JPH07155657A - Painting apparatus - Google Patents

Abstract

PURPOSE:To apply an object painting agent uniformly to a specified area to be painted by carrying the outer circumference of a work having a circular cross-section, setting a painting head in the way it can round the circumference of the work, driving the head to round the work, and positioning the work at a specified position in the longitudinal direction. CONSTITUTION:When a work is introduced into a casing 11, the tip part penetrates a cramp holder 14 and led to the insertion space S of a rotary body 12 and positioned by a slider 57. Consequently, the tip part of the work is positioned and brought into contact with a coating roller 23 in the longitudinal direction and a carrying system 60 in the cramp holder 14 holds the outer circumference, so that the work is held at a preset position. Further, when the work penetrates the cram holder 14, a motor 20 starts working and the rotary body 12 is rotated. As a result, the coating roller 23 held by the rotary body 12 rotates itself and rounds the circumference of the rotary body 12 and an object painting agent can be applied to a specified area of the circumference surface of the work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device, and more particularly to a coating device which is most suitable for coating a gel-like or liquid grease or other coating material on the peripheral surface of a rotating shaft or the like.

[0002]

2. Description of the Related Art When applying a material to be coated on the outer peripheral surface of a work having a circular cross section such as a rotating shaft or a pipe, it is necessary to simply apply the material to be coated by hand. I can't. Therefore, conventionally, a jig or device has been developed for uniformly applying the coating material onto the surface of the work.

For example, Japanese Examined Patent Publication (Kokoku) No. 4-54054 proposes an applicator capable of applying a coating material uniformly by hand. This applicator is integrally provided with a pair of claws and a container for containing the coating material, and the end face of a hollow work such as a pipe is sandwiched between the pair of claws facing each other to form the container. By squeezing by hand, while supplying the applied material to the claw portion facing the outer peripheral surface of the work, by rotating the work while guiding the work by the claw portion on the inner peripheral side,
A uniform application is aimed at.

Further, Japanese Utility Model Publication No. 63-2136 discloses an apparatus for applying a coating material to the outer periphery of a long work such as an electric wire. This apparatus is provided with a transporting unit that transports the work in the longitudinal direction, and an application head that is in sliding contact with the outer peripheral surface of the transported work. Then, by supplying the coating object to the coating head, the coating object is uniformly coated on the outer peripheral surface of the work.

[0005]

[Patent Document 1] Japanese Patent Publication No. 4-540
The applicator of No. 54 has a problem that the application work cannot be performed on a solid work because the end face of the work needs to be sandwiched between the pair of claw portions. In addition, since it is necessary to squeeze the container by hand to supply the coating material, it is difficult to supply the coating material to the nail portion in a fixed amount, and it is difficult to make the coating surface uniform.

On the other hand, in the apparatus of Japanese Utility Model Publication No. 63-2136, since it is necessary to convey a long work in the longitudinal direction, a long conveyance path must be provided in the longitudinal direction of the work, and a large equipment space is required. There was a problem.
In addition, since the work is moved in the longitudinal direction to apply the coating material, it is difficult to specify the application range within a predetermined range, and partial application of the support shaft or the like has not been possible.

The present invention has been made in view of the above problems, and it is possible to perform the coating step regardless of whether the cross-sectional shape of the work is solid or hollow, and moreover, within the specified coating range. It is possible to apply the applied material uniformly,
It is an object of the present invention to provide a coating device with good workability, economy and product quality.

[0008]

In order to solve the above-mentioned problems, a coating apparatus according to claim 1 of the present invention comprises a carrying means for carrying an outer peripheral portion of a work having a circular cross section, and a surrounding of the carried work. It is characterized in that it is provided with a coating head arranged so as to be rotatable, a drive means for driving the coating head to rotate, and a positioning means for positioning the work at a specific position in the longitudinal direction with respect to the coating head.

A coating apparatus according to a second aspect is the coating apparatus according to the first aspect, further comprising a rotation mechanism for rotating the coating head.
It is a circular body that can roll and contact the work. Furthermore, the coating apparatus according to a third aspect is the coating apparatus according to the first or second aspect, further comprising detection means for detecting that the work is carried by the carrying means and activating the drive means.

In addition, in the coating apparatus according to the fourth aspect, in the coating apparatus according to the first to third aspects, the positioning means is configured to change the relative position between the work and the coating head to a desired set value. ing.

[0011]

In the structure according to the first aspect of the present invention, when the work is carried by the carrying means, the work can be positioned at the specific position in the longitudinal direction with respect to the coating head by the positioning means. When the driving means drives the coating head in this state, the coating head orbits the work carried at a predetermined position and can uniformly apply the coating material to a specific position in the longitudinal direction of the work. .

According to the second aspect of the invention, when the coating head goes around the workpiece,
It is possible for the coating head to rotate while making rolling contact with the work. Further, in the structure according to the third aspect, when the work is carried by the detection means, the drive means is automatically driven, and the coating step can be performed.

In addition, in the configuration according to the fourth aspect, since the positioning means is configured to be able to change the set value, it is possible to give the device versatility.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic cross-sectional view of a coating apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic plan view showing a part of the coating apparatus cut away.
[FIG. 3] is a perspective view showing an appearance of the coating apparatus.

With reference to these figures, this coating apparatus
A rotating body 12 is provided inside the casing 11. The rotating body 12 has an insertion space S having a circular cross section for inserting the work 1 (see FIG. 3), and is supported rotatably around a center line C of the insertion space S. More specifically, the rotating body 12 is open at its ends by a support plate 13 disposed inside the casing 11 and a clamp holder 14. The support plate 13 is directly fixed to the inner wall of the casing 11, and
The clamp holder 14 is fixed via the end plate 15. The end plate 15 has the insertion space S.
And the opposite side of the rotating body 12 (see FIGS. 1 and 2).
The boss portion 16 is provided on the right side of the boss.

The work 1 is, for example, a rotating shaft of an image forming apparatus such as a copying machine, and its outer diameter is about 6 m.
It is from m to about 10 mm. Next, the rotating body 12 is provided with a shaft portion 17 penetrating the support plate 13. Shaft 17
Has a small diameter portion 18 on the tip side.
An input gear 19 is fitted and fixed to the. The input gear 19 meshes with an output gear 21 of a motor 20 as a driving means arranged in the casing 11. Therefore, the motor 20 is driven and the output gear 21 is changed to the input gear 1.
By rotating 9 to rotate, the rotating body 12 rotates around the center line C described above.

Further, the coating roller 2 is attached to the rotating body 12 via a support shaft 22 arranged in parallel with the center line C.
3 is carried. The outer peripheral surface of the application roller 23 is exposed in the insertion space S, and as described later, an application head for applying the application agent to the peripheral surface of the work 1 (see FIG. 3) inserted in the insertion space S is provided. It is what constitutes. A hard sponge or the like is most suitable as the material of the coating roller 23.
And, although not specifically shown, the casing 12
The coating material contained in the space is supplied to the coating roller 23 via a belt mechanism or the like. As the coating agent, liquid or gel grease or the like can be used. Support shaft 22 carrying the coating roller 23
Is a pair of bearing portions 2 protruding from both ends of the rotating body 12.
It is rotatably supported by 4 and 25.

Next, the rotation mechanism 30 for rotating the coating roller 23 will be described in detail. First, the support plate 13
A ring gear 31 facing the end plate 15 is fixed to. The ring gear 31 is arranged concentrically with the center line C of the rotating body 12, and a part thereof covers the end portion side of the rotating body 12. On the other hand, a satellite gear 32 that meshes with the ring gear 31 is fixed to the support shaft 22 that supports the coating roller 23. Therefore, when the motor 20 is driven and the rotating body 12 rotates, the bearing portion 2 of the rotating body 12
4 and 25 are also integrally driven to rotate about the center line C, as a result, the satellite gear 32 is driven by the ring gear 31,
The coating roller 23 fixed to the support shaft 22 can be rotated while rotating on its own axis.

Next, the insertion depth adjusting mechanism (positioning means) of the work 1 inserted into the rotating body 12 will be described in detail. First, the end portion of the casing 11 is partitioned by the outer peripheral flange 40 extending on the outer periphery of the end plate 15. An end face plate 41 is fitted into the outer peripheral flange 40, and the end face of the coating apparatus is attached to the end face plate 41.
Is configured. As shown in FIGS. 1 and 3, the end face plate 41 is provided with a window 41a for visually observing a scale 47 described later.

Next, the end face plate 41 has an annular dial 4
2 is rotatably mounted. Referring also to FIG.
More specifically, the dial 42 integrally includes a cylindrical shaft portion 42a that penetrates the end face plate 41 and is fitted to the outer periphery of the boss portion 16 of the end plate 15. Further, on the back surface (see FIG. 4C) of the dial 42, a large number of cam surfaces 43 formed side by side on the same circumference are formed.
A cam ball 44 is pressed against the cam surface 43 by a biasing member 45, and by the cam ball 44,
This is for restricting the relative displacement in the circumferential direction between the end face plate 41 and the dial 42, and for permitting the relative displacement in the circumferential direction when a predetermined torque is applied to the dial 42.

With reference to FIGS. 1, 2 and 5, an annular rotator 46 is arranged concentrically with the center line C on the back surface of the end plate 41, that is, the surface opposite to the dial 42. It is set up. On the outer periphery of the rotator 46, a needle portion 48 for indicating the scale 47 engraved on the end plate 15, a projection portion 49 protruding outward along one diameter direction, and formed on the end surface, An arc-shaped projection 50 for receiving torque from the dial 42 is integrally provided. Then, the drive protrusion 42b protruding from the end face of the cylindrical shaft portion 42a of the dial 42.
By engaging (see FIGS. 4B and 4C) in the clockwise direction in FIG. 5, the torque in the clockwise direction is transmitted from the dial 42 to the rotator 46.

The other end of a biasing member 51, which is embodied by a tension coil spring or the like having one end fixed to the end plate 15, is attached to the protrusion 49.
The urging force of 1 always urges in the counterclockwise direction in FIG. On the other hand, the end portion of the wire 52 is fixed to the base end portion of the needle portion 48. Wire 5
As shown in FIGS. 2 and 5, the reference numeral 2 passes through the end plate 15 via the guide portion 53 fixed to the end plate 15, and passes through the inside of the casing 11 to support the support plate 13. Penetrates through. The end of the wire 52 is fixed to the free end of the lever body 54.

As shown in FIG. 2, the lever body 54 has a plate shape whose one end is axially supported by a rotary support shaft 55 extending in the vertical direction of the coating apparatus (the front and back directions of the paper in FIG. 2). And is opposed to the center line C of the rotating body 12 via the support plate 13. The lever body 54 includes a drive shaft 5
One end of 6 is engaged. The drive shaft 56 is arranged concentrically with the center line C and penetrates the shaft portion 17 of the rotating body 12. The drive shaft 56 is configured to be displaceable in the direction of the center line C, and the other end of the drive shaft 56 is engaged with the slider 57.

As shown in FIGS. 1 and 2, the slider 57
Is a sheet metal member formed in a substantially U-shape,
It is configured to be displaceable in the direction of the center line C via a slide rail 58 fixed to 2. The contact surface 59 is exposed in the insertion space S of the rotating body 12 and contacts the end surface of the work 1 inserted in the insertion space S. Therefore, by rotating the dial 42 to determine the stop position of the slider 57 in advance, and then inserting the work 1 into the rotating body 12 and contacting the contact surface 59 of the slider 57. It becomes possible to position the work 1 and position the work 1 at a specific position in the longitudinal direction with respect to the coating roller 23.

Next, referring to FIG. 1 and FIG. 6, inside the clamp holder 14, a carrying mechanism 60 which constitutes a main part of the carrying means in this embodiment is housed. The carrying mechanism 60 includes a ring body 61 arranged concentrically with the center line C. Boss portions 62, which are formed at intervals of 120 °, are integrally formed on the outer peripheral portion of the ring body 61, and one of them protrudes upward in the vertical direction. The inside of each boss portion 62 communicates with the inner circumference of the ring body 61. A carrier 63 is arranged on each boss 62 so as to be displaceable in the radial direction. Each carrier 63 is fitted in the boss portion 62 and faces the center line C.
And a head portion 65 that can be locked to the end surface of the boss portion 62 are integrally provided. The head portion 65 of each boss portion 62 is biased toward the center by a spring member 66 such as a leaf spring. And
When the work 1 is inserted, each carrier 63 is pushed outward in the radial direction against the biasing force of the spring member 66, so that the reaction force of each spring member 66 mainly causes the outer peripheral surface of the work 1 to move. It can be carried and work 1
The tip of the can be supported on the peripheral surface of the coating roller 23.

Here, the spring member 66 of the carrier 63 along the vertical direction also serves as the switch element of the power supply circuit of the motor 20, and when the work 1 is inserted and the carrier 63 is displaced as described above, It is configured to be closed with the switch element 67 of the other party (see FIG. 6B). Therefore, in the configuration of the present embodiment, by adopting the configuration of FIG. 6, it is detected that the work 1 is carried and the motor 20
It constitutes a detection means for activating.

Next, the operation of this embodiment will be described in detail.
According to the above configuration, referring to FIG. 3, first, the dial 4
2 is rotated to preset the application range, that is, the application length of the applied material applied to the peripheral surface of the work 1. In this embodiment, the insertion depth of the work 1 is set by the above-described rotating element 46, wire 52, lever body 54, drive shaft 56, and slider 57.

Next, as shown in FIG. 3, the work 1 is grasped with one hand, and the work 1 is introduced from the center of the dial 42 into the casing 11. The end of the work 1 penetrates the clamp holder 14, It is introduced into the insertion space S of the rotating body 12 and is further positioned by the slider 57 (see FIGS. 1 and 2). As a result, the end portion of the work 1 is positioned with respect to the application roller 23 in the longitudinal direction of the work 1 and contacts the application roller 23. At the same time, the carrying mechanism 60 in the clamp holder 14 carries the outer peripheral surface of the work 1 as described above, so that the work 1 is carried in a fixed position.

Further, when the work 1 is inserted through the clamp holder 14, the motor 20 is operated by the detecting means described in FIG. 6, and the rotating body 12 is rotated. As a result, the coating roller 23 carried on the rotating body 12 orbits around the rotating body 12 while rotating on its own axis, and applies the coating object to the peripheral surface of the work 1 on the end portion side. As described above, in this embodiment, since the outer peripheral portion of the work 1 is carried, the work 1
There is an advantage that the work 1 can be carried and the coating material can be uniformly applied regardless of whether the work is solid or hollow.

Further, by circulating the coating roller 23, a uniform coating process can be performed, and in the coating process, the material to be coated is not carelessly adhered or touched by the operator's hand. There are also advantages. Furthermore, FIG.
The positioning means described with reference to FIGS. 2 and 5 can position the work 1 at the specific position in the longitudinal direction with respect to the coating roller 23, so that there is an advantage that the coating portion can be easily specified. .

In particular, in this embodiment, the ring gear 3
By adopting No. 1 or the satellite gear 32, the coating roller 23 can be revolved while revolving around its own axis, which has the advantage that the coating agent can be coated more uniformly. Further, in the present embodiment, by adopting the mechanism 60 of FIG. 6, when the work 1 is carried, the motor 20 is automatically driven and the coating process can be performed, so that the work 1 can be held with one hand. The application work can be easily and automatically performed only by gripping, and there is an advantage that workability is improved.

In addition, in this embodiment, the insertion depth of the work 1, that is, the set value of the application range can be changed by operating the dial 42, so that the apparatus has versatility. This has the advantage that it is easier to use. Therefore, according to the present embodiment, the coating step can be performed regardless of whether the cross-sectional shape of the work 1 is solid or hollow, and moreover, the coating material is uniformly coated in the specified coating range. Thus, it is possible to provide a coating apparatus which has good workability, economy, and product quality.

Needless to say, the above-mentioned embodiments are merely examples of preferred embodiments of the present invention, and the gist of the present invention is not limited to the above-mentioned embodiments.

[0034]

As described above, according to the first aspect of the present invention.
In the configuration described, since the outer peripheral portion of the work is carried, there is an advantage that the work can be carried and the coating agent can be uniformly applied regardless of whether the work is solid or hollow. Further, by rotating the coating head, it is possible to perform a uniform coating process, and there is also an advantage that in the coating process, the coating material does not carelessly adhere to or touch the operator's hand.

Further, since the work can be positioned at the specific position in the longitudinal direction with respect to the coating head by the positioning means, there is an advantage that the coated portion can be easily specified. Next, according to the second aspect of the present invention, the coating head can be revolved while rotating on its own axis, so that the coating agent can be coated more uniformly.

Further, in the structure according to the third aspect, when the work is carried, the driving means can be automatically driven to perform the coating step, so that the coating operation can be automatically performed. There is an advantage that workability is improved. In addition, in the configuration according to claim 4, since the positioning means is configured to be able to change the set value, the device can be provided with versatility, which is advantageous in that it is easy to use.

Therefore, according to the present invention, the coating step can be performed regardless of whether the cross-sectional shape of the work is solid or hollow, and the coating material is evenly distributed in the specified coating range. It is possible to provide a coating apparatus which can be coated and has good workability, economy, and product quality.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a coating apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing a cutaway part of the coating apparatus.

FIG. 3 is a perspective view showing an appearance of the coating apparatus.

4A and 4B are diagrams showing a dial that can be adopted in the coating apparatus, where FIG. 4A is a front view, FIG. 4B is a sectional view, and FIG.

FIG. 5 is a schematic cross-sectional view of the coating apparatus.

6A and 6B are views showing a carrying means and a detecting means that can be adopted in the coating apparatus, FIG. 6A is a schematic front view showing a state in which a work is not inserted, and FIG. 6B is a state in which a work is being inserted. It is a front schematic diagram shown.

[Explanation of symbols]

 19 Input Gear (Drive Means) 20 Motor (Drive Means) 21 Output Gear (Drive Means) 23 Application Roller (Application Head) 42 Dial (Positioning Means) 46 Rotator (Positioning Means) 52 Wire (Positioning Means) 54 Lever Body (Positioning means) 56 Drive shaft (positioning means) 57 Slider (positioning means) 60 Carrying mechanism (carrying means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuya Ohara 1-2-2 Tamatsukuri, Chuo-ku, Osaka City, Osaka Prefecture Mita Kogyo Co., Ltd. (72) Hiroyuki Shioji, 1-2-chome Takumazo, Chuo-ku, Osaka Prefecture No. 28 In Mita Industry Co., Ltd. (72) Inventor Naruto Tamano 1-2-2, Tamatsukuri Chuo-ku, Osaka City, Osaka Prefecture Mita Industry Co., Ltd.

Claims (4)

[Claims] 1. A carrying means for carrying an outer peripheral portion of a work having a circular cross section, a coating head arranged so as to be rotatable around the carried work, a driving means for driving the coating head to rotate, and the coating head. On the other hand, the coating device is provided with a positioning means for positioning the work at a specific position in the longitudinal direction. 2. The coating apparatus according to claim 1, further comprising a rotation mechanism for rotating the coating head, wherein the coating head is a circular body capable of rolling contact with a work. 3. The coating apparatus according to claim 1 or 2, further comprising detection means for detecting that the work is carried by the carrying means and activating the drive means. 4. The coating apparatus according to any one of claims 1 to 3, wherein the positioning means is capable of changing the relative position between the work and the coating head to a desired set value.