JP4440511B2 - Production line work instruction system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a production line work instruction system used for the purpose of increasing production efficiency in an assembly process in which, for example, different types of products (production targets) are produced in a single line on an automobile production line, and in particular, production of a main assembly line. The present invention relates to a production line work instruction system capable of instructing an assembling content of automobile parts to an operator with a portable terminal in order to assemble in units on a subassembly line in advance in synchronization with the order.
[0002]
[Prior art]
FIG. 8 is a configuration diagram schematically showing a general production line for producing automobiles, for example.
In FIG. 8, 1a is a main assembly line for conveying a product (vehicle) to be produced, and 1b is a sub-assembly line for assembling parts.
[0003]
This type of production line is composed of a main assembly line 1a including a conveyor from the left side to the right side in the figure, and a plurality of sub-assembly lines 1b appropriately disposed along the main assembly line 1a.
[0004]
An ID writing unit 1c for an ID (Identification) tag (to be described later) for each production target is disposed in the head process part of the main assembly line 1a, and an ID reading unit 1d is provided downstream of the ID writing unit 1c. Are appropriately disposed.
[0005]
Although not shown here, various production facilities such as a conveyor facility and an assembly line facility are provided on the production line in order to detect the passage of a production target.
[0006]
In the mixed flow production line represented by the assembly line for automobile production shown in FIG. 8, for the purpose of assembling a large number of different types of products for each unit in a short time via manpower and automatic machines, Various devices have been devised in order to promptly and accurately execute an assembly instruction for an operator.
[0007]
In particular, in recent years, in order to improve the assembly efficiency in the main assembly line 1a, the sub-assembly is performed in consideration of the assembly work procedure of the unit parts in accordance with the production order of the main assembly line 1a with the main part as the unit parts. A system is employed in which the assembly work in the line 1b is performed in synchronization with the main assembly line 1a.
[0008]
FIG. 9 is a block diagram showing a conventional production line work instruction system described in, for example, Japanese Patent Laid-Open No. 10-161697, and shows an ID writing unit 1c at the head of the line and an ID reading unit 1d following this. ing.
Here, a system in which an assembly line work instruction device having an instruction screen is installed in the ID reading unit 1d is shown.
[0009]
In FIG. 9, reference numeral 2 denotes a plurality of branch LANs (Local-Area Networks: transmission lines) arranged along the main assembly line 1a (see FIG. 8). Reference numeral 3 denotes a backbone trunk LAN (transmission path), and a branch line LAN2 is branched and connected in parallel to the backbone trunk LAN3.
[0010]
The branch line LAN 2 and the backbone trunk LAN 3 are transmission lines for devices arranged in the factory, and the LANs 2 and 3 are factory LANs (compliant with the IEEE 802.3 standard).
[0011]
A server computer 10 is connected to the branch line LAN 2 and provides various production information related to the production line.
Reference numeral 11 denotes a work instruction device having an image display device using a cathode ray tube, which is appropriately connected to the branch line LAN 2 corresponding to each work location on the production line. Various kinds of work instruction data related to the production line are sent to the worker. To be displayed.
[0012]
Reference numeral 12 denotes a plurality of vehicles to be produced. For each vehicle 12, ID tags 17a and 17b for storing various instruction data are provided.
As will be described later, assembly instruction data is written in the ID tags 17a and 17b individually provided in each vehicle 12.
[0013]
In this case, the ID tag 17a corresponds to the vehicle 12 located at the head of the line and is related to the ID writing unit 1c.
The ID tag 17b corresponds to the vehicle 12 located on the downstream side from the head of the line and is related to the ID reading unit 1d.
[0014]
In order to avoid complication of the drawings, various elements related to the ID reading unit 1d on the main assembly line 1a or the sub assembly line 1b and the vehicle 12 are shown shifted from the production line for convenience.
[0015]
13a is an equipment sequencer associated with the ID writing unit 1c, and is connected to the branch line LAN2 in the head process of the production line.
Reference numeral 13b denotes an equipment sequencer associated with the ID reading unit 1d, which is connected to the downstream branch line LAN2 following the production line head process.
[0016]
28a and 28b are equipment (production equipment) installed corresponding to each part of the production line, and detection signals from the equipments 28a and 28b are input to the equipment sequencers 13a and 13b.
[0017]
A tag control sequencer 14a associated with the ID writing unit 1c is connected to the branch line LAN2 in the leading process of the production line.
Reference numeral 14b denotes a tag control sequencer related to the ID reading unit 1d, which is connected to the downstream branch line LAN2 following the head process of the production line.
[0018]
The ID tag control sequencers 14a and 14b are installed corresponding to the respective equipment sequencers 13a and 13b, and receive the assembly instruction data transmitted from the server computer 10 via the branch line LAN2, and the respective equipment sequencers 13a and 13b. Receive data write timing and data read timing.
[0019]
That is, the equipment sequencer 13a generates a preparation request signal (timing for writing to the ID tag 17a) in response to a production target detection signal from the equipment 28a such as a conveyor equipment or an assembly line equipment, and sends it via the branch line LAN2. It transmits to ID tag control sequencer 14a.
[0020]
In response to this, the ID tag control sequencer 14a executes data writing control on the ID tag 17a at the input timing of the preparation request signal.
[0021]
In addition, the equipment sequencer 13b generates a preparation request signal (reading timing for the ID tag 17b) in response to the production target detection signal from the equipment 28b, and transmits it to the ID tag control sequencer 14b via the branch line LAN2.
[0022]
In response to this, the ID tag control sequencer 14b executes data read control for the ID tag 17b at the input timing of the preparation request signal.
[0023]
Reference numerals 15a and 15b denote ID tag controllers connected to the ID tag control sequencers 14a and 14b, respectively, which perform writing control and reading control of assembly instruction data for the ID tags 17a and 17b.
[0024]
Reference numerals 16a and 16b denote ID tag antennas connected to the ID tag controllers 15a and 15b, respectively, and write and read assembly instruction data to and from the ID tags 17a and 17b in a non-contact manner.
[0025]
Next, the operation of the conventional production line work instruction system will be described with reference to FIGS.
The server computer 10 manages all the work instruction content data for each process in accordance with the manufacturing order in advance for the product (vehicle 12) to be manufactured.
[0026]
In addition, the work instruction device 11 installed for each process corresponding to the ID reading unit 1d receives work instruction data for only the process from the server computer 10 via the branch line LAN2 and the backbone trunk LAN3, and receives the internal memory. Is stored.
[0027]
First, the ID tag control sequencer 14a of the ID writing section 1c writes assembly instruction data in a non-contact manner to the ID tag 17a of the vehicle 12 located at the head of the production line via the ID tag antenna 16a.
[0028]
Next, the ID tag control sequencer 14b of the ID reading unit 1d receives the passing signal and NO (number) of the ID tag 17b of the vehicle 12 via the ID tag antenna 16b, and receives the work instruction device via the branch line LAN2. 11 to send.
[0029]
The work instruction device 11 reads memory information necessary for an instruction to the worker and transmits it to the ID tag control sequencer 14b via the branch line LAN2.
The ID tag control sequencer 14b performs display editing processing in response to the transmission information from the work instruction device 11, transmits the editing result to the work instruction device 11, and displays it on the work instruction screen.
[0030]
Hereinafter, the worker performs assembling work of each part on the main assembly line 1a or the sub assembly line 1b while looking at the work instruction screen of the work instruction device 11.
[0031]
[Problems to be solved by the invention]
As described above, the conventional production line work instruction system uses the non-portable work instruction apparatus 11 that is directly connected to the branch line LAN 2 and is fixedly installed. Therefore, the layout change such as the production line model change or process reorganization is performed. In some cases, it is necessary to relocate the work instruction device 11 (work instruction screen) each time, and network work accompanying the relocation is necessary, which makes it difficult to flexibly cope with production line changes. It was.
[0032]
In addition, since a plurality of parts are displayed collectively on the screen of the work instruction apparatus 11, the assembly parts in the process cannot be displayed for each worker, and the work instruction flexibility and operability are hindered. There was a problem.
[0033]
In addition, when an operator assembles a part while looking at the screen of the work instruction apparatus 11 at the actual assembly time, it is necessary to perform an incorrect assembly check as to whether or not the assembly part is different from the instruction part. Otherwise, there is a problem that an incorrect assembly check cannot be performed accurately, and an unskilled worker who is not a veteran cannot easily determine whether or not the part is correct.
[0034]
In addition, information such as missing parts of assembly parts due to the continuous operation of the production line is not fed back to the parts management department in real time, so it is not possible to respond quickly to missing parts, etc. There was a problem that the operation could be hindered.
[0035]
The present invention has been made to solve the above problems, and by making effective use of PDA portable terminals, it is possible to flexibly cope with line changes, etc., and to improve flexibility and expandability. The purpose is to obtain a production line work instruction system.
[0036]
Also, it is possible to obtain a production line work instruction system that does not require the worker to move to the installation location of the screen instruction terminal on the production line side and can easily perform work instruction processing on the sub-assembly line anywhere while the worker moves. Objective.
[0037]
In addition, the production line work instruction system can display the equipment operation status in an easy-to-understand manner for the operator by dividing the abnormality information on the equipment operation of the corresponding line into the parts instruction screen and displaying it on the PDA portable terminal. The purpose is to obtain.
[0038]
Furthermore, even an unskilled unskilled worker can easily perform a wrong assembly check at the time of assembly, and obtain a production line work instruction system that can reduce unnecessary rework loss in the subsequent inspection process. Objective.
[0039]
[Means for Solving the Problems]
  A production line work instruction system according to the present invention includes a production line including a main assembly line and sub-assembly lines for a plurality of production objects, a transmission line provided along the production line, and a production received via a wireless LAN. PDA portable terminal that displays work instruction data related to the line, an ID tag that is individually provided for a production target and in which assembly instruction data for each production target is written, and is connected to a transmission path, A server computer that provides assembly instruction data as production information related to the production line, and an ID tag control sequencer that is installed in the top process of the production line and receives assembly instruction data transmitted from the server computer via a transmission path; An ID tag controller connected to the ID tag control sequencer for writing assembly instruction data into the ID tag; A D antenna, a production facility for detecting the passage of a production target on the production line, a facility sequencer connected to the transmission line to generate a preparation request signal in response to a production target detection signal from the production facility, and a transmission line The line management PC for reading the assembly instruction data in the ID tag at the input timing of the preparation request signal and the work instruction data based on the read data of the line management PC are transmitted to the PDA portable terminal by wireless LAN. An access point and a management PC connected to the transmission path, the PDA portable terminal reads the barcode attached to each component assembled in the sub-assembly line, and receives the component data based on the barcode by the wireless LAN Check whether the data differs from the selected data, display the contents and results of the heterogeneous check, and The contents of the check are transmitted as check information to the line management PC corresponding to the assembly point of the production target, and the PDA portable terminal reads the barcode attached to the main part assembled in the sub-assembly line, and the barcode Check whether or not the part data based on the data is different from the data received by the wireless LAN, and if both are not different, send the result of the different goods check to the line management PC. Is sent to the management PC in real time, and the result of checking the different products and the assembly information of the main parts collected from the production equipment are linked together and sent to the server computer. The management PC responds to the check information,Heterogeneous model check information or missing item informationIncluding the production lineDisplay verification check contentsThe server computer isLine management PCThe transmission information from is accumulated, and history management for each production target is performed.
[0043]
Further, the line management PC of the production line work instruction system according to the present invention writes and accumulates information relating the result of checking the different products and the assembly information in the ID tag for each assembly process, and stores it in the ID tag in the final process. The written information is read and transmitted to the server computer.
[0044]
The production line work instruction system according to the present invention further includes a display output data editing unit for editing display output data of the PDA portable terminal, and the display output data editing unit corresponds to the current production line as display output data. Edit the work instruction data, the assembly part data corresponding to the current production line, and the abnormality check data of the production equipment corresponding to the current production line. The abnormal check data of the production equipment corresponding to the production line is divided and displayed in parallel.
[0045]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
  Hereinafter, the first embodiment of the present invention will be described in detail with reference to the drawings.
  FIG. 1 shows a first embodiment of the present invention.Reference example 1 related toThe same components as those described above (see FIG. 9) are denoted by the same reference numerals and will not be described in detail.
[0046]
In FIG. 1, reference numeral 18b denotes a line management PC (Personal Computer) connected to the branch LAN 2 and corresponds to the ID tag control sequencer 14b described above. The line management PC 18b reads the data written in the ID tag 17b at the input timing of the preparation request signal.
[0047]
Reference numeral 19 denotes an access point connected to the branch line LAN2, and 20a and 20b denote a plurality of PDA (Personal Digital Assistants) portable terminals having a display unit.
[0048]
Here, two PDA portable terminals 20a and 20b are shown for convenience, but any necessary number of PDA portable terminals can be arranged according to the number of workers.
[0049]
The access points 19 are provided at a plurality of required locations on the production line, and transmit work instruction data based on the read data of the line management PC 18b to the plurality of PDA portable terminals 20a and 20b via a wireless LAN.
[0050]
  Next, as shown in FIG.Reference example 1The operation of will be described.
  First, in the first process of the production line, the equipment sequencer 13 a transmits a passing signal of the vehicle 12 to the server computer 10.
[0051]
At the transmission timing from the equipment sequencer 13a to the server computer 10, the server computer 10 transmits the assembly instruction data of the assembly target product.
The assembly instruction data is transmitted via the branch line LAN 2, the ID tag control sequencer 14a, and the ID tag controller 15a, and is written in a non-contact manner from the ID antenna 16a to the ID tag 17a attached to each vehicle 12.
[0052]
On the other hand, in the main assembly process (or sub-assembly process), the equipment sequencer 13b reads a passing signal from the limiter switch of the equipment 28b and transmits it to the line management PC 18b via the branch line LAN2.
[0053]
The line management PC 18b contacts the assembly instruction data of the ID tag 17b attached to each vehicle 12 from the ID antenna 16b via the line management PC 18b and the ID tag controller 15b in accordance with the reception timing of the passage signal. Read.
[0054]
Subsequently, the line management PC 18b processes the read assembly instruction data, transmits the processing data to the access point 19 via the branch line LAN2, and uses the wireless LAN from the access point 19 to the PDA portable terminal 20a of the corresponding process. , 20b.
[0055]
In response to this, the PDA portable terminals 20a and 20b display the assembly instruction data on the portable terminal display unit.
[0056]
FIG. 2 is a block diagram for explaining an operation of receiving data from the server computer 10, and specifically shows the internal configuration of the server computer 10, the line management PC 18b, and the PDA portable terminals 20a and 20b.
[0057]
In FIG. 2, peripheral configurations such as the transmission paths 2 and 3 and the equipment sequencers 13a and 13b are omitted because they are as shown in FIG.
[0058]
The PDA portable terminal 20a includes a data communication unit 24a for wireless communication with the access point 19, a portable terminal display unit 25a for displaying various data input via the data communication unit 24a, and a subassembly. And a barcode input unit 26b for reading a barcode attached to each component assembled on the line 1b.
[0059]
Similarly, the other PDA portable terminal 20b includes a data communication unit 24b, a portable terminal display unit 25b, and a barcode input unit 26b.
[0060]
The server computer 10 includes a communication interface unit 30 for communicating with the line management PC 18b via the branch LAN 2 (see FIG. 1), a server / data processing unit 31 connected to the communication interface unit 30, a server A display format data file 32 connected to the data processing unit 31.
[0061]
The display format data file 32 stores display format data as server data.
The display format data file 32 is referred to or changed by the external inquiry PC 33 being appropriately connected as necessary to store the display format data.
[0062]
The line management PC 18b includes a communication interface unit 40 for communicating with the server computer 10, a display data processing unit 41 connected to the communication interface unit 40, and a display output data editing unit connected to the display data processing unit 41. Unit 42, display data processing unit 43, display format data file 44 connected to communication interface unit 40, and display output data file 45 connected to display data processing unit 41 and display output data editing unit 42. ing.
[0063]
  Next, referring to FIG. 1 and FIG.Reference example 1The operation of will be described.
  In FIG. 1, first, when the equipment 28b of the sub-assembly line 1b detects a passing signal of the vehicle 12 by the limiter switch, the preparation request signal is sent to the communication interface unit 40 in the line management PC 18b via the equipment sequencer 13b (see FIG. 2). Is input.
[0064]
In response to the input timing of the preparation request signal, the line management PC 18b reads the assembly instruction data of the ID tag 17b attached to each vehicle 12 from the ID antenna 16b in a non-contact manner.
[0065]
The assembly instruction data read from the ID tag 17b is transmitted to the communication interface unit 40 in the line management PC 18b via the ID tag controller 15b.
[0066]
The communication interface unit 40 receives the data read from the ID tag 17 b and inputs it to the display data processing unit 41.
The display data processing unit 41 reads the display format of the PDA portable terminal designated by the data in the display format data file 44 transmitted in advance from the server computer 10 and transmits it to the display output data editing unit 42.
[0067]
The display output data editing unit 42 executes display data editing processing, stores display data for each portable terminal to be displayed in the display output data file 45, and then passes through the display data communication processing unit 43. Output to the access point 19.
[0068]
The access point 19 transmits display output data to the PDA portable terminal 20a of the sub-assembly line 1b connected by LAN wireless.
The display output data is input to the data communication unit 24a in the PDA portable terminal 20a, and the data is displayed on the portable terminal display unit 25a.
[0069]
The edit format data stored in the display format data file 32 in the server computer 10 is appropriately changed by the inquiry personal computer 33.
[0070]
The edit format data is set in the display format data file 44 via the communication interface unit 40 in the line management PC 18b every time the setting is changed via the inquiry personal computer 33, and the changed contents are flexibly reflected in the line instruction. .
[0071]
As described above, by utilizing the ID tags 17a and 17b, a distributed assembly line system capable of editing assembly instruction data without frequently communicating with the host server computer 10 can be configured. .
[0072]
Further, by utilizing the PDA portable terminals 20a and 20b connected via the branch LAN (wireless LAN) 2 to the distributed assembly line system, the production amount variation, the process reorganization, and the model related to the vehicle 12 are performed. It is possible to realize a system with improved flexibility and expandability that can easily cope with the relocation and expansion of line installation terminals that are frequently executed every time a change is made. It can respond flexibly.
[0073]
In general, the PDA mobile terminals 20a and 20b have only a WEB browser, and the application business program exists in the line management PC 18b. Therefore, distribution at the time of program change is not required, and function modification is flexible. Can respond.
[0074]
Further, by displaying the equipment operation status of the corresponding process on the PDA portable terminal, it is possible to quickly notify the worker of the situation, and the equipment operation rate can be improved by early response.
[0075]
  Reference Example 1 aboveThen, the read data from the ID tag 17b is edited by the line management PC 18b and displayed on the portable terminal display unit 25a. However, not only the assembly instruction data or the work instruction data but also the result of the component verification check is displayed on the portable terminal display unit. 25a may be displayed.
[0076]
That is, the barcode input unit 26a (barcode reader) provided in the PDA portable terminal 26a is used to read the barcode data (component model, component NO, sequence NO, etc.) attached to the component, and the access point 19 The collation check can be executed to determine whether the data is the same as the data of the ID tag 17b received from the wireless LAN.
[0077]
  FIG. 3 shows the present invention.Reference Example 2 related to Embodiment 1It is explanatory drawing which shows an example of the data format content displayed on the portable terminal display part 25a (refer FIG. 2) in PDA portable terminal 20a by.
[0078]
In FIG. 3, as the work instruction data, the type and assembly part specification of the production target (vehicle 12) and the collation check result of the barcode input data are collectively displayed.
[0079]
Also, the black and white reverse display portion in FIG. 3 indicates parts (error data) that do not correspond to the currently corresponding production line.
In this way, by displaying the component verification check result on the mobile terminal display unit 25a, it is possible to prevent erroneous assembly at the time of assembly.
[0080]
Further, by displaying the error occurrence data (the work instruction target work instruction component column) in black and white reversed, it is possible to warn the operator of the occurrence of the error and reliably prevent erroneous assembly.
[0081]
  Reference example 2 aboveThen, the verification result of the assembly part is displayed on the line management PC 18b and notified to the operator. However, not only the notification to the operator but also various verification check contents are managed via the line management PC 18b. You may send it to a department.
[0082]
  4 is configured to send various verification check contents to the management department.Reference example 3FIG.
  4, the same components as those described above (see FIG. 1) are denoted by the same reference numerals, and detailed description thereof is omitted. In addition, elements related to the ID writing unit 1c at the head of the line are omitted for simplifying the drawing.
[0083]
In FIG. 4, 27a to 27c are parts assembled into the vehicle 12 in the sub-assembly line 1b, and the part codes (barcodes) of the parts 27a to 27c are the barcode input section 26a (see FIG. 5) in the PDA portable terminal 20a. 2).
[0084]
Reference numeral 34 denotes a management PC installed in the management department of the corresponding production line, and is connected to the branch line LAN2.
A large display device 35 connected to the management PC 34 displays the contents of the collation check (part errors, missing items, etc.) transmitted from the line management PC 18b and notifies the management department staff.
[0085]
In this case, the PDA portable terminal 20a wirelessly transmits the verification check content to the access point 19 and inputs it to the line management PC 18b.
The line management PC 18b transmits the verification check content to the management PC 34 of the management department via the branch line LAN2.
[0086]
As a result, the management PC 34 causes the large display device 35 of the management department to display abnormality information such as a shortage in real time.
Therefore, early information transmission is performed, and feedback management for early response processing such as, for example, changing the order of the main assembly line 1a (see FIG. 8) and procuring spare parts for missing parts is realized.
[0087]
Thereby, information can be obtained in order to prevent the influence on the operation at an early stage, and the cause for stopping the production line can be solved at an early stage.
[0088]
In addition, by feeding back the result of the incorrect assembly check at the time of assembly to the related departments, enabling early notification in case of an abnormality and early countermeasures, the influence on the operation of the main assembly line 1a due to the influence of the sub assembly line 1b It is possible to improve the operating rate by keeping it to a minimum.
[0089]
  Reference Example 3 aboveIn the sub assembly line 1b, the collation (different model) check result regarding the assembled parts is used as feedback information. However, for the main parts that particularly require assembly accuracy, the different product check results on the PDA portable terminal are fed back. AsIt is desirable to send.
[0090]
  FIG. 5 shows the contents of the foreign item check on main parts as feedback information.Embodiment 1FIG.
  In FIG. 5, the same components as those described above (see FIGS. 1, 2, and 4) are denoted by the same reference numerals, and detailed description thereof is omitted. In addition, elements related to the ID writing unit 1c at the head of the line are omitted for simplifying the drawing.
[0091]
In this case, the PDA portable terminal 20a performs a foreign item check on main parts that require high accuracy during assembly.
That is, the PDA portable terminal 20a reads the component codes (bar codes such as model and component NO) attached to the components 27a to 27c of the subassembly line 1b, and the code data is received from the data received via the branch line LAN2. Check if they match.
[0092]
The result of this check is transmitted from the PDA portable terminal 20a to the line management PC 18b via the branch line LAN2.
The line management PC 18b associates the check result with assembly information such as the torque of the relevant part collected from the production facility 28b when the code data and the received data of the parts 27a to 27c match (not different), The data is automatically transmitted to the server computer 10 at once.
[0093]
Hereinafter, the display format data file 32 in the server computer 10 functions as an assembly quality information edit data section for analysis and search, and accumulates check results and assembly information for each product for a long period of time.
[0094]
As a result, the server computer 10 can process the history management related to the main parts in the sub-assembly line 1b at a higher speed than the management PC 34 (see FIG. 4) of the related department described above.
[0095]
Further, the assembly quality history data of the main parts is collected in association with the parts 27a to 27c and stored in the display format data file 32 in the server computer 10 for a long period of time, so that the assembly quality history can be retrieved quickly and easily. be able to.
[0096]
Embodiment 2.
  The aboveEmbodiment 1In each assembly process, the part check result and assembly information for each product are fed back to the server computer 10 for history management. In each assembly process, the check result and assembly information are written to the ID tag 17b by the line management PC 18b. In the final step, the write information in the ID tag 17b may be read in a batch and transmitted to the server computer 10.
[0097]
  FIG. 6 shows the present invention in which various check contents and assembly information for each process can be written in the ID tag 17b.Embodiment 2FIG.
  In FIG. 6, the same components as those described above (see FIG. 5) are denoted by the same reference numerals and detailed description thereof is omitted. In addition, elements related to the ID writing unit 1c at the head of the line are omitted for simplifying the drawing.
[0098]
In this case, in each process, the line management PC 18b writes the check contents and assembly information acquired from the PDA portable terminal 20a from the ID antenna 16b to the ID tag 17b and stores them.
[0099]
In the final process, the line management PC 18b reads the information written in the ID tag 17b at a time and transmits it to the display format data file 32 in the server computer 10.
Thereby, since the check contents and assembly information for each process are not transmitted to the server computer 10, the communication load of the server computer 10 can be reduced.
[0100]
Embodiment 3.
  The aboveEmbodiments 1 and 2In the PDA portable terminals 20a and 20b, the assembly information and the check information are displayed, but in addition to this, the failure information of the equipment 28b may be divided and displayed in parallel.
[0101]
  FIG. 7 shows the failure information of the equipment 28b in the PDA portable terminal 20a divided and displayed in parallel.Embodiment 3It is explanatory drawing which shows the example of a display format by.
  In FIG. 7, in addition to the above-mentioned screen contents (model and assembly part specifications of vehicle 12, and verification result of barcode input data) as the work instruction data, abnormality check information of equipment 20b is included. It is displayed all at once.
[0102]
In this case, the PDA portable terminal 20a (see FIG. 6) uses the barcode input unit 26a (see FIG. 2) to store the barcode data (component model, component) on the components 27a to 27c, as described above. No.) is read, and a collation check is performed to determine whether the data matches the ID tag data received by the wireless LAN.
[0103]
Hereinafter, the PDA portable terminal 20a displays the verification check result on the portable terminal display unit 25a, thereby preventing erroneous assembly at the time of assembly.
[0104]
At this time, the display output data editing unit 42 in the line management PC 18b functions as an operation information report processing unit, and displays the contents displayed on the portable terminal display unit 25a as a work instruction unit and an equipment abnormality display unit for the corresponding line. And transmitted to the PDA portable terminal 20a.
[0105]
Hereinafter, the portable terminal display unit 25a of the PDA portable terminal 20a displays a plurality of assembly component instruction units for displaying a plurality of component names and component numbers and a plurality of operation states of the equipment 28b in real time.
[0106]
That is, as shown in FIG. 7, the portable terminal display unit 25a displays the operation information of the equipment 28b and the feedback information of the assembly quality from the subsequent process in parallel with the assembly part instruction unit.
[0107]
Thereby, the maintenance information of the equipment 28b can be notified to the worker at an early stage.
Further, as shown in FIG. 7, the warning message at the time of abnormality can be displayed in reverse so that the operator can easily understand.
[0108]
【The invention's effect】
  As described above, according to the present invention, the production line including the main assembly line and the sub-assembly line for a plurality of production objects, the transmission path provided along the production line, and the production received via the wireless LAN PDA portable terminal that displays work instruction data related to the line, an ID tag that is individually provided for a production target and in which assembly instruction data for each production target is written, and is connected to a transmission path, A server computer that provides assembly instruction data as production information related to the production line, and an ID tag control sequencer that is installed in the top process of the production line and receives assembly instruction data transmitted from the server computer via a transmission line; ID tag controller and ID antenna connected to ID tag control sequencer for writing assembly instruction data to ID tag A production facility that detects the passage of a production target on the production line, a facility sequencer that is connected to the transmission line and generates a preparation request signal in response to a production target detection signal from the production facility, and is connected to the transmission line. A line management PC for reading assembly instruction data in the ID tag at the input timing of the preparation request signal, and an access point for transmitting work instruction data based on the read data of the line management PC to the PDA portable terminal by wireless LANAnd a management PC connected to the transmission line, and the PDA portable terminal reads the barcode attached to each component assembled in the sub-assembly line, and the component data based on the barcode is received by the wireless LAN. And check the different model check contents and results, and send the contents of the different model check as check information to the line management PC corresponding to the assembly point of production, Furthermore, the PDA mobile terminal reads the barcode attached to the main part assembled in the sub-assembly line, and checks whether the part data based on the barcode is different from the data received by the wireless LAN. If the two do not differ, the foreign product check result is sent to the line management PC. In addition to sending to the management PC at the same time, the non-conformity check result and the assembly information of the main parts collected from the production equipment are linked to each other and sent to the server computer. In response to the check information, the management PC Feedback management of various processing related to the production line, including the change of the order of the main assembly line in the server computer, the server computer accumulates transmission information from the server computer, and manages the history for each production targetSince the configuration can flexibly cope with line changes and the like, there is an effect that a production line work instruction system with improved flexibility and expandability can be obtained.
[0109]
In addition, it is possible to easily perform work instruction processing for the sub-assembly line anywhere while the worker is moving without moving the worker to the installation location of the screen instruction terminal on the production line side. Even in such a case, it is possible to easily perform a wrong assembly check at the time of assembly, and there is an effect that a production line work instruction system can be obtained in which useless rework work loss in a subsequent inspection process is reduced.
[0110]
According to the present invention, the PDA portable terminal reads the barcode attached to each component assembled in the sub-assembly line, and determines whether the component data based on the barcode is different from the data received by the wireless LAN. Since the heterogeneous model check is performed and the contents and results of the heterogeneous model check are displayed, there is an effect that a production line work instruction system capable of easily displaying the check status for the worker can be obtained.
[0111]
  Moreover, according to this invention, the management PC connected to the transmission line is provided, and the PDA portable terminalBased on the barcode attached to each partThe contents of the heterogeneous check are sent as check information to the line management PC corresponding to the assembly point of the production target. The line management PC sends the check information to the management PC in real time, and the management PC responds to the check information. The, Including changing the order of the main assembly line in the event of an abnormality,Since the feedback management of the various processing related to the production line is performed, there is an effect that a production line work instruction system capable of promptly dealing with the management department by notifying the real-time situation is obtained.
[0112]
According to the present invention, the PDA portable terminal reads the barcode attached to the main part assembled in the sub-assembly line, and whether or not the part data based on the barcode is different from the data received by the wireless LAN. If a different product check is performed and the two are not different, the result of the different product check is transmitted to the line management PC. Since the server computer accumulates transmission information from the server computer and manages the history for each production target, the production line work instructions that can process the history management at high speed The system is effective.
[0113]
Further, according to the present invention, the line management PC writes and accumulates information associating the result of checking the different product with the assembly information in the ID tag for each assembly process, and is written in the ID tag in the final process. Since the information is read and transmitted to the server computer, there is an effect that a production line work instruction system that reduces the transmission load of the server computer can be obtained.
[0114]
In addition, according to the present invention, the display output data editing unit that edits the display output data of the PDA portable terminal is provided. The display output data editing unit includes, as display output data, work instruction data corresponding to the current production line, Edit the assembly part data corresponding to the current production line and the abnormality check data of the production equipment corresponding to the current production line, and the PDA mobile terminal supports the current production line together with the work instruction data and the assembly part data. Since the abnormality check data of the production equipment to be displayed is divided and displayed in parallel, there is an effect that a production line work instruction system that can easily display the operation status of the equipment for the worker can be obtained.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of the present invention.Reference example 1 related toFIG.
[Figure 2]Reference example 1It is a block diagram which shows concretely the data reception process from the server computer by.
FIG. 3 shows an embodiment of the present invention.Reference example 2 related to 1It is explanatory drawing which shows the example of a screen display by.
FIG. 4 is an embodiment of the present invention.Reference example 3 related to 1FIG.
FIG. 5 of the present inventionEmbodiment 1FIG.
FIG. 6 of the present inventionEmbodiment 2FIG.
FIG. 7 of the present inventionEmbodiment 3It is explanatory drawing which shows the example of a screen display by.
FIG. 8 is a configuration diagram schematically showing a general production line.
FIG. 9 is a block diagram showing a conventional production line work instruction system.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 1a Main assembly line, 1b Sub assembly line, 1c ID writing part, 1d ID reading part, 2 branch line LAN (transmission path), 3 backbone trunk LAN (transmission path), 10 server computer, 12 vehicle (production object), 13a , 13b equipment sequencer, 14a ID tag control sequencer, 15a, 15b ID tag controller, 16a, 16b ID antenna, 17a ID tag, 18b line management PC, 19 access point, 20a, 20b PDA mobile terminal, 27a-27c parts, 25a , 25b Mobile terminal display unit, 28a, 28b Equipment (production equipment), 32, 44 Display format data file, 34 Management PC, 42 Display output data editing unit.

Claims (3)

A production line including a main assembly line and sub-assembly lines for a plurality of production objects;
A transmission line provided along the production line;
A PDA portable terminal that displays work instruction data related to the production line received via a wireless LAN;
An ID tag that is individually provided for the production target and in which assembly instruction data for each production target is written;
A server computer connected to the transmission line and providing the work instruction data and the assembly instruction data as production information related to the production line;
An ID tag control sequencer that receives the assembly instruction data that is installed in the top process of the production line and transmitted from the server computer via the transmission path;
An ID tag controller and an ID antenna connected to the ID tag control sequencer for writing the assembly instruction data into the ID tag;
Production equipment for detecting passage of the production object on the production line;
An equipment sequencer that is connected to the transmission line and generates a preparation request signal in response to a production target detection signal from the production equipment;
A line management PC connected to the transmission line for reading assembly instruction data in the ID tag at the input timing of the preparation request signal;
An access point that transmits the work instruction data based on the read data of the line management PC to the PDA portable terminal by the wireless LAN;
A management PC connected to the transmission line,
The PDA mobile terminal
Read the barcode attached to each component assembled in the sub-assembly line, and perform a heterogeneous check to determine whether the component data based on the barcode is different from the data received by the wireless LAN,
The contents and results of the heterogeneous check are displayed, and the contents of the heterogeneous check are transmitted as check information to a line management PC corresponding to the assembly point of the production target.
Furthermore, the PDA mobile terminal
The barcode attached to the main part assembled in the sub-assembly line is read, and a different product check is performed to determine whether the part data based on the barcode is different from the data received by the wireless LAN. In this case, the foreign product check result is sent to the line management PC,
The line management PC transmits the check information to the management PC in real time, and transmits the check result of the foreign product and the assembly information of the main parts collected from the production facility in a batch to the server computer. And
In response to the check information, the management PC displays collation check contents regarding the production line including heterogeneous model check information or missing part information ,
The production line work instruction system characterized in that the server computer accumulates transmission information from the line management PC and performs history management for each production target. The line management PC
Information that associates the result of checking the foreign product and the assembly information is written and accumulated in the ID tag for each assembly process,
2. The production line work instruction system according to claim 1, wherein in a final step, the information written in the ID tag is read and transmitted to the server computer. A display output data editing unit for editing display output data of the PDA portable terminal;
The display output data editing unit includes, as the display output data, work instruction data corresponding to a current production line, assembly part data corresponding to the current production line, and production equipment corresponding to the current production line. Edit the error check data and
The PDA portable terminal divides and displays in parallel the abnormality check data of the production equipment corresponding to the current production line, together with the work instruction data and the assembly part data. The production line work instruction system described.

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