JPH0615534A - Automatic electronic parts changer - Google Patents

Abstract

PURPOSE:To prevent any missupply of electronic parts caused by the mistake of a worker by arranging a control unit for controlling a storing unit and a carrying unit so as to change a part supply unit based on the information from a read-out/write-in means. CONSTITUTION:The read-out/write-in means 6a, 6b for reading out/writing-in the information regarding electronic parts are installed between the information memory unit provided in a part supply unit 1 so as to enable the read-out/write- in of the information regarding the electronic parts and the information memory unit installed in a storing unit 2 and a carrying unit 3. The storing unit 2 and the carrying unit 3 are controlled by a control unit so as to change the part supply unit 1 based on the information from this read-out/write-in means 6a, 6b so as to prevent the missupply of the electronic parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component automatic exchange device for automatically exchanging electronic components in a mounting / demounting system for mounting electronic components on a printed board.

[0002]

2. Description of the Related Art In mounting electronic components on a printed circuit board, a plurality of component supply units holding the electronic components are used, and the electronic components are picked up from the component supply units and mounted at predetermined positions on the substrate. . FIG. 16 shows an electronic component automatic mounting machine using the component supply unit described in Japanese Patent Publication No. 3-21111. This mounting machine includes a mounting portion 110 to which a substrate (printed circuit board) 100 is supplied,
A plurality of component supply units 120 are arranged in a line and mounted, and a carriage 130 that reciprocates in the Z direction and a new replacement component supply unit 120 are mounted and the carriage 13
The auxiliary placing table 140 provided near the 0 movement path, and the transfer unit 150 that transfers the component supply unit 120 between the preliminary placing table 140 and the shuttle 130. In this case, the mounting unit 110 includes a mounting device 111 that moves in the X and Y directions to take out electronic components from the component supply unit 120 on the carriage 130 and mount them on the board 100.

In mounting electronic parts, a carriage 130 is used.
When an empty storage space is prepared next to the above-mentioned component supply unit 120 to be replaced, and when the component supply unit runs out of components, the worker carries the component supply unit holding electronic components of the same type from the unit storage or the like. Ready and stand 14
Place it on 0. After that, when the substrate is replaced, the transfer unit 15
0 is the new component supply unit 12 on the stand 140
0 is supplied to the empty space of the carriage 130, and electronic parts are mounted using this new parts supply unit 120.
Then, when replacing the substrate 100, the component supply unit that is out of components is transferred to the spare stand 140 on which the new component supply unit for replacement was arranged, and the operator takes this component supply unit to another place. ing. In such a mounting machine, it is not necessary to stop the mounting machine to replace the component supply unit, and thus it is possible to prevent a decrease in operating rate.

[0004]

However, in the prior art, when a worker mistakenly sets a component supply unit different from the component supply unit to be replaced on the preliminary stand 140, the component supply unit is out of components. It is replaced as it is and component mounting is performed. Due to such component mounting, the board becomes a defective product such as a mounting error, but this defective product is first discovered in the inspection process after mounting. Therefore, it is necessary to correct the erroneously mounted board, replace the correct component supply unit, and perform other complications and processing, which causes a decrease in operating rate and a stop of the mounting line.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an automatic electronic component replacing device capable of improving the operating rate by preventing erroneous replacement due to human error made by an operator. To aim.

[0006]

SUMMARY OF THE INVENTION An electronic component automatic exchange apparatus according to the present invention is a storage unit for storing a component supply unit that holds a plurality of electronic components so that the electronic component can be supplied, and a component supply unit stored in the storage unit. And a storage unit provided in the component supply unit so that information about electronic components can be read and written, and the information disposed in the storage unit and the transport unit. Read / write means for reading / writing information about electronic parts from / to the storage part, and controlling the accommodating part and the conveying part so as to replace the part supply unit based on the information from the read / write part. And a control unit.

[0007]

In the above structure, information about electronic parts such as the part name and quantity is written in the information storage section of the parts supply unit, and the reading / writing means of the storage section and the transport section relates to the electronic parts from this information storage section. Read information. On the basis of this information, the control unit controls the storage unit and the transport unit when replacing the component supply unit, so that erroneous replacement can be prevented.

[0008]

First Embodiment FIG. 1 shows an electronic component automatic mounting machine to which a first embodiment of the present invention is applied. In this embodiment, the tape feeder 1 shown in FIG. 2 is used as the component supply unit. In this tape feeder 1, electronic components are attached to a tape of a tape reel 12, and the tape is wound by a take-up reel 14 to sequentially and repeatedly supply electronic components. Reference numeral 13 is a rack provided on the bottom of the tape feeder 1, and 5 is a data carrier provided on the lower side surface of the tape feeder 1 as an information storage unit for reading and writing information regarding electronic components.

As shown in FIG. 1, the electronic component automatic mounting machine is
The tape feeder 1 includes a component supply unit 11 in which a plurality of tape feeders 1 are arranged and a mounting device 10 that mounts electronic components on a substrate 9. The electronic component automatic replacement device of this embodiment is a replacement side (components) of the tape feeder 1 in this mounting machine. It is disposed on the supply unit 11 side). This electronic component automatic exchanging device is for exchanging electronic components by using the tape feeder 1 as a unit for exchanging, and a plurality of storage units 2 (hereinafter referred to as "the tape feeders 1" that can be mounted in the component supply unit 11 are set in advance. , Stocker 2), and a transport unit 3 that moves in the XY direction between the stocker 2 and the component supply unit 11 to transport the tape feeder 1 to the stocker 2 and the component supply unit 11, and these. And a control unit 4 (see FIG. 3) for controlling the operation of.

In the conveying section 3, with guide rails 21 for slidably holding the tape feeder 1 at both ends facing the component supply section 11 and the stocker 2, the width direction of the component supply section 11 and the stocker 2 will be described. It is provided so as to be movable in the following (X direction). The guide rail 21 is divided into three in the length direction (hereinafter, Y direction), and a pinion (not shown) that meshes with the rack 13 attached to the tape feeder 1 is embedded in each divided portion. Each pinion is connected to a pinion drive motor 23 that rotates. The pinion drive motor 23 is provided so as to move together with the movement of the guide rail 21 in the X direction, and the tape feeder 1 is conveyed in the Y direction by driving the pinion drive motor 23. A chuck 24 a that holds the tape feeder 1 of the stocker 2 and a chuck 24 b that transfers the tape feeder 1 held by the guide rail 21 to the component supply unit 11 are provided at both ends of the guide rail 21. . In this case, the chuck 24a
Mounts the tape feeder 1 held on the guide rail 21 on the stocker 2, while the chuck 24b mounts on the component supply unit 1.
It also works as if gripping one tape feeder 1. The chucks 24a and 24b are provided so as to be movable in the Y direction by the first driving portions 25a and 25b, respectively, and are advanced on the guide rail 21 and retracted from the guide rail 21 by the second driving portions 26a and 26b. Has become. These first drive units 25a, 25b
A cylinder is used for the second drive portions 26a and 26b, and the second drive portions 26a and 26b are provided so as to move integrally with the movement of the guide rail 21 in the X direction. Guide rail 21
A ball screw 27a and a guide 29 are arranged in the X direction of the drive motor 28 for driving the ball screw 27a.
It is connected to a. The lower portion of the guide rail 21 is screwed into the ball screw 27a and the guide 29, and is moved in the X direction by the rotation of the ball screw 27a.

The tape feeder 1 has a guide rail 2
A carrier head 6b as a read / write means is arranged in the transport section 3 to read and write information of electronic parts to the data carrier 5 when passing through 1. FIG. 4 shows the arrangement of the carrier head 6b. The carrier head 6 is provided between the chucks 24a and 24b with its head portion facing the guide rail 21.

The stocker 2 is divided into upper and lower two stages, and the tape carrier 1 is stored in each divided portion. A guide 30 and a ball screw 27b are vertically arranged on the side surface of the stocker 2, and the ball screw 27b is connected to the drive motor 28.
It is directly connected to b. Stocker 2 has this ball screw 27
The ball screw 27b is screwed to move in the up-down direction (Z direction), whereby the upper and lower stages of the stocker 2 are switched according to the position of the guide rail 21 of the transport unit 3. The stocker 2 is provided with a carrier head 6a as a read / write means for writing and writing information of electronic parts to the data carrier 5 when the tape carrier 1 is stored.

FIG. 3 is a block diagram of the control system of this embodiment, in which a control signal is sent from the control unit 4 to the controller 40 and a response signal is output from the controller 40 to the control unit 4. The carrier heads 6a and 6b write and read information of electronic components to and from the data carrier 5 of the tape carrier 1, and output this information to the controller 40. The controller 40 sends the control signal of the control unit 4 to the carrier heads 6a and 6b. Send out.

The operation of this embodiment will be described below. FIG. 5 shows a flow chart when the tape feeder 1 is stored in the stocker 2. First, the component information of the board to be mounted is read into the control unit 4 from CAD or the like. Based on this information, the worker attaches the taped electronic component to the tape feeder 1. The information (model name, remaining number) of the attached component is input, and the component information and the write signal are transferred from the control unit 4 to the controller 40. The carrier head 6a of the stocker 2 is connected to the data carrier 5 of the tape feeder 1.
Approach. The writing of information is completed by receiving the response signal, and the tape feeder 1 is stored in the designated location of the stocker 2. The above operation is repeated a required number of times to store the tape feeder 1 in the stocker 2.

FIG. 6 shows a flow chart of transfer from the stocker 2 to the storage / supply section 11. First, according to an instruction from the control unit 4, the stocker 2 is moved in the Z direction so that the tape feeder 1 in the stocker 2 to be conveyed to the component supply unit 11 can be held. At the same time, the guide rail 21 is moved in the X direction to a position where the designated tape feeder 1 stored in the stocker 2 can be gripped by the chuck 24a.
Then, the chuck 24a is moved to the stocker 2 side by the first driving unit 25a, and the tape feeder 1 is gripped. After that, the chuck 24a is moved to the component supply unit 11 side by the first drive unit 25a, and the tape feeder 1 is transferred to a position where the rack 13 of the tape feeder 1 and the pinion arranged on the guide rail 21 mesh with each other. Next, the second drive unit 26a is operated to retract the chuck 24a to a position where it does not hinder the movement of the tape feeder 1 on the guide rail 21, and then the pinion drive motor 23 is driven to rotate the pinion to move the rack 13 to the rack 13. The tape feeder 1 is moved along the guide rail 21 to the component supply unit 11 side in cooperation with the above.
Then, the tape feeder 1 is completely transferred to the guide rail 21, and is stopped at a position where the data carrier 5 of the tape feeder 1 faces the carrier head 6b.

At that position, the read signal is transferred from the control unit 4 to the controller 40. Based on this, the control unit 4 receives the response signal including the status. If the status is correct, it means that the information in the data carrier 5 has been read out normally, so the read-out information is collated with the information in the control unit 4. On the other hand, if the data carrier 5 does not exist in the reading area, the status is incorrect. In this case, the tape feeder 1 is repositioned, the read signal is transferred again, and the response signal is waited for.

As a result of collating the read information with the information in the control section 4, if they do not match, the operation is reversed to return to the stocker 2 and the operator is informed and the next tape feeder 1 is informed.
Take out. If they match, the parts supply unit 11
The guide rail 21 is moved to the designated position above.

After that, the pinion drive motor 23 is driven to rotate the pinion, and the tape feeder 1 is moved to the component supply section 11 side to a position where the rack 13 of the tape feeder 1 and the pinion disengage. The second drive unit 26b is operated to move the chuck 24a onto the guide rail 21, and then the first drive unit 25b is operated to press the tape feeder 1 toward the component supply unit 11 side by the chuck 24b. Is completely transferred to a predetermined position of the component supply unit 11. The designated tape feeders 1 are all positioned as described above. In these cases, if they do not match as a result of the collation and they remain in the stocker 2, they are replaced with the correct parts and then transferred to the part supply unit 11 in the same manner.

FIG. 7 is a flow chart for mounting electronic parts. When the mounting device 10 is operated and the remaining number of parts of any one of the tape feeders 1 on the part supply section 11 becomes zero,
The signal is sent to the control unit 4. When this signal is received, the tape feeder 1 is moved to the component supply unit 1 in the reverse operation.
Pull out from 1 onto the guide rail 21. Guide rail 2
In the middle of the conveyance on 1, the data carrier 5 of the tape feeder 1 is stopped at a position facing the carrier head 6b. Then, the remaining number information (here 0) calculated from the remaining number in the data carrier 5 and the number used by the mounting device 10 and the write signal are transferred from the control unit 4 to the controller 40. Based on this, the control unit 4 receives the response signal including the status. If the status is correct, it means that the remaining number information has been written. Therefore, the tape feeder 1 is transported to the empty stocker 2 and stored, and at the same time, the tape feeder 1 is stored in the stocker 2 using a display or the like (not shown). Notify the operator of the position. On the other hand, when there is no data carrier 5 in the write area, the status is incorrect, so the tape feeder 1 is repositioned, the remaining number information and the write signal are transferred again, and the response signal is waited for.

After storing the tape feeder 1 with the remaining number of parts 0 in the empty stocker 2, the attached tape feeder 1 of the same type stored in the stocker 2 is pulled out, and the remaining number 0
Parts feeder 11 that had been set in the tape feeder 1 of
Transfer to the top. The above operation is repeated to replace all the tape feeders 1 with 0 remaining parts.

FIG. 8 shows a flow chart for taking out the tape feeder 1, in which an operator reads 0 parts remaining from the stocker 2.
Remove the tape feeder 1 from. Then, the data clear information is input into the data carrier 5 and the control unit 4, and the information and the write signal are transferred from the control unit 4 to the controller 40. Then, the carrier head 6a near the stocker 2 is brought close to the data carrier 5 of the tape feeder 1. By receiving the response signal, the writing of information is completed, and the component is removed from the tape feeder 1. Similarly, remove all tape feeders 1 with 0 remaining parts from the stocker 2.

In this embodiment, the tape feeder 1 is used.
Since the information of the electronic component is written to the data carrier 5 and the carrier heads 6a and 6b read the information to control the exchange of the tape feeder, it is possible to surely prevent the wrong supply of the tape feeder.

[0023]

[Embodiment 2] FIG. 9 shows Embodiment 2 of the present invention, and Embodiment 1
The same elements as those in FIG. In this embodiment, the transport unit 3
Side carrier head 6b is provided on the stocker 2 side. As shown in FIG. 10, the carrier head 6b is integrally attached to the side of the guide rail 21 and the head 21 faces the stocker 2. On the other hand, in the tape carrier 1, as shown in FIG. 11, the data carrier 5 is arranged on the lower front side, and when housed in the stocker 2, the data carrier 5 faces the carrier head 6b. There is.

FIG. 12 is a flow chart for reading the information of the electronic component in this embodiment. Like the first embodiment, after the tape feeder 1 is stored in the stocker 2, the stocker 2 and the guide rail 21 are moved to move the carrier head. 6b stops at the position facing the data carrier 5 of the tape feeder 1 at the lower left end of the stocker 2. At that position, the read signal is transferred from the controller 4 to the controller 40. When the response signal is received, the reading of the information in the data carrier 5 is completed. After that, the tape carrier 1 of the next adjacent tape feeder 1 is moved to a position facing the data carrier 5 and the read signal is similarly transferred. The information in the data carrier 5 is read. The above operation is repeated for the required number of tape feeders stored in the stocker.

Then, the read information is collated with the information in the control section 4, and if they match, the designated tape feeder 1 is transferred from the stocker 2 to the component supply section 11.
If they do not match, the worker is notified of the stocker position using a display (not shown). As a result, the operator replaces the tape feeder 1 holding the correct component and then similarly reads the information from the data carrier 5 to verify the information. After all the tape feeders 1 holding the correct components are stored in the stocker 2, the designated tape feeder 1 is transferred from the stocker 2 to the component supply unit 11.

FIG. 13 is a flow chart for mounting, and when the mounting device 10 is operated and the number of parts of one of the tape feeders 1 on the parts supply section 11 becomes 0, the signal is sent to the control section 4. . Upon receiving this signal, the tape feeder 1 is stored in the empty position of the stocker 2 from the component supply unit 11, and at the same time, the operator is notified of the position of the stocker 2 using a display or the like (not shown). After storing in the empty stocker 2, the carrier head 6b and the remaining number of its parts are 0.
The guide rail 21 is moved so as to face the data carrier 5 of the tape feeder 1 and the remaining number information (0 here) calculated from the remaining number in the data carrier 5 and the number used by the mounting device 10 is written. The embedded signal is transferred from the control unit 4 to the controller 40. Upon reception of this response signal, the writing of the remaining number information is completed, and the tape feeder 1 to which the same type of components stored in the stocker 2 in advance is attached is transferred onto the component supply unit 11. Similarly, all the tape feeders 1 with 0 remaining components on the component supply unit 11 are stored in the empty stocker 2 and information is rewritten in the same manner. After that, stocker 2
The operator removes the tape feeder 1 with the remaining number of parts 0 stored again in. According to this embodiment, the information of the data carrier can be read without pulling out the tape feeder from the stocker, and there is an advantage that unnecessary operation is eliminated.

[0027]

Third Embodiment FIG. 14 shows a third embodiment of the present invention, in which a data carrier 5 is provided on the lower front side of the tape carrier 1, and the tape carrier 1 is arranged so that the data carrier 5 is located on the side of the transport section 3. It is stored in the stocker 2. A carrier head 6b for writing and reading information on the data carrier 5 of such a tape carrier is attached to the chuck 24a.

FIG. 15 shows a flow chart for reading information in this embodiment. After the tape feeder 1 is stored in the stocker 2 as in the first embodiment, the stocker 2 and the guide rail 21 are moved and conveyed onto the component supply unit 11. Chuck 24 to a position where the tape feeder 1 to be held can be gripped
Slide a to the stocker 2 side. Control unit 4 at that position
The read signal to the controller 40. By receiving the response signal, the reading of the information in the data carrier 5 is completed, and the read information is collated with the information in the control unit 4. If the verification results match, the parts are pulled out onto the guide rail 21 as they are, and the designated component supply unit 1
Reprinted on 1. On the other hand, if the collation results do not match, the operator is notified of the stocker position using a display or the like (not shown), and the data carrier 5 of the tape feeder 1 to be conveyed next is read. The above operation is repeated by the required number of tape feeders 1 stored in the stocker 2.

The operator replaces the tape feeder 1 left in the stocker 2 without being transferred with a correct component, and again collates the information in the data carrier 5 to mount it on the component supply unit 11.

The mounting device 10 is operated, the remaining number of components of any one of the tape feeders 1 on the component supply unit 11 becomes 0, and the signal is sent to the control unit 4. In response to this signal, the tape feeder 1 is taken out from the component supply unit 11 and pushed into the empty space of the stocker by the chuck 24a to be stored. At that time, the remaining number information (here, 0) calculated from the remaining number in the data carrier 5 and the number used by the mounting device 10 and the write signal are transferred from the control unit 4 to the controller 40. Upon reception of this response signal, the writing of the remaining number information is completed, and the tape feeder 1 to which the same type of components stored in the stocker 2 in advance is attached is transferred onto the component supply unit 11.
Similarly, all the tape feeders 1 with the remaining number of components 0 on the component supply unit 11 are stored in the empty space of the stocker 2 and the information is similarly rewritten (see FIG. 13). Then, the operator removes the tape feeder 1 having the remaining number of parts 0 returned to the stocker 2.

According to this embodiment, in addition to the effects of the first embodiment, the information of the data carrier can be read in a series of transfer operations without taking out the tape feeder from the stocker while it is stored in the stocker. There is an effect that can be.

[0032]

As described above, according to the present invention, it is possible to prevent erroneous supply of electronic components due to an operator's mistake, so that it is possible to prevent a decrease in operating rate.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a side view of the tape feeder.

FIG. 3 is a block diagram of a control system.

FIG. 4 is a partial perspective view of the first embodiment.

FIG. 5 is a flowchart of storing a tape feeder.

FIG. 6 is a flowchart for reading a data carrier.

FIG. 7 is a flowchart of transfer to a stocker.

FIG. 8 is a flowchart of tape feeder removal.

FIG. 9 is a perspective view of the second embodiment.

FIG. 10 is a partial perspective view of the second embodiment.

FIG. 11 is a side view of the tape carrier according to the second embodiment.

FIG. 12 is a flowchart for reading a data carrier.

FIG. 13 is a flowchart of transfer to a stocker.

FIG. 14 is a partial side view of the third embodiment.

FIG. 15 is a flowchart for reading a data carrier.

FIG. 16 is a perspective view of a conventional device.

[Explanation of Codes] 1 tape carrier 2 stocker 3 transport section 5 data carrier 6a carrier head 6b carrier head

Claims (1)

[Claims] 1. A storage unit that stores a component supply unit that holds a plurality of electronic components so that the electronic component can be supplied, a transport unit that transports and positions the component supply unit stored in the storage unit to a predetermined location, and an electronic unit. Reading and writing information about electronic components between an information storage unit provided in the component supply unit so that the information about the components can be read and written, and the information storage unit arranged in the storage unit and the transport unit. An electronic component comprising: a reading / writing unit for performing the above-described operation; and a control unit for controlling the storage unit and the conveyance unit so as to replace the component supply unit based on the information from the reading / writing unit. Automatic exchange device.