JP2003241821A - Production line work instruction system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a production line work instruction system capable of responding to a change of a line flexibly to improve flexibility and expandability. <P>SOLUTION: The system comprises: PDA portable terminals 20a, 20b to display work instruction data; ID tags 17a, 17b provided on a production object 12; a server computer 10 to supply production information; an ID tag control sequencer 14a to receive the instruction data from the server computer 10; an ID antenna 16a to write the instruction data into the ID tag 17a; a production facility 28b to detect the passage of the production object 12; a facility sequencer 13b to generate a preparation request signal in response to the detection of the production object; a line management PC 18b to read the instruction data in the ID tag 17b; and an access point 19 to send the work instruction data based on the read data to the PDA portable terminals 20a, 20b. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production line work instruction system used for the purpose of improving production efficiency, for example, in an assembly process in which different types of products (production targets) are mixedly produced in one line on an automobile production line. In particular, the present invention relates to a production line work instruction system capable of instructing an operator with a mobile terminal how to assemble automobile parts in order to pre-assemble each unit in a sub-assembly line in advance in synchronization with the production order of the main assembly line. Is.

[0002]

2. Description of the Related Art FIG. 8 is a schematic diagram showing a general production line for producing automobiles, for example.
In FIG. 8, 1a is a main assembly line through which a product (vehicle) to be produced is conveyed, and 1b is a subassembly line for assembling parts.

This type of production line is composed of a main assembly line 1a including a conveyor extending from the left side to the right side in the figure, and a plurality of sub-assembly lines 1b appropriately arranged along the main assembly line 1a. There is.

In the leading process section of the main assembly line 1a,
An ID writing unit 1c for an ID (Identification) tag (described later) for each production target is provided.
An ID reading unit 1d is appropriately provided on the downstream side of the D writing unit 1c.

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 passage of a production target.

In the mixed flow production line represented by the assembly line for automobile production shown in FIG. 8, a large number of different types of products can be assembled in a short time by manpower or automatic machines. As a purpose, various measures have been taken to promptly and accurately execute an assembly instruction to an operator.

In particular, in recent years, in order to improve the assembly efficiency in the main assembly line 1a, the main part is made into a unit part, and the assembly work procedure of the unit part is considered according to the production order of the main assembly line 1a. , A method of performing the assembly work in the sub-assembly line 1b in synchronization with the main assembly line 1a is adopted.

FIG. 9 shows, for example, Japanese Unexamined Patent Publication No. 10-161697.
And FIG. 11 is a configuration diagram showing a conventional production line work instruction system described in Japanese Patent Publication No. JP-A-2004-242100, which is an ID writing unit 1c at the head of the line.
And the ID reading unit 1d subsequent thereto. 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.

In FIG. 9, 2 is a main assembly line 1a.
(See FIG. 8) A plurality of branch lines LAN (L
ocal-Area Network: transmission line). Reference numeral 3 denotes a backbone trunk line LAN (transmission line), and a branch line LAN2 is branched and connected in parallel to the backbone trunk line LAN3.

Branch line LAN2 and backbone trunk line LA
N3 is a transmission line of equipment installed in the factory, and each L
As the LANs 2 and 3, in-plant LAN (IEEE802.
3 standards are used).

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, and various work instruction data related to the production line It is supposed to be displayed.

Reference numeral 12 is a plurality of vehicles to be produced,
Each vehicle 12 is provided with ID tags 17a and 17b for storing various instruction data. As will be described later, the assembly instruction data is written in the ID tags 17a and 17b individually provided in each vehicle 12.

In this case, the ID tag 17a corresponds to the vehicle 12 located at the beginning of the line and is associated with the ID writing section 1c. The ID tag 17b corresponds to the vehicle 12 located on the downstream side from the head of the line, and is associated with the ID reading unit 1d.

Further, in order to avoid complexity of the drawings, various elements related to the ID reading section 1d on the main assembly line 1a or the sub-assembly line 1b and the vehicle 12 are shown as shifted from the production line for convenience. ing.

Reference numeral 13a is an equipment sequencer related to the ID writing section 1c, and is connected to the branch line LAN2 in the leading process of the production line. An equipment sequencer 13b is associated with the ID reading unit 1d, and is connected to a branch line LAN2 on the downstream side following the leading process of the production line.

28a and 28b are equipments (production equipments) installed corresponding to respective parts of the production line.
The detection signals from a and 28b are the equipment sequencer 13a,
13b is input.

Reference numeral 14a is a tag control sequencer related to the ID writing section 1c, which is used in the first step of the production line.
It is connected to the branch line LAN2. 14b is an ID reading unit 1
It is a tag control sequencer related to d and is connected to the branch line LAN2 on the downstream side following the leading process of the production line.

ID tag control sequencers 14a, 14b
Is installed corresponding to each equipment sequencer 13a, 13b, receives the assembly instruction data transmitted from the server computer 10 via the branch line LAN2, and receives the data writing timing from each equipment sequencer 13a, 13b.
Receive data read timing.

That is, the equipment sequencer 13a responds to the production target detection signal from the equipment 28a such as conveyor equipment or assembly line equipment in response to the preparation request signal (ID tag 17).
(writing timing to a) is generated and transmitted to the ID tag control sequencer 14a via the branch line LAN2.

In response to this, the ID tag control sequencer 14a executes data write control for the ID tag 17a at the input timing of the preparation request signal.

Further, the equipment sequencer 13b is provided with the equipment 28.
In response to the production target detection signal from b, a preparation request signal (reading timing for the ID tag 17b) is generated,
It is transmitted to the ID tag control sequencer 14b via the branch line LAN2.

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.

Reference numerals 15a and 15b are ID tag controllers connected to the respective ID tag control sequencers 14a and 14b, and perform writing control and reading control of the assembly instruction data for the respective ID tags 17a and 17b.

Reference numerals 16a and 16b denote ID tag antennas connected to the respective ID tag controllers 15a and 15b.
The writing and reading of the assembly instruction data are performed in a contactless manner on the ID tags 17a and 17b.

Next, the operation of the conventional production line work instruction system will be described with reference to FIGS. 8 and 9. The server computer 10 is a product to be manufactured (vehicle 1
Regarding 2), all work instruction content data for each process, which is adjusted in advance to the manufacturing order, is managed.

The work instructing device 11 installed for each process corresponding to the ID reading unit 1d receives work instructing data for only the process from the server computer 10 via the branch line LAN2 and the backbone trunk line LAN3. Stored in internal memory.

First, the ID tag control sequencer 14a of the ID writing unit 1c writes the 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. Put in.

Next, the ID tag control sequencer 14b of the ID reading section 1d passes through the ID tag antenna 16b and the passage signal of the ID tag 17b of the vehicle 12 and NO (number).
And are transmitted to the work instruction apparatus 11 via the branch line LAN2.

The work instructing device 11 reads out memory information necessary for instructing the worker and transmits it to the ID tag control sequencer 14b via the branch line LAN2. The ID tag control sequencer 14b performs a display editing process in response to the transmission information from the work instruction device 11, and transmits the edit result to the work instruction device 11 to display it on the work instruction screen.

Hereinafter, the worker carries out the assembly 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]

As described above, the conventional production line work instruction system uses the non-portable work instruction device 11 that is directly connected to the branch line LAN 2 and fixedly installed. Whenever a layout change such as a change or process reorganization, the work instruction device 1
There is a problem that it is not possible to flexibly cope with a change in the production line, because it is necessary to relocate 1 (work instruction screen) and also network work is required for relocation.

Further, since a plurality of parts are collectively displayed on the screen of the work instruction device 11, the assembled parts of the process cannot be displayed for each worker, which results in flexibility and operability of work instructions. There is a problem that it causes trouble.

Further, at the time of actual assembly, when the operator assembles the parts while looking at the screen of the work instructing device 11, it is necessary to make an erroneous assembly check whether the assembled parts are different from the instructed parts. However, there is a problem that an unskilled worker who is not a veteran cannot easily judge whether the parts are correct or wrong, unless an expert can accurately perform the wrong assembly check.

Further, since the information such as the shortage of the assembled parts due to the continuous operation of the production line is not fed back to the parts management department in real time, the shortage of the parts cannot be dealt with promptly and the measures are delayed. There is a problem that it may hinder the operation of the production line.

The present invention has been made to solve the above-mentioned problems, and by effectively utilizing a PDA mobile terminal, a configuration capable of flexibly responding to line changes and the like is provided, thereby providing flexibility and expansion. The purpose is to obtain a production line work instruction system with improved productivity.

Further, there is no need for the worker to move to the installation location of the screen instruction terminal on the production line side, and a production line work instruction system capable of easily performing work instruction processing on the sub-assembly line anywhere while the worker moves. The purpose is to get.

Further, by displaying the abnormal information of the equipment operation of the corresponding line on the PDA portable terminal separately from the parts instruction screen, it is possible to display the equipment operation status in an easy-to-understand manner on the production line. The purpose is to obtain a work instruction system.

Further, even an inexperienced worker who is not a veteran can easily make an erroneous assembly check at the time of assembly, and reduce a wasteful repair work loss in the subsequent inspection process. The purpose is to get.

[0039]

A production line work instruction system according to the present invention includes a production line including a main assembly line and a sub-assembly line for a plurality of production objects,
A transmission line provided along the production line, a PDA mobile terminal that displays work instruction data related to the production line received via a wireless LAN, and an assembly instruction provided for each production target individually for each production target An ID tag in which data is written, a server computer connected to the transmission line to provide production information related to the production line, and an assembly installed in the first process of the production line and transmitted from the server computer via the transmission line. An ID tag control sequencer for receiving instruction data, and I
It is connected to a D-tag control sequencer and I
ID tag controller and ID for writing to D tag
The antenna, the production equipment that detects the passage of the production target on the production line, the equipment sequencer that is connected to the transmission line and generates the preparation request signal in response to the production target detection signal from the production equipment, and the transmission line A line management PC for reading the assembly instruction data in the ID tag connected at the input timing of the preparation request signal, and work instruction data based on the read data of the line management PC are wirelessly transmitted to the PDA portable terminal by LA.
And an access point transmitting by N.

Further, the PDA mobile terminal of the production line work instruction system according to the present invention reads the bar code attached to each part assembled in the sub-assembly line, and the part data based on the bar code is the data received by the wireless LAN. Different model check is performed to determine whether or not the result is different, and the contents and result of the different model check are displayed.

Further, the production line work instruction system according to the present invention comprises a management PC connected to the transmission line, and a PD.
A mobile terminal transmits the content of the different model check as check information to the line management PC corresponding to the assembly point of the production target, the line management PC transmits the check information to the management PC in real time, and the management PC In response to the check information, feedback management of various corresponding processes regarding the production line is performed.

Further, the PDA portable terminal of the production line work instruction system according to the present invention reads the bar code attached to the main parts assembled in the sub-assembly line, and the part data based on the bar code is the data received by the wireless LAN. Checks whether the product is different or not, and when they are not different, sends the result of the different product check to the line management PC, and the line management PC checks the result of the different product and the main parts collected from the production facility. The assembly information is associated and collectively transmitted to the server computer, and the server computer accumulates the transmission information from the server computer and manages the history for each production target.

Further, the line management PC of the production line work instruction system according to the present invention writes the information associating the different product check result with the assembly information in the ID tag for each assembly process and accumulates the information, and in the final process, The information written in the ID tag is read and transmitted to the server computer.

Further, the production line work instruction system according to the present invention includes a display output data editing unit for editing the display output data of the PDA portable terminal, and the display output data editing unit uses the current production line as the display output data. The work instruction data corresponding to the above, 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 are edited, and the PDA mobile terminal uses the work instruction data and the assembly part data. At the same time, the abnormality check data of the production equipment corresponding to the current production line is divided and displayed in parallel.

[0045]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings. First Embodiment FIG. 1 is a configuration diagram showing a first embodiment of the present invention. The same components as those described above (see FIG. 9) are designated by the same reference numerals and detailed description thereof will be omitted.

In FIG. 1, 18b is a line management PC (Personal Comp) connected to the branch LAN2.
and the ID tag control sequencer 14 described above.
It corresponds to b. The line management PC 18b reads the data written in the ID tag 17b at the input timing of the preparation request signal.

Reference numeral 19 is an access point connected to the branch line LAN2, and 20a and 20b are a plurality of PDs having a display section.
A (Personal Digital Assist)
ants) A mobile terminal.

Here, two PDA portable terminals 20a and 20b are shown for the sake of convenience, but any desired number of PDA portable terminals can be arranged according to the number of workers.

The access points 19 are provided at required plural points on the production line, and the line management PC 18 is provided.
a plurality of PDAs for work instruction data based on the read data of b.
The data is transmitted to the mobile terminals 20a and 20b by wireless LAN.

Next, the operation according to the first embodiment of the present invention shown in FIG. 1 will be described. First, in the leading process of the production line, the equipment sequencer 13a transmits a passage signal of the vehicle 12 to the server computer 10.

Depending on the transmission timing from the equipment sequencer 13a to the server computer 10, the server computer 10
Transmits the assembly instruction data of the product to be assembled. Assembling instruction data includes branch line LAN 2, ID tag control sequencer 1
4a, transmitted through the ID tag controller 15a,
It is written from the ID antenna 16a to the ID tag 17a attached to each vehicle 12 in a non-contact manner.

On the other hand, in the main assembly process (or sub-assembly process), the equipment sequencer 13b operates the equipment 28b.
Read the passing signal from the limiter switch of the
It is transmitted to the line management PC 18b via N2.

The line management PC 18b receives the ID antenna 1 via the line management PC 18b and the ID tag controller 15b according to the reception timing of the passing signal.
ID tag 17 attached to each vehicle 12 from 6b
The assembly instruction data of b is read without contact.

Subsequently, the line management PC 18b processes the read assembly instruction data, transmits the processed data to the access point 19 through the branch line LAN2, and uses the wireless LAN from the access point 19 to perform the PDA of the corresponding process.
It is transmitted to the mobile terminals 20a and 20b.

In response to this, the PDA portable terminal 20a,
20b displays the assembly instruction data on the mobile terminal display unit.

FIG. 2 is a block diagram for explaining the operation of receiving data from the server computer 10. The server computer 10, the line management PC 18b and the PDA portable terminal 20 are shown.
The internal structure of a and 20b is specifically shown.

In FIG. 2, the peripheral structures of the transmission lines 2 and 3 and the equipment sequencers 13a and 13b are the same as those shown in FIG.

The PDA portable terminal 20a has a data communication section 24a for wireless communication with the access point 19.
And a portable terminal display unit 25a for displaying various data input via the data communication unit 24a, and a barcode input unit 26b for reading the barcode attached to each component assembled in the sub-assembly line 1b. It has and.

Similarly, the other PDA portable terminal 20b also includes a data communication section 24b, a portable terminal display section 25b and a bar code input section 26b.

The server computer 10 is a line management PC 18
b, a communication interface unit 30 for communicating via the branch line LAN 2 (see FIG. 1), a server data processing unit 31 connected to the communication interface unit 30, and a server data processing unit 31. Display format data file 32.

The display format data file 32 is
Store display format data as server data. The display format data file 32 is connected to an external inquiry PC 33 as needed,
The stored display format data is referenced or changed.

The line management PC 18b is the server computer 1
Communication interface unit 40 for communicating with 0
A display data processing unit 41 connected to the communication interface unit 40, a display output data editing unit 42 connected to the display data processing unit 41, a display data processing unit 43, and a display connected to the communication interface unit 40. A format data file 44 and a display output data file 45 connected to the display data processing unit 41 and the display output data editing unit 42 are provided.

Next, the operation according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1, first, when the equipment 28b of the sub-assembly line 1b detects a passage signal of the vehicle 12 by the limiter switch, a preparation request signal is sent via the equipment sequencer 13b to the communication interface unit 40 (FIG. 2) in the line management PC 18b.
Input).

The line management PC 18b responds to the input timing of the preparation request signal from the ID antennas 16b to 1
The assembly instruction data of the ID tag 17b attached to the vehicle 12 for each stand is read in a non-contact manner.

The assembly instruction data read from the ID tag 17b is transmitted to the communication interface section 40 in the line management PC 18b via the ID tag controller 15b.

The communication interface section 40 has an ID tag 1
The data read from 7b is received and input 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 of 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.

The display output data editing unit 42 executes the data editing process for display, stores the display data for each portable terminal to be displayed in the display output data file 45, and then the display data communication processing unit 43. To the access point 19 via.

The access point 19 is the PDA portable terminal 20 of the sub-assembly line 1b which is connected by LAN radio.
The display output data is transmitted to a. Display output data is P
The data is input to the data communication unit 24a in the DA mobile terminal 20a and the data is displayed on the mobile terminal display unit 25a.

The editing format data stored in the display format data file 32 in the server computer 10 is appropriately changed by the inquiry personal computer 33.

Each time the setting of edit format data is changed via the inquiry personal computer 33, the line management personal computer 18
It is set in the display format data file 44 via the communication interface section 40 in b, and the changed contents are flexibly reflected in the line instruction.

In this way, 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 computer 10 is constructed. be able to.

Further, P connected to the distributed assembly line system via a branch line LAN (wireless LAN) 2
By using the DA portable terminals 20a and 20b, it is possible to easily move or expand the line installation terminal which is frequently executed every time when the production amount of the vehicle 12 is changed, the process is reorganized, or the model is changed. It is possible to realize a system with improved flexibility and expandability, and to flexibly respond to line changes.

Further, in general, the PDA portable terminals 20a, 2
0b software is WEB browser only,
Application business program is line management PC1
Since it exists in 8b, distribution at the time of changing the program is unnecessary, and it is possible to flexibly deal with functional modification.

Further, by displaying the equipment operation status of the corresponding process on the PDA portable terminal, the operator can be notified of the situation quickly, and the equipment operation rate can be improved by early response.

Embodiment 2. In the first embodiment, the read data from the ID tag 17b is transferred to the line management PC.
Although the edit processing is performed in 18b and the result is displayed on the mobile terminal display unit 25a, the result of the component collation check may be displayed on the mobile terminal display unit 25a as well as the assembly instruction data or the work instruction data.

That is, the bar code input section 26a (bar code reader) provided in the PDA portable terminal 26a is used to read the bar code data (part type, part NO, sequence NO, etc.) attached to the part, ID tag 17 received by wireless LAN from access point 19
It is possible to execute a collation check of whether or not it is similar to the data of b.

FIG. 3 shows a PD according to the second embodiment of the present invention.
It is explanatory drawing which shows an example of the data format content displayed on the portable terminal display part 25a (refer FIG. 2) in A portable terminal 20a.

In FIG. 3, as work instruction data,
The model and assembly part specifications of the production target (vehicle 12) and the collation check result of the barcode input data are collectively displayed.

The black-and-white inverted display portion in FIG. 3 shows parts (error data) that do not correspond to the production line currently applicable. In this way, by displaying the result of the component collation check on the mobile terminal display unit 25a, it is possible to prevent erroneous assembly at the time of assembly.

Further, by displaying the error occurrence data (the column of the work instruction part of the work instruction target) in black and white, it is possible to warn the operator of the error and surely prevent the erroneous assembly.

Third embodiment. In the second embodiment described above, the collation check result of the assembled parts is displayed on the line management PC 18.
Although it was displayed on b and notified to the operator, not only the operator but also various collation check contents are displayed on the line management PC.
You may transmit to the management department of the said production line via 18b.

FIG. 4 is a configuration diagram showing a third embodiment of the present invention configured to transmit various collation check contents to the management department. In FIG. 4, the same components as those described above (see FIG. 1) are designated by the same reference numerals, and detailed description thereof will be omitted. Further, the elements related to the ID writing unit 1c at the head of the line are omitted to simplify the drawing.

In FIG. 4, 27a to 27c are parts to be incorporated into the vehicle 12 on the sub-assembly line 1b, and the part codes (bar codes) of the parts 27a to 27c are PDs.
It is read by the barcode input unit 26a (see FIG. 2) in the A portable terminal 20a.

Reference numeral 34 is a management PC installed in the management department of the relevant production line, which is connected to the branch line LAN2.
Reference numeral 35 denotes a large display device connected to the management PC 34, which displays the collation check contents (part error, missing item, etc.) transmitted from the line management PC 18b, and informs the staff of the management department.

In this case, the PDA portable terminal 20a wirelessly transmits the collation check contents to the access point 19,
Input to the line management PC 18b. Line management PC18
b transmits the collation check content to the management PC 34 of the management department via the branch line LAN2.

As a result, the management PC 34 causes the large-sized display device 35 of the management department to display abnormal information such as a missing item in real time. Therefore, information is transmitted at an early stage, and feedback management for performing an early response process such as changing the order of the main assembly line 1a (see FIG. 8) and procuring spare parts for missing items is realized.

As a result, information can be obtained in order to prevent the influence on the operation at an early stage, and the factor for stopping the production line can be solved at an early stage.

Further, by feeding back the result of the wrong assembly check at the time of assembling to the related departments to enable the early communication and the early countermeasure at the time of abnormality, the sub-assembly line 1
The operation rate can be improved by minimizing the influence on the operation of the main assembly line 1a due to the influence of b.

Fourth Embodiment In the third embodiment, the collation (different model) check result regarding the assembled parts on the sub-assembly line 1b is used as the feedback information. However, particularly for the main parts for which the assembly accuracy is required, the PDA portable terminal is used. The foreign matter check result may be transmitted as feedback information.

FIG. 5 shows the fourth embodiment of the present invention in which the contents of the check for foreign matters relating to the main parts are used as feedback information.
It is a block diagram which shows. In FIG. 5, the same components as those described above (see FIGS. 1, 2, and 4) are designated by the same reference numerals, and detailed description thereof will be omitted. Also, the ID writing unit 1 at the beginning of the line
Elements associated with c have been omitted to simplify the drawing.

In this case, the PDA portable terminal 20a carries out a foreign product check on the main parts which require high precision during assembly. That is, the PDA mobile terminal 20a
Is a part code attached to each part 27a to 27c of the sub-assembly line 1b (bar code such as model number and part NO)
Is read, and it is checked whether or not this code data matches the data received via the branch line LAN2.

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 includes the parts 27a-
When the code data of 27c and the received data match (do not differ), the check result and the assembly information such as the torque of the relevant part collected from the production facility 28b are associated with each other, and the server computer 10 collectively and automatically. Send to.

Hereinafter, the display format data file 32 in the server computer 10 functions as an assembly quality information edit data section for analysis / retrieval, and accumulates check results and assembly information for each product for a long period of time.

As a result, in the server computer 10,
History management for main parts on the sub-assembly line 1b
The processing can be performed faster than the management PC 34 (see FIG. 4) of the related department described above.

Further, by collecting the data of the assembly quality history of the main parts in association with the parts 27a to 27c and storing them in the display format data file 32 in the server computer 10 for a long time, the assembly quality history can be searched at high speed. It can be done easily.

Embodiment 5. In the fourth embodiment, the parts check result and the assembly information for each product are fed back to the server computer 10 in each assembling process for history management, but in each assembling process, the line management PC 18 is used.
The check result and the assembly information are written and stored in the ID tag 17b by means of b and stored in the ID tag 17b in the final process
It is also possible to collectively read the write information in and send it to the server computer 10.

FIG. 6 is a block diagram showing a fifth embodiment of the present invention in which various check contents and assembly information for each process can be written in the ID tag 17b. In FIG. 6, the same components as those described above (see FIG. 5) are designated by the same reference numerals, and detailed description thereof will be omitted. The ID writing section 1c at the beginning of the line
The elements related to are omitted for simplification of the drawing.

In this case, in each process, line management P
The C 18b sends the check contents and the assembly information acquired from the PDA portable terminal 20a to the I antenna 16b.
It is written and stored in the D tag 17b.

Then, in the final process, the line management P
The C 18b collectively reads the information written in the ID tag 17b and sends it to the display format data file 32 in the server computer 10. As a result, the check contents and the assembly information for each process are not transmitted to the server computer 10, so that the communication load on the server computer 10 can be reduced.

Sixth Embodiment In addition, the above-mentioned Embodiments 2 to
In 5, the assembly information and the check information are displayed on the PDA mobile terminals 20a and 20b, but in addition to this, the failure information of the equipment 28b may be divided and displayed in parallel.

FIG. 7 is an explanatory view showing a display format example according to the sixth embodiment of the present invention in which the failure information of the equipment 28b is divided and displayed in parallel on the PDA portable terminal 20a. In FIG. 7, in addition to the above-described screen contents (see FIG. 3) (model and assembly part specifications of vehicle 12, bar code input data collation check result) as work instruction data, abnormality check information of facility 20b is included. It is displayed all at once.

In this case, the PDA portable terminal 20a (see FIG. 6) has the same barcode input section 26a (see FIG. 2) as described above.
(See reference) to read the data of the bar code attached to the parts 27a to 27c (part type, part NO, etc.),
A collation check is performed to see if the data matches the ID tag data received by the wireless LAN.

Hereinafter, the PDA portable terminal 20a displays the collation check result on the portable terminal display unit 25a to prevent erroneous assembly at the time of assembly.

At this time, the display output data editing unit 42 in the line management PC 18b functions as an operation information notification processing unit, and displays the contents displayed on the portable terminal display unit 25a as the work instruction unit and the equipment of the corresponding line. It is divided into an abnormality display section and transmitted to the PDA portable terminal 20a.

Hereinafter, the mobile terminal display unit 25a of the PDA mobile terminal 20a displays in real time a plurality of assembly part instructing units for displaying a plurality of parts names and parts numbers and the operating status of the equipment 28b.

That is, the portable terminal display unit 25a is shown in FIG.
As described above, the operation information of the equipment 28b and the feedback information of the assembly quality aspect from the post-process are divided and displayed in parallel with the assembly component instructing unit.

Thus, the worker can be notified of the maintenance information of the equipment 28b at an early stage. Further, as shown in FIG. 7, it is possible to make it easy for the operator to understand by displaying the warning message at the time of abnormality in reverse video.

[0108]

As described above, according to the present invention, a production line including a main assembly line and a sub-assembly line for a plurality of production targets, a transmission line provided along the production line, and a wireless LAN are used. PDA mobile terminal that displays the work instruction data related to the production line that is received, the ID tag that is individually provided to the production target and in which the assembly instruction data for each production target is written, and the production line that is connected to the transmission line A server computer that provides production information related to the production line, an ID tag control sequencer that is installed in the first process of the production line and receives assembly instruction data transmitted from the server computer via a transmission path, and an ID tag control sequencer. I for connecting and writing assembly instruction data in the ID tag
D-tag controller and ID antenna, production equipment for detecting passage of a production target on a production line, and equipment sequencer connected to a transmission line and generating a preparation request signal in response to a production target detection signal from the production equipment And a line management PC for reading the assembly instruction data in the ID tag connected to the transmission path at the input timing of the preparation request signal, and the work instruction data based on the read data of the line management PC,
Since it has an access point for transmitting to the DA portable terminal via a wireless LAN and can flexibly cope with line changes and the like, a production line work instruction system with improved flexibility and expandability can be obtained. effective.

In addition, the worker does not have to move to the installation location of the screen instruction terminal on the production line, and the worker can easily perform the work instruction processing on the sub-assembly line anywhere while the worker is moving. Even a worker
An erroneous assembly check can be easily performed at the time of assembly, and there is an effect that a production line work instruction system can be obtained in which wasteful repair work loss in the subsequent inspection process is reduced.

Further, according to the present invention, the PDA portable terminal reads the barcode attached to each component assembled on the sub-assembly line, and whether the component data based on the barcode is different from the data received by the wireless LAN. Since the different model check is performed and the contents and result of the different model check are displayed, there is an effect that a production line work instruction system can be obtained that can easily display the check status to the operator. .

Further, according to the present invention, the PDA portable terminal is provided with the management PC connected to the transmission path, and the PDA portable terminal transmits the content of the different model check as the check information to the line management PC corresponding to the assembly point of the production target. However, the line management PC
Since the check information is sent to the management PC in real time, and the management PC responds to the check information to perform feedback management of various corresponding processes related to the production line, the management department is notified of the situation in real time and quickly. There is an effect that a production line work instruction system capable of coping with the above can be obtained.

Further, according to the present invention, the PDA portable terminal reads the bar code attached to the main parts assembled in the sub-assembly line, and is the part data based on the bar code different from the data received by the wireless LAN? If the two products do not differ from each other, the result of the different product check is sent to the line management PC, and the line management PC
Associates the results of the foreign product check with the assembly information of the main parts collected from the production equipment and sends them to the server computer in a batch. The server computer accumulates the transmission information from the server computer and records the history for each production target. I decided to manage it,
There is an effect that a production line work instruction system capable of processing history management at high speed can be obtained.

Further, according to the present invention, the line management PC
Writes the information in which the different product check result is associated with the assembly information in the ID tag for each assembly process and accumulates the information. In the final process, the information written in the ID tag is read and transmitted to the server computer. Therefore, there is an effect that a production line work instruction system in which the transmission load of the server computer is reduced can be obtained.

Further, according to the present invention, a display output data editing section for editing the display output data of the PDA portable terminal is provided, and the display output data editing section,
The work instruction data corresponding to the current production line, 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 are edited, and the PDA mobile terminal edits the work instruction data. Since the abnormality check data of the production equipment corresponding to the current production line is divided and displayed in parallel along with the assembly parts data, the production line work instructions can be displayed to the operator in an easy-to-understand manner. The system is effective.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram specifically showing a data receiving process from the server computer according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a screen display example according to the second embodiment of the present invention.

FIG. 4 is a configuration diagram showing a third embodiment of the present invention.

FIG. 5 is a configuration diagram showing a fourth embodiment of the present invention.

FIG. 6 is a configuration diagram showing a fifth embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a screen display example according to the sixth embodiment of the present invention.

FIG. 8 is a configuration diagram schematically showing a general production line.

FIG. 9 is a configuration diagram showing a conventional production line work instruction system.

[Explanation of symbols]

1a Main assembly line, 1b Sub assembly line, 1c
ID writing unit, 1d ID reading unit, 2 branch lines LAN (transmission line), 3 backbone trunk line LAN (transmission line), 10
Server computer, 12 vehicles (production target), 13a, 13
b 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, 20
b PDA mobile terminal, 27a to 27c parts, 25a,
25b portable terminal display unit, 28a, 28b equipment (production equipment), 32, 44 display format data file, 34 management PC, 42 display output data editing unit.

Claims (6)

[Claims] 1. A production line including a main assembly line and a sub-assembly line for a plurality of production targets, a transmission line provided along the production line, and the production line received via a wireless LAN. A PDA mobile terminal that displays work instruction data, an ID tag that is individually provided to the production target and in which assembly instruction data for each production target is written, and a production connected to the transmission line and associated with the production line A server computer that provides information, an ID tag control sequencer that is installed in the first step of the production line and receives the assembly instruction data transmitted from the server computer via the transmission path, and an ID tag control sequencer An ID tag controller and an ID antenna that are connected to write the assembly instruction data in an ID tag; A production facility for detecting passage of the production target on the transmission line, an equipment 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 the transmission line A line management PC that is connected to read 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 to the PDA mobile terminal. Wireless LAN
Production line work instruction system with an access point for sending by. 2. The PDA portable terminal reads a barcode attached to each component assembled on the sub-assembly line, and determines whether component data based on the barcode is different from data received by the wireless LAN. 2. The production line work instruction system according to claim 1, wherein the different model check is performed, and the content and result of the different model check are displayed. 3. A management PC connected to the transmission path, wherein the PDA portable terminal transmits the content of the different model check as check information to a line management PC corresponding to the assembly point of the production target, The line management PC transmits the check information to the management PC in real time, and the management PC performs feedback management of various corresponding processes regarding the production line in response to the check information. The production line work instruction system described in 2. 4. The PDA mobile terminal reads a barcode attached to a main component assembled in the sub-assembly line, and determines whether component data based on the barcode is different from data received by the wireless LAN. If the two products do not differ from each other, the result of the foreign product check is transmitted to the line management PC, and the line management PC assembles the foreign product check result and the main parts collected from the production facility. The information is associated and transmitted collectively to the server computer, the server computer accumulates transmission information from the server computer, and performs history management for each production target. The production line work instruction system according to claim 3. 5. The line management PC writes the information in which the different product check result is associated with the assembly information in the ID tag for each assembly process and stores the information, and in the final process, writes the information in the ID tag. The production line work instruction system according to claim 4, wherein the stored information is read and transmitted to the server computer. 6. A display output data editing unit for editing display output data of the PDA mobile terminal, wherein the display output data editing unit includes work instruction data corresponding to a current production line as the display output 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 are edited, and the PDA mobile terminal, together with the work instruction data and the assembly part data, The production line work instruction system according to any one of claims 1 to 5, wherein abnormality check data of production equipment corresponding to the current production line is divided and displayed in parallel.