Material management and control method and system for drying cabinet material rack

Abstract

The invention relates to a material management and control method and system for a material rack of a drying cabinet, and a warehousing process comprises the steps: receiving material information, judging whether a material is unsealed or not, and if the material is unsealed, obtaining the time corresponding to an MSL level, the accumulated time of exposing the material outside the drying cabinet after the material is unsealed, and the first MSD shortening time of the material in the drying cabinet after the material is unsealed, calculating the current material effective time, judging whether the current material effective time is effective or not, if so, prompting that the material can be loaded to a drying cabinet material rack, otherwise, prompting to execute the baking process according to the MSD; if not, whether the material package is intact and whether the temperature card is qualified are judged, if the material package is intact and the temperature card is qualified, it is prompted that the material package can be loaded to a drying cabinet material rack, and otherwise, it is prompted that the baking process is executed according to an MSD; by applying the method provided by the invention, automatic reminding and management control of whether the material expires can be realized, the validity period loss condition caused by factors such as door opening and closing is considered, and the material deadline management and control precision is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of drying cabinet rack technology, and more specifically, to a material management method and system for drying cabinet racks. Background Technology

[0002] The drying cabinet rack consists of a drying cabinet and racks installed inside the drying cabinet, and is used to store some MSD materials that have special requirements for temperature and humidity; In traditional drying cabinets, the racks and the drying cabinet are independent of each other. The drying cabinet is only responsible for internal temperature and humidity regulation (when the internal temperature and humidity exceed the set range, it triggers intervention to bring the internal temperature and humidity back to the set range), while the racks are only used for storing MSD materials. This leads to the following drawbacks: 1. The time when MSD materials are placed in the drying cabinet and the material information need to be recorded manually, which is prone to errors and very difficult to accurately monitor each tray of materials. 2. The opening and closing of the drying cabinet door cannot be automatically detected, which leads to the inability to record humidity fluctuations caused by the opening and closing of the door, and makes it difficult to control abnormal operation of the drying cabinet; 3. The cumulative exposure time of MSD materials is difficult to calculate accurately, posing a risk that MSD materials may exceed their expiration date, and there is also a lack of corresponding alarm and reminder functions; There is a need for a material control method and system for drying cabinet racks that can effectively address the aforementioned shortcomings. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a material control method for a drying cabinet rack, and a material control system for a drying cabinet rack, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this invention to solve its technical problem is: A material control method for drying cabinet racks is constructed, wherein the method includes an inbound process, which includes: Step 1: Receive material information, which includes the material's unique code, part number, MSL level, and MSD expiration date; Step 2: Determine if the material has been opened. If yes, proceed to the next step; otherwise, proceed to Step 5. Step 3: Obtain the MSL level corresponding time T2, the cumulative time the material has been exposed outside the drying cabinet since opening T3, and the first MSD shortening time T4 after the material has been opened inside the drying cabinet. Calculate the current effective time T1 of the material based on the formula: T1 = T2 - (T3 + T4); Step 4: Determine whether the current material effective time T1 is less than or equal to the set minimum positive value delta T. If yes, proceed to step 6; otherwise, proceed to step 7. Step 5: Check if the material packaging is intact and if the temperature gauge is qualified. If the packaging is intact and the temperature gauge is qualified, proceed to Step 7; otherwise, proceed to Step 6. Step Six: Prompt to press MSD to execute the baking process and end the current process; Step 7: Indicate that the item can be placed on the drying cabinet rack.

[0005] The material control method for drying cabinet racks described in this invention, wherein the cumulative time T3 of the material exposed to the outside of the drying cabinet after opening is calculated using the following formula: T3 = T5 + T 31 +T 32 +…+T 3n ; Where T5 is the time period from the moment the material is opened to the moment it is first put into storage after being opened, T 3n This refers to the time period between the nth time the material is unpacked and the next time it is put back into the cabinet or the time when reflow soldering is completed.

[0006] The material control method for drying cabinet racks described in this invention, wherein the first MSD shortening time T4 of the material after opening in the drying cabinet is calculated using the following formula: T4 = T 41 +T 42 +…+T 4n ; Among them, T 4n The nth time period after the material is opened and placed in the dryer, when the temperature and humidity inside the dryer fluctuate due to opening the door to retrieve the material and / or abnormalities in the dryer, causing the temperature and humidity to fail to meet the temperature and humidity requirements corresponding to the material's MSL level.

[0007] The material control method for drying cabinet racks described in this invention, wherein: The material is received into the warehouse at the moment the sensor on the shelf detects that the material has been placed on the shelf. The material is retrieved when the door is opened and the material is removed from the rack by the sensor.

[0008] The material control method for drying cabinet racks according to the present invention further includes an outbound process, which includes: Based on the material issuance request in the production work order, the indicator lights on the materials on the drying cabinet rack are turned on; After receiving the material removal information from the drying cabinet rack, record and update the time when the material leaves the drying cabinet rack, and calculate the outbound exposure time of the current outbound operation; Determine whether the current material has completed reflow soldering within the MSD validity period. If so, determine that the material's MSD moisture sensitivity risk management has ended and end the current process; otherwise, proceed to the next step. If the current material has been mounted but has not yet passed through the reflow oven, it should be handled according to the material user's specific control rules; otherwise, please follow the baking process according to the MSD level requirements.

[0009] The material control method for drying cabinet racks described in this invention requires scanning the unique code of the drying cabinet rack when loading and unloading materials to confirm whether the current rack is correct and whether the drying cabinet is in normal condition.

[0010] The material control method for a drying cabinet rack according to the present invention further includes: By setting a minimum lifespan threshold for materials using the drying cabinet racks, the system can freeze the materials or issue an early warning based on the material's lifespan threshold.

[0011] The material control method for drying cabinet racks of the present invention further includes: automatically detecting door opening and closing based on temperature and humidity changes, and performing a countdown after each door opening; if a door closing action is not detected within a set time, triggering the rack to issue a reminder or alarm.

[0012] The material control method for drying cabinet racks according to the present invention, wherein the automatic detection of door opening and closing based on temperature and humidity changes includes: When there is work, the automatic determination of the material cabinet door closing is based on the following: if the temperature and humidity module monitors that the temperature and humidity drop within X seconds, starting from Delta Y value and continuing to drop until Y1 value, then the material cabinet door is considered closed and recorded as closed. When there is work to be done, the material cabinet door will be automatically opened; if the temperature and humidity module monitors that the temperature and humidity rises to Delta Z value within X seconds and continues to rise until Z1 value, it will be considered that the material cabinet door is open and recorded as open state.

[0013] A material control system for a drying cabinet rack, wherein the system includes: a drying cabinet, a rack, and a system host, the rack being located inside the drying cabinet; The drying cabinet is equipped with a temperature and humidity control and monitoring unit, and the material rack is equipped with a reminder unit and multiple storage positions. Each storage position is equipped with a material sensor. The system host is used to receive material information from the temperature and humidity control and monitoring unit, the material sensor, and external input, control the operation of the reminder unit, and execute the material management method for the drying cabinet rack as described above.

[0014] The beneficial effects of this invention are as follows: By applying the method of this application, the drying cabinet and the material rack are systematically integrated to automatically record the time when materials are put into and taken out of the drying cabinet, and to distinguish between opened and unopened (the shelf life of materials can change drastically). It can realize automatic reminders and management control of whether materials have expired, and takes into account the loss of shelf life caused by factors such as opening and closing the door. Materials with different humidity requirements can be stored in the material rack at the same time, and the shelf life of each tray of materials can be controlled with high precision, reducing the uncertainty caused by human factors and reducing labor costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a warehousing flowchart of a preferred embodiment of the material control method for drying cabinet racks of the present invention; Figure 2 This is a detailed flowchart of the material control method for drying cabinet racks according to a preferred embodiment of the present invention. Figure 3 This is an outbound flow chart of a material control method for a drying cabinet rack according to a preferred embodiment of the present invention; Figure 4 This is a flowchart detailing the outbound process of a material control method for a drying cabinet rack according to a preferred embodiment of the present invention. Figure 5 This is a schematic diagram of a material control system for a drying cabinet rack, which is a preferred embodiment of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0017] A preferred embodiment of the material control method for drying cabinet racks of the present invention, such as... Figure 1 As shown, see also Figures 2-4 This includes the warehousing process, which includes: S01: Receive material information, which includes the material's unique code, part number, MSL level, and MSD expiration date; S02: Determine if the material has been opened. If yes, proceed to the next step; otherwise, proceed to step five. S03: Obtain the MSL level corresponding time T2, the cumulative time the material has been exposed outside the drying cabinet since opening T3, and the first MSD shortening time T4 after the material has been opened inside the drying cabinet. Calculate the current effective time T1 of the material based on the formula. T1 = T2 - (T3 + T4); The cumulative time T3 of the material exposed to the drying cabinet after opening is calculated using the following formula: T3 = T5 + T 31 +T 32 +…+T 3n ; Where T5 is the time period from the moment the material is opened to the moment it is first put into storage after being opened, T 3n The time period between the nth time the material is unpacked and the next time it is put back into the cabinet or the time when reflow soldering is completed; The first MSD reduction time T4 of the material in the drying cabinet after opening is calculated using the following formula: T4 = T 41 +T 42 +…+T 4n ; Among them, T 4n The nth time period after the material is opened and placed in the cabinet, when the temperature and humidity inside the drying cabinet fluctuate due to the opening of the door to retrieve the material and / or abnormalities in the drying cabinet, causing the temperature and humidity to fail to meet the temperature and humidity requirements corresponding to the material's MSL level. S04: Determine whether the current material effective time T1 is less than or equal to the set minimum positive value delta T. If yes, proceed to step six; otherwise, proceed to step seven. S05: Determine whether the material packaging is intact and whether the temperature gauge is qualified. If the packaging is intact and the temperature gauge is qualified, proceed to step seven; otherwise, proceed to step six. S06: Prompt to press MSD to execute the baking process and end the current process; S07: Indicates that the material can be placed on the drying cabinet rack; See Figure 3 and Figure 4 The method also includes the outbound process, which includes: S11: Based on the material issuance request of the production work order, light up the materials on the drying cabinet rack; S12: After receiving the material removal information from the drying cabinet rack, record and update the time when the material leaves the drying cabinet rack, and calculate the outbound exposure time of the current outbound operation; S13: Determine whether the current material has completed reflow soldering within the MSD validity period. If yes, determine that the material's MSD moisture sensitivity risk management has ended and end the current process; otherwise, proceed to the next step. S14: If the current material has been mounted but has not yet passed through the reflow oven, it shall be handled in accordance with the material user's corresponding special control rules; otherwise, please follow the baking process according to the MSD level requirements. Specifically, the advantages of the drying cabinet rack in this application include: 1. It enables precise control over each tray of materials; 2. The system automatically records the time when materials are placed into and removed from the drying cabinet; 3. It can achieve multiple levels of temperature and humidity control, that is, one drying cabinet rack can store multiple materials with different temperature and humidity levels (such as 5%, 10%). 4. Automatic door opening and closing detection is enabled; an alarm will sound if the door is not closed in time. Method 1: Monitoring temperature and humidity changes; Method 2: Monitoring the loading and unloading of material trays. 5. The drying cabinet's material rack can be programmed to illuminate the appropriate material tray location lights to guide the operator to quickly find the required material tray, improving material retrieval efficiency, greatly reducing the time spent opening the drying cabinet to find materials, and thus extending the lifespan of the materials. 6. The drying cabinet rack can be set with a minimum lifespan threshold (remaining effective time warning threshold). Based on the material's threshold lifespan, the material can be frozen (minimum threshold disables it); or a warning can be given in advance to dry it earlier for convenient use. 7. It can automatically calculate the lifespan of materials in the workshop; 8. Facilitates the control and management of abnormal operation of the drying cabinet; In a preferred embodiment, the material shelving process can be as follows: Put the PDA (scanning dock) into loading mode -> Select the PDA loading task -> The PDA successfully scans the material cabinet barcode -> The PDA displays the empty storage space and specification information of the material cabinet, and the current status of the material cabinet. If the status is normal and loading is possible, the tower light is in loading mode, and the material cabinet voice announces "Binding successful, please open the door" -> Manually open the door. The material cabinet's door opening status is automatically detected as successful, and the material cabinet voice announces "Door opening successful". The tower light enters racking mode -> The PDA scans the material tray barcode to confirm if the material tray specifications match. If they match, the material is racked, and the PDA voice announces "Please rack"; if they do not match, a reminder is given, and the operation is initiated. Staff decide whether to put items on the shelves; the system records mismatches. Successful or abnormal shelving is managed according to warehouse-style shelving logic. If the number and specifications of storage locations are sufficient, the PDA scans the pallet barcode N times for shelving. If the number of storage locations is insufficient, shelving automatically ends, and the cabinet announces "Insufficient storage locations." If the specifications are insufficient, an automatic voice prompt "Insufficient specifications" is given. Once shelving is successful, the PDA exits shelving mode, and the cabinet announces "Shelving complete, please close the door." Manual door closing is required. After the cabinet automatically detects successful door closure, it announces "Door closed successfully," and the tower light returns to normal. In a preferred embodiment, the material removal process can be as follows: Enter material dispensing mode on the PDA -> Select material dispensing task on the PDA -> Successfully scan the material cabinet barcode on the PDA -> The PDA displays the empty storage space and specification information of the material cabinet, and the current status of the material cabinet. If the status is normal and material dispensing is possible, the material cabinet will announce "Binding successful, please open the door" -> Manually open the material cabinet door. The door opening status will be automatically detected successfully, and the material cabinet will announce "Door opened". The tower light will enter material dispensing mode -> Refer to the material rack storage space lights and the PDA storage space display. If material is retrieved normally, it will be removed if there is an error. When materials are retrieved, the material cabinet announces "Illegal material retrieval" via voice. The storage location indicator lights up, and the PDA navigation displays the storage location. M material trays are retrieved and removed from the shelf. If the last tray has been retrieved, the system automatically ends the shelving process, and the material cabinet announces "Material retrieval complete." Retrieval is complete, the PDA exits the material retrieval state, and the material cabinet announces "Material retrieval complete, please close the door." The door is manually closed. The automatic detection of the closed door status is successful, and the material cabinet announces "Door closed successfully." The tower lights return to normal operation.

[0018] The management of the status of the storage bins in this application can be achieved through the following aspects: 1. Status management of racks in the material cabinet (refer to existing publicly available rack management methods; no specific restrictions are imposed). 2. Management of temperature and humidity settings in the material storage cabinet; Specifically, it includes: Temperature and humidity control limit settings and allowable error values ​​(the system automatically enters the settings, and the temperature and humidity dial is manually set). Allowable deviation of temperature and humidity operating cycle (Delta Time); Effective calibration cycle values ​​for temperature and humidity; Remaining validity period of temperature and humidity calibration; Temperature and humidity decrease values ​​Delta Y; Temperature and humidity decrease value Y1; Temperature and humidity increase, Delta Z; Temperature and humidity increase Z1; Closing time Delta Off; 3. The material storage cabinet uses temperature and humidity changes to automatically detect when the door opens and closes; When there is work to be done, the material cabinet door will be automatically closed; if the temperature and humidity module monitors (after X seconds, the temperature and humidity drop from Delta Y value, and continue to drop until Y1 value), then the material cabinet door will be considered closed and recorded as closed. When there is work to be done, the material cabinet door will be automatically detected to be open; if the temperature and humidity module monitors (after X seconds, the temperature and humidity rises to the Delta Z value and continues to rise until the Z1 value is reached), it will be considered that the material cabinet door is open and recorded as open. 4. Management of abnormal conditions in material storage containers; Abnormality types: rack malfunction, temperature and humidity module malfunction, door opening malfunction, door closing malfunction, operation timeout; If the shelving is abnormal, manage it according to the standard warehouse shelving abnormality management procedures. When the temperature and humidity modules detect an abnormality, the material cabinet will announce "Temperature and humidity modules are abnormal" via voice broadcast, the tower light will turn red, and the abnormality will be recorded in the log. When there is no operation, if the material cabinet is not scanned, and the temperature and humidity monitoring values ​​exceed the set allowable error values, the material cabinet will announce "Door opening abnormal, please close the door", the tower light will turn red, and the abnormality will be recorded in the log. When there is work, if the time between the change of the last storage position of the material cabinet and the automatic door closing detection time exceeds Delta Off, the material cabinet will announce "Door closing abnormal, please close the door" and record it in the log. When a task is in progress, once the material cabinet code is successfully scanned, the temperature and humidity monitoring timer for the material cabinet door begins to record until a change in the loading or unloading position (including any abnormalities) is detected. This timer is recorded as the opening time of the first tray (time 1). If time 1 exceeds the allowed DeltaTime setting, the material cabinet will announce "Task timed out, please close the door," and the tower light will turn red. The error will be recorded in the error log. For tasks from the second to the nth tray, the timer for temperature and humidity monitoring starts from the change in the loading or unloading position of the first tray and continues until the change in the next position. This timer is recorded as the opening time from the second tray (time 2) to the nth tray (time n). If time 2 or time n exceeds the DeltaTime setting, the material cabinet will announce "Task timed out, please close the door," and the tower light will turn red-pink. The error will be recorded in the error log. A material control system for drying cabinet racks, such as Figure 5 As shown, the system includes: a drying cabinet 10, a material rack 11, and a system host 12. The material rack 11 is located inside the drying cabinet 10. The system host 12 can be set up separately or can be set on the drying cabinet 10 or the material rack 11. The drying cabinet 10 is equipped with a temperature and humidity control and monitoring unit 100, and the material rack 11 is equipped with an reminder unit 110 and multiple storage positions 111. Each storage position 111 is equipped with a material sensor 112. The system host 12 is used to receive material information input from the temperature and humidity control and monitoring unit 100, the material sensor 112 and external sources (such as various barcode scanning devices or keyboard input / output devices), control the operation of the reminder unit 110 (which can be manifested as various reminder forms such as light, voice and combination of various forms), and execute the material management method for the drying cabinet rack as described above. The system applied in this application integrates the drying cabinet and the material rack to automatically record the time when materials are put into and taken out of the drying cabinet. It distinguishes between opened and unopened materials (the shelf life of materials can change drastically), enabling automatic reminders and management control of whether materials have expired. It also takes into account the loss of shelf life caused by factors such as opening and closing the door, significantly improving the accuracy of material expiration control, reducing the uncertainty caused by human factors, and lowering labor costs.

[0019] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A material control method for a drying cabinet rack, characterized in that, The method includes the inbound process, which includes: Step 1: Receive material information, which includes the material's unique code, part number, MSL level, and MSD expiration date; Step 2: Determine if the material has been opened. If yes, proceed to the next step; otherwise, proceed to Step 5. Step 3: Obtain the MSL level corresponding time T2, the cumulative time the material has been exposed outside the drying cabinet since opening T3, and the first MSD shortening time T4 after the material has been opened inside the drying cabinet. Calculate the current effective time T1 of the material based on the formula: T1 = T2 - (T3 + T4); Step 4: Determine whether the current material effective time T1 is less than or equal to the set minimum positive value Delta T. If yes, proceed to Step 6; otherwise, proceed to Step 7. Step 5: Check if the material packaging is intact and if the temperature gauge is qualified. If the packaging is intact and the temperature gauge is qualified, proceed to Step 7; otherwise, proceed to Step 6. Step Six: Prompt to press MSD to execute the baking process and end the current process; Step 7: Indicate that the item can be placed on the drying cabinet rack.

2. The material control method for drying cabinet racks according to claim 1, characterized in that, The cumulative time T3 of the material exposed to the drying cabinet after opening is calculated using the following formula: T3= T5+T 31 +T 32 +…+T 3n ; Where T5 is the time period from the time the material is opened to the time of its first entry into the warehouse after opening, T 3n This refers to the time period between the nth time the material is unpacked and the next time it is put back into the cabinet or the time when reflow soldering is completed.

3. The material control method for drying cabinet racks according to claim 1, characterized in that, The first MSD reduction time T4 of the material after opening in the drying cabinet is calculated using the following formula: T4= T 41 +T 42 +…+T 4n ; Among them, T 4n The nth time period after the material is opened and placed in the dryer, when the temperature and humidity inside the dryer fluctuate due to opening the door to retrieve the material and / or abnormalities in the dryer, causing the temperature and humidity to fail to meet the temperature and humidity requirements corresponding to the material's MSL level.

4. The material control method for a drying cabinet rack according to any one of claims 1-3, characterized in that: The material is received into the warehouse at the moment the sensor on the shelf detects that the material has been placed on the shelf. The material is retrieved when the door is opened and the material is removed from the rack by the sensor.

5. The material control method for a drying cabinet rack according to any one of claims 1-3, characterized in that, The method also includes the outbound process, which includes: Based on the material issuance request in the production work order, the indicator lights on the materials on the drying cabinet rack are turned on; After receiving the material removal information from the drying cabinet rack, record and update the time when the material leaves the drying cabinet rack, and calculate the outbound exposure time of the current outbound operation; Determine whether the current material has completed reflow soldering within the MSD validity period. If so, determine that the material's MSD moisture sensitivity risk management has ended and end the current process; otherwise, proceed to the next step. If the current material has been mounted but has not yet passed through the reflow oven, it should be handled according to the material user's specific control rules; otherwise, please follow the baking process according to the MSD level requirements.

6. The material control method for a drying cabinet rack according to claim 5, characterized in that, When loading and unloading materials, the unique code of the drying cabinet rack must be scanned to confirm whether the current rack is correct and whether the drying cabinet is in normal condition.

7. The material control method for a drying cabinet rack according to claim 1, characterized in that, The method further includes: By setting a minimum lifespan threshold for materials using the drying cabinet racks, the system can freeze the materials or issue an early warning based on the material's lifespan threshold.

8. The material control method for a drying cabinet rack according to claim 1, characterized in that, The method also includes: automatically detecting door opening and closing based on temperature and humidity changes, and performing a countdown after each door opening. If a closing action is not detected within the set time, the material rack is triggered to issue a reminder or alarm.

9. The material control method for a drying cabinet rack according to claim 8, characterized in that, The automatic door opening and closing detection based on temperature and humidity changes includes: When there is work, the automatic determination of the material cabinet door closing is based on the following: if the temperature and humidity module monitors that the temperature and humidity drop within X seconds, starting from Delta Y value and continuing to drop until Y1 value, then the material cabinet door is considered closed and recorded as closed. When there is work to be done, the material cabinet door will be automatically opened; if the temperature and humidity module monitors that the temperature and humidity rises to DeltaZ value within X seconds and continues to rise until Z1 value, it will be considered that the material cabinet door is open and recorded as open.

10. A material control system for a drying cabinet rack, characterized in that, The system includes: a drying cabinet, a material rack, and a system host, wherein the material rack is located inside the drying cabinet; The drying cabinet is equipped with a temperature and humidity control and monitoring unit, and the material rack is equipped with a reminder unit and multiple storage positions. Each storage position is equipped with a material sensor. The system host is used to receive material information from the temperature and humidity control and monitoring unit, the material sensor, and external input, control the operation of the reminder unit, and execute the material management method for the drying cabinet rack as described in any one of claims 1-9.

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