KR100916680B1 - Manufacturing apparatus for pre-insulated pipe and method thereof - Google Patents

Abstract

A manufacturing apparatus for a keeping warm pipe and a method thereof are provided to produce a keeping warm pipe automatically by installing a driving roller, a pre processor, a spray coating unit, a waterproof material extruder, and a chiller. A manufacturing apparatus for a keeping warm pipe comprises a conveyor(100), a plurality of driving rollers(200), a pre processor(300), a spray coating unit(500), a waterproof material extruder(700), and a chiller(800). The conveyor transfers an inner pipe(1000). A plurality of driving rollers delivers the torque transferring the inner pipe. The pre processor progresses the pre-process operation for washing the exterior of the inner pipe and coating the inner pipe with insulating material(1300). The spray coating unit coats the outer circumference of the pre-processed inner pipe with the insulating material. The waterproof material extruder reels the waterproof material in a cloth shape in the outer circumference of the inner pipe. The chiller cools the keeping warm pipe(2000) in which the insulating material and the waterproof material are formed.

Description

Manufacturing Apparatus and Pre-Insulated pipe and Method Thereof}

The present invention relates to a heat insulating tube manufacturing apparatus and a manufacturing method, and more particularly to a heat insulating tube manufacturing apparatus and a manufacturing method that can automatically produce a heat insulating tube of various sizes and lengths irrespective of the size of the inner tube.

In general, the handling of high or low temperature materials such as district heating equipment or chemical industry used for heavy hot water supply, steam pipe below 250 ℃ for steam steam supply, proper temperature maintenance supply pipe for heating supply, or water and sewerage for pipe freeze prevention. Inner tube is widely used in case of need. The inner tube used for the above-mentioned uses may vary from 15 mm to 3,000 mm in the type and diameter of the tube according to each purpose. When the inner tube is installed in the basement or the ground as it is, there is a problem that can not serve the purpose according to the type of heat insulation because heat loss occurs.

In order to solve this problem, a method of insulating the inner tube using a heat insulating material on the outer peripheral surface of the inner tube has been variously invented.

The double heat insulation tube is a kind of heat insulation pipe, which includes an exterior buried underground, an inner pipe used as a flow path for a fluid to be transferred, and a filler filled between the exterior and the inner pipe and having a thermal insulation function.

The conventional double insulation tube was manufactured by separately manufacturing the exterior and foaming the filler on its inner circumference. That is, a double insulation tube is manufactured by separately manufacturing an inner tube and an outer tube, inserting an outer tube into the inner tube, and sealing both ends between the outer tube and the inner tube, respectively, and punching the filling hole into the outer tube to foam the filler through the filling hole. It was.

However, since the conventional double insulation tube is manufactured by hand, there is a problem in that the productivity is low, and in the process of foaming the filler between the exterior and the inner tube, the filler does not completely adhere to the exterior, thereby forming an air layer. The air layer causes condensation due to an external temperature difference and the like, and the double insulation tube is damaged due to the condensation. In addition, the air layer between the outer tube and the inner tube has a problem of lowering the thermal insulation effect of the double insulation tube.

In addition, the continuous operation is not possible due to the manual work, there is a problem that the replacement cost and replacement time increases because the various equipment must be replaced according to the size of the pipe. In addition, there is a problem in that the length of the tube is limited because the continuous operation is difficult, so that the consumer can not manufacture the insulation tube of the desired length.

Accordingly, an object of the present invention is to provide a heat insulating tube manufacturing apparatus and a method for automatically producing heat insulating tubes of various sizes and lengths, regardless of the size of the inner tube.

An object of the present invention as described above is a conveyor for transporting the inner tube; A plurality of driving rollers provided at one side of the conveyor to transmit rotational force for transporting the inner tube; A pretreatment device provided with one end portion of the conveyor to perform a pretreatment operation for washing and applying an insulation to an outer surface of an inner tube to be inserted; A spray coating apparatus for spraying and applying an insulating material to an outer circumferential surface of an inner tube in which a pretreatment operation is performed by a pretreatment apparatus; A waterproof material extruder which is rotatable to correspond to the size of the inner pipe on the inner circumferential surface of the inner pipe made of the heat insulating material coating, and extruding the waterproof material into a fabric shape using a T-die method; And it can be achieved by the thermal insulation tube manufacturing apparatus comprising a; a cooling device for cooling the thermal insulation tube formed with a heat insulating material and a waterproof material.

The outer diameter of the inner tube used here is 15 mm to 3,000 mm.

In addition, the drive roller further includes a drive motor that can move along the width of the conveyor to adjust its width according to the outer diameter of the inner tube.

In addition, one side of the driving roller is further provided with an inclination adjusting unit for adjusting the inclination of the driving roller to adjust the traveling speed and the rotational speed of the inner tube. Here, the inclination adjustment unit may adjust the installation angle of the drive roller to 0 ° to 90 ° to adjust the rotation pitch of the drive roller to 10mm to 500mm based on the inlet direction of the inner tube.

In addition, the pretreatment apparatus, the tube drying apparatus for removing moisture in the inner tube to remove rust on the outer surface of the inner tube; An outer surface shorter for removing the scale formed on the surface of the dried inner tube; An air device for removing dust from the shorted inner tube; And a preheating device for preheating the tube to a predetermined temperature for smooth coating of the heat insulating material on the outer circumferential surface of the inner tube. Here, the tube drying apparatus is dried by gas or electric so that the tube surface temperature is 40 ℃ to 70 ℃.

In addition, the air device, a steam cleaner for removing dust in the inner tube; And a water remover for removing oil and water from the inner tube.

The preheater is an induction that preheats at a high frequency, an electrically preheated die or a heating tube. Here, the preheating device can adjust the power used from 0 kW to 1,000 kW depending on the type of inner tube or heat insulating material.

In addition, between the pretreatment device and the spray coating device is further provided with a sensing line wrapping device for supplying a sensing line for leak detection on the outer peripheral surface of the inner tube and a bare copper wire for the insulation of the inner tube. Here, the sensing line wrapping apparatus, the sensing line angle adjusting device for adjusting the angle so that the sensing line and the bare copper wire corresponds to the rotation pitch of the inner tube; And a tension device for transmitting rotational tension to the sensing wire and the bare wire.

In addition, the spray coating device, vermiculite spraying device for vermiculite coating; And an insulating material spraying device for coating an insulating material on an outer circumferential surface of the vermiculite coated inner tube. Here, the spray coating device sprays the heat insulating material at a pressure of 120 bar to 140 bar.

 In addition, the spray coating apparatus further includes a molding machine such as a circular touch roller to smoothly clean the surface of the insulation layer after spraying the insulation.

In addition, between the spray coating device and the waterproofing material extruder further comprises an adhesive film supply device for supplying a film-like adhesive film for improving the waterproofness and adhesion.

In addition, the waterproof material extruder, a waterproof adhesive extruder to improve the waterproof property, and supply a waterproof adhesive for smooth adhesion of the waterproof material; And a waterproof resin extruder for supplying a waterproof resin on top of the waterproof adhesive.

The apparatus further includes a tube end treatment device for cutting or trimming both ends of the cooled insulation tube.

In another category, an object of the invention is a first step of conveying an inner tube; A second step of pretreating the inner tube before applying the insulation and the waterproofing material; A third step of winding a sensing line and a moving line for detecting leakage of the inner tube and keeping warm on an outer circumferential surface of the inner tube; A fourth step of spraying and coating an insulating material on the outer circumferential surface of the inner tube wound with the sensing wire and the bare wire using a spray device; A fifth step of applying a waterproof material to the outer circumferential surface of the inner tube coated with the heat insulating material using a T-die rotatable to correspond to the outer diameter of the inner tube; And a sixth step of cooling the insulating tube in which the heat insulator and the waterproofing member are formed.

Here, the second step may include a step 2-1 of removing moisture from the inner tube to remove rust on the outer surface of the inner tube; Step 2-2 of removing the scale formed on the surface of the dried inner tube; A 2-3 step of removing the dust generated in the 2-2 step; And 2-4 steps of preheating the inner tube to a predetermined temperature so that the heat insulating material can be smoothly coated on the outer surface of the inner tube.

In addition, the fourth step may include a fourth step of coating the vermiculite by spraying vermiculite on the outer circumferential surface of the inner tube wound with the detection line; 4-2 step of coating by spraying the insulating material on the outer peripheral surface of the inner tube coated with vermiculite; And a fourth step of smoothly forming an outer circumferential surface of the inner tube coated with vermiculite and heat insulating material. Here, the fourth step may further include a fourth to fourth step of wrapping the film adhesive for improving the adhesiveness and insulation of the vermiculite and the heat insulating material coated on the outer circumferential surface of the inner tube.

In addition, the fifth step is a fifth step of extruding the waterproof adhesive using a T-die for smooth adhesion of the waterproofing material to the outer peripheral surface of the inner tube coated with the heat insulating material; And a fifth step of extruding the waterproof resin on the extruded waterproof adhesive.

In addition, after the sixth step, and further comprising a seventh step of cutting the insulation tube to a predetermined length, and cutting or trimming both ends of the cut insulation tube to facilitate the construction.

According to the present invention there is an effect that can automatically produce a thermal insulation tube of various sizes and lengths. This reduces the manufacturing time and has the effect of reducing the manufacturing cost.

In addition, since the insulation layer and the waterproofing material are attached to the outer circumferential surface of the inner tube so that the air layer is not formed by the automation device, the thermal insulation and the waterproofing property of the thermal insulation pipe are improved.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

< Insulation  Configuration of Manufacturing Equipment>

Figure 1 shows a schematic diagram schematically showing the overall configuration of the heat insulation tube manufacturing apparatus according to the present invention, Figure 2 shows a plan view of the drive roller according to the present invention.

Conveyor 100 according to the present invention is a device for transporting the inner tube 1000 and the thermal insulation tube 2000 is introduced throughout the insulation tube manufacturing apparatus 10. One side of the conveyor 100 is provided with a driving roller 200 for providing power for transporting the inner tube (1000). At this time, as shown in Figure 2, the driving roller 200, the width of the driving roller 200 along the width of the conveyor 100 so as to correspond to the size according to the outer diameter of the various types of inner tube 1000 to be introduced. It has a drive motor 210 that can move. Since the inner tube 1000 varies in size from 15 mm to 3,000 mm in diameter depending on the intended use, the width of the driving roller 200 must be adjusted for smooth operation. When the size of the outer diameter of the inner tube 1000 is small, the conveyor 100 is moved by using the driving motor 210 to move the driving roller 200 provided at one side of the driving rollers 200 provided at both sides of the conveyor 100. The distance between the driving rollers 200 provided on both sides is reduced, and when the size of the outer diameter is large, the distance between the driving rollers 200 is widened by using the driving motor 210. In addition, the tilt control to adjust the inclination of the drive roller 200 to adjust the installation angle of the drive roller 200 in order to adjust the moving speed and rotation speed of the inner tube 1000 is injected into one side of the drive roller 200. The unit 220 is provided. The tilt adjuster is a device for adjusting the tilt of the driving roller 200 by using hydraulic pressure or pneumatic pressure. The smaller the angle formed between the central axis of the drive roller 200 and the longitudinal central axis of the conveyor 100 by using the tilt adjuster, the faster the feed speed of the inner tube 1000 is and the greater the rotation period is. However, if the feed rate is fast, the work time is reduced, but the efficiency of the work is reduced, and if the feed rate is slow, the work efficiency is increased, but the work time is also increased. The inclination adjusting device may adjust the rotation angle of the driving roller 200 to 0 ° to 90 ° based on the entrance direction of the inner tube 1000 to adjust the rotation pitch of the inner tube 1000 to 10 mm to 500 mm. The rotation pitch of the inner tube 1000 can be calculated by the following [Equation 1].

P = outer diameter of inner tube × 3.14 × tan α

Here, P represents the rotation pitch of the inner tube, and α represents the inclination angle of the drive roller.

The pretreatment device 300 according to the present invention is provided with one end portion of the conveyor 100 into which the pipe is inserted, to wash the outer surface of the inner tube 1000 to be injected, and to make a smooth application of the heat insulator 1300. to be. The pretreatment device 300 is composed of the inner tube drying device 310, the outer shorter 320, the air device 330 and the preheater 340.

The inner tube drying apparatus 310 according to the present invention is a pretreatment operation for removing the rust of the outer surface of the inner tube 1000, which is a device for removing the moisture of the tube using a gas method or an electric method. The inner tube drying apparatus 310 removes moisture from the inner tube 1000 by heating the surface temperature of the inner tube 1000 to 40 ° C. to 70 ° C. using gas or electricity.

The outer surface shorter 320 according to the present invention is a device for removing a scale such as an oxide layer formed on the surface of the inner tube 1000. The outer surface shortening machine 320 is used when the material of the inner tube 1000 is a steel pipe or stainless steel.

Air device 330 according to the present invention is a device for removing the dust generated while removing the scale formed on the surface of the inner tube 1000 in the outer shorter 320, a steam cleaner 331 for removing dust and The water remover 332 for removing oil and water is integrally provided. Here, the steam cleaner 331 is a device for spraying high-temperature, high-pressure steam to the inner tube 1000 to remove dust and the like on the surface of the tube. In addition, the water remover 332 is a device for removing oil and water generated by the steam cleaner 331.

The preheating device 340 according to the present invention is a device for preheating the inner tube 1000 to a predetermined temperature so that the heat insulating material 1300 is smoothly applied to the surface of the inner tube 1000. The preheater 340 may use an induction for preheating the inner tube 1000 using a high frequency or a die or heating tube for preheating the inner tube 1000 electrically. At this time, the preheating device 340 may adjust the preheating temperature according to the type of the inner tube 1000 or the heat insulator 1300 to be used by being able to adjust the power used to 0㎾ to 1,000㎾. The preheating device 340 may preheat the inner tube 1000 to 50 ° C to 60 ° C.

 The sensing line wrapping apparatus 400 according to the present invention is a sensing line 1100 for detecting a leak on an outer circumferential surface of the inner tube 1000, and a device for supplying a bare copper wire for insulating the inner tube 1000, and a sensing line 1100. ) And a bare wire winding device. The sensing line wrapping device 400 is a sensing line angle adjusting device for adjusting the supply angle so that the sensing line 1100 and the bare wire corresponds to the rotational pitch of the inner tube 1000, and the sensing line 1100 and the bare wire are not sag. It consists of a tension device for transmitting the rotational tension to be wound on the outer peripheral surface (1000).

Figure 3 shows a detail of the spray coating apparatus and the adhesive film supply apparatus according to the present invention. As shown in FIG. 3, the spray coating apparatus 500 according to the present invention is a device for applying the heat insulating material 1300 to the surface of the inner tube 1000 wound around the sensing line 1100 and the bare wire. The spray coating apparatus 500 is to coat the heat insulating material 1300 on the outer surface of the vermiculite injection device 510 and the vermiculum 1200 coated inner tube 1000 to coat the vermiculum 1200 on the outer surface of the inner tube 1000. The heat insulating material spraying device 520 is comprised in plurality each. Here, the vermiculite injector 510 and the insulator injector 520 are sprayed by coating the vermiculite 1200 or the insulator 1300 using a pressure of 120 bar to 140 bar. In addition, the vermiculite injection device 510 and the heat insulating material injection device 520 has a vertical adjustment device 530 and the front and rear control device 540 for adjusting the injection height to adjust the injection position according to the size of the inner tube (1000). Equipped. At this time, the heat insulator 1300 uses a rigid urethane foam. Rigid urethane foam can be used from high temperature of 150 ℃ to cryogenic (about 235 ℃). In addition, the thermal conductivity is low in the heat insulating material 1300, and spray injection is possible.

In addition, the spray coating apparatus 500 according to the present invention is further provided with a molding machine 530 for trimming the surface of the heat insulating material 1300 after spraying the heat insulating material 1300. The molding machine 530 smoothes the surface of the heat insulating material layer 1300 by applying pressure to the heat insulating material layer 1300, and preferably uses a circular touch roller.

As shown in FIG. 3, the adhesive film supply device 600 according to the present invention improves adhesiveness and waterproofness so that the heat insulating material 1300 layer can be smoothly adhered to the inner tube 1000, and the heat insulating material 1300. It is a device for supplying a film-shaped adhesive film 1400 to smoothly apply the waterproofing material to the outer surface of the layer. The adhesive film supply device 600 supplies the adhesive film 1400 to the waterproof coating outer surface so that the adhesive film 1400 may be wound in a band shape according to the rotation pitch of the inner tube 1000. One side of the adhesive film supply device 600 is provided with an angle adjusting device 610 for adjusting the angle of the adhesive film supply device 600 to correspond to the rotation pitch of the inner tube (1000). In addition, a tension device 620 is provided at one side of the supply path of the adhesive film 1400 supplied from the adhesive film supply device 600 to provide a rotational tension so that the adhesive film 1400 does not fall. As the adhesive film 1400, it is preferable to use an adhesive film 1400 that can be melted at a low temperature.

Figure 4 shows a front view of the waterproof material extruder according to the present invention, Figure 5 shows a detailed view of the waterproof material extruder according to the present invention. 4 and 5, the waterproof material extruder 700 according to the present invention is a waterproof adhesive extruder 710 and a waterproof resin 1600 supplying an adhesive for adhering the waterproof resin 1600 to the waterproof coating outer surface. It is made of a waterproof resin extruder 720 to supply. Here, the waterproof adhesive extruder 710 is a device for supplying the waterproof adhesive 1500 to the outer surface of the waterproofing material in the form of a semi-molten state when dissolving after melting the waterproof adhesive 1500 to 150 ℃ to 240 ℃. The waterproof adhesive extruder 710 uses a T-die method, and can be rotated according to the size of the inner tube 1000. As the waterproof adhesive 1500, it is preferable to use a PE adhesive (adhesive modified polyethylene) or an adhesive. The adhesive layer formed by the waterproof adhesive 1500 is preferably formed to 0.1mm to 3mm. If the waterproof adhesive 1500 is applied to less than 0.1mm, there is a problem that the supply of the waterproof adhesive 1500 is not smooth. If the thickness exceeds 3mm, the thickness of the heat insulating tube 2000 becomes thick, and the manufacturing cost increases. There is a problem.

The waterproof resin extruder 720 according to the present invention has a shape of a semi-molten fabric when the waterproof resin 1600 is melted at 150 ° C. to 270 ° C., preferably 200 ° C. to 230 ° C., after melting the waterproof resin 1600. The waterproof resin 1600 is applied to the surface of the waterproof adhesive 1500. Such a waterproof resin extruder 720 uses a T-die method, and can be rotated according to the size of the inner tube 1000. The waterproof resin 1600 supplied from the waterproof resin extruder 720 is coated with a predetermined pitch on the outer side of the inner tube 1000. At this time, the waterproof waterproof resin 1600 may be coated so as to overlap a predetermined interval. In this case, the waterproof resin 1600 may use high density polyethylene (HDPE).

The waterproof adhesive 1500 and the waterproof resin 1600 supplied from the waterproof adhesive extruder 710 and the waterproof resin extruder 720, respectively, have a width of 400 mm to 1,000 mm in the use mode of the heat insulating tube 2000, and It can be adjusted according to the operating temperature.

6 shows a front view of the cooling apparatus according to the present invention. As shown in FIG. 6, the cooling device 800 according to the present invention cools the heat insulating tube 2000 including the sensing line 1100, the heat insulator 1300, and the waterproofing material on the outer surface of the inner tube 1000. It is a device for. The cooling device 800 may be a water-cooled cooling device 800 for cooling the heat insulating tube 2000 using water. However, if necessary, depending on the usage and installation environment of the heat pipe manufacturing apparatus 10, an air-cooled cooling device 800 using air instead of water may be used. The cooling device 800 may cool the heat insulating tube 2000 while maintaining the curing temperature at 40 ° C to 50 ° C.

Figure 7 shows a front view of the tube end treatment apparatus according to the present invention. Tube end treatment apparatus 900 according to the present invention, as shown in Figure 7, is a device for cutting or trimming both ends of the cooled and completed thermal insulation tube 2000 according to the installation method and usage. The tube end treatment device 900 may include an automatic cutting device 910 for precisely processing the resin of the heat insulating tube 2000.

< Insulation  Manufacturing Method>

8 is a flowchart illustrating a method of manufacturing a heat insulation tube according to the present invention in sequence. As shown in FIG. 8, first, the inner tube 1000 is transferred to the thermal insulation tube manufacturing apparatus 10 and then introduced (S100). At this time, the inner tube 1000 may be transported while rotating at a constant speed to have a predetermined rotation pitch. The conveying means such as the conveyor 100 for conveying the inner tube 1000 adjusts the width according to the thickness of the inner tube 1000, and adjusts the rotation pitch and rotation speed of the inner tube 1000 to be conveyed. The thickness of the inner tube 1000 is varied in the size of the outer diameter of 15mm to 3,000mm depending on the use of the thermal insulation tube 2000.

Figure 9 shows a flow chart showing in detail the second step of the method of manufacturing a thermal insulation tube according to the present invention. Next, the inner tube 1000 is pretreated in order to smoothly apply the insulation and waterproofing material to the inner tube 1000 (S200). As shown in Figure 9, in order to remove the rust on the outer surface of the inner tube 1000 to increase the surface temperature of the inner tube 1000 to 40 ℃ to 70 ℃ to remove the moisture of the inner tube (1000) (S210). Next, the scale like the oxide layer formed on the surface of the inner tube 1000 is removed using the shorter 320 (S220). Next, the dust generated while removing the scale (S230). At this time, the dust is removed using a steam cleaner 331, and the oil and water are removed using the moisture remover 332. Next, the inner tube 1000 is preheated to a predetermined temperature so that the heat insulating material may be smoothly coated on the outer surface of the inner tube 1000 (S240). At this time, the preheating temperature preheats the surface of the inner tube 1000 to 50 ° C to 60 ° C. At this time, the preheating temperature can be changed according to the type of insulation.

Next, the sensing line 1100 and the bare copper wire are wound around the outer circumferential surface of the inner tube 1000 to detect and keep leaks of the inner tube 1000 on the outer circumferential surface of the preheated inner tube 1000 (S300). The sensing line 1100 and the bare copper wire adjust the supply angle so as to correspond to the rotation pitch of the inner pipe 1000 in the sensing wire wrapping device 400 winding the sensing wire 1100 and the bare copper wire in a drum manner. Supply to the outer circumferential surface.

Figure 10 shows a flow chart showing in detail the fourth step of the method of manufacturing a thermal insulation tube according to the present invention. Next, using a plurality of spray apparatus by spraying the insulating material on the outer surface of the inner tube 1000 wound around the sensing line 1100 and the bare wire (S400). As shown in FIG. 10, first, vermiculite 1200 having a porous and good absorption capacity is sprayed on the outer surface of the inner tube 1000 on which the sensing line 1100 and the bare copper wire are wound by using a spray device. Coating (S410). Next, the hard polyurethane which is a waterproof material is coated on the vermiculite (1200) coating outer surface using a spray device (S420). Rigid polyurethanes have low thermal conductivity and can be used at both high and low temperatures, resulting in excellent thermal insulation. The vermiculite 1200 and the heat insulating material 1300 may adjust the thickness of the heat insulating material 1300 by adjusting the number of spray guns and the injection discharge pressure. Discharge pressure of the spray device is preferably sprayed at a pressure of 120bar to 140bar. Next, the outer surface of the heat insulating material coating is formed flat using a pressing device such as a circular roller (S430). If the outer surface of the insulation coating is not flat, since the coating of the waterproofing material, which is a subsequent work, is not performed smoothly, a molding operation is necessary to flatten the surface of the insulation after coating the insulation.

Next, in order to improve the adhesion and insulation of the vermiculite 1200 and the thermal insulation coated on the outer circumferential surface of the inner tube 1000, the adhesive film is wound on the outer circumferential surface of the thermal insulation coating (S430). Since the adhesive film 1400 uses a thin adhesive film 1400 that can be melted even at low temperatures, the adhesive film 1400 is naturally melted while being wound in a tube preheated to a predetermined temperature, thereby improving the insulation and adhesion of the vermiculite 1200 and the thermal insulation material. Let's do it.

Figure 11 shows a flow chart showing in detail the fifth step of the warming and manufacturing method according to the present invention. Next, the waterproofing material is applied to the outer surface of the thermal insulation coating coated on the outer circumferential surface of the inner tube 1000 by using a T-die method (S500). As shown in FIG. 11, the waterproofing material applying operation is divided into a step of applying an adhesive and a waterproofing material for smoothly adhering the waterproofing material. First, by extruding the waterproof adhesive 1500 on the outer surface of the heat insulating material coated on the inner tube 1000 by using a T-die method (S510). Here, the waterproof adhesive 1500 is preferably a PE adhesive (adhesive modified polyethylene) or an adhesive. The waterproof adhesive 1500 is melted at 150 ° C. to 240 ° C. in the waterproof adhesive extruder 710, and then supplied in a semi-molten fabric shape, and the waterproof adhesive 1500 supplied in the fabric shape is an outer surface of the coated insulation. It is supplied to wind up at a predetermined pitch.

Next, a heat insulating tube 2000 is manufactured by extruding and molding a waterproof resin 1600 such as high density polyethylene by using a T-die method (S520). In this case, the waterproof resin 1600 is melted at 150 ° C. to 270 ° C. in the waterproof resin extruder 720 and then supplied in a semi-molten fabric shape, and the waterproof resin 1600 supplied in the fabric shape is extruded in a previous work. The outer surface of the waterproof adhesive 1500 is supplied to be wound at a predetermined pitch. At this time, the supplied waterproof resin 1600 is supplied so as to overlap by 50mm to 100mm so that no gap is generated.

In the above-described waterproofing material extrusion step (S500) it can be rotated in order to change the extrusion position according to the thickness of the inner tube 1000 is injected.

Next, the insulating tube 2000 is put into the cooling device 800 and cooled to a predetermined temperature (S600). In this case, the cooling device 800 cools the surface of the heat insulating tube 2000 to 40 ° C. to 50 ° C. using water or air.

Next, the tube to remove the resin and the like at both ends of the heat insulating tube 2000 according to the usage and installation method of the heat insulating tube 2000 by transferring the cooled heat insulating tube 2000 to a tube end treatment device such as an automatic cutting machine. The end treatment operation to finish the manufacture of the thermal insulation tube (2000) (S700).

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention, and therefore, the present invention is limited only to the matters described in the drawings. It should not be interpreted.

1 is a schematic view schematically showing the overall configuration of the thermal insulation pipe manufacturing apparatus according to the present invention,

2 is a plan view of a driving roller according to the present invention;

3 is a detailed view of the spray coating apparatus and the adhesive film supply apparatus according to the present invention,

4 is a front view of the waterproof material extruder according to the present invention,

5 is a detailed view of a waterproof material extruder according to the present invention,

6 is a front view of a cooling apparatus according to the present invention,

7 is a front view of the tube end treatment apparatus according to the present invention,

8 is a flow chart sequentially showing a manufacturing method according to the invention,

9 is a flow chart showing in detail the second step of the manufacturing method according to the invention,

10 is a flow chart showing in detail the fourth step of the method of manufacturing a thermal insulation tube according to the present invention;

11 is a flow chart showing in detail the fifth step of the insulation and manufacturing method according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: insulation tube manufacturing apparatus 100: conveyor

200: driving roller 210: driving motor

220: tilt control unit 300: pretreatment device

310: tube drying device 320: external shot machine

330: Air device 331: Steam cleaner

332: moisture remover 340: preheater

400: sensing line wrapping device 500: spray coating device

510: vermiculite injector 520: insulator injector

530: up and down control device 540: front and rear control device

530: molding machine 600: adhesive film supply device

610: angle adjusting device 620: tensioner

700: waterproof material extruder 710: waterproof adhesive extruder

720: waterproof resin extruder 800: chiller

900: tube end treatment device 910: automatic cutting device

1000: inner tube 1100: sensing line

1200: vermiculite 1300: insulation

1400: adhesive film 1500: waterproof adhesive

1600: waterproof resin 2000: heat insulation tube

Claims (30)

A conveyor 100 for transporting the inner tube 1000; A plurality of driving rollers 200 provided at one side of the conveyor 100 to transmit a rotational force for transporting the inner tube 1000; A pretreatment device 300 in which a pretreatment operation is performed to wash and apply an insulation 1300 to an outer surface of the inner tube 1000 which is provided at one end of the conveyor 100 and inserted; A spray coating device (500) for spraying and applying an insulating material (1300) to the outer circumferential surface of the inner tube (1000) in which the pretreatment operation is performed by the pretreatment device (300); Waterproof material extruder 700 which can be rotated to correspond to the size of the inner tube 1000 on the outer circumferential surface of the inner tube 1000, the coating of the heat insulating material 1300, and extruding the waterproof material in the shape of a fabric using a T-die method. ); And And a cooling device 800 for cooling the thermal insulation tube 2000 in which the insulation 1300 and the waterproofing material are formed. Between the pretreatment device 300 and the spray coating device 500 to detect the leakage line on the outer circumferential surface of the inner tube (1000) for supplying a leak and the bare wire for the insulation of the inner tube (1000) Sensing line including a sensing line angle adjusting device for adjusting the angle so that the line 1100 and the bare copper wire corresponds to the rotation pitch of the inner tube 1000 and a tension device for transmitting a rotational tension to the sensing line 1100 and the bare copper wire Thermal insulation tube manufacturing apparatus characterized in that it comprises a wrapping device (400). The method of claim 1, Insulation tube manufacturing apparatus, characterized in that the outer diameter of the inner tube (1000) is 15mm to 3,000mm. The method of claim 1, The drive roller 200 is manufactured with a heat insulating tube, characterized in that further provided with a drive motor 210 that can move along the width of the conveyor 100 to adjust the width according to the outer diameter of the inner tube (1000). Device. The method of claim 1, One side of the drive roller 200 is characterized in that the inclination adjustment unit 220 for adjusting the inclination of the drive roller 200 in order to adjust the moving speed and the rotational speed of the inner tube (1000) Insulation tube manufacturing device. The method of claim 4, wherein The inclination adjustment unit 220 adjusts the installation angle of the drive roller 200 from 0 ° to 90 ° in order to adjust the rotation pitch of the drive roller 200 to 10 mm to 500 mm based on the entrance direction of the inner tube 1000. Thermal insulation tube manufacturing apparatus characterized in that adjustable to °. The method of claim 1, The pretreatment device 300, An inner tube drying apparatus 310 for removing moisture from the inner tube 1000 to remove rust on an outer surface of the inner tube 1000; An outer surface shorter 320 for removing a scale formed on the surface of the dried inner tube 1000; An air device 330 for removing dust from the shorted inner tube 1000; And Preheating device for preheating the tube to a predetermined temperature for a smooth coating of the heat insulating material (1300) on the outer circumferential surface of the inner tube (1000); insulation tube manufacturing apparatus comprising at least one or more of. The method of claim 6, The inner tube drying apparatus 310 is a thermal insulation tube manufacturing apparatus, characterized in that the inner tube (1000) is dried by gas or electric method so that the surface temperature is 40 ℃ to 70 ℃. The method of claim 6, The air device 330, Steam cleaner 331 for removing the dust of the inner tube (1000); And Insulation tube manufacturing apparatus comprising a; water removal device (332) for removing the oil and water of the inner tube (1000). The method of claim 6, The preheating device (340) is a thermal insulation tube manufacturing apparatus, characterized in that the induction, preheating at high frequency, electrically heated die or heating tube. The method of claim 9, The preheating device 340 is a heat insulation tube manufacturing apparatus, characterized in that the use power can be adjusted to 0 ~ 1,000㎾ according to the type of the inner tube (1000) or the heat insulating material (1300). delete delete The method of claim 1, The heat insulating material (1300) is a thermal insulation tube manufacturing apparatus, characterized in that the rigid polyurethane is relatively low thermal conductivity than the inner tube (1000). The method of claim 1, The spray coating apparatus 500, Vermiculite spraying apparatus 510 for vermiculite 1200 coating; And Thermal insulation tube manufacturing apparatus comprising a; heat insulating material injection device (520) for coating the heat insulating material (1300) on the outer circumferential surface of the vermiculite (1200) coated inner tube (1000). The method of claim 1, The spray coating apparatus 500 is a thermal insulation pipe manufacturing apparatus, characterized in that for spraying the heat insulating material (1300) at a pressure of 120bar to 140bar. The method of claim 1, The spray coating apparatus 500 is a thermal insulation tube manufacturing apparatus characterized in that it further comprises a molding machine for spraying the insulation (1300) and then smoothly arrange the surface of the insulation (1300) layer. The method of claim 16, The molding machine 530 is a thermal insulation pipe manufacturing apparatus, characterized in that the circular touch roller. The method of claim 1, Between the spray coating device 500 and the waterproofing extruder 700 is further provided with an adhesive film supply device 600 for supplying a film-shaped adhesive film 1400 for improving the waterproofness and adhesion Insulation tube manufacturing apparatus. The method of claim 1, The waterproof material extruder 700, A waterproof adhesive extruder 710 which improves waterproofness and supplies a waterproof adhesive 1500 for smooth adhesion of the waterproofing material; And And a waterproof resin extruder (720) for supplying a waterproof resin (1600) to an upper portion of the waterproof adhesive (1500). The method of claim 1, The cooling device 800 is a heat pipe manufacturing apparatus, characterized in that the water-cooled cooling device (800). The method of claim 1, The cooling device 800 is a thermal insulation tube manufacturing apparatus, characterized in that for cooling the thermal insulation tube (2000) to 40 ℃ to 50 ℃. The method of claim 1, Thermal insulation tube manufacturing apparatus, characterized in that it further comprises a tube end processing device (900) for cutting or trimming both ends of the cooled thermal insulation tube (2000). The method of claim 1, The thermal pitch of the inner tube 1000 is calculated by the following equation. P = outer diameter of inner tube × 3.14 × tan α (P: rotation pitch of inner pipe, α: inclination angle of driving roller) A first step (S100) of transferring the inner tube (1000); A second step (S200) of pretreating the inner tube 1000 before applying the heat insulating material 1300 and the waterproofing material; A third step (S300) of winding a sensing line 1100 and a bare copper wire for leak detection and thermal insulation of the inner tube 1000 on an outer circumferential surface of the inner tube 1000; A fourth step (S400) of spraying the insulating material 1300 on the outer circumferential surface of the inner tube 1000 on which the sensing line 1100 and the bare wire are wound by using a spray device; A fifth step (S500) of applying a waterproof material to the outer circumferential surface of the inner tube (1000) coated with the heat insulating material (1300) using a T-die rotatable to correspond to the outer diameter of the inner tube (1000); And And a sixth step (S600) of cooling the insulation tube (2000) on which the insulation (1300) and the waterproofing member are formed. 6. The method of claim 24, The second step (S200), Step 2-1 (S210) of removing moisture from the inner tube (1000) to remove rust on the outer surface of the inner tube (1000); Step 2-2 (S220) of removing the scale formed on the surface of the dried inner tube (1000); A second to third step (S230) of removing dust generated in the second to second step (S220); And It includes at least one or more of the second to four steps (S240) for preheating the inner tube 1000 to a predetermined temperature so that the heat insulating material (1300) is smoothly coated on the outer surface of the inner tube (1000); Insulation tube manufacturing method characterized in that. The method of claim 24, The fourth step (S400), Step 4-1 (S410) of coating the vermiculite (1200) by spraying the outer periphery of the inner tube (1000) on which the sensing line (1100) is wound; A fourth step (S420) of spraying and coating the heat insulating material 1300 on the outer circumferential surface of the inner tube 1000 coated with the vermiculite 1200; And And a fourth step (S430) of smoothly forming an outer circumferential surface of the inner tube 1000 coated with the vermiculite 1200 and the heat insulator 1300 (S430). The method of claim 26, The fourth step (S400), It further comprises a fourth step (S440) for wrapping the adhesive film 1400 for improving the adhesion and insulation of the vermiculite 1200 and the heat insulating material 1300 coated on the outer peripheral surface of the inner tube (1000). Insulation tube manufacturing method. The method of claim 24, The fifth step (S500), A fifth step (S510) of extruding the waterproof adhesive 1500 using a T-die for smooth adhesion of the waterproofing material to the outer circumferential surface of the inner tube 1000 coated with the heat insulating material 1300; And And a fifth step (S520) of extruding the waterproof resin 1600 on the extruded waterproof adhesive 1500. The method of claim 28, The waterproof adhesive 1500 and the waterproof resin 1600 is a method for producing a thermal insulation tube, characterized in that supplied in semi-molten fabric shape or film shape. The method of claim 24, After the sixth step S600, the insulation tube 2000 is cut to a predetermined length, and both ends of the insulation tube 2000 are cut at both ends of the insulation tube 2000 so that construction is smooth. Thermal insulation tube manufacturing method characterized in that it further comprises a seventh step (S700) to trim.

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