JPS5854620B2 - Pipe end inner spray device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming a hollow cylinder such as a pipe, and injecting a rust preventive material from both ends of the pipe.

When painting the outer circumference of steel pipes depending on their purpose, water may be used for cooling during the degreasing process to improve the adhesion of the paint film, so water enters the pipe from both ends, causing rust. As a countermeasure, a rust preventive material is applied from both pipe ends.

It is also used simply for rust prevention purposes.

However, in the manufacture of steel pipes, there are various pipe diameters, both long and short, and the axis of continuous flow also passes through processes in the forward and perpendicular directions.
Since the application process requires a short time, it is not possible to apply anti-corrosion oil inside the line, and manual work is often required off-line, resulting in inefficient work.

Also, since steel pipes have a bend called a nose bend at both ends,
Mechanization was also hindered by the inability to determine the positions of both tube ends for each tube.

In this invention, during the 5 to 6 second period when the steel pipe is temporarily stopped for marking the outer surface, etc., the spraying parts of the anti-corrosion oil spraying device installed at both ends of the pipe move forward to cover the outer periphery of the pipe end with a conical cylinder. This is a guide wrapper that is crimped so as to cover the pipe, and is installed along the direction of the pipe end to provide a rust-preventing oil spraying device that repeatedly sprays rust-preventing oil in the form of a spray onto each tube.It is installed in the production line. It exhibits high efficiency.

The equipment includes an installation frame, a spray device for spraying on the pipe end, a forward and backward movement device, a lifting device to accommodate various sizes of steel pipes, a spray device connected to the lifting device, and a cushion connected to the spray device by a copying device. This rust-preventing oil spraying device consists of a guide wrapper with a built-in device, and the rust-preventing oil spraying is limited to the inner surface of the steel pipe, and it is not desirable for the oil to leak to the outer surface of the pipe end.

However, the pipe end has the aforementioned curved nose, and the key point of this device is to spray in close contact with this curve without leaking, and the copying device between the spray device and the guide wrapper is effective in all directions, and The device must be able to withstand hundreds of thousands of continuous uses.

One embodiment of the present invention will be explained with reference to the drawings. Fig. 1a is a front view showing the entire device of the present invention, b is a side view showing the view A-A, and Fig. 2 is a view of only the spraying device of the device of the present invention. A detailed front view, FIG. 3A is a perspective view showing a long groove cut hole in the holding tube 39, and FIG.

1 is a steel pipe, and 2 is a pedestal (to follow the length of the steel pipe, the two pedestals 2 are equipped with a moving device.

(not shown in this figure), 3 is a moving rail for positioning the spraying device, 4 is a frame of the spraying device, 5 is a bracket fixed to the frame 4, 6 is a bracket for a moving nut for positioning, 7 is movable A nut, 8 is a wheel fixed to the bracket 5, 9 is a positioning screw shaft, 10 and 11 are bearings that support the tip and rear end of the screw shaft 9, 12 is a rotating bundle of the screw shaft 9, 13 is both sides of the top surface of the frame 4 14 is the frame of the spraying device, 15 is the rail for forward and backward movement provided in the
is a bracket fixed to the frame 14, 16 is a wheel fixed to the bracket 15, 1T is a cylinder for forward and backward movement of the spraying device, 18 is a pin that connects the device on the frame 14 to the cylinder 1γ as a whole at the bracket 15 position, 19, 2
0 is a link, 21 and 22 are pins, 23 is a link, 24 is a pin, 25 is a bracket arranged on both sides of the frame 14, 26 is a pin, 21 is a link, 28 is a screw shaft,
30 is a bundle, 31 is a spray body frame, 32 is a bracket fixed to the front and back on both sides of the spray body frame 31, 33 is a spray cylinder, and 34 is a paint conduit that passes through the center of the spray cylinder 33.

35 is a bearing that supports the paint conduit 34 and makes it rotatable;
6 is a nozzle attached to the tip of the paint conduit (spray material conduit) 34 for spraying the paint from the paint conduit 34, and 37 is a connecting tube fixed to the spray body 33, which has a B screw inside the tip and will be described later.
Screw together with 8.

Reference numeral 38 denotes a holding collar, which has a screw b on the side of the connecting cylinder 37, and has an elastic bellows 40 fixed on the opposite side; 39, a holding collar of the guide wrapper 41;
One or more long groove cut holes are bored in the part, and the retaining collar 38 is fixedly installed.

A guide trumpet 41 has a bellows 40 fixed thereon as shown in the figure, and has a trumpet-like shape on the blowing side, and has a cushioning material 42 on its inner conical part.

43 is a guide cylinder, a guide wrapper 41, a cushion material 4
2, and the cushioning material 42 hits the tube end.
The cushion portion 42 is also protected by copying and crimping by the action of .

Reference numeral 44 denotes blades fixed to the outer cylinder portion of the guide wrapper 41 on the side of the bellows 40, arranged at one or more equal intervals around the circumference, and fitted into the long groove cut hole of the section a of the holding cylinder 39 with a degree of smooth fit. , serves as a telescopic guide for the guide wrapper 41, and serves as a telescopic guide for the guide wrapper 41.
It has the role of preventing the torsion from being applied to the bellows 40.

Reference numeral 45 indicates a low rigidity joint connected to the paint conduit 34.

In this example, the elevating device is a link, and the advance/retreat device is an IJ.
Although the explanation has been made using the IJ knee shaft, cylinder, etc., it goes without saying that other means may also be used.

To explain the operation using a diagram, the guide wrapper 41 is positioned by the bundle 12 installed on the frame 2 according to the length of the steel pipe 1.
Turn the screw shaft 9 to move the frame 4 by moving the bracket 6.

That is, by moving the entire device, the distance from the tube end is set at an appropriate position.

Next, when the bundle 30 is turned, the screw shaft 28 moves back and forth, and the link 20 causes trouble on the links 23 and 27.
Raise and lower the spray body frame 31- with the guide wrapper 4.
1. The axis of the series of spraying devices of the coating conduit 34 is aligned with the axis of the steel pipe 1.

When the arrival signal of the steel pipe 1 is received, the cylinder 17 for forward and backward movement is actuated to move the entire device forward, and the guide cylinder 43 of the inner conical portion of the guide wrapper 41 comes into close contact with the end of the pipe.

To achieve close contact, the connecting tube 37, the retaining collar 38, the bellows 40, and the guide wrapper 41 are connected with the spray body 33 as the main body, and one or more long grooves are cut in the outer tubes of the connecting tube 37 and the retaining collar 38. The hole a and one or more blades 44 on the cylindrical outer periphery of the guide wrapper 41 slide in the axial direction,
In addition, the torsion generated in the guide wrapper 41 is received by the side surface of the blade 44, and the bellows 40, which is vulnerable to torsion, is protected.

Note that the 8 dimensions shown in the diagram of the guide wrapper 41 and the holding cylinder 3
The clearance f with the inner diameter 0 dimension of guide wrapper 4 is
The amount of tracing in all directions is 1.

The pre-spraying operation is thus completed, and after spraying, the cylinder 11 moves backward and forward repeatedly.

The guide wrapper 41 is replaced depending on the size and diameter of the guide tube 43 having a conical inner surface.

Its attachment and detachment are done using the screws 37 and 38 mentioned above.

As described above, spraying antirust oil from the pipe end to various pipe diameters is a device that prevents rust.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1a is a front view showing the entire device of the present invention, b is a side view showing the view A-A, and Fig. 2 is a detailed front view of only the spraying device of the device of the present invention. FIG. 3A is a perspective view showing the long groove cut hole of the holding tube 39, and FIG. 3B is a perspective view showing the blade 44 of the guide wrapper 41 that fits into the long groove cut hole. 1... Steel pipe, 2... Frame, 3...
...Rail, 4...Frame, 5...
Bracket, 6...Bracket, 7...
・Nut, 8...Wheel, 9...Screw shaft, 10, 11...Bearing, 12...
・Handle, 13...Rail, 14...
・Frame, 15...Bracket, 16...
...Wheel, 17...Cylinder, 18...
...Pin, 19,20...Link, 21,22
...Pin, 23...Link, 24...
...Pin, 25...Bracket l-126.
...Pin, 27...Link, 28...
...Screw shaft, 30...Handle, 31.
...Frame, 32...Bracket, 3
3. Curved spray cylinder, 34...Paint conduit, 35.
...Bearing, 36...Nozzle, 3γ...
...Connecting tube, 38...Retaining collar, 39...
...Holding tube, 40...Bellows, 41...
・Guide wrapper, 42...Cushion material, 43
...Guide cylinder, 44 ...Blade, 45.
...Rotary joint.

Claims (1)

[Claims] 1. A guide wrapper is disposed on the tip side of a spray cylinder connected to a lifting device and a forward/backward device via a flexible cylinder, and a nozzle is inserted into the inside of the spray cylinder and the flexible cylinder. A spray material conduit is provided through the guide wrapper so that the nozzle looks into the guide wrapper, and a predetermined number of long groove cut holes are provided on the outer periphery of the tip side of the spray cylinder, and the above-mentioned cut holes are provided on the outer periphery of the guide wrapper. A spraying device for the inner surface of a tube end, characterized in that a number of blades corresponding to the number of holes are provided, and the blades are fitted into the cut holes to enable the object to be coated to move forward and backward, and to move up and down.