JP4539522B2 - Component supply method in electronic component mounting line - Google Patents

Description

The present invention relates to a component supply method in an electronic component mounting line that constitutes a plurality of electronic component mounting apparatuses that supply electronic components to a mounting head by a tape feeder arranged in a component supply unit in the electronic component mounting apparatus.

  As a method for supplying an electronic component to a mounting head in an electronic component mounting apparatus, a method using a tape feeder is known. In this method, a carrier tape holding an electronic component is pulled out from the tape reel and pitch-fed in synchronization with the mounting timing of the electronic component. When a part breakage occurs in the tape feeder during the mounting operation, a reel replacement operation is performed to replace the tape reel with a new one.

In this reel replacement operation, a so-called tape splicing method in which carrier tapes themselves are joined in recent years has been adopted (see, for example, Patent Document 1). According to this method, since the end portion of the already mounted carrier tape and the beginning portion of the new carrier tape are joined, the head for performing tape alignment by attaching the beginning portion of the new tape to the tape feeder. The dispensing work can be omitted. Thereby, there is an advantage that it is possible to save a dead time due to stopping the mounting device each time when a component cut occurs.
JP 2003-218586 A

  In one electronic component mounting apparatus, various types of electronic components are to be mounted. Of these electronic components, what is supplied by a tape feeder is often supplied by a tape reel of the same standard. Therefore, in the above-mentioned tape splicing operation, a carrier tape containing different types of components is mistakenly joined. Mistakes may occur. If the electronic component is supplied without detecting such an operation error, an erroneous mounting in which the electronic component is mistakenly mounted on the board occurs. Conventionally, there has been no means for reliably preventing erroneous mounting caused by component mis-mixing in such tape splicing work.

SUMMARY OF THE INVENTION An object of the present invention is to provide a component supply method in an electronic component mounting line that constitutes a plurality of electronic component mounting apparatuses that can reliably prevent erroneous mounting due to component mistakes in tape splicing work.

The component supply method in the electronic component mounting line of the present invention is arranged in the component supply unit in the electronic component mounting line constituting a plurality of electronic component mounting apparatuses that take out the electronic component from the component supply unit by the mounting head and mount it on the substrate. This is a component supply method in an electronic component mounting line that constitutes a plurality of electronic component mounting apparatuses that supply electronic components to a pickup position by the mounting head by pitch-feeding a carrier tape holding electronic components by a tape feeder that has been manufactured. Te, when work supplying tape reel in the tape feeder is performed by a machine operator in the component supply unit, and performing component matching for reading a bar code label indicating the part information attached to the tape reel, the parts verification information acquired by the step of performing the part matching By entering this component verification information to component matching system to be provided to the electronic component mounting line, and transfers the part matching information to the electronic component mounting line side from the part matching system, supplied to the component supply unit parts in which the carrier tape is stored in the part matching information storage unit for the component verification information whether the carrier tape is attached to the electronic component mounting apparatus corresponding to a normal component to be supplied for carrier tapes In a collation information storing step, a tape splicing operation step for joining a carrier tape already mounted in the tape feeder and a newly supplied carrier tape, and a tape feeding step for feeding electronic components by pitch feeding the carrier tape The seam part joined by the tape splicing work The process of detecting the joint part and the part verification information storage unit in response to the detection of the joint part and confirming the presence or absence of part verification information for the newly supplied carrier tape, and a determining component verification determining step success or failure, takes in to parts collating information acquired by the step of performing the part matching the existing the component matching system which the user has already been operated on the electronic component mounting line, the seam In response to the detection of the part, the correctness of the component verification is determined based on the component verification information.

According to the present invention, component verification information storage in which the carrier tape for a carrier tape which is fed to the component supply unit is attached to whether the part matching information whether the carrier tape corresponding to the regular part to the electronic component mounting apparatus In the tape feeding process, the detection of the seam part joined by the tape splicing work is received, the part verification information storage unit is referenced, and the presence or absence of the part verification information for the newly supplied carrier tape is confirmed. The part verification information obtained by the process of performing part verification from the existing part verification system that the user has already operated is imported to the electronic component mounting line, and the detection of the seam part is accepted. by determining the correctness of the part matching Te this component verification information, the tape splicing work It is possible to reliably prevent erroneous mounting due to goods misidentification.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a partial cross-sectional view of the electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is an explanatory diagram of tape splicing in the tape feeder according to one embodiment of the present invention, and FIG. 5 is an explanatory diagram of a carrier tape seam detecting means in the tape feeder according to one embodiment of the present invention. FIG. 6 is a block diagram showing the configuration of the control system of the electronic component mounting system according to the embodiment of the present invention, and FIG. 7 is a flowchart of the component verification check process in the component supply method according to the embodiment of the present invention. .

  First, the structure of an electronic component mounting apparatus (hereinafter abbreviated as “mounting machine”) will be described with reference to FIGS. FIG. 2 partially shows an AA cross section in FIG. By connecting a plurality of the mounting machines M, a mounting line for producing a mounting board is configured. The mounting control unit of each mounting machine is connected to a management computer (mounting line management system) by a LAN system so that a plurality of mounting machines M can be centrally controlled by the management computer.

  In FIG. 1, a transport path 2 is disposed in the center of the base 1 in the X direction (substrate transport direction). The conveyance path 2 conveys the substrate 3 carried in from the upstream side and positions it on the mounting stage. On both sides of the conveyance path 2, component supply units 4 are arranged, and each component supply unit 4 has a plurality of tape feeders 5 arranged in parallel. The tape feeder 5 feeds an electronic component to a component suction position by a suction nozzle of a mounting head described below by pitch-feeding a carrier tape holding the electronic component.

  Y-axis tables 6A and 6B are disposed on both ends of the upper surface of the base 1, and two X-axis tables 7A and 7B are installed on the Y-axis tables 6A and 6B. By driving the Y-axis table 6A, the X-axis table 7A moves horizontally in the Y direction, and by driving the Y-axis table 6B, the X-axis table 7B moves horizontally in the Y direction. Mounted on the X-axis tables 7A and 7B are a mounting head 8 and a substrate recognition camera 9 that moves integrally with the mounting head 8, respectively.

  By driving the Y-axis table 6A, the X-axis table 7A, the Y-axis table 6B, and the X-axis table 7B in combination, the mounting head 8 moves horizontally, and the electronic components are picked up from the respective component supply units 4 by suction nozzles 8a (see FIG. 2) and mounted on the substrate 3 positioned in the transport path 2. The Y-axis table 6A, the X-axis table 7A, the Y-axis table 6B, and the X-axis table 7B serve as a head moving mechanism that moves the mounting head 8.

The substrate recognition camera 9 that has moved onto the substrate 3 captures and recognizes the substrate 3. In addition, a component recognition camera 10 and a nozzle holding unit 11 are disposed on the route from the component supply unit 4 to the conveyance path 2. When the mounting head 8 that has taken out the electronic component from the component supply unit 4 moves to the substrate 3 positioned on the mounting stage, the electronic component held by the suction nozzle 8 a is moved in the X direction above the component recognition camera 10. Thus, the component recognition camera 10 images the electronic component held by the suction nozzle 8a.

  The imaging result is recognized by a recognition processing unit (not shown), whereby the position of the electronic component held in the suction nozzle 8a is recognized and the type of the electronic component is identified. The nozzle holding unit 11 stores a plurality of types of suction nozzles 8a in a predetermined posture, and the mounting head 8 accesses the nozzle holding unit 11 to perform a nozzle replacement operation. The nozzle is replaced according to the above.

  The structure of the component supply unit 4 will be described. As shown in FIG. 2, the component supply unit 4 is provided with a feeder base 4 a for mounting a plurality of tape feeders 5. The tape feeder 5 is arranged in the component supply unit 4 by a feeder mounting carriage 12. The carriage 12 is provided with a reel holding portion 13 for holding a tape reel 14 in which a carrier tape 15 is stored in a wound state. The reel holding unit 13 includes a holding roller for rotatably holding the tape reel 14, and the carrier tape 15 can be pulled out by rotating the tape reel 14 arranged in the component supply unit 4. It has become.

  Next, the function of the tape feeder 5 will be described with reference to FIG. As shown in FIG. 3, the frame member 5a attached to the feeder base 4a is provided with a tape traveling path 5b on which the carrier tape 15 travels. An electronic component P is held in a component pocket 16 a that is a concave portion for storing components formed on the carrier tape 15 at a constant pitch, and the top surface of the component pocket 16 a is covered with a top tape 17.

  The carrier tape 15 pulled out from the tape reel 14 is introduced from the rear end of the frame member 5a, and is sent to the downstream side (right side in FIG. 3) along the upper surface of the tape running path 5b. If the carrier tape 15 wound around the supply reel 14 is consumed in the component supply operation for continuously supplying electronic components while pitch-feeding the carrier tape 15, the carrier tape 15 already mounted on the tape feeder 5 is consumed. The splicing is performed to join the head portion of the newly mounted carrier tape 15 </ b> A via the joint portion J at the end portion of.

  A sprocket 21 driven by the rotation drive mechanism 20 is disposed at the upper part of the downstream end of the frame member 5a. The sprocket 21 is provided with a feed pin 21a (see FIG. 5) that fits into a tape feed hole 16b (see FIG. 4) provided in the carrier tape 15 at a constant pitch, and the sprocket 21 is rotated by the rotary drive mechanism 20. By driving, the sprocket 21 rotates, whereby the carrier tape 15 is fed in the downstream direction.

  The front side of the sprocket 21 is a component suction position where the electronic component P in the component pocket 16a is sucked and picked up by the suction nozzle 8a of the mounting head 8. The sprocket 21 and the rotational drive mechanism 20 become a tape feeding mechanism that feeds the electronic component P held on the carrier tape 15 to the component suction position by the suction nozzle 8a by pitch-feeding the carrier tape along the tape running path 5b. ing.

On the upper surface of the downstream portion of the frame member 5a, an upper guide portion 18 for covering and guiding the upper portion of the carrier tape 15 in the vicinity of the component suction position is disposed. The upper guide portion 18 is provided with a suction opening 18 a, and the downstream end of the suction opening 18 a is a top tape peeling portion for peeling the top tape 17. That is, in the process in which the carrier tape 15 travels below the upper guide portion 18, the top tape 17 is peeled off by the top tape peeling portion and folded back upstream. The electronic component P is picked up by the suction nozzle 8a from the component pocket 16a exposed by peeling off the top tape. The folded top tape 17 is fed into the tape collecting unit 5c by the top tape feeding mechanism 22 and collected.

  Next, tape splicing will be described with reference to FIG. As shown in FIG. 4A, in the tape splicing, the end of the carrier tape 15 already attached to the tape feeder 5 and the beginning of the newly attached carrier tape 15A pass through a butt line E. And joined together. Splicing tapes 28 and 29 are affixed from both the upper and lower sides at positions covering the component pocket 16a and the feed hole 16b, respectively, in the tape affixing margin where the butt line E is sandwiched in the base tape 16. Thus, as shown in FIG. 5B, the two carrier tapes 15 and 15A become one continuous carrier tape by the joint portion J.

  The splice tape 29 is provided with a slit 29a in the longitudinal direction, and when the feed pin 21a of the sprocket 21 is fitted into the feed hole 16b from below, the feed pin 21a can protrude upward through the slit 29a. It is designed so that there is no problem with tape feeding. 4A shows a state in which the top tape 17 is peeled off from the base tape 16, the splicing tape 28 is attached from the upper side of the top tape 17 in the tape splicing. This tape splicing work is performed using a dedicated jig, and the two carriers are set so that the pitch p * between the two component pockets 16a sandwiching the butt line E is equal to the predetermined pitch p of the base tape 16. The alignment of the tapes 15 and 15A is performed.

  Next, seam detection means for detecting the seam portion J in the tape feeding process of the carrier tape 15 will be described with reference to FIG. Fig.5 (a) has shown the top view of the upper guide part 18 provided in the front-end | tip part of the frame member 5a. A component pocket 16a is exposed in a suction opening 18a provided in the upper guide 18 corresponding to a pickup position by the nozzle 8a. The feed pin 21a of the sprocket 21 is engaged with the feed hole 16b on the downstream side of the suction opening 18a. A groove portion 18c for releasing the feed pin 21a is provided at a position corresponding to the sprocket 21 in the upper guide portion 18, so that the feed pin 21a protruding from the feed hole 16b to the upper surface side does not interfere with the upper guide portion 18. It has become.

An opening 18b for joint detection is provided at a position corresponding to the upper side of the feed hole 16b in the upper guide 18 at a position separated from the suction opening 18a on the upstream side. As shown in FIG. 5B, a joint detection sensor 30 that is a reflection type optical sensor is inserted from below in a position corresponding to the opening 18b in the frame member 5a, and detection from the joint detection sensor 30 is performed. The signal is sent to the seam detection unit 36 (FIG. 6), and the seam detection unit 36 is intended to detect the seam J in the carrier tape 15 based on the detection signal of the seam detection sensor 30.

  That is, when the normal portion of the carrier tape 15 passes above the joint detection sensor 30, the light from the joint detection sensor 30 is emitted at the timing when the feed hole 16b is located between the sensor 30 and the opening 18b. It passes through the feed hole 16b and the opening 18b upward. At this timing, the joint detection sensor 30 does not detect the reflected light, and a signal indicating that the feed hole 16b has been detected is sent. The feed hole detection signal is repeatedly output at intervals corresponding to the feed hole pitch, whereby the joint detection unit 36 determines that there is no joint.

On the other hand, as shown in FIG. 5B, when the joint portion J in which the feed hole 16b is closed by the splice tape 29 passes above the joint detection sensor 30, the splice tape 29 is adhered. Regarding the range, the light from the joint detection sensor 30 is reflected by the splice tape 29 and the feed hole 16b is not detected. Then, when the feed hole non-detection state continues for a predetermined time, the joint detection unit 36 detects that the joint J passes through the position of the joint detection sensor 30. Accordingly, the seam detection sensor 30 and the seam detection unit 36 serve as a seam detection unit that detects that the seam J has reached a predetermined position upstream of the pickup position.

  Next, the configuration of the control system of the electronic component mounting line having a configuration in which a plurality of mounting machines M are collectively controlled by a management computer will be described with reference to FIG. In FIG. 6, only the part relevant to the component verification function when supplying the carrier tape 15 to the tape feeder 5 arranged in the component supply unit 4 is described.

  In FIG. 6, a component verification system 31 is a terminal function of a material management system that is uniquely owned by the user of the mounting line. Here, the correctness of electronic components supplied to the component supply unit 4 of the mounting machine M is verified. It has a function of providing component verification information to the mounting line. For the mounting machine M, parts are supplied in the form of transfer of a tape reel on which a carrier tape holding an electronic part is wound and stored, and therefore, part verification is performed on part information (for example, the actual tape reel) This is performed by reading a part type, a part lot number, and the like with a barcode label) and collating them with a parts table.

  In the present embodiment, component verification is performed when a tape reel is mounted on the tape feeder 5 arranged in the component supply unit 4 of the mounting machine M. That is, the machine operator performs an operation of reading the barcode from the tape reel by the barcode reader and inputting it to the terminal of the component verification system 31 every time the tape reel is mounted. As a result, the component verification system 31 determines whether or not the carrier tape stored in these tape reels is a correct carrier tape holding a regular component. If the determination result is OK, a code indicating that component verification has been completed is input and stored for each feeder mounting address in each component supply unit 4 of each mounting machine M.

  The component verification system 31 is connected to a management computer 33 that constitutes a mounting line management system 32. The management computer 33 includes a component verification information receiving unit 33a, a component verification information storage unit 33b, and a component verification confirmation unit 33c. The management computer 33 receives and stores the above-described component verification information, and further performs component verification in the mounting operation by the mounting machine M. It has a function to confirm information. That is, the component verification information receiving unit 33a receives the component verification information from the component verification system 31, and the received component verification information is stored in the component verification information storage unit 33b. And the component collation confirmation part 33c performs the process which confirms component collation information in mounting operation | movement so that it may mention later.

  The management computer 33 is connected to a mounting machine control unit 34 that is a control device of each mounting machine M via a LAN system. The mounting machine control unit 34 controls the feeder driving unit 35 to drive the tape feeder 5 to rotate. The operation of the mechanism 20 is controlled. The seam detection result detected by the seam detection unit 36 receiving the signal detected by the seam detection sensor 30 is sent to the mounting machine control unit 34.

  Instead of attaching the component verification information receiving unit 33a, the component verification information storage unit 33b, and the component verification checking unit 33c to the management computer 33, the component matching information receiving unit 33a, You may make it give the function of the components collation information storage part 33b and the component collation confirmation part 33c. That is, in the present embodiment, the component matching information storage unit 33b may be directly attached to each mounting machine M, or may be indirectly attached via the management computer 33. .

The electronic component mounting line is configured as described above. Next, in the component supply method of the mounting machine M configuring the mounting line, component information confirmation processing executed in connection with the splicing operation will be described with reference to FIG. Will be described with reference to FIG.

  First, when the machine operator performs an operation of supplying the tape reel 14 to the tape feeder 5 in the component supply unit 4, component verification for reading the barcode label attached to the tape reel 14 is performed (ST1). The acquired component verification information is input to the component verification system 31, and the component verification information is further transferred from the component verification system 31 to the mounting line side (ST2). The transferred component verification information is received by the component verification information receiving unit 33a and stored by the component verification information receiving unit 33a.

  Thereby, data indicating whether or not the components have been verified is stored for each feeder mounting address in each component supply unit 4 of each mounting machine M. That is, for the carrier tape 15 supplied to the component supply unit 4, collation information as to whether the carrier tape 15 is a carrier tape 15 corresponding to a regular component to be supplied is attached to the mounting machine M. The information is stored in the component verification information storage unit 33b of the management computer 33 (component verification information storage step).

  Then, in each mounting machine M, it is detected that the remaining tape on the already mounted tape reel 14 has become a predetermined amount or less during the mounting operation in which the electronic component is taken out from the tape feeder 4 by the mounting head 8 and mounted on the substrate 3. Each time, a tape splicing for splicing an already mounted carrier tape and a newly supplied carrier tape is performed in the tape feeder 5 (splicing operation step) (ST3).

  Thereafter, the mounting operation is continuously repeated, and the joint portion J joined by the tape splicing operation is detected in the tape feeding process in which the carrier tape 7 is pitch-fed to supply the electronic components (seam portion detection step) (ST4). ). In response to detection of the joint portion J, the component verification check unit 33c performs component verification check (component verification check process) (ST5). Here, the component collation information storage unit 33a is referred to, and it is confirmed whether or not the component collation information for the carrier tape 15A newly supplied to the feeder mounting address has already been written.

  Based on the result of the component verification, it is determined whether or not the component verification is correctly performed in the tape feeder 5 (whether the component verification information is correctly written) (ST6). That is, in (ST5) and (ST6), by detecting the joint portion J and referring to the component verification information storage unit 33a, by confirming the presence or absence of component verification information for the newly supplied carrier tape 15A Then, it is determined whether or not the component verification is correct (component verification determination step).

  If it is confirmed that the component verification is OK in (ST6), it is determined that the correct regular component is supplied by the new carrier tape 15A, and the mounting operation by the mounting head 8 is continued (ST7). On the other hand, if it is determined in (ST6) that the component verification is not performed correctly, it is determined that there is a possibility that an unauthorized part is supplied, and the apparatus is stopped (ST8). There is a warning notification (ST9). Upon receiving this notification, the machine operator immediately checks the actual tape reel with the tape feeder to which the warning has been issued, and finally checks the correctness of the parts.

As described above, the component supply method in the electronic component mounting line shown in the present embodiment determines whether the carrier tape is a carrier tape corresponding to a regular component for the carrier tape supplied to the component supply unit. The collation information is stored in the component collation information storage unit attached to the electronic component mounting apparatus, the seam portion joined by the tape splicing work is detected in the tape feeding process, and the component collation information storage unit is referred to. The presence / absence of component verification information for the carrier tape supplied to the printer is confirmed.

  As a result, when many types of electronic components are supplied by a tape reel of the same standard, even when an operation error occurs in which a carrier tape containing different types of components is erroneously joined in the tape splicing operation, It is possible to reliably prevent mismounting of electronic components that are mistakenly mounted on the board. The configuration of the present invention is useful when the component verification information is taken into the mounting line from the existing component verification system that the user has already operated, and the component verification check is performed during the component supply operation using this component verification information. .

The component supply method in the electronic component mounting line of the present invention has the effect of reliably preventing erroneous mounting due to component misconception in the tape splicing operation, and takes out the electronic component from the tape feeder of the component supply unit. This is useful for a component supply method for supplying to a mounting head.

The top view of the electronic component mounting apparatus of one embodiment of this invention The fragmentary sectional view of the electronic component mounting device of one embodiment of the present invention Structure explanatory drawing of the tape feeder of one embodiment of this invention Explanatory drawing of the tape splicing in the tape feeder of one embodiment of this invention Explanatory drawing of the joint detection means of the carrier tape in the tape feeder of one embodiment of this invention The block diagram which shows the structure of the control system of the electronic component mounting system of one embodiment of this invention Flow chart of component verification check processing in component supply method of one embodiment of the present invention

Explanation of symbols

3 Substrate 4 Component supply section 5 Tape feeder 8 Mounting head 15, 15A Carrier tape J Joint section

Claims (1)

In an electronic component mounting line constituting a plurality of electronic component mounting apparatuses that take out an electronic component from a component supply unit by a mounting head and mount it on a substrate, a carrier tape holding the electronic component by a tape feeder arranged in the component supply unit A component supply method in an electronic component mounting line constituting a plurality of electronic component mounting apparatuses for supplying electronic components to a pickup position by the mounting head by pitch feeding,
When performing an operation of supplying a tape reel to a tape feeder by a machine operator in the component supply unit, a step of performing component verification that reads a barcode label that displays component information attached to the tape reel; and
Parts verification information acquired by the step of performing the part matching enter this part matching information in the component checking system to be provided to the electronic component mounting line, the from the component checking system to the electronic component mounting line side by transferring the part matching information, the carrier tape whether the carrier tape is a carrier tape that corresponds to the normal of the part to be supplied the said component verification information electronic component supplied to the component supply unit A component verification information storage step stored in a component verification information storage unit attached to the mounting apparatus, a tape splicing operation step of joining an already mounted carrier tape and a newly supplied carrier tape in the tape feeder, and the carrier In the tape feeding process for feeding electronic components by pitch feeding the tape, A seam part detecting step for detecting a seam part joined by the splicing operation, and referring to the part collation information storage unit in response to the detection of the seam part, the part collation information of the newly supplied carrier tape Including a component verification determination step of determining whether the component verification is correct or not by confirming the presence or absence,
Captures have been part matching information obtained from an existing the component checking system in the step of performing the part matching the user has already been operated on the electronic component mounting line,
A component supply method in an electronic component mounting line constituting a plurality of electronic component mounting apparatuses, wherein detection of the joint portion is received and whether or not the component verification is correct is determined based on the component verification information.

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