in FIG. 10, the inner cylinder 204 has a peripheral surface 204a as a mesh portion, and a circular opening 204d is formed on one surface (side wall of the cleaning tank) 204b, and faces the surface 204b. The surface 204c (side wall of the cleaning tank) to be closed is closed. The mesh portion is the same as the mesh portion 106 described in the first embodiment. As described above, the mesh portion has a large number of small holes. By the mesh part, in addition to the removed deposits, the cleaning medium 20 having a reduced volume can be discharged to the outside of the inner cylinder 204. That is, the mesh portion cleaning medium 20 having a volume greater than a predetermined (hereinafter, referred to as the first cleaning medium 20 _1.), Deposits and given the following volume of washing medium 20 (hereinafter, referred to as a second cleaning medium 20 _2. ) And the separation means 205 for separating them. Projecting means 230 of the second embodiment, a first cleaning media 20 _1, by rotating the projection against the cleaning target object 104, cleaning the cleaned object 104.

  Moreover, the washing tank side wall 204c of the inner cylinder 204 is integrated with the inner cylinder rotating shaft 208, and the inner cylinder 204 is rotated with the rotation of the rotating shaft. The inner cylinder rotating shaft 208 is rotated at a predetermined speed by a driving unit (not shown). A rib plate 214 is attached to the peripheral surface 204a of the inner cylinder 204 at a constant pitch toward the inside.

  The side wall 202b of the outer cylinder 202 is provided with a through-hole 202c through which the inner cylinder rotating shaft 208 passes. The diameter of the through hole 202c is slightly larger than the diameter of the inner cylinder rotating shaft 208. Therefore, the inner cylinder rotation shaft 208 is rotatably supported by the through hole 202c. In the example of FIG. 9, the inner cylinder 204 rotates counterclockwise.

  Further, a columnar convex portion 202a (low in height) is provided on the side wall 202d facing the side wall 202b toward the inside of the outer cylinder 202. The convex portion 202a is fitted into the opening 204b of the cleaning tank side wall 204b. The diameter of the columnar convex part 202a is slightly smaller than the diameter of the opening part 204b. Therefore, the inner cylinder 204 can rotate within the outer cylinder 202. In addition, a slidable seal member 212 such as a brush is attached to the gap formed between the opening 204b and the convex portion 202a so that the cleaning medium 20 does not leak from the gap.

An inflow port 220 is provided above the outer cylinder 202, and a suction port 222 is provided below. A dust collector (not shown) or the like is connected to the suction port 222. Deposit and the second cleaning medium 20 ₂ separated by the separation unit 205 is sucked by the dust collector. In addition, airflow is introduced from the inflow port 220 by airflow inflow means (not shown). That is, the downward airflow B is generated by the inflow of the airflow from the inlet 220 and the outflow of the airflow to the suction port 222.

The cleaning medium 20 that has been projected by the projection unit 230 and collided with the object to be cleaned 104 and the deposit fall due to gravity and airflow B. The second cleaning medium 20 ₂ in fallen cleaning medium 20 are separated by the separating means 205, is dropped from the inner cylinder 204, it is accumulated on the bottom surface of the outer cylinder 202.

Further, between the adjacent ribs (9, for example a rib ₂₁₄ 1, 214 ₂₎ is a housing section 214a for housing the first cleaning medium 20 _1. Inner tube 204 because it is rotated at a predetermined speed, the first cleaning medium 20 ₁ housed in the housing portion 214a is conveyed upward. Then, to some extent, the upper (in FIG. 9 for example, the position of the gamma) is conveyed in by the air flow B and gravity, the first cleaning medium 20 ₁ which is the conveyed falls downwardly. The first part of the cleaning medium 20 ₁ that has fallen is stacked on sliding plate 212.
The sliding plate 212 has a thin plate shape and is attached to the upper surface of the convex portion 202a. First cleaning medium 20 ₁ stacked on the sliding plate 212 is supplied to the projection unit 230 slides down over the sliding plate 212. The sliding plate 212 is attached so that the supply is properly performed. That is, the supply unit 210 according to the second embodiment includes the rotation of the inner cylinder 204, the accommodating portion 214 a generated by the adjacent rib plate 214, the airflow B, and the sliding plate 212. Further, instead of the sliding plate 212, a hopper 116 (described in the first embodiment) may be used.

Next, the projection unit 230 will be described. The projection means 230 of Example 2 is the location enclosed by the dashed-dotted line in FIG. FIG. 10 shows an enlarged view of the projection unit 230. The projection unit 230 includes N pairs of first rotating bodies 132 and 134 and N pairs of second rotating bodies 232 and 234. However, N is a natural number, and N = 4 in the example of FIG. Both the first rotating bodies 132 and 134 and the second rotating bodies 232 and 234 are rotors. In FIG. 10, dots are applied to the first rotating body and dots are not applied to the second rotating body. Further, the projection unit 230 is configured by alternately arranging a pair of first rotating bodies and a pair of second rotating bodies. The total width of the pair of first rotating bodies and the pair of second rotating bodies is preferably equal to or substantially equal to the cleaning medium 20.
Hereinafter, the first rotating body 132 will be referred to as the first driving rotating body 132, the first rotating body 134 will be referred to as the first driven rotating body 134, the second rotating body 232 will be referred to as the second driven rotating body 232, and the second rotating body 234 will be described. Is a second drive rotor 234.

  The N first drive rotators 132 are integrally formed with the first rotation shaft 240. Accordingly, the N first drive rotators 132 rotate with the rotation of the first rotation shaft 240.

  The N first driven rotating bodies 134 are rotatably held on the second rotating shaft 242. Even if the second rotating shaft 242 is rotated, the first driven rotating body 134 does not rotate. That is, the diameter of the through hole through which the second rotating shaft 242 of the first driven rotating body 134 passes is smaller than the diameter of the second rotating shaft 242.

  As shown in FIG. 10, if the cleaning medium 20 is sandwiched between the first drive rotator 132 and the first driven rotator 134, the first driven rotator 132 is driven to drive the first driven rotator 132. The rotating body 134 rotates.

  The N second drive rotators 234 are configured integrally with the second rotation shaft 242. Therefore, the N second drive rotators 134 rotate with the rotation of the second rotation shaft 242.

The N second driven rotating bodies 232 are held on the first rotating shaft 240. Even if the first rotating shaft 240 is rotated, the second driven rotating body 232 does not rotate. That is, the diameter of the through hole through which the first rotating shaft 240 of the second driven rotating body 232 passes is smaller than the diameter of the first rotating shaft 240.
As shown in FIG. 10, if the cleaning medium 20 is sandwiched between the second drive rotator 234 and the second driven rotator 232, the second drive rotator 234 is driven by the rotation drive, and the second follower is driven. The rotating body 232 rotates.

Further, the first rotating shaft 240 and the second rotating shaft 242 are rotationally driven by the rotor driving means 250. Here, the rotational speed V ₁ of the first rotary shaft is greater than the rotational speed V ₂ of the second rotary shaft. As shown in FIG. 10, the peripheral surface of the first drive rotator 132 presses against the first region 20 c, and the peripheral surface of the first driven rotator 134 presses against the first region 20 f, and the second driven rotator The peripheral surface of 232 is in pressure contact with the second region 20d, and the peripheral surface of the second drive rotor 234 is in pressure contact with the second region 20g. Thus, when the cleaning medium 20 is sandwiched between the first drive rotator 132, the first driven rotator 134, the second driven rotator 232, and the second drive rotator 234, the first drive rotator 132, the first driven rotator 134 rotates at a high speed, and the second driven rotator 232 and the second drive rotator 234 rotate at a low speed. Accordingly, the cleaning medium 20, from the speed difference between _{V 1} and _{V 2,} it is rotated projection (see FIG. 3).

  Further, N = 1, that is, one first driving rotating body, first driven rotating body 134, second driven rotating body 232, and second driving rotating body 234 may be configured.

  In the example of FIG. 8, a holding jig 262 is provided. The holding jig 262 holds the cleaning object 104. Further, the holding jig 262 is connected to the cleaning object holding and rotating means 260, and the cleaning object holding and rotating means 260 rotates the holding jig 262 at a predetermined speed, so that the cleaning object 104 is also at the predetermined speed. It is rotated. Therefore, the cleaning object 104 can be cleaned as a whole.

The projection unit 230 of the second embodiment includes a plurality of first drive rotators, a first driven rotator 134, a second driven rotator 232, and a second drive rotator 234, and thus rotates a large number of cleaning media 20. It can project and can improve a cleaning effect.
Also, it is better that the value of N is larger. First cleaning medium 20 ₁ slides down stacked on the sliding plate 212, because likely to be supplied to the projection unit 230. Therefore, it is preferable to determine the value of N so that the total width L (see FIG. 10) of the N first driving rotating bodies 132 and the second driven rotating bodies 232 is substantially equal to the width of the sliding plate 212. .

  A cleaning apparatus 300 according to the third embodiment will be described. FIG. 11 is a cross-sectional view of the cleaning device 300 as viewed from the front. FIG. 12 is a cross-sectional view of the cleaning device 300 shown in FIG. 11 as viewed from the right. The cleaning device 300 is different from the cleaning device 200 in that the projection unit 230 is replaced with a projection unit 330. Other differences are that the sliding plate 212 is replaced with a hopper 116 and that a roller feeder (material feeding device) 350 is provided. The hopper 116 may be a sliding plate 212. Further, since the supply means of the third embodiment is the same as the supply means 210 of the second embodiment, the description thereof is omitted.

  By rotating the roller feeder 350, the cleaning medium 20 in the hopper 116 can be quantitatively supplied to the projection means 330. If the hopper 116 is used, the roller feeder 350 is preferably used.

  FIG. 13 shows an enlarged view of the projection unit 330. The projection means is composed of a pair of third rotating bodies 322 and 324. Of the pair of third rotators, the third rotator 322 is a third drive rotator 322 and the third rotator 324 is a third driven rotator 324. The third drive rotator 322 and the third driven rotator 324 have a conical or truncated cone shape. In this example, it is assumed that the shape is a truncated cone. It is assumed that the third drive rotator 322 and the third driven rotator 324 have the same shape. Further, N sets of the third driving rotating body 322 and the third driven rotating body 324 may be provided. In the example of FIG. 13, N = 4.

The third drive rotator 322 is integrally formed with the rotation shaft 326, and when the first rotation shaft 326 rotates, the third drive rotator 322 also rotates. The third driven rotator 324 is rotatably held on the fixed shaft 328. The cleaning medium 20 is sandwiched between the side surface 322 a of the third drive rotator 322 and the side surface 324 a of the third drive rotator 324. In this state, when the third drive rotator 322 is rotated, the third driven rotator 324 is rotated following the rotation of the third drive rotator 322. The cleaning medium 20 is rotationally projected by the rotation of the third drive rotator 322 and the third driven rotator 324. The reason for rotational projection will be described in detail.
FIG. 14 is a perspective view of the third drive rotator 322. As shown in FIG. 14, the third drive rotator 322 has a side surface 322a. Of the two planes of the third drive rotator 322, the side surface on the flat surface 322b side with the smaller diameter is defined as the end side surface 322d, and the side surface on the plane surface 322d with the larger diameter is defined as the base side surface 322e. Further, by rotating the third drive rotor 322, the rotational speed (peripheral speed) _{V 1} of the base portion side 322e is faster than the rotational speed (peripheral speed) _{V 2} of the side surface 322d. This is because the plane 322c has a larger diameter than the plane 322b.
The third driven rotator 324 has a side surface 324a, an end side surface 324c, and a base side surface 324e, like the third drive rotator 322.
As shown in FIG. 13, the base side surface 322e of the third drive rotator 322 presses against the first region 20c, and the base side surface 324e of the third driven rotator 324 presses against the first region 20f to perform the third drive. The end side surface 322d of the rotating body 322 presses the second region 20d, and the end side surface 324d of the third drive rotating body 322 presses the second region 20g. Further, a regulating member (not shown) may be provided between the hopper 116 and the projecting means 330 so that the press contact shown in FIG.
In this state, when the third drive rotor 322 is rotated, the cleaning medium 20 by the speed difference between V ₁ and V ₂ are rotated projected. In the above description, N = 4. However, when the sliding plate 212 is used instead of the hopper 116, the total width L of the third drive rotor 322 is a sliding plate close to the width of the sliding plate 212. It is preferable to determine the value of N so as to be approximately equal to the width of 212. This is because the cleaning medium 20 loaded on the sliding plate 212 slides down and is easily supplied to the projection unit 330.
Also,
[Rotating body]
Moreover, it is preferable that at least one of the first rotating bodies 132 and 134 and the second rotating bodies 136 and 138 described in the first embodiment has flexibility. In addition, at least one of the N first driving rotating bodies 132, the first driven rotating bodies 134, the second driven rotating bodies 232, and the second driving rotating bodies 234 described in the second embodiment has flexibility. Is preferred. It is preferable that at least one of the N third driving rotating bodies 322 and the third driven rotating body 324 described in the third embodiment has flexibility.
This is because the rotating body having flexibility absorbs the thickness of the cleaning medium 20 even when the cleaning medium 20 is supplied from the supply unit to the projection unit with an increased thickness. Therefore, the rotation driving force of the rotating body does not become excessive, and the rotation projection of the cleaning medium can be stably performed by the projection unit.
In FIG. 10, the first drive rotator 132 and the first driven rotator 134 are separated from each other, and the second drive rotator 232 and the second driven rotator 234 are separated by the thickness of the cleaning medium 20. Further, in FIG. 13, the third driving rotating body 322 and the third driven rotating body 324 are shown separated by the thickness of the cleaning medium 20. The first drive rotator 132, the second drive rotator 232, and the third drive rotator 322 are collectively referred to as a drive rotator, and the first driven rotator 134, the second driven rotator 234, and the third driven rotator 324 are referred to as a drive rotator. Collectively, when the driven rotator is flexible, at least one of the drive rotator and the driven rotator may be always in contact with the drive rotator and the driven rotator. By setting the driving rotator and the driven rotator always in contact with each other, the rotation speed of the driven rotator can be stabilized, and the projection speed and the rotation speed of the cleaning medium 20 can be increased (stabilized).
[Rotation axis]
Moreover, it is preferable that at least one of the first rotating shafts 140 and 142, the second rotating shaft 144, and the second rotating shaft 146 described in the first embodiment has flexibility. Moreover, it is preferable that at least one of the first rotating shaft 240 and the second rotating shaft 242 described in the second embodiment has flexibility. Moreover, it is preferable that at least one of the first rotating shaft 326 and the second rotating shaft 328 described in the third embodiment has flexibility.
This is because, as in the case described in [Rotating body], even when the cleaning medium 20 is supplied from the supply unit to the projection unit so as to be increased in thickness, the rotating shaft having flexibility is The thickness of the cleaning medium 20 is absorbed. Therefore, the rotation driving force of the rotating body does not become excessive, and the rotation projection of the cleaning medium can be stably performed by the projection unit.
In addition, when no speed is given to the second regions 20d and 20g, the second rotating body 136, the second rotating body 138 (see FIG. 6), and the second driving rotating body (see FIG. 10) need not be rotated. The second regions 20d and 20g need only be pressed. Further, as long as the second regions 20d and 20g are in pressure contact with each other, not a rotating body but simply a pressure contact member may be used.
When a negative speed is applied to the second regions 20d and 20g, the second rotating body 136, the second rotating body 138 (see FIG. 6), and the second driving rotating body (see FIG. 10) are rotated by the first rotation. The body 132, the first rotating body 134, and the one-drive rotating body may be rotated in reverse.
In addition to the supply units 110 and 210 described in the first to third embodiments, other supply units may be used as long as the cleaning medium 20 can be supplied to the projection unit. In addition to the projection means 130, 230, and 330 described in the first to third embodiments, other projection means may be used as long as the cleaning medium can be rotated and projected. In the combination of the supply means 110 and 210 and the projection means 130, 230, and 330, combinations other than those described in the first to third embodiments may be used.

DESCRIPTION OF SYMBOLS 20 ... Cleaning medium 102 ... Cleaning tank 104 ... Cleaning object 106 ... Mesh part 108 ... Dust collector connection port 110 ... Supply means 112 ... 1st supply belt 114 ... Second supply belt 116 ... Hopper 118 ... Supply belt drive means 120 ... Restricting member 130 ... Projection means

JP 2007-029945 A

Claims (10)

In a cleaning apparatus having a projecting means for cleaning the cleaning object by projecting and colliding the cleaning medium having a flat surface onto the cleaning object,
The projection unit is a cleaning device that projects the cleaning medium by rotating the cleaning medium around an axis perpendicular to the plane. The projection means gives a first speed to the first area of the plane along the direction of the plane, and gives a second speed to the second area of the plane in the same direction as the direction,
The cleaning apparatus according to claim 1, wherein the first speed and the second speed are different. The projection means is composed of a pair of first rotating bodies and a pair of second rotating bodies,
Sandwiching the first region between the peripheral surfaces of the pair of first rotating bodies,
Sandwiching the second region between the peripheral surfaces of the pair of second rotating bodies,
The cleaning apparatus according to claim 2, wherein the first rotating body and the second rotating body have different rotation speeds.   The cleaning device according to claim 3, wherein the projection unit is configured by alternately arranging the pair of first rotating bodies and the pair of second rotating bodies.   The cleaning apparatus according to claim 3 or 4, wherein at least one of the pair of first rotating bodies and the pair of second rotating bodies has flexibility.   The cleaning according to any one of claims 3 to 5, wherein at least one of the rotation shafts of the pair of first rotating bodies and the rotation shaft of the pair of second rotating bodies has flexibility. apparatus. The projection means is a pair of third rotating bodies having a conical or frustoconical shape,
The cleaning apparatus according to claim 2, wherein the cleaning medium is sandwiched between side surfaces of the pair of third rotating bodies.   The cleaning device according to claim 7, wherein the projection unit includes a plurality of the pair of third rotating bodies.   The cleaning apparatus according to claim 8, wherein at least one of the plurality of pairs of rotating bodies has flexibility. The cleaning apparatus according to claim 8 or 9, wherein at least one of the rotation shafts of the plurality of pairs of rotating bodies has flexibility.

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