KR100232674B1 - Auto welder for heat exchanger - Google Patents

Abstract

The present invention relates to an automatic welding device for a heat exchanger installed in a heating hot air heater, which allows two circulation pipes located at the outer circumference of the circulation pipes of the heat exchanger to be placed therein and a pair of anchor rollers to stably settle the heat exchanger to be welded. And a settling device having a cylinder device for lowering and operating the settling roller to enable rotational operation of the heat exchanger to be welded, and placed inside each of the supports placed on both sides of the settling device. It is formed integrally with the left and right actuators that cover the left and right caps of the heat exchanger seated on the table and rotate together with the heat exchanger in a state of fitting the horizontal movement operation in close contact with the flange. While connected to the slide surface of the rotary cam, it moves horizontally together with the left and right actuators and simultaneously moves up and down. Left and right torch guide devices installed to perform double acting, guide rails mounted on the both supports and guide horizontal movement of both torch guide devices, and upper ends of cam operating rods of the two torch guide devices are perpendicular to the fixing members, respectively. Heat exchanger is provided with a left and right torch lifting device having a cylinder rod installed on both sides of the left and right, a guide rod which is lifted and operated by piston rods of both cylinder units, and a welding torch installed at the lower end of the guide rod. It is characterized in that the heat exchange portion and the left, right cap to be welded automatically.

Description

Automatic welding device of heat exchanger

The present invention relates to an automatic welding device for a heat exchanger installed in a heating hot air fan.

In general, the heating warmer is a system for heating the room by sending the combustion heat of the fuel to the heat exchanger to exchange heat with the external air, and then blow the air heated by the heat exchanger into the room.

The heat exchanger 100 of the heating air blower is a heat exchange unit 104 and the partition is composed of a plurality of circulation pipes 101 and the attachment plate (102, 103) in which both ends of the circulation pipes are integrally coupled. It is composed of left and right cams (109, 110) installed inside and formed with an inlet (105), an outlet (106) and a flange (107, 108), respectively, and the attachment plate (102, 103) and the left, The right caps 109 and 110 are generally circular in shape, and the inlet 105 and outlet 106 portions are formed in a straight line.

In the prior art, the heat exchange part 104 and the left and right caps 109 and 110 are primarily attached to the plate plates 102 and 103 on both sides and the flanges 107 of the left and right caps 109 and 110, respectively. After 108 was welded (partly welded at regular intervals), the joints of the flanges 107 and 108 of the attachment plates 102 and 103 were welded by an artificial welding operation.

However, as the conventional man-made welding work takes a lot of time and effort, the workability cannot be expected to be improved. In particular, since the heat exchanger is made of stainless steel, special welding, that is, welding with argon gas welding is required. If you are not skilled, you will not be able to carry out welding work, and even if you are skilled, there will be a lot of welding defects. If this happens, both the heat exchanger and the left and right caps will be treated poorly and disposed of as scrap. As a result, the productivity of the heat exchanger is lowered and the production cost is increased, which leads to a weakening of the competitiveness.

The present invention has been made in order to solve the above problems, welding operation by providing an automatic welding device that can automatically perform the welding operation of the heat exchanger of the heat exchanger and the left and right caps assembled on both sides of the heat exchanger. The purpose is to reduce the production cost of the heat exchanger by improving the workability and productivity by reducing the time and effort required for the process and by eliminating the welding defects at the same time. Two inventions.

The present invention is a means for achieving the above object, a heat exchange portion consisting of a plurality of circulation pipes and the left and right attachment plate is coupled to both ends of the circulation pipe so that the contact with the air well, and the heat exchange unit In the welding of the left and right caps with flanges in close contact with the periphery of the left and right attachment plates, and welding the joints between the left and right attachment plates and the left and right caps in a sealed state, the circulation of the heat exchange part A pair of support rollers for stably placing a heat exchanger, which is a welded object, which allows two circulation pipes located at the outer periphery of the pipes, and by lowering the support rollers to enable rotational operation of the heat exchanger as a welded object. An arm rest holding a cylinder device; It is installed on both sides of the support vertically installed on both sides of the rest of the support, the horizontal movement operation in close contact with the flange while wrapping the left and right caps of the heat exchanger seated on the rest by the cylinder device and rotates together while wrapping the heat exchanger Left and right operating devices to operate; Left and right sides installed to move horizontally together with the left and right actuators in a state connected to the slide surface of the rotary cam integrally formed with the left and right actuators to simultaneously perform reciprocating operation up and down. A torch guide device; Guide rails installed on both support members to guide horizontal movement of both torch guide devices; And guide rods which are lifted and operated by the piston rods of the cylinder devices installed on both left and right sides of the cam operating rods of the upper side of the cam operating rods of the both side torch guide devices, and the piston rods of the cylinder devices of the both sides. A left and right torch elevating device having a welding torch; And a heat exchange part of the heat exchanger seated on the rear support of the settled body, which rotates by opening and closing the piston rod of the cylinder device while opening the upper portion of the settled body. Gear box device for transmitting the rotational force to the spline shaft of the left and right operating device to install the protective cover to cover the upper portion, and the retracting operation toward the heat exchanger by the sunk operation of the cylinder device horizontally installed on the support on both sides It is equipped with another feature.

1 is a front view of a state in which a heat exchanger, which is a welded object in a weldable state of the present invention, is placed on a support frame.

2 is a front view of a state in which the protective cover of the present invention covers the heat exchanger of the heat exchanger.

3 is a front view of an operating state in which the left and right operating devices of the present invention move forward toward the heat exchanger to surround the left and right caps of the heat exchanger.

Figure 4 is a side view showing the operating state of the protective cover the present invention.

5 is a front view of the left and right torch lifting device installed in the cam operating rod of the present invention operated in the welding position.

6 is a cross-sectional view taken along the line A-A of FIG.

7 (a) and 7 (b) is an operating state diagram showing that the cam operating rod of the present invention operates along the sliding surface of the rotary cap during the rotation operation of the left and right operating device.

8 (a) and 8 (b) are partial separate perspective views showing the configuration of a heat exchanger as a welded object of the present invention, and a combined perspective view in a soluble welding state.

* Explanation of symbols for main parts of the drawings

1: Settable 2a, 2b: Support

3a, 3b, 9,14,71: Cylinder device 4a, 4b: Left and right operating device

5: guide rail 6a, 6b: left, right torch guide device

7a, 7b: left and right torch lifting device 8: protective cover

11: support roller 12: support hole

13: fixed plate 15: guide rod

41: rotating shaft 42: rotating cap

43: incision groove 61: moving member

62: cylindrical portion 63: cam operating rod

64: fixing member 72: lifting plate

73: guide rod 74: angle adjustment member

75: welding torch 100: heat exchanger

101: circulation pipe 102,103: mounting plate

107,108: flange 109,110: left and right cap

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a state in which a heat-exchanger whose welded state is to be welded is seated on a seat plate, and FIG. 2 is a front view of a state in which a protective cover of the present invention covers a heat exchanger of a heat exchanger, and FIG. 3 is a present invention. This left and right operating device is a front view of the operating state of the forward operation toward the heat exchanger to hold while holding the left and right caps of the heat exchanger, Figure 4 is a side view showing the operating state of the protective cover of the present invention, Figure 5 Figure 6 is a front view of the left and right torch lifting device installed in the cam operating rod of the present invention in the welding position, Figure 6 is a cross-sectional view taken along line AA of Figure 5, Figure 7 (a), Figure 7 (b) is the present invention This cam operating rod is an operating state diagram showing that the left and right operating devices operate along the slide surface of the rotary cam during the rotary operation. FIGS. 8 (a) and 8 (b) show the configuration of the heat exchanger as the welded object of the present invention. Showing some detached perspective views and Shows a combined perspective view of the weldable state,

Reference numeral 1 denotes a settling platform, wherein the settling platform 1 is open at a semicircular shape so that the heat exchanger 104 of the heat exchanger 100 may be seated. A pair of support rollers 11 formed with a plurality of support grooves 11a capable of supporting the circulation pipe 101 of the heat exchange part 104 are rotatably attached to the support opening 12 at an inner upper end thereof. One support port 12 is configured to be able to move up and down by the piston rod 14a of the cylinder device 14 attached to the process plate 13.

The support 12 is configured to perform the lifting operation up and down as a stable state by the guide rod 15 penetrating the fixing plate (13).

Supports 2a and 2b are provided on both sides of the support 1, and gear boxes 21a and 21b and cylinder devices 3a and 3b are installed horizontally on the outer sides of the support on both sides. In addition, left and right operating devices 4a and 4b are horizontally opposed to each other on both sides of the support 2a and 2b.

The piston rods (not shown) of the cylinder devices 3a and 3b are inserted into the gearboxes 21a and 21b, and the rotary shafts 41 of each of the left and right operating devices 4a and 4b are also drawn. Is installed inside the gear box, a spline (not shown) is formed on a part of the two rotation shaft 41, that is, the portion that does not appear in the gear box (21a) (21b), but only horizontally moved therein. In the gear boxes 21a and 21b, a composition reduction gear (not shown) for decelerating and rotating the rotating shafts 41 by the power of the motor is installed.

The drive reduction gear (not shown) is configured to allow the spline, ie, the rotation shaft 41, to move horizontally in a state in which it is arranged to fit the spline of the rotation shaft 41. Such a configuration allows the piston rods of the cylinder devices 3a and 3b to be horizontally connected to the rotary shaft 41 so that the rotary shaft 41 can move horizontally with respect to the settable 1 when the piston rod is moved in and out. And rotational operation by the reduction gear for simultaneous driving.

The left and right operating device (4a) (4b) is formed of a cylindrical opening on one side so as to surround the left and right caps (109, 110) of the heat exchanger 100, the opposite side of the rotating shaft 41 The rotary cam 42 is formed, and the left and right actuators 4a and 4b may accommodate attachments 111 protruding from the outer circumferential surfaces of the left and right caps 109 and 110 of the heat exchanger. Cutting grooves 43 are formed.

The guide rails 5 are installed at the upper ends of the two side supports 2a and 2b to configure the left and right torch guide devices 6a and 6b to move horizontally. The movable members 61 of the left and right torch guide devices 6a and 6b are provided to be movable on the guide rails 5, and the cylindrical parts 62 of the movable members 61 The cam operating rod 43 which performs the lifting operation in contact with the sliding surface of the rotary cam 42 is provided.

The left and right torch elevating devices 7a and 7b each having a cylinder device 71 in the fixing member 64 at the upper end of the cam operating rod 63 of each of the left and right torch guide devices 6a and 6b. Is installed.

Guide rods 73 are vertically attached to the lifting plate 72 fixed to the piston rod 71a of each cylinder device 71 on the left and right torch elevating devices 7a and 7b. Each of the guide rods 73 is guided up and down by the guide rod 65 of the fixing member 64, and a welding torch is attached to the angle adjusting member 74 attached to the lower end of each of the guide rods 73. 75) are attached.

Protective cover for covering the upper portion of the base 1 while rotating from the hinge portion 83 to the front side of the mounting plate 82 of the upper end of the rear support 81, which is placed on the rear side of the base 1 (8) is provided, and the front end of the piston rod 91 of the cylinder device (9) rotatably attached to the bracket (84) on the upper surface of the mounting plate (82) is connected to the protective cover (8) It is configured to rotate the protective cover.

The operation of the present invention in such a member will be described.

1 shows a state in which the heat exchanger 100 is seated on the top of the support 1, in which the protective cover 8 is not only rotated upward, but also left and right operating devices 4a and 4b. ) Is moved to both side support (2a) (2b), and the two circulation pipes located on the outside of the plurality of circulation pipes 101 constituting the heat exchange part 104 inside the settle (1) It is in a state supported by a pair of support rollers 11.

As described above, the pair of support rollers 11 supporting the heat exchanger 100 are moved up and down to stably support the two circulation pipes 11 in a state in which a plurality of support grooves 11a are formed. (Refer to the virtual line of Fig. 6)

When the operation switch of the control box (not shown) is turned on after the mounting work of the heat exchanger 100 is completed on the support 1, the cylinder device 9 installed on the top of the rear support 81 first. When the piston rod 91 appears to operate by operating the protective cover 8 is rotated downward from the hinge portion 83 as a starting point 4 to cover the upper portion of the heat exchanger 104, the protection The cover 8 does not interfere with the rotational operation of the heat exchanger 100 by covering the upper end of the settable 1 in a state of not being in contact with the circulation pipe 101 constituting the heat exchanger 104.

As soon as the protective cover 8 covers the heat exchanger 104 as described above, the cylinder devices 3a and 3b installed on both side supports 2a and 2b are operated to activate the piston rod. As a result, a part of the rotating shaft 41 appears in the gearbox devices 21a and 21b, so that the left and right operating devices 4a and 4b move the left and right caps 109 and 110 of the heat exchanger 100. In this case, the incision grooves 43 cut in the left and right operating devices 4a and 4b accommodate the protrusions 111 formed on the outer circumference of the left and right caps 109 and 110, respectively. The right cap is caught, and thus the cam operating rod 63 connected to the rotary cam 42 moves accordingly when the left and right operating devices 4a and 4b move to catch both sides of the heat exchanger 100. Therefore, the left and right torch guide devices 6a and 6b are moved along with the left and right actuators 4a and 4b on the guide rails 5 (see FIG. 3).

As described above, when the left and right operating devices 4a and 4b catch the left and right caps 109 and 110 of the heat exchanger 100, the left and right torch elevating devices 7a and 7b respectively. When the cylinder devices 71 installed in the valve unit are operated to make the piston rod 71a appear and operate, the lifting plate 72 lowers and operates the guide bar 73 so that the welding torch 75 exchanges heat exchanger 100. The attachment 104 (102) 103 on both sides of the unit 104 and the flanges 107 and 108 of the left and right caps 109 and 110 are lowered to a position where they can be welded (see Fig. 5).

In addition, as described above, the cylinder device 14 of the stand 1 is operated in a state in which the left and right operating devices 4a and 4b grip the left and right caps of the heat exchanger 100. Accordingly, the piston rod 14a is immersed and descends the support port 12 so as to escape downward from the circulation pipe 101 supported by the support roller 11 (see FIG. 6 in solid line). When the heat exchanger 100 itself is a free rotation operation.

As described above, when the lowering operation of the support roller 11 is completed, the drive reduction gear installed in the gearbox devices 21a and 21b starts the rotation operation, and the drive reduction gear is a spline of the rotation shaft 41. As the left and right actuators 4a and 4b are rotated in a moderately decelerated state while being coupled to each other, the welding torch 75 also performs argon gas welding. Both sides of the attachment plate material 102, 103 and both flanges 107, 108 are welded.

The welding torch 75 can adjust the welding position by the angle adjusting member 74, and the rotational speed of the left and right operating devices (4a, 4b) can be accurately welded as the welding torch (75). Because it is designed to rotate at speed, it does not cause welding defect.

On the other hand, when the heat exchanger 100 in which the welding of both welding torch 75 proceeds as described above reaches the point where the welding is completed to the desired welding position, the welding torch 75 stops the welding operation and at the same time, The right actuators 4a and 4b also stop rotating.

After the welding operation is completed as described above is to operate in the reverse order to proceed with the above-described welding operation to repeat the operation to prepare for the next welding operation.

According to the present invention as described above, the operation of seating the heat exchanger and the left and right caps with only a part of the heat exchanger part is artificially performed only after the operation to cover the protective cover automatically proceeds to the welding operation as a welding torch. It is possible to carry out the welding work of the heat exchanger more easily and to pursue the precision of welding, and also to weld the both sides of the heat exchanger and the left and right caps at the same time. As conventionally, the operator can perform the welding operation more than twice as fast as welding the other side after welding the other side, which has the effect of further improving the productivity as well as the workability, especially the heat exchanger Welding can reduce labor costs while improving productivity Can significantly reduce the cost of production of ventilated inventors will be with the features you can get the effect of increasing competitiveness.

Claims (4)

A heat exchange part comprising a plurality of circulation pipes and left and right attachment plates having both ends coupled to each other so as to be in good contact with air, and a left flange formed in close contact with the periphery of the left and right attachment plates of the heat exchange part. In the heat exchanger for welding the right side cap and the left and right side mounting plate and the left and right side caps in a sealed state, the heat exchanger is located on the outer periphery of the circulation pipes 101 of the heat exchanger 104. A pair of support rollers 11 for stably placing the heat exchanger 100 to be welded by allowing two circulation pipes to be settled, and the support rollers are lowered to enable rotational operation of the heat exchanger to be welded. A support 1 for holding a cylinder device 14 to make; The heat exchanger 100 of the heat exchanger 100 which is installed on the outside of each of the supports 2a, 2b vertically installed on both sides of the stabilizer 1 and seated on the stabilizer 1 by the cylinder devices 3a, 3b. Left and right operating device (4a) for the horizontal movement operation in close contact with the flange 107, 108 and the rotation operation in the state wrapped around the heat exchanger 100 while wrapping the left and right cap (109, 110) ( 4b); In the state connected to the slide surface of the rotary cam 42 which is integrally formed with the left and right operating device (4a) (4b) to move horizontally together with the left and right operating device, and reciprocating up and down simultaneously A right and right torch guide device (6a) (6b) facing each other so as to perform an operation; Guide rails (5) installed on the support members (2a) and (b) to guide horizontal movement of the torch guide devices (6a) and (6b); And both side torch guide devices 6a and 6b are installed in the cylinder device 71 opposite to the left and right sides of the cam operating rod 43 at the upper and lower sides of the fixing members 64, respectively. Left and right torch elevating devices (7a) (7b) having a guide rod (73) for elevating operation by a rod (71a) and a welding torch (75) installed at the lower end of the guide rod; Automatic welding device of heat exchanger characterized in that it comprises a. According to claim 1, wherein the rear support (81) of the support (1) starting from the hinge portion 83 as a starting point by rotating the operation of the piston rod 91 of the cylinder device (9) while the rotation support ( A protective cover 8 covering an upper part of the heat exchanger 100 and an operation of opening the upper part of 1), and a circulation tube 101 of the heat exchanger 104 inside the seat 1. Equipped with a cylinder device (14) capable of lifting and lowering the support roller 11 for supporting the heat exchanger (100) to stably seat the heat exchanger (100) and to enable the rotation operation of the heat exchanger, characterized in that Automatic welding device. According to claim 1, The left and right torch guide device (6a) (6b) is in contact with the slide surface of the rotary cam 42 in the state that is allowed to move up and down in the cylindrical portion at the same time, Automatic welding device of heat exchanger, characterized in that it consists of a cam operating rod (43) moving together with the right operating device (4a) (4b) and a moving member (61) for guiding the horizontal movement on the guide rail (5). . According to claim 1, wherein the left and right torch lifting device (7a) (7b) is the cylinder device 71 and the piston rod of the cylinder device installed perpendicular to the fixing member 64 of the upper end of both cam operating rod (63) (71a) of the heat exchanger, characterized in that consisting of a welding torch 75, the welding angle is adjusted by the guide rod 73 to move up and down by the indentation operation and the angle adjusting member 74 attached to the lower end of the guide rod Automatic welding device.

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