A serial workstation tray diversion method and apparatus

Abstract

The application provides a serial workstation tray diversion method and device, and relates to the field of shoemaking.The method comprises the following steps: continuously numbering the untreated trays from right to left from the beginning; P1 and P2 are transported to the right and left working positions of Sa1, P3 and P4 are transported to the right and left working positions of Sa2, and P5 is transported to M1; after the workpiece of P1 is processed, P1 is marked and released, P5 is transported to the right working position of Sa1, after the workpiece of P2 is processed, P6 is transported to the left working position of Sa1, P7 is transported to M2, and P8 is transported to a standby position; after the workpiece of P3 is processed, P3 is marked and released, P7 is transported to the right working position of Sa2, after the workpiece of P4 is processed, P4 is marked and released, P8 is transported to the left working position of Sa2, and the next cycle is entered. The application can improve the workpiece processing efficiency and is suitable for occasions where the width of the site is limited.

Description

Technical Field

[0001] This invention relates to the field of shoemaking, and in particular to a method and apparatus for tray diversion in a serial workstation. Background Technology

[0002] There are two types of automated glue spraying solutions for shoe production lines: online glue spraying and offline glue spraying. Offline glue spraying generally uses a two-station system, such as... Figure 1 As shown, shoes numbered 1-20 enter the glue spraying station in two stations, left and right, with a middle station set between them. This allows the left and right feet to enter the station separately, i.e., the left foot enters the left station and the right foot enters the right station. This ensures that the glue spraying posture of the left and right stations always maintains the same foot shape, which can improve glue spraying efficiency. However, if the incoming materials are coming in very quickly, a single workstation is insufficient to meet production requirements.

[0003] In response to this situation, existing technologies have proposed solutions such as... Figure 2 The proposed improvement involves setting up another workstation opposite the existing one. While this improves efficiency, it nearly doubles the width of the production line, making it unsuitable for situations where space is limited. Summary of the Invention

[0004] The main objective of this invention is to propose a serial workstation tray diversion method and apparatus that can improve workpiece processing efficiency and is applicable to situations where space width is limited.

[0005] This invention is achieved through the following technical solution:

[0006] A serial workstation tray diversion method involves setting up a left workstation Sa1 and a right workstation Sa2 at intervals on the same side of a conveyor line transporting goods from left to right. The conveyor line has a first left position and a first right position corresponding to the left and right working positions of Sa1, a second left position and a second right position corresponding to the left and right working positions of Sa2, and a first reserve position and a second reserve position corresponding to Sa1 and Sa2, respectively. An intermediate position M1 is located between the first left and first right positions, and an intermediate position M2 is located between the second left and second right positions. The diversion method includes the following steps:

[0007] Step S1: Number the unprocessed pallets on the conveyor line consecutively from right to left, starting from the first number. The pallet numbered j is represented as P. j Pallets with odd numbers can only enter the right workstation, and pallets with even numbers can only enter the left workstation.

[0008] After steps S2, P1 and P2 are sequentially transported to the first right position and the first left position, they are transferred to the right working position and the left working position of Sa1 respectively. P3 and P4 are transferred to the right working position and the left working position of Sa2. P5 is transported to M1.

[0009] After the workpieces of P1 in steps S3 and P1 are processed, the workpiece of P2 is processed. P1 is marked and pushed to the first right position and released. P5 is transported to the first right position and transferred to the right working position of Sa1. After the workpiece of P2 is processed, P2 is marked and pushed to the first left position and released. P6 is transported to the left working position of Sa1. P7 is transported to M2 and P8 is transported to the second preparatory position.

[0010] After the workpieces on P3 are processed in steps S4 and P3, the workpiece on P4 is processed. P3 is marked and pushed to the second right position and released. P7 is transported to the right working position of Sa2. After the workpiece processing of P4 is completed, P4 is marked and pushed to the second left position and released. P8 is transported to the left working position of Sa2 and enters the next cycle.

[0011] Pallets processed by later workstations can only be released after pallets processed by earlier workstations have been released.

[0012] Furthermore, the conveyor line is equipped with card readers corresponding to the first preparatory position, the first intermediate position, the second preparatory position, and the second intermediate position. The tray is equipped with a chip that stores workpiece information. After the workpiece is processed, a mark indicating completion is set in the chip. When the card reader detects that the tray is marked, the tray is released; otherwise, the tray is blocked.

[0013] Furthermore, there are two first intermediate bits between the first left bit and the first right bit, and there are two second intermediate bits between the second left bit and the second right bit.

[0014] Furthermore, when Sa1 malfunctions, the remaining unprocessed trays are temporarily not released. Sa1 is reset to push out its internal trays, and the tray is detected using the card reader corresponding to the first intermediate position. If it is detected that it has been marked, it is released. If it has not been marked, it is sent to the second reserve position and sent to the second left or second right position of Sa2 for processing according to its number.

[0015] Furthermore, if Sa1 returns to normal after reset, the remaining unprocessed trays are renumbered sequentially from right to left starting from the beginning, and the workpieces are processed according to steps S1 to S4.

[0016] Furthermore, if the fault persists after Sa1 is reset, Sa1 is disabled and only Sa2 is used for processing. Once Sa1 returns to normal, the workpiece is processed again according to steps S1 to S4.

[0017] Furthermore, when Sa2 malfunctions, the tray will not be assigned to Sa2 temporarily. Sa2 will be reset to push out its internal tray, and the tray will be detected by the card reader corresponding to the second intermediate bit. If it is detected that it has been marked, it will be allowed to pass. If it has not been marked, it will be blocked and allowed to pass after manual processing.

[0018] Furthermore, if Sa2 returns to normal after reset, continue to allocate trays to Sa2; otherwise, disable Sa2 and rely solely on Sa1 for processing.

[0019] This invention is also achieved through the following technical solutions:

[0020] A serial workstation tray diversion method involves sequentially setting N workstations at intervals on the same side of a conveyor line transporting goods from left to right. For the i-th workstation Sa... i The conveyor line has corresponding Sa i The i-th left bit L of the left and right working positions i and the i-th right position R i L i and R i At least one intermediate bit M is set between them. i The diversion method includes the following steps:

[0021] Step S1: Number the unprocessed pallets on the conveyor line consecutively from right to left, starting from the first number. The pallet numbered j is represented as P. j Pallets with odd numbers can only enter the right workstation, and pallets with even numbers can only enter the left workstation.

[0022] Steps S2, P1, and P2 are sequentially transported to the right and left working positions of workstation Sa1, while P3 and P4 are sequentially transported to the right and left working positions of workstation Sa2, and this process is repeated until P... 2N-1 and P 2N They are sequentially transported to workstation Sa N The right and left workstations, P 2N+1 It was transported to M1;

[0023] After workpieces S1 and P1 are processed in steps S3, workpieces P2 begin to be processed. P1 is marked, pushed out of R1, and released. 2N+1 After workpiece P2 is processed and transported to the right workstation of workstation Sa1, it is marked, pushed out to L1, and released. 2N+2 Transport P to the left working position of workstation Sa1. 2N+3 Transported to M2, P 2N+4 Transport to the preparatory position located between R1 and L2;

[0024] Step S4: Following step S3, sequentially process workstations Sa2 to Sa... N The pallets inside are processed, and once all pallets have been processed, the next cycle begins.

[0025] Where N≥3, i=1,2,…,N, and j is an integer.

[0026] This invention is also achieved through the following technical solutions:

[0027] A diversion device for implementing the serial workstation tray diversion method described above is characterized by comprising: a conveyor line transporting data from left to right; N workstations arranged at intervals on the same side of the conveyor line from left to right; N left positions, N right positions, multiple middle positions arranged on the conveyor line; multiple blocking mechanisms and card readers; and a control mechanism, wherein the i-th left position L... i and the i-th right position R i Corresponding to the i-th workstation Sa i The left and right workstations, L i and R i At least one intermediate bit M is set between them. i The control mechanism controls the operation of the conveyor line and each workstation to process the workpieces on the pallet. The pallet is equipped with a chip that stores workpiece information. When the workpiece is processed, the control mechanism sets a mark in the chip to indicate completion. After the card reader detects that the pallet has been marked, the control mechanism controls the blocking mechanism to release the pallet. Otherwise, the blocking mechanism blocks the pallet.

[0028] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In this invention, a left workstation and a right workstation are spaced apart on the same side of the conveyor line. Pallets numbered odd can only enter the right workstation, and pallets numbered even can only enter the left workstation. In the first cycle, P1 and P2 are sequentially conveyed to the first right position and the first left position, and then transferred to the right and left workstations of Sa1, respectively. P3 and P4 are transferred to the right and left workstations of Sa2, and P5 is conveyed to M1. After the workpiece of P1 is processed, the workpiece of P2 begins to be processed. P1 is marked and pushed out to the first right position and released. P5 is conveyed to the first right position and transferred to the right workstation of Sa1. After workpiece P2 is processed, P2 is marked and pushed to the first left position and released. P6 is transported to the left working position of Sa1, P7 is transported to M2, and P8 is transported to the preparatory position located between the first right position and the second left position. After workpiece P3 is processed, workpiece P4 begins to be processed. P3 is marked and pushed to the second right position and released. P7 is transported to the right working position of Sa2. After workpiece P4 is processed, P4 is marked and pushed to the second left position and released. P8 is transported to the left working position of Sa2. After workpieces P5, P6, P7, and P8 are all processed, the next cycle begins. This effectively improves workpiece processing efficiency without increasing the footprint, making it suitable for situations where space width is limited. Furthermore, this invention enables first-in, first-out (FIFO), ensuring that the processed workpieces are arranged in the same order as before processing, thus preventing the processed workpieces from being misaligned with their accessories and affecting subsequent processes.

[0030] 2. When a workstation malfunctions, the faulty workstation can be shielded, and production can be carried out using only a single workstation. When all workstations are functioning normally, the number of workstations used for production can be selected according to requirements, providing greater flexibility.

[0031] 3. Multiple workstations can be added as needed to further improve flexibility. Attached Figure Description

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Figure 1 This is a schematic diagram of a single workstation in the prior art.

[0034] Figure 2 This is a schematic diagram of a dual workstation in the prior art.

[0035] Figure 3 This is a schematic diagram of Embodiment 1 of the present invention.

[0036] Figure 4 for Figure 3 Enlarged view of section A.

[0037] Figure 5 This is a schematic diagram of Embodiment 3 of the present invention.

[0038] Among them, 1. Conveyor line; 11. First standby position; 12. Second standby position; 13. End detection position; Sa1. Left workstation; 21. Left workstation; 22. Right workstation; L1. First left position; R1. First right position; Sa2. Right workstation; 31. Left workstation; 32. Right workstation; L2. Second left position; R2. Second right position; M1. Middle position; M2. Middle position; 4. Card reader. Detailed Implementation

[0039] The present invention will be further described below through specific embodiments.

[0040] The serial workstation tray distribution device includes a conveyor line 1 that transports data from left to right, N workstations arranged at intervals on the same side of the conveyor line 1 from left to right, N left positions, N right positions, multiple middle positions, multiple reserve positions, multiple blocking mechanisms, a card reader 4, an end detection position 13, and a control mechanism. The i-th left position L... i and the i-th right position R i Corresponding to the i-th workstation Sa i The left and right workstations, L i and R i At least one intermediate bit M is set between them. i The control mechanism controls the operation of conveyor line 1 and each workstation to process the workpieces on the tray. The tray is equipped with a chip that stores workpiece information. When the workpiece is processed, the control mechanism sets a mark in the chip to indicate completion. After the card reader 4 detects that the tray has been marked, the control mechanism controls the blocking mechanism to release the tray. Otherwise, the blocking mechanism blocks the tray.

[0041] Example 1:

[0042] like Figure 3 and Figure 4As shown, in this embodiment, N=2 workstations are set, that is, a left workstation Sa1 and a right workstation Sa2 are set at intervals on the same side of the conveyor line 1 from left to right. The conveyor line 1 has a first left position L1 and a first right position R1 corresponding to the left working position 21 and the right working position 22 of Sa1, a second left position L2 and a second right position R2 corresponding to the left working position 31 and the right working position 32 of Sa2, and a first reserve position 11 and a second reserve position 12 corresponding to Sa1 and Sa2, respectively. There is a first intermediate position M1 between the first left position L1 and the first right position R1, and a second intermediate position M2 between the second left position L2 and the second right position R2. The first reserve position 11 is located to the left of the first left position L1, and the second reserve position is located between the first right position R1 and the second left position L2. The first reserve position 11, the first intermediate position M1, the second reserve position 12, the second intermediate position M2 and the end detection position 13 are all equipped with card readers 4. The card readers 4 can detect the number of the tray and the flag bit of the chip in the tray. The traffic splitting method in this embodiment includes the following steps:

[0043] Step S1: Number the unprocessed pallets on conveyor line 1 consecutively from right to left, starting from the first number. The pallet numbered j is represented as P. j The trays with odd numbers can only enter the right working position, and the trays with even numbers can only enter the left working position. P1 is located in the first preparatory position 11.

[0044] After steps S2, P1 and P2 are sequentially transported to the first right position R1 and the first left position L1, they are transferred to the right working position 22 and the left working position 21 of Sa1, respectively. P3 and P4 are transferred to the right working position 32 and the left working position 31 of Sa2, and P5 is transported to M1.

[0045] After the workpieces of P1 are processed in steps S3 and S4, the workpieces of P2 are processed. P1 is marked and pushed to the first right position R1. The card reader of M1 detects that P1 is marked, so P1 is released. P5 is transported to the first right position R1 and transferred to the right working position 22 of Sa1. After the workpieces of P2 are processed, P2 is marked and pushed to the first left position L1 and released. P6 is transported to the left working position 21 of Sa1. P7 is transported to M2 and P8 is transported to the second preparatory position 12 located between the first right position R1 and the second left position L2.

[0046] The marking of processed workpieces on pallets is performed by the PLC of the corresponding workstation. The chip storing workpiece information on the pallet has a pre-set flag bit. The PLC modifies the flag bit to complete the marking of the pallet. This process is existing technology. The process of the card reader reading the number and flag bit is also existing technology. Multiple blocking mechanisms are also installed on conveyor line 1 to block or allow unprocessed pallets based on the detection results of the corresponding card readers. An end detection position 13 is set at the end of the conveyor line. The card reader at end detection position 13 re-inspects all pallets allowed to reach end detection position 13. If an unmarked pallet is detected, it is blocked and awaits manual processing. The pallet structure, chip structure, card reader 4 structure, and blocking mechanism are all existing technologies.

[0047] After the workpieces on steps S4 and P3 are processed, workpiece P4 begins to be processed. P3 is marked and pushed to the second right position R2 and released. P7 is conveyed to the right working position 32 of Sa2. After the workpiece processing of P4 is completed, P4 is marked and pushed to the second left position L2 and released. P8 is conveyed to the left working position 31 of Sa2, and the next cycle begins to process workpieces P5, P6, P7, and P8. After processing, P9 and P... 10 P is located at right workstation 22 and left workstation 21 of left workstation Sa1 respectively. 11 and P 12 Located at right workstation Sa2, specifically at right workstation 32 and left workstation 31;

[0048] Pallets processed by later workstations can only be released after pallets processed by earlier workstations have been released.

[0049] In this embodiment, the workstation is a glue spraying station, the workpiece is a shoe upper, and the glue spraying robot in the glue spraying station sprays glue on the shoe upper. The glue spraying robot is located between the left work position and the right work position. It first sprays glue on the shoe upper on the right work position, and then sprays glue on the shoe upper on the left work position.

[0050] If there are 20 unprocessed trays, they are arranged from left to right as P 20 P 10 …P2P1, after steps S1 to S4, left workstation Sa1 sets up connections between P1, P2, P5, P6, P9, and P… 10 P 13 P 14 P 17 P 18 Processing, right workstation Sa2 to P3, P4, P7, P8, P 11 P 12 P 15 P 16 P 19 P 20After processing, the trays are still sorted as P. 20 P 10 …P2P1, this ensures that the upper will not be misaligned during subsequent pairing with the sole.

[0051] The procedure for when a workstation malfunctions is as follows:

[0052] When the left workstation Sa1 malfunctions, the remaining unprocessed trays are temporarily not released. Sa1 is reset to push out its internal trays, and the card reader 4 corresponding to the first intermediate position M1 is used to detect the tray. If it is detected that it has been marked, it is released. If it has not been marked, it is sent to the second reserve position 12. The second reserve position 12 reads its number, and the control mechanism sends it to the second left position L2 or the second right position R2 of Sa2 for processing according to its number. The control mechanism is existing technology, and its process of sending the tray to the left or right position of the corresponding workstation according to the tray number is also existing technology.

[0053] If the left workstation Sa1 returns to normal after reset, renumber the remaining unprocessed pallets sequentially from right to left, starting from the beginning, and process the workpieces according to steps S1 to S4. If the left workstation Sa1 still malfunctions after reset, disable the left workstation and rely solely on the right workstation Sa2 for processing. Once the left workstation Sa1 returns to normal, process the workpieces again according to steps S1 to S4.

[0054] When the right workstation Sa2 malfunctions, the tray will not be assigned to Sa2 temporarily. Sa2 will be reset to push out its internal tray, and the card reader corresponding to the second intermediate position M2 will be used to detect the tray. If it is detected that it has been marked, it will be allowed to pass. If it has not been marked, it will be blocked and will be allowed to pass after manual processing.

[0055] If the right workstation Sa2 returns to normal after reset, continue to allocate trays to the right workstation Sa2; otherwise, disable the right workstation Sa2 and rely solely on the left workstation Sa1 for processing.

[0056] When only the left workstation Sa1 or only the right workstation Sa2 is working, its working process is the same as that disclosed in the invention patent "A Method for Spraying Adhesive onto Shoe Uppers" with publication number CN120604897B.

[0057] Example 2:

[0058] The only difference between this embodiment and Embodiment 1 is that:

[0059] In this embodiment, two first intermediate positions are spaced apart between the first left position and the first right position, and two second intermediate positions are spaced apart between the second left position and the second right position. When there is already a pallet released from the preparation position on the right intermediate position, and the workpiece on the pallet on the right working position has been processed, the workpiece in the left working position is being processed while the pallet in the left working position is being pushed out. When the workpiece in the left working position has been processed, if the pallet on the right intermediate position has not yet been transported to the right working position, the pallet in the left working position is pushed out to the left intermediate position, and then the pallet on the preparation position is released to the left working position. In this way, the left working position does not have to wait for the pallet in the intermediate position to be transported to the right working position before it starts pushing out, thereby increasing the pallet release cycle and further improving work efficiency.

[0060] Example 3:

[0061] The difference between this embodiment and Embodiment 1 is that:

[0062] like Figure 5 As shown, this embodiment has three workstations. The traffic splitting method in this embodiment is similar to that in Embodiment 1, and will now be described with N workstations:

[0063] Step S1: Number the unprocessed pallets on the conveyor line consecutively from right to left, starting from the first number. The pallet numbered j is represented as P. j Pallets with odd numbers can only enter the right workstation, and pallets with even numbers can only enter the left workstation.

[0064] Steps S2, P1, and P2 are sequentially transported to the right and left working positions of workstation Sa1, while P3 and P4 are sequentially transported to the right and left working positions of workstation Sa2, and this process is repeated until P... 2N-1 and P 2N They are sequentially transported to workstation Sa N The right and left workstations, P 2N+1 It was transported to M1;

[0065] After workpieces S1 and P1 are processed in steps S3, workpieces P2 begin to be processed. P1 is marked, pushed out of R1, and released. 2N+1 After workpiece P2 is processed and transported to the right workstation of workstation Sa1, it is marked, pushed out to L1, and released. 2N+2 Transport P to the left working position of workstation Sa1. 2N+3 Transported to M2, P 2N+4 Transport to the preparatory position located between R1 and L2;

[0066] Step S4: Following step S3, sequentially process workstations Sa2 to Sa... N The pallets inside are processed, and once all pallets have been processed, the next cycle begins.

[0067] The specific steps for processing the tray within workstation Sa2 are as follows:

[0068] After workpiece P3 is processed, workpiece P4 begins processing. Workpiece P3 is marked, pushed out of R2, and released. 2N+3 After workpiece P4 is processed and transported to the right workstation of workstation Sa2, it is marked, pushed out to L2, and released. 2N+4 Transport P to the left working position of workstation Sa2. 2N+5 Transported to M3, P 2N+6 Transport to the preparatory position located between R2 and L3;

[0069] Where N≥3, i=1,2,…,N, and j is an integer.

[0070] In this invention, the terms "first," "second," and "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "front," and "rear" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this invention. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0072] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A method for tray-based traffic splitting in a serial workstation, characterized in that: A left workstation Sa1 and a right workstation Sa2 are spaced apart on the same side of a conveyor line that transports goods from left to right. The conveyor line has a first left position corresponding to the left working position of Sa1, a first right position corresponding to the right working position of Sa1, a second left position corresponding to the left working position of Sa2, a second right position corresponding to the right working position of Sa2, a first reserve position corresponding to Sa1, and a second reserve position corresponding to Sa2. A first intermediate position is located between the first left and first right positions, and a second intermediate position is located between the second left and second right positions. The first reserve position is located to the left of the first left position, and the second reserve position is located between the first right and second left positions. Card readers corresponding to the first reserve position, the first intermediate position, the second reserve position, and the second intermediate position are installed on the conveyor line. The diversion method includes the following steps: Step S1: Number the unprocessed pallets on the conveyor line consecutively from right to left, starting from the first number. The pallet numbered j is represented as P. j Pallets with odd numbers can only enter the right workstation, and pallets with even numbers can only enter the left workstation. After steps S2, P1 and P2 are sequentially transported to the first right position and the first left position, they are transferred to the right working position and the left working position of Sa1, respectively. P3 and P4 are transferred to the right working position and the left working position of Sa2, and P5 is transported to the first middle position. After the workpieces of P1 are processed in steps S3 and S1, the workpieces of P2 are processed. P1 is marked and pushed to the first right position and released. P5 is transported to the first right position and transferred to the right working position of Sa1. After the workpieces of P2 are processed, P2 is marked and pushed to the first left position and released. P6 is transported to the left working position of Sa1. P7 is transported to the second middle position and P8 is transported to the second preparatory position. The tray is equipped with a chip that stores workpiece information. After the workpiece is processed, a mark indicating completion is set in the chip. When the card reader detects that the tray is marked, the tray is released; otherwise, the tray is blocked. After the workpieces on P3 are processed in steps S4 and P3, the workpiece on P4 is processed. P3 is marked and pushed to the second right position and released. P7 is transported to the right working position of Sa2. After the workpiece processing of P4 is completed, P4 is marked and pushed to the second left position and released. P8 is transported to the left working position of Sa2 and enters the next cycle. Among them, the pallets processed by the later workstations must wait for the pallets processed by the earlier workstations to be released before they can be released; When Sa1 malfunctions, the remaining unprocessed pallets are temporarily not released. Sa1 is reset to push out its internal pallets, and the pallet is detected using the card reader corresponding to the first intermediate position. If it is detected that it has been marked, it is released. If it is not marked, it is transported to the second reserve position and sent to the second left or second right position of Sa2 for processing according to its number. If Sa1 returns to normal after being reset, the remaining unprocessed pallets are renumbered sequentially from right to left starting from the beginning, and the workpieces are processed according to steps S1 to S4. If Sa1 still malfunctions after being reset, Sa1 is blocked, and only Sa2 is used for processing. After Sa1 returns to normal, the workpieces are processed again according to steps S1 to S4.

2. The serial workstation tray traffic splitting method according to claim 1, characterized in that: There are two first middle bits between the first left bit and the first right bit, and there are two second middle bits between the second left bit and the second right bit.

3. A serial workstation tray routing method according to claim 1 or 2, characterized in that: When Sa2 malfunctions, the tray will not be assigned to Sa2 temporarily. Sa2 will be reset to push out its internal tray, and the card reader corresponding to the second intermediate bit will be used to detect the tray. If it is detected that it has been marked, it will be allowed to pass. If it has not been marked, it will be blocked and allowed to pass after manual processing.

4. The serial workstation tray routing method according to claim 3, characterized in that: If Sa2 returns to normal after reset, continue to allocate trays to Sa2; otherwise, disable Sa2 and rely solely on Sa1 for processing.

Images