KR100613010B1 - Tube insertion hole boring apparatus and the boring method of header pipe for regenerator - Google Patents

Abstract

The present invention can improve the productivity by automatically drilling the tube insertion hole in the header pipe formed of semi-circular aluminum to reduce the cost, and also to prevent the header pipe from being crushed during the drilling of the tube insertion hole to eliminate product defects. The present invention relates to a tube insertion hole drilling apparatus for a heat exchanger header pipe and a method for drilling the same.

The fabric mill of the present invention has a lower mold 10 having an injection groove 11 into which the header pipe 1 is fitted; An upper mold 20 disposed above the lower mold 10 to move up and down through the press P; A punch 30 arranged in the upper die 20 to drill the tube insertion hole 2; A pair of cores 40 provided with punch grooves 41 into and out of the header pipe 1 from both sides; A pair of removal pins 50 for removing the scrap 3 while being introduced and discharged into the punch grooves 41 of the both side cores 40; A discharge bar 60 installed in the injection groove 11 to discharge the punched header pipe 1 upward; A pair of air dischargers 80 for discharging the discharged header pipe 1 to the discharge guide plate 70; Cylinders C1, C2 and C3 for operating the core 40, the removal pin 50, and the discharge bar 60, respectively; Sensors (S1) (S2) for sensing the input and discharge states of both cores 40, respectively; And a controller 90 that automatically controls their operation sequentially.

       Header pipe, tube insertion hole, heat exchanger, drilling device, drilling method

Description

Tube insertion hole boring apparatus and the boring method of header pipe for regenerator}

1 to 14 show the fabric factory of the present invention,

1 is a front view showing the overall structure of the present invention.

Figures 2a, 2b, 2c is a front view, a side view and a plan view extracting the main parts of the present invention.

3 is a perspective view of FIG. 2C;

4 is a front sectional view of FIG. 2C;

Figure 5a, 5b is a cross-sectional view showing the lower mold and the discharge bar.

6 is a cross-sectional view showing a core and a removal pin.

Figures 7a, 7b is a bottom perspective view and a bottom and side cross-sectional view showing the upper mold and punch.

8A and 8B are plan views showing the input state of the header pipe and the core;

9a, 9b and 9c are side cross-sectional views showing the operating state of the punch and the discharge bar;

10A, 10B, and 10C are plan views showing operating states of the core, the removal pins, and the air ejector;

11a and 11b are a perspective view and a front view showing the structure of the core.

12a and 12b are a perspective view and a cross-sectional view of the header pipe showing a state in which the tube insertion hole is punched by the present invention.

13 is an operation state of the punch.

14 is an operation state of the removal pin.

15 is a process chart showing the drilling method of the present invention.

<Code Description of Main Parts of Drawing>

1: header pipe 2: tube insertion hole

3: scrap 10: lower mold

11: Input groove 20: Pictograph

30: Punch 40: Core

41: punch groove 50: removal pin

60: discharge bar 61: slider

62: spring 70: discharge guide

80: air discharger 90: controller

P: Press C1, C2, C3: Cylinder

S1, S2: Sensor

The present invention relates to a header pipe for a heat exchanger, and more particularly, to automatically drill a tube insertion hole in a header pipe formed of semi-circular aluminum to improve productivity while reducing costs, and The present invention relates to a tube insertion hole punching device for heat exchanger header pipes and to a method for drilling the same, which prevents the distortion of the header pipe during the drilling to eliminate product defects.

In general, a condenser of a heat exchanger used as an air conditioner forms a plurality of tube insertion holes at appropriate intervals in a header pipe, couples a refrigerant flow tube to the tube insertion hole of the header pipe, and radiates heat between the tubes. Install the heat sink fins.

This heat exchanger header pipe connects two pipes with a plurality of tubes and is one of the representative air conditioning products today. In this case, the header pipe is made of aluminum.

On the other hand, in forming a plurality of tube insertion holes at appropriate intervals in the heat exchanger header pipe, when the tube insertion hole is drilled by using a direct press on the header pipe formed of aluminum pipe, the header pipe is formed by the pressure of the press. Since it is easily crushed, there was a technical problem that the punching operation using the press is very difficult to drill the tube insertion hole.

Therefore, conventionally, after drilling a tube insertion hole in an aluminum plate using a press in a state in which the aluminum plate is cut to an appropriate size, the aluminum plate is rolled in a round shape and airtightly joined at both ends by welding to form a heat exchanger header pipe. Prepared.

However, the conventional method for manufacturing the header pipe has a problem in that the productivity is very low due to the complicated and difficult work process. In particular, since both ends of the aluminum sheet are rolled and welded together, the joint is connected by torsional stress or pressure directly applied to the joint. There was a problem that a lot of the refrigerant is leaked due to the fall, and the cost of adding the welding process is not only increased, but also the structural failure rate of the product is very high, and there was a problem that mass production is difficult as a whole.

An object of the present invention is to invent the conventional drawbacks as described above, to easily and automatically perforate the tube insertion hole in the heat exchanger header pipe formed of semi-circular aluminum to significantly increase productivity and reduce costs In addition, the present invention provides a tube insertion hole punching device for a heat exchanger header pipe and a method for drilling the same, which prevents the header pipe from being crushed during the drilling of the tube inserting hole to eliminate product defects.

In order to achieve the above object, the tube inserting hole cloth mill of the heat exchanger header pipe according to the present invention forms a semicircular inserting groove into which the header pipe is fitted, and arranges an upper mold to be elevated by a press on the upper mold. Arranging a plurality of punches perforating the tube insertion hole at the lower portion of the upper die at an appropriate interval, and on both sides of the lower die to install a pair of cores respectively introduced and discharged simultaneously into the header pipe to move left and right, the both sides Punch grooves are formed in the cores, respectively, and a pair of removal pins for removing scraps are inserted into and out of the punch grooves at the rear of both cores at the same time so as to be movable back and forth, and in the lower grooves. Push up the header pipe punched through the tube insertion hole to the upper side and install the discharge bar for lifting outward. A pair of air ejectors for discharging the header pipe discharged upward to the discharge guide plate are installed on both front sides of the lower die, and the operation of the punch, core, removal pin, discharge bar, and air discharger is performed by a cylinder, a sensor, and a controller. It is to be automatically controlled sequentially.

In order to achieve the above object, the tube insertion hole drilling method of the heat exchanger header pipe according to the present invention inserts a heat exchanger header pipe formed of semi-circular aluminum into a lower injection slot, and a plurality of punch grooves are formed at appropriate intervals. A pair of cores are simultaneously introduced into the inside of the header pipe from both sides, and a plurality of punches are lowered to drill the tube insertion holes at appropriate intervals in the header pipe, and the punch is raised to the original state after the tube insertion holes of the header pipe are drilled. After discharging the two cores inserted into the header pipe from both sides into the original state, and removing the scraps from the punch grooves of the two cores in the front when the tube insertion hole is drilled with a plurality of removal pins arranged on both sides with appropriate intervals. And push the header pipe punched through the tube insertion hole to the upper part and discharge it to the outside. Ejecting the air in the air ejector is a so as to discharge the tuchul header pipe.

Hereinafter, the technical configuration of the present invention according to the accompanying drawings in detail.

As shown in FIGS. 1 to 14, the tube inserting hole fabrication mill of the heat exchanger header pipe according to the present invention includes: a lower mold 10 having a semicircular injection groove 11 into which the header pipe 1 is fitted; An upper mold 20 disposed on an upper portion of the lower mold 10 to move up and down through a press P; A plurality of punches 30 arranged in the upper die 20 at appropriate intervals to drill the tube insertion holes 2; A pair of cores 40 having punch holes 41 into which the punches 30 are inserted and inserted into and ejected from the header pipe 1 from both sides; A pair of removal pins 50 for removing the scrap 3 while being introduced and discharged into the punch grooves 41 of the both side cores 40; A discharge bar 60 installed in the injection groove 11 of the lower mold 10 to discharge the header pipe 1 having the tube insertion hole 2 perforated thereon; A pair of air dischargers 80 for discharging the header pipe 1 discharged to the upper portion of the tube insertion hole 2 through the discharge guide plate 70; Cylinders (C1) (C2) (C3) for operating the core (40), the removal pin (50), and the discharge bar (60), respectively; Sensors (S1) (S2) for sensing the input and discharge states of the two cores (40), respectively; And a controller 90 for automatically controlling their operations sequentially, which is a basic feature of the technical configuration.

Here, the header pipe (1) is formed in a semi-circular aluminum as shown in Figure 12a, 12b to be used for a heat exchanger, such a header pipe (1) through a plurality of tube insertion holes (2) through the fabric factory of the present invention It is drilled at appropriate intervals.

The lower mold 10 is fixed to the upper portion of the frame (F) to support the header pipe 1, the lower mold 10 is a semi-circular injection groove 11 into which the header pipe 1 is fitted as shown in FIG. ) Is formed, and several discharge bars 60 are provided in the input groove 11 so as to be liftable.

The upper die 20 is installed to be elevated on the upper portion of the lower die 10, as shown in Figure 1 to lift through the press (P), the lower portion of the upper die 20, as shown in Figure 7a, 7b, 7c A shock absorbing plate 21 for absorbing and mitigating an impact during drilling of the tube insertion hole 2 is provided to be liftable, and a plurality of shock absorbing springs 22 are mounted between the upper die 20 and the shock absorbing plate 21.

As shown in FIGS. 7A, 7B, and 7C, a plurality of the punches 30 are arranged at a lower portion of the upper die 20 at appropriate intervals to drill the tube insertion holes 2 in the header pipe 1. 30 is a pin (31) for preventing the rise of the scrap (3) is embedded in the vertical lower as shown in Figure 7c and 13, the upper mold 20 is provided with a spring to give elasticity to the pin (31) ( 32) is mounted.

Therefore, since the mill pin 31 receives the elasticity of the spring 32, the lower end of the mill pin 31 normally protrudes to the outside as shown in FIG. 13, while the punch 30 when the tube insertion hole 2 is drilled. At the moment of contact with the header pipe 1, the mil pin 31 is completely immersed into the punch 30 while compressing the spring 32. When the drilling of the tube insertion hole 2 is completed, the mill pin 31 is applied to the restoring force of the spring 32. Since the lower end of the mill pin 31 is projected to the outside again, the scrap 3 is pushed down, so that the scrap 3 sticks to the punch 30 after the drilling of the tube insertion hole 2. Is prevented. At this time, if the mill pin 31 is not used, the oil-scraped scrap 3 does not fall down but sticks to the punch 30 again and sticks to the tube insertion hole 2, thus inserting the tube. Since the scraps 3 stuck to the holes 2 are not automatically removed, the mill pin 31 is used to prevent them.

The pair of cores 40 on both sides prevents the header pipe 1 from being crushed due to the pressure of the punch 30 when the tube insertion hole 2 is drilled. As shown in FIGS. 8A and 8B, each side of the lower mold 10 is movable to the left and right, respectively, and simultaneously introduced and discharged into the header pipe 1 from both sides, respectively, and the upper side of both cores 40 is illustrated in FIGS. 11A and 11B. As described above, a plurality of punch grooves 41 into which the punches 30 are inserted at the time of drilling the tube insertion hole 2 are formed at appropriate intervals, and the cores 40 are moved from side to side at both ends of the core 40. The cylinders C1 are respectively connected.

Therefore, in order to prevent the header pipe 1 from being crushed when the tube insertion hole 2 is drilled, both pairs of cores 40 are simultaneously introduced into the header pipe 1 from both sides, respectively. Scraps 3 generated during drilling fall into the punch grooves 41 of both cores 40, and both cores 40 introduced into the header pipe 1 after drilling of the tube insertion holes 2 are simultaneously returned to their original state. Is discharged.

The pair of removal pins 50 on both sides is to remove the scrap 3 while simultaneously entering and exiting the punch grooves 41 of the cores 40 on both sides, as shown in FIG. 10B. ) Are each provided with a proper interval so as to be able to move back and forth on both sides of the core 40, a pair of removal pins 50 on both sides to remove the scrap (3) dropped in the punch groove 41 to the outside to remove it The cylinders C2 for moving the removal pins 50 back and forth are connected to the rear of both side removal pins 50.

Therefore, the scrap 3 generated during the drilling of the tube insertion hole 2 falls into the punch groove 41 of the both cores 40, and after the both cores 40 are ejected, both side removal pins are formed by the cylinder C2 ( At the same time, each of the removal pins 50 is removed by the cylinder C2 when the removal of the scraps 3 is completed. Are discharged at the same time. In this case, the upper width L1 of the punch groove 41 is narrow and the lower width L2 is wide as shown in FIG. 11B so that the scrap 3 is easily removed by the pair of removal pins 50 on both sides.

The discharge bar 60 is installed to be elevated in the inlet groove 11 of the lower mold 10 as shown in Figure 9a, 9b, 9c to push the header pipe (1) in which the tube insertion hole (2) is perforated upwards. By discharging, the upper part of the discharge bar 60 is formed in a semi-circular shape to support the header pipe 1, a slider 61 is connected to the cylinder C3, and the rear lower portion of the discharge bar 60. And inclined surfaces 60a and 61a facing each other, as shown in FIG. 9C, respectively, on the front upper part of the slider 61, and the lower mold 10 provides elasticity to the discharge bar 60 as shown in FIG. 5B. The spring 62 is mounted. At this time, the slider 61 is installed to be movable back and forth behind the discharge bar 60, the cylinder (C3) is connected to the rear end of the slider (61).

Therefore, as shown in FIG. 9A, when the slider 61 is moved backward by the cylinder C3, the inclined surface 60a is lowered along the inclined surface 61a while receiving the elasticity of the spring 62. Is lowered. On the other hand, when the slider 61 is moved forward by the cylinder C3 as shown in Fig. 9C, the inclined surface 60a rises along the inclined surface 61a while compressing the spring 62. The outlet bar 60 pushes the header pipe 1 upward while being raised to eject it.

That is, when the header pipe 1 is introduced into the insertion groove 11 of the lower mold 10 in order to drill the tube insertion hole 2 as shown in FIG. 9A, the discharge bar 60 may resilient the spring 62. When the punch 30 is raised and both pairs of cores 40 are discharged after the drilling of the tube insertion hole 2 is completed, as shown in FIG. 9C, the cylinder C3 is moved to the slider 61. Pushes forward to raise the discharge bar 60, while the discharge bar 60 is pushed upward to push the header pipe 1 introduced into the injection groove 11 upward.

The discharge guide plate 70 is inclined to the rear of the lower mold 10 as shown in Figure 3, the discharge guide plate 70 is discharged to the rear through a pair of air discharger 80 on both sides as shown in Figure 10c Guide the discharge of the header pipe (1).

The pair of air ejectors 80 on both sides discharges the header pipe 1 discharged to the upper portion of the input groove 11 to the discharge guide plate 70. The pair of air ejectors 80 on both sides is as shown in FIG. Likewise installed on both front sides of the lower mold 10, both of the pair of air discharger 80 ejects the air at the same time as shown in Figure 10c to discharge the header pipe 1 to the discharge guide plate (70). At this time, the pair of air ejectors 80 on both sides are automatically controlled by the controller 90 to eject the air at the same time.

The two pairs of cylinders C1 simultaneously move both pairs of cores 40 from side to side, respectively, and the two pairs of cylinders C1 are automatically controlled by the controller 90, as shown in FIGS. 8A and 8B. Likewise, both pairs of cores 40 are simultaneously introduced into and discharged into the hair pipe 1.

The two pairs of cylinders C2 simultaneously move both pairs of removal pins 50 forward and backward, respectively, and the two pairs of cylinders C2 are automatically controlled by the controller 90 while FIGS. 10A, 10B, and 10C are provided. As shown in the two pairs of removal pins 50 into and out of the punch groove 41 of both cores 40 at the same time.

The cylinder C3 moves the slider 61 back and forth. The cylinder C3 is automatically controlled by the controller 90 and moves the slider 61 back and forth as shown in FIGS. 9A, 9B and 9C. The slider 61 moves up and down the discharge bar 60 while being moved back and forth by the cylinder C3.

The pair of sensors (S1) on both sides and the pair of sensors (S2) on both sides are respectively installed on both sides of the frame (F) as shown in FIG. 3 to sense the input state and the ejection state of both cores 40, respectively. The pair of sensors (S1) on both sides detects this state when the pair of cores (40) on both sides are completed into the header pipe (1) and transmits the signal to the controller (90). The pair of sensors (S2) on both sides are When the discharge of both cores 40 is completed, this state is detected and transmitted to the controller 90 as a signal.

The controller 90 is to automatically control the operation of the press (P) and the cylinder (C1) (C2) (C3) in sequence, such a controller (90) is a press (P), cylinder (C1) (C2) ( C3), the sensor (S1) (S2), and the air discharger 80 is electrically connected, the controller 90 is provided with an operation switch 91 as shown in FIG. At this time, the operation switch 91 is preferably installed in the front of the lower mold 10 so that the operator can operate conveniently.

When described in detail according to the accompanying drawings the overall operating relationship of the tube insertion hole drilling apparatus of the heat exchanger header pipe of the present invention configured as described above are as follows.

First, the operator inserts the heat exchanger aluminum header pipe 1 formed into a semi-circular shape into the feeding groove 11 of the lower mold 10 as shown in FIGS. 8A and 9A, and in this state, is electrically connected to the controller 90. When the connected operation switch 91 is turned 'on', the controller 90 is operated, and a pair of cylinders C1 on both sides are automatically operated by the automatic control of the controller 90. As shown in FIG. 40 are moved to the header pipe 1 side at the same time, and as a result, both pairs of cores 40 are inserted while being simultaneously inserted into the header pipe 1 at both sides, respectively. At this time, the discharge bar 60 is installed to be elevated in the injection groove 11 of the lower mold 10 maintains the lowered state, the header pipe 1 is a semi-circular injection groove 11 and the discharge bar 60. On top of the

When the input of both cores 40 into the header pipe 1 is completed on both sides, both sensors S1 sense the input state and send a signal to the controller 90, and then press the controller 90 by automatic control. (P) is automatically operated to lower the upper die 20, as shown in Figure 9b, thereby causing a plurality of punches 30 at the same time the upper die 20 is provided at the same time, as a result the header pipe (1) ), A plurality of tube insertion holes 2 are regularly drilled at appropriate intervals. At this time, the punch 30 drills the tube insertion hole 2 while descending to the center portion of the punch groove 41 as shown in FIG. 13, and the scrap 3 generated during the drilling is punch hole 41 of both cores 40. Falls on).

When the tube insertion hole 2 is drilled, a pair of cores 40 are introduced into the header pipe 1 from both sides, so that the punch 30 descends to a high pressure while the tube insertion hole is inserted into the header pipe 1. Even if the hole (2) is drilled, the header pipe 1 is not crushed by the pair of cores 40 which are introduced. In addition, when the punch 30 touches the header pipe 1 during the punching, the mil pin 31 is immersed in the interior as shown in FIG. 13 while compressing the spring 32. When the punching is completed, the milling force 31 is applied to the restoring force of the spring 32. As the mill pin 31 protrudes, the scrap 3 is pushed downward to prevent the rising of the scrap 3.

When the drilling of the tube insertion hole 2 is completed, the press P is automatically operated by the automatic control of the controller 90 to raise the upper die 20 and the punch 30 to their original state as shown in FIG. 9C. When the lifting of the upper die 20 and the punch 30 is completed, the pair of cylinders C1 on both sides are automatically operated again by the automatic control of the controller 90 so that the pair of cores 40 on both sides are shown in FIG. 10A. As described above, each of them is moved to its original state. As a result, both pairs of cores 40 are discharged from the header pipe 1 and returned to their original state.

When the discharging of both cores 40 is completed, both pairs of sensors S2 respectively detect the discharging state and send a signal to the controller 90. Then, the pair of cylinders C2 are controlled by automatic control of the controller 90. Is automatically operated so that both pairs of removal pins 50 are pushed forward, respectively, as shown in FIG. 10B, and as a result, both pairs of removal pins 50 are removed from both cores 40 as shown in FIG. Each of the two pairs of cylinders C2 are reversed by automatic control of the controller 90 when the scrap 30 is pushed out and removed by being pushed out of the punch groove 41 to be discharged and removed. Since each operation, the pair of removal pins 50 on both sides are discharged while moving back to the original state as shown in FIG. 10C.

And the cylinder (C3) is automatically operated by the automatic control of the controller 90 in conjunction with the above operation to push the slider 61 forward as shown in Figure 9c, the spring when the slider 61 is moved forward While compressing the 62, the inclined surface 60a rises along the inclined surface 61a, and as a result, the discharge bar 60 rises, pushing the header pipe 1 through which the tube insertion hole 2 is drilled upward. Take out and discharge to the outside of the injection groove (11).

When the ejection of the header pipe 1 is completed, both pairs of air ejectors 80 operate simultaneously by automatic control of the controller 90, and as shown in FIG. 10C, the pair of air ejectors 80 ejects air simultaneously. When the tube insertion hole 2 is discharged to the discharge guide plate 70, the punched header pipe 1 is completed.

Therefore, the present invention can automatically puncture the tube insertion hole (2) in the header pipe (1) while continuously repeating the above operation, a pair of cores (both sides) into the inside of the header pipe (1) during drilling Since 40) is introduced, it is possible to prevent the header pipe 1 from being crushed in advance.

Hereinafter, a method of drilling a tube insertion hole of a heat exchanger header pipe according to the present invention.

The tube insertion hole drilling method of the heat exchanger header pipe according to the present invention comprises the steps of inserting the header pipe (1) into the injection groove 11 of the lower mold 10; Injecting a pair of cores 40 into the header pipe 1 from both sides; Lowering the punch 30 to drill the tube insertion hole 2 in the header pipe 1; Raising punch 30 after drilling; Discharging both cores 40 introduced into the header pipe 1; Inserting both side removal pins 50 into the punch grooves 41 of the discharged both side cores 40 to remove the scraps 3; Ejecting both side removal pins 50 after removal; Raising the discharge bar 60 to discharge the header pipe 1; Characterized in that it comprises a step of discharging the discharged header pipe 1 to both air discharger (80).

The tube insertion hole drilling method of the heat exchanger header pipe according to the present invention as described above will be described with reference to FIG. 15 as follows.

(Header Pipe Input Process)

It is molded from a semi-circular aluminum and used in the heat exchanger to support the header pipe (1) by hand directly into the injection groove 11 of the lower mold 10 by hand.

Core input process

When the insertion process of the header pipe 1 is completed, a pair of cores 40 on both sides formed with a plurality of punch grooves 41 are simultaneously moved at appropriate intervals to be introduced into the header pipe 1 from both sides.

(Tube insertion hole drilling process)

When the injection of both cores 40 into the header pipe 1 is completed, the punch 30 is lowered to drill the tube insertion hole 2 into the header pipe 1, and when the tube insertion hole 2 is completed, The punch 30 is raised to its original state.

Core dispensing process

When the punch 30 rises, both pairs of cores 40 introduced into the header pipe 1 from both sides are moved to the original state and discharged.

(Scrap removal process)

When the discharging of both cores 40 is completed, a pair of removal pins 50 on both sides are introduced into the punch grooves 41 of both cores 40 to push the scraps 3 to the outside to remove the scraps 3, respectively. When the removal of is completed, the pair of removal pins 50 on both sides are discharged to their original state.

(Header Pipe Discharge Process)

When the discharge of both cores 40 in conjunction with the scrap removal process is completed, the discharge bar 60 is raised to push the header pipe 1 through which the tube insertion hole 2 is perforated to the top to the outside of the feed groove 11. To be discharged.

(Header Pipe Discharge Process)

When the ejection of the header pipe 1 is completed, the air is simultaneously ejected to both pairs of air ejectors 80 to eject the ejected header pipe 1.

Therefore, according to the tube insertion hole drilling apparatus and the drilling method of the heat exchanger header pipe of the present invention, it is possible to simply and automatically drill the tube insertion hole 2 directly into the header pipe 1 formed of semi-circular aluminum. Through this, the productivity of the header pipe 1 can be greatly improved, and the cost can be reduced, and the mass production of the header pipe 1 is possible.

In addition, according to the present invention, when a pair of cores 40 are inserted into the header pipe 1 from both sides when the tube insertion hole 2 is drilled, the header pipe is prevented from being crushed, thereby eliminating product defects. There is this.

As described above, the present invention can automatically improve the productivity by greatly drilling the tube insertion hole in the header pipe formed of semi-circular aluminum, and at the same time, reducing the cost, and the header pipe is crushed during the drilling of the tube insertion hole. It is a very useful invention that can prevent product loss by preventing loss.

Claims (5)

A lower die 10 having an injection groove 11 into which the header pipe 1 is fitted; An upper mold 20 disposed on an upper portion of the lower mold 10 to move up and down through a press P; A punch 30 arranged in the upper die 20 to drill the tube insertion hole 2; A pair of cores 40 having punch holes 41 into which the punches 30 are inserted and inserted into and ejected from the header pipe 1 from both sides; A pair of removal pins 50 for removing the scrap 3 while being introduced and discharged into the punch grooves 41 of the both side cores 40; A discharge bar (60) installed in the injection groove (11) to discharge the punched header pipe (1) upward; A pair of air dischargers 80 for discharging the discharged header pipe 1 to the discharge guide plate 70; Cylinders (C1) (C2) (C3) for operating the core (40), the removal pin (50) and the discharge bar (60), respectively; Sensors (S1) (S2) for sensing the input and discharge states of the two cores (40), respectively; And a controller (90) for automatically controlling their operations sequentially. According to claim 1, The punch 30 is embedded in the vertical pinch to prevent the rise of the scrap (3) is embedded in the upper mold 20, the spring 20 for imparting elasticity to the mill pin (31) A tube insertion hole drilling apparatus of a heat exchanger header pipe, characterized in that (32) is mounted. The tube insertion hole drilling apparatus of claim 1, wherein the upper width (L1) of the punch groove (41) is narrow and the lower width (L2) is wide. According to claim 1, wherein the upper part of the discharge bar 60 is formed in a semi-circular shape to support the header pipe 1, the cylinder (C3) is connected to the slider 61, the rear of the discharge bar 60 Slope surfaces 60a and 61a facing each other are formed at a lower portion and a front upper portion of the slider 61, and the lower mold 10 is provided with a spring 62 for imparting elasticity to the discharge bar 60. Tube insertion hole punching device for heat exchanger header pipe. Injecting the header pipe 1 into the inlet groove 11 of the lower mold 10; Injecting a pair of cores 40 into the header pipe 1 from both sides; Lowering the punch 30 to drill the tube insertion hole 2 in the header pipe 1; Raising punch 30 after drilling; Discharging both cores 40 introduced into the header pipe 1; Inserting both side removal pins 50 into the punch grooves 41 of the discharged both side cores 40 to remove the scraps 3; Ejecting both side removal pins 50 after removal; Raising the discharge bar 60 to discharge the header pipe 1; A method for drilling a tube insertion hole of a heat exchanger header pipe, characterized by comprising a step of discharging the discharged header pipe (1) to both air discharger (80).

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