Intelligent production line for outdoor units of air conditioners

Abstract

The invention discloses an air conditioner outdoor unit intelligent production line which comprises an assembly line and a material supply line, the assembly line comprises a plurality of assembly stations, any assembly station is provided with a first robot, and the first robot automatically completes work tasks of the assembly stations; the multiple assembly stations are sequentially arranged in the conveying direction of the first conveying line, and the first conveying line is used for conveying materials; the material supply line comprises a material bin, materials needed by any assembly station are placed in the material bin with a material frame as a storage unit, and a plurality of material placing areas are arranged in the material bin. The second conveying line is used for conveying material frames; the second robot is used for transferring the material frame between the material bin and the second conveying line; the material frame is transferred between the first conveying line and the second conveying line. According to the production line, automatic material supply and automatic assembly of all procedures can be achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent manufacturing, and particularly to an intelligent production line for air conditioner outdoor units. Background Art

[0002] The assembly of an air conditioner outdoor unit involves multiple processes, such as the compressor installation process, the gas-liquid separator installation process, the outdoor heat exchanger installation process, etc. There is a conventional outdoor unit production line that realizes semi-automatic assembly by relying on robots to assist workers. When the materials required for each process are out of stock, manual feeding is needed, resulting in low production efficiency. In addition, multiple processes are arranged in the same floor space area, occupying a large site.

[0003] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0004] In view of the problems pointed out in the background art, the present invention proposes an intelligent production line for air conditioner outdoor units, which realizes automatic material replenishment and automatic assembly of each process, and improves production efficiency.

[0005] To achieve the above invention objectives, the present invention is implemented by the following technical solutions:

[0006] In some embodiments of the present application, an intelligent production line for air conditioner outdoor units is provided, including an assembly line and a material replenishment line. The assembly line includes: a plurality of assembly stations, and a first robot is configured on any one of the assembly stations to automatically complete the work tasks of the assembly station; the plurality of assembly stations are arranged in sequence along the conveying direction of a first conveyor line, and the first conveyor line is used to convey materials; the material replenishment line includes: a material warehouse, and the materials required for any one of the assembly stations are placed in the material warehouse with material frames as storage units, and a plurality of material placement areas are provided in the material warehouse; a second conveyor line is used to convey the material frames; a second robot is used to transfer the material frames between the material warehouse and the second conveyor line; the material frames are transferred between the first conveyor line and the second conveyor line.

[0007] Advantageous Effects: The intelligent production line for outdoor units realizes automatic assembly of each assembly process by the assembly line and realizes automatic replenishment of the materials required for each assembly process by the material replenishment line. The automatic operations of the assembly line and the material replenishment line involve the coordinated use of different types of robots and vision devices. In this way, automatic material replenishment for outdoor units and automatic assembly of each process are realized, and production efficiency is improved.

[0008] The assembly line and the material replenishment line are relatively independent and cooperate with each other to realize the intelligence of the entire production line, without manual intervention and with a high degree of automation. Description of the Drawings

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 It is a layout schematic diagram of an intelligent production line for an air conditioner outdoor unit according to some embodiments;

[0011] Figure 2 It is another layout schematic diagram of an intelligent production line for an air conditioner outdoor unit according to some embodiments;

[0012] Figure 3 It is another layout schematic diagram of an intelligent production line for an air conditioner outdoor unit according to some embodiments;

[0013] Figure 4 It is a layout schematic diagram of an assembly line according to some embodiments;

[0014] Figure 5 It is a layout schematic diagram of a material supply line according to some embodiments;

[0015] Figure 6 It is another layout schematic diagram of a material supply line according to some embodiments;

[0016] Figure 7 It is a structural diagram of an assembly station and a first robot according to some embodiments;

[0017] Figure 8 It is a structural diagram of a gripping robot according to some embodiments;

[0018] Figure 9 It is a structural diagram of a screw installation robot according to some embodiments;

[0019] Figure 10 It is a cross-sectional view of a screw installation fixture according to some embodiments;

[0020] Figure 11 It is a structural diagram of a heat exchanger installation robot according to some embodiments;

[0021] Figure 12 It is a partial structural diagram of a heat exchanger fixture according to some embodiments;

[0022] Figure 13 It is a structural diagram of a material box and an outdoor heat exchanger according to some embodiments;

[0023] Figure 14A structural diagram of a two-headed robot according to some embodiments;

[0024] Figure 15 A structural diagram of a welding robot according to some embodiments;

[0025] Figure 16 A structural diagram of a gas detection robot according to some embodiments;

[0026] Figure 17 A layout diagram of an indoor unit intelligent production line according to some embodiments;

[0027] Figure 18 A structural diagram of a heat exchanger spraying station according to some embodiments;

[0028] Figure 19 A structural diagram of an indoor heat exchanger according to some embodiments;

[0029] Figure 20 A structural diagram of a fin according to some embodiments;

[0030] Figure 21 A structural diagram of a capsule part according to some embodiments;

[0031] Figure 22 A schematic diagram of a heat exchanger production line according to some embodiments;

[0032] Figure 23 A partial structural diagram of a fin access device according to some embodiments;

[0033] Figure 24 A position diagram of a lifting support plate in the stock state according to some embodiments;

[0034] Figure 25 A position diagram of a lifting support plate in the material-taking state according to some embodiments;

[0035] Figure 26 A structural diagram of a lifting support plate according to some embodiments;

[0036] Figure 27 A structural diagram of a offline robot according to some embodiments;

[0037] Figure 28 A structural diagram of an offline fixture according to some embodiments;

[0038] Figure 29 A structural diagram of a second offline clamping member according to some embodiments;

[0039] Figure 30 is Figure 29 the enlarged view of part A in

[0040] Figure 31 Partial structural diagram of the end plate installation device according to some embodiments;

[0041] Figure 32 Conveying state diagram of the fin stack on the short plate installation device according to some embodiments;

[0042] Figure 33 Schematic position diagram of the lifting member on the end plate installation device according to some embodiments;

[0043] Figure 34 Structural diagram of the end plate installation robot according to some embodiments;

[0044] Figure 35 For Figure 34 Connection schematic diagram at position B in

[0045] Figure 36 State diagram of the end plate fixture clamping the end plate part according to some embodiments;

[0046] Figure 37 Structural diagram of the heat exchanger according to some embodiments;

[0047] Figure 38 Structural diagram of the intubation robot according to some embodiments;

[0048] Figure 39 Structural diagram of the intubation fixture according to some embodiments;

[0049] Figure 40 Structural diagram of the transfer fixture according to some embodiments;

[0050] Figure 41 Structural diagram of the nitrogen filling device according to some embodiments;

[0051] Figure 42 Structural diagram of the intubation robot according to some embodiments;

[0052] Figure 43 Structural diagram of the pipeline gripper according to some embodiments;

[0053] Figure 44 One of the connection diagrams of the nitrogen filling docking part and the pipeline part according to some embodiments;

[0054] Figure 45 For Figure 44 C-C cross-sectional view in

[0055] Figure 46 Another connection diagram of the nitrogen filling docking part and the pipeline part according to some embodiments;

[0056] Figure 47 Connection diagram of the elastic member according to some embodiments. Detailed Implementation Modes

[0057] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0058] In some embodiments of the present application, an air conditioner is provided, which executes the refrigeration or heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The low-temperature and low-pressure refrigerant enters the compressor, and the compressor compresses it into a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0059] The outdoor unit of the air conditioner includes a compressor and an outdoor heat exchanger, and the indoor unit of the air conditioner includes an indoor heat exchanger. The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in the cooling mode.

[0060] The outdoor unit of the air conditioner includes a housing, a compressor, a gas-liquid separator, an outdoor heat exchanger, a piping assembly, an outdoor fan, etc. A middle partition is provided in the inner cavity of the housing, and the middle partition divides the inner cavity of the housing into two cavities arranged left and right. The compressor and the gas-liquid separator are arranged in one cavity, and the outdoor heat exchanger and the outdoor fan are arranged in the other cavity.

[0061] In some embodiments of the present application, an intelligent production line for the outdoor unit of an air conditioner is provided, including an assembly line 100. Figure 4 is a layout schematic diagram of the assembly line 100. The assembly line 100 is configured to automatically assemble the components that make up the outdoor unit.

[0062] The assembly line 100 includes a plurality of assembly stations 170. A first robot 110 is configured on any assembly station 170, and the first robot 110 is configured to automatically complete the work tasks of the assembly station 170. The type and quantity of the first robot 110 on any assembly station 170 are specifically selected according to the work tasks of the assembly station 170.

[0063] The assembly line 100 further includes a first conveyor line 120. Refer to Figure 1 , a plurality of assembly stations 170 are arranged in sequence along the conveying direction of the first conveyor line 120, and the first conveyor line 120 is configured to convey materials. The materials are the materials required for each assembly station 170.

[0064] For example, the assembly line 100 includes a compressor installation station I-01, a gas-liquid separator installation station I-02, a first screw fixing station I-03, an outdoor heat exchanger installation station I-04, a middle partition installation station I-05, a left side plate installation station I-06, a piping assembly installation station I-07, a welding auxiliary manual station I-08, a welding station I-09, an outdoor fan installation station I-10, an airtightness detection station I-11, a evacuation and filling station I-12, a commodity inspection station I-13, a joint disassembly station I-14, an automatic halogen inspection station I-15, a rear cover assembly installation station I-16, a rear cover protection net installation station I-17, a bottom bracket installation station I-18, a second screw fixing station I-19, and an automatic packaging station I-20. The above installation stations are arranged in sequence along the material conveying direction of the first conveyor line 120.

[0065] The compressor installation station I-01 is configured to pre-position and install the compressor. The gas-liquid separator installation station I-02 is configured to pre-position and install the gas-liquid separator. The first screw fixing station I-03 is configured to screw-fasten the compressor and the gas-liquid separator. The outdoor heat exchanger installation station I-04 is configured to pre-position and install the outdoor heat exchanger. The middle partition installation station I-05 is configured to fixedly install the middle partition. The left side plate installation station I-06 is configured to fixedly install the left side plate. The piping assembly installation station I-07 is configured to install the piping assembly. The welding auxiliary manual station I-08 is configured to fill helium into the piping to prepare for subsequent piping welding. The welding station I-09 is configured to weld the piping interfaces. The outdoor fan installation station I-10 is configured to fixedly install the outdoor fan. The airtightness detection station I-11 is configured to detect the helium concentration at the welded piping interfaces to check whether the welded joints are air-leaking. The evacuation and filling station I-12 is configured to evacuate the refrigerant pipe and fill it with refrigerant. The joint disassembly station I-14 is configured to disassemble the end joints of the refrigerant pipe. The automatic halogen inspection station I-15 is configured to conduct halogen inspection inside the refrigerant pipe. The rear cover assembly installation station I-16 is configured to fixedly install the rear cover. The rear cover protection net installation station I-17 is configured to fixedly install the rear cover protection net. The bottom bracket installation station I-18 is configured to pre-position and install the bottom bracket. The second screw fixing station I-19 is configured to screw-fix the bottom bracket. The automatic packaging station I-20 is configured to perform outer packaging on the machine body.

[0066] For example, the first robot 110 at the compressor installation station I-01 and the gas-liquid separator installation station I-02 selects a clamping robot 111. Figure 8It is a structural diagram of the picking robot 111. The outer shells of the compressor and the gas-liquid separator are cylindrical, and the gripper of the picking robot 111 is used to grasp the cylindrical outer shell.

[0067] For example, the first robot 110 at the first screw fixing station I-03, the joint disassembly station I-14, and the second screw fixing station I-19 selects the screw installation robot 112. Figure 9 It is a structural diagram of the screw installation robot 112, Figure 10 It is a cross-sectional view of the screw installation fixture 1121.

[0068] The screw installation fixture 1121 includes a cylinder 1122, a connecting rod 1123, and a plurality of grippers 1124. One end of the connecting rod 1123 is connected to the push rod of the cylinder 1122, and the other end is connected to the gripper 1124. The ends of the plurality of grippers 1124 approach each other to clamp the screw. A motor is arranged on the robotic arm, and the motor drives the screw installation fixture 1121 to rotate, so as to realize screwing or unscrewing the screw.

[0069] For example, the first robot 110 at the outdoor heat exchanger installation station I-04 selects the heat exchanger installation robot 113. Figure 11 It is a structural diagram of the heat exchanger installation robot 113, Figure 12 It is a structural diagram of the heat exchanger fixture 1131.

[0070] The heat exchanger fixture 1131 includes two oppositely arranged fixing plates 1132. A hydraulic cylinder 1134 is arranged on one of the fixing plates 1132, and the push rod of the hydraulic cylinder 1134 is connected to a push plate 1133. The push plate 1133 is located between the two fixing plates 1132. A heat exchanger clamping space is formed between the push plate 1133 and one of the fixing plates 1132, and the push plate 1133 approaches the fixing plate 1132 to realize the picking of the heat exchanger.

[0071] Refer to Figure 13 , the outdoor heat exchanger 10 is placed in the material box 20 in a vertical posture, and the heat exchanger fixture 1131 is configured to pick up the outdoor heat exchanger 10 and the material box 20. The outdoor heat exchanger 10 is a U-shaped heat exchanger, which includes a heat exchanger section 11, a heat exchanger section 12, and a heat exchanger section 13 connected in sequence. The heat exchanger section 11 and the heat exchanger section 13 are opposite and parallel, the heat exchanger section 12 is arc-shaped, and the length of the heat exchanger section 11 is greater than the length of the heat exchanger section 13.

[0072] The outdoor heat exchanger 10 is placed vertically in the material frame 20. Inside the material frame 20, there are a first limiting part 21 and a second limiting part 22 arranged oppositely. The first limiting part 21 is configured to limit the end of the first section 11 of the heat exchanger, and the second limiting part 22 is configured to limit the second section 12 of the heat exchanger. The heat exchanger fixture 1131 is configured to clamp the first section 11 of the heat exchanger.

[0073] Specifically, the first limiting part 21 is a slot, and the end of the first section 11 of the heat exchanger is inserted into the slot to achieve limiting. The second limiting part 22 is a abutting structure with an arc-shaped concave surface, and the second section 12 of the heat exchanger abuts against the arc-shaped concave surface to achieve limiting. The third section 13 of the heat exchanger abuts against the side wall of the material frame 20, further improving the placement stability of the outdoor heat exchanger 10 in the material frame 20.

[0074] The heat exchanger fixture 1131 clamps the first section 11 of the heat exchanger and moves upward, then the outdoor heat exchanger 10 can be taken out from the material frame 20. The heat exchanger fixture 1131 clamps the side wall of the material frame 20, then the material frame 20 can be clamped and transported.

[0075] Multiple spaces arranged side by side can be set inside the material frame 20 to place multiple outdoor heat exchangers 10 simultaneously.

[0076] For example, the first robot 110 at the middle partition installation station I-05, the left side plate installation station I-06, the pipe assembly installation station I-07, the outdoor fan installation station I-10, the rear cover assembly installation station I-16, and the rear cover protection net installation station I-17 selects a multi-head robot 114, such as a double-head robot. Figure 14 It is a structural diagram of a double-head robot. The multi-head robot 114 can clamp multiple materials simultaneously, improving the assembly efficiency.

[0077] A first camera 1141 is arranged on the robotic arm of the multi-head robot 114. An extension base 1142 is arranged on the robotic arm, and the first camera 1141 is rotatably arranged on the extension base 1142. In this way, the movement range of the first camera 1141 is increased, and the image acquisition range is increased.

[0078] For example, the first robot 110 at the welding station I-09 selects a welding robot 115. Figure 15 It is a structural diagram of the welding robot 115. A welding head 1152 is arranged on the robotic arm of the robot. A second camera 1151 is arranged on the robotic arm. The welding points of the assembly are identified by the second camera 1151. The robot drives the welding head 1152 to weld the welding points. After welding is completed, the second camera 1151 takes a photo and uploads it to the control terminal. After comparing with the welding model in the database, the welding information is fed back to the welding robot 115, and the robotic arm drives the welding head 1152 to adjust the welding points.

[0079] For example, the first robot 110 at the airtight detection station I-11 and the automatic halogen detection station I-15 is selected as the gas detection robot 116. Figure 16 FIG. is a structural diagram of the gas detection robot 116. A detection probe 1162 is provided on the robotic arm of the robot. A third camera 1161 is provided on the robotic arm.

[0080] In some embodiments of the present application, the intelligent production line of the air conditioner outdoor unit further includes a material supply line 200. Figure 5 FIG. is a structural diagram of the material supply line 200, Figure 6 FIG. is another structural diagram of the material supply line 200.

[0081] Referring to Figure 1 , the material supply line 200 includes a material bin 210. The material bin 210 is configured to store the materials required by the assembly line 100. The materials required by any assembly station 170 are placed in the material bin 210 with the material frame 20 as the storage unit. A plurality of material placement areas 280 are provided in the material bin 210.

[0082] The material supply line 200 further includes a second conveyor line 230. The second conveyor line 230 is configured to convey the material frame 20. The material supply line 200 further includes a second robot 220. The second robot 220 is configured to transfer the material frame 20 between the material bin 210 and the second conveyor line 230. A ground rail 260 is provided on the ground, and the second robot 220 moves along the ground rail 260. Among them, the material frame 20 is configured to be transferred between the first conveyor line 120 and the second conveyor line 230.

[0083] In other words, the materials required by each assembly station 170 are stored and transferred with the material frame 20 as the storage unit. The plurality of material placement areas 280 store the plurality of material frames 20 in a partitioned manner. The material frames 20 required by different assembly stations 170 are placed in the corresponding material placement areas 280.

[0084] When a certain assembly station 170 needs to replenish materials, the second robot 220 takes out the required material frame 20 from the material bin 210 and places it on the second conveyor line 230. The material frame 20 is conveyed by the second conveyor line 230 to the first conveyor line 120, and then conveyed by the first conveyor line 120 to the assembly station 170 that needs to replenish materials. The first robot 110 at this assembly station 170 takes out the arriving material frame 20 for subsequent assembly use.

[0085] When an empty material box 20 appears at the assembly station 170, the first robot 110 places the empty material box 20 on the first conveyor line 120, and it is transported out by the first conveyor line 120. For example, the empty material box 20 is transported by the first conveyor line 120 to the second conveyor line 230, then transferred into the material storage 210 by the second robot 220, and then the empty material box 20 is replenished manually.

[0086] The intelligent production line of the outdoor unit realizes the automatic assembly of each assembly process by the assembly line 100, and realizes the automatic replenishment of the materials required for each assembly process by the material supply line 200. The automatic operation of the assembly line 100 and the material supply line 200 involves the coordinated use of different types of robots and vision devices. In this way, the automatic replenishment of outdoor unit materials and the automatic assembly of each process are realized, improving production efficiency.

[0087] The assembly line 100 and the material supply line 200 are relatively independent and cooperate with each other to realize the intelligence of the entire production line, without manual intervention and with a high degree of automation.

[0088] In some embodiments of the present application, a first identification code is set on the material box 20, a second identification code is set on the material placement area 280, and there is a one-to-one correspondence between the first identification code, the second identification code, and the assembly station 170.

[0089] A first vision detection device 140 is provided at the assembly station 170, and the first vision detection device 140 is configured to detect the first identification code.

[0090] A second vision detection device is provided on the second robot 220, and the second vision detection device is configured to detect the second identification code.

[0091] For example, when replenishing materials at the assembly station 170, the position of the material placement area 280 is determined by identifying the second identification code through the second vision detection device, and then the second robot 220 takes away the corresponding material box 20. The material box 20 is transported to the assembly station 170 that needs to be replenished via the second conveyor line 230 and the first conveyor line 120, and it is determined whether the material box 20 arrives by identifying the first identification code through the first vision detection device 140. After the material box 20 arrives, the first robot 110 takes out the material box 20 and places it on the material box placement table configured at the assembly station 170. Since there is a one-to-one correspondence between the first identification code, the second identification code, and the assembly station 170, accurate replenishment of the corresponding assembly station 170 can be realized through the identification code.

[0092] The first vision detection device 140 and the second vision detection device are common vision devices in the art, and will not be elaborated in this embodiment.

[0093] The first identification code and the second identification code can adopt methods such as barcodes, which are conventional technologies in the art, and will not be elaborated in this embodiment.

[0094] In some embodiments of the present application, there are various ways to set the first vision detection device 140. For example, the first vision detection device 140 is integrally provided on the robotic arm of the first robot 110. Another example is that the first vision detection device 140 is provided beside the first conveyor line 120 at the assembly station 170. For example, referring to Figure 7 , the first robot 110 is provided on one side of the first conveyor line 120, and the first vision detection device 140 is provided on the other opposite side.

[0095] In some embodiments of the present application, a first indicator light 150 is provided on the assembly station 170. When the material box 20 placed on the assembly station 170 is empty, the first indicator light 150 flashes. When there is material in the material box 20 placed on the assembly station 170, the first indicator light 150 goes out.

[0096] In some embodiments of the present application, a second indicator light 240 is provided on the material placement area 280. When the material placement area 280 needs to discharge materials, the second indicator light 240 flashes. When the material placement area 280 does not need to discharge materials, the second indicator light 240 goes out.

[0097] In some embodiments of the present application, when the material box 20 placed on the assembly station 170 is empty, the assembly station 170 sends a replenishment request to the control terminal. The control terminal sends a replenishment instruction to the material replenishment line 200. The second robot 220 picks up and places the material box 20 in the material warehouse 210 onto the second conveyor line 230, and the material box 20 is transported to the corresponding assembly station 170 via the first conveyor line 120.

[0098] The real-time monitoring and data management of the production process are realized through the terminal manufacturing execution system (MES); the position and logistics path of each material are accurately recorded through the terminal warehouse management system (WMS) to improve the warehousing efficiency; on the production line, any assembly station 170 is equipped with a vision detection device to read the information in the material label in real time to ensure the accurate supply of raw materials during the production process. If the materials at a certain assembly station 170 are used up, the system can remind of replenishment in time to avoid the production line from stopping.

[0099] In some embodiments of the present application, the second conveyor line 230 includes an AGV 250. The second robot 220 is configured to transfer the material box 20 between the material warehouse 210 and the AGV 250, and the AGV 250 is configured to transport the material box 20 to the first conveyor line 120.

[0100] The material box 20 is transported by the AGV250. Compared with the structure of the conveyor belt, the AGV250 has the advantages of flexible movement and small floor area.

[0101] For example, referring to Figure 5 , the second conveyor line 230 is composed of the AGV250 and the conveyor belt 290, and the conveyor belt 290 is docked with the first conveyor line 120. The AGV movement path markings are laid on the ground. The AGV250 places the material box 20 on the conveyor belt 290, and then the conveyor belt 290 transports it to the first conveyor line 120.

[0102] Another example, referring to Figure 6 , the second conveyor line 230 only includes the AGV250. The AGV movement path markings are laid on the ground, and the AGV250 places the material box 20 on the first conveyor line 120.

[0103] Figure 5 and Figure 6 In, the number of the assembly stations 170 on the first conveyor line 120 is only for illustration.

[0104] In some embodiments of the present application, multiple assembly stations 170 are arranged in at least two spatial regions. The at least two spatial regions are arranged in the vertical direction, and the material is transported between two adjacent spatial regions in the vertical direction through the first conveying device 130.

[0105] Arranging multiple assembly stations 170 in multiple spatial regions arranged in the height direction helps to reduce the floor area of the production line. The first conveying device 130 is, for example, a lifting device, or, for example, a conveyor belt with a height difference, so as to realize the transfer of materials between different height spatial regions.

[0106] For example, referring to Figure 4 , multiple assembly stations 170 are arranged in two spatial regions arranged up and down, which are respectively denoted as the upper spatial region 161 and the lower spatial region 162. The compressor installation station I-01, the gas-liquid separator installation station I-02, the first screw fixing station I-03, the outdoor heat exchanger installation station I-04, the middle partition installation station I-05, the left side plate installation station I-06, the piping component installation station I-07, the welding auxiliary manual station I-08, and the welding station I-09 are arranged in the lower spatial region 162. The outdoor fan installation station I-10, the airtight detection station I-11, the evacuation and filling station I-12, the commodity inspection station I-13, the joint disassembly station I-14, the automatic halogen inspection station I-15, the rear cover assembly installation station I-16, the rear cover protection net installation station I-17, the bottom bracket installation station I-18, the second screw fixing station I-19, and the automatic packaging station I-20 are arranged in the upper spatial region 161.

[0107] In some embodiments of the present application, referring to Figure 1 , along the material conveying direction, the first conveyor line 120 located in any spatial area transfers the empty material frame 20 between the last assembly station 170 and the second conveyor line 230. Figure 1 The solid arrows in

[0108] represent the conveying path of the materials, and the dashed arrows represent the conveying path of the empty material frame 20. In other words, taking the layout of multiple assembly stations 170 in the upper and lower two spatial areas as an example, the entire outdoor unit production line is configured with a material warehouse 210. When replenishing materials, the material frame 20 in the material warehouse 210 is transported to the first conveyor line 120 in the lower spatial area 162 via the second robot 220 and the second conveyor line 230, and the material frame 20 is transported by the first conveyor line 120 to the corresponding assembly station 170. When an empty material frame 20 appears at a certain assembly station 170, the first robot 110 at this assembly station 170 picks up and places the empty material frame 20 onto the first conveyor line 120. The empty material frame 20 in the lower spatial area 162 is transported from the last assembly station 170 (such as the welding station I-09) located in the lower spatial area 162 to the second conveyor line 230 and then returns to the material warehouse 210. The empty material frame 20 in the upper spatial area 161 is transported from the last assembly station 170 (such as the automatic packaging station I-20) located in the upper spatial area 161 to the second conveyor line 230 and then returns to the material warehouse 210.

[0109] The entire intelligent production line is configured with a material warehouse 210, which is convenient for centralized storage and management of materials. The upper spatial area 161 and the lower spatial area 162 independently transfer the empty material frame 20 respectively, which helps to improve the frame return efficiency.

[0110] In some other embodiments of the present application, referring to Figure 2 , along the material conveying direction, the first conveyor line 120 located in any spatial area transfers the full material frame 20 between the first assembly station 170 and the second conveyor line 230. Figure 2 The solid arrows in

[0111] represent the conveying path of the materials, and the dashed arrows represent the conveying path of the empty material frame 20. In other words, taking the layout of multiple assembly stations 170 in the upper and lower two spatial areas as an example, the entire outdoor unit production line is configured with a material warehouse 210. The conveying path of the empty material frame 20 is the same as that in Figure 1The same applies and will not be elaborated here. When a certain assembly station 170 in the lower space area needs replenishment, the corresponding material box 20 in the material warehouse 210 moves to the foremost assembly station 170 (such as the compressor installation station I-01) in the lower space area 162 through the second robot 220 and the second conveyor line 230, and then moves to the corresponding assembly station 170 through the first conveyor line 120. When a certain assembly station 170 in the upper space area 161 needs replenishment, the corresponding material box 20 in the material warehouse 210 moves to the foremost assembly station 170 (such as the outdoor fan installation station I-10) in the upper space area 161 through the second robot 220 and the second conveyor line 230, and then moves to the corresponding assembly station 170 through the first conveyor line 120.

[0112] The upper space area 161 and the lower space area 162 adopt independent replenishment paths, which helps to improve the replenishment efficiency.

[0113] In some embodiments of the present application, the material replenishment line 200 includes a plurality of sub-material replenishment lines 270, and the plurality of sub-material replenishment lines 270 are correspondingly arranged with a plurality of space areas. For example, the material replenishment line 200 includes two sub-material replenishment lines 270, and any material replenishment line 200 is configured with a material warehouse 210, a second robot 220, and a second conveyor line 230. A plurality of assembly stations 170 are arranged in the upper and lower two space areas. One of the sub-material replenishment lines 270 replenishes the assembly stations 170 in the lower space area 162, and the other sub-material replenishment line 270 replenishes the assembly stations 170 in the upper space area 161.

[0114] Replenishing the assembly stations 170 in different space areas through a plurality of independent sub-material replenishment lines 270 helps to improve the replenishment efficiency in each space area and the return efficiency of the empty material box 20.

[0115] In some embodiments of the present application, an intelligent production line for an indoor unit is provided. Figure 17 It is a layout schematic diagram of an intelligent production line for an indoor unit. The intelligent production line for an indoor unit includes a plurality of assembly stations, and the plurality of assembly stations are arranged in sequence along the fourth conveyor line 350.

[0116] The intelligent production line for an indoor unit includes an indoor fan installation station II-01. The intelligent production line for an indoor unit includes an indoor heat exchanger installation station II-02. The intelligent production line for an indoor unit includes an indoor heat exchanger spraying station II-03. The intelligent production line for an indoor unit includes a water receiving tray installation station II-04. The intelligent production line for an indoor unit includes a rear cover installation station II-05. The intelligent production line for an indoor unit includes a screw locking station II-06. The intelligent production line for an indoor unit includes a packaging station II-07.

[0117] The indoor fan installation station II-01, the indoor heat exchanger installation station II-02, the indoor heat exchanger spraying station II-03, the water receiving tray installation station II-04, the rear cover installation station II-05, the screw locking station II-06, and the packaging station II-07 are arranged in sequence along the fourth conveyor line 350.

[0118] In some embodiments of the present application, a heat exchanger spraying system 300 is provided. Figure 18 FIG. is a structural diagram of a heat exchanger spraying system 300. The spraying system is configured to spray the heat exchanger.

[0119] The intelligent production line of the indoor unit includes the indoor heat exchanger spraying station II-03, and the heat exchanger spraying system 300 is used to spray the indoor heat exchanger. Embedding the heat exchanger spraying system 300 into the intelligent production line of the indoor unit improves the production efficiency of the indoor unit.

[0120] In some embodiments of the present application, referring to Figure 17 , along the conveying direction of the fourth conveyor line 350, the indoor heat exchanger spraying station II-03 is located downstream of the indoor heat exchanger installation station II-02. After the indoor heat exchanger 30 is installed, it is sprayed. The heat exchanger spraying process is embedded in the intelligent production line of the indoor unit, and the integration degree of the production line is higher.

[0121] In some other embodiments of the present application, the indoor heat exchanger spraying station II-03 is independently arranged. After the indoor heat exchanger 30 is sprayed at the spraying station, it is then transported to the fourth conveyor line 350 through a robot or a conveying device to participate in the subsequent indoor unit assembly process.

[0122] In some embodiments of the present application, referring to Figure 19 , the heat exchanger includes heat exchange tubes, and the heat exchange tubes are configured to circulate the refrigerant. The heat exchanger further includes a plurality of fins 31 arranged at intervals, and any one of the fins 31 is provided with a through hole 32, and the heat exchange tube passes through the through hole 32. Figure 19 FIG. shows a straight heat exchanger. The heat exchanger further includes a U-shaped heat exchanger. Taking Figure 19 as an example, the length direction of the heat exchanger is denoted as X, the width direction is denoted as Y, and the thickness direction is denoted as Z.

[0123] Referring to Figure 18 , the spraying system includes a spraying robot 310. A spray head 311 is provided at the end of the robotic arm of the spraying robot 310, and the spray head 311 is configured to spray the fins 31. A first guide rail 370 is arranged on the ground, and the spraying robot 310 moves along the first guide rail 370.

[0124] During spraying, the spray head 311 is located on one side of the heat exchanger, and the coating material is sprayed from one side of the heat exchanger to the other side. By controlling parameters such as the movement range and amplitude of the spray head 311, the spraying pressure of the spray head 311, and the distance between the spray head 311 and the heat exchanger, the spraying area is controlled.

[0125] The spray head 311 is a two-fluid atomizing nozzle with a nozzle diameter of 0.3 mm, ensuring that the atomized particle diameter ≤ 10 μm to ensure that the coating evenly covers the surface of the fin 31.

[0126] The spraying system further includes a paint tank configured to supply the coating material to the spray head 311, and a capsule part 380 is mixed in the coating material, and a repair agent is filled in the capsule part 380.

[0127] The spraying system further includes a vision device 320 configured to obtain image information of the heat exchanger.

[0128] The spraying system further includes a control system that communicates with the spraying robot 310 and the vision device 320. The control system is configured to analyze the dimensional data information of the heat exchanger based on the image information of the heat exchanger to control the movement of the spray head 311.

[0129] The spraying system further includes a magnetic field generating device 360 configured to emit a magnetic field to the heat exchanger.

[0130] Among them, the capsule part 380 is configured to move in the direction close to the perforation 32 under the action of the magnetic field, and the capsule part 380 is further configured to rupture when subjected to an external force to release the internal repair agent to repair the coating of the fin 31.

[0131] Specifically, the coating material ejected from the spray head 311 has a repair function, and a capsule part 380 is mixed in the coating material. A repair agent is filled inside the capsule part 380, and the repair agent contains siloxane and a catalyst.

[0132] The outer diameter dimension of the capsule part 380 is at the nanometer level, and the particle size of the capsule part 380 is 5 - 20 μm. Figure 21 Fig. is a structural diagram of the capsule part 380. The outer shell of the capsule part 380 is a spherical core-shell structure to ensure uniform force under the action of the magnetic field.

[0133] The capsule part 380 is made of iron oxide and silicon dioxide. The capsule part 380 uses iron oxide nanoparticles and is coated with silicon dioxide by the sol-gel method to form a core-shell structure. Iron oxide gives the capsule part 380 a high magnetic susceptibility, facilitating precise control of the movement trajectory through an external magnetic field. Silicon dioxide gives the capsule part 380 chemical inertness and certain mechanical strength, protecting the inner core from environmental corrosion and at the same time regulating the shell rupture threshold by adjusting the crosslinking degree.

[0134] The repair agent is encapsulated in the inner cavity of the capsule part 380 through microfluidic technology. When cracks occur in the fin 31 due to corrosion or mechanical load, a high-stress area will be formed at the crack tip. The local stress generated by crack propagation, such as tensile and shear stresses, exceeds the mechanical strength threshold of the shell of the capsule part 380, resulting in the rupture of the shell of the capsule part 380 and the release of the repair agent.

[0135] By regulating the thickness, crosslinking degree of the shell of the capsule part 380 or adding toughening agents, the mechanical strength and sensitivity of the shell are balanced, and the capsule part 380 is embedded at the root of the fin 31 to improve the triggering efficiency in the area of the coating prone to stress concentration.

[0136] The magnetic field generating device 360 adopts an electromagnetic array device. The electromagnetic array device generates a gradient magnetic field. The capsule part 380 is driven by magnetic force in the magnetic field and gathers towards the area of the root of the fin 31 with a high magnetic field intensity (i.e., the position of the perforation 32). The formula is:

[0137] F = ▽(M×B)

[0138] Among them, F is the magnetic force driving the movement of the capsule part (unit: N), M is the magnetization intensity of the capsule part 380 (unit: A / m), and B is the magnetic induction intensity of the gradient magnetic field generated by the electromagnetic array device (unit: T).

[0139] The electromagnetic array device adjusts the magnetic field gradient according to the fin gap to ensure that the capsule part 380 is limitedly deposited in the area of the root of the fin 31 prone to corrosion. The magnetic field regulation satisfies the formula:

[0140] ▽B = k / d 2

[0141] Among them: ▽B is the magnetic field gradient (unit: T / m), k is the material - process coefficient (unit: T.m 2 ) d is the width of the fin gap, that is, the minimum distance between adjacent fins (unit: m).

[0142] When the fin 31 is processed, a flanging is formed around the perforation 32. The existence of the flanging makes the distance between two adjacent fins 31 at the position of the perforation 32 the smallest. Therefore, at the perforation 32, that is, at the root of the fin 31, the magnetic field intensity is the largest. So the capsule part 380 can move towards the vicinity of the perforation 32 under the action of the magnetic field to be deposited near the perforation 32.

[0143] The root of the fin 31 is the position prone to corrosion. After the fin 31 is corroded, cracks will appear on the surface. When the local stress generated by crack propagation, such as tensile and shear stresses, exceeds the mechanical strength threshold of the shell of the capsule part 380, it will cause the shell of the capsule part 380 to rupture and release the repair agent, thereby repairing the corroded position of the fin 31.

[0144] In some embodiments of the present application, the spray head 311 is located on one side of the heat exchanger. While the spray head 311 moves along the length direction X of the heat exchanger in a sine wave trajectory, it also moves along the width direction Y of the heat exchanger. Compared with the traditional segmented spraying method, this spraying path has higher efficiency.

[0145] In some embodiments of the present application, when the spray head 311 moves along the Y direction, the spray head 311 swings reciprocally along the Y direction, and the swing amplitude of the spray head 311 is positively correlated with the gap between two adjacent fins 31. The formula is:

[0146]

[0147] Where A is the amplitude of the lateral swing of the spray head 311 (unit: mm), kA is the proportionality coefficient (unitless), and d is the gap between the fins 31, that is, the minimum distance between two adjacent fins 31 (unit: mm). The smaller the gap between the fins 31, the lower the swing amplitude of the spray head 311, so as to avoid clogging the gap with paint.

[0148] The lower limit value of the swing amplitude of the spray head 311 is 0.5 mm, which is applicable to the dense area where d ≤ 0.8 mm. The upper limit value of the swing amplitude of the spray head 311 is 3.0 mm, which is applicable to the sparse area where d ≥ 2.5 mm.

[0149] In some embodiments of the present application, when the spray head 311 moves along the Y direction, the spray head 311 swings reciprocally along the Y direction, and the swing frequency of the spray head 311 is positively correlated with the density of the fins 31. The formula is:

[0150] f = kf·ρ

[0151] Where f is the swing frequency of the spray head 311 (unit: hz), kf is the density-frequency coefficient (unit: hz mm / fins 31), and ρ is the density of the fins 31, that is, the number of fins 31 per unit length (unit: fins 31 / mm). The higher the density of the fins 31, the greater the swing frequency of the spray head 311, so as to improve the spraying coverage efficiency.

[0152] When the spraying pressure increases, the swing frequency of the spraying part increases synchronously to match the atomized particle output rate.

[0153] The basic swing frequency of the spray head 311 is 5 Hz, which is applicable to the sparse area where ρ ≤ 10 fins 31 / cm.

[0154] The upper limit of the swing frequency of the spray head 311 is 20 Hz, which is applicable to the dense area where ρ ≥ 30 fins 31 / cm.

[0155] In some embodiments of the present application, the heat exchanger has a straight section area and a bent section area, and the spraying of the straight section area and the bent section area by the spray head 311 is carried out separately.

[0156] In other words, for a U-shaped heat exchanger, the spraying head 311 sprays the heat exchanger in zones. For example, it first sprays the straight section area and then sprays the bent area. When the spraying head 311 passes through the bent area, the spraying head 311 generates an arc-shaped or polyline-shaped bypass path along the outer edge of the bent area to ensure that the spraying head 311 maintains a preset safety distance from the bent area.

[0157] In some embodiments of the present application, the movement path of the spraying head 311 is within the projection range of the heat exchanger, and the movement speed and swing amplitude of the spraying head 311 are reduced when it approaches the boundary of the heat exchanger.

[0158] In other words, the vision device 320 extracts the boundary of the fin 31 in real time to generate a dynamic spraying restricted area. The movement path of the spraying head 311 is strictly restricted within the projection range of the fin 31. A gradient deceleration strategy is adopted in the edge area, and the movement speed and amplitude are reduced when approaching the boundary to prevent paint splashing.

[0159] In some embodiments of the present application, the heat exchanger spraying system 300 further includes a UV curing device 340, which is configured to cure the coating on the sprayed heat exchanger. The UV curing device 340 is a prior art and will not be elaborated in this case.

[0160] The heat exchanger spraying system 300 further includes a third conveyor line 390. The magnetic field generating device 360 and the UV curing device 340 are arranged at intervals along the length direction of the third conveyor line 390, and the magnetic field generating device 360 generates a magnetic field for the heat exchanger placed on the third conveyor line 390.

[0161] When Figure 18 the shown heat exchanger spraying system 300 is applied to Figure 17 the indoor unit intelligent production line shown, the third conveyor line 390 is docked with the fourth conveyor line 350. In this way, the spraying system is embedded in the indoor unit intelligent production line.

[0162] In some embodiments of the present application, the spraying process of the heat exchanger spraying system 300 includes:

[0163] The vision device 320 acquires the point cloud data of the fins 31 of the heat exchanger and extracts topological parameters such as the inclination angle, spacing, and height of the fins 31.

[0164] Based on a graph neural network (GNN), a spatial topological relationship model of the fins 31 is constructed to generate data on the surface curvature distribution and gap width of the fins 31.

[0165] According to the model, the spraying path is decomposed into "while the spray head 311 moves along the length direction X of the heat exchanger, it also swings and sprays along the width direction X of the heat exchanger". The spray head 311 moves along the length direction X of the heat exchanger in a sine wave trajectory, and the amplitude and frequency of the spray head 311 are adaptively adjusted by the gap of the fin 31 to ensure that the coating penetrates into the root of the fin 31 and does not block the gap.

[0166] The compressed air pressure of the spray head 311 is adjusted in real time through the PID algorithm to adapt to different fin 31 density regions. The pressure is increased in the dense area and decreased in the sparse area.

[0167] The mass flow meter 330 monitors the coating flow rate in real time. If the deviation exceeds ±5%, an alarm is triggered and spraying is suspended, and the abnormality is recorded by the MES system.

[0168] The spraying robot 310 moves along the path planned by the first guide rail 370, and the spray head 311 sprays atomized particles with a diameter of 0.3 mm to evenly cover the surface of the fin 31.

[0169] After spraying is completed, the heat exchanger enters the UV curing device 340 and is irradiated at a wavelength of 365 nm and a power of 500 W / m 2 for 30 seconds to complete the crosslinking and curing of the coating.

[0170] The spraying parameters (coating thickness, repair agent content, etc.) are uploaded to the Internet of Things platform through the OPC UA protocol and bound to the MES system to achieve full life cycle quality traceability.

[0171] In some embodiments of the present application, referring to Figure 22 , a heat exchanger production line is provided, which includes a support frame 50, a fin conveying line 40, and a plurality of processing devices arranged along the conveying direction of the fin conveying line 40. The fin conveying line 40 is installed on the support frame 50, and along the conveying direction of the fin conveying line 40, at least a fin access position, an end plate installation position, a tube insertion station, and a nitrogen filling station are provided.

[0172] The processing devices include a fin access device 400 corresponding to the fin access position, an end plate installation device 500 corresponding to the end plate installation position, a tube insertion device 600 corresponding to the tube insertion station, and a nitrogen filling device 700 corresponding to the nitrogen filling station.

[0173] Combined with Figure 30 , specifically, the fin conveying line 40 includes an upstream conveying line 41 and a downstream conveying line 42. The upstream conveying line 41 includes a plurality of rollers 4101 arranged at intervals along the conveying direction of the upstream conveying line 41. Each roller 4101 is connected to a motor, and the roller 4101 is driven by the motor to roll to realize the conveying of the fin stack 60.

[0174] The downstream conveyor line 42 includes a conveyor drive and a conveyor belt. The conveyor belt is driven by the conveyor drive to move, thereby achieving the purpose of conveying the fin stack 60 between various workstations. When the fin stack 60 is conveyed to the corresponding processing workstation, the conveyor drive shuts down. After processing is completed, the conveyor drive is turned on to continue conveying to the next workstation.

[0175] The fin access device 400 is arranged at the end of the fin conveyor line 40 and is used to transfer the fin stack 60 formed by the fins processed by the aluminum sheet uncoiler and the punching machine to the fin conveyor line 40. The fin stack 60 undergoes subsequent various processes to form a heat exchanger or an evaporator.

[0176] The end plate installation position and the inserting pipe workstation are located on the upstream conveyor line 41, and the nitrogen filling workstation is located on the downstream conveyor line 42.

[0177] A tube expanding device 43 and a drying device 44 are also arranged between the upstream conveyor line 41 and the downstream conveyor line 42. The fin stack 60 is conveyed between the upstream conveyor line 41 and the tube expanding device 43, between the tube expanding device 43 and the drying device 44, and between the drying device 44 and the downstream conveyor line 42 by the transfer robot 45.

[0178] A pipe bending workstation, a welding workstation, and a helium filling workstation are also arranged on the downstream conveyor line 42. The pipe bending workstation is arranged upstream of the nitrogen filling workstation, and the welding workstation and the helium filling workstation are arranged downstream of the nitrogen filling workstation in sequence along the conveying direction of the downstream conveyor line 42.

[0179] Since the downstream conveyor line 42 is controlled to start and stop by the conveyor drive, therefore, the layout positions of each workstation need to meet the requirement that in the shutdown state, corresponding processing operations can be carried out at each workstation, and when conveying, the corresponding fin stack 60 is synchronously conveyed to the next processing position.

[0180] Next, the processing equipment involved will be described in detail:

[0181] Reference Figures 23 - 25 , the fin access device 400 includes an access bracket 410, a support bottom plate 420, a lifting support plate 430, and a offline robot 450. The access bracket 410 is an overall frame structure, and a storage position is formed therein. The support bottom plate 420 is horizontally arranged on the access bracket 410. Specifically, it is located at the bottom of the storage position formed within the access bracket 410.

[0182] A blanking needle 61 is vertically arranged on the support bottom plate 420. The bottom of the blanking needle 61 is fixed on the support bottom plate 420, and the top of the blanking needle 61 is vertically upward, and is used for blanking positioning of the fins that are blanked into the storage position after processing.

[0183] Define the length direction of the fin as the first direction, the width direction of the fin as the second direction, and the thickness direction of the fin as the third direction. Along the second direction, multiple groups of fin stacks 60 are formed within the storage position. Each group of fin stacks 60 includes multiple fins stacked on the blanking needle 61 along the third direction.

[0184] Combined Figure 27 , the offline robot 450 is used to transfer each group of fin stacks 60 to the upstream conveyor line 41.

[0185] The lifting support plate 430 is arranged in parallel above the support bottom plate 420 and is movably connected to the access support 410 along the third direction. A communication hole 432 is formed on the lifting support plate 430, a through insertion hole is formed on the fin, and the blanking needle 61 is connected to the corresponding insertion hole through the communication hole 432.

[0186] An elevating cylinder 440 is arranged on the access support 410. The output end of the elevating cylinder 440 is connected to the lifting support plate 430 and is used to drive the lifting support plate 430 to move along the height direction of the access support 410.

[0187] When the lifting support plate 430 moves up and down along the third direction, the blanking needle 61 remains stationary, and the insertion hole and the communication hole 432 move up and down relative to the blanking needle 61.

[0188] After the fin stack 60 is formed within the storage position, a positioning needle 62 is further arranged on the fin stack 60.

[0189] The positioning needle 62 is arranged in the reserved insertion hole. One end of the positioning needle 62 supports on the lifting support plate 430, and the other end extends above the fin stack 60.

[0190] The communication hole 432 is not designed at the position of the lifting support plate 430 corresponding to the positioning needle 62. As the lifting support plate 430 moves up and down, the positioning needle 62 also moves accordingly, always stringing together the fins within the same group of fin stacks 60.

[0191] The offline robot 450 specifically includes an offline robot body 451 and an offline fixture 452. The offline fixture 452 is arranged on the offline robot body 451.

[0192] The offline robot body 451 includes an offline robot base 4511, an offline robot big arm 4512, and an offline robot small arm 4513 that are connected in sequence.

[0193] In addition, the offline robot 450 further includes a robot motor and a vision camera. The offline robot base 4511 is fixed to the ground by bolts. The robot motor is connected to the offline robot 450 by bolts on the offline robot base 4511. The offline robot base 4511, the offline robot big arm 4512, and the offline robot small arm 4513 are all connected by sliding joints. The vision camera is arranged on the offline fixture 452 and is used to obtain the position information of the fin stack 60.

[0194] Reference Figures 28 - 30 , the offline fixture 452 includes a first offline clamping member 4521 and a second offline clamping member 4522 which are symmetrically arranged. Clamping portions are respectively arranged on the first offline clamping member 4521 and the second offline clamping member 4522 and are used to clamp both ends of the positioning pin 62.

[0195] The offline robot 450 is configured to clamp both ends of the fin stack 60 on the lifting support plate 430 and transfer it to the target position, that is, to clamp the fin stack 60 onto the upstream conveyor line 41.

[0196] Along the length direction of each fin, at least one positioning pin 62 is respectively inserted at both ends of the fin stack 60. The bottom of the positioning pin 62 contacts the lifting support plate 430, and the top of the positioning pin 62 extends to the upper end of the fin stack 60. The first offline clamping member 4521 and the second offline clamping member 4522 are respectively used to clamp the upper end and the lower end of the positioning pin 62.

[0197] The first offline clamping member 4521 and the second offline clamping member 4522 are respectively connected to the end of the offline robot small arm 4513 through clamping power members. The first offline clamping member 4521 includes two first offline clamping jaws arranged at intervals. The second offline clamping member 4522 includes two second offline clamping jaws arranged at intervals. The first offline clamping jaw is used to clamp the upper end of the positioning pin 62, and the second offline clamping jaw is used to clamp the lower end of the positioning pin 62.

[0198] The number of the clamping power members can be two. Each clamping power member includes an output end which is respectively connected to the first offline clamping jaw and the second offline clamping jaw.

[0199] Alternatively, the number of the clamping power members is one, which is provided with two output ends. The two output ends are respectively located on both sides of the clamping power member and are respectively connected to the first offline clamping jaw and the second offline clamping jaw.

[0200] The first offline clamping jaw and the second offline clamping jaw are respectively connected to the clamping power member through a transfer plate 4523, that is, the output end of the clamping power member is connected to the transfer plate 4523, and the first offline clamping jaw and the second offline clamping jaw are respectively connected and fixed to the transfer plate 4523 on the corresponding side.

[0201] A first lower clamping jaw is formed with a first positioning clamping plate perpendicular to the adapter plate 4523, and at least one first positioning recess with an opening facing the second lower clamping jaw is formed on the first positioning clamping plate.

[0202] A second lower clamping jaw is formed with a second positioning clamping plate 4524 perpendicular to the adapter plate 4523, and at least one second positioning recess 4525 with an opening facing the first lower clamping jaw is formed on the second positioning clamping plate 4524.

[0203] In the clamping state, the upper end of the positioning pin 62 is inserted into the first positioning recess, and the lower end of the positioning pin 62 is inserted into the second positioning recess 4525.

[0204] The first lower clamping jaw further includes a first connecting plate, the first connecting plate is perpendicularly arranged with the first positioning clamping plate, and the first positioning clamping plate is detachably connected to the adapter plate 4523 through the first connecting plate.

[0205] The second lower clamping jaw further includes a second connecting plate 4527, the second connecting plate 4527 is perpendicularly arranged with the second positioning clamping plate 4524, and the second positioning clamping plate 4524 is detachably connected to the adapter plate 4523 through the second connecting plate 4527.

[0206] The first connecting plate and the first positioning clamping plate are of an integral structure, the second connecting plate 4527 and the second positioning clamping plate 4524 are of an integral structure, and reinforcing ribs 4528 are respectively arranged between the first connecting plate and the first positioning clamping plate, and between the second connecting plate 4527 and the second positioning clamping plate 4524 to improve the connection strength between the first connecting plate and the first positioning clamping plate, and between the second connecting plate 4527 and the second positioning clamping plate 4524.

[0207] An end of the second positioning clamping plate 4524 corresponding to the lower end of the fin stack 60 is formed with a guiding inclined surface 4526, and the guiding inclined surface 4526 is used for lifting the lowermost fin of the fin stack 60 and guiding the lower end of the positioning pin 62 into the second positioning recess 4525 during the process of the second lower clamping jaw moving to the bottom of the fin stack 60.

[0208] In order to facilitate the clamping of the second positioning clamping plate 4524, in some embodiments of the present application, the lifting support plate 430 is formed with a support convex portion 431 extending upward, and the length of the support convex portion 431 along the first direction is less than the length of the fin.

[0209] Each fin stack 60 is supported on the support convex portion 431, and a clamping gap is formed between the bottom of each fin stack 60 and the lifting support plate 430 under the action of the support convex portion 431, and the second lower clamping member 4522 moves from the clamping gap to the bottom of the fin stack 60 to clamp the positioning pin 62.

[0210] To avoid interference between the adapter plate 4523 on the second positioning clamping plate 4524 and the supporting convex portion 431 during the clamping process, the present application designs the length of the second connecting plate 4527 to extend downward, so that during the clamping process of the second positioning clamping plate 4524, the adapter plate 4523 is located above the supporting convex portion 431 to avoid interference.

[0211] Reference Figures 31 - 32 , an end plate installation position is formed on the fin conveying line 40, and the end plate installation device 500 is adapted to the end plate installation position.

[0212] The end plate installation device 500 includes an end plate installation robot 510 and a lifting stopper 520. The end plate installation robots 510 are symmetrically arranged on both sides of the fin conveying line 40 and are used to install end plate members 63 at both ends of the fin stack 60 simultaneously.

[0213] Each end plate installation robot 510 includes an end plate robot body 511, a connecting middle beam 512, a clamping power member, and two end plate clamps 513. The connecting middle beam 512 is installed on the short plate robot body, the clamping power member is installed on the connecting middle beam 512, and the two end plate clamps 513 are arranged on the clamping power member. Under the action of the clamping power member, the two end plate clamps 513 move relatively or towards each other to clamp or release the end plate member 63.

[0214] The clamping power member is along the length direction of the connecting middle beam 512. The clamping power member is formed with a first telescopic end and a second telescopic end, and the two end plate clamps 513 are respectively installed on the first telescopic end and the second telescopic end.

[0215] Alternatively, in some other embodiments, the clamping power members are in one-to-one correspondence with the end plate clamps 513. The two clamping power members are symmetrically arranged on the connecting middle beam 512 respectively, and the end plate clamps 513 are installed at the output ends of the clamping power members.

[0216] An end plate installation position is formed on the fin conveying line 40. The stopper portion 522 is located downstream of the end plate installation position. When the fin stack 60 is conveyed to the end plate installation position along the fin conveying line 40, the stopper portion 522 rises above the roller 4101.

[0217] The lifting stopper 520 is arranged on the fin conveying line 40. Before the fin stack 60 is conveyed to the end plate installation position, the lifting stopper 520 rises to stop the fin stack 60.

[0218] The lifting stopper 520 specifically includes a lifting drive member 521 and a stopper portion 522. The lifting drive member 521 is used to be arranged below the fin conveying line 40, and the stopper portion 522 is installed at the output end of the lifting drive member 521. Under the action of the lifting drive member 521, the stopper portion 522 rises and falls between the adjacent rollers 4101 corresponding on the fin conveying line 40, and is used to stop and correct the fin stack 60 at the corresponding position on the fin conveying line 40.

[0219] The stopper portion 522 includes two or more than two stoppers 5221 arranged at intervals along the axial direction of the roller 4101. Both of the two stoppers 5221 are connected to the output end of the lifting drive member 521. The lifting drive member 521 drives the two stoppers 5221 to rise simultaneously. Before the fin stack 60 is conveyed to the end plate installation position, the two stoppers 5221 rise above the roller 4101 to stop the forward conveyance of the fin stack 60.

[0220] When the fin stack 60 is angularly deflected with respect to the roller 4101, the stopper 5221 can straighten the fin stack 60 to be parallel to the axial direction of the roller 4101, which is convenient for the short-board robot to install the end plate member 63.

[0221] There is an end plate clamping position formed between the two end plate clamps 513 of the end plate installation robot 510. A pushing member 514 extending towards the end plate clamping position is arranged on the connecting middle beam 512. The pushing member 514 includes a pushing power member and a pushing end portion. The pushing power member is fixed on the connecting middle beam 512, and the pushing end portion is fixed at the output end of the pushing power member.

[0222] A pallet member 4102 is further arranged on the fin conveying line 40. The fin stack 60 is placed on the pallet member 4102. The lifting member 530 is arranged upstream of the lifting stopper 520 and includes a lifting cylinder and a lifting block. The lifting cylinder is arranged below the end plate installation position, and the lifting block is installed at the output end of the lifting cylinder. Under the action of the lifting cylinder, the lifting block rises and falls between the corresponding rollers 4101 and is used to jack up the pallet conveyed to the lifting block installation position.

[0223] Define the conveying direction of the fin conveying line 40 as the X direction, the width direction of the fin conveying line 40 as the Y direction, and the height direction of the fin conveying line 40 as the Z direction. The dimension of the end plate member 63 along the Z direction is the width of the end plate member 63, and the dimension of the fin stack 60 along the Z direction is the width of the fin stack 60. The width L1 of the end plate member 63 is greater than the width L2 of the fin stack 60. The thickness L3 of the pallet member 4102 satisfies: L3 > (L1 - L2) / 2 to avoid interference between the end plate member 63 and the roller 4101 when the end plate member 63 is installed at both ends of the fin stack 60.

[0224] Upstream of the end plate installation position, a detection member 550 is further provided. The detection member 550 is specifically installed on the support frame 50, on one side of the roller 4101. The detection member 550 is connected to the controller 70, and the controller 70 is signal-connected to the lifting drive member 521 and the jacking cylinder. The controller 70 is configured to receive the detection signal of the detection member 550 and control the movement of the lifting drive member 521 and the jacking cylinder.

[0225] The controller 70 is the control center of the entire processing line, used to control the start and stop of the fin conveying line 40, the operation of each robot, and the switch of each device. The control process is prior art and will not be described in detail.

[0226] In some other embodiments, a centering assembly 540 is further provided on the fin conveying line 40. The centering assembly 540 includes two centering cross beams 541 symmetrically arranged on the fin conveying line 40. The centering cross beams 541 are located downstream of the end plate installation position. A centering channel is formed between the centering cross beams 541 for centering the pallet to the middle position of the fin conveying line 40.

[0227] One end of each centering cross beam 541 close to the end plate installation position is provided with a guiding section 542, and a guiding channel that tapers along the conveying direction of the fin stack 60 is formed between the two guiding sections 542.

[0228] The centering cross beam 541 is fixed to the support frame 50 through a centering bracket 543, and the height of the centering cross beam 541 is lower than the positioning pins 62 on the fin stack.

[0229] After the end plate is installed, the block 5221 on the lifting stopper 520 descends, and the fin stack 60 continues to be conveyed downward along the fin conveying line 40.

[0230] After the end plate members 63 at both ends of the fin stack 60 pass through the guiding channel, under the action of the guiding section 542, the fin stack 60 moves towards the middle position of the fin conveying line 40, improving the accuracy of the position of the fin stack 60 during conveying, and facilitating the operation of the insertion robot 610 during subsequent tube insertion.

[0231] On the opposite sides of the two end plate clamps 513, a plurality of limiting protrusions are respectively provided. A clamping position for restricting the end plate member 63 is formed between the limiting protrusions of each end plate clamp 513. During clamping, the end of the end plate member 63 is located between the limiting protrusions to restrict the position of the end plate member 63 and prevent the end plate member 63 from disengaging from the end plate clamp 513.

[0232] Reference Figures 34 - 37 , similar to the offline robot body 451, the end plate robot body 511 includes an end plate robot base, an end plate robot big arm, and an end plate robot small arm connected in sequence.

[0233] In addition, the end plate robot also includes a robot motor and a vision camera. The end plate robot base is fixed to the ground by bolts, the robot motor is connected to the end plate robot base by bolts, the end plate robot base, the end plate robot's large arm, and the end plate robot's small arm are all connected by sliding joints, and the vision camera is arranged on the end plate fixture 513 for obtaining the position information of the fin stack 60 and the positioning pins 62.

[0234] The end plate member 63 is also provided with through holes corresponding to the fins one by one. The end plate member 63 is inserted onto the positioning pins 62 through the corresponding through holes. After the insertion of the end plate member 63 is completed, the pushing power member drives the pushing end to push the end plate member 63 forward, and the two side end plate members 63 are pushed towards the middle simultaneously. In addition to installing the end plate member 63 in place, the gaps between the fins are eliminated, making the connection between the fins tight.

[0235] After the installation is completed, the fin stack 60 is conveyed downward along the fin conveyor line 40 to the pipe insertion station.

[0236] A pipe insertion device 600 is arranged beside the pipe insertion station. The pipe insertion device 600 grabs the pipe member 64 and inserts the pipe member 64 into the insertion holes in the fin stack 60.

[0237] Specifically, referring to Figure 38 、 Figure 39 , the pipe insertion device 600 includes a pipe insertion robot 610. The pipe insertion robot 610 includes a pipe insertion robot body 611 and a pipe insertion fixture 612. The pipe insertion fixture 612 is connected to the pipe insertion robot body 611 and includes two pipe insertion components arranged at intervals. Each pipe insertion component includes an intermediate connection part 613 and at least one pipe gripper 614 arranged on the intermediate connection part 613. The pipe insertion device 600 grabs the pipe member 64 through the pipe gripper 614 and, driven by the pipe insertion robot body 611, inserts the pipe member 64 into the fin stack 60.

[0238] In addition, the pipe insertion robot 610 also includes a robot motor and a vision camera. The pipe insertion robot base is fixed to the ground by bolts, the robot motor is connected to the pipe insertion robot base by bolts, the pipe insertion robot base, the pipe insertion robot's large arm, and the pipe insertion robot's small arm are all connected by sliding joints, and the vision camera is arranged on the pipe insertion fixture 612 for obtaining the position information of the fin stack 60 and the insertion holes.

[0239] Each pipe gripper 614 includes a gripper cylinder 6141 and a gripper end 6142. The gripper cylinder 6141 is formed with a first telescopic end and a second telescopic end. The number of gripper ends 6142 is two, which are respectively arranged on the first telescopic end and the second telescopic end. Each gripper end 6142 is formed with a gripper recess 6144, and the pipe member 64 is used to be clamped within the clamping position formed by the two gripper recesses 6144.

[0240] The pipeline component 64 is integrally of a U-shaped structure. Both ends of the pipeline component 64 are inserted into the corresponding insertion holes of the fin stack 60 at the same time. In order to improve the clamping stability of the pipeline component 64, each insertion fixture 612 includes two pipeline grippers 614 arranged at intervals. The pipeline grippers 614 on each insertion fixture 612 are used to clamp one side of the pipeline component 64 for insertion.

[0241] At least two insertion devices 600 are arranged at intervals along the conveying direction of the fin conveying line 40 to improve the insertion efficiency of the pipeline component 64.

[0242] In addition to inserting the pipeline component 64, the insertion robot 610 can also disassemble the positioning pin 62. For example but not limited to, after the insertion robot 610 located upstream has inserted part of the pipeline components 64, the fin stack 60 is conveyed to the corresponding position of the downstream insertion robot 610. The downstream insertion robot 610 first disassembles the positioning pin 62 and then inserts the remaining inserted components.

[0243] When disassembling the positioning pin 62, the insertion robot forearm of the insertion robot 610 can rotate 90 degrees, and only one of the pipeline grippers 614 can be used to remove a single positioning pin 62. The movement of the insertion robot forearm is prior art and not the design focus of this application, so it will not be described in detail here.

[0244] After the insertion is completed, the fin stack 60 continues to be conveyed downward to the tube expanding station, and the tube expanding device 43 performs tube expanding operation on the pipeline component 64.

[0245] After the tube expanding is completed, the fin stack 60 is transferred from the fin conveying line 40 to the drying device 44 by the transfer robot 45 for drying operation. After drying is completed, the fin stack 60 is continued to be transferred to the downstream conveying line 42 by the transfer robot 45.

[0246] Reference Figure 40 As shown, the transfer robot 45 includes a transfer robot body and a transfer fixture. The transfer fixture is arranged on the transfer robot body. The transfer fixture includes a transfer middle beam 4501, a transfer driving part 4502 and transfer clamping plates 4503. The transfer middle beam 4501 is connected to the transfer robot body. The transfer driving part 4502 is installed on the transfer middle beam 4501. The transfer driving part 4502 is formed with a first telescopic end and a second telescopic end. The number of the transfer clamping plates 4503 is two, which are respectively arranged on the first telescopic end and the second telescopic end. The transfer clamping plates 4503 are used to clamp the end plate parts 63 at both ends of the fin stack 60.

[0247] On the downstream conveyor line 42, the fin stack 60 is bent and connected through the pipe bending device 46. Specifically, the pipe bending device 46 is a pipe bending robot, whose structure is similar to that of the inserting pipe robot 610. The pipe bending robot grabs the U-shaped pipe and inserts it onto the pipe fitting 64 on the fin stack 60 through mechanical vision positioning.

[0248] It should be noted that when the heat exchanger is an outdoor heat exchanger, it needs to be bent into an L shape in the last step. Therefore, in the inserting pipe bending process, there is a certain height difference between the ends of the two fins of the bent outdoor heat exchanger. So, a certain angle of inclination is required when inserting the bent pipe; for the evaporator, it does not need to be bent, so there is no height difference between the two aluminum sheets that make up the evaporator, and no inclination is required when inserting and connecting the bent pipe.

[0249] When inserting and connecting the bent pipe of the outdoor heat exchanger, the inserting pipe fixture 612 of the inserting pipe robot 610 automatically deflects by a preset angle through the small arm of the inserting pipe robot, and inserts the bent pipe onto the pipe fitting 64. After installing the bent pipe at the end of the fin stack 60, it is conveyed downward to the nitrogen filling station for nitrogen filling operation.

[0250] Reference Figures 41 - 46 , the nitrogen filling device 700 includes a nitrogen filling device 710, a nitrogen filling docking part 720 and a nitrogen filling robot 730. The nitrogen filling device 710 is externally connected to a nitrogen filling pipeline 711. The nitrogen filling docking part 720 is arranged at the end of the nitrogen filling pipeline 711, and a docking channel that gradually expands away from the nitrogen filling pipeline 711 is formed in the nitrogen filling docking part 720.

[0251] The nitrogen filling robot 730 includes a nitrogen filling robot body 731 and a nitrogen filling fixture 732. The nitrogen filling robot 730 is arranged beside the nitrogen filling station on the fin conveyor line 40. The nitrogen filling fixture 732 is arranged on the nitrogen filling robot 730. The nitrogen filling fixture 732 is configured to clamp the nitrogen filling docking part 720 to be docked with the pipe fitting 64 on the fin stack 60 and fill nitrogen into the pipe fitting 64.

[0252] In some embodiments, the nitrogen filling device 710 is arranged in the nitrogen filling room 740. There is an installation opening on the nitrogen filling room 740, and the nitrogen filling pipeline 711 extends from the installation opening to the outside of the nitrogen filling room 740.

[0253] The nitrogen filling room 740 is supported above the nitrogen filling station by legs. The installation opening is arranged on the bottom wall of the nitrogen filling room 740. The nitrogen filling pipeline 711 extends out from directly below the nitrogen filling room 740, and the nitrogen filling docking part 720 is connected to the nitrogen filling pipeline 711.

[0254] Specific reference Figure 44 、 Figure 45, in some embodiments of the present application, the nitrogen charging docking member 720 is detachably connected to the nitrogen charging pipeline 711. One end of the nitrogen charging docking member 720 connected to the nitrogen charging pipeline 711 is provided with a connection end portion, an internal thread is formed on the inner wall of the connection end portion, an external thread is formed on the end portion of the nitrogen charging pipeline 711, and the nitrogen charging pipeline 711 is threadedly connected inside the connection end portion.

[0255] During the nitrogen charging process, the nitrogen charging robot 730 clamps the nitrogen charging pipeline 711 above the nitrogen charging docking member 720, pulls down the nitrogen charging pipeline 711 to the pipeline member 64, and the pipeline member 64 is guided into the nitrogen charging pipeline 711 through the nitrogen charging docking member 720 and connected to the nitrogen charging pipeline 711. Then, the nitrogen charging device 710 transports nitrogen into the pipeline member 64.

[0256] In order to accurately guide the pipeline member 64 into the nitrogen charging pipeline 711, the minimum inner diameter dimension in the docking channel is not greater than the inner diameter dimension of the nitrogen charging pipeline 711.

[0257] Reference Figure 46 , in some other embodiments, the nitrogen charging docking member 720 and the nitrogen charging pipeline 711 are integrally formed, and the nitrogen charging docking member 720 is in a horn shape as a whole.

[0258] Reference Figure 47 , in some other embodiments, in order to realize the automatic upward reset of the nitrogen charging pipeline 711 after nitrogen charging, it is designed that an elastic member 750 is arranged between the nitrogen charging pipeline 711 and the nitrogen charging chamber 740. One end of the elastic member 750 is fixed on the inner wall of the nitrogen charging chamber 740, and the other end is connected to the nitrogen charging pipeline 711 located inside the nitrogen charging chamber 740. When the nitrogen charging pipeline 711 moves outward to the state of docking with the pipeline member 64, the elastic member 750 is compressed. After the nitrogen charging is completed, the nitrogen charging robot 730 releases the nitrogen charging pipeline 711, and the elastic member 750 drives the nitrogen charging pipeline 711 to move upward and reset under the action of its own restoring force.

[0259] In some other embodiments, an elastic member 750 is arranged between the nitrogen charging pipeline 711 and the nitrogen charging chamber 740. One end of the elastic member 750 is fixed outside the installation opening, and the other end is connected to the nitrogen charging pipeline 711 located outside the nitrogen charging chamber 740. When the nitrogen charging pipeline 711 moves outward to the state of docking with the pipeline member 64, the elastic member 750 is stretched. After the nitrogen charging is over, the nitrogen charging robot 730 releases the nitrogen charging pipeline 711, and the elastic member 750 drives the nitrogen charging pipeline 711 to move upward and reset under the action of its own restoring force.

[0260] In some other embodiments, an elastic pipe section is formed on the nitrogen charging pipeline 711 to realize the telescopic movement of the nitrogen charging pipeline 711 relative to the installation opening.

[0261] The flexible pipe section is at least one section of the nitrogen filling pipeline 711. In the nitrogen filling state, the flexible pipe section is elongated. After the nitrogen filling is completed, the flexible pipe section retracts under its own elastic action to realize the upward reset of the nitrogen filling docking part 720.

[0262] The nitrogen filling clamp 732 includes a clamping driving part and a jaw assembly 733 connected to the clamping driving part. The jaw assembly 733 includes a first jaw 7331 and a second jaw 7332 which are symmetrically arranged. Clamping recesses 7333 are formed on both the first jaw 7331 and the second jaw 7332. The size of the clamping recesses 7333 is adapted to the outer diameter of the nitrogen filling pipeline 711, and the nitrogen filling pipeline 711 is used to be clamped between the clamping recesses 7333.

[0263] The specific connection of the clamping driving part to the first jaw 7331 and the second jaw 7332 and the realization of the opening and closing of the first jaw 7331 and the second jaw 7332 are prior arts and will not be described in detail here.

[0264] Similarly, the nitrogen filling robot body 731 also includes a nitrogen filling robot body 731 which includes a nitrogen filling robot 730 base, a nitrogen filling robot 730 big arm and a nitrogen filling robot 730 small arm connected in sequence.

[0265] In addition, the nitrogen filling robot 730 also includes a robot motor and a vision camera. The nitrogen filling robot 730 base is fixed to the ground by bolts, the robot motor is connected to the nitrogen filling robot 730 base by bolts. The nitrogen filling robot 730 base, the nitrogen filling robot 730 big arm and the nitrogen filling robot 730 small arm are all connected by sliding joints. The vision camera is arranged on the nitrogen filling clamp 732 and is used to obtain the position information of the fin stack 60 and the positioning pin 62.

[0266] After the nitrogen filling is completed, the fin conveying line 40 drives the fin stack 60 forward to the welding station for welding, and then conveys it to the helium leak detection station for welding state detection. When the heat exchanger is an outdoor heat exchanger, after the helium leak detection is completed, the fin stack 60 also needs to be bent by the bending device 49, and finally the heat exchanger is formed.

[0267] In the description of the above embodiments, the specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples. The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An intelligent production line for air conditioner outdoor units, characterized in that: Included are: Assembly line, including: A plurality of assembly stations, any of which is equipped with a first robot, the first robot being configured to automatically complete a work task at the assembly station; a first conveyor line, wherein the plurality of assembly stations are arranged in sequence along a conveying direction of the first conveyor line, and the first conveyor line is configured to convey materials; Material supply lines, including: A material bin is configured to store materials required for the assembly line. Materials required for any assembly station are placed in the material bin using a material frame as a storage unit. A plurality of material placement areas are provided in the material bin. a second conveying line, configured to convey the material frame; a second robot configured to transfer the material frame between the material bin and the second conveying line; Wherein, the material frame is configured to be transferred between the first conveying line and the second conveying line.

2. The intelligent production line of air conditioner outdoor unit according to claim 1, characterized in that: The material frame is provided with a first identification code, the material placement area is provided with a second identification code, and the first identification code, the second identification code and the assembly station have a one-to-one correspondence; A first visual inspection device is provided on the assembly station, and the first visual inspection device is configured to detect the first identification code; The second robot is provided with a second visual detection device, and the second visual detection device is configured to detect the second identification code.

3. The intelligent production line of air conditioner outdoor unit according to claim 1, characterized in that: When the material box placed on the assembly station is empty, the assembly station sends a refill request to the control terminal, the control terminal sends a refill instruction to the material supply line, the second robot takes the material box in the material bin and places it on the second conveyor line, and the material box is transported to the corresponding assembly station via the first conveyor line.

4. The intelligent production line for air conditioner outdoor units according to claim 1, characterized in that: The second conveying line includes an AGV, the second robot is configured to transfer the material frame between the material warehouse and the AGV, and the AGV is configured to transport the material frame to the first conveying line.

5. The intelligent production line for outdoor units of air conditioners according to any one of claims 1 to 4, characterized in that: The plurality of assembly stations are arranged in at least two space areas, the at least two space areas are arranged in a vertical direction, and materials are transported between two space areas adjacent to each other vertically through a first transport device.

6. The intelligent production line for air conditioner outdoor units according to claim 5, characterized in that: Along the material conveying direction, the first conveying line located in any of the spatial areas transfers the empty material frames between the last assembly station and the second conveying line.

7. The intelligent production line for air conditioner outdoor units according to claim 5, characterized in that: Along the material conveying direction, the first conveying line located in any of the spatial areas transfers the fully loaded material frames between the first assembly station and the second conveying line.

8. The intelligent production line for air conditioner outdoor units according to claim 5, characterized in that: The material supply line includes a plurality of sub-material supply lines, and the plurality of sub-material supply lines are arranged corresponding to the plurality of space areas.

9. The intelligent production line for outdoor units of air conditioners according to any one of claims 1 to 4, characterized in that: The assembly line includes an outdoor heat exchanger installation station, a heat exchanger installation robot is provided at the outdoor heat exchanger station, and a heat exchanger fixture is provided on the heat exchanger installation robot; The outdoor heat exchanger is placed in the material frame in a vertical position, and the heat exchanger clamp is configured to clamp the outdoor heat exchanger and the material frame.

10. The intelligent production line for air conditioner outdoor units according to claim 9, characterized in that: The outdoor heat exchanger includes a heat exchanger section 1, a heat exchanger section 2 and a heat exchanger section 3 which are connected in sequence, the heat exchanger section 1 and the heat exchanger section 3 are arranged opposite to and in parallel, and the heat exchanger section 2 is arc-shaped; The outdoor heat exchanger is placed in a vertical posture in the material frame, and the interior of the material frame for placing the outdoor heat exchanger is provided with a first limiting portion and a second limiting portion arranged relatively to each other, the first limiting portion is configured to limit the end of one section of the heat exchanger, the second limiting portion is configured to limit the second section of the heat exchanger, and the heat exchanger clamp is configured to clamp the first section of the heat exchanger.

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