JP3196966U - Coating device - Google Patents

Abstract

An application apparatus capable of applying a liquid agent to an object efficiently and with high accuracy is provided. A coating apparatus for applying a liquid agent to an outer peripheral surface of a columnar object, the rotary shaft extending along an axis, and a liquid agent provided around the rotary shaft to hold the liquid agent. And a coating portion that forms a passage 20 between the outer peripheral surfaces of the liquid agent holding portions 5 that are opposed to each other by being provided in a plurality so that the respective axes are parallel to each other. The liquid agent supply part 3 which supplies the liquid agent L to a part, and the rotation drive part which rotationally drives the at least 1 rotating shaft 11 around an axis line are provided. [Selection] Figure 4

Description

  The present invention relates to a coating apparatus.

  When assembling machine products, it is common to use fastening parts such as bolts and nuts. By using such components, the structural components can be firmly fixed to each other. That is, if a bolt and a nut are fastened with a large torque, a firm fastening structure can be obtained.

  Here, in a machine that is used under high temperature and high pressure, such as a gas turbine engine, and is expected to be exposed to vibration and heat, the above-described fastening structure using bolts and nuts also has a corresponding accuracy. Required. Therefore, in such a machine product, specified values such as tightening torques and loosening torques of bolts and nuts in each part, and an allowable range of these values are set in advance.

  By the way, since bolts and nuts generally have some manufacturing error, even when assembled based on the above specified values and tolerances, the accuracy of the final product will vary. Is concerned. Furthermore, in a mechanical product operated in a high temperature environment such as the gas turbine engine as described above, there is a possibility that the thread portion will be burned by heat. If seizure occurs, the fastening between the members cannot be released, resulting in trouble when performing product maintenance or the like.

  As a technique for avoiding the above-described phenomenon, a method of applying a liquid agent such as grease or an anti-seizing agent to the surface of the screw portion of the bolt is known. By applying such a liquid agent to the bolts, the tightening torque and the loosening torque can be made substantially uniform at various locations, and the occurrence of seizure at the threaded portion can be suppressed.

  If a small number of bolts are required, manual application of the liquid is also sufficiently realistic. However, when a large number of these bolts are used, it is advantageous to use a jig or a machine rather than manual work from the viewpoint of maintaining the work efficiency and the uniformity of the liquid application amount.

  Thus, what was described in following patent document 1 is known as an example of the technique for apply | coating a liquid agent with respect to a target object. In Patent Document 1, in order to apply a release agent to a mold, the rotary brush is moved along the product surface of the mold while spraying the release agent from a hole provided in a shaft portion of the rotary brush. And a device used therefor are described.

Japanese Patent Laid-Open No. 08-192258

  However, when the apparatus described in Patent Document 1 is applied to a cylindrical object such as a bolt, it becomes difficult to apply the liquid agent over the entire circumferential direction of the outer peripheral surface of the object. For example, when applying a liquid agent to the whole outer peripheral surface of a target object with the apparatus described in the said literature, it is necessary to rotate target object itself with respect to a rotating brush. For this reason, when apply | coating to a large amount of objects, not only work efficiency falls, but it is difficult to keep constant the application amount of a liquid agent, and the thickness of a coating film.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a coating apparatus that can efficiently and uniformly apply a liquid agent to an object.

In order to solve the above problems, the present invention adopts the following means.
An application apparatus according to an aspect of the present invention is an application apparatus that applies a liquid agent to an outer peripheral surface of a columnar object, and includes a rotary shaft extending along an axis, and the liquid agent provided around the rotary shaft. A liquid agent holding part, and a coating part that forms a passage path between the outer peripheral surfaces of the liquid agent holding parts facing each other by being provided in a plurality so that the respective axes are parallel to each other, A liquid agent supply unit that supplies the liquid agent to the application unit; and a rotation driving unit that rotationally drives at least one of the rotation shafts about the axis.

  According to such a configuration, the liquid agent is supplied from the liquid agent supply unit to the liquid agent holding unit of the application unit. Furthermore, at least one application part is rotationally driven around the axis by the rotational drive part. In this state, the liquid agent can be uniformly applied to the columnar object by passing the object along the passage route. In addition, the object automatically moves in the passage path as the rotation shaft of the application unit rotates. Thereby, compared with the case where the liquid agent is applied manually, the operation can be performed efficiently.

  In the coating apparatus according to an aspect of the present invention, at least three of the plurality of coating units are provided, and one of the coating units has a main shaft that is rotated by the rotation driving unit. The two application portions excluding the main application portion are sub-application portions, and the two sub-application portions are respectively opposed to the outer peripheral surface of the liquid agent holding portion in the main application portion. The passage route may be formed.

  According to such a configuration, the outer peripheral surface of the target object is opposed to each other by passing through a passage between the liquid agent holding part of the main application part and the liquid agent holding part of one of the sub-application parts opposite thereto. The liquid agent is applied to the two surfaces. Subsequently, the liquid agent is applied to two surfaces other than the above two surfaces by passing through a passage between the liquid agent holding unit of the main application unit and the liquid agent holding unit of the other sub-application unit. That is, by applying the liquid agent from four directions, the liquid agent can be applied uniformly over the entire outer peripheral surface of the object.

  In the coating apparatus according to an aspect of the present invention, the rotation direction of the rotation shaft in the main application unit may be opposite to the rotation direction of the rotation shaft in the two sub coating units.

  According to such a configuration, the rotation direction of the rotation axis of the main application part is opposite to the rotation direction of the rotation axes of the two sub application parts. Thereby, seeing from the passage route, the directions of movement of the outer peripheral surfaces of the main application part and the two sub application parts can be the same. That is, a force in the same direction in the passage route is applied to the object passing through the passage route. Thereby, a target object can be moved along a passage route.

  In the coating apparatus according to an aspect of the present invention, the liquid agent holding portion in the main application portion may have an outer diameter that is different from that of the liquid agent holding portion in the sub application portion.

  According to such a configuration, more liquid agent can be included in the liquid agent holding part of the main application part. In addition, by changing the outer diameter dimension of the main application part, the dimension of the passage path can be changed according to the dimension of the object. Thereby, the versatility of a coating device can be improved.

  In the coating apparatus according to an aspect of the present invention, the liquid agent holding portion is a hair-like portion provided on an outer peripheral surface of the rotating shaft, and the hair-like portion in the main application portion is the sub-application portion. It may be formed harder than the hair-like part.

According to such a structure, since a hair-like part makes a liquid agent holding | maintenance part, more liquid agents can be included.
In addition, since the main application part is rotationally driven by the rotational drive part, it contacts the object with the greatest force. Therefore, when the hair-like part of the main application part is formed harder than the hair-like part of the sub-application part as described above, the liquid agent can be more stably applied to the object. In addition, it is possible to reduce the wear of the hair-like portion in the main application portion that accompanies aging.

  In the coating apparatus according to one aspect of the present invention, the liquid agent supply unit includes a rod nozzle that extends in parallel with the rotation shaft and has a supply hole that discharges the liquid agent toward the outer peripheral surface of the application unit. You may have.

  According to such a structure, a liquid agent can be supplied with respect to the outer peripheral surface of an application part from the supply hole of a rod nozzle. Thereby, a sufficient amount of liquid agent can be included in the application part.

  In the coating apparatus according to one aspect of the present invention, the liquid agent supply unit may include a supply nozzle that is formed inside at least one liquid agent holding unit and supplies the liquid agent to the liquid agent holding unit. Good.

  According to such a configuration, since the liquid agent is supplied from the supply nozzle formed on the inner side of the rotating shaft, the liquid agent can be sufficiently contained from the inner side in the radial direction to the outer side of the liquid agent holding part. In addition, it is possible to reduce the amount of the liquid agent that scatters around as the application unit rotates.

  An application apparatus according to an aspect of the present invention includes a guide unit that extends along the passage path and guides the object along the passage path by supporting a part of the object. Also good.

  According to such a configuration, the object is stably guided along the passage route. Thereby, the possibility that the target object deviates from the passage route can be reduced. That is, the coating apparatus can be operated more stably, and the coating operation can be made highly efficient.

  ADVANTAGE OF THE INVENTION According to this invention, the coating device which can apply | coat a liquid agent efficiently with respect to a target object can be provided.

It is a top view which shows the structure of the coating device which concerns on 1st embodiment of this invention. It is sectional drawing in the II-II line of FIG. 1 seen from the axis line O direction. It is a figure which shows the structure of the liquid supply part of the coating device which concerns on 1st embodiment of this invention. It is explanatory drawing which shows an example of operation | movement of the coating device which concerns on 1st embodiment of this invention. It is sectional drawing of the coating device which concerns on 2nd embodiment of this invention. It is a figure which shows the modification of the coating device which concerns on 2nd embodiment of this invention. It is a figure which shows the other modification of the coating device which concerns on 2nd embodiment of this invention. It is a figure which shows the structure of the coating device which concerns on 3rd embodiment of this invention. It is a principal part enlarged view of the coating device which concerns on 3rd embodiment of this invention.

[First embodiment]
Hereinafter, the coating device 1 which concerns on 1st embodiment of this invention is demonstrated. The coating device 1 is a device for applying a liquid agent L such as an anti-seizure agent or grease to the outer peripheral surface of a columnar object A such as a bolt. In the present embodiment, the object A extends along the central axis OM and has a threaded portion (not shown) formed on the outer peripheral surface thereof.
As shown in FIG. 1, the application device 1 includes a plurality of brushes 10 (application units 10), a rotation drive unit 2 that rotationally drives the plurality of brushes 10, and a liquid agent supply unit 3 that supplies the liquid agent L to the brushes 10. And comprising.

  The coating apparatus 1 according to the present embodiment includes three brushes 10 and a casing portion 4 that supports the brushes 10. Of the three brushes 10, one is the main brush 12 as the main application unit 12, and the remaining two are the sub brushes 13 (first sub brush 13A, second sub brush 13B) as the sub application unit 13. ing. Since both the main brush 12 and the sub brush 13 have the same shape, the main brush 12 will be representatively described below.

  As shown in FIG. 2, the main brush 12 is composed of a rotating shaft 11A extending along the axis O1 and a large number of fiber materials implanted so as to extend generally radially from the periphery (outer peripheral surface) of the rotating shaft 11A. Hair-like part 5 (liquid medicine holding part 5). The hair-like part 5 is formed using a relatively hard fiber material such as pig hair. Furthermore, the outer diameter dimension of the bristle part 5 (the outer peripheral surface of the bristle part 5 in the radial direction of the axis O <b> 1 is dimensioned) is generally uniform over the circumferential direction of the main brush 12. That is, the main brush 12 has a substantially cylindrical shape in external view.

In the actual coating apparatus 1, it is assumed that the length of the fiber material forming the hair-like portion 5 is slightly different for each fiber material. Therefore, the outer diameter dimension of the hair-like part 5 in the above refers to the average value of the respective dimensions (lengths) of the plurality of fiber materials. A radially outer surface of the bristle portion 5 is an outer peripheral surface 12S of the main brush 12. (Similarly, the radially outer surface of the bristle portion 5 provided on the sub brush 13 is the outer peripheral surface 13S of the sub brush 13.)
Furthermore, the dimension of the main brush 12 in the direction of the axis O1 is set sufficiently larger than the dimension in the direction of the central axis OM of the object A to which the coating apparatus 1 is applied.

  The relative positional relationship between the main brush 12 and the sub brush 13 configured as described above is set as follows. That is, as shown in FIG. 2, the two sub brushes 13 (the first sub brush 13 </ b> A and the second sub brush 13 </ b> B) are opposed to each other on the outer peripheral surfaces 13 </ b> S and 13 </ b> S and also on the outer peripheral surface 12 </ b> S of the main brush 12. It arrange | positions so that it may oppose.

  Furthermore, the line connecting the axis O1 of the main brush 12 and the axes O2 and O3 of the two sub brushes 13 has a triangular shape when viewed from the direction in which the axes O1, O2 and O3 extend. The axes O1, O2, and O3 of the main brush 12 and the sub brush 13 are parallel to each other. However, these axes O1, O2, and O3 do not necessarily need to be completely parallel to each other, and a slight error or the like is allowed as long as they are arranged so as to be substantially parallel.

  Furthermore, in the present embodiment, the first sub brush 13A and the second sub brush 13B are clockwise from the main brush 12 when viewed from one side in the axis O1 direction (the side where the brush 10 is located). The rotation axes of the first sub brush 13A and the second sub brush 13B are 11B and 11C, respectively. Furthermore, the axis O1 of the main brush 12 and the axes O2 and O3 of the sub brush 13 are collectively referred to as an axis O.

  A fixed gap is formed between the outer peripheral surface 12S of the main brush 12 and the outer peripheral surfaces 13S of the two sub brushes 13, respectively. The minimum dimension of the gap, that is, the distance between the outer peripheral surface 12S of the main brush 12 and the outer peripheral surface 13S of the sub brush 13 that is closest to each other is substantially equal to or slightly equal to the dimension in the radial direction of the object A. Is set to be smaller. Among these gaps, a gap formed between the main brush 12 and the two sub brushes 13 is a passage path 20 through which the object A passes.

  The passage path 20 includes a first passage 21 extending in a direction substantially orthogonal to a straight line connecting the axis lines O1 and O2 of the main brush 12 and the first sub brush 13A, and axis lines O1 and O3 of the main brush 12 and the second sub brush 13B. And a second passage 22 extending in a direction generally orthogonal to the connecting straight line. Here, as described above, the straight lines connecting the axis lines O1, O2, and O3 of the main brush 12 and the sub brushes 13 are generally equilateral triangles when viewed from the direction in which the axis lines O1, O2, and O3 extend. Yes. Accordingly, the first passage 21 and the second passage 22 are connected to each other at an angle of approximately 120 ° in a region including the center of gravity of the triangle formed by the central axis of each brush 10. In other words, the passage route 20 is bent in a substantially U shape when viewed from the direction of the axis O1 (O2, O3).

  Out of the both ends of the first passage 21, the end in the direction away from the second secondary brush 13 </ b> B serves as an input port 23 for the object A to be input. Here, as described above, the rotation shaft 11A of the main brush 12 and the rotation shafts 11B and 11C of the sub brush 13 are parallel to each other. Further, the separation dimension between the main brush 12 and the sub brush 13 is substantially the same as the dimension in the radial direction of the object A. Therefore, the dimension in the longitudinal direction of the insertion port 23 is substantially the same as the dimension in the extending direction of the main brush 12 and each sub brush 13. Furthermore, the dimension in the direction intersecting the longitudinal direction of the inlet 23 is substantially the same as the dimension in the radial direction of the object A. That is, the insertion port 23 has a substantially rectangular shape extending in the longitudinal direction of the main brush 12 (sub brush 13).

On the other hand, of the both ends of the first passage 21, the first passage outlet 24, which is the end opposite to the above-described inlet 23, is the second passage inlet 25 that is one end of the second passage 22. It is communicated to. An end portion of the second passage 22 opposite to the second passage inlet 25 is opened toward the outside of the coating apparatus 1, so that an outlet 26 from which the object A to which the liquid agent L is applied is taken out. ing. The outlet 26 also has a substantially rectangular shape, similar to the inlet 23 described above.
In the following description, the side where the inlet 23 is located is referred to as the upstream side of the passage route 20, and the side where the outlet 26 is located is referred to as the downstream side.

  The casing part 4 supports each brush 10 rotatably according to the above positional relationship. As shown in FIG. 1, the casing portion 4 in the present embodiment is configured by a pair of plate-like members that are arranged to face each other with a space therebetween. The rotating shafts 11A, 11B, and 11C of each brush 10 are rotatably supported through a bearing device 30 provided in the casing portion 4.

  The rotation drive unit 2 is a device for driving the brush 10 to rotate. Specifically, as shown in FIG. 1, the rotation drive unit 2 includes a drive source 31 having a drive shaft 32 that rotates like an electric motor and the rotation shaft 11 of the coating unit 10. And a transmission unit 33 for transmitting to the network.

  The transmission unit 33 includes a shaft coupling 34 that connects the drive shaft 32 of the drive source 31 and the rotary shaft 11A of the main brush 12, and the rotary motion transmitted to the rotary shaft 11A of the main brush 12 to the sub brush 13 (first sub And a gear 35 that respectively transmits the brush 13A and the second sub brush 13B).

  Specifically, the drive shaft 32 of the drive source 31 extends in parallel with the axis O1 (O2, O3), and one end thereof is connected to the end of the rotating shaft 11A of the main brush 12 via the shaft coupling 34. Yes. Thereby, the rotational motion of the drive shaft 32 is immediately transmitted to the main brush 12.

  Further, a disc-shaped gear 35 (spur gear) extending in the radial direction of the axis O is provided on the rotation shaft 11A of the main brush 12 and the rotation shafts 11B and 11C of the two sub brushes 13, respectively. The gear 35 provided on the rotation shaft 11A of the main brush 12 is a main gear 36, and the gear 35 provided on the rotation shafts 11B and 11C of the sub brush 13 is a sub gear 37. In particular, the gear 35 provided on the first sub brush 13A is a first sub gear 37A, and the gear 35 provided on the second sub brush 13B is a second sub gear 37B.

  In the present embodiment, the main gear 36, the first auxiliary gear 37A, and the second auxiliary gear 37B have the same outer diameter and pitch number, respectively. Further, the main gear 36 is disposed so as to mesh with the first sub gear 37A and the second sub gear 37B. However, the first sub gear 37A and the second sub gear 37B are not meshed with each other, and a gap is formed between them.

  With the above configuration, the rotational movement of the main gear 36 is transmitted to the first sub gear 37A and the second sub gear 37B, respectively. More specifically, the first auxiliary gear 37 </ b> A and the second auxiliary gear 37 </ b> B rotate in the direction opposite to the rotation direction of the main gear 36. That is, the outer peripheral surface 12S of the main brush 12 and the outer peripheral surfaces 13S of the two sub brushes 13 rotate in the same direction as viewed from the passage 20 between them. In addition, since the main gear 36 and the two sub gears 37 (the first sub gear 37A and the second sub gear 37B) have the same diameter and the same number of pitches as described above, the main gear 36 and the sub gear 37 are the same. The number of rotations of the gear 37 is the same. Thus, the rotational motion of the main brush 12 is transmitted to each sub brush 13 via the main gear 36 and the sub gear 37 (first sub gear 37A, second sub gear 37B).

  The liquid agent supply unit 3 is an apparatus for supplying the liquid agent L to the main brush 12. Specifically, as shown in FIG. 2, the liquid agent supply unit 3 includes a rod nozzle 41 that supplies the liquid agent L to the main brush 12, a liquid agent tank 42 that stores the liquid agent L, and the rod nozzle 41 from the liquid agent tank 42. And a conduit 43 for guiding the liquid L to the liquid crystal.

  The rod nozzle 41 is a member that is supported by the casing portion 4 and that discharges the liquid L toward the outer peripheral surface 12S of the main brush 12. More specifically, the rod nozzle 41 is disposed in a region outside the main brush 12 in the radial direction and does not interfere with the passage path 20. In the present embodiment, the rod nozzle 41 has a rod shape having substantially the same dimension as the dimension of the main brush 12 in the direction of the axis O1. The inside of the rod nozzle 41 is formed to be hollow, thereby forming a part of a flow path for the liquid agent L to flow. Furthermore, a plurality of supply holes 44 are formed on the outer peripheral surface of the rod nozzle 41 to communicate the outside with the above-described flow path. These supply holes 44 are formed in a region facing the outer peripheral surface 12 </ b> S of the main brush 12 on the outer peripheral surface of the rod nozzle 41. As will be described in detail later, the liquid agent L is discharged to the outside of the rod nozzle 41 through the plurality of supply holes 44 and supplied to the outer peripheral surface 12S of the main brush 12.

  Further, in the present embodiment, in the middle of the pipe line 43, a pump 45 for pumping the liquid agent L stored in the liquid agent tank 42 toward the rod nozzle 41 and an open / close state for switching the open / close state of the pipe line 43. And a valve 46.

  An example of the operation and usage method of the coating apparatus 1 configured as described above will be described with reference to FIG. First, prior to putting the object A into the coating apparatus 1, the main brush 12 and the two sub brushes 13 are driven to rotate by driving a drive source 31 (such as an electric motor) of the rotation drive unit 2. At this time, since the main gear 36 and each sub gear 37 (first sub gear 37A, second sub gear 37B) in the rotation drive unit 2 mesh with each other, the rotation direction of each sub brush 13 is the rotation direction of the main brush 12. It is opposite to the direction of rotation. Thereby, the coating device 1 will be in an operation state.

  Furthermore, the liquid agent L is supplied from the liquid agent supply unit 3 to the main brush 12 in the above state. Specifically, the on-off valve 46 in the liquid agent supply unit 3 is opened and the pump 45 is operated, so that the liquid agent L spreads from the liquid agent tank 42 toward the rod nozzle 41. The liquid L reaching the rod nozzle 41 is discharged from the supply hole 44 provided in the outer peripheral surface of the rod nozzle 41 toward the outer peripheral surface 12S of the main brush 12 by the pressure of the pump 45.

  Here, in the present embodiment, the liquid L is mainly assumed to be a gel-like liquid having a relatively high viscosity, such as the above-described grease or anti-seizure agent. Therefore, most of the liquid L discharged from the supply hole 44 is held on the outer peripheral surface 12S of the main brush 12 without infiltrating from the outer peripheral surface 12S of the main brush 12 toward the rotating shaft 11. The In addition, since the main brush 12 is driven to rotate, the liquid L continuously supplied from the rod nozzle 41 is supplied to the outer peripheral surface 12S of the main brush 12 uniformly evenly over the entire circumferential direction. Is done.

  Furthermore, a centrifugal force directed radially outward is applied to the liquid L supplied to the outer peripheral surface 12 </ b> S of the main brush 12 (hair-like portion 5) as the main brush 12 rotates. Therefore, the liquid agent L also spreads on the outer peripheral surface 13S of the two sub brushes (hair-like portions 5) provided close to the main brush 12 in the radial direction.

  In the state where the liquid L is sufficiently distributed to the main brush 12 and the two sub brushes 13 as described above, the object A such as a bolt is inserted into the passage 20 from the input port 23. Specifically, the object A is thrown into the insertion port 23 in a state where the direction in which the object A extends matches the direction in which each brush 10 extends.

  At this time, when viewed from the upstream side of the insertion port 23, the main brush 12 and the first sub brush 13 </ b> A rotate in a direction from the insertion port 23 toward the downstream side of the passage route 20 (first passage 21). . Thereby, the frictional force in the downstream direction is applied to the outer peripheral surface of the object A by the main brush 12 and the first sub brush 13A. The object A is taken into the first passage 21 by this frictional force.

  The object A taken into the first passage 21 moves downstream in the first passage 21 by the main brush 12 and the first sub brush 13A. In particular, since the dimensions of the main brush 12 and the auxiliary brush 13 in the direction of the axis O are sufficiently larger than the dimension of the object A in the longitudinal direction, the object passing through the passage path 20 (first passage 21). For A, a frictional force having a substantially uniform size is applied along the longitudinal direction. Therefore, the object A moves toward the downstream while maintaining a state of being substantially parallel to the axis O.

  In addition, since the rotation speeds of the main brush 12 and the first sub brush 13A are substantially the same, the object A moving in the passage path 20 rotates around its own central axis OM when viewed from the axis O direction. Without passing through the passage 20 from the upstream side toward the downstream side.

  While passing through the first passage 21, the liquid agent L is applied to the surface of the outer peripheral surface of the object A that contacts the main brush 12 and the first sub brush 13A. More specifically, the liquid agent L is applied to a pair of surfaces opposed to each other in the diameter direction across the central axis OM of the outer peripheral surface of the object A. In this way, the pair of surfaces on which the liquid agent L is applied in the first passage 21 is referred to as a first application surface A1. In other words, the liquid L is not applied to the outer peripheral surface of the object A except for the first application surface A1 at this stage.

  Next, the object A that has passed through the first passage 21 moves from the second passage inlet 25 into the subsequent second passage 22 through the first passage outlet 24 described above. More specifically, first, the object A that has moved downstream from the first passage 21 contacts the outer peripheral surface 13S of the second sub brush 13B. Here, the outer peripheral surface 13 </ b> S of the second sub brush 13 </ b> B moves in the same direction as the outer peripheral surface 12 </ b> S of the main brush 12 when viewed from inside the second passage 22. Accordingly, the object A passes through the second passage 22 with the rotation of the main brush 12 and the second sub brush 13B.

  Further, the first passage 21 is connected to the second passage 22 at an angle of about 120 °. Therefore, the second application surface A2 (that is, a pair of surfaces opposed in the radial direction across the central axis OM of the object A), which is a region different from the first application surface A1, is the outer peripheral surface of the main brush 12. 12S and the outer peripheral surface 13S of the second sub brush 13B are in contact with each other.

  At this time, similarly to the first sub brush 13A, the second sub brush 13B is rotationally driven at substantially the same rotational speed as the main brush 12, so that the object A has its center axis OM. It passes through the second passage 22 without rotating around. That is, in the second passage 22, only the second application surface A2 contacts the main brush 12 and the second sub brush 13B. By passing through the second passage 22 in this way, the liquid L held on the outer peripheral surface 12S of the main brush 12 and the outer peripheral surface 13S of the second sub brush 13B is applied to the second application surface A2 of the object A. . As described above, the liquid agent L is applied to the outer peripheral surface of the object A from four different directions without gaps.

  As described above, in the coating apparatus 1 according to this embodiment, the main brush 12 is rotationally driven by the single rotational drive unit 2. In this state, the liquid agent L can be uniformly applied to the outer peripheral surface of the object A by passing the object A along the passage route 20. In addition, the object A automatically moves in the passage route 20 as the brush 10 rotates. Thereby, compared with the case where the liquid L is applied manually, the application work can be advanced efficiently.

  Furthermore, according to the above-described configuration, the object A passes through the passage 20 (the first passage 21) between the main brush 12 and the first sub brush 13A facing the main brush 12, so that the object A The liquid L is applied to two surfaces (first application surface A1) facing each other on the outer peripheral surface. Subsequently, when the object A passes through the passage 20 (second passage 22) between the main brush 12 and the second sub brush 13B, the liquid agent is applied to two surfaces other than the first application surface A1. L is applied. That is, by applying the liquid agent L from each of the four directions, the liquid agent L can be applied uniformly over the entire outer peripheral surface of the object A.

  In addition, according to the above-described configuration, the main brush 12 and the sub brush 13 (the first sub brush 13A and the second sub brush 13B) rotate to pass the object A passing through the passage 20 with respect to the object A. A force is continuously applied toward one side in the extending direction of the path 20. Thereby, the object A can be automatically moved along the passage route 20. In other words, the liquid agent L can be applied to the object A without the operator moving the object A by hand. Therefore, the application work can be performed efficiently, and variations in quality among workers can be suppressed.

  The first embodiment of the present invention has been described above with reference to the drawings. However, various modifications can be made without departing from the gist of the present invention. For example, in the first embodiment described above, the first sub brush 13 </ b> A and the second sub brush 13 </ b> B are rotationally driven via a single drive source 31 and a gear 35 connected to the main brush 12. explained. However, the configuration for rotationally driving each brush 10 is not limited to the above.

  For example, the main brush 12, the first sub brush 13A, and the second sub brush 13B may be rotationally driven by separate drive sources 31, respectively. Specifically, it is conceivable to further provide three electric motors corresponding to each brush 10 and a control unit (not shown) that controls these electric motors. In this case, the rotation speed and rotation direction of the three electric motors can be controlled via the control unit.

  Furthermore, instead of the hair-like part 5 as the liquid agent holding part 5 in the first embodiment, for example, a material such as a block-like sponge or cloth may be used. In short, any material may be used as the liquid agent holding part 5 as long as it is a material that can hold a liquid medicine and has an elastic restoring force that can be easily deformed when it contacts the object A. .

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, about the structure similar to said 1st embodiment, after attaching the same code | symbol, detailed description is abbreviate | omitted.
As shown in FIG. 5, in the second embodiment, a plurality of supply nozzles 50 are formed inside the bristle portion 5 of the main brush 12 (that is, the outer peripheral surface of the rotation shaft 11 </ b> A of the main brush 12). That is, the liquid supply unit 3 according to the present embodiment includes a nozzle body 51 as the rotation shaft 11 </ b> A of the main brush 12, a supply nozzle 50 formed on the outer peripheral surface of the nozzle body 51, and a liquid agent tank 42 that stores the liquid L. And a conduit 43 that connects the liquid agent tank 42 and the nozzle body 51.

  The supply nozzles 50 are arranged at substantially equal intervals in the circumferential direction of the nozzle body 51 (rotating shaft 11A) when viewed from the direction of the axis O. Further, although not shown in detail, the supply nozzles 50 are also arranged in the direction of the axis O of the nozzle body 51. In particular, it is desirable that these supply nozzles 50 are arranged so as not to interfere with the position where the hair-like part 5 of the main brush 12 is implanted.

  Furthermore, the inside of the nozzle body 51 (rotating shaft 11A) is hollow, thereby forming a part of a flow path for the liquid agent L to circulate. The liquid agent L is supplied to the internal space through the pipe line 43. In the example of FIG. 5, a total of eight rows of supply nozzles 50 are formed at intervals of approximately 45 ° along the circumferential direction of the axis O. The specific number and arrangement of the supply nozzles 50 are not limited to this, and can be appropriately changed according to the characteristic value (such as viscosity coefficient) of the liquid L.

  In the configuration as described above, the liquid agent L in the liquid agent tank 42 is pumped by the pump 45 of the liquid agent supply unit 3 and then discharged to the outer peripheral surface of the rotating shaft 11A (nozzle body 51) through the plurality of supply nozzles 50. . The liquid agent L that has reached the outer peripheral surface of the rotating shaft 11A penetrates the hair-like portion 5 provided on the outer peripheral surface. Thereby, the liquid agent L can be spread to the outer peripheral surface 12S of the main brush 12 similarly to the above-mentioned 1st embodiment.

  In particular, the supply nozzles 50 are arranged at equal intervals over the entire circumferential direction on the outer peripheral surface of the rotating shaft 11A. Thereby, the liquid agent L can be sufficiently included throughout the main brush 12. In addition, according to the above configuration, the liquid agent L is supplied from the radially inner side (rotating shaft 11A) of the main brush 12, and then gradually penetrates the entire hair-like portion 5 by moving toward the radially outer side. The possibility that the excessive liquid agent L is held only on the outer peripheral surface 12S of the main brush 12 (the bristles of the hair-like portion 5) can be reduced. Thereby, since scattering of the liquid agent L accompanying rotation of the main brush 12 is suppressed, the usage amount of the liquid agent L can be reduced, and contamination of the work environment can be avoided.

  In the above-described embodiment, an example is described in which the dimensions in the radial direction of the main brush 12, the first secondary brush 13A, and the second secondary brush 13B (that is, the radial dimension of the hair-like portion 5) are set to be substantially the same. did. However, the mode of each brush 10 is not limited to this, and for example, as shown in FIG. 6, the radial dimension of the bristle portion 5 in the main brush 12 is a bristle shape in the first sub brush 13A and the second sub brush 13B. It may be larger than the radial dimension of the portion 5.

  With such a configuration, a larger volume occupied by the hair-like portion 5 of the main brush 12 can be ensured, so that more liquid agent L can be included in the main brush 12. Thereby, the liquid agent L can be sufficiently applied to the object A without unevenness. Moreover, according to such a structure, the dimension of the passage route 20 can be changed according to the dimension of the target object A. Thereby, the kind and dimension of applicable target object A can be increased. That is, the versatility of the coating apparatus 1 can be improved.

  Furthermore, in said embodiment, the example which used the same material for each bristle part 5 of the main brush 12, 1st subbrush 13A, and 2nd subbrush 13B was demonstrated. However, the material of the bristle part 5 of each brush 10 does not necessarily need to be the same. For example, you may form only the hair-like part 5 of the main brush 12 with a fiber material harder than the hair-like part 5 of the subbrush 13.

  In this way, the main brush 12 of the main brush 12 that is used over time is configured by making the hair portion 5 of the main brush 12 harder than the hair portion 5 of the sub brush 13 (that is, having a higher elastic restoring force). Wear can be suppressed. In particular, since the driving force by the rotary drive unit 2 is directly transmitted to the main brush 12 without passing through the gear 35 or the like, a large torque is applied compared to the sub brush 13. Therefore, when each brush 10 is made of the same material, there is a concern that the main brush 12 may be worn out earlier than each sub brush 13. However, the lifetime of the main brush 12 can be extended by adopting the configuration as described above.

  In addition, in the present embodiment, the configuration in which the nozzle body 51 as the rotating shaft 11 </ b> A of the main brush 12 is used as the liquid agent supply unit 3 and the supply nozzle 50 is formed in the nozzle body 51 has been described. However, even if one of the rotation shafts 11B and 11C of the first sub brush 13A and the second sub brush 13B is used as the nozzle body 51, the supply nozzle 50 is formed on the rotation shafts 11B and 11C. Good. Furthermore, as shown in FIG. 7, the rotation shafts 11 </ b> A, 11 </ b> B, and 11 </ b> C of the main brush 12, the first sub brush 13 </ b> A, and the second sub brush 13 </ b> B may all be a nozzle body 51. In addition, when taking such a structure, it is desirable that the quantity of the liquid agent L supplied from the main brush 12, the 1st subbrush 13A, and the 2nd subbrush 13B is substantially equal mutually. In other words, it is desirable that the dimensions and the number of supply nozzles 50 formed on the rotary shafts 11A, 11B, and 11C (nozzle body 51) are equal to each other.

  According to such a configuration, the amount of the liquid agent L in each brush 10 can be made more uniform than when the liquid agent L is supplied only to the main brush 12. Therefore, the liquid agent L can be applied to the object A more uniformly.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. In addition, about the structure similar to said each embodiment, after attaching the same code | symbol, detailed description is abbreviate | omitted. As shown in FIG. 8, the coating apparatus 1 according to this embodiment includes a guide unit 60 that guides the object A along the passage route 20 by extending along the passage route 20.

  The guide part 60 is a member for guiding the object A to which the liquid agent L is applied along the passage route 20 more smoothly. The guide portion 60 is disposed on one side of the brush 10 in the axis O direction, that is, on the opposite side of the rotation drive unit 2 with the brush 10 interposed therebetween.

  In the present embodiment, the guide unit 60 includes a plurality (two) of rails 61. Both of these rails 61 are bent at an angle of 120 ° in the middle of the extension so as to correspond to the passage route 20 described above. Further, a gap substantially equal to the radial dimension of the object A is formed between the rails 61. Two surfaces facing each other across the gap are used as a guide surface 62 that guides the two surfaces by contacting the outer peripheral surface of the object A put in the passage path 20.

  In addition, as shown in FIG. 9, when each rail 61 is viewed from the direction in which the passage route 20 extends, a part of the guide surface 62 faces the other rail 61 facing the passage route 20. A protruding portion 63 is provided. Specifically, these convex portions 63 are provided on the edge of one side of the guide surface 62 in the direction of the axis O (that is, the side where the brush 10 is located). In the following description, the direction on the brush 10 side with the convex portion 63 interposed therebetween is referred to as the inner side, and the direction opposite to the inner side is referred to as the outer side.

  According to the above configuration, when the bolt 200 is used as the object A, a part (head 200H) of the bolt 200 can be engaged with the convex portion 63. Specifically, the bolt 200 is inserted into the insertion port 23 of the passage route 20 with the head portion 200H facing the rail 61 side. At this time, the head portion 200H is projected outside the convex portion 63, and the screw portion 200S is supported so as to be sandwiched from the radially outer side. By providing such a guide portion 60, the bolt 200 as the object A can be smoothly guided without deviating from the passage route 20.

  In the present embodiment, an example in which a pair of rails 61 is used as the guide unit 60 has been described. However, the aspect of the guide part 60 is not limited to this. For example, it is good also as the guide part 60 by providing the exterior member (not shown) which covers the coating device 1 from the outside, and providing the slit which penetrates the wall surface of this exterior member. With such a configuration, the object A can be smoothly guided by the slit (guide section 60), and the coating device 1 is covered from the outside by the exterior member, so that the movable parts such as the brush 10 and the rotation driving section 2 are covered. The coating apparatus 1 can be configured without exposing the film to the outside. Thereby, while being able to suppress scattering of the liquid agent L accompanying rotation of the brush 10, the safety | security of an apparatus can further be improved.

DESCRIPTION OF SYMBOLS 1 ... Application | coating apparatus 2 ... Rotation drive part 3 ... Liquid supply part 4 ... Casing part 5 ... Liquid agent holding | maintenance part (hair-like part) 10 ... Brush (application | coating part) 11 ... Rotating shaft 11A ... Rotating shaft 11B ... 1st ... Rotating shaft of sub brush 11C ... Rotating shaft of second sub brush 12 ... Main brush (main application portion) 12S ... Outer peripheral surface of main brush 13 ... Sub brush (sub application portion) 13A ... First sub brush 13B ... Second sub brush Brush 13S ... Outer peripheral surface of sub brush 20 ... Passage path 21 ... First passage 22 ... Second passage 23 ... Input port 24 ... First passage outlet 25 ... Second passage inlet 26 ... Outlet 30 ... Bearing device 31 ... Drive source 32 ... Drive shaft 33 ... Transmission section 34 ... Shaft coupling 35 ... Gear 36 ... Main gear 37 ... Sub gear 37A ... First sub gear 37B ... Second sub gear 41 ... Rod nozzle 42 ... Liquid agent tank 43 ... Pipe 44 ... Supply hole 45 ... Pump 46 ... Open / close valve 50 ... Supply nozzle 51 ... Nozzle body 60 ... Guide part 61 ... Rail 62 ... Guide surface 63 ... Convex part 200 ... Bolt 200H ... Bolt head A ... Subject A1 ... First application Surface A2 ... Second coating surface L ... Liquid O, O1, O2, O3 ... Axis OM ... Center axis of object

Claims (8)

A coating device that applies a liquid agent to the outer peripheral surface of a columnar object,
A rotation shaft extending along the axis, and a liquid agent holding portion that is provided around the rotation shaft and holds the liquid agent, and each of the plurality of axes is provided so as to be parallel to each other so as to face each other. An application part that forms a passage route between the outer peripheral surfaces of the liquid agent holding part;
A liquid supply unit for supplying the liquid to the application unit;
A rotational drive unit that rotationally drives at least one of the rotational axes about the axis;
A coating apparatus comprising: At least three of the plurality of application units are provided, and one of the application units is a main application unit having the rotation shaft that is rotationally driven by the rotation driving unit, and excludes the main application unit. Each of the two application parts is a sub-application part,
2. The coating apparatus according to claim 1, wherein the two sub-coating portions are respectively opposed to an outer peripheral surface of the liquid agent holding portion in the main coating portion to form the passage path.   The coating apparatus according to claim 2, wherein a rotation direction of the rotation shaft in the main application unit is opposite to a rotation direction of the rotation shaft in the two sub application units.   The said liquid agent holding | maintenance part in the said main application part is an application apparatus as described in any one of Claim 2 or 3 which has a different outer diameter from the said liquid agent holding | maintenance part in the said sub application part.   The liquid agent holding part is a hairy part provided on an outer peripheral surface of the rotating shaft, and the hairy part in the main application part is formed to be harder than the hairy part in the sub application part. Item 5. The coating apparatus according to any one of Items 2 to 4. The liquid supply part is
The coating apparatus according to any one of claims 1 to 5, further comprising a rod nozzle that extends in parallel with the rotation axis and has a supply hole that discharges the liquid agent toward an outer peripheral surface of the coating section. The liquid supply part is
The coating apparatus according to claim 1, further comprising a supply nozzle that is formed inside at least one of the liquid agent holding portions and supplies the liquid agent to the liquid agent holding portion.   The application according to claim 1, further comprising a guide portion that extends along the passage path and guides the object along the passage path by supporting a part of the object. apparatus.

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