JPH02305639A - Apparatus for preparing stainless steel lined pipe - Google Patents

Abstract

PURPOSE:To prepare a stainless steel lined pipe of stable quality by simple equipment by bonding the stainless steel foil, which is drawn in a pipe by the truck running in the axial direction of the pipe to be lined, to the entire inner surface of the pipe under pressure. CONSTITUTION:The plate-shaped stainless steel foil 4 wound around a coil 5 is sent by roller conveyors 3A, 3B and an adhesive is applied to said foil 4 at first on the lower stage roller conveyor 3B by an adhesive sprayer 6. This stainless steel foil 4 is curved into a cylindrical shape by the guide pipe 9 of a curving apparatus 7 and the curved stainless steel foil 4 is fed to the vicinity of the end part of a cast iron pipe 1A. The stainless steel foil 4 grasped by the chuck part 15 of a chuck apparatus 14 is drawn in the cast iron pipe 1A by the movement of a truck 11 in a b-direction. After the lining pressure rubber 17 of a stainless steel foil press-bonding apparatus 16 is inserted in the cast iron pipe 1A, the rod of a hydraulic cylinder 18 is drawn in and the pressure rubber 17 is expanded outwardly to certainly bond the stainless steel foil 4 to the entire inner surface of the cast iron pipe 1A under pressure through the adhesive.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an apparatus for manufacturing stainless steel lined pipes.

Conventional technology The conventional method for producing stainless steel lined pipes is to create a stainless clad steel plate by attaching stainless steel foil or thin stainless steel plate to a steel plate by explosion bonding or rolling.
A method was used in which this was made into a cylindrical can, and a method in which the stainless steel material and the sea bream were simultaneously drawn from a die.

Problems to be Solved by the Invention However, when stainless clad steel pipes are manufactured using conventional methods such as explosion bonding, rolling, and drawing, there are problems in that the equipment becomes large, resulting in high costs and unstable quality.

The present invention solves the above-mentioned problems, and aims to provide a stainless steel lined pipe manufacturing apparatus that can easily produce stainless steel lined pipes of stable quality in a short time at low cost. It is something.

Means for Solving the Problems In order to solve the above problems, the present invention provides a conveying means for conveying stainless steel foil to the vicinity of the end of a pipe to be lined;
An adhesive application means for applying an adhesive to the stainless steel foil conveyed by the conveyance means, a bending means for pressing the stainless steel foil to curve it into a cylindrical shape, a cart that runs in the axial direction of the pipe, and the cart. The vehicle is installed in the
a chuck means for gripping the stainless steel foil curved into a cylindrical shape and pulling it into the tube; and a crimping device provided on the truck for crimping the stainless steel foil drawn into the tube over the entire inner surface of the tube as the truck runs. It is equipped with means.

Effect With the above structure, while the stainless steel foil is being conveyed by the conveying means, the adhesive is first applied to one side by the adhesive applying means, and then the stainless steel foil is pressed by the bending means so that the adhesive-applied surface becomes the outer surface. The pipe is bent into a cylindrical shape, and then transported by a transporting means to near the end of the pipe to be lined. Then, the cylindrical stainless steel foil curved into a cylindrical shape is gripped by the chuck means and drawn into the tube by the movement of the cart. Thereafter, the stainless steel foil drawn into the tube is crimped over the entire inner surface of the tube by the crimping means as the cart moves. In this way, stainless steel lined pipes of stable quality can be obtained with simple equipment.

Example Embodiments of the present invention will be described below based on the drawings.

In Fig. 1, IA and IB are cast iron pipes to be lined, for example, with a nominal diameter of 100 m and a length of 4 m.
These cast iron pipes IA and 1B are supported vertically in parallel to each other by a support stand 2. On one side of the support stand 2 are upper and lower 2
A roller conveyor device 3A as a conveying means consisting of stages,
3B is cast iron pipe IA.

The stainless steel foil 4 sent out from the stainless steel foil coil 5 arranged along the axial direction of the IB and provided below the end of the lower roller conveyor device 3B is sent from above the lower roller conveyor device 3B to the upper roller conveyor device. 3A to near the end of the cast iron pipe IA. An adhesive spray device 6 is provided on the lower surface of the upper roller conveyor device ff3A and extends downward.
As a result, the adhesive is sprayed and adhered to the upper surface of the stainless steel foil 4 being conveyed on the lower roller conveyor device 3B. The stainless steel foil 4 is attached to the lower roller conveyor device 3.
When the paper is delivered from B to the upper roller conveyor 3A, it is inverted, so that when the paper is delivered to the upper roller conveyor 3A, the surface to which the adhesive is applied is reversed from the upper surface to the lower surface. On the upper roller conveyor device 3A, there is provided a bending device 7 for bending the conveyed stainless steel foil 4, and an air cylinder 8 disposed downstream of the bending device 7. That is, a cylindrical guide pipe 9 is disposed in the bending device 7 in close proximity to the rollers of the roller conveyor device 3A so that its axis is along the conveying direction of the roller conveyor device 3A, and the stainless steel foil 4 is While being pinched and pressed between the pipe 19 and the rollers of the roller conveyor device 3A, it is curved into a cylindrical shape along the guide pipe 9 with the adhesive surface facing outward, as shown in FIG. . The air cylinder 8 on the downstream side of the bending device 7 has a rounded rod tip, and as shown in FIG. is always in a predetermined shape and position to prevent the seam from reversing. A cutting device (not shown) for cutting the stainless steel foil 4 is provided at an arrow point fx (see FIG. 1) between the air cylinder 8 and the end of the cast iron pipe IA.

On the other side of the support base 2, a cart 11 is provided that runs on a rail 10-E arranged along the axial direction of the cast iron pipes IA and IB, and this cart 11 carries a sprocket chain 12. On the upper part of the carriage 11 driven by the motor 13 through the
A chuck device 14 is provided that can be inserted into and removed from the cast iron pipe IA by running the chuck device 14.

This chuck device 14 is constructed by providing a chuck part 15 for gripping stainless steel foil at the tip of a support rod 22 extending in the direction of the tube axis of the cast iron pipe IA. At the bottom of the trolley 11, which is capable of drawing the stainless steel foil 4 into the cast iron pipe IA by moving the trolley 11, there is a bar extending in the axial direction of the cast iron pipe IB. A stainless steel foil crimping device 16 that can be inserted and removed is provided. A cylindrical lining pressurizing rubber 17 is provided at the tip of the stainless steel foil crimping device 16, and a piston rod of a hydraulic cylinder 18 built in the truck 11 is installed before and after the lining pressurizing rubber 17. A front plate member 19 is connected to the front plate member 19 via an egress rod 23, and a fixed rod 2 is connected to the trolley 11.
A rear side plate member 21 fixed through the 0 is disposed. Then, by retracting the front plate member 19 with the hydraulic cylinder 18, the inner pressurized rubber 17 is moved to the front plate member 19.
It is pressed and deformed between the rear plate member 21 and the rear plate member 21, and extends outward.

Next, the flow of the stainless steel foil lining process using the above manufacturing apparatus will be explained. The plate-shaped stainless steel foil 4 wound around the coil 5 is sent by the roller conveyor devices 3A and 3B, and adhesive is first applied to the upper surface by an adhesive spray device r116 on the lower roller conveyor device 3B. Then, when this stainless steel foil 4 is sent from the lower roller conveyor device 23B to the upper roller conveyor device 3A, it is turned upside down so that the lower surface side is the surface to which the adhesive is applied.
When being carried out by the upper conveyor device 3A, it is bent into a cylindrical shape by the guide pipe 9 of the bending device 7. The curved stainless steel foil 4 is adjusted to its joint shape at the tip of the air cylinder 8, and is conveyed to the vicinity of the end of the cast iron pipe IA. Here, the truck 11 is traveling in the direction a, and the chuck part 15 of the chuck device 14 provided on the upper part of the truck 11 is inserted into the cast iron pipe IA by the movement of the truck 11, and then the chuck part 15 is inserted into the cylindrical stainless steel pipe. 4, and the gripped stainless steel foil 4 is drawn into the cast iron pipe IA by the movement of the cart 11 in the direction b. The stainless steel foil 4 drawn into the cast iron pipe IA is cut from the stainless foil 4 on the roller conveyor devices 3A, 3B by a cutting device, and the chuck portion 15 is separated from the stainless foil 4. Thereafter, the cast iron pipe IA on the upper stage of the support stand 2 into which the stainless steel foil 4 has been drawn is moved to the lower stage of the support stand 2. Then, the cart 11 is moved in the direction a, and the pressurized rubber lining 17 of the stainless foil crimping device 16 is transferred to the roller conveyor 3A on the cast iron pipe IB.

3B side end, by retracting the rod of the hydraulic cylinder 18, the lining pressurizing rubber 17 is bulged out to the outside, and as a result, the stainless steel foil 4 drawn into the pipe is crimped onto the inner surface of the cast iron pipe IB. Ru. In this state, by moving the cart 11 in the b direction, the lining pressurized rubber 17 is pulled out to the r4A side other than the cast iron pipe IB while keeping it in an overhanging state, and the stainless steel foil 4 is attached to the inner surface of the cast iron pipe IB through the adhesive. The entire surface is securely crimped.

In addition, when the cast iron pipe IA at the upper stage position where the stainless steel foil 4 has already been drawn is moved to the lower stage of the support base 2, the support base 2
Another cast iron pipe IA is placed on the upper stage. Then, by moving the cart 11 in the b direction, the stainless steel foil 4 is drawn into the upper cast iron pipe IA and the stainless steel foil 4 is crimped onto the lower cast iron pipe IB at the same time.

Further, in the above embodiment, a case has been described in which the pipe lining the stainless steel foil 4 is made of cast iron, but the pipe is not limited to this.

Effects of the Invention As described above, according to the present invention, stainless steel lined pipes can be manufactured with simple equipment, manufacturing costs can be reduced, and stainless steel lined pipes can be manufactured with stable quality.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic view showing a stainless steel lined pipe manufacturing apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 are a perspective view and a sectional view of a main part of the same manufacturing apparatus. IA, IB...Cast iron pipe, 2...Support stand, 3A, 3B
...Roller conveyor device, 4...Stainless steel foil, 6
... Adhesive spray device, 7... Curving device, 8...
- Air cylinder, 9... Guide pipe, 11... Truck, 14... Chuck device, 16... Stainless foil crimping device, 17... Lining pressure rubber, 18... Hydraulic cylinder.

Claims (1)

[Claims] 1. A conveyance means for conveying the stainless steel foil to the vicinity of the end of the pipe to be lined; an adhesive application means for attaching an adhesive to the stainless steel foil conveyed by the conveyance means; a curving means for curving the stainless steel foil into a cylindrical shape; a cart running in the axial direction of the tube; a chuck means provided on the cart for gripping the stainless steel foil curved into a cylindrical shape and pulling it into the tube as the cart runs; 1. An apparatus for producing a stainless steel lined pipe, comprising: a crimping means that is provided on a truck and presses the stainless steel foil drawn into the tube over the entire inner surface of the tube as the truck runs.