KR20120114546A - Manufacturing method and apparatus for aluminum tube - Google Patents

Abstract

PURPOSE: An aluminum tube manufacturing method and a manufacturing machine using the same are provided to lay an aluminum tube straightly for coating the surface of the tube with adhesive evenly. CONSTITUTION: An aluminum tube manufacturing method is as follows. An aluminum tube supplied by aluminum tube supplying units(100, 200) is laid straightly before being cleaned. The laid aluminum tube is shaped cylindrically. The aluminum tube is heated before resin-coated and a cooling process, a dry process, and a drawing process are applied to the tube successively.

Description

 MANUFACTURING METHOD AND APPARATUS FOR ALUMINUM TUBE}

The present invention relates to a method for producing an aluminum tube and a manufacturing apparatus thereof, which are used for applications such as refrigerant pipes, hydraulic pipes and other fuel pipes by coating a resin stably, firmly and uniformly on the outer surface of an aluminum tube or an aluminum alloy tube.

In general, the use of the resin-coated aluminum tube is an air conditioner line to move the refrigerant, a fuel line to transfer the fuel, a power steering line (hydraulic oil) and a brake line (hydraulic oil) is transferred.

Conventional manufacturing method of the conventional aluminum tube used for the above purposes, that is, Patent No. 10-887710, Supply step of supplying the aluminum tube; A high frequency preheating step of preheating the aluminum tube at a high frequency; An adhesive coating step of applying the surface of the preheated aluminum tube with an adhesive in a gel state; Resin coating step of coating with a resin on the aluminum tube coated with the adhesive; And, the peeling step of peeling off the resin coating portion of the aluminum tube with a laser cutter.

In addition, the adhesive coating step and the coating step is carried out continuously in one mold housing, the adhesive coating step is the adhesive is applied to the surface of the aluminum tube as the aluminum tube passes through the mold housing, A washing step of washing the surface of the aluminum tube before the preheating step is further included.

In the manufacturing method of the conventional aluminum tube having the configuration as described above, when the aluminum tube is supplied, the aluminum tube is unwound while being supplied to the winding drum, so that the adhesive is not straightened due to the elasticity of the aluminum. Since the coating is made and the resin is coated, there is a problem that the unsafe adhesive coating and the resin coating are made.

In addition, the manufacturing method of the conventional aluminum tube can not maintain the shape of the circle because the aluminum tube is mutually pressed when the winding coil is wound to maintain the shape of the ellipse, when the adhesive is applied in the elliptical state and the resin is coated, the finished product Not only does it maintain this roundness, but the adhesive is not evenly applied to the outer surface of the aluminum tube, and the resin also cannot be uniformly coated on the outer surface of the aluminum tube.

In addition, the manufacturing method of the aluminum tube is coated on the surface of the aluminum tube in the form of a mixture of adhesive and resin because the adhesive coating and resin coating is made in a single mold housing is cracked and cracked after the coated portion is cured There is a problem.

The present invention has been invented to solve this problem in view of the above problems, the object of which is to straighten the aluminum tube to be supplied and released from the winding drum, and to apply the adhesive coating by forming the straightened elliptical aluminum tube to the origin An object of the present invention is to provide an aluminum tube manufacturing method and apparatus for producing a uniform and stable resin coating.

Aluminum tube manufacturing method according to the present invention for achieving the above object is to wash the aluminum tube supplied from the aluminum tube supply means, preheat the washed aluminum tube and then applying an adhesive to the outer surface of the preheated aluminum tube In the aluminum tube manufacturing method consisting of a step of resin coating thereafter,

A straightening process for straightening the aluminum tube supplied from the aluminum tube supply means before washing the aluminum tube, and a rounding process for forming the straightened aluminum tube into a round shape are further formed, and heating the aluminum tube before the resin coating. A heating step is added, and after the resin coating, a cooling step, a drying step, and a drawing step are further formed.

And the heating process is divided into a step of preheating the aluminum tube hot air to 180-210 ℃ and a step of heating the hot air preheated aluminum tube to 230 ℃ or less, the method of heating the aluminum tube to 230 ℃ or less Either or both of direct heating or high frequency heating are sequentially performed, and the adhesive coating method is provided with an adhesive inside an adhesive coating means surrounding the outside of an aluminum tube, and the aluminum tube is passed through the supplied adhesive. Automatically and uniformly applied to the outer surface of the tube, the cooling process is water cooling using cooling water, the drying process is hot air drying using hot air.

In addition, the aluminum tube manufacturing apparatus of the present invention comprises: aluminum tube supply means for unwinding and supplying aluminum from the winding drum in which the aluminum tube is wound; Aluminum tube straightening means for straightening the aluminum tube supplied from the aluminum tube supply means to be straight; Aluminum tube rounding means for supporting an aluminum tube discharged from said aluminum tube straightening means; Aluminum tube washing means for washing impurities deposited on the aluminum tube discharged from the aluminum tube oscillating means; Aluminum tube preheating means for preheating the aluminum tube discharged from the aluminum tube washing means; Adhesive applying means for applying an adhesive to an outer surface of the aluminum tube discharged from the aluminum tube preheating means; Aluminum tube heating means for heating the aluminum tube discharged from the adhesive applying means; Resin coating means for coating a resin on the outside of the aluminum tube discharged from the aluminum tube heating means; It comprises a cooling means for cooling the aluminum tube discharged from the resin coating means, a drying means for drying the cooled aluminum tube and a withdrawal means for withdrawing the dried tube.

In addition, the aluminum tube straightening means has a plurality of lower guide wheels are installed at regular intervals along the advancing direction of the aluminum tube on one side lower portion of the main body, and the upper and lower heights of the lower guide wheels are adjusted by clearance adjustment means. A plurality of upper guide wheels that cushion shocks are installed at regular intervals to press and guide the upper and lower portions of the aluminum tube, and a plurality of first linear means along the traveling direction of the aluminum tube to both sides of the primary linear means. The side guide wheels are installed at regular intervals, and the guide wheel located on one side of the side guide wheels is configured as a secondary linear means provided with a clearance control means for controlling side clearance and cushioning shock.

In addition, the aluminum tube rounding means is provided with a ring having an inner diameter of a round shape close to the outer diameter of the aluminum tube, a jig means for supporting the ring is provided at the bottom of the ring, the adhesive coating means is a bearing on the inner peripheral surface An installed bearing block is provided, and bushings each having an inner diameter larger than the outer diameter of the aluminum tube by an adhesive coating thickness are installed at the inlet and the outlet of the bearing block, and each of the bushings and the bearing block is embedded in a protective case, and the protective case. And one side of the bearing block is formed with an adhesive supply passage in communication with each other so that the adhesive supplied from the adhesive supply device is supplied.

The aluminum tube heating means includes a preheating part for preheating the aluminum tube to 180-210 ° C., and a heating part for heating the aluminum tube preheated by the preheating part to 230 ° C. or less, and the aluminum tube to 230 ° C. or less. The heating unit to be heated so that any one or both of the direct heating unit or the high frequency heating unit to be heated by the heat generated from the heating line is provided in sequence.

In addition, the drying means is a hot air blower, the withdrawal means is installed on each of the upper and lower drive wheels and the upper and lower children wheels driven by the power of the drive motor on the upper and lower sides of the main body is installed drive motor, An elastic belt is connected between the upper driving wheel and the upper idle wheel and the lower driving wheel and the lower idle wheel.

The aluminum tube manufacturing method of the present invention and the manufacturing apparatus as described above are to straighten the aluminum tube supplied from the aluminum tube supply means, and to form the elliptical aluminum tube in a circle to uniform the adhesive on the outer surface of the aluminum tube. As well as constant coating in one thickness, there is an effect to increase the productivity at the same time as the resin coating is constantly coated without biasing to any one side.

1 is a process chart illustrating a method for manufacturing an aluminum tube of the present invention;
2 is a schematic diagram illustrating an aluminum tube manufacturing apparatus of the present invention;
Figure 3 is an excerpt of the aluminum tube straightening means of the present invention,
Figure 4 is an extract of the aluminum tube rounding means of the present invention,
Figure 5 is an extract of the adhesive coating means of the present invention,
Figure 6 is an excerpt of the aluminum tube heating means of the present invention,
Figure 7 is an extract of the aluminum tube extraction means of the present invention.

Hereinafter, the aluminum tube manufacturing method of the present invention and a manufacturing apparatus thereof will be described in detail with reference to the accompanying drawings.

First, as shown in Figures 1 and 2, the aluminum tube manufacturing apparatus of the present invention is provided with an aluminum tube supply means 100 for unwinding and supplying an aluminum tube from a winding drum (not shown) in which the aluminum tube is wound. An aluminum tube straightening means 200 is installed to straighten the aluminum tube AL supplied from the tube supply means 100 to be straight.

The reason for installing the aluminum tube straightening means 200 is, because the aluminum tube is supplied while being unwound in a wound drum, the adhesive is applied and the resin coating is made in a state in which the aluminum tube is not straightened due to the elastic characteristics of aluminum. Because of the irregular adhesive coating and resin coating is made to prevent it.

Meanwhile, in the exemplary embodiment of the aluminum tube straightening means 200, as shown in FIG. 3, a plurality of lower guide wheels 220 are fixed along a traveling direction of the aluminum tube AL at one lower side of the main body 210. Installed at intervals, the upper and lower height of the lower guide wheel is adjusted by the clearance adjusting means 240, the plurality of upper guide wheels 230 to cushion the shock is installed at regular intervals, the upper and lower parts of the aluminum tube Primary linear means (A) for guiding and pressing the,

A plurality of side guide wheels 250 are installed at predetermined intervals along the advancing direction of the aluminum tube to both front sides of the first linear means A, and the side guide wheels have side clearances adjusted and cushioned to cushion shocks. It consists of secondary linear means (B) provided with means (260).

When the aluminum tube passes through the plurality of lower guide wheels 220 and the upper guide wheel 230 which are the first linear means A of the present invention having the above configuration, the upper / lower guide wheels are formed on the upper and lower portions of the aluminum tube. Since the upper and lower linearization of the aluminum tube is performed by pressing the lower portion, and then the aluminum tube passes between the plurality of side guide wheels 250, which are the second linear means B, the side guide wheel is made of aluminum. Both sides of the aluminum tube are straightened because the sides of the tube are pushed forward.

Meanwhile, each of the clearance adjusting means 240.260 is installed on the upper guide wheel 230 and the guide wheel 250 on one side to adjust the distance between the upper / lower guide wheels and the distance between the both side guide wheels, and at the same time, provide impact. Buffer. However, the shock buffer is made by the elastic member 270.

When the straightening of the aluminum tube is completed as described above, the aluminum tube is rounded using the aluminum tube rounding means 300. The reason for this is that the aluminum tube is pressed against each other to be wound on the winding drum. If you apply the adhesive in the elliptical state and coat the resin in the elliptical state, the finished product does not maintain the circle, and the adhesive is not evenly applied to the outer surface of the aluminum tube, and the resin also This is to prevent it by coating unevenly on the outer surface of the aluminum tube unevenly coated to one side.

If the adhesive or resin is not uniformly coated on the outer surface of the aluminum tube and is coated unevenly on either side, the unevenly coated part is thickened after curing, causing cracks or cracks on the part. It is essential that the outer surface of the aluminum tube is uniformly coated. Therefore, in order to achieve the above object, the present invention provides an aluminum tube straightening means 200 and an aluminum tube oscillating means 300.

On the other hand, the aluminum tube rounding means 300 of the embodiment of the present invention is provided with a ring 310 having an inner diameter of a round shape close to the outer diameter of the aluminum tube as shown in FIG. 4, and a ring below the ring. The jig means 320 for supporting the 310 is installed.

When the elliptical aluminum tube passes through the ring 310 having the above configuration, the aluminum tube passed through is formed in the same shape as the inner diameter of the ring 310.

As described above, when the aluminum tube is formed into a round shape, the oil and foreign substances buried in the aluminum tube are then washed by using the aluminum tube washing means (C1). The cleaning method includes the aluminum tube while the aluminum tube passes through the tub containing the cleaning liquid. Oil and debris on the body will be cleaned automatically. The cleaning method of the aluminum tube may be washed in the form of spraying the cleaning liquid on the aluminum tube.

When the cleaning operation is completed, the aluminum tube is then preheated by using the aluminum tube preheating means 400. The reason for this is to dry the cleaning solution and to facilitate the application of the adhesive. However, the preheating temperature is preferably 150-200 ° C. hot air preheating using the hot air blower 410, and if necessary, a method of direct preheating or indirect preheating may be used.

When the preheating operation is completed, the adhesive is applied using the adhesive applying means 500. An embodiment of the adhesive applying means 500 is a bearing block in which a bearing 510 is installed on an inner circumferential surface as shown in FIG. 520 is provided, and the inlet and outlet of the bearing block are each provided with a bush 530 having an inner diameter larger than the outer diameter of the aluminum tube by the adhesive coating thickness, the adhesive supply path 540 is formed in the bearing block The adhesive supplied from the adhesive supply device 550 is supplied to the adhesive supply passage 540.

The method of applying the adhesive to the outer surface of the aluminum tube by using the adhesive coating means 500 having the above configuration is that when the adhesive is supplied from the adhesive supply device 550 to the adhesive supply passage 540, the adhesive supplied is When the aluminum tube proceeds to the inside of the bearing block 520 and the adhesive is filled, the adhesive is applied.

However, in order to uniformly apply the adhesive on the outer surface of the aluminum tube with a uniform thickness, the inlet and the outlet of the bearing block 520 has a bush 530 having an inner diameter larger than the outer diameter of the aluminum tube by an adhesive coating thickness. . The gap between the outer diameter of the aluminum tube and the inner diameter of the bush 530 is preferably within 0.1mm.

When the application of the adhesive is completed, the applied adhesive is dried and the aluminum tube is heated using the aluminum tube heating means 600 to facilitate the coating of the resin made in a later process, the aluminum tube heating means 600 The configuration includes a preheating unit 610 for preheating the aluminum tube to 180-210 ° C., and a heating unit 620 for heating the aluminum tube preheated by the preheating unit to 230 ° C. or less.

The preheating unit 610 is to preheat to dry the adhesive, the heating unit 620 is to facilitate the coating by maintaining a temperature similar to the liquid resin before the resin coating.

The heating unit 620 may be used by sequentially installing any one or both of the direct heating unit or the high frequency heating unit to be heated by the heat generated from the heating line.

When the heating is completed by the aluminum tube heating means 600, the resin is coated using the resin coating means 700. The resin coating means 700 is a conventional resin coating means that is already widely used, Description is omitted.

When the resin is coated by the resin coating means 700 is cooled by the cooling means (H) in order to cure the coated resin, the cooling means (H) is the water of the cooling vessel containing water cooling and cooling water using a sprayer And immersion cooling for cooling by dipping.

Then, after the cooling, the moisture buried while cooling is dried by using the drying means 800, and withdrawn to the drawing means 900 for drawing out the dried tube, and then cut with a cutter.

The withdrawal means 900 has upper and lower driving wheels 910.940 and upper and lower idle wheels 920.950 respectively driven by the driving motor on the upper and lower sides of the main body 970 where the driving motor is installed. It is installed, and each of the elastic belt (930.960) is installed between the upper drive wheel and the upper idle wheel and the lower drive wheel and the lower idle wheel.

The method of withdrawing the dried tube by the withdrawal means (900) is the elastic belt (930.960) in the state in which the dried tube is placed between each of the elastic belt (930.960) under the driving force of the drive motor up / down driving Since the wheel is rotated together with the wheels 910.940 and the upper / lower wheels 920.950, the dried tube is drawn out according to the rotational speed of the elastic belt 930.960.

In addition, the aluminum tube manufacturing method of the present invention comprises the steps of supplying an aluminum tube supplied from the aluminum tube supply means; A straightening process for straightening the aluminum tube supplied from the aluminum tube supply means; A rounding process of forming the straightened aluminum tube into a round shape; Process of washing rounded aluminum tubes; Preheating the washed aluminum tube; Applying an adhesive to an outer surface of the preheated aluminum tube; Heating the aluminum tube to which the adhesive is applied; Coating a resin on an outer surface of the heated aluminum tube; Cooling the coated aluminum tube; Drying the cooled aluminum tube; Comprising a step of taking out the dried aluminum tube.

The process of supplying the aluminum tube is to unwind the aluminum tube from the winding drum and to supply it to the aluminum tube straightening process described in a later step, so that the supplied aluminum tube is straightened using the aluminum tube straightening means 200. Straighten

The reason is that the aluminum tube is supplied while being unwound while being wound on the winding drum. Therefore, since the adhesive is applied and the resin coating is performed while the aluminum tube is not straightened due to the elasticity of the aluminum, irregular adhesive application and resin coating are performed. This is to prevent and securely and uniformly apply the adhesive.

When the aluminum tube is straightened, a rounding process is performed to form the straightened aluminum tube into a round shape, because the aluminum tube is pressed against each other when the aluminum tube is wound on the winding drum, and thus the shape of the ellipse cannot be maintained. When the adhesive is applied in the elliptical state and the resin is coated, the finished product does not maintain the original shape, and the adhesive is not evenly applied to the outer surface of the aluminum tube. This is to prevent the coating by being uniformly coated on either side without being uniformly coated on.

If the adhesive or resin is not uniformly coated on the outer surface of the aluminum tube and is coated unevenly on either side, the unevenly coated part is thickened after curing, causing cracks or cracks on the part. It is essential that the outer surface of the aluminum tube is uniformly coated. Therefore, the present invention is to round the aluminum tube in order to achieve the above object.

In the specific rounding method of the aluminum tube, when an elliptical aluminum tube passes through a ring 310 having an inner diameter of a circle close to the outer diameter of the aluminum tube, the aluminum tube passed therethrough has the same shape as the inner diameter of the ring 310. It is molded.

When the rounding of the aluminum tube is made, a cleaning process is performed to wash the oil or other foreign matter on the rounded aluminum tube. The cleaning method is sprayed with a conventional cleaning liquid for cleaning the oil or other foreign matter. Wash by dipping.

When the washing operation is completed, the hot air blower blows 150-200 ° C. with a hot air blower to dry the washing liquid on the aluminum tube after the washing.

When the cleaning solution is dried as described above, the adhesive is applied to the outer surface of the aluminum tube. The specific adhesive application method includes a bearing block 520 provided with a bearing 510 on an inner circumferential surface thereof, and an entrance of the bearing block. And an outlet bush 530 having an inner diameter larger than the outer diameter of the aluminum tube by an adhesive coating thickness, and an adhesive supply path 540 is formed in the bearing block, so that the adhesive supplied from the adhesive supply device 550 is provided. Supplied.

When the adhesive is supplied from the adhesive supply device 550 to the adhesive supply path 540, the supplied adhesive is filled into the inside of the bearing block 520, and the adhesive is applied when the aluminum tube proceeds to the inside of the filled adhesive. Will be.

However, in order to uniformly apply the adhesive to the outer surface of the aluminum tube with a uniform thickness, the inlet and outlet of the bearing block 520 by installing a bush 530 having an inner diameter larger than the outer diameter of the aluminum tube by the adhesive coating thickness The adhesive is evenly applied to the outside of the aluminum tube exiting the bush.

Meanwhile, the gap between the outer diameter of the aluminum tube and the inner diameter of the bush 530 is less than 0.1 mm, so that the thickness of the adhesive applied to the outer surface of the aluminum tube is less than 0.1 mm.

When the application of the adhesive is completed, the adhesive is applied to the aluminum tube is heated, the heating method is first preheating the preheating unit 610 for preheating the aluminum tube to 180-210 ℃, and the aluminum tube preheated by the preheater 230 It is divided into a heating unit 620 which is heated to be C or less.

The preheating unit 610 is to dry with hot air to dry the adhesive, the heating unit 620 is heated to maintain the temperature similar to the liquid resin before the resin coating to facilitate the coating, the bar The heating unit 620 sequentially installs and heats either one or both of a direct heating unit or a high frequency heating unit that is heated by heat generated by a heating line.

When the heating is completed, the resin is coated on the outer surface of the aluminum tube in order to protect the aluminum tube and extend its service life.

When the resin is coated, it is water cooled to rapidly cure it, and after the cooling, the air is dried in order to dry the moisture on the surface of the resin while cooling, and the hot air drying temperature may be a temperature at which the resin does not melt.

The dried aluminum tube is drawn out using a drawing means, and the reason for the drawing is to adjust the manufacturing speed of the aluminum tube to produce and produce a high quality aluminum tube. When all of the above processes are completed, the aluminum tube may be cut to a certain length.

The aluminum tube manufacturing method and the manufacturing apparatus of the present invention as described above is to straighten the aluminum tube to be supplied from the winding drum, and to shape the straightened elliptical aluminum tube to the round shape to uniformly apply the adhesive Resin coating is made uniform and stable, there is an advantage that can produce and produce high-quality aluminum tube.

100: aluminum tube supply means 200: aluminum tube supply means
210: main body 220: lower guide wheel
230: upper guide wheel 240: clearance adjustment means
250: side guide wheel 260: play control means
270: elastic member 300: aluminum tube rounding means
310 ring 320 jig means
400: aluminum tube preheating means 500: adhesive coating means
510: bearing 520: bearing block
530: bush 540: protective case
550: adhesive supply path 560: adhesive supply device
600: aluminum tube heating means 610: preheating unit
620: heating part 700: resin coating means
800: drying means 900: drawing means
910.940: Upper / Lower Driving Wheel 920.950: Upper / Lower Children Wheel
930.960: elastic belt 970: main body

Claims (13)

In the aluminum tube manufacturing method comprising the steps of washing the aluminum tube supplied from the aluminum tube supply means, preheating the washed aluminum tube, and then applying an adhesive to the outer surface of the preheated aluminum tube, and then resin coating. ,
A straightening process for straightening the aluminum tube supplied from the aluminum tube supply means before washing the aluminum tube, and a rounding process for forming the straightened aluminum tube into a round shape are further formed, and heating the aluminum tube before the resin coating. A heating process is added, and after the resin coating, a cooling process, a drying process and a withdrawal process are further formed. The method of claim 1, wherein the heating process is divided into a process of preheating the aluminum tube to 180-210 ° C. and a step of heating the aluminum tube to be 230 ° C. or less. The method of claim 2, wherein the method for heating the aluminum tube to be 230 ° C or less, any one or both of direct heating or high frequency heating is made of aluminum tube manufacturing method sequentially.
The method of claim 1, wherein the adhesive coating method is an adhesive is supplied to the inside of the adhesive coating means surrounding the outside of the aluminum tube, it is to be automatically uniformly applied to the outer surface of the aluminum tube as the aluminum tube passes through the supplied adhesive. Aluminum tube manufacturing method characterized in that. The method of claim 1, wherein the cooling step is water cooling using cooling water, and the drying step is hot air drying using hot air. An aluminum tube supply means (100) for unloading and supplying aluminum from the winding drum in which the aluminum tube is wound;
Aluminum tube straightening means (200) for straightening the aluminum tube supplied from the aluminum tube supply means to be straight;
Aluminum tube rounding means (300) for supporting the aluminum tube discharged from the aluminum tube straightening means;
Aluminum tube washing means (C1) for washing impurities impurity on the aluminum tube discharged from the aluminum tube oscillating means;
Aluminum tube preheating means (400) for preheating the aluminum tube discharged from the aluminum tube washing means;
Adhesive coating means 500 for applying an adhesive to the outer surface of the aluminum tube discharged from the aluminum tube preheating means
Aluminum tube heating means 600 for heating the aluminum tube discharged from the adhesive coating means;
Resin coating means 700 for coating a resin on the outside of the aluminum tube discharged from the aluminum tube heating means;
Aluminum comprising a cooling means (H) for cooling the aluminum tube discharged from the resin coating means, a drying means 800 for drying the cooled aluminum tube and a withdrawal means (900) for drawing out the dried tube. Tube manufacturing equipment. According to claim 6, The aluminum tube straightening means 200 is provided with a plurality of lower guide wheels 220 at regular intervals along the traveling direction of the aluminum tube (Al) on the lower side of the main body 210, The upper and lower height of the lower guide wheel is adjusted by the clearance adjustment means 240 and a plurality of upper guide wheels 230 to cushion the shock is installed at a predetermined interval to press and guide the upper and lower parts of the aluminum tube. A plurality of side guide wheels 250 are provided at regular intervals along the traveling direction of the aluminum tube on both sides of the vehicle linear means A and the front straight sides of the primary linear means. The aluminum tube manufacturing apparatus, characterized in that the side clearance is adjusted and consists of a secondary linear means (B) is provided with a clearance adjustment means 260 to cushion the impact. The method of claim 6, wherein the aluminum tube rounding means 300 is provided with a ring 310 having an inner diameter of a circle close to the outer diameter of the aluminum tube, jig means 320 for supporting the ring below the ring Aluminum tube manufacturing apparatus characterized in that the installation. According to claim 6, The adhesive coating means 500 is provided with a bearing block 520 is provided with a bearing 510 on the inner circumferential surface, the inlet and outlet of the bearing block is larger than the outer diameter of the aluminum tube by the adhesive coating thickness Bushes 530 having inner diameters are respectively installed, and each of the bushings and the bearing blocks is embedded in the protective case 540, and one side of the protective case and the bearing block is supplied with the adhesive supplied from the adhesive supply device 560. Aluminum tube manufacturing apparatus, characterized in that the adhesive supply passage 550 is formed in communication with each other. According to claim 6, The aluminum tube heating means 600 is a preheating unit 610 for preheating the aluminum tube to 180-210 ° C and heating for heating the aluminum tube preheated by the preheating portion to 230 ° C or less Aluminum tube manufacturing apparatus, characterized in that consisting of a portion (620). The heating unit 620 for heating the aluminum tube to be 230 ° C. or lower is any one or two of the direct heating unit 620a or the high frequency heating unit 620b for heating by heat generated from a heating line. Aluminum tube manufacturing apparatus, characterized in that all installed sequentially. 7. The aluminum tube manufacturing apparatus according to claim 6, wherein the drying means is a hot air blower. The upper and lower driving wheels (910.940) and the upper and lower parts of claim 6, wherein the drawing means (900) is driven by the power of the driving motor on the upper and lower sides of the main body (970) on which the driving motor is installed. An idle wheel (920.950) is installed, the aluminum tube manufacturing apparatus, characterized in that the elastic belt (930.960) is installed between the upper drive wheel and the upper idle wheel and the lower drive wheel and the lower idle wheel.

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