JP4277453B2 - Data transmission system in assembly line - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a data transmission system in an assembly line for assembling, for example, automobile parts.
[0002]
[Prior art]
For example, in an automobile engine assembly line, a plurality of assembly stations for assembling various parts to the engine are provided continuously, and a single conveyor is provided along these assembly stations. Several types of engines are continuously and randomly flowed on the conveyor. In this case, even if the engine to be assembled is of a single model name, the various parts (for example, spark plugs and piston rings) assembled to it vary depending on whether the automobile is for domestic use or for foreign use. . For example, even if it is for domestic use, the type of parts to be assembled differs depending on whether it is for cold districts or other, and if it is for foreign countries, the type of parts to be assembled will be different if the export region or country is different . For this reason, conventionally, an ID tag is attached to the assembly, and the data indicated on the ID tag is read, and based on this, the component instruction board provided corresponding to each assembly station respectively In order to indicate the contents of assembly.
[0003]
FIG. 3 schematically shows the configuration of the data transmission system in the conventional assembly line. In this figure, 31 is an assembly line, and a conveyor device 32 such as a conveyor is provided from one end to the other end. A plurality of assembling stations 33 are provided adjacent to each other so as to face this. Reference numeral 34 denotes a component instruction board (TCR board) provided in each assembly station 33. Each of the component instruction boards 34 is an assembly to be assembled (or a pallet on which it is mounted) conveyed by the conveying device 32. ) Is provided with a data reading sensor (also referred to as an antenna) 35 for reading data written on an ID tag (not shown). In FIG. 3, 36 is a hub, 37, 38 and 39 are signal cables, 40 is a transceiver, 41 is a terminating resistor, and 42 is a personal computer for assisting parts instruction.
[0004]
In the data transmission system in the assembly line configured as described above, an ID tag attached to an assembly or pallet is attached by a data reading sensor 35 attached to a component instruction board 34 provided in each assembly station 33. The written data is read, and the assembly contents are instructed on the component instruction board 34 based on the read contents.
[0005]
[Problems to be solved by the invention]
However, in the data transmission system in the conventional assembling line, since the data reading sensor 35 is provided in each of the plurality of assembling stations 33, a reading error easily occurs and any one of the assembling stations 33 is provided. If a data reading abnormality occurs at any location, there is a disadvantage that the operation of the entire assembly line is stopped.
[0006]
Also, 1) Change the assembly tact (assembly time) with the change of the assembly, 2) Change the assembly parts with the minor change, 3) The assembly order of the assembly parts However, since it is necessary to change the arrangement interval (pitch) of the assembling stations 33, since the data reading sensors 35 are provided in each assembling station 33, the arrangement station 33 is arranged. Changing the interval has the disadvantage that it takes a lot of labor and time.
[0007]
The present invention has been made in consideration of the above-described matters, and its purpose is to minimize the occurrence of data reading abnormalities, and to change the assembly tact, change the assembly parts, and the assembly sequence. To provide a data transmission system in an assembly line that can operate reliably and reduce the total cost, such as easily changing the arrangement interval of the assembly station to cope with changes in the system That is.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, the various parts are transported so as to sequentially pass through the assembly station, which is composed of a plurality of assembly stations for assembling the various parts to the assembly. The data attached to the assembly to be assembled is read, and based on the read content, the component instruction board provided corresponding to each of the plurality of assembly stations is applied to the assembly to be assembled. In a data transmission system in an assembly line that instructs assembly contents, a reading station including a data reading sensor that reads the data is provided on the upstream side of the plurality of assembly stations, and the data reading sensor The read data is sequentially input to the sequencer, and the input data is shifted by one pitch in the sequencer, Performs data transfer to goods indicia, the data reading sensor for collation and assembly stations and a final assembly station the middle of the plurality of assembly stations is provided, read by the verification data reading sensor It was and is configured so as to match the data read by the data reading sensor provided in the reading station the data.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment of the present invention. First, FIG. 1 shows an example of a configuration of a data transmission system (hereinafter simply referred to as a data transmission system) in an assembly line according to the present invention. In this figure, 1 is an assembly line, Two independent assembly lines 1 are shown. The assembly line 1 is provided with a transfer device 2 such as a conveyor from one end to the other end thereof, and a plurality of assembly stations 3 are provided adjacent to each other so as to face this. Reference numeral 4 denotes a component instruction board (TCR board) provided in each assembly station 3. Each component instruction board 4 is connected to a hub 6 through a signal line 5. Further, the hub 6 is connected to a line 8 via a signal line 7, and this line 8 is connected to a PC 9 for assisting parts instruction via a hub 6A. In addition, 10 is a transceiver provided in the line 8, and 11 is a termination resistor. The configuration so far is not significantly different from the configuration of the conventional data transmission system shown in FIG.
[0010]
The data transmission system of the present invention is significantly different from the conventional data transmission system as follows. That is, in FIG. 1, 12 is a reading station formed at a position upstream of the first assembling station 3a in the assembling line 1, and this assembling station (or this is mounted) A data reading sensor (antenna) 13 is provided for reading data D (see FIG. 2) related to the assembly to be assembled written on the ID tag attached to the pallet. Reference numerals 14 and 15 are collation data reading sensors (antennas) provided in the final assembling station 3e and the intermediate assembling station 3m of the plurality of assembling stations 3, respectively, and have the same functions as the data reading sensor 13. Have The data reading sensor 15 of the intermediate assembling station 3m confirms whether the data of the ID tag read by the data reading sensor 13 of the reading station 12 is correct. The data reading sensor 14 confirms whether the assembly to be assembled coming out from the assembly line 1 is not mistaken for the data read by the reading station 12.
[0011]
In FIG. 1, 16 is a sequencer provided for one assembly line 1 and is composed of, for example, a storage shift board. The output of the data reading sensor 13 provided in the reading station 12 and the outputs of the data reading sensors 14 and 15 for verification provided in the assembling stations 3e and 3m are input to the storage shift board 16. As shown in FIG. 2, the storage shift board 16 is provided in each assembling station 3 by shifting the data D read by the data reading sensor 13 for each pitch in the storage buffer 16B. Is transferred to the component instruction board 4.
[0012]
For example, as shown in FIG. 2, the assembly line 1 is composed of a reading station 12 or less and a plurality of assembly stations 3, 3 a, 3 e, 3 m, and is assembled by a data reading sensor 13 of the reading station 12. It is assumed that body data D (indicated by a back number in the illustrated example) is sequentially read. At this time, the back number as the data D read by the data reading sensor 13 is sequentially shifted by one pitch in the storage buffer 16B of the storage shift board 16 in accordance with, for example, the speed at which the assembly is transported, It is transferred to the component instruction board 4 provided in each of the assembling stations 3, 3a, 3e, 3m. As a result, it can be understood which assembly to be assembled is sent to the component instruction board 4 of each assembly station 3, and based on this, the assembly contents for the assembly can be instructed.
[0013]
In the data transmission system, not only the data reading sensor 13 is provided at the first position (reading station 12) of the assembling line 1, but also the data reading sensors for verification at the middle and the final position of the assembling station 3, respectively. 15 and 14 are provided so that the data from the data reading sensors 15 and 14 for collation are collated with the data of the data reading sensor 13, so that the assembly to be assembled in the assembly line 1 is caused by some cause. It is possible to quickly detect that an abnormality has occurred, such as disappearance or a change in the transport order.
[0014]
The present invention is not limited to the above-described embodiment. For example, a plurality of assembly lines 1 may be assigned to one storage shift board 16, and the data reading sensors 14 and 15 for verification are installed. As another example, it may be provided in another appropriate assembling station 3, and when the assembling line 1 is composed of a large number of assembling stations 3, the number of installation locations may be three or more.
[0015]
【The invention's effect】
As described above, in the data transmission system of the present invention, the data reading sensor for reading the data is provided on the upstream side of the plurality of assembly stations for assembling various parts to the assembly. The reading station is provided, the data read by the data reading sensor is sequentially input to a sequencer, the input data is shifted by one pitch at this sequencer, and data is transferred to the component instruction board. A data reading sensor for collation is provided at an intermediate assembling station and a final assembling station among the plurality of assembling stations, and data read by the data reading sensor for collation is provided as a data reading provided in the reading station. The data read by the sensor is collated, and the assembly line contains Because only not provided data reading sensor for matching the over data reading sensor, configuration of the line and around the assembling is simplified. Therefore, it is possible to easily change the system configuration, such as a change in the arrangement interval of the assembling stations to cope with a change in assembling tact, a change in assembling parts, a change in assembling order, and the like.
[0016]
Further, it is not necessary to provide a data reading sensor in each of a plurality of assembling stations constituting the assembling line, and the number of data reading sensors can be greatly reduced as compared with the conventional case, so that the occurrence rate of reading defects is reduced. In addition, the equipment cost and running cost are reduced, the total cost can be greatly reduced, and an inexpensive and highly accurate data transmission system can be obtained.
[Brief description of the drawings]
FIG. 1 is a configuration diagram schematically showing an example of a data transmission system of the present invention.
FIG. 2 is an operation explanatory diagram of the data transmission system.
FIG. 3 is a diagram schematically illustrating a conventional data transmission system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Assembly line, 3, 3a, 3e, 3m ... Assembly station, 4 ... Parts instruction board, 12 ... Reading station, 13 ... Data reading sensor, 14, 15 ... Data reading sensor for collation, 16 ... Sequencer, D …data.

Claims (1)

Attached to the assembly to be transported so as to sequentially pass through the assembly station through an assembly line composed of a plurality of assembly stations for assembling various parts to the assembly. A set which reads data and, based on the read contents, gives instructions for the contents to be assembled to the parts to be attached to a component instruction board provided corresponding to each of the plurality of assembling stations. In the data transmission system in the attached line, a reading station including a data reading sensor for reading the data is provided upstream of the plurality of assembling stations, and the data read by the data reading sensor is sequentially input to a sequencer. The sequencer shifts the input data by one pitch and transfers the data to the parts instruction board. To the data reading sensor for collation and assembly stations and a final assembly station the middle of the plurality of assembly stations is provided, it provided the data read by the verification data reading sensor in the reading station A data transmission system in an assembly line, wherein the data transmission system is configured to collate with data read by a data reading sensor.

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