JPH07116568A - Coating method and coating device for inside surface of cylindrical member - Google Patents

Abstract

PURPOSE:To utilize cylindrical members on both sides as shielding members and to prevent useless spraying, etc., by coating the cylindrical members by the length corresponding to a prescribed number of pieces in the axial intermediate part of the cylindrical materials which are to be coated and are disposed with the plural cylindrical members. CONSTITUTION:The cylindrical materials 3 which are to be coated and are disposed with the cylindrical members 1 in series by a number of pieces times the prescribed number of pieces are placed on revolving rollers 10 and are rotated while the materials are inclined to one side in an axial direction by the revolving rollers 10. The intermediate parts of the cylindrical materials 3 to be coated are coated by the length corresponding to the prescribed number of pieces in a coating stage. The prescribed number of pieces of the cylindrical fittings 1 are ejected outside by carrying out chucks 18 from one side in an ejection stage. The remaining cylindrical fittings 1 on the other side are fed until the fittings come into contact with a stopper 23 for positioning in a feed stage. The prescribed number of pieces of the fresh cylindrical fittings 1 are supplied by carrying in chucks 19 in a carrying in stage. All the cylindrical fittings 1 are coated by repetition of these respective stages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner surface coating method and a coating device for a tubular member, which is for coating a liquid material such as an adhesive or a paint on the inner surface of a tubular member such as a tubular fitting.

[0002]

2. Description of the Related Art Generally, in the industrial world, a coating is applied to the inner surface of a tubular metal fitting to coat it, or an adhesive is applied to the inner surface of the tubular metal fitting, and then a vibration-proof rubber or the like is applied. It is widely used for sticking.

An example of a method and apparatus for applying paint or adhesive to the inner surface of such a cylindrical member is shown in FIG.
Those shown in are known. Therefore, as an inner surface coating method and apparatus for a tubular member according to the prior art, a case of applying an adhesive to a tubular metal member will be described as an example.

In the figure, a cylindrical object 10 to which an adhesive is applied
0 is a tubular fitting 200 made of, for example, steel in a tubular shape.
Are arranged in series in the axial direction.

The coating operation is carried out in a coating booth 300 formed as a substantially closed space, and a transport mechanism 400 is provided across the coating booth 300. Transport mechanism 4
Reference numeral 00 generally includes a transport chain 401 laid between the processes before and after the coating process, and a transport jig 402 movably provided on the transport chain 401 and having a triangular recess. Then, the tubular article 100 is placed in the triangular recess of the carrying jig 402.

The coating machine 500 is provided on one side of the coating booth 300 along the axis of the tubular article 100. The applicator 500 includes an applicator main body 501 to which an adhesive is supplied from an external adhesive tank (not shown), and an applicator main body 50.
No. 502 extending from 1 toward the tubular article 100
And a moving mechanism (not shown) such as a cylinder.

The coating apparatus according to the prior art has such a structure, and the cylindrical article 100 to be coated is conveyed by the transport mechanism 40.
0 is sent into the coating booth 300, and the coating machine 5
Stop at 00. Then, the applicator 500 advances in the F direction until the nozzle 502 projects from the other side of the tubular article 100 to eject the adhesive in a conical pattern from the tip of the nozzle 502 while the nozzle 502 is tubular. The vehicle moves backward in the R direction until it comes out of one side of the strip member 100.

As a result, the adhesive is applied to the inner surfaces of all the tubular fittings 200 constituting the tubular article 100 over the entire circumference, and when the application is completed, the transport mechanism 400 moves to the next step. Is sent.

[0009]

However, in the above-mentioned conventional coating method and coating apparatus, the coating machine 5 is used.
The nozzle 502 of 00 is moved over the entire length of the tubular article 100 to apply all the inner surfaces of the tubular metal fittings 200 of the tubular article 100 at one time. Not only is waste generated at the end of the blowing, but also the tubular metal fitting 200, the transport mechanism 400, and the like are soiled by the wastely blown adhesive.

That is, since the inner periphery of the tubular article 100 is applied at one time over the entire length by the adhesive ejected in a conical pattern from the nozzle 502, the tubular metal fittings 200 at both ends are applied. , While starting to blow the adhesive from the inner side of the tubular fitting 200 on the other side,
It is necessary to continue blowing until just before.

Therefore, the adhesive is wasted by the amount of the start and end of the blowing, and the cost of the coating operation increases. In addition, the waste sprayed adhesive adheres to the end faces of the front and rear cylindrical metal fittings 200, the transfer jig 402 of the transfer mechanism 400, and the like to stain them, and it is difficult to remove the rubber burr after joining. To become. Further, since the adhesive is scattered over a wide range, it is necessary to upsize the coating booth 300.

[0012]

Therefore, according to the present invention, the inner surface side of the tubular member is partially coated by a predetermined number of lengths in the axial intermediate portion of the tubular coating object, and the coating portion is applied. By replacing the tubular members only, the application is performed while using the tubular members on both sides of the tubular member to which the liquid substance is applied as the shielding member. That is, the inner surface coating method for a tubular member according to the present invention is an axially intermediate portion of a tubular article to be coated in which a plurality of tubular members are arranged in the axial direction. An applying step of applying a liquid material to the inner surface of the member, an unloading step of unloading the same number of tubular members as the predetermined number from one side of the tubular article after application, and the tubular member on one side is unloading. After that, the step of sending the other side of the tubular member to the one side by the predetermined number is carried out, and the same number of new tubular members as that of the predetermined number are carried into the other side of the sent tubular member and arranged in series. The liquid material is applied to the inner surface of the tubular member by repeating the coating step, the unloading step, the feeding step, and the loading step.

Further, according to a second aspect of the present invention, there is provided a coating stage on which a tubular object to be coated, which comprises a plurality of tubular members arranged in the axial direction, is placed, and an axis of the tubular object to be coated on the coating stage. A coating means for coating a liquid material on the inner surface of the tubular member for a predetermined number of lengths in the middle portion in the direction, and the same number of tubular members as the predetermined number are coated from one side of the tubular article after the coating is completed. Carrying-out means for carrying out from the stage to the outside, feeding means for sending the tubular member on the other side to the one side by the predetermined number after the tubular member on the one side is carried out, and the other side of the tubular member sent In addition, the inner surface coating device for the cylindrical member is constituted by a carry-in means for carrying in the same number of new cylindrical members as the predetermined number and arranging them in series.

Further, according to a third aspect of the present invention, the plurality of cylindrical members are axially arranged by a pair of rotating rollers arranged so as to be spaced apart from each other so that one side in the axial direction is wide and the other side in the axial direction is narrow. Direction, the coating stage that rotates while rotating the tubular article to be tilted to one side in the axial direction, and the liquid material is jetted from the nozzle inserted into the tubular article on the application stage,
A coating machine for coating the inner surface side of the tubular member by a predetermined number of lengths at the axially intermediate portion of the tubular coating material, and one side of the tubular coating material provided above the coating stage, which is provided above the coating stage. And a carry-out mechanism for gripping and carrying out a predetermined number of tubular members to the outside, and a tubular member on the other side provided on the other side of each of the rotating rollers and after the tubular member on one side is delivered. A feeding mechanism for feeding the predetermined number of sheets to one side, and a new tubular member of the same number as the given number is carried in series on the other side of the tubular member which is provided above the coating stage. The loading mechanism to be placed constitutes an inner surface coating device for the cylindrical member.

According to a fourth aspect of the present invention, in the inner surface coating device for a tubular member according to the third aspect, the tubular member and each rotary roller are made of a magnetic material, and the lower side between the rotary rollers is provided. Is characterized by having a magnet.

[0016]

The coating means coats the inner surface side of the tubular member by a predetermined number of lengths at the axially intermediate portion of the tubular article to be coated. Therefore, the remaining tubular member sandwiching the applied intermediate tubular member from both sides functions as a shielding member for preventing the liquid material from scattering to the outside. Then, the tubular member is carried out from one side of the tubular article to be coated, and the remaining tubular member on the other side is sent to one side, and is delivered to the other side of the tubular member. The same number of new tubular members as the above-mentioned tubular members are provided, and the axial intermediate portion is partially applied again by a predetermined number of lengths, so that the tubular members are applied by a continuous batch operation. be able to.

According to the configuration of claim 2, the same operation as that of the above-described claim 1 can be obtained.

Further, according to the third aspect of the invention, the operation of the first aspect can be realized with a relatively simple configuration.
In addition, a pair of rotating rollers arranged so as to be spaced apart from each other such that the interval on one side in the axial direction is wide and the interval on the other side in the axial direction is narrow, and the cylindrical object is rotated while being inclined to the one side in the axial direction. For this reason, the tubular members are brought closer to one side and are in close contact with each other. Thereby, it is possible to prevent the liquid material applied inside from leaking to the outside from the gap between the tubular members,
It is possible to prevent the liquid substance attached to the inner surface side of the tubular member from accumulating.

According to the present invention, the rotating roller is magnetized by the magnet provided on the lower side of each rotating roller, and the cylindrical member can be brought into close contact with each rotating roller by the magnetic force of the magnet. As a result, the tubular member can be efficiently rotated while preventing the tubular member from flying due to the rotation.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 5, taking as an example the case where an adhesive is applied to the inner surface of a tubular metal member.

First, FIG. 1 is a front view showing the overall structure of an inner surface coating apparatus for a cylindrical member according to the present invention, in which a predetermined number of cylindrical metal fittings 1 made of a magnetic metal material (6 in this embodiment) are used.
Each of the tubular metal fitting blocks 2 is arranged in the axial direction and has a total length of L, and two tubular metal fitting blocks 2 are arranged in series to form a tubular cover having a total length of 2L. Paint 3
Are formed.

The coating stage 4 as a whole is housed in a coating booth (not shown) together with a coating machine 15 described later and the like. The coating stage 4 is a pedestal 5 fixed to the floor.
A bearing mounting plate 6 erected on the upper part of the pedestal 5 so as to be spaced apart in the axial direction, and each bearing mounting plate 6 above the pedestal 5.
Intermediate mounting plate 7 provided between and each bearing mounting plate 6
It is composed of a rotary roller 10 which will be described later and which is disposed between them.

Further, as shown in the top view of FIG. 2, a small bearing 8 having a small diameter is rotatably mounted on one of the bearing mounting plates 6 on one side of the applicator 15 and is rotatably mounted on the other side. A small bearing 8 and large bearings 9 on both sides of the small bearing 8 having a slightly larger diameter are rotatably attached to the mounting plate 6.

Each rotating roller 10 is formed of a magnetic material such as stainless steel into a long rod shape. Each of the rotary rollers 10 has one end in the axial direction supported by the small bearing 8 and the other end in the axial direction supported by the small bearing 8 and the large bearing 9. Therefore, the rotating rollers 10 are arranged so as to be spaced apart from each other so that the space on one side is wide and the space on the other side is narrow, and form a substantially V-shape along the horizontal plane. Each rotary roller 10 has a pulley 11 and a drive belt 1 at the other end.
2. Connected to the motor 14 via the pulley 13 and rotated by the rotational force of the motor 14 in the same direction at the same speed.

The coating machine 15 is provided on the same axis as the cylindrical object 3 to be coated, and is movably attached to one end of the pedestal 5 via a mounting bracket 16. The applicator 15 includes an applicator main body 15A connected to an adhesive tank via a pipe (none of which is shown), and a nozzle 15 extending from the applicator main body 15A toward the tubular article 3.
B, and a cylinder 17 for the applicator described later and the like. Also, unlike the prior art, the coating machine 15 is designed to eject the adhesive from the tip side of the nozzle 15B in a circular pattern perpendicular to the axis of the nozzle 15B.

The mounting bracket 16 to which the applicator 15 is attached is vertically movable, and its lower side is connected to the applicator cylinder 17. The coating machine cylinder 17 moves the coating machine 15 in the F direction and the R direction,
As a result, the nozzle 15B is adapted to coat the inner surface side of the tubular metal fitting 1 by a length (L) corresponding to a predetermined number of six metal fittings at the axially intermediate portion of the tubular article 3 to be coated. In this embodiment, the tubular metal fitting block 2 is composed of a predetermined number of six tubular metal fittings 1, two of these tubular metal fitting blocks 2 are arranged in series, and the tubular metal fittings 1 to 12 are tubularly covered. Since the coating material 3 is formed and the axial intermediate portion of the tubular coating material 3 is coated by the six cylindrical metal fittings, as a result, the predetermined number of six is the tubular coating material. It is equal to half of the total length (2L) of the object 3, that is, the total length L of the tubular fitting block 2.

Above the coating stage 4, a carry-out chuck 18 as a carry-out means is provided on one side (F direction side) of the tubular article 3 and a carry-in chuck 19 as a carry-in means. It is provided on the other side (R direction side) of the tubular article 3 to be coated. Each of these chucks 18 and 19 is composed of, for example, an electromagnet or the like, and by this magnetic force, the tubular metal fittings 1 are held in units of six, that is, each tubular metal fitting block 2.

On the other side of each rotary roller 10, a feeding jig 20 as a feeding means is movably provided. The feeding jig 20 is formed in a substantially U-shape straddling each rotating roller 10, and is connected to the feeding cylinder 21 on the lower side thereof. Further, the lower end side of the feeding jig 20 is movably supported by a guide rail 22 laid on the upper surface of the gantry 5.

The positioning stopper 23 is used as the feeding jig 2.
It is movably provided on one side of each rotary roller 10 so as to face 0. The positioning stopper 23 is formed in a substantially U-shape straddling each rotating roller 10, and is connected to the stopper cylinder 24 on the lower side thereof. Further, the lower end side of the positioning stopper 23 is movably supported by a guide rail 25 laid on the upper surface of the intermediate mounting plate 7.

A plurality of permanent magnets 26 are provided on the intermediate mounting plate 7. This permanent magnet 26 is
On the lower side of the central portion between 0, the magnetic poles are arranged in series so as to be along the axial direction of the rotating roller 10.

Reference numeral 27 shown in the top view of FIG. 2 is a carry-in conveyor for supplying a new tubular metal fitting 1 to the coating stage 4 in block units (predetermined number of units), and 28 is the tubular metal fitting 1 after coating is completed. It is an unloading conveyor that sends to the next process etc. in block units.

Next, the operation of the structure of this embodiment will be described in detail with reference to FIGS. The coating apparatus according to the present embodiment has a coating process, a carry-out process, and
The inner surface of the tubular metal fitting 1 is applied by realizing four steps of a feeding step and a carrying-in step and repeating these steps.

First, the coating process and the carrying-out process will be described with reference to FIG. In this coating process, the new tubular metal fitting block 2 supplied in the carrying-in process described later is used.
And the tubular metal fitting blocks 2 left in the previous coating step are arranged in series to form the tubular article 3 to be coated. Further, as shown by the dotted pattern in the figure, the tubular metal fitting block 2 left last time has three tubular metallic fittings 1 on one side thereof already painted by the previous painting process.

Since each of the rotating rollers 10 has a substantially one-sided space with a wide space on one side and a narrow space on the other side, the cylindrical article 3 placed on each rotary roller 10 is The one side is displaced downward while being positioned by the positioning stopper 23, while the other side is displaced upward and is inclined to one side in the axial direction as a whole. Due to this inclination, the tubular fitting 1
Are pushed toward the positioning stopper 23 by a weak force and are in close contact with each other.

When the tubular article 3 is set on the rotary roller 10, the applicator 15 is moved in the R direction by the applicator cylinder 17, and its nozzle 15B is moved to the intermediate portion of the tubular article 3. Insert deeper than. Specifically, approximately half (L / 2) of the total length L of the tubular metal fitting block 2, that is,
A predetermined number of three half metal fittings are inserted on the other side of the mating surface of each tubular metal fitting block 2 which is an intermediate portion of the tubular article 3 to be coated.

Then, the applicator 15 gradually moves in the F direction by the dimension L and ejects the adhesive in a circular pattern. As a result, as shown by the hatched pattern in FIG.
Only the inner surfaces of the six tubular metal fittings 1 are partially coated at the axially intermediate portion of the tubular article 3. As a result, in the tubular fitting block 2 on one side, the three tubular fittings 1 in the front half are applied by the previous application step, and the three tubular fittings 1 in the latter half are applied by the present application step. Then, the application of the entire block is completed.

When this coating process is completed, the positioning stopper 23 is retracted in the F direction, the carry-out chuck 18 is lowered, and the tubular metal fitting block 2 on one side is gripped. Transfer to the carry-out conveyor 28,
The carry-out process is completed.

Next, the feeding process will be described with reference to FIG.

The tubular metal fitting block 2 on one side after the application is completed.
Is carried out by the carry-out chuck 18, the feed jig 20 is moved in the F direction by the feed cylinder 21.
The tubular metal fitting block 2 to which the three tubular metal fittings 1 on the other side are not yet applied is moved forward until it comes into contact with the positioning stopper 23. Then, after advancing the tubular fitting block 2 having this uncoated portion, it is retracted in the R direction to secure a space for receiving a new tubular fitting block 2.

Finally, the carrying-in step will be described with reference to FIG.

When the new tubular metal fitting block 2 is conveyed by the carry-in conveyor 27, the carry-in chuck 19 is carried out.
Descends and grips this new tubular fitting block 2,
The other half is placed after the cylindrical metal fitting block 2 not coated. Then, the new tubular fitting block 2 is brought closer to the tubular fitting block 2 on the other side of which is uncoated by the feeding jig 20 and the positioning stopper 23 so as to be in close contact therewith.
As a result, the two tubular metal fitting blocks 2 are arranged in series to form the tubular article 3 to be coated, and the above-described coating process is performed again.

Incidentally, the tubular metal fitting block 2 carried out in the first carrying-out step immediately after the start of the work has one side half uncoated. Therefore, this first tubular metal block 2
Is stocked, and the stocked cylindrical metal fitting block 2 is supplied in the final carrying-in step. As a result, in the last application step, one half of the stocked tubular metal block 2 is also applied, and the application is completed.

As described above, according to the present embodiment, by arranging the two tubular metal fitting blocks 2 each consisting of the six tubular metal fittings 1 in series, the tubular member consisting of the twelve tubular metal fittings 1 is formed. The coated object 3 is formed, and the inner surface side of the tubular metal fitting 1 is coated by the coating machine 15 at the axially intermediate portion of the tubular coated object 3 by 6 pieces.
After the coating is completed, the six tubular metal fittings 1 are carried out from one side in block units, and the tubular metal fittings 1 on the other side are fed to the one side by six metal fittings, and six new tubular metal fittings 1 are supplied. With this configuration, the tubular metal fittings 1 can be applied for a predetermined number of lengths at the axially intermediate portion of the tubular article 3 to be coated, and the tubular metal fittings 1 on both sides to be applied are shield members. It is possible to prevent unnecessary blowing of the adhesive.

As a result, the cost of the painting work can be greatly reduced, the tubular metal fitting 1 and the like can be prevented from being contaminated, and the painting booth can be downsized.

Further, in this embodiment, the rotating roller 10 is arranged so that the distance on one side is wide and the distance on the other side is narrow, and the cylindrical object 3 is moved to one side in the axial direction by the rotating roller 10. Since it is configured to rotate while tilted, each tubular metal fitting 1
Can be brought close to one side for close contact. This allows
It is possible to reduce the gap between the tubular fittings 1 and prevent the adhesive sprayed in the tubular article 3 from scattering outside. Moreover, since the tubular article 3 rotates, the adhesive attached to the inner surface of the tubular metal fitting 1 can be prevented from accumulating on the lower side, and the adhesive can be evenly applied.

Further, in the present embodiment, as a result of being able to incline the tubular article 3 to be in close contact with the respective tubular metal fittings 1,
Only one end of the tubular article 3 is positioned by the stopper 23 for positioning.
It suffices to regulate from the axial direction. Therefore, even with tubular fittings having different lengths and diameters, application can be performed with a slight setup change operation, and the work efficiency of the application operation can be greatly improved.

Further, in this embodiment, the magnetic poles are arranged parallel to the axial direction on the lower side of the central portion between the rotary rollers 10.
Since the permanent magnets 26 are arranged, the magnetic force magnetizes the rotary rollers 10 to bring the tubular fittings 1 into close contact with the rotary rollers 10. As a result, the cylindrical object 3 can be efficiently rotated by the rotating roller 10, and the cylindrical metal fittings 1 can be effectively prevented from popping out by the rotation.

In the above embodiments, the large and small bearings 8 and 9 are used to form the gap between the rotary rollers 10 so that one side is wide and the other side is narrow.
Not limited to this, the diameter of the bearings on both sides are made the same,
The configuration may be realized by changing the mounting position of the bearing.

Further, in the above embodiment, the carrying-out chuck 1
Although the case where 8 and the carrying-in chuck 19 are mainly composed of electromagnets and the like is illustrated, the present invention is not limited to this, and a vacuum pump, for example, may be used for gripping with negative pressure.

On the other hand, in the above-mentioned embodiment, the case where the application start position and the application end position are made to coincide with the mating surfaces between the tubular metal fittings has been described. However, as in the range H in FIG. If the length is, start coating at any position in the tubular fitting,
You may finish.

Furthermore, in the above-mentioned embodiment, the case where the adhesive as a liquid material is applied to the inner surface of the cylindrical metal fitting 1 has been described as an example, but it can be widely applied to other liquid materials such as paint.

Further, in the above-mentioned embodiment, the case where the cylindrical metal fitting 1 is coated by the single coating stage 4 and the coating machine 15 is exemplified, but the present invention is not limited to this, and for example, the modification shown in FIG. As in the example, two coating stages 4A and 4B are provided side by side, the cylindrical metal fitting block 2 coated on one coating stage 4A is transferred to the other coating stage 4B, and is coated again on the other coating stage 4B. It may be configured.

This modified example will be outlined. One coating stage 4A and the other coating stage 4B are configured such that the cylindrical metal fittings 1 are fed in opposite directions. The positional relationships of the stoppers 23 are also opposite to each other. Further, the carry-out chuck 18 that carries out the tubular metal fitting block 2 from the one coating stage 4A also serves as the carry-in chuck of the other coating stage 4B.
Then, the tubular metal fitting block 2 applied by the other application stage 4B is phase-shifted to the application confirmation stage 30, and the application state of the adhesive is inspected by a photoelectric sensor or the like.

In the modified example configured as described above, the same effect as that of the above-described embodiment can be obtained. Furthermore, since two coating stages are installed side by side, one coating stage 4
Even if the cylindrical metal fitting block 2 whose half on one side is uncoated occurs in A, this block 2 is completely coated by the other coating stage 4B. Therefore, it is possible to save the labor of stocking and ensure the continuity and smoothness of the work.

Further, even if a trouble such as nozzle clogging occurs in one of the applicators 15, the adhesive is applied at least once by the other applicator 15, so that no adhesive is applied at all. It is possible to prevent the metal fitting block 2 from proceeding to the next step and further improve the reliability of the coating operation.

[0056]

As described in detail above, according to the inner surface coating method for a tubular member according to the present invention, the tubular member is coated by a predetermined number of lengths at the axially intermediate portion of the tubular article. The tubular members on both sides of the tubular member to be applied can be used as the shielding member. As a result, it is possible to prevent wasteful blowing of the liquid material and prevent the surroundings from being contaminated by the liquid material scattered to the outside.

According to the structure of claim 2, the effect of claim 1 described above can be obtained.

Furthermore, according to the third aspect, the effect of the first aspect can be obtained with a relatively simple configuration. On the other hand, since the cylindrical coated object can be rotated while being inclined by the rotating rollers having different intervals on both sides in the axial direction,
Each tubular member can be closely attached. As a result, it is possible to prevent a gap from being generated between the tubular members and prevent the liquid material sprayed in the tubular article from scattering to the outside.

According to the structure of claim 4, each rotating roller can be magnetized by the magnet, and each cylindrical member can be brought into close contact with the rotating roller. As a result, each tubular member can be prevented from popping out due to the rotation, and the tubular member can be efficiently rotated.

[Brief description of drawings]

FIG. 1 is a front view showing a cylindrical member coating apparatus according to an embodiment of the present invention.

FIG. 2 is a top view of a coating device.

FIG. 3 is a top view similar to FIG. 3, showing a coating process and a carrying-out process.

FIG. 4 is a top view showing a feeding step.

FIG. 5 is a top view showing a carrying-in step.

FIG. 6 is a top view showing a coating device for a tubular member according to a modified example of the embodiment.

FIG. 7 is a structural explanatory view showing a coating device according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cylindrical metal fitting (cylindrical member) 3 ... Cylindrical object to be coated 4 ... Coating stage 10 ... Rotating roller 15 ... Coating machine 18 ... Carry-out chuck 19 ... Carry-in chuck 20 ... Feed jig

Claims (4)

[Claims] 1. A coating method for applying a liquid material to an inner surface of a tubular member for a predetermined number of lengths at an axially intermediate portion of a tubular coating object in which a plurality of tubular members are arranged in the axial direction. And a carrying-out step of carrying out the same number of the tubular members as the predetermined number from one side of the tubular article to be coated after completion of the coating, and the tubular member on the other side after the tubular member on the one side is carried out. A coating step of feeding a predetermined number of one side to one side and a loading step of loading the same number of new tubular members to the other side of the fed tubular member and arranging them in series are provided. An inner surface coating method for a tubular member, wherein a liquid material is applied to the inner surface side of the tubular member by repeating a process, a carry-out process, a feeding process, and a carry-in process. 2. A coating stage on which a tubular article to be coated, which is formed by arranging a plurality of tubular members in the axial direction, is placed, and an axially intermediate portion of the tubular article to be coated on the coating stage, A coating means for coating the inner surface side of the tubular member with a liquid of a predetermined number of lengths;
After the coating is finished, a carrying-out means for carrying out the same number of tubular members as the predetermined number from one side of the tubular article to the outside, and a tubular member on the other side after the tubular member on one side is delivered A feeding means for feeding a predetermined number of said one side to one side, and a loading means for carrying in the same number of new tubular members as the predetermined number to the other side of the fed tubular member and arranging them in series. Inner surface coating device for tubular member. 3. A plurality of cylindrical members are arranged in the axial direction by a pair of rotating rollers arranged so as to be separated from each other so that one side in the axial direction is wide and the other side in the axial direction is narrow. A coating stage that rotates a tubular coating object that is tilted to one side in the axial direction, and a liquid substance is ejected from a nozzle inserted into the tubular coating object on the coating stage to eject the tubular coating object. A coating machine that coats the inner surface side of the tubular member by a predetermined number of lengths at the intermediate portion in the axial direction, and a coating machine that is provided above the coating stage and that is the same as the predetermined number from one side of the tubular article after the coating is completed. And a carrying-out mechanism for gripping the tubular member and carrying it out to the outside, and a predetermined number of the other-side tubular members provided on the other side of each of the rotating rollers and after the one-side tubular member is carried out. A feeding mechanism that feeds to one side, and a tubular member that is provided above the coating stage and is fed to the other side. An inner surface coating device for a cylindrical member, which comprises a carry-in mechanism for carrying in the same number of new cylindrical members as the predetermined number and placing them in series. 4. The tubular member and each rotary roller are made of a magnetic material, and the lower side between the rotary rollers is:
The inner surface coating device for a cylindrical member according to claim 3, wherein a magnet is provided.