Repair equipment for production line and control method thereof

Abstract

The invention discloses repair equipment for a production line and a control method thereof, and relates to the technical field of gearbox automatic production line assembly.The repair equipment comprises a rotary table, a repair turnout, a repair trolley and a controller, the repair turnout is arranged on one side of a main line body, the main line body comprises a fixed line body and a rotary line body, and the rotary line body is rotationally connected to the rotary table; through the linkage design of the rotating line body and the repair turnout, unqualified products can be rapidly identified and automatically transferred to a repair area, the complex process of traditional off-line repair is avoided, and time is saved; through cooperative work of the controller, the first RFID reader-writer, the second RFID reader-writer, the on-line tray sensor, the first detection switch and the off-line tray sensor, manual intervention is reduced, and the production efficiency is improved; when the second RFID reader-writer reads the product label, whether the product is qualified or not is judged, a reworking person directly obtains fault positioning information, blind disassembly of the whole gearbox is avoided, the disassembly and assembly loss of non-fault components is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of assembly of automatic production lines for gearboxes, and particularly relates to a repair device for a production line and a control method therefor. Background Art

[0002] In modern industrial production, automatic production lines have become an important means to improve production efficiency and product quality. Especially in the automotive manufacturing industry, as one of the key components, the assembly quality and performance of the gearbox directly affect the reliability and driving experience of the whole vehicle. During the assembly process of the gearbox, there may be situations such as defective parts and unqualified performance. These problems may not only lead to a decline in the quality of the final product, but also increase production costs and reduce production efficiency.

[0003] For the treatment of these unqualified products, off-line repair or on-line repair is usually required. However, on-line direct repair is often restricted by space and time, making it difficult to comprehensively and effectively solve complex problems, wasting time and affecting subsequent production. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a repair device for a production line and a control method therefor to overcome the existing defects of wasting time, low production efficiency and high production costs; and achieve the purpose of saving time, high production efficiency and low production costs.

[0005] To solve the above technical problems, the technical solution of the present invention is: a repair device for a production line, including a turntable, a repair turnout, a repair trolley and a controller. The repair turnout is arranged on one side of the main line body. The main line body includes a fixed line body and a rotating line body, and the rotating line body is rotatably connected to the turntable; A first conveying motor is arranged at the bottom of the rotating line body, and the output end of the first conveying motor transmits power to the conveying pipe on the rotating line body through a speed reducer and a transmission mechanism.

[0006] Furthermore, a first connecting plate spanning across both sides of the rotating line body is arranged on the rotating line body, and both ends of the first connecting plate are fixedly connected to the rotating line body; A rotating cylinder is fixedly arranged on the turntable, and the output end of the rotating cylinder is connected to the rotating line body through a rack-and-pinion, a crank connecting rod or a cam mechanism.

[0007] Furthermore, a second RFID reader / writer and a third material blocking cylinder are arranged on the first connecting plate, and a first detection switch for detecting the tray is arranged on one side of the rotating line body.

[0008] Further, a second conveying motor, a second connecting plate, and a third connecting plate are sequentially arranged on the repair turnout. The second connecting plate and the third connecting plate are horizontally bridged on both sides of the repair turnout, and both ends of the second connecting plate and the third connecting plate are fixedly connected to the repair turnout by bolts; The second conveying motor is arranged close to the turntable, and the output end of the second conveying motor transmits power to the conveying pipe on the repair turnout through a speed reducer and a transmission mechanism.

[0009] Further, a second material blocking cylinder and a first RFID reader / writer are arranged on the second connecting plate; A first material blocking cylinder is arranged on the third connecting plate. The first material blocking cylinder blocks or releases the repaired products on the repair turnout. An on-line tray sensor is also arranged on one side of the repair turnout. The on-line tray sensor is located between the second connecting plate and the third connecting plate. An off-line tray sensor is arranged on one side of the third connecting plate.

[0010] Further, a PC is also included. The PC is used to select a target station and perform code scanning and display during repair on-line; A scanning gun is arranged outside the outlet end of the repair turnout for scanning the QR code of the repaired product.

[0011] Further, a fixing frame is arranged at one end of the repair turnout close to the first material blocking cylinder. A second detection switch is arranged on the fixing frame to detect whether the repair trolley reaches the fixing frame. A third detection switch is arranged at one end of the repair turnout close to the repair trolley.

[0012] Further, the controller is electrically connected to the first detection switch, the second detection switch, the first material blocking cylinder, the second material blocking cylinder, the third material blocking cylinder, the first RFID reader / writer, the second RFID reader / writer, the on-line tray sensor, the off-line tray sensor, and the second conveying motor respectively.

[0013] Applying the control method of the above repair equipment, including a repair processing step and a repair on-line step. The repair processing step includes: Step S101: The product on the tray is transferred to the rotary line body along with the fixed line body. The information in the product label memory card is read through the second RFID reader / writer to judge whether the product is qualified. If it is judged that the product is qualified, go to step S102. If it is judged that the product is unqualified, go to step S103; Step S102: The product leaves the rotary line body with the tray and continues to be transferred to the next station along with the fixed line body; Step S103: Control the third material blocking cylinder to rise. After the second detection switch detects that the repair trolley reaches the fixed frame, the rotating cylinder drives the rotating line body to rotate 90°. Then the third material blocking cylinder drops, and the first conveyor motor transfers the tray and unqualified products to the repair branch track. The second conveyor motor transports the tray and unqualified products on the repair branch track to the repair trolley. After the tray and unqualified products are transferred to the repair branch track, the rotating line body returns to its original position. The operator transfers the unqualified products to the repair area through the repair trolley for repair processing. After the repair processing is completed, the repair on-line steps are carried out; The repair on-line steps include: Step S201: Select the repair on-line step, control the first material blocking cylinder to drop, and the second conveyor motor drives the tray and the repaired products to move towards the rotating line body; Step S202: Transport the tray and the repaired products to the repair branch track through the repair trolley; Step S203: After the on-line tray sensor detects that the tray is in place, the second material blocking cylinder rises, triggering the scanning. The operator scans the QR code of the repaired product and confirms the corresponding working station; Step S204: After the scanning is completed, release the tray and the repaired products. At the same time, the rotating cylinder drives the rotating line body to rotate 90°. When the first detection switch detects that the tray reaches the rotating line body, control the rotating line body to return to its original position. At the same time, the third material blocking cylinder rises, and the second RFID reader reads the information in the product label memory card again to re-judge whether the product is qualified. If it is judged that the product is unqualified, enter Step S103; if it is judged that the product is qualified, enter Step S102.

[0014] Adopting the above technical solutions, compared with the prior art, the present invention has the following advantages: Through the linkage design of the rotating line body and the repair branch track, unqualified products can be quickly identified and automatically transferred to the repair area, avoiding the complex processes of traditional off-line repair and saving time; Through the coordinated work of the controller, the first RFID reader, the second RFID reader, the on-line tray sensor, the first detection switch, and the off-line tray sensor, the full-automatic management of product sorting and repair transfer is realized, reducing manual intervention and improving production efficiency; When the second RFID reader reads the product label, it judges whether the product is qualified, locates the specific unqualified parts through the historical assembly data (such as station number, program number, etc.) associated with the MES control system. The repair personnel directly obtain the fault location information, avoiding blindly disassembling the entire gearbox, reducing the disassembly and assembly losses of non-faulty parts, retaining available parts, and reducing production costs. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a repair device for a production line in the present invention.

[0016] In the figure: 1 - turntable, 2 - first material blocking cylinder, 3 - repair trolley, 4 - repair turnout, 5 - barcode scanner, 6 - on-line pallet sensor, 7 - pallet, 8 - first RFID reader / writer, 9 - second material blocking cylinder, 10 - second RFID reader / writer, 11 - third material blocking cylinder, 12 - first detection switch, 13 - first conveyor motor, 14 - rotary cylinder, 15 - main line body, 16 - second conveyor motor, 17 - off-line pallet sensor, 18 - first connecting plate, 19 - second connecting plate, 20 - fixing bracket, 21 - second detection switch, 22 - third detection switch, 23 - PC, 24 - rotary line body, 25 - fixed line body, 26 - third connecting plate. Specific embodiments

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] Embodiment, as Figure 1 shown, a repair device for a production line includes a turntable 1, a repair turnout 4, a repair trolley 3 and a controller. The repair turnout 4 is arranged on one side of the main line body 15. The main line body 15 includes a fixed line body 25 and a rotary line body 24. The rotary line body 24 is rotatably connected to the turntable 1. In the initial state, the rotary line body 24 is aligned with the fixed line body 25. A first connecting plate 18 that transversely straddles both sides of the rotary line body 24 is arranged on the rotary line body 24. Both ends of the first connecting plate 18 are fixedly connected to the rotary line body 24 by bolts. A rotary cylinder 14 is fixedly arranged on the turntable 1. The output end of the rotary cylinder 14 can be connected to the rotary line body 24 through a rack and pinion, a crank and connecting rod or a cam mechanism, so as to drive the rotary line body 24 to rotate. Driving the turntable 1 to rotate by the rotary cylinder 14 is a prior art and will not be described in detail here.

[0019] A first conveyor motor 13 is arranged at the bottom of the rotary line body 24. The output end of the first conveyor motor 13 transmits power to the conveying pipe on the rotary line body 24 through a speed reducer (not shown in the figure) and a transmission mechanism (not shown in the figure). The first conveyor motor 13 is used to convey the products on the rotary line body 24. Driving the rotary line body 24 to operate by the first conveyor motor 13 is a prior art and will not be described in detail here.

[0020] A second RFID reader / writer 10 is provided on the first connecting plate 18. The second RFID reader / writer 10 is used to read the information in the product label memory card, compare the information in the product label memory card with the standard data of qualified products to determine whether the product is qualified, and locate the specific unqualified parts through the historical assembly data (such as station number, program number, etc.) associated with the MES control system.

[0021] A first detection switch 12 is provided on one side of the rotary line body 24. The first detection switch 12 is used to detect whether there is a pallet 7 in place on the turntable 1.

[0022] A pallet 7 is also provided on the main line body 15. The pallet 7 holds the product and circulates on the main line body 15 and the repair branch track 4.

[0023] A third material blocking cylinder 11 is also provided on the first connecting plate 18. The third material blocking cylinder 11 is used to block or release the pallet 7.

[0024] A second conveying motor 16, a second connecting plate 19 and a third connecting plate 26 are successively arranged on the repair branch track 4. The second connecting plate 19 and the third connecting plate 26 are horizontally bridged on both sides of the repair branch track 4. The two ends of the second connecting plate 19 and the third connecting plate 26 are fixedly connected to the repair branch track 4 by bolts. The second conveying motor 16 is arranged close to the turntable 1. The output end of the second conveying motor 16 transmits power to the conveying pipe on the repair branch track 4 through a speed reducer and a transmission mechanism, so that the pallet 7 and the product move on the repair branch track 4. The driving of the pallet 7 and the product by the second conveying motor 16 is a prior art and will not be described in detail here.

[0025] A second material blocking cylinder 9 and a first RFID reader / writer 8 are provided on the second connecting plate 19. The second material blocking cylinder 9 is used to block or release the repaired product. The first RFID reader / writer 8 is used to read the RFID tag information on the pallet 7 of the repaired product. A first material blocking cylinder 2 is provided on the third connecting plate 26. The first material blocking cylinder 2 is used to block or release the pallet 7 and the repaired product on the repair branch track 4. An online pallet sensor 6 is also provided on one side of the repair branch track 4. The online pallet sensor 6 is located between the second connecting plate 19 and the third connecting plate 26 and is used to detect whether the pallet 7 and the repaired product are in place. An offline pallet sensor 17 is provided on one side of the third connecting plate 26 and is used to detect whether the pallet 7 and the unqualified product leave the repair branch track 4.

[0026] A scanning gun 5 is provided outside the outlet end of the repair branch track 4 and is used to scan the QR code of the repaired product. The operator uses the scanning gun 5 to send the QR code information of the repaired product to the MES control system so that the system can query the corresponding model information to ensure that the product can accurately enter the next station after repair.

[0027] A repair device for a production line further includes a PC 23, which is used to select a target station and perform code scanning and display when repairing and going online.

[0028] One end of the repair fork 4 close to the first material blocking cylinder 2 is provided with a fixing frame 20 for fixedly connecting the repair trolley 3. A second detection switch 21 is arranged on the fixing frame 20, and the second detection switch 21 is used to detect whether the repair trolley 3 reaches the fixing frame 20. When the second detection switch 21 detects that the repair trolley 3 reaches the fixing frame 20, it sends a signal to the controller to ensure that the repair trolley 3 transfers the tray 7 and unqualified products at the correct position.

[0029] One end of the repair fork 4 close to the repair trolley 3 is provided with a third detection switch 22. After detecting that the tray leaves, it clears the current working information to prepare for the next use.

[0030] In this embodiment, the first detection switch 12, the second detection switch 21 and the third detection switch 22 can adopt any switch type that can realize the in-place triggering function, such as a travel switch, a proximity switch or a photoelectric switch, etc. The specific types of the first detection switch 12, the second detection switch 21 and the third detection switch 22 are not limited in this embodiment. In addition, the applications of the first detection switch 12, the second detection switch 21, the third detection switch 22, etc. all belong to the category of existing technologies and will not be described in detail here.

[0031] The controller is electrically connected to the third material blocking cylinder 11, the first detection switch 12, the offline tray sensor 17, the second detection switch 21, the second RFID reader / writer 10, the online tray sensor 6, the first material blocking cylinder 2, the second conveyor motor 16, the first RFID reader / writer 8, the first conveyor motor 13 and the second material blocking cylinder 9 respectively.

[0032] In this embodiment, it is preferred that the controller is a PLC (Programmable Logic Controller).

[0033] A control method for a repair device for a production line includes a repair processing step and a repair online step. The repair processing step includes: Step S101: The product on the tray 7 flows to the rotary line body 24 along with the fixed line body 25. The first detection switch 12 detects the tray 7 and sends a signal to the controller. The controller controls the second RFID reader / writer 10 to read the information in the product label memory card, and compares the information in the product label memory card with the standard data of qualified products to determine whether the product is qualified. If it is determined that the product is qualified, go to step S102; if it is determined that the product is unqualified, go to step S103; Step S102: The product leaves the rotary line 24 with the pallet 7 and continues to flow to the next station along the fixed line 25; Step S103: The controller controls the third material blocking cylinder 11 to rise to block the flow of the pallet 7. The second detection switch 21 detects that the repair trolley 3 reaches the fixed frame 20 and sends a signal to the controller. Then the controller controls the rotary cylinder 14 to drive the rotary line 24 to rotate 90°. The controller controls the third material blocking cylinder 11 to fall. The first conveyor motor 13 transfers the pallet 7 and the unqualified product to the repair branch 4. The second conveyor motor 16 conveys the pallet 7 and the unqualified product on the repair branch 4 to the repair trolley 3. When the offline pallet sensor 17 detects that the pallet 7 has left the repair branch 4, it will send a signal to the controller to ensure that the pallet 7 has left the repair branch 4. After the third detection switch 22 detects the departure of the pallet, it clears the dynamic information related to the current repair process to ensure that the system returns to the initial standby state for the next use. After the pallet 7 and the unqualified product are transferred to the repair branch 4, the rotary line 24 returns to its original position. The operator transfers the unqualified product to the repair area through the repair trolley 3 for repair. After the repair is completed, the repair online steps are carried out.

[0034] The repair online steps include: Step S201: In the initial state, the first material blocking cylinder 2 is in the raised state. Open the MES control system operation program interface on the PC 23, select the repair online step. The MES control system transmits the repair step signal to the controller through the OPC software. The controller controls the first material blocking cylinder 2 to fall. The second conveyor motor 16 drives the pallet 7 and the repaired product to move on the repair branch 4 towards the rotary line 24; Step S202: The operator transports the pallet 7 and the repaired product to the repair branch 4 through the repair trolley 3; Step S203: After the online pallet sensor 6 detects that the pallet 7 is in place, it sends a signal to the controller to control the second material blocking cylinder 9 to rise. The controller transmits the signal to the MES control system through the OPC software. The MES control system triggers the barcode scanning. A scanning dialog box pops up on the PC interface. The operator uses the scanning gun 5 to scan the QR code of the repaired product. The QR code of the repaired product is sent to the MES control system. A work selection screen pops up on the PC interface. After the operator selects and confirms the corresponding work station, the controller queries the corresponding model information from the MES control system according to the QR code information of the repaired product, including information such as serial number, program number, work station number, target station, product status, etc.; Step S204: After the code scanning is completed, the controller transmits the model information to the first RFID reader / writer 8. The controller controls the second material blocking cylinder 9 to drop, releasing the tray 7 and the repaired product. At the same time, the controller controls the rotary cylinder 14 to drive the rotary line body 24 to rotate 90°. When the first detection switch 12 detects that the tray 7 has reached the rotary line body 24, it sends a signal to the controller. The controller controls the rotary line body 24 to return to its original position. At the same time, the third material blocking cylinder 11 rises, and the second RFID reader / writer 10 reads the information in the product label memory card again to re-determine whether the product is qualified. If it is determined that the product is unqualified, go to step S103; if it is determined that the product is qualified, the third material blocking cylinder 11 drops, and the tray 7 and the repaired product continue to move along the fixed line body 25. After moving to a certain station, the RFID reader / writer at that station is triggered to read the information and compare whether the target station is the same. If so, go to step S205; otherwise, go to step S206; Step S205: A repair interface pops up on the HMI touch screen. Select the content that needs to work. After selection, click the OK button, and the device starts to work; Step S206: The material blocking cylinder at this station drops, releasing the tray 7 and the repaired product to the next station until the information read by the RFID reader / writer at a certain station is the same as the target station.

[0035] In this embodiment, only a single step is allowed to be executed during the system operation, and the exclusive control of step selection is realized through the controller; the repair on-line step is configured to have the highest priority. When there are two step requests at the same time, the controller preferentially responds to the repair on-line instruction; during the period when the rotary line body 24 carries the tray 7, the controller locks the currently running step until the tray transfer is completed, and at this time, the step switching operation is prohibited.

[0036] Through the linkage design of the rotary line body 24 and the repair branch 4, unqualified products can be quickly identified and automatically transferred to the repair area, avoiding the complex process of traditional off-line repair and saving time; Through the collaborative work of the controller, the first RFID reader / writer 8, the second RFID reader / writer 10, the on-line tray sensor 6, the first detection switch 12, and the off-line tray sensor 17, the full-automatic management of product sorting and repair flow is realized, reducing manual intervention and improving production efficiency; When the second RFID reader / writer 10 reads the product label, it determines whether the product is qualified, locates the specific unqualified parts through the historical assembly data (such as station number, program number, etc.) associated with the MES control system. The repair personnel directly obtain the fault location information, avoiding blindly disassembling the entire gearbox, reducing the disassembly and assembly loss of non-faulty parts, retaining available parts, and reducing production costs.

[0037] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A repair device for a production line, characterized in that: It includes a turntable (1), a repair turnout (4), a repair trolley (3) and a controller. The repair turnout (4) is arranged on one side of the main line body (15). The main line body (15) includes a fixed line body (25) and a rotating line body (24). The rotating line body (24) is rotatably connected to the turntable (1). A first conveyor motor (13) is arranged at the bottom of the rotating line body (24). The output end of the first conveyor motor (13) transmits power to the conveyor pipe on the rotating line body (24) through a speed reducer and a transmission mechanism.

2. The rework equipment for a production line according to claim 1, wherein: A first connecting plate (18) that transversely spans both sides of the rotating line body (24) is arranged on the rotating line body (24). Both ends of the first connecting plate (18) are fixedly connected to the rotating line body (24). A rotating cylinder (14) is fixedly arranged on the turntable (1). The output end of the rotating cylinder (14) is connected to the rotating line body (24) through a rack-and-pinion, crank-link or cam mechanism.

3. The rework equipment for a production line according to claim 2, characterized in that: A second RFID reader / writer (10) and a third material blocking cylinder (11) are arranged on the first connecting plate (18). A first detection switch (12) for detecting the tray (7) is arranged on one side of the rotating line body (24).

4. The rework equipment for a production line according to claim 3, characterized in that: A second conveyor motor (16), a second connecting plate (19) and a third connecting plate (26) are successively arranged on the repair turnout (4). The second connecting plate (19) and the third connecting plate (26) transversely span both sides of the repair turnout (4). Both ends of the second connecting plate (19) and the third connecting plate (26) are fixedly connected to the repair turnout (4) by bolts. The second conveyor motor (16) is arranged close to the turntable (1). The output end of the second conveyor motor (16) transmits power to the conveyor pipe on the repair turnout (4) through a speed reducer and a transmission mechanism.

5. The rework equipment for a production line according to claim 4, characterized in that: A second material blocking cylinder (9) and a first RFID reader / writer (8) are arranged on the second connecting plate (19). A first material blocking cylinder (2) is arranged on the third connecting plate (26). The first material blocking cylinder (2) blocks or releases the repaired products on the repair turnout (4). An on-line tray sensor (6) is also arranged on one side of the repair turnout (4). The on-line tray sensor (6) is located between the second connecting plate (19) and the third connecting plate (26). An off-line tray sensor (17) is arranged on one side of the third connecting plate (26).

6. The rework equipment for a production line according to claim 1, characterized in that: It also includes a PC (23), and the PC (23) is used to select the target station and perform code scanning and display during repair on-line. A scanning gun (5) is arranged outside the outlet end of the repair turnout (4) for scanning the two-dimensional code of the repaired product.

7. The rework equipment for a production line according to claim 5, wherein: A fixed frame (20) is arranged at one end of the repair turnout (4) close to the first material blocking cylinder (2). A second detection switch (21) is arranged on the fixed frame (20). The second detection switch (21) detects whether the repair trolley (3) reaches the fixed frame (20). A third detection switch (22) is arranged at one end of the repair turnout (4) close to the repair trolley (3).

8. The rework equipment for a production line according to claim 7, wherein: The controller is electrically connected to a first detection switch (12), a second detection switch (21), a first material blocking cylinder (2), a second material blocking cylinder (9), a third material blocking cylinder (11), a first RFID reader / writer (8), a second RFID reader / writer (10), an upstream pallet sensor (6), a downstream pallet sensor (17), and a second conveyor motor (16) respectively.

9. A control method for a repair device as claimed in claim 7 or 8, characterized in that: It includes a repair processing step and a repair online step. The repair processing step includes: Step S101: The product on the pallet (7) is transferred to the rotary line body (24) along with the fixed line body (25). The information in the product label memory card is read through the second RFID reader / writer (10) to determine whether the product is qualified. If the product is determined to be qualified, go to step S102; if the product is determined to be unqualified, go to step S103. Step S102: The product leaves the rotary line body (24) with the pallet (7) and continues to be transferred to the next station along with the fixed line body (25). Step S103: Control the third material blocking cylinder (11) to rise. After the second detection switch (21) detects that the repair cart (3) reaches the fixed frame (20), the rotary cylinder (14) drives the rotary line body (24) to rotate 90°. The third material blocking cylinder (11) falls, and the first conveyor motor (13) transfers the pallet (7) and the unqualified product to the repair branch (4). The second conveyor motor (16) transports the pallet (7) and the unqualified product on the repair branch (4) to the repair cart (3). After the pallet (7) and the unqualified product are transferred to the repair branch (4), the rotary line body (24) returns to its original position. The operator transfers the unqualified product to the repair area through the repair cart (3) for repair processing. After the repair processing is completed, the repair online step is carried out. The repair online step includes: Step S201: Select the repair online step, control the first material blocking cylinder (2) to fall, and the second conveyor motor (16) drives the pallet (7) and the repaired product to move towards the rotary line body (24). Step S202: Transport the pallet (7) and the repaired product to the repair branch (4) through the repair cart (3). Step S203: After the upstream pallet sensor (6) detects that the pallet (7) is in place, the second material blocking cylinder (9) is lifted to trigger scanning. The operator scans the QR code of the repaired product and confirms the corresponding working station. Step S204: After the scanning is completed, release the pallet (7) and the repaired product. At the same time, the rotary cylinder (14) drives the rotary line body (24) to rotate 90°. When the first detection switch (12) detects that the pallet (7) reaches the rotary line body (24), control the rotary line body (24) to return to its original position. At the same time, the third material blocking cylinder (11) is lifted, and the second RFID reader / writer (10) reads the information in the product label memory card again to re-determine whether the product is qualified. If the product is determined to be unqualified, go to step S103; if the product is determined to be qualified, go to step S102.

Images