KR100641813B1 - Apparatus for brazing multi point of articles - Google Patents

Abstract

The present invention discloses a multi-point brazing welding apparatus for sensing the temperature of the base metal to control the brazing welding and braze welding a long product. Multi-point brazing welding apparatus according to the present invention is a temperature sensing means for sensing the temperature of the base material to be brazed, and a plurality of torch and brazing are mounted so as to be movable in the X-axis, Y-axis and Z-axis and arranged to one point Brazing welding means consisting of a welding rod supply member arranged to supply a welding rod to a portion of the base material to be welded, and temperature control for receiving temperature data of the base metal measured from the temperature sensing means and controlling the temperature of the heat source discharged from the plurality of torches. X axis transfer means mounted to transfer the means and brazing welding means to the X axis, Y axis transfer means mounted to transfer the brazing welding means to the Y axis, and brazing welding means can be transferred to the Z axis. The three-axis transfer means consisting of the Z-axis transfer means mounted so that the three-axis transfer means moves the brazing welding means to the position where the base material is disposed. Position control means for controlling the three-axis transfer means to transmit. Accordingly, the present invention can not only improve the quality of brazing welding through accurate temperature sensing, but also braze welding multiple points of products such as long lengths of freezing, air conditioning, and heating and heating headers.

Brazing, welding, substrate, temperature control, multi-point, servo motor, linear motor guide

Description

Multipoint Brazing Welding Equipment {APPARATUS FOR BRAZING MULTI POINT OF ARTICLES}

1 is a plan view of a multi-point brazing welding apparatus according to an embodiment of the present invention.

2 is a side view of a multi-point brazing welding apparatus according to an embodiment of the present invention.

3 is a perspective view showing a welding rod supply member.

Figure 4 is a perspective view showing a part of the header for freezing, air conditioning and heating and heating prepared according to an embodiment of the present invention.

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

♣ Explanation of symbols for main parts of drawing ♣

2: subjective 4: branching

6: brazing weld 10: base

12: base pillar 14: base material

16: jig 17: index motor

18: rotating shaft 20: conveying means frame

22: Y axis moving panel 24: X axis moving panel

26: Z axis frame 30: X axis servo motor

31: X axis linear motor guide 32: Ball screw

34: X axis linear motor block 40: Y axis servo motor

42: Y axis linear motor guide 44: Y axis linear motor block

50: Z axis servo motor 52: Z axis linear motor guide

54: Z axis linear motor block 62: cantilever for fixing

64: tochigo jig 70: torch

72: torch sphere 80: welding rod feeder

81: welding rod supply shaft 82: welding rod supply nozzle

83: welding rod 84: nozzle mounting pipe

85: nozzle drive cylinder 86: cylinder piston

90: temperature sensing means 92: temperature controlling means

The present invention relates to a multi-point brazing welding apparatus, in particular, it is possible to control the temperature of the base material during brazing welding by sensing the temperature of the base material, and as a welding part when brazing a product having a plurality of welding points while being manufactured long A multipoint brazing welding device in which position is accurately controlled.

Joining with filler metal is largely divided into welding, brazing and soldering. These three methods are classified based on the filler metal temperature and the base material melting point.

First, soldering is a method of joining with filler metal of 450 ° C. or less, and welding and brazing is a method of joining with filler material of 450 ° C. or more. Here, welding is a method of joining above the melting point of the base material, while brazing is a method of joining two base materials by applying heat using a filler metal in a state where the base material is not damaged below the melting point of the base material.

The conventional brazing welding process is performed by manual brazing welding and brazing welding by a special machine. First, brazing welding by hand is performed by welding the header using an oxygen welding machine and a silver lead electrode in a state in which the main pipe and the branch pipe are assembled. Manual brazing welding ensures that the substrate is welded to the appropriate temperature through the oxygen welder temperature control, as experienced by the operator. In addition to the temperature, manual brazing welding is determined by the operator's experience up to the welding time and the electrode feeding position.

Next, in the welding process by the special machine, when the feed is supplied to the brazing welding machine in the state of assembling both the base materials, heating conditions are formed so that diffusion after brazing is sufficiently generated according to a preset time. Thereafter, an oxygen welding machine and a silver electrode welding rod are supplied by the fixed mechanical structure to perform 1 to 2 points of welding. In this case, the supply time and the welding time of the electrode are determined by the time set in advance.

In the conventional brazing welding process, the brazing welding by manual operation causes a lot of defective products due to an error caused by a work without a specific standard because the welding rod supply timing and welding time are determined by the five senses of the operator. In particular, in the brazing process, the time to start welding, the welding time and the time to supply the welding rod act as an important factor of the brazing welding, it is difficult to improve the product quality only by the five senses.

In the conventional brazing welding process, the brazing welding by the special machine has a disadvantage that only one or two points of welding points can be performed because of the fixed mechanical structure of the special machine. Thus, it is unsuitable for carrying out brazing welding on products with long lengths and many welding points.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to accurately control the surface temperature of the base material to be brazed by the infrared temperature sensor to control the temperature of the welding machine and the supply timing of the electrode It is to provide a multi-point brazing welding apparatus that can be.

It is another object of the present invention to provide a multi-point brazing welding apparatus that allows a plurality of points to be of high quality welding through precise position control when brazing a product having a plurality of welding points at a narrow interval.

Still another object of the present invention is a multi-point brazing welding capable of multi-point brazing welding by arranging a brazing welding means in a precise position of a product requiring a plurality of welding to a long product, such as a header for refrigeration, air conditioning, and air conditioning It is in providing a device.

The above objects, advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments described with reference to the accompanying drawings, but the accompanying drawings are intended to clearly describe the present invention. The protection scope of the present invention is not limited to the configuration shown in the drawings.

As a feature of the present invention for achieving the object of the present invention as described above, the multi-point brazing welding apparatus according to the present invention and the temperature sensing means for sensing the temperature of the base material to be brazed, X-axis, Y-axis and Z-axis movement Brazing welding means composed of a plurality of torch mounted so as to be possible and arranged to face a point and a welding rod supply member arranged to supply a welding rod to a portion of the base material to be brazed, and temperature data of the base metal measured from the temperature sensing means. Temperature control means for receiving and controlling the temperature of the heat source discharged from the plurality of torch, X-axis transfer means mounted to transfer the brazing welding means to the X-axis, and is equipped to transfer the brazing welding means to the Y-axis 3-axis feeder composed of Y-axis feeder and Z-axis feeder mounted to transfer brazing welding means to Z-axis And, the three-axis feed means comprises a position control means for controlling the three-axis transfer means to transfer the braze welding means in a base material is disposed position.

Hereinafter, with reference to the accompanying drawings, an embodiment of a multi-point brazing welding apparatus according to the present invention will be described in detail.

1 is a plan view of a multi-point brazing welding apparatus according to an embodiment of the present invention, Figure 2 is a side view of a multi-point brazing welding apparatus according to an embodiment of the present invention. In FIG. 2, in order to clarify the positional relationship of the temperature sensing means 90, the illustration of the welding electrode feeder 80 is omitted for convenience. As shown in FIG. 1 and FIG. 2, the base member 14 is formed on the base 10 seated on the base pillar 12.

In the base material placing portion 14, the main pipe 2 of the header for refrigeration, air conditioning, and air conditioning is manufactured according to the embodiment of the present invention. The main pipe 2 is formed in a hollow cylinder shape, and the branch pipe 4 is joined in a state in which the pipes pass through each other at a constant pitch. The jig 16 for fixing the main pipe 2 is mounted on both sides of the base member mounting portion 14. In the embodiment of the present invention, the jig 16 is mounted on both ends, but the jig is further installed at a predetermined position of the base member 14, so that the main pipe 2 can be more reliably fixed. An index motor 17 and a rotating shaft 18 may be further mounted below the base 10. The rotating shaft 18 is axially connected to the index motor 17 to be rotated 180 degrees. Therefore, when welding of the base material located on the right side of the base 10 among the main pipe 2 and the branch pipe 4 is completed based on the drawing of FIG. 2, the base 10 is rotated and positioned on the left side of the base 10. Welding of the base material can be performed.

The conveying means frame 20 is disposed spaced apart from the base 10. On the conveying means frame 20, a Y-axis linear motor guide 42 formed long in the width direction of the main pipe 2 is provided. The Y-axis linear motor block 44 is mounted on the rail of the Y-axis linear motor guide 42. As shown, four Y-axis linear motor blocks 44 are arranged on the bottom surface of the Y-axis moving panel 22 formed long in the longitudinal direction of the main pipe (2). The Y-axis servomotor 40 provides power driven by the servo system to the Y-axis moving panel 22 so that the Y-axis linear motor block 44 moves along the Y-axis linear motor guide 42.

The X axis linear motor guide 31 is provided on the Y axis moving panel 22. The X axis linear motor block 34 is mounted on the rail of the X axis linear motor guide 31. Four X-axis linear motor blocks 34 are disposed on the lower end surface of the X-axis moving panel 24. According to the exemplary embodiment of the present invention, the ball screw 32 may be further installed at the center of the lower surface of the X-axis moving panel 24 for accurate positioning of the X-axis moving panel 24 and the efficient flow of the panel. . The X-axis servo motor 30 provides power driven by the servo system to the X-axis moving panel 24 so that the X-axis linear motor block 34 moves along the X-axis linear motor guide 32.

On the X-axis moving panel 24, the Z-axis frame 26 is formed in a direction perpendicular to the ground. The Z-axis frame 26 is provided with a Z-axis linear motor guide 52. The Z-axis linear motor block 54 is mounted on the Z-axis linear motor guide 52. One or more Z-axis linear motor blocks 54 are mounted to the Z-axis linear motor guide 52 formed in a column shape perpendicular to the ground. The Z axis servomotor 50 provides power driven by the servo system to the Z axis linear motor block 54 such that the Z axis linear motor block 54 moves along the Z axis linear motor guide 52.

A torch fixing cantilever 62 is fixed to the Z-axis linear motor block 54. Accordingly, the torch fixing cantilever 62 has a vertical height determined according to the position of the Z-axis linear motor block 54. At the end of the torch fixing cantilever 62, a torch fixing jig 64 is mounted.

The torch 70 is fixed to the torch fixing jig 64. According to an embodiment of the present invention, four torch 70 are fixed to the torch fixing jig 64 so as to be arranged one by one at an angle of 90 °. The torch 70 is bent in an annular shape and four torches are formed to face one point. The torch sphere 72 is formed at the end of the torch 70 to serve as a heating source for brazing welding.

3 is a perspective view showing a welding rod supply member. The electrode supply member 80 is installed on the electrode supply member support shaft 81. The electrode supply member support shaft 81 is formed on the X-axis moving panel 24. Accordingly, the position of the electrode supply member support shaft 81 is adjusted according to the movement of the X-axis movement panel 24 and the Y-axis movement panel 22.

A welding rod supply nozzle 82 is formed at an end portion of the nozzle mounting tube 84 of the welding rod supply member 80. In the brazing welding process, the welding rod 83 is injected from the welding rod supply nozzle 82. The electrode supply member 80 further includes a nozzle driving cylinder 85 and a cylinder piston 86.

One end of the nozzle position adjusting member 88 is fixed to the cylinder piston 86, and the other end thereof is installed to support the nozzle mounting pipe 84 from the bottom. The nozzle position adjusting member 88 is composed of a block disposed in parallel with the longitudinal direction of the cylinder piston 86 and a block for supporting the nozzle mounting pipe 84 at an angle of about 120 ° with the block. According to this configuration, the movement of the cylinder piston 86 is transmitted to the nozzle position adjusting member 88, and the movement of the nozzle position adjusting member 88 continuously adjusts the position relative to the base material of the welding rod supply nozzle 82. do.

The temperature sensing means 90 is disposed so as to face the part where the main pipe 2 and the branch pipe 4 of the header for freezing, air conditioning and air conditioning are processed according to the embodiment of the present invention. Temperature sensing means 90 is composed of an infrared temperature sensor. The infrared temperature sensor is fixed on the X-axis moving panel 24 to face the welded portion of the base material, or is fixed to the Z-axis frame 26.

The temperature sensing means 90 transmits a signal of the sensed temperature to the temperature control means 92. The temperature control means 92 controls the temperature of the flame discharged from the torch 70 by comparing the transmitted temperature value with a preset and stored reference temperature value. In addition, the temperature sensing means 90 adjusts the timing at which the electrode should be supplied from the electrode supply member 80 based on the sensed temperature. That is, a welding rod made of silver lead is supplied only when the temperature of the base material rises above an appropriate standard. In order to perform brazing welding according to an embodiment of the present invention, the filler metal is 450 ° C. or more and an appropriate temperature below the melting point of the base material is sensed. In this case, the electrode 83 is sprayed from the electrode supply nozzle 82.

In the above-described multi-point brazing welding apparatus according to the embodiment of the present invention, the configuration in which the X-axis moving panel 24 is installed on the Y-axis moving panel 22 is disclosed. Y-axis moving panel can be installed in the

Hereinafter, the operation of the multi-point brazing welding apparatus according to the embodiment of the present invention having the above configuration will be described in detail.

In order to perform brazing welding, the temperature of the joint of the main pipe 2 and the branch pipe 4 must be above a certain temperature. In order to perform the preheating of the brazing welding process, first, the position of the torch 70 is controlled so that the torch 70 is directed to any one of multiple coupling points of the main pipe 2 and the branch pipe 4 formed long. do.

In order to control the position of the torch 70, the servo system according to the present invention transmits driving signals to the X-axis servo motor 30, the Y-axis servo motor 40, and the Z-axis servo motor 50. According to the transmitted drive signal, the X-axis servo motor 30 transfers the X-axis moving panel 24 in the longitudinal direction of the base material. As the X-axis movement panel 24 moves, the torch 70 moves in parallel to the longitudinal direction of the main pipe 2.

The Y-axis servo motor 40 transfers the Y-axis moving panel 22 in the width direction of the base material. That is, the Y-axis servo motor 40 transfers the Y-axis moving panel 22 in a direction perpendicular to the moving direction of the X-axis moving panel 24 on a plane horizontal to the ground. As the Y-axis movement panel 22 moves, the torch 70 moves in the Y-axis direction of FIG. 1.

The Z-axis servo motor 50 moves the Z-axis linear motor block 54 in a direction perpendicular to the horizontal plane. As a result, the torch fixing cantilever 62 fixed to the Z-axis linear motor block 54 is moved, and the position in the direction perpendicular to the horizontal plane of the four torches 70 continuously facing one point is controlled.

As the X-axis servo motor 30, the Y-axis servo motor 40, and the Z-axis servo motor 50 are driven, the four torches 70 face the parts where the main pipe 2 and the branch pipe 4 are assembled. Position is controlled. Thereafter, the portion where the main pipe 2 and the branch pipe 4 are assembled for brazing welding is preheated. Since the electrode is not supplied in the pre-heating process, the electrode supply nozzle 82 is relatively further spaced apart from the joint of the main pipe 2 and the branch pipe 4 in the Y-axis direction of FIG. This is because at the stage of preheating it is desirable that the part of the electrode supply nozzle 82 is not affected by the heat of the flame supplied from the torch 70.

The temperature sensing means 90 continuously detects the temperature of the base metal at a predetermined time interval during the preheating process. The temperature sensing unit 90 transmits a signal for the sensing temperature so that the temperature control unit 92 controls the temperature of the flame supplied from the torch 70 when the temperature of the base material rises above a predetermined reference value. The temperature control means 92 which receives a signal from the temperature sensing means 90 that the temperature of the base material has reached a temperature higher than or equal to the reference value controls the temperature of the flame supplied from the torch 70.

In addition, when it is determined that the temperature of the base material is an appropriate temperature for brazing welding in order to perform the brazing welding process, the nozzle driving cylinder 85 is driven to move the cylinder piston 86 in the base material direction. Accordingly, the electrode supply nozzle 82 is conveyed toward the portion to which the main pipe 2 and the branch pipe 4 are to be joined. As the electrode 83 is sprayed toward the joint of the base material from the electrode supply nozzle 82 transferred as described above, one point of the main pipe 2 and the branch pipe 4 is brazed.

4 is a perspective view showing a part of a header for refrigeration, air conditioning, and heating and heating according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along the line A-A of FIG. In the header for refrigeration, air conditioning, and heating and cooling shown in Fig. 4, a plurality of branch pipes 4 are brazed and welded to the main pipe 2 formed long. In FIG. 4, only four branch pipes 4 are shown, but the header for refrigeration, air conditioning, and heating and heating according to the embodiment of the present invention is substantially formed with a longer main pipe 2 and four branch pipes 4. It is formed in plurality of the above. As shown in FIG. 5, a brazing weld 6 brazed according to an embodiment of the present invention is formed between the main pipe 2 and the branch pipe 4.

As described above, after completing the brazing welding process at one point, the servo system according to an embodiment of the present invention is the X-axis servo motor 30, Y-axis servo motor 40 and Z-axis servo motor 50 The torch 70 is moved to another position of the base material to be welded by driving. According to the present invention, the preheating and brazing welding process is again performed by the moved torch 70, and as a result, brazing welding at multiple points can be performed. In this case, the temperature of the base material is sensed during brazing welding for each point to control the temperature of the base material, the electrode supply time point, the electrode supply time, and the like.

The embodiments described above are merely to describe preferred embodiments of the present invention, the scope of the present invention is not limited to the described embodiments, those skilled in the art within the spirit and claims of the present invention It will be understood that various changes, modifications, or substitutions may be made thereto, and such embodiments are to be understood as being within the scope of the present invention.

According to the present invention, brazing welding of multiple points can be carried out at a short distance to a long member such as a header for freezing, air conditioning, and air conditioning. And unlike the manual brazing welding, by performing the brazing welding through accurate temperature sensing, the defect of the product is significantly reduced. In addition, through the temperature sensed by the temperature control means consisting of an infrared temperature sensor has a significant effect that can automatically control the base material temperature measurement, welding rod supply time, welding time setting, and the like.

Claims (8)

Temperature sensing means for sensing a temperature of the base metal to be brazed; Brazing welding means comprising a plurality of torch mounted to be movable in X, Y and Z axes and disposed to face one point, and a welding rod supply member arranged to supply a welding rod to a portion of the brazed base metal; Temperature control means for receiving temperature data of the base material measured from the temperature sensing means and controlling a temperature of heat sources discharged from the plurality of torches; X-axis transfer means mounted to transfer the brazing welding means to the X-axis, Y-axis transfer means mounted to transfer the brazing welding means to the Y-axis, and the brazing welding means to transfer to the Z-axis A three-axis transfer means composed of a Z-axis transfer means mounted so as to be mounted; And the three-axis transfer means includes position control means for controlling the three-axis transfer means to transfer the brazing welding means to a position where the base material is disposed. The method of claim 1, wherein the X-axis transfer means, An X-axis linear motor guide installed in the longitudinal direction of the base material; An X axis linear motor block mounted on the X axis linear motor guide; The X-axis linear motor block is fixed to the lower surface multi-point brazing welding apparatus comprising an X-axis moving panel capable of conveying in the longitudinal direction of the base material. The method of claim 2, wherein the Y-axis transfer means, A Y-axis linear motor guide provided in the width direction of the base material; A Y-axis linear motor block mounted on the Y-axis linear motor guide; The Y-axis linear motor block is fixed to the lower surface of the multi-point brazing welding apparatus, characterized in that it comprises a Y-axis moving panel which can be transferred in the width direction of the base material, the X-axis linear motor guide is installed on the upper surface. The method of claim 3, wherein the Z-axis transfer means, A Z-axis linear motor guide installed on the X-axis moving panel; And a Z axis linear motor block mounted on the Z axis linear motor guide. The method of claim 4, wherein the Z-axis linear motor block, A multi-point brazing welding device, characterized in that the torch fixing cantilever for fixing the plurality of torch to the end. The method according to any one of claims 2 to 5, wherein the position control means, An X-axis servo motor for driving the X-axis moving panel to control its position; A Y-axis servo motor for controlling the position by driving the Y-axis moving panel; And a Z-axis servo motor for controlling the position by driving the Z-axis moving panel. The welding rod supply member according to any one of claims 2 to 5, A nozzle mounting tube for guiding the transfer of the welding rod; And a welding rod supply nozzle formed at an end of the nozzle mounting tube to spray the welding rod. The method of claim 7, wherein the electrode supply member, And a nozzle driving cylinder for driving the nozzle mounting tube to control the relative position of the electrode supply nozzle with respect to the base material.

Images