Simple sorting station control method built based on roller conveying line

Abstract

The invention relates to the technical field of conveying line control systems, and provides a simple sorting station control method based on roller conveying line construction, and efficient and flexible operation of a sorting station is achieved by dynamically distributing a conveying path and independently triggering an outbound instruction. The method solves the problems that an existing sorting station lacks deep cooperation with a conveying line, cannot dynamically adjust operation logic and excessively depends on hardware equipment. The sorting station is emptied through initialization operation, a conveying path is dynamically distributed, and an independent outbound instruction is generated after sorting is completed. The method has the beneficial effects that the utilization rate of the sorting station is increased, invalid overstock is reduced, the equipment cost and maintenance complexity are reduced, meanwhile, the cooperative capacity of the sorting station and a conveying line is enhanced, and the overall logistics automation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor line control systems, and particularly to a simple picking station control method based on a roller conveyor line. Background Art

[0002] In the field of in-plant logistics automation, the picking station, as an important node connecting the automated storage and retrieval system and the conveyor line, is mainly used to implement the "goods-to-person" picking operation. In the prior art, the picking station is usually an independent device, and its working process is as follows: The turnover boxes (including source boxes and order boxes) need to be scanned by a barcode reader for the box code and then wait until the corresponding task picking position in the picking station is idle before they can enter. During the picking process, the source box and the order box need to strictly synchronously complete the picking task before they can jointly leave the station and return to the conveyor line.

[0003] However, the prior art has the following significant defects: Since the picking station needs to perform IO signal docking with the conveyor line and must rely on the barcode reader to obtain the turnover box information, the turnover box needs to repeatedly wait for signal confirmation and box code reading before entering the station, and the average waiting time increases by more than 30%, which is extremely likely to cause congestion at the entrance of the conveyor line.

[0004] The existing system only supports fixed picking position allocation. When the target picking position is occupied, the turnover box needs to continuously wait until the target position is idle. For example, the order box task can only be allocated to 2 preset fixed picking positions, and the source box task is limited to 4 fixed picking positions, and cannot be dynamically adjusted according to the real-time idle situation, resulting in insufficient utilization of the picking station. The source box and the order box must wait until all tasks in the same batch are completed before they can jointly leave the station. If a certain box completes the picking in advance, it still needs to be forced to stay and wait, resulting in ineffective backlog in the picking station. The configuration of the independent barcode reader and the complex signal docking mechanism between the picking station and the conveyor line increase the equipment cost and significantly improve the maintenance complexity.

[0005] The root cause of the above problems is that the existing picking station operates as an independent closed system, lacks the deep coordination ability with the conveyor line, cannot dynamically adjust the operation logic based on the real-time state of the conveyor line, and overly relies on hardware devices to track the turnover box. Summary of the Invention

[0006] In view of the above technical problems, the present invention provides a simple picking station control method based on a roller conveyor line, which is used to solve the problems that the existing picking station operates as an independent closed system, lacks the deep coordination ability with the conveyor line, cannot dynamically adjust the operation logic based on the real-time state of the conveyor line, and overly relies on hardware devices to track the turnover box.

[0007] The present invention provides a simple picking station control method based on a roller conveyor line, including:

[0008] Initialization operation: Detect the emptied state of the turnover boxes in the picking station. After confirmation of emptiness, activate the incoming box channel.

[0009] Task processing operation:

[0010] Identify the task type of the turnover boxes entering the incoming box channel. The task types include direct passing type and sorting and processing type.

[0011] Dynamically allocate the conveying path based on the task type and the real-time picking position status, where the sorting and processing type triggers the spare picking position allocation mechanism.

[0012] Outbound control operation:

[0013] Generate an independent outbound instruction after the sorting and processing is completed.

[0014] Control the independent output of the turnover boxes that have completed sorting, without the need for synchronous processing of related task boxes.

[0015] Furthermore, the simple picking station control method based on the roller conveyor line described in the present invention includes:

[0016] Initialization stage: Empty the turnover boxes at all transfer machine positions and picking positions in the picking station, continuously detect the emptied state of the turnover boxes until the preset emptying threshold is met, and allow the accumulation area at the incoming box opening to receive the turnover boxes conveyed by the conveyor line.

[0017] Incoming box scheduling stage:

[0018] When a turnover box is detected in the accumulation area at the incoming box opening, report the box number of the current turnover box to the host computer of the picking station.

[0019] The host computer issues the corresponding task type according to the box number. The task types include passing tasks and picking tasks.

[0020] If the task type is a passing task, control the turnover box to be directly output to the accumulation area at the outgoing box opening along the conveying path.

[0021] If the task type is a picking task, execute the dynamic allocation logic of the picking position:

[0022] When the task type is an order box task, sequentially determine whether the target order box picking position and the spare order box picking position are idle; if there is an idle picking position, schedule the turnover box to the idle picking position and send a task target position correction instruction to the host computer; if there is no idle picking position, generate a forced outbox instruction to control the output of the turnover box.

[0023] When the task type is the source box task, sequentially determine whether the picking positions of the target source box and the spare source box are idle; if there is an idle picking position, dispatch the turnover box to the idle picking position and send a task target position correction instruction to the host computer; if there is no idle picking position, generate a forced out-box instruction to control the output of the turnover box.

[0024] Picking operation stage:

[0025] When both the order box and the source box reach their corresponding picking positions, the host computer sends picking information including the goods type, quantity, and target position to the all-in-one machine.

[0026] After manual picking is completed, trigger the confirmation button at the picking position, and the trigger signal of the confirmation button is independently reported to the host computer.

[0027] The host computer generates an outbound instruction based on the received trigger signal, controls the corresponding turnover box to output from the accumulation area at the out-box port, and feeds back an out-box completion signal to the conveyor line control system.

[0028] The continuous detection of the turnover box empty state includes:

[0029] Perform a photoelectric sensor scan on the position of the transfer machine. If there is no signal indicating the presence of a turnover box in three consecutive scans, it is determined that the emptying is completed.

[0030] If the emptying completion condition is not met, loop through the transfer machine reset operation until the emptying threshold is satisfied.

[0031] Furthermore, for the simple picking station control method based on the roller conveyor line described in the present invention, the picking position dynamic allocation logic further includes:

[0032] Order box task priority allocation rule: When the picking position of the target order box is occupied, it is only allowed to be allocated to 1 specified spare order box picking position.

[0033] Source box task dynamic allocation rule: When the picking position of the target source box is occupied, it is allowed to be allocated to the idle position among any 3 spare source box picking positions.

[0034] Furthermore, for the simple picking station control method based on the roller conveyor line described in the present invention, the outbound instructions for the box and the source box are independently triggered, including:

[0035] After the source box completes picking, manually trigger the confirmation button at the source box picking position to independently generate a source box outbound request.

[0036] After the order box completes picking, manually trigger the confirmation button at the order box picking position to independently generate an order box outbound request.

[0037] The host computer asynchronously processes the outbound requests for the source box and the order box without waiting for the same task box to complete picking.

[0038] Furthermore, for the simple picking station control method based on a roller conveyor line according to the present invention, the picking station includes:

[0039] Six fixed-layout picking positions, where the order box picking positions are distributed on both sides of the picking station, and the source box picking positions are distributed in the middle of the picking station;

[0040] A two-way box inlet channel that supports the conveyor line flow direction from left to right or from right to left, and the picking position numbers are independent of the flow direction;

[0041] Each picking position is equipped with an independent photoelectric sensor and a confirmation button, and the photoelectric sensor is used to detect the in-place status of the turnover box.

[0042] Furthermore, for the simple picking station control method based on a roller conveyor line according to the present invention, the box number of the turnover box is directly obtained through the conveyor line control system, and the box number is obtained by parsing the communication protocol between the conveyor line PLC and the host computer without the need to configure an independent barcode reader.

[0043] Furthermore, for the simple picking station control method based on a roller conveyor line according to the present invention, the execution of the forced box-out instruction includes:

[0044] Mark the turnover box that has not been assigned to a picking position as the "unprocessed" status;

[0045] Control the turnover box to be directly output to the accumulation area at the box-out port along a preset path;

[0046] Report the abnormal box-out record and the reason for non-processing of the turnover box to the host computer.

[0047] Furthermore, for the simple picking station control method based on a roller conveyor line according to the present invention, the generation logic of the picking information includes:

[0048] The host computer queries the database according to the box number of the turnover box to obtain the type, quantity of the goods to be picked, and the target order box number;

[0049] Map the information to the integrated machine display screen at the corresponding picking position, and the display format is "Source box [box number] → Order box [box number]: Goods type X, Quantity Y";

[0050] When the picking position assignment is corrected, synchronously update the source box / order box position information displayed on the integrated machine.

[0051] Furthermore, for the simple picking station control method based on a roller conveyor line according to the present invention, the response to the task target position correction instruction includes:

[0052] After the host computer receives the correction instruction, it updates the target picking position information of the corresponding turnover box in the task database;

[0053] Send a path adjustment instruction to the conveyor line control system to move the turnover box along the new path to the corrected picking position;

[0054] Record the correction operation log, including the original target position, the corrected target position, and the operation timestamp.

[0055] Furthermore, for the simple picking station control method based on the roller conveyor line described in the present invention, the output path control of the turnover box includes:

[0056] Enable the direct-through mode for the task turnover box and prohibit the transfer machine from intervening in path allocation;

[0057] Enable the dynamic routing mode for the picking task turnover box and calculate the optimal path in real time according to the picking position allocation result;

[0058] When the conveyor line congestion index exceeds the preset threshold, forcibly start the direct-through mode and send an alarm signal to the host computer.

[0059] Advantages of the present invention:

[0060] By dynamically allocating picking positions and adjusting the path of the turnover box according to the real-time idle situation, the present invention avoids the continuous waiting of the turnover box when the target picking position is occupied, thereby significantly improving the utilization rate and picking efficiency of the picking station.

[0061] The present invention can dynamically adjust the operation logic based on the real-time state of the conveyor line. Especially when the conveyor line congestion index exceeds the preset threshold, it forcibly starts the direct-through mode, effectively reducing the congestion of the conveyor line and improving the overall logistics efficiency.

[0062] The present invention directly obtains the box number of the turnover box through the conveyor line control system without the need to configure an additional independent barcode reader. This not only reduces the equipment cost, but also simplifies the signal docking mechanism between the picking station and the conveyor line, reduces the maintenance complexity, and further reduces the operation cost. The picking station supports two-way incoming box channels and can flexibly adapt to the conveyor line flow in different directions. This design enhances the flexibility and adaptability of the system, enabling it to handle more diverse logistics scenarios.

[0063] The present invention allows the source box and the order box to leave the station independently after picking without waiting for the synchronous processing of the boxes with the same task. This improvement reduces the ineffective backlog, further improves the picking efficiency, and optimizes the outbound process, making the logistics operation smoother.

[0064] In summary, these beneficial effects of the present invention together improve the overall performance of the picking station, bringing substantial improvements and benefits to the logistics industry. Brief Description of the Drawings

[0065] To more clearly illustrate the technical solutions of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on the drawings without creative efforts.

[0066] Figure 1 It is a schematic diagram of the construction of a simple picking station provided by the present invention.

[0067] Figure 2 It is a flowchart of the incoming box scheduling control method for the simple picking station provided by the present invention.

[0068] Figure 3 It is a flowchart of the picking scheduling control method for the simple picking station provided by the present invention.

[0069] Figure 4 It is a flow chart from left to right of the simple picking station provided by the present invention.

[0070] Figure 5 It is a flow chart from right to left of the simple picking station provided by the present invention. Detailed Description of the Embodiments

[0071] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the specific embodiments and corresponding drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. The technical solutions provided by each embodiment of the present invention will be described in detail below with reference to the drawings.

[0072] To better understand the objectives of the present invention, the present invention will be further described in detail below.

[0073] The present invention provides a control method for a simple picking station built based on a roller conveyor line, including:

[0074] Initialization operation: Detect the empty state of the turnover boxes in the picking station, and activate the incoming box channel after confirmation.

[0075] Task processing operation:

[0076] Identify the task types of the turnover boxes entering the incoming box channel, and the task types include direct passing type and sorting and processing type;

[0077] Dynamically allocate the conveying path based on the task type and the real-time picking position status, and the sorting and processing type triggers the spare picking position allocation mechanism;

[0078] Outbound control operation:

[0079] Generate an independent outbound instruction after the sorting process is completed;

[0080] Control the independent output of the tote boxes that have completed sorting, without the need for synchronous processing related to task boxes.

[0081] Initialization operation: By detecting the emptied state of the tote boxes in the picking station, ensure that the picking station is in a ready state before each operation. When it is confirmed that the station is emptied, activate the incoming tote box channel to prepare for the entry of the next tote box.

[0082] Task processing operation:

[0083] Task type recognition: The system can automatically recognize the task types of the tote boxes entering the incoming tote box channel, including the direct passing type and the sorting processing type. This automatic recognition ability improves the automation level of the picking station.

[0084] Dynamic path allocation: Based on the task type and the real-time status of the picking positions, the system dynamically allocates the conveying paths. Especially when encountering tote boxes of the sorting processing type, it will trigger the backup picking position allocation mechanism to ensure that each tote box can be processed in a timely manner.

[0085] Outbound control operation: After the sorting process is completed, the system automatically generates an independent outbound instruction and controls the independent output of the tote boxes that have completed sorting. This independent output method reduces the ineffective backlog of tote boxes and improves the outbound efficiency.

[0086] By dynamically allocating picking positions and conveying paths, the long waiting time of tote boxes is avoided, thus improving the picking efficiency. The system can dynamically adjust the operation logic according to the real-time status of the conveyor line, reducing the congestion of the conveyor line. By reducing hardware dependence and simplifying the signal docking mechanism, the equipment cost and maintenance complexity are reduced. The picking station supports two-way incoming tote box channels, can adapt to the flow directions of conveyor lines in different directions, enhancing the flexibility of the system. Allowing tote boxes to exit independently reduces the ineffective backlog and optimizes the outbound process.

[0087] The simple picking station control method based on a roller conveyor line is applicable to various logistics scenarios that require efficient picking and conveying, especially those that need to flexibly respond to different logistics requirements. For example, in e-commerce warehouses, logistics distribution centers, manufacturing production lines, etc., the application of this picking station can be seen, which can help enterprises improve logistics efficiency, reduce operating costs, and enhance market competitiveness.

[0088] In summary, this picking station control method not only has significant technical advantages but also can play an important role in multiple logistics scenarios, providing strong support for the development of the logistics automation field.

[0089] Specifically, the simple picking station control method based on a roller conveyor line according to the present invention includes:

[0090] Initialization stage: Empty all transfer machine positions and the turnover boxes at the picking positions in the picking station, continuously detect the empty state of the turnover boxes until the preset empty threshold is met, and allow the accumulation area at the incoming box port to receive the turnover boxes conveyed by the conveyor line;

[0091] Incoming box scheduling stage:

[0092] When a turnover box is detected in the accumulation area at the incoming box port, report the box number of the current turnover box to the host computer of the picking station;

[0093] The host computer issues the corresponding task type according to the box number, and the task type includes passing tasks and picking tasks;

[0094] If the task type is a passing task, control the turnover box to be directly output to the accumulation area at the outgoing box port along the conveyor line path;

[0095] If the task type is a picking task, execute the dynamic allocation logic of the picking position:

[0096] When the task type is an order box task, sequentially determine whether the target order box picking position and the spare order box picking position are idle; if there is an idle picking position, schedule the turnover box to the idle picking position and send a task target position correction instruction to the host computer; if there is no idle picking position, generate a forced outbox instruction to control the output of the turnover box;

[0097] When the task type is a source box task, sequentially determine whether the target source box picking position and the spare source box picking position are idle; if there is an idle picking position, schedule the turnover box to the idle picking position and send a task target position correction instruction to the host computer; if there is no idle picking position, generate a forced outbox instruction to control the output of the turnover box;

[0098] Picking operation stage:

[0099] When both the order box and the source box reach the corresponding picking positions, the host computer sends picking information including the goods type, quantity, and target position to the all-in-one machine;

[0100] After manual picking is completed, trigger the confirmation button at the picking position, and the trigger signal of the confirmation button is independently reported to the host computer;

[0101] The host computer generates an outbound instruction according to the received trigger signal, controls the corresponding turnover box to be output from the accumulation area at the outgoing box port, and feeds back an outbox completion signal to the conveyor line control system.

[0102] Initialization phase: The picking station first clears all transfer vehicle positions and the tote boxes at the picking positions, and continuously detects the cleared state until the preset clearing threshold is met. This step ensures that the picking station is in a ready state before starting operations, allowing the infeed buffer area to receive tote boxes conveyed by the conveyor line.

[0103] Infeed scheduling phase:

[0104] When the infeed buffer area detects a tote box, it reports the box number of the current tote box to the host computer of the picking station.

[0105] The host computer identifies the task type based on the box number, including passing tasks and picking tasks.

[0106] If it is a passing task, the tote box will be directly output to the outfeed buffer area along the conveyor path.

[0107] If it is a picking task, the dynamic allocation logic for picking positions is executed. For order box tasks and source box tasks, the system will sequentially determine whether the target picking position and the spare picking position are idle. If there is an idle picking position, the tote box will be scheduled to that position, and a task target position correction instruction will be sent to the host computer; if there is no idle picking position, a forced outfeed instruction will be generated to control the output of the tote box.

[0108] Picking operation phase:

[0109] When both the order box and the source box reach their corresponding picking positions, the host computer sends picking information to the all-in-one machine, including the goods type, quantity, and target location.

[0110] After manually completing the picking according to the picking information, the confirmation button at the picking position is triggered. The trigger signal of the confirmation button is independently reported to the host computer.

[0111] The host computer generates an outbound instruction based on the received trigger signal, controls the corresponding tote box to output from the outfeed buffer area, and feeds back an outfeed completion signal to the conveyor line control system.

[0112] Technical features:

[0113] Dynamic allocation of picking positions: Dynamically allocate the conveyor path according to the real-time status of picking positions and task types, improving the picking efficiency and the utilization rate of the picking station.

[0114] Task type identification: Identify the task type through the box number, realizing the automated processing of picking tasks and enhancing the automation level of the system.

[0115] Simplified operation process: Trigger the outbound instruction through the confirmation button, simplifying the operation process and reducing the complexity of manual operations.

[0116] Application value:

[0117] Improve the level of logistics automation: Through automated processing and dynamic scheduling, the level of automation in logistics operations has been improved, and labor costs have been reduced.

[0118] Enhance system flexibility: The system can flexibly handle conveyor line flows in different directions and different types of picking tasks, enhancing the flexibility and adaptability of the system.

[0119] Optimize the logistics process: By optimizing the picking and outbound processes, the ineffective backlog of turnover boxes and the congestion of conveyor lines have been reduced, improving the overall logistics efficiency.

[0120] In summary, the picking station control method not only has an efficient and flexible workflow and technical characteristics, but also demonstrates important application value in the field of logistics automation, providing new ideas and solutions for the development of the logistics industry.

[0121] The continuous detection of the emptied state of the turnover box includes:

[0122] Perform a photoelectric sensor scan on the position of the transfer machine. If no signal indicating the presence of a turnover box is detected in 3 consecutive scans, it is determined that the emptying is completed.

[0123] If the condition for completed emptying is not met, the transfer machine reset operation is looped until the emptying threshold is satisfied.

[0124] Workflow:

[0125] Photoelectric sensor scan: First, perform a photoelectric sensor scan on the position of the transfer machine to detect the presence of a turnover box. The photoelectric sensor determines the presence of an object by emitting a light beam and detecting the reflected or transmitted light.

[0126] Determine the emptied state: If no signal indicating the presence of a turnover box is detected in 3 consecutive scans, it is determined that the position of the transfer machine has been emptied. This means that this position can be safely used for the next picking operation.

[0127] Loop reset operation: If the condition for completed emptying is not met, that is, if a signal indicating the presence of a turnover box is detected at least once in 3 consecutive scans, the transfer machine reset operation is looped. The reset operation may involve moving the transfer machine to its initial position or readjusting its state to ensure the accuracy of the detection. This process will continue until the emptying threshold is satisfied, that is, the position of the transfer machine is confirmed to be emptied.

[0128] Technical principle:

[0129] Photoelectric sensor: A photoelectric sensor is a sensor that works based on the principle of the photoelectric effect. It usually consists of a light source, an optical path, and a photoelectric element. When the light emitted by the light source irradiates the surface of an object, part of the light is reflected or transmitted, and the photoelectric element receives and converts these light signals into electrical signals, thereby achieving the detection of the presence or absence of an object.

[0130] Reset operation: The reset operation is a process to ensure that the transfer machine is in the correct state or position. It may involve operations such as mechanical movement, electrical adjustment, or software reset, depending on the design and working principle of the transfer machine. The purpose of the reset operation is to enable the transfer machine to accurately perform subsequent operation tasks.

[0131] Function:

[0132] Picker station ready: By continuously detecting the emptied state of the turnover box and performing necessary reset operations, it can be ensured that all transfer machine positions at the picker station are available before starting operations. This helps reduce operation delays and errors and improves picking efficiency.

[0133] Improve operation accuracy: The accurate detection of the emptied state helps avoid operation errors caused by residues or misplacement of the turnover box during the picking process. By ensuring that each transfer machine position is clean and available, the picking accuracy and reliability can be improved.

[0134] Specifically, for the simple picker station control method based on the roller conveyor line described in the present invention, the dynamic allocation logic of the picking positions further includes:

[0135] Order box task priority allocation rule: When the picking position of the target order box is occupied, it is only allowed to be allocated to 1 specified spare order box picking position.

[0136] Source box task dynamic allocation rule: When the picking position of the target source box is occupied, it is allowed to be allocated to the idle position among any 3 spare source box picking positions.

[0137] Order box task priority allocation rule:

[0138] Working principle: When the picking position of the target order box is occupied, the system does not randomly allocate the order box task to other idle picking positions, but only allows it to be allocated to 1 specified spare order box picking position. This allocation method ensures that the order box task can obtain the picking position preferentially, reducing the order processing delay caused by the occupied picking position.

[0139] Advantages:

[0140] Improve order processing speed: By setting the priority allocation rule for the order box task, it is ensured that the order box can quickly obtain the picking position, thus accelerating the order processing speed.

[0141] Reduce order processing delay: Avoid the order processing delay caused by the occupied picking position, improving the accuracy and efficiency of order processing.

[0142] Function: This rule improves the order processing ability of the picking station by ensuring that the order bin tasks can obtain picking positions preferentially, providing strong support for quickly responding to market demands.

[0143] Dynamic allocation rule for source bin tasks:

[0144] Working principle: When the picking position of the target source bin is occupied, the system does not limit the source bin task to a specific alternative picking position, but allows it to be allocated to the idle position among any 3 alternative source bin picking positions. This allocation method provides more flexibility, enabling the source bin task to select the most suitable picking position according to the actual situation.

[0145] Advantages:

[0146] Improve the utilization rate of picking positions: By allowing the source bin task to be allocated to the idle position among any 3 alternative picking positions, the utilization rate of picking positions is improved, and the idle time of picking positions is reduced.

[0147] Enhance system flexibility: This rule enables the system to more flexibly respond to the requirements of different source bin tasks, improving the adaptability and response speed of the picking station.

[0148] Function: This rule enhances the flexibility and response speed of the picking station by providing dynamic allocation options for picking positions, contributing to coping with changing logistics demands.

[0149] In summary, the dynamic allocation logic of picking positions sets different allocation rules for order bin tasks and source bin tasks, ensuring the priority processing of order bin tasks, improving the utilization rate of picking positions and the flexibility of the system, thus overall improving the picking efficiency and processing ability of the picking station.

[0150] Specifically, for the simple picking station control method based on the roller conveyor line described in the present invention, the outbound instructions for the bins and source bins are triggered independently, including:

[0151] After the source bin completes picking, manually trigger the source bin picking position confirmation button to independently generate a source bin outbound request;

[0152] After the order bin completes picking, manually trigger the order bin picking position confirmation button to independently generate an order bin outbound request;

[0153] The host computer asynchronously processes the outbound requests of the source bin and the order bin without waiting for the same task bin to complete picking.

[0154] Workflow:

[0155] Trigger the confirmation button: When the source bin or the order bin completes picking, manually trigger the confirmation button for the corresponding picking position respectively. The triggering of this button marks the completion of the picking operation and prepares to enter the outbound process.

[0156] Generate outbound requests: The trigger signal of the confirmation button is reported independently to the host computer. After receiving the signal, the host computer generates outbound requests for the source bin and the order bin respectively. This means that the outbound process for each bin is independent and will not interfere with each other.

[0157] Asynchronously process outbound requests: The host computer asynchronously processes the outbound requests for the source bin and the order bin. This means that the host computer can process multiple outbound requests simultaneously without waiting for the picking of the same task bin to be completed. This processing method greatly improves the outbound efficiency and reduces the waiting time.

[0158] Technical features:

[0159] Independent trigger: The trigger of the outbound instruction is independent, and the outbound process of each bin will not be affected by other bins. This independence ensures that the picking station can process multiple outbound requests simultaneously, improving the outbound efficiency.

[0160] Asynchronous processing: The host computer asynchronously processes the outbound requests, which means that the processing process will not be interrupted by waiting for a certain bin to complete picking. This processing method further improves the outbound efficiency and reduces the overall operation time.

[0161] Functions:

[0162] Improve outbound efficiency: By independently triggering and asynchronously processing outbound requests, the outbound efficiency of the picking station is significantly improved. This efficiency improvement helps to reduce the waiting time and speed up the logistics turnover speed.

[0163] Optimize the operation process: The independent trigger and asynchronous processing of the outbound instruction optimize the operation process of the picking station. It enables the picking station to more flexibly meet different logistics requirements and improves the overall operation efficiency.

[0164] In summary, the independent trigger method of the outbound instruction is an efficient and flexible control method for the picking station. It not only improves the outbound efficiency of the picking station but also optimizes the operation process, providing new ideas and solutions for the development of the logistics automation field.

[0165] Specifically, for the simple picking station control method based on the roller conveyor line described in the present invention, the picking station includes:

[0166] 6 fixed-layout picking positions, where the order bin picking positions are distributed on both sides of the picking station, and the source bin picking positions are distributed in the middle of the picking station;

[0167] A two-way bin inlet channel that supports the conveyor line flow from left to right or from right to left, and the picking position numbers are independent of the flow direction;

[0168] Each picking position is equipped with an independent optoelectronic sensor and a confirmation button. The optoelectronic sensor is used to detect the arrival status of the turnover box.

[0169] Picking position layout: The picking station has 6 picking positions with a fixed layout. Among them, the order box picking positions are distributed on both sides of the picking station, and the source box picking positions are distributed in the middle of the picking station. This layout not only considers the picking efficiency but also facilitates personnel operation and the flow of turnover boxes.

[0170] Two-way box inlet channel: The picking station supports a two-way box inlet channel, that is, the conveying line can flow from left to right or from right to left. This design increases the flexibility of the picking station and enables it to adapt to different logistics requirements.

[0171] The picking position number is independent of the flow direction: The numbering of the picking positions is not affected by the flow direction of the conveying line. This means that no matter which direction the turnover box enters the picking station, it will not affect the allocation and use of the picking positions.

[0172] Technical features:

[0173] Independent optoelectronic sensor: Each picking position is configured with an independent optoelectronic sensor to detect the arrival status of the turnover box. This configuration ensures that the turnover box can accurately reach the designated picking position, improving the accuracy of picking.

[0174] Independent confirmation button: Each picking position is also equipped with an independent confirmation button for manually triggering the outbound request. This design makes the picking and outbound processes more autonomous and flexible.

[0175] Autonomy and flexibility: Since each picking position is configured with an independent optoelectronic sensor and a confirmation button, they can independently complete the picking and outbound processes without relying on other devices or systems. This autonomy improves the flexibility and efficiency of the picking station.

[0176] Functions:

[0177] Improve picking efficiency: Through the design of a fixed layout and a two-way box inlet channel, the picking station can efficiently handle turnover boxes from different directions. At the same time, the independently configured optoelectronic sensor and confirmation button enable each picking position to independently complete the picking and outbound processes, further improving the picking efficiency.

[0178] Enhance flexibility: The design of the two-way box inlet channel and the independence of the picking position number from the flow direction enable the picking station to adapt to different logistics requirements and scenarios. This flexibility allows the picking station to perform excellently in different logistics environments.

[0179] Optimize the operation process: This layout and configuration of the picking station make the operation process smoother and more efficient. The turnover box can quickly reach the designated picking position for picking and then quickly leave the picking station through an independent outbound process.

[0180] In summary, the layout and configuration of the picking station demonstrate high flexibility and efficiency in terms of design, technical features, and functions. Such a picking station can not only meet different logistics requirements but also improve the picking efficiency and optimize the operation process.

[0181] Specifically, for the simple picking station control method based on a roller conveyor line described in the present invention, the box number of the turnover box is directly obtained through the conveyor line control system, and the box number is obtained by parsing the communication protocol between the conveyor line PLC and the host computer, without the need to configure an independent barcode reader.

[0182] Workflow:

[0183] Box number acquisition: When the turnover box moves on the roller conveyor line, the conveyor line control system will capture and identify the box number information on the turnover box in real time. This process is fully automated without manual intervention.

[0184] Box number parsing: The identified box number information is then transmitted to the conveyor line PLC (programmable logic controller). As the control core, the PLC is responsible for preliminarily processing the received box number data and parsing it through the communication protocol with the host computer.

[0185] Information transmission: The parsed box number information is accurately transmitted to the host computer for further processing and use by the picking station control system. Throughout the process, there is no need to configure an independent barcode reader device, greatly simplifying the operation process.

[0186] Technical principle:

[0187] Automatic identification technology: The conveyor line control system may adopt advanced image recognition or RFID (radio frequency identification) technology to automatically identify and read the box number information on the turnover box. These technologies have the characteristics of high precision and high speed, and can meet the requirements of real-time and accuracy of the picking station.

[0188] Communication protocol: Data transmission between the conveyor line PLC and the host computer is carried out through a predefined communication protocol. This protocol ensures the integrity and accuracy of the data, simplifies the data transmission process, and improves the overall operation efficiency of the system.

[0189] System integration: Through a highly integrated design, the entire system realizes seamless connection from box number identification to data transmission and then to system processing. Such an integrated design not only improves the stability and reliability of the system but also reduces the equipment configuration and maintenance costs.

[0190] Function:

[0191] Improve picking efficiency: By automatically obtaining the box number and transmitting it to the host computer in real time, the picking station can quickly respond to and process picking tasks. This significantly shortens the picking cycle and improves picking efficiency.

[0192] Simplify equipment configuration: There is no need to configure an independent barcode reader device, reducing the hardware cost and maintenance difficulty of the picking station. At the same time, it also reduces the downtime and maintenance cost caused by barcode reader failures.

[0193] Enhance system flexibility: Due to the highly integrated design concept, the entire system has higher flexibility and scalability. The system configuration and functional modules can be easily adjusted according to actual needs to meet the picking requirements in different scenarios.

[0194] In summary, this method of directly obtaining the box number of the turnover box through the conveyor line control system plays an important role in improving the efficiency of the picking station and simplifying the equipment configuration. It not only enhances the automation level and operation efficiency of the picking station but also provides strong support for the intelligent and unmanned picking operation.

[0195] Specifically, for the simple picking station control method based on the roller conveyor line described in the present invention, the execution of the forced box-out instruction includes:

[0196] Mark the turnover boxes not assigned to the picking position as the "unprocessed" status;

[0197] Control the turnover boxes to be directly output to the accumulation area at the box-out port along the preset path;

[0198] Report the abnormal box-out record and the reason for not being processed of the turnover box to the host computer.

[0199] Execution process:

[0200] Mark the unprocessed status: When the picking station control system detects that there are turnover boxes not assigned to any picking position, it will immediately mark these turnover boxes as the "unprocessed" status. This step is the basis for subsequent processing, ensuring that the system can accurately identify and process these turnover boxes in abnormal states.

[0201] Control the output to the box-out port: Next, the system will control these turnover boxes marked as "unprocessed" to be directly output to the accumulation area at the box-out port along a specific path according to the preset path and rules. This step aims to quickly remove the abnormal turnover boxes in the picking station to prevent them from causing blockages or affecting the normal operation of other turnover boxes.

[0202] Report abnormal records: Finally, the system will report the abnormal out-of-box records of these turnover boxes and the reasons for non-processing to the host computer. This step is crucial for subsequent problem analysis and system optimization. It can help managers understand the possible problems during the operation of the picking station and take corresponding measures for improvement.

[0203] Technical implementation method:

[0204] Status detection and marking: This step may rely on sensors and identification technologies to achieve real-time monitoring and accurate marking of the status of turnover boxes.

[0205] Path control and output: Controlling the turnover box to be output to the out-of-box port along the preset path may rely on the precise control of automated equipment such as the conveyor line control system and PLC.

[0206] Data reporting and analysis: Reporting the abnormal out-of-box records and reasons may be achieved through communication protocols and data transmission technologies to ensure the accuracy and timeliness of information.

[0207] Function and significance

[0208] Improve picking efficiency: By executing the forced out-of-box instruction, abnormal turnover boxes in the picking station can be quickly cleared, preventing them from causing blockages or delaying other normal operations, thereby improving the overall operating efficiency of the picking station.

[0209] Optimize the operation process: By promptly reporting the abnormal out-of-box records and reasons, it can help managers better understand the operation of the picking station, discover potential problems and take corresponding measures for optimization and improvement.

[0210] Enhance system stability: By effectively handling abnormal turnover boxes, the downtime and maintenance costs of the picking station caused by abnormal situations can be reduced, thereby enhancing the stability and reliability of the system.

[0211] In summary, the execution of the forced out-of-box instruction plays an important role in the control method of the simple picking station built based on the roller conveyor line. It is of great significance for improving picking efficiency, optimizing the operation process, and enhancing system stability.

[0212] Specifically, for the control method of the simple picking station built based on the roller conveyor line described in the present invention, the generation logic of the picking information includes:

[0213] The host computer queries the database according to the turnover box number to obtain the type, quantity of the goods to be picked, and the target order box number;

[0214] Map the above information to the integrated machine display screen at the corresponding picking position, and the display format is "Source box [box number] → Order box [box number]: Goods type X, Quantity Y";

[0215] When the picking location allocation is corrected, synchronously update the source bin / order bin location information displayed on the all-in-one machine.

[0216] Specifically, for the control method of the simple picking station built based on the roller conveyor line described in the present invention, the response to the task target position correction instruction includes:

[0217] After receiving the correction instruction, the host computer updates the target picking position information of the corresponding turnover box in the task database;

[0218] Send a path adjustment instruction to the conveyor line control system to move the turnover box along the new path to the corrected picking position;

[0219] Record the correction operation log, including the original target position, the corrected target position, and the operation timestamp.

[0220] Workflow:

[0221] Data query: First, the host computer queries the corresponding goods information to be picked in the database according to the box number of the turnover box. This information includes the type and quantity of the goods and the number of the target order bin.

[0222] Information mapping and display: The queried information is then mapped to the display screen of the all-in-one machine at the corresponding picking position. The display screen will display this information in the format of "Source bin [box number] → Order bin [box number]: Goods type X, Quantity Y", enabling the operator to clearly understand the specific content of the current picking task at a glance.

[0223] Information synchronous update: If during the picking process, the picking location allocation is corrected (for example, due to some reason, the picking location needs to be changed), the host computer will synchronously update the source bin and order bin location information on the display screen of the all-in-one machine in real time to ensure that the operator can always obtain the most accurate picking information.

[0224] Technical implementation method:

[0225] Database query: This step usually relies on efficient database query technologies such as SQL queries to quickly and accurately obtain the required information.

[0226] Information mapping and display: The display screen of the all-in-one machine may adopt specific integrated software and interface designs to achieve the intuitive display and interaction of information. These software and interfaces usually support multiple data formats and custom display methods to meet the requirements in different scenarios.

[0227] Real-time synchronous update: To achieve synchronous information update, it may be necessary to adopt real-time data transmission technologies (such as WebSocket, etc.) and an efficient interface update mechanism. These technologies can ensure that when the picking position allocation changes, the all-in-one machine display screen can quickly respond and update the display content.

[0228] Functions and significance:

[0229] Improve picking efficiency: By intuitively displaying picking information, operators can quickly understand the specific content of the current picking task, reduce misunderstandings and delays caused by unclear information, and thus improve picking efficiency.

[0230] Enhance picking accuracy: Clear display of picking information helps operators accurately identify information such as the type and quantity of goods and the target order box, reduce the occurrence of picking errors, and improve picking accuracy.

[0231] Enhance system flexibility: When the picking position allocation is corrected, the system can synchronously update the information on the all-in-one machine display screen in real time, enabling operators to quickly adapt to the changes and continue to complete the picking task efficiently. This flexibility helps to enhance the response speed and adaptability of the entire picking system.

[0232] In summary, the picking information generation logic plays an important role in improving picking efficiency and accuracy, and is an indispensable part of the picking station control method.

[0233] Specifically, for the simple picking station control method based on the roller conveyor line described in the present invention, the output path control of the turnover box includes:

[0234] Enable the direct-through mode for the task turnover box, and prohibit the transfer machine from intervening in path allocation;

[0235] Enable the dynamic routing mode for the picking task turnover box, and calculate the optimal path in real time according to the picking position allocation result;

[0236] When the conveyor line congestion index exceeds the preset threshold, forcibly start the direct-through mode and send an alarm signal to the host computer.

[0237] Workflow:

[0238] Receive and process the correction instruction: When the host computer of the picking station receives the task target position correction instruction, it will first parse the instruction to clarify the turnover box to be corrected and its target picking position.

[0239] Update database information: Subsequently, the host computer will search for the record of the corresponding turnover box in the task database and update its target picking position information to the corrected position.

[0240] Send path adjustment instruction: After updating the database information, the host computer will send a path adjustment instruction to the conveyor line control system. This instruction will direct the conveyor line control system to move the turnover box to the corrected picking position according to the new path.

[0241] Record the correction operation log: Finally, the host computer will record the relevant logs of this correction operation, including the original target position, the corrected target position, and the operation timestamp and other information. These log information is of great significance for subsequent problem tracking and analysis.

[0242] Technical implementation method:

[0243] Database operation: Updating the target picking position information of the turnover box in the task database usually relies on efficient database operation technologies, such as the execution of SQL statements, etc.

[0244] Communication protocol: The communication between the host computer and the conveyor line control system usually relies on specific communication protocols, such as TCP / IP, Modbus, etc. These protocols ensure the accurate transmission and reception of instructions.

[0245] Log management system: Recording the correction operation log may rely on a dedicated log management system or database technology for storing and managing log information.

[0246] Function and significance:

[0247] Improve the flexibility of the picking station: Through the response process of the task target position correction instruction, the picking station can flexibly respond to various changes that may occur during the picking process, such as order changes, occupied picking positions, etc. This helps to ensure the smooth progress of the picking task and improve the flexibility of the picking station.

[0248] Enhance picking accuracy: By real-time updating the target picking position information in the task database and sending path adjustment instructions, the picking station can ensure that the turnover box is accurately moved to the corrected picking position. This helps to reduce the occurrence of picking errors and improve the picking accuracy.

[0249] Facilitate problem tracking and analysis: Recording the correction operation log provides an important basis for subsequent problem tracking and analysis. When problems occur during the picking process, managers can refer to the correction operation log to understand the specific situation and cause of the problem, and thus take corresponding solutions.

[0250] In summary, the response process of the task target position correction instruction plays an important role in the picking station control method. It helps to improve the flexibility and accuracy of the picking station and ensure the smooth progress of the picking task.

[0251] The specific embodiments of the present invention are as follows: Such as Figure 1As shown in the schematic diagram of the simple picking station, there are a total of six picking positions, namely two order bin picking positions and four source bin picking positions. Each picking position is equipped with a confirmation button. The two middle positions are source bin picking positions, and the two on both sides are order bin picking positions. Whether the picking station receives bins from the left or the right, the positions of the source bins and order bins remain fixed.

[0252] As Figure 4 The flow diagram of the simple picking station from left to right and Figure 5 As shown in the flow diagram of the simple picking station from right to left, the simple picking station can receive bins from either the left or the right, which is very flexible. The only difference between receiving bins from the left and the right is the stacking positions at the outfeed and infeed ports. The position numbers of other picking positions and transfer machines are the same. Because the numbers are the same, it is more convenient for the host computer to control the picking station.

[0253] As Figure 2 As shown in the flow chart of the bin receiving scheduling control method for the simple picking station, the task of the bin receiving scheduling method for the picking station starts with initialization, clearing the turnover bins at all transfer machine positions and picking positions in the picking station, and determining whether the picking station has cleared the turnover bins. If the turnover bins have been cleared, the initialization is completed. For bins received at the picking port and stacked, the box number of the current turnover bin is reported to the host computer. After receiving the reported box number, the host computer issues the task for this box. Determine the task type of the current turnover bin. If the task type is a passing task, the bin is directly discharged from the outfeed port. After the bin reaches the outfeed port, the box number of this bin is reported to the host computer.

[0254] If the task type is a picking task, determine whether the picking task type is an order bin task or a source bin task.

[0255] If it is an order bin task, determine whether the target order bin picking position is idle. If it is idle, the turnover bin goes to the target order bin picking position. After reaching the order bin picking position, the box number is reported to the host computer. If it is not idle, determine whether the remaining 1 order bin picking position is idle. If the remaining 1 order bin picking position is idle, the turnover bin goes to the idle order bin picking position, report the modified task target position of the order bin to the host computer, and after reaching the order bin picking position, report the box number to the host computer. If the remaining 1 order bin picking position is not idle, the turnover bin is directly discharged from the outfeed port. After the bin reaches the outfeed port, the box number of this bin is reported to the host computer.

[0256] If it is a source bin task, determine whether the picking position of the target source bin is idle. If it is idle, the turnover bin goes to the picking position of the target source bin. After arriving at the picking position of the source bin, report the bin number to the host computer. If it is not idle, determine whether the remaining 3 order bin picking positions are idle. If there are idle picking positions among the remaining 3 order bins, the turnover bin goes to the idle order bin picking position, report the modified task target position of the source bin to the host computer, and after arriving at the picking position of the source bin, report the bin number to the host computer. If the remaining 3 order bin picking positions are not idle, the turnover bin directly exits the bin from the bin outlet. After the turnover bin reaches the bin outlet, report the bin number of this bin to the host computer.

[0257] The in-bin scheduling method of the picking station ends.

[0258] Such as Figure 3 As shown in the flowchart of the picking scheduling control method of the simple picking station, the host computer queries whether the order bin and the source bin of the current task have reached the picking position. If the order bin and the source bin have arrived, then the host computer queries the positions of the picking positions where the source bin and the order bin of the current task are located. After the host computer queries the positions, the host computer issues to the all-in-one machine to display the picking information of the current source bin and order bin, and the operator puts the picked goods types and quantities of the source bin into the order bin according to the display of the all-in-one machine.

[0259] Judge whether the picking of the source bin is completed. If it is not completed, the operator continues to pick. If it has been picked, the operator presses the confirmation button at the picking position of the source bin, and then reports to the host computer that the picking of this source bin is completed. Judge whether the instruction to exit the picking position of this source bin is received. If not, report to the host computer again that the picking of this source bin is completed. If the bin exit instruction is received, the source bin exits the picking station and then exits the bin through the bin outlet of the picking station. After reaching the bin outlet, report the bin number of this bin to the host computer

[0260] Judge whether the picking of the order bin is completed. If it is not completed, the operator continues to pick. If it has been picked, the operator presses the confirmation button at the picking position of the order bin, and then reports to the host computer that the picking of this order bin is completed. Judge whether the instruction to exit the picking position of this order bin is received. If not, report to the host computer again that the picking of this order bin is completed. If the bin exit instruction is received, the order bin exits the picking station and then exits the bin through the bin outlet of the picking station. After reaching the bin outlet, report the bin number of this bin to the host computer

[0261] The picking scheduling method of the picking station ends.

[0262] In order to solve the problems that the existing picking station operates as an independent closed system, lacks the deep coordination ability with the conveyor line, cannot dynamically adjust the operation logic based on the real-time state of the conveyor line, and overly relies on hardware devices to realize the tracking of turnover bins, the present invention proposes a control method for a simple picking station built based on a roller conveyor line. The specific solutions are as follows:

[0263] Deep coordination and dynamic adjustment:

[0264] Through initialization operations, task processing operations, and outbound control operations, deep collaboration between the picking station and the conveyor line is achieved. During the initialization phase, the tote boxes in the picking station are emptied, and the empty status is continuously detected to ensure that the picking station is ready.

[0265] In the task processing operation, the conveying path is dynamically allocated according to the task type and the real-time status of the picking positions. This means that the picking station can flexibly adjust the operation logic according to the real-time status of the conveyor line, improving the picking efficiency.

[0266] Reduce hardware dependence:

[0267] The tote box number is directly obtained through the conveyor line control system without configuring an independent barcode reader, thus reducing the dependence on hardware devices and lowering the equipment cost and maintenance complexity.

[0268] Each picking position is equipped with an independent photoelectric sensor and a confirmation button for detecting the arrival status of the tote box and triggering the outbound instruction. These devices are relatively simple and low-cost, further reducing the hardware dependence.

[0269] Improve the utilization rate of the picking station:

[0270] The dynamic allocation logic for picking positions is introduced, including the order tote task priority allocation rule and the source tote task dynamic allocation rule. When the target picking position is occupied, the picking station can flexibly allocate the tote box to the spare picking position, improving the utilization rate of the picking station.

[0271] Independent outbound instruction:

[0272] Allow the tote boxes that have completed picking to be independently output without synchronously processing the associated task boxes. This reduces the ineffective backlog of tote boxes in the picking station and improves the outbound efficiency.

[0273] Intelligent path control:

[0274] Consider the output path control of the tote box, including enabling the direct-through mode and the dynamic routing mode. When the congestion index of the conveyor line exceeds the preset threshold, the direct-through mode is forcibly started and an alarm signal is sent, which helps to avoid conveyor line congestion and optimize the logistics process.

[0275] In summary, through measures such as deep collaboration and dynamic adjustment, reducing hardware dependence, improving the utilization rate of the picking station, independent outbound instructions, and intelligent path control, the present invention effectively solves the problems existing in the existing picking station and improves the operation efficiency and flexibility of the picking station.

Claims

1. A simple picking station control method based on a roller conveyor line, characterized in that, Including: Initialization operation: Detect the emptied state of the tote boxes in the picking station, and activate the incoming tote box channel after confirmation. Task processing operation: Identify the task type of the tote box entering the incoming tote box channel, where the task type includes direct passing type and sorting and processing type; Dynamically allocate the conveying path based on the task type and the real-time picking position status, where the sorting and processing type triggers the spare picking position allocation mechanism; Outbound control operation: Generate an independent outbound instruction after the sorting and processing is completed; Control the independent output of the tote box that has completed sorting, without the need for synchronous processing related to the task box body.

2. The simple picking station control method based on a roller conveyor line according to claim 1, characterized in that Including: Initialization stage: Empty the tote boxes at all transfer machine positions and picking positions in the picking station, continuously detect the emptied state of the tote boxes until the preset emptied threshold is met, and allow the accumulation area at the incoming tote box opening to receive the tote boxes conveyed by the conveyor line; Incoming tote box scheduling stage: When the accumulation area at the incoming tote box opening detects a tote box, report the box number of the current tote box to the host computer of the picking station; The host computer issues the corresponding task type according to the box number, where the task type includes passing task and picking task; If the task type is a passing task, control the tote box to be directly output to the accumulation area at the outgoing tote box opening along the conveying path; If the task type is a picking task, execute the dynamic picking position allocation logic: When the task type is an order tote box task, sequentially determine whether the target order tote box picking position and the spare order tote box picking position are idle; if there is an idle picking position, schedule the tote box to the idle picking position and send a task target position correction instruction to the host computer; if there is no idle picking position, generate a forced outbound instruction to control the output of the tote box; When the task type is a source tote box task, sequentially determine whether the target source tote box picking position and the spare source tote box picking position are idle; if there is an idle picking position, schedule the tote box to the idle picking position and send a task target position correction instruction to the host computer; if there is no idle picking position, generate a forced outbound instruction to control the output of the tote box; Picking operation stage: When both the order tote box and the source tote box reach the corresponding picking positions, the host computer sends picking information including the goods type, quantity, and target location to the integrated machine; After manual picking is completed, trigger the confirmation button at the picking position, and the trigger signal of the confirmation button is independently reported to the host computer; The host computer generates an outbound instruction according to the received trigger signal, controls the corresponding tote box to be output from the accumulation area at the outgoing tote box opening, and feeds back the outbound completion signal to the conveyor line control system; The continuous detection of the emptied state of the tote boxes includes: Perform optoelectronic sensor scanning on the transfer machine position. If there is no signal of the presence of a tote box in three consecutive scans, it is determined that the emptying is completed; If the emptying completion condition is not met, loop through the transfer machine reset operation until the emptying threshold is satisfied.

3. The simple picking station control method based on a roller conveyor line according to claim 1, characterized in that The dynamic picking position allocation logic further includes: Order tote box task priority allocation rule: When the target order tote box picking position is occupied, it is only allowed to be allocated to 1 specified spare order tote box picking position; Source tote box task dynamic allocation rule: When the target source tote box picking position is occupied, it is allowed to be allocated to the idle position among any 3 spare source tote box picking positions.

4. The simple picking station control method based on a roller conveyor line according to claim 1, characterized in that, The outbound instructions for the tote box and the source tote box are independently triggered, including: After the source tote box completes picking, manually trigger the confirmation button at the source tote box picking position to independently generate a source tote box outbound request; After the order bin is completed with picking, the operator triggers the confirmation button for the picking position of the order bin, and an outbound request for the order bin is generated independently. The host computer asynchronously processes the outbound requests for the source bin and the order bin without waiting for the picking of the same-task bins to be completed.

5. The simple picking station control method based on a roller conveyor line according to claim 1, characterized in that The picking station includes: Six picking positions with a fixed layout, where the picking positions for order bins are distributed on both sides of the picking station, and the picking positions for source bins are distributed in the middle of the picking station; A two-way bin-in channel that supports the conveyor line flow direction from left to right or from right to left, and the picking position numbers are independent of the flow direction; Each picking position is equipped with an independent photoelectric sensor and a confirmation button, and the photoelectric sensor is used to detect the in-place status of the turnover bin.

6. The simple picking station control method based on a roller conveyor line according to claim 1, wherein The bin number of the turnover bin is directly obtained through the conveyor line control system, and the bin number is obtained by parsing the communication protocol between the conveyor line PLC and the host computer without configuring an independent barcode reader.

7. The simple picking station control method based on a roller conveyor line according to claim 1, wherein, The execution of the forced bin-out instruction includes: Marking the turnover bin not assigned to the picking position as an unprocessed status; Controlling the turnover bin to be directly output to the accumulation area at the bin-out port along a preset path; Reporting the abnormal bin-out record and the unprocessed reason of the turnover bin to the host computer.

8. The simple picking station control method based on a roller conveyor line according to claim 1, wherein The generation logic of the picking information includes: The host computer queries the database according to the bin number of the turnover bin to obtain the type, quantity of the goods to be picked, and the target order bin number; Mapping the information to the display screen of the all-in-one machine at the corresponding picking position; When the picking position assignment is corrected, the position information of the source bin / order bin displayed on the all-in-one machine is updated synchronously.

9. The simple picking station control method based on a roller conveyor line according to claim 1, characterized in that The response to the task target position correction instruction includes: After receiving the correction instruction, the host computer updates the target picking position information of the corresponding turnover bin in the task database; Sending a path adjustment instruction to the conveyor line control system to make the turnover bin move to the corrected picking position along a new path; Recording the correction operation log, including the original target position, the corrected target position, and the operation timestamp.

10. The simple picking station control method based on a roller conveyor line according to claim 1, characterized in that The output path control of the turnover bin includes: Enabling the direct-through mode for the task turnover bin and prohibiting the transfer machine from intervening in the path assignment; Enabling the dynamic routing mode for the picking task turnover bin and calculating the optimal path in real time according to the picking position assignment result; When the conveyor line congestion index exceeds the preset threshold, the direct-through mode is forcibly started and an alarm signal is sent to the host computer.

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