WO2017130372A1 - 電子部品実装機および生産ライン - Google Patents
電子部品実装機および生産ライン Download PDFInfo
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- WO2017130372A1 WO2017130372A1 PCT/JP2016/052623 JP2016052623W WO2017130372A1 WO 2017130372 A1 WO2017130372 A1 WO 2017130372A1 JP 2016052623 W JP2016052623 W JP 2016052623W WO 2017130372 A1 WO2017130372 A1 WO 2017130372A1
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- electronic component
- solder
- mark
- reference mark
- substrate
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/046—Surface mounting
- H05K13/0465—Surface mounting by soldering
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0812—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0815—Controlling of component placement on the substrate during or after manufacturing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0817—Monitoring of soldering processes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/0882—Control systems for mounting machines or assembly lines, e.g. centralized control, remote links, programming of apparatus and processes as such
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30141—Printed circuit board [PCB]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/083—Quality monitoring using results from monitoring devices, e.g. feedback loops
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/163—Monitoring a manufacturing process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/165—Stabilizing, e.g. temperature stabilization
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/166—Alignment or registration; Control of registration
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3485—Applying solder paste, slurry or powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49004—Electrical device making including measuring or testing of device or component part
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
Definitions
- the present invention relates to an electronic component mounting machine for mounting electronic components on a substrate, and a production line in which a plurality of electronic component mounting machines are juxtaposed.
- the wiring pattern is printed on the board.
- a solder portion is printed on the land portion of the wiring pattern.
- an electronic component mounting machine may determine a mounting position of an electronic component based on a solder mark (solder part). In this case, even if the solder portion is printed out of alignment with the land portion, the electronic component is mounted at a regular position with respect to the solder portion. At the time of reflow, the electronic component flows toward the center of the land portion together with the molten solder portion. Therefore, after reflow, as a result, the electronic component can be mounted at a proper position. As described above, when the mounting position of the electronic component is determined based on the solder mark, the electronic component can be mounted at a regular position using the self-alignment effect of the solder portion.
- the electronic component mounting machine may not be able to read the solder mark due to defective printing of the solder mark.
- the mounting position of the electronic component cannot be determined based on the solder mark. Therefore, conventionally, when the electronic component mounting machine cannot automatically read a solder mark, an operator manually identifies a solder mark with a printing defect while looking at an image of the board. Then, the mounting position of the electronic component is determined based on the solder mark. However, in this case, when the skill level of the worker is low, the mounting accuracy of the electronic component is lowered.
- a solder portion having a shape similar to the solder mark may be printed on the substrate adjacent to the poorly printed solder mark.
- an object of this invention is to provide the electronic component mounting machine and production line with high mounting accuracy of an electronic component.
- an electronic component mounting machine captures an image of a sub-reference mark arranged on a board and a main reference mark whose imaging position is determined with reference to the sub-reference mark.
- the main reference mark can be read from the image captured by the imaging device
- the mounting position of the electronic component on the substrate is determined with reference to the main reference mark, and the image is caused by the printing defect of the main reference mark.
- a control device that determines the mounting position based on the sub-reference mark that is a reference source of the main reference mark when the main reference mark cannot be read from the main reference mark.
- the “printing defect” is a defect related to a problem during printing of the main reference mark, such as fading, chipping, blurring or distortion.
- the production line of the present invention is a production line in which a plurality of the electronic component mounting machines are juxtaposed from the upstream side to the downstream side in the transport direction of the substrate,
- the control device of the electronic component mounter at the upstream end in the transport direction sends information on the main reference mark that cannot be read to the electronic component mounter at the downstream side in the transport direction. And transmitting.
- the mounting position of the electronic component can be determined based on the main reference mark in principle and exceptionally based on the sub reference mark. That is, if the main reference mark cannot be read, the control device automatically uses the sub-reference mark that is the reference source of the main reference mark as a reference, and the electronic component (specifically, the main reference mark that cannot be read as a reference). The mounting position of the electronic component whose mounting position is determined is determined. For this reason, even if the main reference mark cannot be read, the production of the substrate can be automatically continued.
- the electronic component mounting machine of the present invention even if the control device cannot read the main reference mark from the image, the operator's manual work (work for identifying the main reference mark with printing defects while viewing the image) Does not intervene. For this reason, the mounting accuracy of electronic components is high.
- the electronic component mounting machine on the downstream side in the transport direction can recognize the unreadable main reference mark by transmitting information from the electronic component mounting machine on the upstream end in the transport direction. For this reason, the electronic component mounting machine on the downstream side in the transport direction can skip reading of the unreadable main reference mark. Therefore, it is possible to reduce the number of mark reading steps in the electronic component mounting machine on the downstream side in the transport direction.
- FIG. 1 is a schematic diagram of a production line according to an embodiment of the present invention.
- FIG. 2 is a top view of the electronic component mounting machine according to the embodiment of the present invention.
- FIG. 3A is a top view of the substrate before the solder printer is loaded.
- FIG. 3B is a top view of the substrate after the solder printer is carried out.
- FIG. 3C is a top view of the substrate after carrying out the electronic component mounting machine.
- FIG. 3D is a top view of the substrate after carrying out the reflow furnace.
- FIG. 4 is a flowchart of the mounting position determination method.
- FIG. 5A is a top view of the substrate after the solder printer is carried out.
- FIG. 5B is a top view of the substrate after carrying out the electronic component mounting machine at the upstream end in the carrying direction.
- FIG. 6 is a skip necessity inquiry screen.
- FIG. 1 the schematic diagram of the production line of this embodiment is shown.
- the production line 1 includes a solder printer 3, a solder print inspection machine 4, and a plurality of electronic component mounting machines from the left side (upstream in the transport direction) to the right side (downstream in the transport direction). 5, a reflow furnace 6, and a substrate appearance inspection machine 7. These devices are communicably connected.
- FIG. 2 shows a top view of the electronic component mounting machine of the present embodiment.
- the structure of the some electronic component mounting machine 5 is the same.
- the electronic component mounting machine 5 includes a control device 50, a component supply device 51, a board transfer device 52, a pair of upper and lower X-axis guide rails 53, an X-axis slide 54, A pair of left and right Y-axis guide rails 55, a Y-axis slide 56, and a mounting head 57 are provided.
- the component supply device 51 includes a large number of tapes 510.
- the tape 510 accommodates electronic components.
- the substrate transfer device 52 includes a pair of front and rear conveyor belts 520.
- the substrate 8 is conveyed from the left side to the right side by a pair of front and rear conveyor belts 520.
- the pair of left and right Y-axis guide rails 55 are disposed on the upper wall of the housing (not shown) of the electronic component mounting machine 5.
- the Y-axis slide 56 is attached to a pair of left and right Y-axis guide rails 55 so as to be slidable in the front-rear direction.
- the pair of upper and lower X-axis guide rails 53 are disposed on the Y-axis slide 56.
- the X-axis slide 54 is attached to a pair of upper and lower X-axis guide rails 53 so as to be slidable in the left-right direction.
- the mounting head 57 is attached to the X-axis slide 54. For this reason, the mounting head 57 is movable back and forth and left and right.
- the mounting head 57 includes a suction nozzle 570 and an imaging device 571.
- the suction nozzle 570 can carry electronic components from the component supply device 51 to the substrate 8.
- the imaging device 571 is a CCD (Charge-Coupled Device) camera.
- the imaging device 571 can image the upper surface of the substrate 8.
- the control device 50 includes a communication control circuit 500, an input / output interface 501, a computer 502, an image processing device 503, and a display device 505.
- the input / output interface 501 is connected to the communication control circuit 500, the computer 502, the image processing device 503, and the display device 505.
- the communication control circuit 500 is connected to other devices constituting the production line 1.
- the computer 502 includes a calculation unit 502a and a storage unit 502b.
- the storage unit 502b stores in advance data related to a wiring pattern, a board mark, a solder part, a solder mark, the position and shape of an electronic component, which will be described later.
- the image processing device 503 is connected to the imaging device 571.
- the display device 505 is a touch screen (not shown). The worker can visually recognize information displayed on the display device 505. In addition, the worker can input an instruction to the display device 505.
- FIG. 3A shows a top view of the substrate before carrying in the solder printer.
- FIG. 3B shows a top view of the substrate after the solder printer is carried out.
- FIG. 3C shows a top view of the substrate after the electronic component mounting machine is carried out.
- FIG. 3D shows a top view of the substrate after carrying out the reflow furnace.
- FIGS. 3B to 3D show a case where the printing state of the solder portion 82 in the solder printer 3 shown in FIG. 1 is good.
- a plurality of wiring patterns 80 and a plurality of substrate marks F1 to F3 are already printed on the substrate 8 before being carried into the solder printer 3 shown in FIG. Yes.
- the wiring pattern 80 includes a land portion 800.
- the plurality of wiring patterns 80 and the plurality of substrate marks F1 to F3 are printed simultaneously. For this reason, the plurality of wiring patterns 80 and the plurality of substrate marks F1 to F3 are arranged in the same coordinate system.
- a plurality of solder portions 82 are printed on the substrate 8 after being unloaded from the solder printer 3 shown in FIG.
- the predetermined solder portion 82 is used as the solder marks f1 to f4.
- the plurality of solder portions 82 are simultaneously printed by the same screen mask. Therefore, the plurality of solder portions 82 and the plurality of solder marks f1 to f4 are arranged in the same coordinate system.
- the solder portion 82 (including the solder marks f1 to f4) is printed out of alignment with the land portion 800. However, the printed state of all the solder marks f1 to f4 is good.
- a plurality of electronic components P1 to P6 are mounted on the board 8 after passing through all the electronic component mounting machines 5 shown in FIG.
- the mounting positions of all the electronic components P1 to P6 are determined based on the solder marks f1 to f4 in which the printing state is good. Therefore, the plurality of electronic components P1 to P6 are accurately mounted on the solder portion 82. On the other hand, the plurality of electronic components P1 to P6 and the solder portion 82 are shifted from the land portion 800.
- the mounting position determination method is executed when the electronic component mounting machine 5 shown in FIG. 1 determines the mounting positions of the electronic components P1 to P6 shown in FIG.
- FIG. 4 shows a flowchart of the mounting position determination method.
- FIG. 5A shows a top view of the substrate after the solder printer is carried out.
- FIG. 5B shows a top view of the substrate after carrying out the electronic component mounting machine at the upstream end in the carrying direction.
- FIG. 6 shows a skip necessity inquiry screen.
- FIG. 5A corresponds to FIG. 3B
- FIG. 5B corresponds to FIG. 3C
- FIG. 5A and FIG. 5B show a case where the printing state of the solder portion 82 in the solder printer 3 is poor.
- the mounting position determination method includes a board mark reading step (S2 in FIG. 4 (step 2; the same applies hereinafter)), a skip flag checking step (S4 in FIG. 4), and a solder mark reading step (FIG. 4). 4 (S5) and a skip necessity determination step (S9 to S11 in FIG. 4).
- the imaging device 571 of the leading electronic component mounting machine 5 shown in FIG. 1 first images board marks F1 to F3 after the start of automatic operation (S1 in FIG. 4).
- the image processing device 503 processes the images of the substrate marks F1 to F3.
- the computer 502 reads the substrate marks F1 to F3 from the processed image (S2 in FIG. 4).
- the leading electronic component mounting machine 5 starts imaging and reading of the solder marks f1 to f4 (S3 in FIG. 4). Note that the solder portions 82 used as the solder marks f1 to f4 are determined in advance.
- the electronic component mounter 5 reads the solder marks f1 to f4 in a predetermined order (in this example, the order of f1 ⁇ f2 ⁇ f3 ⁇ f4).
- the computer 502 refers to the data in the storage unit 502b and confirms whether or not the skip flag is set for the solder mark f1 (S4 in FIG. 4).
- the first electronic component mounter 5 sets the skip flag. For this reason, in the leading electronic component mounting machine 5, the solder marks f1 to f4 on which the skip flag is set are not confirmed.
- the imaging device 571 images the solder mark f1. Note that the imaging positions of the solder marks f1 to f4 are determined with reference to the substrate marks F1 to F3 that have been read in the substrate mark reading step (S2 in FIG. 4).
- the image processing device 503 processes the image of the solder mark f1.
- the computer 502 reads the solder mark f1 from the processed image (S5 in FIG. 4). Then, the computer 502 determines whether or not the solder mark f1 has been read (S6 in FIG. 4). As shown in FIG. 5A, the printed state of the solder mark f1 is good. Therefore, the computer 502 can read the solder mark f1.
- the electronic component mounting machine 5 starts reading the solder mark f2, which is the next reading target (S7 and S3 in FIG. 4). Similarly to the solder mark f1, the electronic component mounting machine 5 checks the skip flag of the solder mark f2 (S4 in FIG. 4), images the solder mark f2, and reads it (S5 in FIG. 4). Then, the computer 502 determines whether or not the solder mark f2 has been read (S6 in FIG. 4).
- the display device 505 displays a skip necessity inquiry screen (S9 in FIG. 4). As shown in FIG. 6, on the screen 505a of the display device 505, an inquiry message 505b regarding necessity of skip, a skip decision button 505c, and a skip cancel button 505d are displayed.
- the worker who visually recognizes the inquiry message 505b confirms the image of the solder mark f2 via the screen of the display device 505.
- the worker determines that “the printed state of the solder mark f2 is good”
- the worker corrects the data regarding the solder mark f2 via the screen of the display device 505.
- the operator touches the skip cancel button 505d (S10 in FIG. 4). That is, if the computer 502 cannot read the solder mark f2 even though the printed state of the solder mark f2 is good, there is some problem (for example, an input error) in the data related to the solder mark f2 in the storage unit 502b. ) Is assumed. For this reason, the worker checks the data, corrects the defect, and touches the skip cancel button 505d. The computer 502 reads the solder mark f2 again (S5 in FIG. 4).
- the solder mark f2 is faint. For this reason, the operator who has confirmed the image of the solder mark f2 touches the skip determination button 505c (S10 in FIG. 4).
- the computer 502 sets a skip flag for the solder mark f2 that could not be read (S11 in FIG. 4).
- Information (skip flag) regarding the solder mark f2 is transmitted to the control device 50 of the electronic component mounting machine 5 on the downstream side (following) in the transport direction shown in FIG.
- the skip flag is stored in the storage unit 502b of the subsequent electronic component mounting machine 5.
- the electronic component mounter 5 reads the solder mark f3 (S7 ⁇ S3 ⁇ S4 ⁇ S5 ⁇ S6 in FIG. 4), and finally reads the solder mark f4 (S7 ⁇ S3 ⁇ FIG. 4). S4 ⁇ S5 ⁇ S6).
- the computer 502 of the first electronic component mounting machine 5 is mounted on the electronic component mounting machine 5.
- the mounting positions of the electronic components P1 and P2 are determined (S8 in FIG. 4).
- the computer 502 determines the mounting position of the electronic component P1 in principle based on the solder marks f1 and f3, and exceptionally based on the board marks F1 to F3. In addition, the mounting position of the electronic component P2 is determined based on the solder marks f2 and f4 in principle and exceptionally based on the board marks F1 to F3.
- the computer 502 determines the mounting position of the electronic component P1 based on the two solder marks f1 and f3 at the diagonal positions. That is, based on the deviation between the positions of the solder marks f1 and f3 stored in the storage unit 502b in advance and the positions of the actually read solder marks f1 and f3, the electronic components stored in the storage unit 502b in advance. The mounting position of P1 is corrected.
- the computer 502 sets the mounting position of the electronic component P1 as the board mark that is the reference source of the imaging positions of the solder marks f1 and f3. Determine based on F1 to F3. That is, based on the deviation between the positions of the board marks F1 to F3 stored in the storage unit 502b and the actually read positions of the board marks F1 to F3, the electronic components stored in the storage unit 502b in advance.
- the mounting position of P1 is corrected.
- the computer 502 determines the mounting position of the electronic component P1 in principle with reference to the solder marks f1 and f3, and exceptionally with reference to the board marks F1 to F3. The same applies to the electronic component P2.
- the computer 502 determines the mounting position of the electronic component P1 based on the solder marks f1 and f3. On the other hand, since the solder mark f2 could not be read, the computer 502 determines the mounting position of the electronic component P2 based on the board marks F1 to F3.
- the suction nozzle 570 shown in FIG. 2 mounts the electronic components P1 and P2 at the determined mounting coordinates.
- the electronic component P ⁇ b> 1 is accurately attached to the solder portion 82.
- the electronic component P2 is accurately mounted on the land portion 800.
- the mounting positions of the electronic components P1 and P2 are basically based on the solder marks f1 to f4. Exceptionally, it can be determined based on the substrate marks F1 to F3. That is, as shown in FIG. 4, when the solder mark f2 cannot be read, the control device 50 automatically uses the electronic parts P2 (on the basis of the board marks F1 to F3 that are reference sources of the imaging positions of the solder marks f2.
- the mounting position of the electronic component P2) whose mounting position is determined based on the solder mark f2 that could not be read is determined. For this reason, even when the solder mark f2 cannot be read, the production of the substrate 8 can be automatically continued. Further, according to the electronic component mounting machine 5 of the present embodiment, even if the control device 50 cannot read the solder mark f2 from the image, the manual operation of the operator (identifying the solder mark f2 with poor printing while viewing the image) Work) does not intervene. For this reason, the mounting accuracy of the electronic component P2 is high.
- the subsequent electronic component mounting machine 5 can read unreadable solder by transmitting information (skip flag) from the leading electronic component mounting machine 5.
- the mark f2 can be recognized. Therefore, the subsequent electronic component mounting machine 5 can skip imaging and reading of the unreadable solder mark f2. Therefore, in the subsequent electronic component mounting machine 5, it is possible to reduce the mark imaging man-hours and the mark reading man-hours.
- the display device 505 of the leading electronic component mounting machine 5 displays an inquiry message 505b when the control device 50 cannot read the solder mark f2. For this reason, the operator who has visually confirmed the inquiry can check the cause of the inability to read the solder mark f2. If the computer 502 cannot read the solder mark f2 even though the printing state of the solder mark f2 is good, there is some problem (for example, an input error) in the data related to the solder mark f2 in the storage unit 502b. ) Is assumed. In this respect, since the display device 505 displays the inquiry message 505b, the operator can easily find and correct the problem.
- the solder marks f1 to f4 for mounting positioning of the electronic components P1 and P2 are not particularly limited.
- the mounting position of the electronic component P1 may be determined from at least one of the solder marks f1 to f4 on the substrate 8. The same applies to the electronic component P2.
- the solder marks f1 to f4 for mounting and positioning the plurality of electronic components P1 and P2 may be exactly the same. Further, only a part of them may match. It may also be completely different.
- a single solder mark f1 to f4 may be set based on a plurality of solder portions 82.
- the center of gravity of a virtual rectangle formed by connecting the outer edges of the four solder portions 82 at the left rear corner in FIG. 5A may be used as the solder mark f1.
- the solder mark f1 center of gravity
- the solder mark f1 center of gravity
- the solder mark f1 center of gravity
- a dedicated solder part 82 for the mark may be used. That is, the solder marks f1 to f4 may be in the same coordinate system as the solder portion 82.
- the substrate marks F1 to F3 for imaging positioning of the solder marks f1 to f4 are not particularly limited.
- the mounting position of the solder mark f1 may be determined from at least one of the board marks F1 to F3. The same applies to the solder marks f2 to f4.
- the substrate marks F1 to F3 for imaging positioning of the plurality of solder marks f1 to f4 may be exactly the same. Further, only a part of them may match. It may also be completely different.
- the land portion 800 may be used as the substrate marks F1 to F3. That is, the substrate marks F1 to F3 may be in the same coordinate system as the wiring pattern 80.
- the types of marks for the main reference mark and the sub reference mark are not particularly limited. For example, it may be a character, a figure, a symbol, or a combination thereof.
- the number and location of the main reference mark and the sub reference mark are not particularly limited.
- the type of main reference mark is not particularly limited.
- it may be a component mark (for example, a mark on an electronic component used for mounting positioning when another electronic component is mounted on the upper surface of the electronic component).
- the type of the substrate 8 is not particularly limited.
- a plurality of separable product substrates may be arranged on a single sheet substrate.
- the main reference mark only needs to be arranged on at least one of the sheet substrate and the product substrate. The same applies to the sub-reference mark.
- the type of the imaging device 571 is not particularly limited.
- a CMOS camera Complementary Metal-Oxide Semiconductor
- the type, arrangement, and number of devices that make up the production line 1 are not particularly limited.
- the solder printing inspection machine 4 may not be arranged.
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Abstract
Description
まず、本実施形態の生産ラインの構成について説明する。図1に、本実施形態の生産ラインの模式図を示す。図1に示すように、生産ライン1は、左側(搬送方向上流側)から右側(搬送方向下流側)に向かって、はんだ印刷機3と、はんだ印刷検査機4と、複数の電子部品実装機5と、リフロー炉6と、基板外観検査機7と、を備えている。これらの装置は、通信可能に接続されている。
次に、本実施形態の生産ラインにより実行される基板生産方法について説明する。図3(a)に、はんだ印刷機搬入前における基板の上面図を示す。図3(b)に、はんだ印刷機搬出後における基板の上面図を示す。図3(c)に、電子部品実装機搬出後における基板の上面図を示す。図3(d)に、リフロー炉搬出後における基板の上面図を示す。なお、図3(b)~図3(d)に示すのは、図1に示すはんだ印刷機3におけるはんだ部82の印刷状態が良好な場合である。
次に、上記基板生産方法において実行される装着位置決定方法について説明する。装着位置決定方法は、図1に示す電子部品実装機5において、図3(d)に示す電子部品P1~P6の装着位置を決定する際に、実行される。
先頭の電子部品実装機5においては、図3(d)に示す電子部品P1~P6のうち、電子部品P1、P2が、基板8の所定の位置に装着される。図4に示すように、図1に示す先頭の電子部品実装機5の撮像装置571は、自動運転開始後(図4のS1)、まず基板マークF1~F3を撮像する。画像処理装置503は、基板マークF1~F3の画像を処理する。コンピュータ502は、処理された画像から、基板マークF1~F3を読み取る(図4のS2)。
図1に示す後続の電子部品実装機5においても、先頭の電子部品実装機5と同様に、図4に示す装着位置決定方法が実行される。ただし、後続の電子部品実装機5には、先頭の電子部品実装機5から、読み取り不可のはんだマークf2について、スキップフラグが既に伝送されている。後続の電子部品実装機5のコンピュータ502は、スキップフラグ確認工程(図4のS4)において、当該スキップフラグを確認する。このため、コンピュータ502は、はんだマークf2の撮像および読み取りをスキップする。すなわち、後続の電子部品実装機5においては、はんだマークf1→f3→f4の順に、撮像、読み取りが実行される。なお、後続の電子部品実装機5のコンピュータ502は、はんだマークf2を基準に装着位置を決定する予定だった電子部品の装着位置を、基板マークF1~F3を基準に決定する。
次に、本実施形態の電子部品実装機および生産ラインの作用効果について説明する。図5(a)、図5(b)に示すように、本実施形態の電子部品実装機5によると、電子部品P1、P2の装着位置を、原則的にはんだマークf1~f4を基準に、例外的に基板マークF1~F3を基準に、決定することができる。すなわち、図4に示すように、はんだマークf2を読み取れない場合、制御装置50は、自動的に、はんだマークf2の撮像位置の参照元である基板マークF1~F3を基準に、電子部品P2(詳しくは、本来、読み取れなかったはんだマークf2を基準に装着位置が決定される電子部品P2)の装着位置を決定する。このため、はんだマークf2を読み取れない場合であっても、自動的に基板8の生産を継続することができる。また、本実施形態の電子部品実装機5によると、制御装置50が画像からはんだマークf2を読み取れない場合であっても、作業者の手作業(画像を見ながら印刷不良のはんだマークf2を特定する作業)が介入しない。このため、電子部品P2の装着精度が高い。
以上、本発明の電子部品実装機および生産ラインの実施の形態について説明した。しかしながら、実施の形態は上記形態に特に限定されるものではない。当業者が行いうる種々の変形的形態、改良的形態で実施することも可能である。
Claims (4)
- 基板に配置される副基準マークと、前記副基準マークを参照して撮像位置が決定される主基準マークと、を撮像する撮像装置と、
前記撮像装置が撮像した画像から前記主基準マークを読み取れる場合、前記主基準マークを基準に前記基板に対する電子部品の装着位置を決定し、前記主基準マークの印刷不良に起因して前記画像から前記主基準マークを読み取れない場合、前記主基準マークの参照元である前記副基準マークを基準に前記装着位置を決定する制御装置と、
を備える電子部品実装機。 - 前記基板は、前記基板に配置されるランド部と、前記ランド部に配置されるはんだ部と、前記ランド部と同一の座標系の基板マークと、前記はんだ部と同一の座標系のはんだマークと、を有し、
前記副基準マークは、前記基板マークであり、
前記主基準マークは、前記はんだマークである請求項1に記載の電子部品実装機。 - 請求項1または請求項2に記載の複数の電子部品実装機が、前記基板の搬送方向の上流側から下流側に向かって、並置される生産ラインであって、
前記搬送方向上流端の前記電子部品実装機の前記制御装置は、前記画像から前記主基準マークを読み取れない場合、読み取れない前記主基準マークに関する情報を、前記搬送方向下流側の前記電子部品実装機に、伝送する生産ライン。 - 前記搬送方向上流端の前記電子部品実装機は、前記制御装置が前記画像から前記主基準マークを読み取れない場合、読み取り作業のスキップの要否を作業者に問い合わせる表示装置を備える請求項3に記載の生産ライン。
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