KR950013499B1 - Heating devices of pipe for making stainless steel roller - Google Patents

Abstract

The heating apparatus improves the productivity of stainless steel dual pipes by supplying the electric current to both the ends of the stainless steel pipe and generating resistant heat. The heating apparatus comprises (A) the upper and lower bodies(401, 402) with hydraulic cylinders(407) attached to a connecting rod(409); (B) an electric current supplier with a contact terminal (414) equipped a tapered bench(418) to operate a hydraulic cylinder(419).

Description

Heating device for tubular body for roller production of stainless steel

1 is an overall configuration diagram of the present invention.

2 is a cross-sectional view of the heating vessel of the present invention.

3 is an enlarged view of one side contact terminal of the present invention.

4 is a partial perspective view of the heating vessel of the present invention.

5 is a contact terminal device of the present invention.

6 is a longitudinal cross-sectional view of the heating vessel portion of the present invention.

7 is a cross-sectional view of the heating vessel of FIG.

8 is an exemplary view in which the clamp device of the present invention is locked.

9 is an exemplary view in which the clamp device of the present invention is peeled off.

10 is a perspective view of the object of the present invention.

11 is a cross-sectional view of the object of the present invention.

* Explanation of symbols for main parts of the drawings

2: input tray 202: roller

4: heating tube 41: apparatus stand

42, 43: support 45: fluid pressure cylinder

46: operating rod 47: operating port

48: coil spring 44: clamp

401: heating cylinder body 402: heating cylinder body

403, 404: Between fastenings 405, 406: Fastening holes

407: hydraulic cylinder 408: working rod

409: fastening rods 410, 411: thermal insulation wall

412: fixed piece 413: fluid pressure cylinder

414: contact terminal 415: incision

416: operating port 417: guide

418: operating table 419: hydraulic cylinder

420: apparatus table 421: fluid pressure cylinder

422: operating port 423: contact terminal

424: incision 426, 427: connecting piece

428: connecting pin 429: protrusion

431: fluid pressure cylinder 432: protruding pieces

433: operating piece 435: connecting piece

437 body pressure cylinder 439

450: hydraulic cylinder 451: operating rod

5: stainless steel pipe 501: steel pipe

50: weld

The present invention relates to a heating device for a stainless steel pipe to make a large stainless steel roller (about 15 cm in diameter and about 2 m or more in length), and more specifically, to embed a stainless steel pipe in a heating chamber and supply current from both ends thereof. Therefore, the stainless steel pipe can be heated based on the resistance heat, and the core is inserted into the heated pipe to make a double tube and easily drawn out so that efficient work can be achieved.

Conventionally, in order to make a roller made of stainless steel, first, a thick pipe is manufactured to obtain roundness and straight processing through surface processing. Therefore, the wall thickness of the pipe material, which is the body of the roller, must be made very thick and highly skilled. Technicians have to do the round and straight processing by cutting the surface. There is a drawback that the product price becomes expensive because the raw material is lost and the working time is long and mass production is not possible.

Therefore, in order to improve this, a substitute that can replace the function of stainless steel pipe by hard-plating the surface of iron pipe is manufactured and used, but this also has a lot of difficulties in manufacturing, so it is not a smooth product. There is a situation.

The present invention has been made in order to correct the above drawbacks, as a result of making a thin stainless steel pipe and the steel pipes are put into the inside to combine the roller material of the double-walled pipe to be a double circumference to make the conventional drawbacks To solve this problem is to develop a heating apparatus of the present invention.

Hereinafter will be described in detail with reference to the drawings of the present invention.

1 to 9 show the device of the present invention in detail. That is, the heating apparatus of the present invention is composed of a heating cylinder (4) and the accessory, the heating cylinder (4) is of a constant length consisting of a heating cylinder lower body 401 and the heating cylinder 402, as shown in FIG. As shown above, the outer support portion 42 is connected to the apparatus support portion 43 by the connecting pin 435, and a fluid pressure cylinder 437 is installed between the support portion and the apparatus stage to install the heating tube. It is configured to lie horizontally on the table 41 or to stand vertically next to the device table. The heating cylinder lower body 401 and the heating cylinder 42 are half-divided to form connecting pieces 426 and 427 at the rear connection portion. By connecting pins 428 and forming protrusions 429 and 432 at right angles to the connecting pieces 426 and 427 to install a fluid pressure cylinder 431 at the end of the projecting piece 429 of the heating cylinder. It can be connected with the connecting pin 430 to connect the operation rod 433 to the end of the lower protrusion piece 432 to open and close the upper and lower bodies by the fluid pressure. Fasteners 403 and 404 having fastening holes 405 and 406 formed in the opening and closing portions thereof, and fastening connected to the rod-408 of the fluid pressure cylinder 407 operated at right angles thereto. The rods 409 enter and exit the fastening holes 405 and 406, and circular heating chambers (A) are formed in the upper and lower bodies in the longitudinal direction. 411 is attached to close the heating tube so that the heat inside the heating chamber is not dissipated to the outside and the operating rod of the hydraulic cylinder (45) between the device stage 41 and the heating cylinder lower body (401) The clamp 44 is mounted on the support 49 so as to be pressurized by the operation opening 47 operated by the 46 and relaxed by the coil spring 48 so that the heating tank can be attached or detached from the mounting frame. It is composed.

On the other hand, the heating chamber (a) is provided with a current supply unit (b) (c) at the inlet and the outlet side, and the current supply unit (c) at the outlet side is installed at the stationary piece 412 to operate toward the center of the heating chamber. It is attached to the inner surface of the fixing piece 412 to the operation rod of the cylinder 413 to install a contact terminal 414 having a cutout 415 on the outer circumference and a tapered operation port 416 to the center of the two-stage The outer diameter of the contact terminal 414 is configured to expand and contract as the fluid pressure cylinder is operated, and the inlet side current supply part (b) moves the operating table 418 to the guide 417 installed at right angles on the mounting table 41. Installed and reciprocated in a direction perpendicular to the heating cylinder body by the operation rod-451 of the fluid pressure cylinder 450 installed in the guide, and installed on the inside of the operating platform 420 fixed to the outside of the installation The operating rod 419a of the fluid pressure cylinder 419 allows the hydraulic cylinder to reciprocate in the direction of the heating cylinder body. The operation of the two-stage fluid pressure cylinder 421 having a cylindrical contact terminal 423 having an incision 424 on its surface and inserting a tapered actuator 422 in its center and fixing it to the outside of the operating table It is configured to stretch the outer diameter of the contact terminal 423 by operating as a rod.

According to the present invention, the heating tube 1 is placed on the apparatus table, and then the heating cylinder is opened, and the stainless steel pipe 5 is placed in the heating chamber so that the contact terminal is introduced into the stainless steel pipe. Next, close the heating cylinder and fasten it with a fastening rod, and move the cylinders 413 and 421 toward the pipe to enlarge the contact terminals 423 and 414 of the current supply part (b). The current contact terminals on both sides which are introduced into the tube are enlarged in the stainless steel pipe (5) to be in close contact with the stainless steel pipe. Therefore, if a predetermined current is supplied to the contact terminal, resistance heat is generated in the stainless steel pipe and the stainless steel pipe is closed. It is heated and its temperature rises to about 600 degrees Celsius in an instant, so that the stainless steel pipe is heated to be flexible.

At this time, when the stainless steel pipe is stretched, the contact terminal is stretched to smoothly supply power in response to the expansion and contraction, so that perfect current can be supplied until the required heating state is reached, thereby achieving perfect heating in the heating chamber. When the heating is completed, the current supply is stopped, the current supply unit is disconnected, the heating chamber inlet is opened, and the high speed feeder is operated to heat the processed iron pipe 501 that is waiting on the input plate. The pipe is forced into the pipe to obtain a double wall pipe, and the clamp is released to separate the unit and the heating cylinder, and the hydraulic cylinder 437 is operated to erect the heating cylinder 4 vertically, and then separately to the upper side of the standing heating cylinder. The pipe holder (D) installed is put into the iron pipe, and the pipe (5) made of a double pipe is opened. In addition, if the product is allowed to cool down at room temperature by opening the heating tube (4) and cooling the product in the heating chamber, the heated stainless steel pipe is cooled and shrunk in this process, so it closely adheres to the surface of the iron pipe and is a perfect double wall. You get a pipe material (figure 10) and use it as a roller material.

Therefore, the heating tube of the present invention is a device that can be installed horizontally or vertically standing while being open and close insulation and can be effectively used even in a relatively small place, easy heating of the material to be heated and lowered, and heated stainless pipe Since the steel pipe can be easily introduced into the pipe and can be drawn without impact, the production of the double pipe can be obtained quickly and conveniently and economical with low power loss.

Claims (1)

Half of the heating tube lower body 401 and the heating cylinder 402 is connected to the connecting piece 426 (427) of the rear connection portion is connected to the connecting pin 428, the heating tube formed in the front opening and closing portion 403, 404 (4) is rolled up on the mounting table 41 to connect the outer support portion 42 with the mounting table support portion 43 and the connecting pin 435, and to install a fluid pressure cylinder 437 between the mounting table and the support portion, (403) (404) is equipped with a fluid pressure cylinder (407) on the side of the fastening hole 405, and attaching the fastening rod (409) to the operation rod-408, the fastening rod has two fastening holes (405, 406) ) To form a heating chamber (A) by attaching semi-insulated insulating material (410, 411) of a heat insulating insulating material to the inner wall of the heating tube (4) to form a heating chamber (A), the device table 41 and the heating tube (401) Clamps 44 mounted on the support 49 are pressurized by the actuating holes 47 which are advanced back and forth by the actuating rods 46 of the fluid pressure cylinder 45 and relaxed by the coil springs 48. ) The current supply part (b) of the current supply part (b) installed at the inlet and the outlet side of the heating chamber (a) is provided with a contact terminal 414 at the fixing piece 412, and cut off on the outer circumference thereof. A two-stage fluid pressure cylinder 413 that forms a portion 415 and is provided with a tapered actuator 416 in the center thereof so that the tapered actuator is mounted outside the fixing piece 412 to operate toward the center of the heating chamber. Fluid supply installed on the outside of the guide by installing the operating table 418 on the guide 417 installed at right angles on the device table 41 so that the current supply part (b) at the inlet side is connected to the rod. The operating rod 419a of the fluid pressure cylinder 419 which is connected to the operating rod-451 of the cylinder 405 and installed on the inside of the operating table 418, and fixed to the outside of the operating table 418. And a cylindrical contact terminal 423 attached to the inner surface of the device stand to form a cutout 424 on the outer circumferential surface and tapered in the center thereof. By operation of the East 422 two-stage hydraulic cylinder (421) inserted by fixing them to the works for the outer-de (421a) with the heating device of the roller tube for manufacturing stainless steel is by connection.