Intelligent brazing equipment for aluminum heat exchanger

Abstract

The utility model relates to intelligent brazing equipment for an aluminum heat exchanger, which comprises a rack, a three-dimensional transmission device, an induction brazing welding machine, a product positioning tool and a cooling device, and is characterized in that the intelligent brazing equipment is also provided with a dust removal device, the three-dimensional transmission device and the product positioning tool are both mounted on the rack, the induction brazing welding machine is mounted on the three-dimensional transmission device, and the product positioning tool is mounted on the cooling device. A welded aluminum heat exchanger is installed on the product positioning tool, and the three-dimensional conveying device, the induction brazing welding machine, the product positioning tool, the cooling device and the dust removal device are all connected with the control system. The method has the following advantages and effects that the welding efficiency is improved, carbon emission is reduced, the method is more friendly to operators, the welding process is more stable and controllable, the welding environment is safer, and alignment of the aluminum heat exchanger and the product connecting pipe is more accurate and convenient to adjust.

Description

Technical Field

[0001] The present application relates to an intelligent brazing device for aluminum heat exchangers, which is mainly suitable for induction brazing of aluminum heat exchangers and product pipes. Background Art

[0002] The aluminum microchannel heat exchanger has a lightweight structure and is not affected by electrochemical corrosion. It is designed with energy efficiency and reduced refrigerant charge as the driving concept. Microchannel heat exchangers are widely used in residential and commercial air-conditioning systems. Traditional microchannel heat exchangers are welded by tunnel furnace atmosphere protection welding and then flame welding a product pipe. Flame welding is inefficient and the operator's working environment is poor. A large amount of smoke is generated during the welding process, which poses a great threat to the operator's health. In addition, open flame operations have a high risk factor and a low degree of automation. Summary of the invention

[0003] The technical problem solved by the present application is to overcome the above-mentioned deficiencies in the prior art and to provide a relatively safe, reliable and intelligently controlled intelligent brazing device for aluminum heat exchangers.

[0004] The technical solution adopted by the present application to solve the above technical problems is: an intelligent brazing equipment for aluminum heat exchangers, including a frame, a three-dimensional transmission device, an induction brazing welding machine, a product positioning tool, and a cooling device, which is characterized in that: a dust removal device is also provided, the three-dimensional transmission device and the product positioning tool are both installed on the frame, the induction brazing welding machine is installed on the three-dimensional transmission device, the aluminum heat exchanger to be welded is installed on the product positioning tool, and the three-dimensional transmission device, the induction brazing welding machine, the product positioning tool, the cooling device, the dust removal device and the control system are all connected. The present application improves the safety and reliability of the present application through automatic induction welding; improves the environmental quality and prevents environmental pollution through a dust removal device; and improves the degree of automation through a control system.

[0005] The product positioning tooling described in the present application is provided with a product installation frame, an arc-shaped groove for placing the product at the bottom, a product clamping and clamping component, a product pipe positioning component, and a product upper positioning frame. The upper product positioning frame is slidably installed on the frame forward and backward, the upper part of the product installation frame is hinged on the upper product positioning frame, and the rear side of the product installation frame leans against the frame. The lower part of the product installation frame is provided with an arc-shaped groove for placing the product at the bottom, and the bottom of the aluminum heat exchanger matches the arc-shaped groove for placing the product at the bottom. The product clamping and clamping component is installed on the upper product positioning frame and matches the upper part of the aluminum heat exchanger. The product clamping and clamping component is connected to the control system and is used to clamp or release the upper part of the aluminum heat exchanger. The product pipe positioning component is provided with a vertical pole, a front and rear adjustment rod, a left and right and angle adjustment rod, the vertical pole is installed on the upper product positioning frame, the front and rear adjustment rod is installed on the vertical pole, the left and right and angle adjustment rods are rotatably installed on the front and rear adjustment rods, and the left and right and angle adjustment rods are provided with positioning pin mounting holes. The present application makes the aluminum heat exchanger accurately positioned and reliably fixed by setting the above-mentioned product installation frame, placing an arc groove at the bottom of the product, and setting the product clamping and clamping parts. By setting the positioning parts of the product pipe, the positioning pin can be adjusted in three dimensions and in angle relative to the aluminum heat exchanger.

[0006] The center line of the positioning pin installation hole is on the same plane as the center surface of the aluminum heat exchanger and is perpendicular to the center axis of the bottom of the aluminum heat exchanger. After the product pipe is mounted on the aluminum heat exchanger, the lower part of the positioning pin passes through the positioning pin installation hole and is inserted into the pipe hole, so that the center line of the product pipe is on the same plane as the center surface of the aluminum heat exchanger and is perpendicular to the center axis of the bottom of the aluminum heat exchanger, so that the pipe of the product of the application is accurately aligned with the aluminum heat exchanger and is easy to adjust, and has a wide range of applications.

[0007] There are two sets of three-dimensional transmission devices and induction brazing machines described in the present application. Each set of aluminum heat exchangers is provided with two product pipes. Two sets of product pipe positioning components are provided on the product positioning tooling. Each set of product pipe positioning components cooperates with the corresponding product pipes. Each set of three-dimensional transmission devices is installed with an induction brazing machine, and each set of induction brazing machines cooperates with the corresponding product pipes.

[0008] The dust removal device of the present application is provided with a dust removal duct, and the suction port of the dust removal duct is located in the center behind the two sets of induction brazing welding machines, which is convenient for extracting the smoke and dust of the two sets of induction brazing welding machines to the greatest extent and optimize the working environment.

[0009] Compared with the prior art, the present application has the following advantages and effects: improved welding efficiency, reduced carbon emissions, more operator-friendly, more stable and controllable welding process, safer welding environment, more accurate and convenient adjustment of the alignment of the aluminum heat exchanger and the product pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1Schematic diagram of the structure (top view) of the intelligent brazing equipment for aluminum heat exchanger according to an embodiment of the present application.

[0011] Figure 2 yes Figure 1 Schematic diagram of the rear view without the dust removal device.

[0012] Figure 3 yes Figure 2 Schematic diagram of the left side.

[0013] Figure 4 It is a schematic diagram of the product installation framework structure of an embodiment of the present application.

[0014] Figure 5 It is an enlarged schematic diagram of the alignment relationship of the product pipe of the aluminum heat exchanger of the present application after being engaged and clamped by the positioning pin.

[0015] In the figure: frame 1, upper product positioning frame 11, three-dimensional transmission device 2, aluminum heat exchanger (processed product) 3, product pipe (part to be welded) 31, pipe hole 311 for the product pipe to be connected with the lower part of the positioning pin, aluminum heat exchanger center surface 32, aluminum heat exchanger bottom center axis 33, product positioning tool 4, product installation frame 41, arc groove 411 for placing the bottom of the product, product clamping clamping part 42, product pipe positioning part 43, vertical pole 431, front and rear adjustment rod 432, left and right and angle adjustment rod 433, positioning pin installation hole 4331, product upper positioning frame 44, dust removal device 5, dust removal pipeline 51 of dust removal device, cooling device 6, water pipe 61 of cooling device, induction brazing welding machine 7, induction coil 71, control system 8. DETAILED DESCRIPTION

[0016] The present application is further described in detail below with reference to the accompanying drawings and examples. The following examples are explanations of the present application and the present application is not limited to the following examples. Figure 1 Below, after refers to Figure 1 Above, left refers to Figure 1 The left side of Figure 1 Right side.

[0017] See also Figure 1~Figure 5, the embodiment of the present application is provided with a frame 1, a three-dimensional transmission device 2, an aluminum heat exchanger 3, a product positioning tool 4, a dust removal device 5, a cooling device 6, an induction brazing welding machine 7, and a control system 8. The three-dimensional transmission device 2, the product positioning tool 4, and the control system 8 (such as a PLC+operation screen, not shown in the figure) are all installed on the frame 1. The induction brazing welding machine 7 is installed on the three-dimensional transmission device 2 and can move forward and backward, left and right, up and down and is connected to the control system 8. The aluminum heat exchanger 3 is placed on the product positioning tool 4. Through the positioning function of the product positioning tool 4, the position of the product is consistent each time. The dust removal device 5 is connected to the frame 1 through the dust removal pipe 51 to extract the smoke generated during the welding process to protect the health of the staff. The cooling device 6 is connected to the induction brazing welding machine 7 through the water pipe 61 to reduce the heat generated during the operation of the induction brazing welding machine, so that the induction brazing welding machine 7 is always in a constant temperature range, and the welding is more stable. Through the above-mentioned configuration, the present application replaces the conventional flame welding equipment with an induction brazing machine, greatly reduces welding pollution through the dust removal device 5, and makes the induction welding machine work in good condition through the cooling device 6, thereby improving production efficiency and welding stability.

[0018] The three-dimensional transmission device 2 of the present application is installed on the frame 1 through a motion guide rail, and the control system 8 controls the three-dimensional transmission device 2 to move appropriately and timely. The staff only needs to input the points to be welded on the operation screen of the control system 8 (not shown in the figure), and the PLC will process and transform the data and transmit it to the three-dimensional transmission device 2. The three-dimensional transmission device 2 will drive the induction brazing welding machine 7 and the induction coil 71 on the induction brazing welding machine 7 to move to the position. When the aluminum heat exchanger 3 fixed on the product positioning tool 4 and its product pipe 31 correspond to the induction coil 71, the induction brazing welding machine 7 starts to start welding. This embodiment realizes the welding and fixing of different models of products (aluminum heat exchangers to be welded) through the product pipe positioning component 43, and the fixing is simple and convenient.

[0019] The product positioning fixture 4 is mainly composed of a product installation frame 41, a product clamping and clamping component 42, a product pipe positioning component 43, and a product upper positioning frame 44. The product upper positioning frame 44 is installed on the frame 1 through a slide rail and can move in the front and rear direction to adjust the inclination angle of the product installation frame 41. The product installation frame 41 is made of aluminum alloy profiles. The upper part of the product installation frame 41 is hung (hinged) on the product upper positioning frame 44, and the rear side is against the frame 1 (see Figure 3), the product upper positioning frame 44 can be adjusted in the front-to-back direction to change the inclination angle of the product installation frame 41 hung thereon accordingly. The product installation frame 41 as a whole supports the aluminum heat exchanger 3 and the product pipe 31 thereon, so that the aluminum heat exchanger 3 maintains an accurate overall welding position. The lower part of the product installation frame 41 is provided with an arc-shaped groove 411 for placing the bottom of the product. The bottom of the aluminum heat exchanger is placed on the arc-shaped groove 411 for placing the bottom of the product and will not fall off. The product clamping clamping component 42 (a special case of the existing pneumatic clamp, which is usually in an open state. When the product is placed on the product installation frame 41 and accurately positioned, it is closed and clamped on the upper part of the product through the control system 8 switch. After welding is completed, it is opened through the control system switch to facilitate the removal of the processed product) is arranged on the upper part of the product positioning tool 4, and is used to clamp the upper part of the product so that the product does not move. The product pipe positioning component 43 is used to realize the welding angle control of the product pipe 31, so that the aluminum heat exchanger 3 and the product pipe 31 on it are aligned at an angle, see Figure 5 .

[0020] The product pipe positioning component 43 includes a vertical rod (adjusting the height of the positioning pin) 431, a front-to-back adjustment rod (extending in the front-to-back direction to adjust the front-to-back position of the positioning pin) 432, and a left-right and angle adjustment rod (extending in the left-to-right direction to adjust the left-to-right position of the positioning pin) 433. The product pipe positioning component 43 forms a three-dimensional connection limiter. The vertical rod 431 is set on the upper positioning frame 44 of the product, the front-to-back adjustment rod 432 is installed on the vertical rod 431, and the left-to-right and angle adjustment rod 433 is rotatably installed on the front-to-back adjustment rod 432. The left-to-right position and the angle of the positioning pin installation hole 4331 relative to the central surface 32 of the aluminum heat exchanger can be adjusted. When the product pipe 31 is mounted on the aluminum heat exchanger 3, the product pipe positioning component 43 is adjusted to achieve that the center line of the positioning pin installation hole 4331 is in the same plane as the center surface 32 of the aluminum heat exchanger and is perpendicular to the center axis 33 of the bottom of the aluminum heat exchanger. Since the positioning pin is mounted on the positioning pin installation hole 4331 and inserted into the pipe hole 311 of the product pipe 31, it is coaxial with the product pipe 31. Therefore, the center line of the product pipe 31 is in the same plane as the center surface 32 of the aluminum heat exchanger and is perpendicular to the center axis 33 of the bottom of the aluminum heat exchanger, so that the product pipe 31 of the present application is accurately aligned with the aluminum heat exchanger 3 and is convenient to adjust, and has a wide range of applications. The positioning pin described in the present application is cylindrical in the middle and lower parts and cooperates with the positioning pin installation hole 4331. The lower part of the positioning pin passes through the positioning pin installation hole 4331 and is inserted into the pipe hole 311, and its head is stuck above the positioning pin installation hole 4331.

[0021] There are two sets of the three-dimensional transmission device 2 and the induction brazing welding machine 7. Each set of the aluminum heat exchanger 3 is provided with two product pipes 31. The product positioning tooling 4 is provided with two sets of product pipe positioning components 43. Each set of product pipe positioning components 43 cooperates with the corresponding product pipe 31. Each set of the three-dimensional transmission device 2 is installed with a set of induction brazing welding machine 7, and each set of induction brazing welding machine 7 cooperates with the corresponding product pipe 31.

[0022] The dust removal device 5 adopts an external collection bag to extract the smoke generated during the welding process through a fan and a dust removal pipe 51. The suction port of the dust removal pipe 51 is placed in the center near the rear of the two sets of induction brazing welding machines 7, which can extract the smoke of the two sets of induction brazing welding machines 7 to the greatest extent, optimize the welding environment, and facilitate regular cleaning of the smoke collection bag.

[0023] The three-dimensional transmission device 2, cooling device 6, induction brazing welding machine 7 and control system 8 of the present application are all prior art and will not be described in detail.

[0024] In specific application, first adjust the front and rear position of the upper positioning frame 44 of the product for the aluminum heat exchanger to be processed, so that the product installation frame 41 has an appropriate inclination angle; then adjust the position of the product pipe positioning component 43, so that the center line of the positioning pin installation hole 4331 and the center surface of the aluminum heat exchanger 3 are on the same plane and perpendicular to the bottom center axis of the aluminum heat exchanger 3; then insert the lower part of the positioning pin through the positioning pin installation hole 4331 into the pipe hole 311, so that the center line of the product pipe 31 and the center surface 32 of the aluminum heat exchanger are on the same plane and perpendicular to the bottom center axis 33 of the aluminum heat exchanger; manually The product is placed on the product positioning tooling 4, and then the upper part of the aluminum heat exchanger is clamped with the product clamping clamping component 42 to ensure that the position of each product on the workbench is consistent. Then, the welding button is started on the operation screen of the control system 8 with one click. The control system 8 controls the three-dimensional transmission device 2 to drive the induction brazing welding machine 7 to move into place to complete the welding of the entire product. There is no open flame during the welding process, which ensures the safety of the welding process to the greatest extent. The welding quality is not affected by human factors, and the influence of employees on the welding quality is minimized to the greatest extent, ensuring the stability of welding quality, reducing the labor intensity of employees, and preventing pollution of the operating environment.

Claims

1. An intelligent brazing equipment for aluminum heat exchangers, comprising a frame, a three-dimensional transmission device, an induction brazing welding machine, a product positioning tool, and a cooling device, characterized in that: A dust removal device is also provided. The three-dimensional transmission device and the product positioning tooling are all installed on the frame. The induction brazing welding machine is installed on the three-dimensional transmission device. The welded aluminum heat exchanger is installed on the product positioning tooling. The three-dimensional transmission device, the induction brazing welding machine, the product positioning tooling, the cooling device, the dust removal device and the control system are all connected.

2. According to claim 1, the intelligent brazing equipment for aluminum heat exchangers is characterized by: The product positioning tooling is provided with a product installation frame, an arc groove for placing the product at the bottom, a product clamping and clamping component, a product pipe positioning component, and a product upper positioning frame. The upper product positioning frame is slidably installed on the frame forward and backward, the upper part of the product installation frame is hinged on the upper product positioning frame, and the rear side of the product installation frame leans against the frame. The lower part of the product installation frame is provided with an arc groove for placing the product at the bottom, and the bottom of the aluminum heat exchanger matches the arc groove for placing the product at the bottom. The product clamping and clamping component is installed on the upper product positioning frame and matches the upper part of the aluminum heat exchanger. The product clamping and clamping component is connected to the control system and is used to clamp or release the upper part of the aluminum heat exchanger. The product pipe positioning component is provided with a vertical pole, a front and rear adjustment rod, a left and right and angle adjustment rod, the vertical pole is installed on the upper product positioning frame, the front and rear adjustment rod is installed on the vertical pole, the left and right and angle adjustment rods are rotatably installed on the front and rear adjustment rods, and the left and right and angle adjustment rods are provided with positioning pin mounting holes.

3. According to claim 2, the intelligent brazing equipment for aluminum heat exchangers is characterized by: The center line of the positioning pin installation hole is on the same plane as the center plane of the aluminum heat exchanger and is perpendicular to the center axis of the bottom of the aluminum heat exchanger.

4. The intelligent brazing equipment for aluminum heat exchangers according to claim 2 is characterized in that: There are two sets of the three-dimensional transmission device and induction brazing welding machine. Each set of aluminum heat exchanger is provided with two product pipes. The product positioning tooling is provided with two sets of product pipe positioning components. Each set of product pipe positioning components cooperates with the corresponding product pipe. Each set of three-dimensional transmission device is installed with an induction brazing welding machine, and each set of induction brazing welding machine cooperates with the corresponding product pipe.

5. According to claim 1, the intelligent brazing equipment for aluminum heat exchangers is characterized by: The dust removal device is provided with a dust removal duct, and the suction port of the dust removal duct is located in the center behind the two sets of induction brazing welding machines.

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