JPH0230058Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for applying paint such as glue, sealant, grease, paint, oil, etc. to the circumferential surface of a long material having a circular cross section, such as a large-diameter steel pipe.

BACKGROUND ART Conventionally, in order to protect a threaded portion formed at the end of a large-diameter steel pipe, there has been known a coating device for applying a sealant to the circumferential surface of a member having a circular cross section, which applies a sealant to the surface of the threaded portion. This coating device includes a turning roller on which a long material is placed and rotated, and a coating member that discharges a fixed amount of paint. This conventional coating device applies paint by accurately defining the position of the long material placed on the turning roller, adjusting the coating member individually according to the position of the long material, etc. It required a lot of man-hours.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for coating the circumferential surface of a circular cross-section material, which facilitates coating work and can reliably apply paint to a predetermined portion of a long material.

That is, the coating device of the present invention for coating the circumferential surface of a material with a circular cross section includes a coating member having a nozzle for discharging paint, and a coating member having a circular cross section and an axis substantially parallel to the longitudinal direction of the coating member to which the paint is to be applied. A set of two horizontal shaft turning rollers each have an axis parallel to the axis of the long material, and a coating member is placed in a horizontal state and rotated. It is composed of a first driving member that is driven along the axis of the elongated material in a direction toward and away from the end face, and a second driving member that lowers the application member in the vertical direction and brings it closer to the circumferential surface of the elongated material. The application member is provided with a stopper that comes into contact with the upper part of the outer circumferential surface of the elongated material when descending to define the relative position in the vertical direction between the circumferential surface of the elongated material and the nozzle of the elongated material, and The first driving member includes a sensor that detects the relative distance in the horizontal direction between the nozzle of the application member and one end surface in the axial direction of the elongated material, and the sensor controls the amount of movement of the first driving member in the horizontal direction. It is characterized by this. The coating device of the present invention includes a coating member, a turning roller, a first drive member that drives the coating member in a first direction, that is, a horizontal direction, and a first drive member that drives the coating member in a second direction, that is, the vertical direction. It is composed of two driving members.

The application member is a means for applying the paint fed under pressure from the paint supply device to the elongated material. As this application member, a nozzle for discharging the paint, a spatula-shaped application plate for applying the discharged paint to a constant thickness, a brush, or the like can be used as in the conventional case. This application member includes a first driving member, a second driving member, and a second driving member.
It may be held by a driving member.

The first driving member is a device that drives the application member in a direction approaching the end surface of the elongated material placed on the turning roller. This horizontal direction can be the central axis direction of the elongated material that is the material to be coated. As this first drive member, a hydraulic cylinder device with a guide rod or other known drive mechanism that reciprocates along a guide provided parallel to the horizontal direction can be used.

The second driving member is a device that drives the application member in the vertical direction. As with the first drive member, a hydraulic device having a cylinder and a piston, or any other known reciprocating drive device can be used for the second drive member. The first drive member causes the coating member of the coating device of the present invention to approach one end of the elongated material, and the second drive member drives the applicator there in a substantially perpendicular direction to guide the application member onto the circumferential surface of the elongated material. I'm nervous. The applicator, the first drive member, and the second drive member may be integrally constructed and assembled on a truck or the like so that they can move relative to the turning roller. Also,
In order to control the drive position of the first drive member, a sensor is provided to detect the relative distance between the end face of the elongated material and the nozzle of the application member in the horizontal direction. This sensor, for example, has an engaging rod and a limit switch, in which the application member approaches one end of the elongated material due to the movement of the first driving member, causing the engagement rod to come into contact with one end of the elongated material. This may cause a limit switch to be pressed to control the required relative distance between the elongated material and the application member. As this sensor, an engagement pin is provided at the tip of the first driving member by a spring or the like and protrudes with a constant spring force toward one end of the elongated material, and this engagement pin abuts on one end of the elongated material, Further, the relative movement of the first driving member toward the elongated material causes the end face of the elongated material to relatively push the engagement pin in the opposite direction, and the pushed movement inputs a signal to the limit switch. Can be done.
By inputting a signal from the limit switch, the first driving member can be stopped, and the application member can be driven to a predetermined distance from one end of the elongated material and then stopped.

The second driving member drives the application member in the vertical direction. In this case as well, the cylinder,
The application member is driven toward the center or centrifugally of the elongated material using a hydraulic cylinder or the like constituted by a piston or the like, and is brought close to the outer circumferential surface or inner circumferential surface of the elongated material.
A stopper is provided on the application member, and when the application member reaches a certain distance from the circumferential surface of the long material, the stopper is brought into contact with the long material to maintain a constant distance between the application member and the circumferential surface of the long material. Try to keep your distance. Note that the turning roller rotates the elongated material and makes it possible to apply paint to a constant width along the circumferential direction of the elongated material.

The apparatus for coating the circumferential surface of a circular cross-sectional material according to the present invention has the above-mentioned configuration. In this coating device, a long material is placed on a turning roller, and the turning roller is rotated, thereby rotating the long material. Then, the application member is brought close to one end surface of the long material by the first driving member in a direction substantially parallel to the central axis of the long material, and when the application member reaches a predetermined position, the first driving member is stopped, and then The application member is lowered by the second drive member, brought close to the peripheral surface of the one end of the elongated material, held at a constant position, and then a certain amount of paint is force-fed to the application member, which rotates from the application member. A certain amount of paint is discharged and applied onto the circumferential surface of a long material.

With the coating device of the present invention, since the coating member is guided by the first drive member and the second drive member to the circumferential surface of one end of the long material to be coated with paint, the worker can move the coating member for a long length. There is no need to carry the shaku material to the area to be coated. In addition, since the application member is returned to a position away from the position where the long material should be coated, it becomes easy to place the long material on the turning roller or to remove the long material from the turning roller. . In addition, by providing a sensor or a stopper, even if the placement position of the long material on the turning roller shifts, the sensor and stopper will guide the coating member to the predetermined position, so that coating will always be possible. It becomes possible to apply the coating to a predetermined peripheral surface portion.

Examples will be described below.

1 shows a schematic front view of a coating device that is a typical embodiment of the present invention. This coating device includes a turning roller 2 fixed to a foundation 1 such as concrete, a cart 3 placed on a rail 11 laid on the foundation 1,
It is composed of a first driving member 4, a second driving member 5, and a coating member 6 held on a truck 3, a high viscosity agent supply device 9 fixed on the truck 3, and the like.

The first drive member 4 is a first drive member fixed on the trolley 3.
It is composed of a guide 41, a first frame 42 guided by the first guide 41, and a hydraulic device 43 provided between the frame 42 and the high viscosity agent supply device 9. The first drive member 4 drives the first frame 42 in the left-right direction in the figure by moving the piston of the hydraulic device 43.

The second drive member 5 includes a second guide 51 fixed to the first frame 42 and extending in the vertical direction;
It is comprised of a second frame 52 guided by a guide 51, an electric motor 53 for driving the second frame 52 along the second guide 51, a gear mechanism 54, and a lifting hydraulic device 55 for application. The second drive member 5 drives the second frame 52 in the vertical direction by rotation of the electric motor 53.

The application member 6 includes a nozzle 61 that discharges the high-viscosity agent and a spatula 62 that applies the discharged high-viscosity agent to the outer peripheral surface of the long material W. This application member 6
is fixedly held at the tip of the second frame 52 via a lifting hydraulic device 55 for application.

Further, a sensor 7 is provided at the tip of the first frame 41.
is provided. This sensor 7 is the piston 7
1, an air cylinder 72, an abutment plate 73 fixed to the left end of the piston 71, and a switch mechanism 74 provided on the piston 71. The sensor 7 is normally moved leftward in the figure by the operation of the first driving member 4 with the piston 71 protruding from the air cylinder 72 to the left end in the figure. Then, the contact plate 73 at the left end contacts the end surface W1 of the long material W, and since the first drive member 4 is still operating, it is pushed to the right in the figure, and this movement is detected by the switch mechanism 74, While retracting the piston 71 to the right in the figure, the hydraulic device 43 of the first drive member 4 is stopped,
And the turning roller 2 is rotated. That is, this sensor 7 controls the distance between the first frame 42 of the first drive member 4 and the end surface W1 of the elongated material W. Thereby, the relative position of the end surface W1 of the elongated material W and the application member 6 in the left-right direction in the figure is determined. On the other hand piston 7
1 is retracted by the air cylinder 72, and the turning roller 2 is rotated.

Further, a stopper 8 is provided near the nozzle 61 of the application member 6. The electric motor 53 raises the second frame 52 to a predetermined position in advance depending on the size of the long material W, and the stopper 8 is placed on the outer peripheral surface of the long material W to be coated. They are brought into contact by the hydraulic device 55, thereby maintaining a predetermined distance between the tip of the nozzle 61 and the outer peripheral surface of the elongated material W.

This coating device is used with the cart 3 fixed at a predetermined position. Regarding the original position of each member,
The driving member 4 is located at the right end in the drawing, and the second driving member 5 is located at the upper end in the drawing. The contact plate 73 of the sensor 7 protrudes to the left end. Further, the turning roller 2 is stopped. In this state, the elongated material W is placed on the turning roller 2. After that, the first drive member 4 is driven, and the first drive member 4 is driven until the contact plate 73 comes into contact with and is pressed against the left end surface W1 of the long material W by the sensor 7.
The first frame 42 of the drive member 4 is driven to the left in the figure. The first drive member 4 is stopped by the input from the switch mechanism 74, the abutting plate 73 is driven rightward, and the turning roller 2 starts rotating.
Further, the second drive member 5 starts driving, and the application member 6
A stopper 8 fixed to is brought into contact with the outer peripheral surface of the elongated material W. Thereby, the second driving member 5 holds the tip of the nozzle 61 of the application member 6 at a constant position with respect to the outer peripheral surface of the elongated material W. In this state, the application member 6
A high viscosity agent is force-fed to the nozzle 61, and the high viscosity agent is discharged from the nozzle 61, and the discharged high viscosity agent is applied to the outer peripheral surface of the rotating long material W by a spatula 62 to a substantially uniform thickness.

By using the apparatus of this embodiment, the application of the high viscosity agent to the outer circumferential surface of the end of the long material is automated, making the work easier. In addition, even if the long material is slightly misplaced on the turning roller, the position of the coating member is corrected by the sensor.
The application member can always be moved to a predetermined position on the elongated material. For this reason, the paint can always be stably applied to a predetermined outer peripheral surface portion of the elongated material.

The present invention is not limited to the above embodiments, but
It is possible to apply not only to the outer circumferential edge but also, for example, to the central outer circumferential surface of the elongated material.

[Brief explanation of the drawing]

The figure is a schematic front view of a coating device according to an embodiment of the present invention. 1...Basic, 2...Turning roller, 3...
Dolly, 4...first driving member, 5...second driving member, 6...application member, 7...sensor, 8...stopper.

Claims (1)

[Scope of Claim for Utility Model Registration] A coating member having a nozzle for discharging paint, and a long material to be coated with the paint, which has a circular cross section and an axis substantially parallel to the longitudinal direction of the coating member, in a horizontal state. A set of two horizontal shaft turning rollers that are placed and rotated and have an axis parallel to the axis of the elongated material, and a direction in which the application member approaches and separates from one end surface in the axial direction of the elongated material. a first driving member that is driven along the axis of the elongated material; and a second driving member that lowers the application member in the vertical direction to bring it close to the circumferential surface of the elongated material; , comprising a stopper that comes into contact with an upper portion of the outer circumferential surface of the elongated material when descending to define the relative position in the vertical direction between the circumferential surface of the elongated material and the nozzle of the application member, and the first drive The member includes a sensor that detects a relative distance in the horizontal direction between the nozzle of the application member and one end surface in the axial direction of the elongated material, and the sensor controls the amount of movement of the first drive member in the horizontal direction. A coating device characterized by: