JP3545069B2 - Cylindrical inner surface cleaning device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a cylindrical inner surface cleaning device.
[0002]
[Prior art and its problems]
2. Description of the Related Art Conventionally, cleaning work for a cylindrical inner surface, for example, a pipe inner surface, generally relies on manual labor. That is, a tool having a brush planted at the tip of the rod-shaped member is used, inserted into the pipe, and repeatedly pushed or pulled in the axial direction by human power. Thus, the brush having elasticity rubs the inner surface of the pipe, so that dirt is removed.
However, such a conventional cleaning tool for the inner surface of a tube relies on manual labor, so that the cleaning efficiency is extremely poor, and a large number of people are required for the operation of removing severe dirt.
[0003]
As a conventional cylindrical inner surface cleaning device, there is one disclosed in Japanese Patent Application Laid-Open No. 5-293454. This includes a vibrated body, a brush stood on an outer periphery of the vibrated body, and a vibration generating mechanism for applying vibration to the vibrated body. In such a cylindrical inner surface cleaning device, a vibrating body having a brush and a vibration generating mechanism are integrally inserted into a cylindrical inner surface, which is a cleaning target surface, and a driving force from a driving source disposed outside the cylindrical inner surface. Is transmitted to the vibration generating mechanism via the connecting member. Accordingly, the vibration generating mechanism is driven to vibrate the vibrated body, so that the brush integrated with the vibrated body vibrates. Thus, the inner cylindrical surface is cleaned by the vibrating brush. Further, since the vibration generating mechanism and the vibrating body are arranged so as to be displaced from each other in the center axis direction, the outer diameter of the vibrating body is smaller than that of the vibrating body having a built-in vibration generating mechanism. Thus, it is possible to relatively satisfactorily cope with cleaning of a small-diameter cylindrical inner surface.
[0004]
However, in such a conventional cylindrical inner surface cleaning device, the vibration generating mechanism includes a shaft member, a vibration mechanism that applies axial vibration to the shaft member, and a housing that houses the vibration mechanism and the shaft member. And a guide cylinder member integrated with the housing, and the vibrated body is provided on the outer periphery of the guide cylinder member so as to be capable of only relative movement in the axial direction. A guide cylinder member and a vibrating member are arranged on the outer peripheral side of a shaft member directly vibrated by the vibrating mechanism, and a brush material is mounted on the vibrating member via a brush holder.
[0005]
For this reason, the vibrated body having the brush material has a large diameter, and it is difficult to clean the small-diameter cylindrical inner surface.
In addition, since the brush member is attached to the single vibrating member, only the cleaning of the single cylindrical inner surface can be performed, and the pair of cylindrical inner surfaces are connected to each other with the central axis parallel. In cleaning the cylindrical inner surface, it is necessary to perform cleaning for each cylindrical inner surface, and there is a technical problem that the cleaning efficiency is poor.
[0006]
[Means for Solving the Problems]
The present invention has been made in view of such a conventional technical problem, and has the following configuration.
The invention according to claim 1 includes a vibrated body 11, a vibration generating mechanism 13 built in the vibrated body 11 for applying vibration to the vibrated body 11, and a rotary drive source connected to the rear side of the vibration generating mechanism 13. And a rotary driving force from the rotary drive source 32 is supplied to the vibration generating mechanism 13 to vibrate the vibrated body 11, and is provided at a front side of the vibrated body 11. Align the central axis and relative A shaft-like member 31 rotatably projected; It protrudes forward from the vibrated body 11. A cylindrical inner surface cleaning device comprising: a brush mounted on an outer periphery of the shaft-shaped member.
The invention according to claim 2 is characterized in that the vibration generating mechanism 13 is an eccentric rotary pendulum 13a that is rotatably supported with the center axis substantially aligned with the vibrated body 11, and the cylindrical inner surface according to claim 1. It is a cleaning device.
The invention according to claim 3 is a vibrated body 61, a vibration generating mechanism 13 built in the vibrated body 61 for applying vibration to the vibrated body 61, and a rotation drive source connected to the rear side of the vibration generating mechanism 13 And a rotary driving force from the rotary drive source 32 is supplied to the vibration generating mechanism 13 to vibrate the vibrated body 61, and is provided on the outer periphery of the vibrated body 61. A brush 12 attached, an auxiliary shaft member 3 attached to the vibrated body 61 via a connecting member 63a, 63b, 62a, 62b with the central axis being parallel, and a brush 42a attached to the outer periphery of the auxiliary shaft member 3, 42b, and is capable of cleaning the cylindrical inner surface 15 having an 8-shaped cross section.
The invention according to claim 4 is the cylindrical inner surface cleaning device according to claim 3, wherein the connecting members 63a, 63b, 62a, and 62b are detachably attached to the vibrating member 61 side.
[0007]
[Action]
The cylindrical inner surface cleaning device including the vibrated body 11 having the brush 12 and the vibration generating mechanism 13 is inserted into the cylindrical inner surface that is the surface to be cleaned, and the vibration generating mechanism 13 built in the vibrated body 11 is driven. The vibration generating mechanism 13 is driven by transmitting a driving force from a rotary driving source 32. As a result, the vibrated body 11 is vibrated, and the brush 12 integrated with the vibrated body 11 vibrates. If the brush 12 is moved in the axial direction of the cylindrical inner surface in this state, the brush 12 rubs and cleans the cylindrical inner surface while vibrating. That is, the brush 12 having a moderate elastic repulsion force elastically collides against the cylindrical inner surface under the high vibration of the vibration generating mechanism 13, and the minute rubbing accompanying this collision is performed in a high cycle, and the cylindrical inner surface is Is cleaned. As described above, since the cleaning of the cylindrical inner surface is performed by the vibrating brush 12, even if the cylindrical inner surface has irregularities, it is difficult to form an uncleanable portion around the irregularities. The entire inner surface is cleaned well.
[0008]
According to the first aspect of the present invention, the shaft member 31 is provided so as to be aligned with the center axis and to be rotatable around the center axis at the front side of the vibrated body 11 having the vibration generating mechanism 13 therein. Projected from the vibrated body 11 to the front side Since the brush 12 is mounted on the outer periphery of the shaft-shaped member 31, the outer diameters of the vibrated body 11 and the brush 12 are reduced. For this reason, it becomes possible to clean the small-diameter cylindrical inner surface. Since the shaft-like member 31 is provided so as to be rotatable around the central axis with respect to the vibrating member 11 together with the brush 12, the brush 12 and the brush 12 Shaft member 31 Only the rotating member prevents twisting of a connecting member such as a flexible hose connected to the rotary drive source 32.
[0009]
According to the second aspect of the present invention, if the rotary pendulum 13a which is decentered by the driving force from the rotary drive source 32 is rotationally driven, the vibrated body 11 is vibrated. 12 vibrates.
[0010]
According to the third aspect of the present invention, the vibration generating mechanism 13 is driven by the driving force from the rotary driving source 32. Thus, the vibrated body 61 is vibrated, and the brush 12 integrated with the vibrated body 61 vibrates. At the same time, the auxiliary shaft member 3 attached to the vibrated body 61 via the connecting members 63a, 63b, 62a, 62b is vibrated, and the auxiliary shaft member 3 and the brushes 42a, 42b mounted on the outer periphery of the auxiliary shaft member 3 are moved. Vibrate. Since the center axis of the vibrated body 61 to which the brush 12 is attached and the center axis of the auxiliary shaft member 3 to which the brushes 42a and 42b are attached are parallel to each other, the cylindrical inner surface 15 having an 8-shaped cross section is cleaned. be able to.
[0011]
According to the fourth aspect of the present invention, the connecting members 63a, 63b, 62a, and 62b are attached, and the cylindrical inner surface 15 having an 8-shaped cross section can be cleaned by the pair of parallel brushes 12, 42a, and 42b. If the connecting members 63a, 63b, 62a, and 62b are removed and only the brush 12 integrated with the vibrated body 61 is used, the inner surface of the circular cylinder can be cleaned.
[0012]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show a first embodiment of a cylindrical inner surface cleaning device according to the present invention. The cylindrical inner surface cleaning device includes a brush 12, a vibrated body 11, and a vibration built in the vibrated body 11. The generating mechanism 13 and the rotation drive source 32 are main components. The brush 12 is formed by spirally winding a brush material 22 tied to a heel 22a having a U-shaped cross section shown in FIG. 7 around the outer periphery of a cylindrical brush holder 18 as shown in FIGS. You.
[0013]
Here, the material of the brush material 22 is selected according to the dirt condition of the cylindrical inner surface 5 which forms the cylindrical surface shown in FIG. 1. Wire, mild steel wire, hard steel wire, carbon steel wire, boron steel wire, stainless steel wire, iron wire, plated steel wire, twisted steel wire, PC steel wire), alloy steel wire wire, copper wire wire, copper alloy wire wire ( (Phosphor bronze wire, nickel white copper wire, white copper wire, beryllium copper wire, red copper wire, brass wire, phosphorous deoxidized copper wire, tough pitch copper wire, brass wire, free-cutting brass wire), aluminum wire, aluminum alloy wire, Titanium alloy wire, titanium palladium alloy wire, tungsten wire, tungsten molybdenum alloy wire, nickel wire, dicomet wire etc. For kimono and plastic deposits, hard animal hair, a combination of hard animal hair and metal wire, hard synthetic fiber, vegetable fiber, glass fiber, etc. are adopted. Fiber, vegetable fiber, cotton cloth, etc. are employed.
[0014]
As shown in FIG. 2, the brush holder 18 is externally fitted to an intermediate portion of the shaft-shaped member 31 and supported by contacting a rear end of the brush holder 18 with a washer 18a, and front ends of washers 55a and 55b, a disc spring 56 and a nut 57. , 58.
The rear end of the shaft-like member 31 is attached to the front end of the vibrating body 11 having a substantially cylindrical shape so that the center axis can be freely rotated only around the center axis. That is, a cylindrical support member 11a is screwed and integrated with the front end of the vibrated body 11, and a shaft-like member 31 is provided between the rear end face of the support member 11a and the inward flange 11b of the vibrated body 11. The outer flange portion 31a is sandwiched with a slight gap. Numeral 59 denotes a dustproof O-ring. Thus, the shaft-like member 31 is coaxially protruded from the front end of the vibrated body 11, and is relatively rotated with respect to the vibrated body 11 in a state where dust is prevented and blind rotation is prevented by the O-ring 59. Is free.
[0015]
Further, an eccentric rotary pendulum 13a is rotatably supported in the vibrated body 11 with its center axis aligned. As shown in FIG. 3, the rotating pendulum 13a has shaft portions 13b, 13c at both front and rear ends thereof supported by rolling bearings 47, 48 so as to be rotatable within the vibrated body 11 and not to be movable in the center axis direction. ing. The rotary pendulum 13a is made of a material having a high specific gravity, and is designed to generate a high degree of vibration in the front brush member 22 by shortening the length in the central axis direction, and has a specific weight of 15 kgf / l or more. Desirably, a tungsten alloy (specific weight of about 18 to 19 kgf / l) is suitable.
[0016]
As shown in FIG. 4, an extendable connection rotary shaft 17 is connected to the shaft portion 13c at the rear end of the rotary pendulum 13a. The connection rotating shaft 17 is a cylindrical first connection rotating shaft 17a fixed to the rear end of the shaft portion 13c, and is inserted into the first connection rotating shaft 17a. And a second connection rotary shaft 17b which is connected to the first connection rotary shaft 17b so as not to rotate relatively. The first connection rotary shaft 17a and the second connection rotary shaft 17b may be connected by a connecting means which cannot rotate relative to each other and can move back and forth. What is necessary is just to connect by a deformed cross section. Reference numeral 72 denotes a spacer, and reference numeral 73 denotes a bearing that rotatably supports the shaft portion 13c on the outer cylinder 71.
[0017]
The rear end of the second connection rotary shaft 17b is rotatably supported by a bearing 70 on the inner surface of the connection fitting 30a at the front end of the flexible hose 30, and the front end of the connection fitting 30a and the rear end of the vibrating body 11 are provided. The parts are connected by an outer cylinder 71. The rear end of the second connection rotary shaft 17b is connected to the rotary drive source 32 via the flexible shaft 30b inserted in the flexible hose 30.
[0018]
When the flexible drive shaft 30b and the connection rotary shaft 17 are rotationally driven by the rotary drive source 32, the eccentric rotary pendulum 13a built in the vibrated body 11 rotates, and the vibrated body 11 vibrates in the circumferential direction. Is given. The first connection rotation shaft 17a and the second connection rotation shaft 17b of the connection rotation shaft 17 allow the flexible shaft 30b to expand and contract with the bending deformation while transmitting the rotational motion. In addition, the vibration generating mechanism 13, the vibrated body 11, the brush 12, and the like can be moved back and forth by giving a push or pull to the flexible hose 30 and the flexible shaft 30b, which are the connecting members.
[0019]
Next, the operation of the above embodiment will be described.
First, the cylindrical inner surface 5 shown in FIG. 1 is, for example, an inner surface of a launch cylinder for launching a flying object. When the brush 12 is inserted into the cylindrical inner surface 5 and the flexible shaft 30 b and the connection rotary shaft 17 are rotationally driven by the rotary drive source 32 disposed outside the cylindrical inner surface 5, the eccentricity built in the vibrated body 11 is obtained. Since the rotating pendulum 13a rotates, the vibration generating mechanism 13 operates. Since the rotary pendulum 13 a is rotatably supported in the vibrated body 11 by a pair of rolling bearings 47 and 48, the vibrated body 11 is vibrated by the operation of the vibration generating mechanism 13. When the vibrated body 11 is vibrated, the shaft member 31 protruding from the front side of the vibrated body 11 is vibrated. Therefore, the brush holder 18 integrated with the shaft member 31 is vibrated, and the brush 12 Vibrates mainly in the circumferential direction.
[0020]
As a result, the brush members 22 rub against the cylindrical inner surface 5 forming a cylindrical surface while being vibrated, and are cleaned. That is, each brush material 22 having an appropriate elastic repulsive force collides elastically with the cylindrical inner surface 5, and the minute rubbing caused by this collision is performed in a high cycle, and the cylindrical inner surface 5 is cleaned. Since the brush 12 has the brush material 22 spirally wound around the outer periphery of the brush holder 18, the cylindrical inner surface cleaning device provided with the brush 12 advances, and each brush material 22 elastically collides with the cylindrical inner surface 5. After being pushed back, the brush member 22 advances again and the operation of elastically colliding each brush material 22 against the cylindrical inner surface 5 is repeated, and the cylindrical inner surface 5 forming the cylindrical surface is cleaned.
[0021]
In this manner, the circumferential vibration of each brush material 22 and the forward / backward movement are combined, so that the corners of the uneven portion existing on the cylindrical inner surface 5 are also cleaned well. In addition, the winding direction of the spiral brush and the rotation direction of the rotary drive source 32 are opposite to each other. For example, the brush 12 is wound clockwise, and the rotary drive source 32 is rotated counterclockwise to give the brush 12 a circumferential vibration. If so, the brush 12 moves forward. Pushing or pulling can be applied to the connecting tool including the flexible hose 30 and the flexible shaft 30b to forcibly move the brush 12 in the axial direction of the cylindrical inner surface 5. The cleaning function is satisfactorily exhibited by applying a pushing or pulling force to the connecting tool consisting of the flexible hose 30 and the flexible shaft 30b so as to force the brush 12 to move back and forth in a short stroke.
[0022]
In this manner, since the cylindrical inner surface 5 is cleaned by the brush material 22 that vibrates in a complicated manner, even when the cylindrical inner surface 5 has an uneven portion, a groove, or the like, the peripheral portion of the uneven portion or the like is present. Therefore, the entire surface of the cylindrical inner surface 5 is cleaned satisfactorily and uniformly. If the brush material 22 is impregnated with a neutral detergent or the like for cleaning, the cleaning effect is further improved.
[0023]
In addition, during the cleaning operation by the brush 12, the brush 12, particularly accompanied by vibration in the circumferential direction, may cause a rotational movement, and the brush holder 18 and the shaft member 31 may rotate gently around the central axis together. . In such a case, the shaft member 31 rotates while being supported by the inner peripheral surface of the support member 11a of the vibrated body 11. At this time, the relative movement of the brush holder 18 and the shaft-like member 31 moving back and forth in the center axis direction with respect to the vibrating member 11 is caused by the outward flange portion 31a of the shaft-like member 31 being vibrated with the rear end face of the support member 11a. It is suppressed by being sandwiched between the body 11 and the inward flange portion 11b. When the shaft-like member 31 rotates with respect to the supporting member 11a of the vibrated body 11, dust enters the inside of the vibrated body 11 from between the two, and wears the sliding friction surfaces of the rolling bearings 47, 48 and the like. Although there is a tendency, intrusion of dust from this portion is well prevented by the O-ring 59.
[0024]
As described above, since the brush holder 18 and the shaft-like member 31 are rotatable with respect to the support member 11a of the vibrated body 11, even when the brush 12 is caused to rotate in accordance with cleaning, the vibrated body is 11, the outer cylinder 71 and the flexible hose 30 do not rotate, so that twisting of the connecting tool is prevented.
[0025]
FIGS. 8 to 11 show a second embodiment of the cylindrical inner surface cleaning apparatus according to the present invention, and the same reference numerals are given to substantially the same functional portions as those of the first embodiment. This cylindrical inner surface cleaning device is used for cleaning the cylindrical inner surface 15 having an 8-shaped cross section shown in FIGS. 9 and 10 like a cylinder of a twin-screw kneader for kneading a resin. 12, 42a and 42b are provided in parallel. One brush 12 is attached to a vibrated body 61 that is vibrated by a built-in vibration generating mechanism 13. The vibrating member 61 has a substantially cylindrical shape, and the brush 12 is mounted on the outer periphery of the vibrating member 61. The brush 12 has a structure similar to that shown in FIGS. 5 to 7, and is configured by spirally winding a plurality of brush members 22 around an outer periphery of a brush holder 18.
[0026]
The brush holder 18 is externally fitted to an intermediate portion of the vibrated body 61, the rear end face of the brush holder 18 is brought into contact with the annular step 61 a of the vibrated body 61, and the front end face of the brush holder 18 is fitted to the washer 80. By contacting and pressing the washer 80 with a pair of nuts 81 and 82, the washer 80 is fixed to the outer periphery of the vibrated body 61. 83 is a set screw for stopping the rotation of the nut 82, and 84 is a pin for fixing the brush holder 18 to the vibrated body 61.
[0027]
In addition, a rotating shaft 77 is rotatably supported in the vibrated body 61 with the central axis aligned. The rotating shaft 77 has an eccentric rotating pendulum 13a integrally and coaxially at its front end. The eccentric rotary pendulum 13a has its shaft portions 13b, 13c at both front and rear ends thereof supported by rolling bearings 47, 48 so as to be rotatable within the vibrated body 61 and immovable in the center axis direction. Are rotatably supported in the vibrated body 61 and an outer cylinder 68 described later. Thus, the rotary pendulum 13a built in the vibrated body 61 is rotated by driving the rotation shaft 77 to apply vibration in the circumferential direction to the vibrated body 61, so that the vibration generating mechanism 13 is constituted. ing.
[0028]
The rear end of the rotating shaft 77 is connected to the connecting rotating shaft 78 by a width across flats so as not to be relatively rotatable and to be freely movable back and forth. The rotary shaft 77 and the connection rotary shaft 78 may be connected by a connecting means that cannot rotate relatively and can move back and forth. It may be combined. The rear end of the connection rotating shaft 78 is rotatably supported by the bearing 70 on the inner surface of the connection fitting 30a at the front end of the flexible hose 30, and is connected to the front end of the connection fitting 30a and the rear end of the vibrating member 61. Are connected by an outer cylinder 68. The rear end of the connection rotary shaft 78 is connected to the rotary drive source 32 via a flexible shaft 30b inserted in the flexible hose 30. The distal end of the connection fitting 30a is fixed to the rear end of the outer cylinder 68.
[0029]
When the flexible shaft 30b, the connection rotating shaft 78, and the rotating shaft 77 are rotationally driven by the rotation driving source 32, the eccentric rotating pendulum 13a built in the vibrated body 61 rotates, and A circumferential vibration is applied. Also, by pushing or pulling the flexible hose 30 and the flexible shaft 30b, which are the connecting tools, the cylindrical inner surface cleaning device including the vibrated body 61, the brush 12, the vibration generating mechanism 13, and the like is moved forward and backward. Can be.
[0030]
The outer cylinder 68 and the rear end of the vibrated body 61 are coupled so as to be relatively unmovable and relatively rotatable in the central axis direction. That is, the sliding bearing 87 is fixed to the inner peripheral surface of the rear end portion of the vibrated body 61, the inner peripheral surface of the sliding bearing 87 rotatably supports the front end of the outer cylinder 68, and faces inward at both front and rear ends. The rear end portion of the annular member 60 having the flange portion is fixed to the rear end portion of the outer cylinder 68 by a set screw 23, and the inward flange portion at the front end portion is interposed with the O-ring 67 through the vibrating member 61. Are engaged with the front end face of the projection to suppress relative movement in the direction of the central axis. The annular member 60 is divided into two parts, but is integrated by fixing each of the second divided connecting members 62a and 62b described later to each of the annular members 60.
[0031]
Then, a guide brush 94 is mounted on the exposed surface of the rear end of the outer cylinder 68. The guide brush 94 is constituted by a cylindrical support member 93 on which the brush material 22 is erected, and the support member 93 is fixedly attached to the outer peripheral surface of the outer cylinder 68 with a set screw 97, and the annular member 60 and the outer It has a function of preventing the cylinder 68 from directly contacting the cylindrical inner surface 5 and cleaning the cylindrical inner surface 5. The outer shape of the brush material 22 of the guide brush 94 substantially matches the maximum outer shape of the brush material 22 of the brush 12.
[0032]
Further, the first connecting members 63a and 63b and the second connecting members 62a and 62b are fixed to the exposed surfaces of the vibrated body 61 and the outer cylinder 68 on both front and rear sides of the annular member 60, respectively. As shown in FIG. 9, the first connecting members 63a and 63b are divided into two parts, one end of which is positioned by a pin 102, and is fixed to the outer cylinder 68 by a plurality of screws 101. The ends are integrally assembled by bolts 100 and positioned at the rear end of the auxiliary shaft member 3 by keys 103. The first connecting members 63a and 63b are fixed to the rear end of the auxiliary shaft member 3 by a pair of nuts 95 and 96 as shown in FIG.
[0033]
As shown in FIG. 10, the second connecting members 62a and 62b are divided into two parts, and form a pair of glasses in a combined state. One end of the second connecting members 62a and 62b is fixed to the outer periphery of the front end surface of the annular member 60 by bolts (not shown), and the other end of the second connecting members 62a and 62b is fixed to the outer peripheral surface of the tubular member 43 by bolts 105. They are tightened together. As shown in FIG. 10, an auxiliary shaft member 3 is attached to the center of the cylindrical member 43 so as not to be rotated by a key 107.
[0034]
Thus, the auxiliary shaft member 3 is attached to the vibrating body 61 via the first connecting members 63a, 63b and the second connecting members 62a, 62b with the central axis parallel to the rotating shaft 77 and the vibrating body 61. Can be A pair of brushes 42a and 42b are attached to the outer periphery of the intermediate portion of the auxiliary shaft member 3 as the front and rear sides of the cylindrical member 43. The front brush 42a is configured by winding the brush material 22 around a cylindrical brush holder 28a by a predetermined angle range, and the rear brush 42b is configured by winding the brush material 22 around the cylindrical brush holder 28b. It is configured by being wound by a predetermined angle range. Specifically, the brush material 22 of each of the brushes 42a and 42b is wound in a range of 240 degrees farther from the rotation shaft 77, that is, on the left side in FIG. Since the brushes 42a and 42b are used for cleaning the cylindrical inner surface 15 having an 8-shaped cross section together with the brush 12 directly vibrated by the vibration generating mechanism 13, the brushes 42a and 42b can be adapted to the shape of the cylindrical inner surface 15. It is desirable to wind over as large an angle range as possible.
[0035]
The rear brush 42b is a cylindrical member that is fixed to the central portion of the auxiliary shaft member 3 so as to be non-rotatable by bringing the rear surface of the brush holder 28b into contact with the annular step surface at the rear end of the auxiliary shaft member 3. The front surface of the brush holder 28b is attached to the rear annular step surface 43 so that the front surface of the brush holder 28b is in contact with the rear surface, and the rear end of the brush holder 28b is fixed to the auxiliary shaft member 3 by a pin 104.
[0036]
The front-side brush 42a has a rear surface of the brush holder 28a in contact with a forward annular step surface of the cylindrical member 43, and a front surface of the brush holder 28a has a rearward annular surface of the pressing member 44 fitted to the front end of the auxiliary shaft member 3. The brush holder 28a is fixed to the cylindrical member 43 by a pin 106 at the rear end of the brush holder 28a. The pressing member 44 is fixed to the front end of the auxiliary shaft member 3 by nuts 45 and 46.
[0037]
Next, the operation of the above embodiment will be described.
As shown in FIGS. 9 and 10, the cylindrical inner surface 15 is, for example, a cylinder of a twin-screw kneader, and has an 8-shaped cross section. In this type of cylinder, it is necessary to perform a cleaning operation for removing the plastic adhered to the inner surface of the cylinder in accordance with a change in grade, color, type, and the like of the plastic. First, the brushes 12, 42a, and 42b are inserted into the cylindrical inner surface 15, and the rotary drive source 32 disposed outside the cylindrical inner surface 15 is rotationally driven. The rotational drive of the rotary drive source 32 rotates the flexible shaft 30b, the connection rotary shaft 78, and the rotary shaft 77, and rotates the eccentric rotary pendulum 13a, so that the vibration generating mechanism 13 operates. Since the rotary pendulum 13a is rotatably supported in the vibrated body 61 by a pair of rolling bearings 47 and 48, the vibrated body 61 and the brush holder 18 are vibrated by the operation of the vibration generating mechanism 13. As a result, the brush 12 vibrates in the circumferential direction.
[0038]
The outer cylinder 68 is also excited by the vibration of the vibrated body 61, and the auxiliary shaft member 3, the cylindrical member 43, and the like are also excited via the first connecting members 63a and 63b and the second connecting members 62a and 62b. The brushes 42a and 42b vibrate in the circumferential direction. The auxiliary shaft member 3 is sandwiched between the other ends of the first connecting members 63a and 63b as described above, and one end of the first connecting members 63a and 63b is fixed to the outer cylinder by screws 101 and pins 102. 68. As described above, the cylindrical member 43 integrated with the auxiliary shaft member 3 is sandwiched between the other ends of the second connecting members 62a and 62b, and one end of the second connecting members 62a and 62b is It is attached to the front end face.
[0039]
As a result, the brush material 22 of each of the brushes 12, 42a, 42b rubs against the cylindrical inner surface 15 while vibrating mainly in the circumferential direction and is cleaned. That is, each brush material 22 having an appropriate elastic repulsion collides elastically with the cylindrical inner surface 15, and the minute rubbing accompanying this collision is performed in a high cycle, and the cylindrical inner surface 15 is cleaned. The brush 12 mounted on the vibrated body 61 has the brush material 22 spirally wound around the outer periphery of the brush holder 18, so that the cylindrical inner surface cleaning device provided with the brush 12 moves forward and each brush material 22 is moved into the cylindrical inner surface. 15, the brush material 22 is advanced again after being pushed back, and the brush material 22 elastically collides with the cylindrical inner surface 15. The operation of cleaning the cylindrical inner surface 15 having an 8-shaped cross section is repeated. Is The brush material 22 of the brushes 42a and 42b attached to the auxiliary shaft member 3 can also be wound around the brush holders 28a and 28b so as to form a part of a spiral.
[0040]
In this manner, the vibration in the circumferential direction of each brush material 22 and the forward / backward movement are combined, so that the corners of the uneven portion existing on the cylindrical inner surface 15 are also cleaned well. Thus, a cleaning function similar to that of the first embodiment can be obtained.
[0041]
If the first connecting members 63a and 63b and the second connecting members 62a and 62b are removed, and the brushes 42a and 42b are removed from the vibrated body 61 and the outer tube 68, the first inner member 15 is replaced with the cylindrical inner surface 15 having an 8-shaped cross section. It can be used for cleaning the cylindrical inner surface 5 forming the cylindrical surface shown in the embodiment. In this case, during the cleaning operation by the brush 12, the brush 12, which particularly vibrates in the circumferential direction, may simultaneously rotate, and the brush holder 18 and the vibrated body 61 may rotate slowly around the central axis. In such a case, the vibrated body 61 rotates with respect to the outer cylinder 68 while being supported by the inner peripheral surface of the slide bearing 87. At this time, the relative movement of the vibrated body 61 in the center axis direction with respect to the outer cylinder 68 is suppressed by the annular member 60 in a state where dust is prevented by the O-ring 67, and the vibrated body 61 is moved. The relative movement of the sliding bearing 87 in the central axis direction retreating with respect to the outer cylinder 68 is suppressed by the rear end surface of the slide bearing 87 abutting on the outer cylinder 68. When the vibrated body 61 rotates with respect to the outer cylinder 68, dust enters from between the vibrated body 61 and the outer cylinder 68, and tends to wear the sliding friction surfaces of the various bearings 47, 48, 70. However, the intrusion of dust from this portion is well prevented by the O-ring 67.
[0042]
As described above, since the vibrated body 61 is rotatable with respect to the outer cylinder 68, even when the brush 12 causes a rotational movement with the cleaning, the outer cylinder 68, the connection fitting 30a, the flexible hose 30 and The connecting member consisting of the flexible shaft 30b does not rotate, and twisting of the connecting member is prevented. The second connecting members 62a and 62b have one ends fixed to the outer periphery of the front end surface of the annular member 60, and the vibrating member 61 is always rotatable. Therefore, the cylindrical inner surface 15 having an 8-shaped cross section is cleaned. Also, rotation is allowed.
[0043]
In the above-described embodiment, the eccentric rotary pendulum 13a is provided as the vibration generating mechanism 13 and driven by the rotary drive source 32. However, various types of vibration generating mechanisms may be employed. The vibration direction of the body 61 is not limited to the circumferential direction, and substantially the same cleaning action can be obtained by giving vibrations in all directions such as an axial direction, a radial direction, and a tangential direction.
[0044]
【The invention's effect】
As understood from the above description, according to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the brush and the vibrating member have a small diameter, and the small-diameter cylindrical inner surface can be cleaned.
According to the third aspect of the present invention, a pair of brushes vibrated by a single vibrated body are mounted in parallel, so that the cylinder of the twin-screw kneading machine can be cleaned by the cylindrical inner surface cleaning device having a simple structure. It is possible to efficiently perform the cleaning of the eight-shaped cylindrical inner surface as described above.
[Brief description of the drawings]
FIG. 1 is a view showing a partially omitted cylindrical inner surface cleaning device according to a first embodiment of the present invention.
FIG. 2 is a sectional view showing a front end of the cylindrical inner surface cleaning device.
FIG. 3 is a sectional view showing an intermediate portion of the cylindrical inner surface cleaning device.
FIG. 4 is a sectional view showing a rear end portion of the cylindrical inner surface cleaning device.
FIG. 5 is a view showing a brush similarly.
FIG. 6 is a sectional view showing the brush.
FIG. 7 is a sectional view showing the brush material.
FIG. 8 is a sectional view showing a cylindrical inner surface cleaning device according to a second embodiment of the present invention.
FIG. 9 is a sectional view taken along line IX-IX of FIG. 8;
FIG. 10 is a sectional view taken along line XX of FIG. 8;
FIG. 11 is a sectional view taken along line XI-XI of FIG. 8;
[Explanation of symbols]
3: auxiliary shaft member, 5, 15: cylindrical inner surface, 11, 61: vibrated body, 12, 42a, 42b: brush, 13: vibration generating mechanism, 13a: eccentric rotary pendulum, 77: rotary shaft, 18, 28a, 28b: brush holder, 22: brush material, 31: shaft member, 32: rotational drive source, 62a, 62b: second connecting member (connecting member), 63a, 63b: first connecting member (connecting member).

Claims (4)

A vibrating body (11), a vibration generating mechanism (13) built in the vibrating body (11) for applying vibration to the vibrating body (11), and connected to a rear side of the vibration generating mechanism (13). A rotary driving source (32), and a rotary driving force from the rotary driving source (32) is supplied to the vibration generating mechanism (13) to vibrate the vibrated body (11). A shaft member (31) having a central axis aligned with the front side of the vibrated body (11) and protruding relative to the vibrated body (11) so as to be freely rotatable around the central axis ; A brush (12) attached to the outer periphery of the shaft member (31) provided . 2. The cleaning of a cylindrical inner surface according to claim 1, wherein the vibration generating mechanism (13) is an eccentric rotary pendulum (13a) rotatably supported with the center axis substantially aligned with the vibrated body (11). apparatus. A vibrating body (61), a vibration generating mechanism (13) built in the vibrating body (61) for applying vibration to the vibrating body (61), and connected to a rear side of the vibration generating mechanism (13). A rotary driving source (32), and a rotary driving force from the rotary driving source (32) is supplied to the vibration generating mechanism (13) to vibrate the vibrated body (61). Then, the brush (12) attached to the outer periphery of the vibrated body (61) was attached to the vibrated body (61) via connecting members (63a, 63b, 62a, 62b) with the central axis parallel. It has an auxiliary shaft member (3) and brushes (42a, 42b) mounted on the outer periphery of the auxiliary shaft member (3), and is capable of cleaning the cylindrical inner surface (15) having an 8-shaped cross section. Cylindrical inner surface cleaning device. The cylindrical inner surface cleaning device according to claim 3, wherein the connecting member (63a, 63b, 62a, 62b) is detachably attached to the vibrated body (61).

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