KR20140057753A - Production management system of surface mounted tfchnology - Google Patents

Abstract

The present invention relates to a surface mounting technology (SMT) production management system and, more specifically, to an SMT production management system which can manage production plan and history more efficiently, and can prevent wrong insertion of components by verifying and checking wrong insertion before production, and can prevent large scale faults in advance by blocking PCB insertion and stopping a production line if a fault occurs. The present invention can reduce time loss and costs loss greatly and can improve productivity highly, by performing optimal verification of wrong insertion by generating a mount NC file using a BOM file and a CAD file and then applying the mount NC file in a mount equipment, and minimizing manual labor through a comparison function of BOM and BOM, CAD and CAD.

Description

PRODUCTION MANAGEMENT SYSTEM OF SURFACE MOUNTED TFCHNOLOGY

The present invention relates to a SMT (Surface Mounting Technology) production management system. More particularly, the present invention relates to a system and method for managing production planning and history more efficiently, If abnormalities occur, the PCB input is blocked and the production line is stopped to prevent large defects in advance.

In general, Surface Mounting Technology is a device that automatically executes assembly of electronic devices, and mounts semiconductor, diode, chip, etc. on a printed circuit board (PCB) with a plurality of equipment, and hardens them Technology.

In the SMT (Surface Mounting Technology) or SMD (Surface Mounting Device) line, a user creates a production program through a bill of materials (BOM) or a machine MMI (Man Machine Interface). That is, CAD (a basic circuit diagram for PCB's PTN wiring) file and BOM (bill of materials) file are separately created and mounted on a mount device. If the production program is not satisfied, Modify some or all of them to create a new production program through program (or file) or equipment MMI. The equipment MMI is an interface for inputting a production program to an individual equipment.

However, in the process of creating a new production program, the difference in the efficiency of the program produced according to the level of the user is severe, and when the user is not skilled or skilled in the SMT field, There is a problem that the program with lowered efficiency is created and the production program information is continuously changed according to the different tendencies of the users. In other words, it takes a long time to write a production program, which leads to a problem that productivity is lowered.

FIG. 1 illustrates an example of a mis-verification system for preventing component mis-insertion in the conventional SMT. A CAD file and a BOM file are separately created and mounted on a mount device. In the case of mis- And the part number (Part No.) entered in the BOM file is re-registered by manual or specified form to be used for the mis-verification, and the feeder number and the reel part number are scanned several times In addition to the time loss and the cost loss, it is impossible to verify the error by mistakenly inputting the feeder number by mistake of the operator.

As described above, there are various problems such as the failure to verify and check the mis-pre-production before production or the production line to be continuously operated when the number of defects is insufficient, and the PCB is continuously put into operation to cause large defects.

Korean Registered Patent No. 10-1108121 (2012. 01. 31. Announcement) "Process control method for parts production" Korean Unexamined Patent Publication No. 1997-0029153 (published on June 26, 1997)

An object of the present invention is to provide an SMT production management system.

Another object of the present invention is to directly generate a mount NC file by using a BOM file and a CAD file and to apply it to a mount device and to perform an optimal mis-inspection by minimizing the manual work of a worker by comparing BOM & BOM, CAD & CAD It is characterized in that it provides a SMT production management system which greatly reduces time loss and cost loss and greatly improves productivity.

Another object of the present invention is to verify the misassembly before production and, if an abnormality occurs, stop the production line and block the PCB input, thereby preventing a large scale defect in advance.

The SMT production management system of the present invention includes a production planning and a history management step, a step of verifying and uploading / downloading an NC file, a step of verifying an error, a step of uploading / downloading SMT equipment, PCB input blocking step.

The mis-verification is performed by separately creating a CAD file and a BOM file, generating a mount NC file based on the CAD file and the BOM file, uploading the mount NC file to a server, A step of copying the file automatically or manually, a step of changing the model or proceeding with production, a step of uploading the mount NC file to the server (Up Load), a feeder list based on the mount file A step of scanning a model name of a work instruction, a step of scanning a feeder, a step of automatically ending the process if there is no abnormality in the step of scanning the feeder, And if there is an abnormality in the part, it is re-confirmed and the part is scanned after the problem is solved.

Intercepting and disassembling the PCB, exchanging materials and sequential inspections, examining the scan to determine whether there is an abnormality; A step of performing production if there is no abnormality in the scan inspection step; and a step of outputting and displaying a monitoring signal to a monitor installed in the field when an error occurs one time in the scan inspection step, If the error occurs due to the error in the scan again, the monitoring signal is outputted and displayed on the monitor installed on the field. If there is no abnormality, the production line will be operated normally and the PCB will be put in. In this stage, production will be resumed by PCB input.

The present invention is capable of verifying and checking mis-assemblies before production, preventing mis-assembling of parts, and blocking PCB input and stopping the production line when an abnormality occurs, thereby preventing large-scale defects in advance.

The present invention is not only superior in inventory management, material management and current high-level management by grasping field performance and production performance, but also has the effect of preventing further quality defects by managing business loss.

Since the mount NC file is directly generated using the BOM file and the CAD file and applied to the equipment, the part number (material number), the circuit number (coordinate), and the CAD angle (coordinate) There is an effect that can be corrected in the equipment.

In the present invention, all of the parts supply feeders of an existing company are registered, and a mount file is created, stored and registered in the server, and read out and used immediately. When the mount file is updated on the server, the existing model is automatically compared and judged. (NG) and displays the difference on the screen and / or printout, so that confirmation and action are quick, and it is possible to store the history in the database and manage the history.

The present invention can confirm the accurate use history by preventing the loss of materials by attaching the management barcode to all the materials to be received and scanning all the materials at the time of inputting and outputting and analyzing the log data of the surface mounting equipment, It is possible to judge the state and to monitor the unrecorded material through scanning to prevent the misplacement.

The present invention has the effect of collecting real-time data of input / output data and material status of a production line in real-time using a real-time integrated material management program, thereby confirming production history and accurate use history of materials. Can be grasped in real time by time, and it is possible to judge whether a material is supplied according to the production plan.

According to the present invention, by analyzing a file for each mount, the part number of a file to be actually produced and the feeder can be verified by using the final production file as the reference, , BOM & BOM, CAD & CAD. This is a very useful invention that has the effect of minimizing the manual work of the operator and greatly reducing the time loss, cost loss, productivity, etc.

Figure 1: Conventional SMT mis-verification flow chart.
Figure 2: SMT production plan and history management flowchart shown as an example of the present invention.
Figure 3: NC file verification and upload / download flowchart shown as an example of the present invention.
4 is a flow chart of the SMT mis-verification shown as one example of the present invention.
5: One example of the present invention
Figure 5: SMT equipment upload / download and verification process as one example of the present invention.
6 is a block diagram of a PCB disconnection and disconnection shown in an embodiment of the present invention.
7 is a block diagram of a PCB disconnection and disconnection according to another embodiment of the present invention.
8 is a block diagram of a PCB disconnection and disconnection according to another embodiment of the present invention.
Fig. 9: Diagram of the production line shown as an example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention, the same components as in the drawings are denoted by the same reference numerals as possible, and detailed descriptions of known configurations and functions are omitted so as not to obscure the gist of the present invention.

In the present invention, the production planning history management step, the NC file verification and upload / download step, the subsequent misapplication verification step, the SMT equipment upload / download and verification step, and the SMT production line construction and PCB input blocking step.

FIG. 2 is a flowchart of an SMT production plan and a history management as an example of the present invention.

The program team (P / G team) creates the mount NC, checks and checks the preparation status, confirms the required materials of the model, checks the stencil Stencil and Memory teams will check the materials and stencils and produce them.

When the production plan is changed after the production plan is established, the program manager (P / G team) outputs a change message and a message to the supervisor or the designated person's computer (5) The material team confirms the required materials of the model, and the stencil and the memory team check the materials and the stencil to check the production.

The production plan establishment establishes a production product model for each production line. In other words, when the model is changed or the payment model is compared after comparing the date of the existing plan and the production line, a message is automatically outputted to the relevant department computers in the company.

The program team (P / G) can check whether the corresponding production line has been properly programmed in the master NC file after confirming the model number in the production plan. If program preparation is checked, the NC file is programmed By uploading the programmed NC file to the server load (Up Load) by checking only the model that is not checked ready by performing history management by uploading to the corresponding production line of the server (server) do.

After confirming the production plan as same as the program team, the material team clicks (double-clicks) the model and outputs the required material list (list), and then checks whether the material is normally stored. If there is no problem, If the material is in question or has no inventory, "No" in the corresponding material on the list, or mark the problem and mark the action

The stencil and the memory team click on the stencil and the memory portion of the production plan in the same manner as the material team to check whether the stencil and the memory copy are completed, If there is a problem with the material, indicate the problem and mark the action.

Once the information checked once is maintained in the order of production plan or production line of the same day, it is necessary to confirm that only the NC file of the program is programmed when the production line is changed.

FIG. 3 shows an NC file verification and uploading / downloading process as an example of the SMT system according to the present invention, in which a production plan for each production line is established (step S1); Inquiring the production history of the NC file (step S2); Generating a program (P / G) of the mount equipment (step S3); Uploading (Up Load) the NC file to the file server (step S4); A step in which the system waits and sets a model (step S5); Preparing a model in a waiting state for each equipment by production line (S6); Closing the feeder to the equipment after changing the model (S7); Scanning and verifying the feeder fastened to the equipment by bar code (step S8); If there is no abnormality, the production is proceeded (step S9); .

The NC file is automatically downloaded down load (FTP) between the step of inquiring the production history of the NC file (step S2) and the step of generating the program (P / G) of the mount equipment (step S3) (Step S10); And comparing and verifying the downloaded NC file (step S11).

Between the step S6 of preparing the model in the standby state for each equipment for each production line and the step S7 for concluding the feeder to the equipment after the model is changed, (Step S12).

In the above, materials to be prepared in a feeder can be easily verified by a bar code by comparing a predetermined or specified part number with a model to be prepared and bar-coded, OK "if it is actually required, and" NG "if it is not used, and" OK "if it is not necessary, and scan the model bar code with the scanner (Scanner) Prepare.

The bar code scanning device may be a wired / wireless scanner, a PDA, a smart phone, a tablet PC, or the like.

And, when the verification is completed with the bar code, the advance preparation stores and utilizes the corresponding scan history in the database. That is, it is possible to read out and use the database when a real feeder is connected to a mount device and then verified again. And whether or not the preparation has been completed.

In the present invention, the SMT equipment (3) NC file up / down is arbitrarily designated as a unique model to be used by the FTP method and is automatically up / down. At this time, In contrast, if there is a wrong part, it is configured so that it is not automatically down in the next production. If the wrong part is confirmed and processed or corrected normally, it can be down.

In the present invention, the method of verifying after mounting on the mount (SMT) equipment 3 is to compare the unique part number (Part No.) of a previously designated material with a model name to be produced by bar coding, The scan will scan the separately specified part number or the part number of the vendor of the material supplier and scan the Lot ID to determine which lot of which material of the next model to use The history can be managed and utilized.

In the case of the mis-verification of the SMT system, as described above, the BOM file is copied and the part number (Part No.) entered in the BOM file is re-registered manually or in a designated form, ) Number and Reel Part number is scanned several times to verify the error. Therefore, not only the time loss and the cost loss are large, but also the operator mistakes the feeder number There is a problem that the mistaken input of the file is impossible. However, in the present invention, by analyzing the file for each mount, the part number of the actually produced file and the feeder are separated from each other It is possible to perform the verification by mistake on the basis of the final production file without registering. Also, by comparing the function of BOM & BOM, CAD & CAD, it is possible to minimize the manual work by the operator, Because not scan, greatly reducing the holding time loss and loss expenses, and significantly improve productivity.

FIG. 4 illustrates a mis-verification system for preventing component mis-insertion in the SMT system according to the present invention, in which a CAD file is generated (step S20) and a BOM file is generated (step S21); Generating a mount NC file based on the CAD file and the BOM file (S22); Uploading the mounted NC file to the server (Up Load) (step S23); A step of automatically or manually copying the mount file (step S24); Changing the model or proceeding with production (step S25); (Step S26) of outputting a feeder list based on the mount file in the step of uploading (Up-Load) the mount NC file to the server (step S23); A step of scanning the model name of the work instruction (step S27); A step of scanning a feeder (step S28); If there is no abnormality in the feeder scanning step (S1 step), the step ends automatically after completion (step S29); If there is an abnormality in the feeder scanning step (S28), the part is reconfirmed and the problem is resolved and then rescanned (S30); A step of automatically ending the re-scan after the problem solving is completed (step S29); .

FIG. 5 is a view showing a process team (P / G team), a production team, and a facility team according to an SMT equipment upload / download and verification process.

First, the program team (P / G team) confirms the product model and / or the line production plan (S31), downloads the BOM data and CAD data (S32), and edits the application program (A / P operation) (Step S33) and stores it in the computer in charge (step S34). The program is created using a CM (release mount) / SM (regular mount) / CP equipment (step S35) (Step S36).

Then, the production team confirms the product model and / or the production plan (step S37), changes the model for each production line (step S38), and transmits the assy program, for example, the program file of the MV / (Step S41). The NC file is divided on the basis of the LOB and stored in the computer (PC) (step S40), and the PCB data, such as coordinate, angle and feeder, (Step S42) and ends production (step S43).

The NC file is divided and stored in the computer (PC) in step S40. At the same time, the NC file is transferred to the server using FTP and stored in the computer (step S44) The data is also transferred to the server using FTP and stored (S44).

The BOM data and the CAD data are downloaded (step S32), edited (step S33) and stored (step S34), NC file and version file are created (step S48) (Step S49), and downloads an Assy program stored in the server, for example, a program file of the MV / HDP device (Step S50) (Step S41), teaching the coordinates, angle and feeder data of the PCB (S41), producing (RUN) (S42) and ending production (S43).

The NC file and the Vision file are created in step S48 and stored in the Vision computer in step S49 and then transferred to the server using FTP to store the NC file and the Vision file in step S44. At the same time, the program in operation is changed and the program in operation (before change) is transmitted to the server, uploaded and stored, and then deleted (S32), and the updated file and / or program is updated .

On the other hand, the data transferred and stored in the server (step S44) is verified by the verification program (step S45). Accurate verification is performed by integrated verification of program files for each equipment and precise verification based on existing feeder standards. Precise verification of redundant data, additional data, deletion data, circuit data, and coordinate data for each equipment is performed. Assy is used for program verification (step S46), and if no verification error occurs in the program verification step (step S46) (No NG), upload to the server using FTP (Up Load) and store (Step S36). When a verification error occurs, program error contents and problems are found and corrected, the program is reworked (step S47) and edited (step S33) and completed and stored in the computer of the user (step S34).

FIG. 6 is a block diagram illustrating a PCB disconnection and a disassembly flowchart according to an embodiment of the present invention. In the step S60, material exchange and sequential inspection (original inspection) are performed. A step of checking whether there is an abnormality by performing a scan (step S61); If there is no abnormality in the scan inspection step (S61), the production is proceeded (S62); In the scan inspection step (S61), when a single error occurs, the monitoring signal is outputted and displayed on the monitor installed in the field (S63); If an error occurs one time, the production line is stopped to block the PCB input (S64); And then the management supervisor confirms (step S65); Then, a scan inspection is performed again (S66); If an error occurs due to the abnormality in the scan again, the monitoring signal is outputted and displayed on the monitor installed in the field (step S63), and the production line is stopped and the PCB insertion is interrupted (S64). If there is no abnormality, The PCB is inserted (step S67); The production is resumed by the PCB input (step S62); .

In the above case, when a single consecutive error (NG) occurs in the same part, the PCB is automatically cut off and the production is stopped. At the same time, the alarm is set up on the field, and the content of the defect is displayed on the monitor The management supervisor can quickly confirm and respond (measure), and when the error is resolved after re-inspecting, the production line and production are resumed as the PCB interruption is released.

In the above, it is preferable to allow the management supervisor to grant an access right or a password to scan and re-scan.

FIG. 7 is a flow chart of a circuit breaker and disconnection of a PCB according to another embodiment of the present invention. In FIG. 7, the model information, the production line, and the user information are scanned using a barcode reader or a barcode reader. Block production lines, prevent massive failures, and save time and money.

First, a step of registering in the mount program server (step S70), a step of downloading the mount program (step S71), a step of changing the mount model (step S72), a change of the line computer model (step S73) (Step S75) of inserting a material feeder mount, step S76 of scanning and inputting a model information bar code, scanning and inputting a production line and equipment user information, (Step S77), a step of starting feeder inspection (S78), a maker part number or a scan of a self bar code (step S79) ) If there is no abnormality in the step of scanning the part number (Maker Part No.) or the own bar code (S79), the feeder is sequentially scanned until the end (S80) and the production is proceeded (S81) , Maker (maker) part number (Maker Pa (step S82) when an error has occurred in the step of scanning the own bar code (step S79) or the error bar code is transmitted to the database server (step S82) (Step S83) of checking the cause of the trouble feeder (step S84), and the supervisor inputs the password (P / W) to access the PLC, (Step S85), the maker part number or the own bar code is scanned (step S99), and if there is no abnormality, the feeder is sequentially scanned until the end of the feeder (Step S80), and the production is proceeded (step S85).

FIG. 8 is a block diagram of a circuit breaker and disassembly of PCBs according to another embodiment of the present invention. In FIG. 8, PDA is used to scan model information, production line and user information, , Thereby reducing time and cost.

That is, step S90 of registering with the mount program server, step S91 of lowering the mount program, step S92 of changing the mount model, outputting the work instruction sheet (step S93) (Step S94), a step of connecting the material feeder mount (step S95), a step of scanning and inputting the model information bar code (step S96), a step of scanning and inputting the production line and equipment user information (Step S97), a step of starting feeder inspection (step S98), a step of scanning maker part number (Maker Part No.) or self bar code (step S99) If there is no abnormality in the step of scanning the part number (Maker Part No.) or the own bar code (S99), the feeder is sequentially scanned until the end (S100) and the production is proceeded (S101) Make part number (maker part number) or A step of transmitting an error content to a database server when an error occurs in the step of scanning the own bar code (S99) (step S102); outputting a PCB blocking signal to the PLC connected to the production line computer, (Step S104) of checking the cause of the trouble feeder (step S104), and the management supervisor inputs the password (P / W) to access the PLC and then releases the PCB input blocking state (Step S105). If there is no abnormality through the make part number (Maker Part No.) or the own bar code is scanned (step S99), the feeder is sequentially scanned to the end (step S100) (Step S101).

The present invention can check production goods receipt for each model, so that more efficient production, production planning and history management can be achieved, and history tracking and history management can be performed.

The present invention can compare the existing data with the current data and judge whether there is any abnormality, so that it can prevent the mass defect in advance, which can greatly reduce the time loss and the cost loss and stop the production line. .

In the present invention, the difference between the existing production history and the current production history can be confirmed, and the problems can be compared and processed. In addition, time and cost loss can be greatly reduced by comparing and managing existing BOM and new BOM.

Since the present invention can grasp the field performance and the production performance, it is excellent in the inventory management and the material management and the current high management, and it can be scanned and verified before the production, so that misinterpretation of parts can be prevented, Large defects can be prevented in advance.

According to the present invention, when an abnormality occurs, the input of the PCB is quickly blocked by the interrupt signal, and the manager can check and quickly recover (cancel) the action.

The present invention differs from the existing production line in that it is a mount file, not a BOM file. In other words, since the mount NC file is directly created by using the BOM file and the CAD file, it is applied to the equipment. 1. Part number (material number), 2. Circuit number (coordinate), and 3. CAD angle (coordinate) .

In the present invention, all of the parts supply feeders of an existing company are registered, and a mount file is created, stored and registered in the server, and read out and used immediately. When the mount file is updated on the server, the existing model is automatically compared and judged. (NG) and displays the difference on the screen and / or printout, so that the confirmation and action are quick, and there is a peak that can be stored in the database to manage the history.

In the present invention, the production line configuration includes an SMT mount device 3, control means such as a PLC or a microcomputer, an interface for stopping and operating the production line by an interrupt signal of the control means, 2), an operating program (OS) and various application programs, a scanner (1), a large monitor (4), a supervisory supervisor and a computer for specified persons (5), a PG mount device, a program DB file, Management DB, mount production equipment facility management DB, input / output data, failure, and repair history data. The DB (database) includes model management, material goods receipt, regular scan history, release scan history, and the like.

In the present invention, a database is established by registering a file to be mounted on a computer (5) and a CAD (CAD) in a server by analyzing the registered information, checking the required amount actually required and supplementing the deficient material Thereby achieving efficient production management.

In the present invention, the bar code reader or the bar code gun can scan the bar code of the material, and both the wired and wireless devices can be applied to the corresponding system.

The PDA is connected to a computer or is not connected to a computer and is constructed and used as a wired / wireless network. It is desirable that the operating program (O / S) application program is installed in the PDA itself and the information of the production model is stored in the PDA itself.

In the present invention, the stop of the production line in which the abnormality has occurred is not applied to one kind of mounting equipment, and it is applicable to all mount equipment currently sold on the market.

In the present invention, it is preferable that the large monitor 4 is installed in the field as shown in FIG. 9, but it is installed in the ceiling portion in the middle of the production line so that the supervisor can quickly grasp the situation and cope with it.

In the present invention, the BOM is a list showing the relationship between the parent item and the parts and the usage amount unit for all the items in the bill of materials, and CAD is a circuit diagram that is the basis of the PCB PTN wiring for designing the PCB, Mount Program) is a program that is programmed for each mount by joining CAD & BOM files so that semiconductor, diode, chip, etc. can be actually mounted on a printed circuit board (PCB) do.

In the present invention, a feeder is a device that aligns parts necessary for mount surface mounting and automatically sends the parts to a predetermined place. Depending on the mount type, a feeder may have one component (Part Reel) or a dual feed (Dual Feeder).

Reel means that the part is connected to the reel so that it can be fastened to the feeder.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It is self-evident to those of ordinary skill.

(1) - Scanner
(2) - Mounter equipment
(3) - Interface and actuator
(4) - Large monitor
(5) - computer

Claims (5)

Production planning and history management stage;
Verifying and uploading / downloading the NC file;
Verifying the error;
Followed by SMT equipment upload / download and verification;
Next, the production line configuration, PCB input blocking and decommissioning stages;
Production management system. The method of claim 1,
NC file verification and upload / download,
Establishing a production plan for each production line;
Querying the production history of the NC file;
Generating a program (P / G) of the mount equipment;
Uploading an NC file to a file server (Up Load);
Establishing a model and waiting for the system;
Preparing a model in a standby state for each equipment by production line;
Tightening a feeder to the equipment after changing the model;
Scanning the feeder fastened to the equipment by bar code and verifying the feeder; If there is no abnormality, proceeding to production;
Production management system. The method of claim 2,
A step of automatically downloading (downloading) an NC file using FTP between the step of inquiring the production history of the NC file and the step of generating the program (P / G) of the mount equipment, Further comprising the step of comparing and verifying,
Outputting the operation manual of the corresponding model between the step of preparing the model in the standby state for each equipment by production line and the step of connecting the feeder to the equipment after changing the model and starting the verification, system. The method according to claim 1 or 2,
In addition,
Separately generating a CAD file and a BOM file;
Generating a mount NC file based on the CAD file and the BOM file;
Uploading the mount NC file to the server (Up Load);
Copying the mount file automatically or manually;
Changing the model or proceeding production;
Outputting a feeder list based on the mount file in the step of uploading the mount NC file to the server;
Scanning the model name of the work guide;
Scanning a feeder;
Automatically terminating after completion of the feeder scan if there is no abnormality in the feeder scanning step;
A step of reconfirming a part if the abnormality is found in the feeder scanning step and rescanning the part after the problem is resolved;
Automatically terminating the re-scan after the resolution of the problem;
Production management system. The method according to claim 1 or 2,
PCB input blocking,
Material exchange and sequential inspection;
Performing a scan scan to determine whether there is an abnormality;
Performing the production if there is no abnormality in the scan inspection step;
A step of outputting and displaying a monitoring signal to a monitor installed in the field if an error occurs once due to an error in the scan inspection step;
Stopping the production line and blocking the PCB input when an error occurs once by the above procedure;
Followed by a check by the supervisor;
Then scanning and inspecting again;
If an error occurs due to an error in the scan again, the monitoring signal is output and displayed on the monitor installed in the field, the production line is stopped and the PCB input is interrupted, and if there is no abnormality, the production line is operated normally and the PCB is inputted;
The production is resumed by the PCB input;
Production management system.

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