Three-phase grid-connected inverter production line

Abstract

The invention relates to the technical field of intelligent production lines, in particular to a three-phase grid-connected inverter production line, which comprises an assembling section, a testing section and a conveying device, and is characterized in that the testing section is provided with a first testing part, an aging testing part, a second testing part and a temporary storage warehouse; the aging test part is used for carrying out aging test on the products subjected to the plug wire on-machine operation and the first function test, the second test part is used for carrying out second function test and plug wire off-machine operation on the products subjected to the aging test, and the temporary storage warehouse is used for temporarily storing the products; the operation time period of the assembly section is set as a white shift time period; and the operation time period of the test section is set as an all-day time period. In conclusion, the overall production efficiency is effectively improved, the labor intensity of workers is reduced, the production line manufacturing cost is reduced, and the operation quality of a production line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent production lines, and in particular to a three-phase grid-connected inverter production line. Background Art

[0002] In the current field of inverter production, with the continuous growth of the market demand for three-phase grid-connected inverters, the consideration of the efficiency, stability of its production line and the labor intensity of workers has become increasingly crucial. There are many problems to be solved urgently in the traditional three-phase grid-connected inverter production line. On the one hand, in terms of the production operation mode, some production lines adopt the assembly method of combining more workers with automated equipment. If they operate all day long, it will lead to excessive labor intensity of workers. Especially, working overtime at night has an adverse impact on the physical and mental health and work efficiency of workers. However, if they only operate during the day, it is difficult to meet the growing production capacity requirements. For example, in some assembly sections, due to heavy reliance on manual operations, workers are prone to fatigue after long-term continuous work, which in turn affects the product assembly quality and production efficiency. On the other hand, from the perspective of the testing link, during functional testing or aging testing, the conversion of products between different jigs and the plugging and unplugging operations of test cables and product interfaces are difficult to automate because of the high degree of freedom and relative complexity of the operations, and often need to be manually completed, which limits the overall automation degree of the testing process. Moreover, the unreasonable setting of the aging test storage locations will cause production capacity bottlenecks and cannot efficiently match the production capacity of the assembly section. In addition, the connection between different production links (assembly, testing, packaging) is not smooth enough, and the use of jigs lacks unified planning, resulting in the high overall construction cost of the production line. To sum up, the existing three-phase grid-connected inverter production line has obvious defects in terms of production efficiency, labor intensity of workers, testing process and cost control, and there is an urgent need for an innovative production line technical solution to improve these situations. Summary of the Invention The present invention aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.

[0003] The present invention provides a three-phase grid-connected inverter production line, comprising an assembly section, a test section and a conveying device, wherein the assembly section performs assembly and production operations on products, the test section performs functional tests and aging tests on products, and the conveying device performs conveying operations on fixtures and products; the test section is provided with a first test section, an aging test section, a second test section and a temporary storage warehouse, the first test section performs a plug-in operation and a first functional test on the assembled products, the aging test section performs an aging test on the products after the plug-in operation and the first functional test, the second test section performs a second functional test and a plug-out operation on the products after the aging test, and the temporary storage warehouse is used for temporarily storing the products; the operating time period of the assembly section is set as a day shift period; the operating time period of the test section is set as a full-day period.

[0004] Furthermore: it also includes a packaging section, which is arranged after the second testing section along the product conveying direction of the production line, and is used to pack and ship the products after the wire is pulled out and the machine is unloaded. Its operating time period is set to the day shift period.

[0005] Furthermore: the temporary storage warehouse temporarily stores the products after assembly or after unplugging.

[0006] Furthermore: the first transfer mechanism of the conveying device is arranged between the assembly section, the temporary storage warehouse and the wire insertion machine station, and the second transfer mechanism is arranged between the wire removal machine station, the temporary storage warehouse and the packaging section.

[0007] Furthermore: the operating time periods of the plug-in and offline workstation of the first test section and the unplug-wire and offline workstation of the second test section are both set to the day shift; the operating time periods of the first functional test equipment of the first test section and the second functional test equipment of the second test section are both set to the whole day, the operating time periods of the aging test section and the temporary storage warehouse are both set to the whole day, and the temporary storage warehouse temporarily stores the products after plugging in or the products after the second functional test.

[0008] Further: the first transfer mechanism of the conveying device is arranged between the wire insertion machine station, the temporary storage warehouse and the first functional testing equipment, and the second transfer mechanism is arranged between the second functional testing equipment, the temporary storage warehouse and the wire removal machine station.

[0009] Furthermore: the operating time periods of the first test section and the second test section are both set to the day shift; the operating time periods of the aging test section and the temporary storage warehouse are both set to the whole day, and the temporary storage warehouse temporarily stores products after completing the first functional test or the products after completing the aging test.

[0010] Further: the first transfer mechanism of the conveying device is arranged between the first test section, the temporary storage warehouse and the aging test section, and the second transfer mechanism is arranged between the aging test section, the temporary storage warehouse and the second test section.

[0011] Further: It is characterized in that the first transfer mechanism of the conveying device is provided with a side line body and a movable line body, the side line body is fixedly connected to the production line, and the two sides of the movable line body are detachably fixedly connected to the side line body, thereby respectively docking the side line bodies on both sides to form an overall transfer mechanism that can convey jigs and products.

[0012] Further: It is characterized in that the conveying device is provided with an upper conveying track and a lower return track, the upper conveying track conveys the jigs and products, and the lower return track returns the emptied jigs; the jigs are transferred between the upper conveying track and the lower return track by a lifting device.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In terms of improving production efficiency, by setting the assembly section to operate in the day shift and the test section to operate 24 hours a day, the advantages of automated equipment can be fully utilized. For example, three assembly sections are set to produce simultaneously in the day shift, combined with the reasonable batch arrangement and warehouse location setting of the aging test department, the inverter output can be greatly increased. Taking the day shift capacity of an assembly section of 300 units as an example, three assembly sections can assemble 900 units in one day shift. The aging test department can meet its testing needs by reasonably planning warehouse locations and batches, effectively improving overall production efficiency. In terms of reducing the labor intensity of workers, the assembly section and packaging section are set to operate during the day shift to avoid workers working overtime at night. For the plug-in and unplug-out stations in the test section that require manual operation, workers are reasonably arranged to work in three shifts or set during the day shift, which reduces the night shift working time of workers and greatly reduces the labor intensity of workers. The cost control effect is significant. By optimizing the use of jigs, using assembly jigs or packaging jigs to store products, the amount of test jigs used can be reduced, reducing procurement costs. At the same time, the number of functional test equipment can be reasonably adjusted according to different implementation examples to avoid unnecessary equipment investment and further reduce production line manufacturing costs. In terms of product quality assurance, in the third embodiment, the functional test phase with the most NG conditions is set during the day shift, which is convenient for maintenance personnel to repair NG products in a timely manner, effectively reducing the number of defective products and improving product yield. In addition, the reasonable setting of the conveying device, such as the movable line design of the first transfer mechanism, not only ensures the convenience of handling the test section cabinet, but also improves the safety of production line operation, ensuring and improving the operation quality of the entire production line from many aspects.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a schematic flow chart of a first embodiment of the present invention; Figure 2 is a schematic flow chart of a second embodiment of the present invention; Figure 3 is a schematic diagram of a flow chart of a third embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the assembly section, the testing section and the packaging section of the present invention; Figure 5 It is a schematic diagram of the structure of the upper conveying track and the lower return track of the present invention; Figure 6 It is a structural schematic diagram of the handling equipment and the translation lifting equipment of the present invention; Figure 7 It is a structural schematic diagram of the lifting device of the present invention; Figure 8 It is a structural schematic diagram of the translation and rotation device of the present invention; Fig. 9 It is a structural schematic diagram of the assembly jig and the product of the present invention; Fig.10 It is a structural schematic diagram of the test fixture and product of the present invention; Fig.11 It is a structural schematic diagram of the side line body and the movable line body of the present invention; Fig.12 It is a schematic diagram of the path of movement of the electric cabinet of the present invention; Fig.13 It is a structural schematic diagram of the test section of the present invention; Fig.14 It is a schematic diagram of the structure of the aging test part and the transport trolley of the present invention; Fig.15 It is a structural schematic diagram of the air circulation system of the present invention; Fig.16 It is a structural schematic diagram of the vertical warehouse trolley of the present invention.

[0017] The reference numerals and names in the figures are as follows: 10 assembly section; 11 assembly fixture; 12 packaging section; 20 testing section; 21 testing fixture; 22 temporary storage warehouse; 23 vertical warehouse trolley; 24 defective product station; 30 first testing department; 31 plug-in station; 32 first functional testing equipment; 40 aging testing department; 41 transport trolley; 42 air circulation system; 50 second testing department; 51 second functional testing equipment; 52 pull-out station; 60 conveying device; 61 upper conveying track; 62 lower return track; 63 lifting equipment; 64 handling equipment; 65 translation lifting equipment; 66 translation rotating equipment; 70 first transfer mechanism; 71 side line body; 72 movable line body; 73 second transfer mechanism; 80 products. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 16 In an embodiment of the present invention, a three-phase grid-connected inverter production line includes an assembly section 10, a test section 20 and a conveying device 60, wherein the assembly section 10 performs assembly and production operations on a product 80, the test section 20 performs functional testing and aging testing operations on the product 80, and the conveying device 60 performs conveying operations on a fixture and a product 80; the test section 20 is provided with a first test section 30, an aging test section 40, a second test section 50 and a temporary storage warehouse 22, wherein the first test section 30 performs a plug-in operation and a first functional test on the assembled product 80, the aging test section 40 performs an aging test on the product 80 after the plug-in operation and the first functional test, the second test section 50 performs a second functional test and a plug-out operation on the product 80 after the aging test, and the temporary storage warehouse 22 is used to temporarily store the product 80; the operating time period of the assembly section 10 is set to the day shift period; the operating time period of the test section 20 is set to the full-day period.

[0020] Specifically, the assembly section 10 is operated by combining more workers with automated equipment, so it is set to operate during the day shift to avoid more workers working overtime at night and reduce the labor intensity of workers. The test section 20 uses a large number of automated equipment and has very few workers, so it can be operated 24 hours a day to increase its operating time for testing, thereby improving the production efficiency of the entire production line.

[0021] Secondly, when the product 80 is assembled and produced in the assembly section 10, it is placed on the assembly jig 11 for transportation and production, and when it is tested in the test section 20, it is placed on the test jig 21 for transportation and testing, and when it is packaged in the packaging section 12, it is placed on the packaging jig for transportation and packaging. Since the packaging section 12 only places the product 80 for easy grasping and packaging, the assembly jig 11 can be directly used instead. Because before performing functional testing or aging testing, the product 80 needs to be placed and docked on the corresponding test jig 21, when the product 80 is transported from the assembly jig 11 to the corresponding test jig 21 by the automated equipment, the worker needs to pick up the test cable on the test jig 21 and insert or unplug it at the corresponding interface of the product 80 to be tested. This operation has a high degree of freedom and is relatively complex. It is not convenient to use automated equipment and workers need to be arranged to perform manual operations.

[0022] Therefore, it is necessary to arrange workers to perform plug-in and plug-in operations at the plug-in and plug-out stations 31 of the first test section 30, and to arrange workers to perform plug-in and plug-out operations at the plug-in and plug-out stations 52 of the second test section 50. The workers at the two stations can adopt a three-shift work cycle to achieve plug-in and plug-out operations of the test fixture 21 on the product 80 at all times of 24 hours.

[0023] Again, in order to improve production efficiency, for example, three assembly sections 10 can be set to produce simultaneously during the day shift. The production capacity of one assembly section 10 during the entire day shift is 300 units. If the three assembly sections 10 produce simultaneously, 900 inverter products 80 can be assembled and produced during one day shift. The aging time of the aging test is 3 hours, and 8 batches of aging tests can be performed 24 hours a day. Therefore, only 113 test locations for the aging test are required to meet the aging test requirements of the three assembly sections 10. Considering that the inverter product 80 will take a certain amount of time when entering and leaving the aging test location, it can be set to perform 7 batches of aging tests throughout the day, that is, only 129 test locations are required at least.

[0024] In addition, since the aging test section 40 operates continuously 24 hours a day, it is not necessary to specifically distinguish whether to use 7 or 8 batches. In order to enhance the flexibility of the aging test section 40, the number of aging test storage locations can also be set relatively large, such as 200 test storage locations. Based on the same consideration, the number of storage locations in the temporary storage warehouse 22 can also be increased accordingly, such as 780 temporary storage locations.

[0025] like Figure 4As shown, preferably, it also includes a packaging section 12, which is arranged behind the second testing section 50 along the conveying direction of the product 80 of the production line, and performs packaging and shipping operations on the product 80 after the wire is pulled out and the machine is unloaded, and its operating time period is set to the day shift period.

[0026] Specifically, the packaging section 12 can also be operated by combining workers with automated equipment, and is also set to operate during the day shift to avoid workers working overtime at night and reduce the labor intensity of workers. The daily packaging and shipment capacity of a packaging section 12 is 300 units, so three packaging section 12 production lines can be set to achieve a daily capacity of 900 units.

[0027] In the first embodiment, Figure 1 and Figure 4 As shown, preferably, the temporary storage warehouse 22 temporarily stores the products 80 after assembly or the products 80 after unplugging.

[0028] Specifically, since the first test section 30 and the second test section 50 also operate throughout the day, relatively fewer test positions can be set. For example, 10 test positions are set respectively. The functional test time of each test position is 10 minutes, plus the time for plugging in or unplugging the line, each product 80 requires about 12 minutes in the first test section 30 or the second test section 50. One test position can test 5 products 80 per hour, 10 test positions can test 50 products 80 per hour in total, and 1,200 products 80 can be tested in total in 24 hours, which can fully meet the assembly and production capacity of the three assembly sections 10 during the day shift.

[0029] Secondly, since all the production capacity of the assembly section 10 is completed during the day shift, a portion of the products 80, after assembly production, flow directly into the first testing section 30 through the conveying device 60 together with the assembly jig 11. After the wiring machine station 31 is replaced with the test jig 21, the first functional test is carried out, followed by an aging test, and then a second functional test. Qualified products 80 are unplugged from the test jig 21 and finally placed in a packaging jig and flow directly into the packaging section 12 for packaging and shipment.

[0030] Again, some of the assembled products 80 can continue to be placed in the assembly jig 11 and directly flow into the temporary storage warehouse 22 through the conveying device 60 for storage. After waiting for the end of the day shift, if there are no new products 80 flowing into the test section 20 from the assembly section 10, the products 80 stored in the temporary storage warehouse 22 can be taken out again and flow to the test section 20. After replacing the test jig 21, the plug-in operation is performed, and then the functional test and aging test are performed. After the test is completed, the qualified products 80 are unplugged from the test jig 21 and then replaced with the packaging jig, and then flow into the temporary storage warehouse 22 through the conveying device 60 for storage. After waiting for the day shift, take them out again and flow to the packaging section 12 for packaging and shipment.

[0031] In addition, this embodiment still requires at least two workers to work in the night shift at the workstations for plugging in or unplugging, which is not very friendly to workers. However, the construction cost of the production line can be saved because the test positions of the first test section 30 and the second test section 50 can be reduced respectively, and the use of the test fixture 21 can be reduced. The product 80 can be stored using the assembly fixture 11 or the packaging fixture. The purchase cost of the assembly fixture 11 or the packaging fixture is lower than that of the test fixture 21, which can further reduce the manufacturing cost of the production line.

[0032] like Figure 1 , Figure 4 and Fig.13 As shown, preferably, the first transfer mechanism 70 of the conveying device 60 is arranged between the assembly section 10, the temporary storage warehouse 22 and the wire insertion machine station 31, and the second transfer mechanism 73 is arranged between the wire removal machine station 52, the temporary storage warehouse 22 and the packaging section 12.

[0033] Specifically, the first transfer mechanism 70 can transport the product 80 produced by the assembly section 10 and the assembly jig 11 to the temporary storage warehouse 22 for temporary storage, or transport them to the wire insertion machine station 31 of the first test section 30, so that the product 80 is replaced with the test jig 21 and then the corresponding test operation is performed. The second transfer mechanism 73 can transport the tested product 80 together with the packaging jig to the temporary storage warehouse 22 for temporary storage, or transport them to the packaging section 12 for packaging and shipment.

[0034] In the second embodiment, if Figure 2As shown, preferably, the operating time periods of the plug-in station 31 of the first test section 30 and the unplug-wire station 52 of the second test section 50 are both set to the day shift; the operating time periods of the first functional test equipment of the first test section 30 and the second functional test equipment of the second test section 50 are both set to the whole day, and the operating time periods of the aging test section 40 and the temporary storage warehouse 22 are both set to the whole day, and the temporary storage warehouse 22 temporarily stores the products 80 after plug-in or the products 80 after the second functional test.

[0035] Specifically, in the first embodiment described above, since the plug-in machine of the first test section 30 and the unplug-out machine station 52 of the second test section 50 still need to arrange workers to work 24 hours a day, it is equivalent to still requiring workers to work night shifts. For further optimization, in the second embodiment, the operation time period of the plug-in machine station 31 of the first test section 30 and the unplug-out machine station 52 of the second test section 50 are both set to the day shift period. By taking advantage of the relatively short time of the plug-in machine operation and the unplug-out machine operation, the assembled products 80 can complete the plug-in machine operation during the day shift period, and then a part of them will directly flow into the first test section 30 for the first functional test, and then flow into the aging test section 40 for the aging test, and finally the second functional test and unplug-out machine operation are carried out, and the qualified products 80 will directly flow into the packaging section 12 for packaging and shipment operations.

[0036] Secondly, some products 80 that have been plugged in and put on the machine are then transferred to the temporary storage warehouse 22 together with the test fixture 21 through the conveying device 60 for storage. When waiting for the end of the day shift and no new products 80 are flowing to the first functional test equipment 32, the products 80 and the test fixture 21 in the temporary storage warehouse 22 are taken out again, flow into the first functional test equipment 32 through the conveying device 60 for the first functional test, and then flow into the aging test section 40 for the aging test, and finally the second functional test. After completion, the offline operation is not performed, but the products 80 and the test fixture 21 are again transferred to the temporary storage warehouse 22 for storage through the conveying device 60. Waiting for the next day shift, the products 80 and the test fixture 21 that have completed all tests are taken out from the temporary storage warehouse 22 again, flow into the offline station 52, and then the offline operation is performed, and finally replaced with packaging fixtures, and flow to the packaging section 12 for packaging and shipment.

[0037] like Figure 2 As shown, preferably, the first transfer mechanism 70 of the conveying device 60 is arranged between the wire insertion machine station 31, the temporary storage warehouse 22 and the first functional testing equipment 32, and the second transfer mechanism 73 is arranged between the second functional testing equipment 51, the temporary storage warehouse 22 and the wire removal machine station 52.

[0038] Specifically, in the second embodiment, the first transfer mechanism 70 can transport the product 80 and the test fixture 21 after the plug-in to the temporary storage warehouse 22 for temporary storage operation; or transport them to the first functional test equipment 32 for corresponding test operation. The second transfer mechanism 73 can transport the product 80 and the test fixture 21 after the second functional test to the temporary storage warehouse 22 for temporary storage operation; or transport them to the unplugging and unplugging station 52 for unplugging and unplugging operation, and finally transport them to the packaging section 12 for packaging and shipping operation.

[0039] Secondly, in the second embodiment, although the amount of test fixtures 21 is increased, the time period for workers to work at night can be reduced, which is more friendly to workers. In addition, the number of test positions is not increased, and only the setting position of the transfer mechanism of the conveying device 60 needs to be appropriately adjusted.

[0040] In the third embodiment, Figure 3 As shown, preferably, the operating time periods of the first test section 30 and the second test section 50 are both set to the day shift period; the operating time periods of the aging test section 40 and the temporary storage warehouse 22 are both set to the whole day period, and the temporary storage warehouse 22 temporarily stores the products 80 after completing the first functional test or the products 80 after completing the aging test.

[0041] Specifically, the relatively short time of the functional test can be utilized to directly set the operation time periods of the entire first test section 30 and the entire second test section 50 to the day shift period, so that the assembled products 80 can all complete the plug-in and first functional test operations during the day shift period, and a part of them can directly flow into the aging test section 40 for aging test, and then carry out the second functional test and unplugging and disconnecting operations, and the qualified products 80 can directly flow into the packaging section 12 for packaging and shipment operations.

[0042] Secondly, some products 80 that have been plugged in and tested for the first time are stored in the temporary warehouse 22 together with the test fixture 21 through the conveying device 60. When the day shift is over and no new products 80 flow to the aging test section 40, the products 80 and the test fixture 21 in the temporary warehouse 22 are taken out again and flow into the aging test section 40 through the conveying device 60 for aging testing. After the aging test is completed, the products 80 and the test fixture 21 are again flowed into the temporary warehouse 22 for storage through the conveying device 60. When the day shift of the next day is approaching, the products 80 and the test fixture 21 that have completed the aging test flow into the second test section 50 for the second functional test, and then the unplugging operation is performed. Finally, the qualified products 80 are replaced with packaging fixtures and flow to the packaging section 12 for packaging and shipment.

[0043] like Figure 3As shown, preferably, the first transfer mechanism 70 of the conveying device 60 is disposed between the first test section 30, the temporary storage warehouse 22 and the aging test section 40, and the second transfer mechanism 73 is disposed between the aging test section 40, the temporary storage warehouse 22 and the second test section 50.

[0044] Specifically, in the third embodiment, the first transfer mechanism 70 can convey the product 80 and the test fixture 21 after the first functional test to the temporary storage warehouse 22 for temporary storage operation; or convey them to the aging test section 40 for aging test operation. The second transfer mechanism 73 can convey the product 80 and the test fixture 21 after the aging test to the temporary storage warehouse 22 for temporary storage operation; or convey them to the second test section 50 for the second functional test and off-line operation, and finally convey them to the packaging section 12 for packing and shipping operation.

[0045] Secondly, in the third embodiment, since both the first test section 30 and the second test section 50 are arranged to work during the day shift, it is necessary to correspondingly increase the test equipment at the test positions. Similarly, one test position can test 5 products 80 per hour. Assuming an 8-hour workday during the day shift, 23 test positions can be set, and 920 products 80 can complete the functional test during the entire day shift, thus meeting the functional test of 900 inverter products 80 produced by the three assembly sections 10. Although the usage of test fixtures 21 and test equipment is increased, the working hours of workers during the night shift can be reduced, which is more worker-friendly. Moreover, setting the functional test stage with the most NG situations during the day shift is also more convenient for maintenance personnel to repair the NG products 80 again, ultimately reducing defective products and improving the yield rate of the products 80. A defective product station 24 can also be set in the test section 20 to collect and repair defective products that occur in different test stages.

[0046] As Fig.11 and Fig.12 shown, preferably, the first transfer mechanism 70 of the conveying device 60 is provided with a side line body 71 and a movable line body 72. The side line body 71 is fixedly connected to the production line, and both sides of the movable line body 72 are respectively detachably fixedly connected to the side line body 71, so as to respectively dock the side line bodies 71 on both sides to form an overall transfer mechanism capable of conveying the fixture and the product 80.

[0047] Specifically, in order to improve safety, the area of ​​the simulated electric cabinet and the aging electric cabinet of the test section 20 can be set as a closed space to prevent workers from entering by mistake. In order to normally transport the electric cabinet in the early stage of building the production line or when replacing and repairing the electric cabinet in the later stage, a movable wire body 72 can be set at the first transfer mechanism 70 of the conveying device 60. That is, when necessary, the movable wire body 72 can be unlocked from the conveying device 60 and moved to a suitable position of the assembly section 10, which is equivalent to opening a gap in the conveying device 60 so that the electric cabinet can be normally transported from the gap.

[0048] Secondly, the setting of the movable wire body 72 is mainly to realize that the electrical cabinet of the test section 20 can be moved out of the test area), wherein the connection between the movable wire body 72 and the side wire body 71 can be quickly locked using existing technology; and a manual button can be configured at the side track of the side wire body 71. After turning on the button, the existing fixtures in the movable wire body 72 can be automatically emptied under the automatic control of the central control system, thereby facilitating the movement of the movable wire body 72; then an indicator light is configured on the side track. When the green light is on, the power supply of the movable wire body can be unplugged, and the movable wire body 72 can be pushed to move accordingly.

[0049] like Figure 5 As shown, preferably, the conveying device 60 is provided with an upper conveying track 61 and a lower return track 62, the upper conveying track 61 is used to convey the jig and the product 80, and the lower return track 62 is used to return and convey the emptied jig; the jig is transferred between the upper conveying track 61 and the lower return track 62 by a lifting device 63.

[0050] Specifically, the conveying device 60 is along the production direction of the assembly section 10, and its upper conveying track 61 sequentially conveys the assembly jig 11 with the product 80 placed thereon, and then sequentially conveys it to each workstation for corresponding assembly production operations. After the assembly production is completed, the conveying device 60 conveys the assembly jig 11 and the product 80 to the first transfer mechanism 70, so that it conveys the product 80 to the temporary storage warehouse 22 or the first testing section 30, and the emptied jig returns to the starting position of the assembly section 10 through the lower return track 62 and is recycled again.

[0051] Secondly, it can be understood that similar upper conveying tracks 61, lower return tracks 62 and lifting devices 63 can also be set in the first transfer mechanism 70, the second transfer mechanism 73, the testing section 20 and the packaging section 12 to perform corresponding conveying operations on the fixture and the product 80, which will not be repeated here.

[0052] like Figure 6 , Figure 7 and Figure 8As shown, preferably, the conveying device 60 is also provided with a handling device 64, a translation and lifting device 65 and a translation and rotation device 66, wherein the handling device 64 is used to carry the product 80 between the assembly jig 11, the test jig 21 or the packaging jig; the translation and lifting device 65 is used to perform translation and lifting operations on the jig; and the translation and rotation device 66 is used to perform translation and rotation operations on the jig. The first functional test and the second functional test can adopt the ATE functional test cabinet equipment in the prior art, which integrates the functions of precision instruments such as electronic load, DC power supply, AC power supply, AC electronic load, etc. into a professional customized automatic test system, which is specially designed for the research and development and production of photovoltaic inverters for testing and verification, with simple operation and high test coverage. The test items comply with the relevant standards of electrical preliminary tests of EN50530, Sandia, NB / T32004, CGC / GF004, CGC / GF035, IEEE1547, 1547.1, UL1741, and China's national standard GB / T19939.

[0053] like Fig.13 , Fig.14 and Fig.15 As shown, preferably, the aging test section 40 uses a 30KW photovoltaic simulation power supply in the prior art to convert AC power into DC power for use by the inverter product 80. It also includes a transport trolley 41 and an air circulation system 42. The transport trolley 41 is used to automatically transport the test fixture 21 and the product 80. The air circulation system 42 is used to blow in cold air and exhaust hot air, so that the temperature of the entire aging test section 40 is maintained at about 45 degrees.

[0054] like Fig.16 As shown, preferably, the temporary storage warehouse 22 can adopt a three-dimensional warehouse in the prior art, such as a multi-layer, multi-column, and multi-row structure, and an embedded track is arranged therein, and a three-dimensional warehouse trolley 23 is arranged on the embedded track, so that it can move the fixtures and products 80 in the temporary storage warehouse 22.

[0055] like Figure 4 As shown, preferably, three packaging lines can also be set up in the packaging section 12 to perform packaging operations simultaneously, and a handling device 64, a translation lifting device 65 and a translation rotating device 66 can also be set up to carry the product 80 from different jigs and convey it from different heights and angles. The packaging section 12 can use manual boxing and palletizing, or can use a combination of manual and mechanical arms to achieve automatic palletizing.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A three-phase grid-connected inverter production line, characterized in that: The invention comprises an assembly section (10), a test section (20) and a conveying device (60), wherein the assembly section (10) performs an assembly production operation on a product (80), the test section (20) performs a function test and an aging test on the product (80), and the conveying device (60) performs a conveying operation on a fixture and a product (80); the test section (20) is provided with a first test section (30), an aging test section (40), a second test section (50) and a temporary storage warehouse (22), wherein the first test section (30) performs a plug-in operation and a first function test on the assembled product (80), the aging test section (40) performs an aging test on the product (80) after the plug-in operation and the first function test, the second test section (50) performs a second function test and a plug-out operation on the product (80) after the aging test, and the temporary storage warehouse (22) is used to temporarily store the product (80); the operating time period of the assembly section (10) is set as the day shift period; and the operating time period of the test section (20) is set as the whole day period.

2. A three-phase grid-connected inverter production line according to claim 1, characterized in that: It also includes a packaging section (12), which is arranged behind the second testing section (50) along the product (80) conveying direction of the production line, and performs packaging and shipping operations on the products (80) after the wire is pulled out and the machine is unloaded, and its operating time period is set to the day shift period.

3. A three-phase grid-connected inverter production line according to claim 2, characterized in that: The temporary storage warehouse (22) temporarily stores the products (80) after assembly or the products (80) after being unplugged.

4. A three-phase grid-connected inverter production line according to claim 3, characterized in that: The first transfer mechanism (70) of the conveying device (60) is arranged between the assembly section (10), the temporary storage warehouse (22) and the wire insertion machine station (31), and the second transfer mechanism (73) is arranged between the wire removal machine station (52), the temporary storage warehouse (22) and the packaging section (12).

5. A three-phase grid-connected inverter production line according to claim 1, characterized in that: The operating time periods of the plug-in and disconnection station (31) of the first test section (30) and the unplug-and disconnection station (52) of the second test section (50) are both set to the day shift period; the operating time periods of the first functional test equipment of the first test section (30) and the second functional test equipment of the second test section (50) are both set to the whole day period; the operating time periods of the aging test section (40) and the temporary storage warehouse (22) are both set to the whole day period; the temporary storage warehouse (22) temporarily stores the products (80) after the plug-in and disconnection or the products (80) after the second functional test.

6. A three-phase grid-connected inverter production line according to claim 5, characterized in that: The first transfer mechanism (70) of the conveying device (60) is arranged between the wire plugging machine station (31), the temporary storage warehouse (22) and the first functional testing equipment (32), and the second transfer mechanism (73) is arranged between the second functional testing equipment (51), the temporary storage warehouse (22) and the wire unplugging machine station (52).

7. A three-phase grid-connected inverter production line according to claim 1, characterized in that: The operating time periods of the first test section (30) and the second test section (50) are both set to the daytime period; the operating time periods of the aging test section (40) and the temporary storage warehouse (22) are both set to the whole-day period, and the temporary storage warehouse (22) temporarily stores products (80) that have completed the first functional test or the products (80) that have completed the aging test.

8. A three-phase grid-connected inverter production line according to claim 7, characterized in that: The first transfer mechanism (70) of the conveying device (60) is arranged between the first test section (30), the temporary storage warehouse (22) and the aging test section (40), and the second transfer mechanism (73) is arranged between the aging test section (40), the temporary storage warehouse (22) and the second test section (50).

9. A three-phase grid-connected inverter production line according to any one of claims 1-8, characterized in that: The first transfer mechanism (70) of the conveying device (60) is provided with a side line body (71) and a movable line body (72), wherein the side line body (71) is fixedly connected to the production line, and the two sides of the movable line body (72) are respectively detachably fixedly connected to the side line body (71), thereby respectively connecting the side line bodies (71) on both sides to form an overall transfer mechanism capable of conveying a jig and a product (80).

10. A three-phase grid-connected inverter production line according to any one of claims 1-8, characterized in that: The conveying device (60) is provided with an upper conveying track (61) and a lower return track (62); the upper conveying track (61) conveys the jig and the product (80), and the lower return track (62) returns and conveys the emptied jig; the jig is transferred between the upper conveying track (61) and the lower return track (62) via a lifting device (63).

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