WO2016092706A1 - テープの自動検知装置及び自動検知方法 - Google Patents
テープの自動検知装置及び自動検知方法 Download PDFInfo
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- WO2016092706A1 WO2016092706A1 PCT/JP2014/083041 JP2014083041W WO2016092706A1 WO 2016092706 A1 WO2016092706 A1 WO 2016092706A1 JP 2014083041 W JP2014083041 W JP 2014083041W WO 2016092706 A1 WO2016092706 A1 WO 2016092706A1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- 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
- H05K13/02—Feeding of components
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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
- H05K13/02—Feeding of components
- H05K13/0215—Interconnecting of containers, e.g. splicing of tapes
-
- 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
Definitions
- the present invention relates to a tape automatic detection device and an automatic detection method capable of automatically detecting tape information.
- Patent Document 1 describes a tape feeder that can automatically load a tape provided with cavities for storing parts at regular intervals. This automatic loading is performed by detecting the pitch between adjacent cavities and the presence / absence of components in the cavities as tape information by a plurality of optical sensors.
- Patent Document 1 tends to have a complicated configuration because it is necessary to detect a tape with a plurality of optical sensors. Therefore, an apparatus that can automatically detect tape information with a simpler configuration is desired.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide an automatic tape detection device and an automatic detection method capable of automatically detecting tape information with a simple configuration.
- the tape automatic detection apparatus of the present invention feeds a tape having a plurality of empty cavities at a predetermined pitch with a cavity for storing components at regular intervals, and A tape feeding mechanism having a plurality of origin positions at intervals of the predetermined pitch or more, an origin position detector for detecting each of the plurality of origin positions of the tape feeding mechanism, and a transmitted light amount by transmitting light to the tape
- a tip detector for detecting the tip of the tape fed by the tape feeding mechanism based on the amount of light detected by the light detector, and the tip of the tape is detected by the tip detector. Based on the first position of the tape feeding mechanism at the time and the first origin position of the tape feeding mechanism immediately before the leading edge detection by the leading edge detector.
- a reference position determining unit that determines a tape reference position having a fixed positional relationship with the point position, and after the determination of the tape reference position by the reference position determining unit, based on a detection period of the empty cavity by the light amount detector
- An interval calculation unit for calculating the interval between the cavities.
- the tape reference position having a fixed positional relationship with the first origin position of the tape feeding mechanism is determined, and then the light amount detection is performed to calculate the cavity interval. Can be easily obtained. Therefore, for example, in an automatic splicing device or an automatic tape setting device to which an automatic tape detection device is applied, the cycle time can be shortened and the production efficiency can be improved.
- the tape automatic detection method of the present invention is a tape feeding method in which a part storing cavity is provided at regular intervals, and a tape having a plurality of empty cavities on the front end side is provided with a plurality of origin positions at predetermined pitch intervals.
- the tape automatic detection device has information on the carrier tape in which cavities for storing components are provided at regular intervals, that is, the presence / absence of carrier tape, the pitch (interval) between adjacent cavities, and the presence / absence of components in the cavity. It is a device that can automatically detect the above.
- an apparatus to which this tape automatic detection apparatus is applied for example, there is an automatic splicing apparatus.
- the automatic splicing device uses the end of the carrier tape wound on the current reel mounted on the tape feeder mounted on the component feeder of the component mounting machine, and the beginning of the carrier tape wound on the next reel to be replaced. It is a device that automatically connects to the unit.
- the carrier tape Tc is formed to be elongated with a predetermined width, and a plurality of cavities Ct are formed with a predetermined pitch Pt in the longitudinal direction. In these cavities Ct, components e mounted on the circuit board are respectively stored. The upper part of the cavity Ct is opened and covered with a top tape Tt that is attached to the surface of the carrier tape Tc. On one end side in the width direction of the carrier tape Tc, feed holes Hc are formed at a constant pitch Pc in the longitudinal direction.
- a carrier tape Tc in which a plurality of empty cavities Ct in which the component e is not stored on the front end side is continuous is used.
- the carrier tape Tc has the same pitch Pc and size of the feed holes Hc, although the pitch Pt and size of the cavity Ct vary depending on the size of the component e.
- the cavity Ct and the feed hole Hc are arranged in a fixed positional relationship, and the carrier tape Tc shown in FIGS. 3A and 3B has one cavity Ct at the same position as the feed hole Hc and at an intermediate position between adjacent feed holes Hc.
- Are formed at a predetermined pitch Pt ( Pc / 2).
- a reel 11 around which a carrier tape Tc is wound is detachably attached to the tape feeder 10.
- the tape feeder 10 has a built-in tape feed mechanism 13 that feeds the carrier tape Tc wound around the reel 11 one by one and supplies the components e one by one to the component supply position 12 provided at the tip of the tape feeder 10. Is done.
- the tape feed mechanism 13 includes a sprocket 14 that is rotatably supported by the main body of the tape feeder 10 and engages with a feed hole Hc of the carrier tape Tc, and a motor (not shown) that rotates the sprocket 14.
- the automatic splicing device 20 includes a box-shaped housing 21 and a lid body 22 that can open and close the upper surface of the housing 21 in the vertical direction (the arrow direction in the drawing).
- the automatic splicing device 20 is configured to be movable between feeders mounted on a component supply device of a component mounter mounted on an unillustrated cart or the like.
- the lid 22 is closed at the time of splicing and is opened at the time of taking out the carrier tape Tc after the splicing.
- the first and second tape feeders 50 and 51 As shown in FIG. 2, in the housing 21 of the automatic splicing device 20, the first and second tape feeders 50 and 51, the first and second origin position detecting devices 63a and 63b, the first and second Light quantity detection devices 52 and 53, first and second cutting devices 54 and 55, first and second take-in devices 56 and 57, a joining device 58, a control device 59 (see FIG. 1), and the like are arranged. Is done.
- the automatic tape detection device of the present embodiment includes first and second tape feeding devices 50 and 51 (tape feeding mechanism), first and second origin position detecting devices 63a and 63b (origin position detector), 1. Second light quantity detection devices 52 and 53 (light quantity detector) and control device 59 (tip detection unit 94, reference position determination unit 95, interval calculation unit 96, threshold value determination unit 97, component detection unit 98 shown in FIG. 5) ).
- the first and second tape feeders 50 and 51 are disposed on both sides of the housing 21 and the lid 22, respectively.
- the first and second origin position detecting devices 63a and 63b are respectively disposed below first and second sprockets 61a and 61b, which will be described later, of the first and second tape feeding devices 50 and 51, respectively.
- the two light quantity detection devices 52 and 53 are vertically opposed to each other with first and second detection positions Ld1 and Ld2 of first and second transport paths 60a and 60b (described later) of the first and second tape feeding devices 50 and 51, respectively. To be arranged respectively.
- the first and second cutting devices 54 and 55 are disposed at the first and second cutting positions Lf1 and Lf2 between the first and second tape feeding devices 50 and 51, respectively.
- the devices 56 and 57 are disposed between the first and second cutting positions Lf1 and Lf2 between the first and second cutting devices 54 and 55 and the splicing position LS, respectively. 2 between the take-in devices 56, 57.
- the first and second tape feeders 50 and 51 are provided with first and second transport paths 60a and 60b provided to extend in the horizontal direction from both side surfaces of the housing 21 toward the center, and the first and second transports.
- First and second sprockets 61a and 61b disposed below the paths 60a and 60b, first and second gear motors 62a and 62b connected to the first and second sprockets 61a and 61b, and first and second First and second tape detectors 64a, 64b and the like disposed above the transport paths 60a, 60b.
- the first and second cutting devices 54 and 55 move the first and second cutters 68a and 68b provided at the first and second cutting positions Lf1 and Lf2 and the first and second cutters 68a and 68b up and down. And a substantially vertical movement mechanism.
- the 1st, 2nd cutting devices 54 and 55 are constituted so that an unnecessary part can be cut in a cutting part of carrier tape Tc.
- the first and second take-in devices 56 and 57 include first and second take-in members 75a and 75b provided between the first and second cutting positions Lf1 and Lf2 and the splicing position LS. 2 and a drive mechanism (not shown) for driving the intake members 75a and 75b.
- the first and second take-in devices 56 and 57 are configured so as to be able to take in the unnecessary portions of the carrier tape Tc that have been cut.
- the joining device 58 is provided between the first cutting device 54 and the second cutting device 55, and a transport path 60 that forms part of the first and second transport paths 60a and 60b is formed.
- the joining device 58 is configured to be able to connect a carrier tape Tc that is transported along the transport path 60 and that has a cut portion abutted at the center splicing position LS of the transport path 60.
- two carrier tapes Tc to be spliced are fed at predetermined pitches by the first and second tape feeding devices 50 and 51 from the left and right in FIG.
- Information on each carrier tape Tc that is, presence / absence of carrier tape Tc, pitch Pt between adjacent cavities Ct (hereinafter referred to as pitch Pt of cavity Ct), presence / absence of component e in cavity Ct (component storage cavity Ct, empty cavity Ct Are detected).
- the portions of the plurality of empty cavities Ct connected to the tip side are cut by the first and second cutters 68a and 68b of the first and second cutting devices 54 and 55, respectively. It is taken in by the first and second take-in members 75a and 75b of the first and second take-in devices 56 and 57, respectively.
- a protective tape with a splicing tape (not shown) connecting the two carrier tapes Tc is fed from a direction orthogonal to the feeding direction of the carrier tapes Tc, and the cut ends of the two carrier tapes Tc are joined to each other by a joining device. At 58, they are connected to each other by splicing tape.
- the tape automatic detection device of the present embodiment in the automatic splicing device 20 will be described in detail.
- the first and second transport paths 60a and 60b of the first and second tape feeders 50 and 51 have a width slightly larger than the width of the carrier tape Tc, and are formed on both side surfaces of the casing 21.
- first and second teeth 67a, 67b having the same pitch as the pitch Pc of the feed holes Hc of the carrier tape Tc are formed on the periphery of the first and second sprockets 61a, 61b. .
- the first and second teeth 67a and 67b are formed at intervals equal to or greater than the feed pitch of the carrier tape Tc.
- the first and second sprockets 61a and 61b include first and second teeth 67au and 67bu that have rotated to the top of the rotating first and second teeth 67a and 67b, and first and second transport paths. It arrange
- the first and second gear motors 62a and 62b are, for example, stepping motors, and the carrier tape Tc is fed at a predetermined pitch by the first and second sprockets 61a and 61b connected to each other. This is a motor capable of controlling the position of the cut portion of the tape Tc.
- the first and second tape detectors 64a and 64b are, for example, touch sensors, and the carrier tape Tc is inserted from the first and second tape inlets 84a and 84b provided on both side surfaces of the housing 21. This is a sensor that is detected by contact with the carrier tape Tc.
- the first and second origin position detection devices 63a and 63b are, for example, photosensors, and the first and second ones of the plurality of first and second teeth 67a and 67b of the first and second sprockets 61a and 62b.
- the sensor detects the teeth 67a and 67b when the sensor light is shielded by the two teeth 67a and 67b.
- the positions of the plurality of first and second teeth 67a and 67b of the first and second sprockets 61a and 61b are set to the origins of the first and second tape feeders 50 and 51, respectively. Define as a position. Therefore, the first and second origin position detection devices 63a and 63b are sensors that detect the plurality of origin positions of the first and second tape feeding devices 50 and 51, respectively.
- the first and second origin position detecting devices 63a and 63b are the first and second teeth that have rotated to the lowest of the rotating first and second teeth 67a and 67b.
- 67ad, 67bd oil position
- the first and second light quantity detection devices 52 and 53 are, for example, photosensors, and transmit the transmitted light quantity of the cavity Ct of the carrier tape Tc sent by the first and second sprockets 61a and 62b. It is a sensor to detect.
- the amount of light detected by the first and second light amount detection devices 52 and 53 shows the maximum value Lmax when the light is not shielded by the carrier tape Tc, that is, in a saturated state, and varies depending on the type of the carrier tape Tc in the empty cavity Ct.
- the empty cavity Ct of the carrier tape Tc shown in FIGS. 3A and 3B has a value smaller than the predetermined value La
- the empty cavity Ctt of the carrier tape Tcc shown in FIG. 3C has a value larger than the predetermined value La.
- the determination is made by setting the light amount threshold value according to the type of the carrier tape Tc. That is, FIG.
- a value Lb smaller than the predetermined value La is set as a threshold value.
- the predetermined value La is set as a threshold value, and when the detected light amount is smaller than the threshold value La, it is determined as the tape portion and the component storage cavity Ctt.
- the detection positions (positions of the sensor optical axis S) of the first and second light quantity detection devices 52 and 53 are the first and second origin position detection devices 63a and 63b.
- the cavity Ctb formed at the same position as the feed hole Hcb of the carrier tape Tc is located, that is, the cavity Ctb It arrange
- the position of the feed hole Hcb at the same position as the cavity Ctb detected by the first and second light quantity detection devices 52 and 53 is defined as the tape reference position (position of the feed hole Hcb) of the carrier tape Tc. Therefore, the origin positions of the first and second tape feeders 50 and 51 (the positions of the first and second teeth 67ad and 67bd) are in a fixed positional relationship with the tape reference position (the position of the feed hole Hcb) of the carrier tape Tc. Will have.
- the tape detection unit 90 of the control device 59 includes a tape feed control unit 91, an origin position detection unit 92, a light amount detection unit 93, a tip detection unit 94, a reference position determination unit 95, An interval calculation unit 96, a threshold selection unit 97, a component detection unit 98, a storage unit 99, and the like are provided.
- the tape feed controller 91 When the tape feed controller 91 receives the detection signal of the carrier tape Tc from the first and second tape detectors 64a, 64b, the feed amount Pc / 4 of the pitch Pc of the cavity Ct or less, for example, a quarter pitch Pc.
- the first and second gear motors 62a and 62b of the first and second tape feeders 50 and 51 are rotationally driven so as to feed the carrier tape Tc.
- the first and second carrier tapes Tc are fed at an increased speed from the beginning, for example, at a feed amount Pc / 2 of a half pitch Pc.
- the two gear motors 62a and 62b are driven to rotate. Further, the first and second gear motors 62a and 62b are rotationally driven and stopped based on the start position of the component storage cavity Ct read from the storage unit 99 and the pitch Pc of the cavity Ct.
- the origin position detector 92 inputs the detection signals of the origin positions of the first and second tape feeders 50 and 51 input from the first and second origin position detectors 63 a and 63 b to the reference position determiner 95.
- the light amount detector 93 receives the pitch feed signal of the carrier tape Tc from the tape feed controller 91 and inputs the light amount detection signal from the first and second light amount detectors 52 and 53 every time the pitch is fed. 94, the interval calculation unit 96, the threshold value determination unit 97, and the component detection unit 98.
- the leading edge detection unit 94 detects the leading edge of the carrier tape Tc sent by the first and second tape feeding devices 50 and 51 based on the light quantity detection signal input from the light quantity detection part 93, and uses the detection signal as a reference position.
- the data is input to the determination unit 95.
- the reference position determination unit 95 receives the first detection signal of the leading end of the carrier tape Tc from the leading end detection unit 94, and the first position and the leading end detection unit of the first and second tape feeders 50 and 51. 94, a tape reference position having a fixed positional relationship with the first origin position is determined based on the first origin positions of the first and second tape feeding devices 50 and 51 immediately before the leading edge detection by 94, and the decision signal is sent to the tape feed. The data is input to the control unit 91 and the interval calculation unit 96.
- the tape reference position determination operation based on the first position and the first origin position will be described with reference to FIGS. Since the operation of determining the tape reference position with respect to the carrier tape Tc inserted from both sides of the automatic splicing device 20 is the same, in the following description, the carrier tape Tc shown in FIGS. 3A and 3B inserted from the right side of FIG. The operation for determining the tape reference position will be described.
- the tape tip Th of the carrier tape Tc is between the cavity Ct of the feed hole Hc indicated by the phantom line (dashed line) and the cavity Ct adjacent to the cavity Ct. The tape part.
- FIG. 8 shows a detection state of the first origin position immediately before the leading edge of the carrier tape Tc is detected.
- the first origin position detector 63a detects the lowermost first tooth 67ad1 of the first sprocket 61a, that is, the uppermost first tooth 67au1 of the first sprocket 61a and the feed hole Hcd1 of the carrier tape Tc.
- the position of the tape tip Th of the carrier tape Tc when the two are engaged with each other is the upstream side of conveyance by a quarter pitch (Pc / 4) from the detection position of the first light quantity detection device 52 (position of the sensor optical axis S). Are separated.
- the first tooth 67a detected next to the first tooth 67ad1 is denoted by reference numeral 67ad1
- the first tooth 67a that meshes with the feed hole Hcd2 next to the first tooth 67au1 is denoted by reference numeral 67au1.
- FIG. 9 shows the leading end detection state of the carrier tape Tc. That is, the first sprocket 61a rotates by the distance Pc / 4 from the first origin position detection (detection of the first teeth 67ad1) state of FIG. 8, and the carrier tape Tc advances by the distance Pc / 4, and the tape tip Th Shows a state where the detection position of the first light quantity detection device 52 (the position of the sensor optical axis S) has been reached. The position of the first tooth 67ad1 at this time is defined as a first position.
- the reference position determination unit 95 includes a first origin position, that is, a position at which the first tooth 67ad1 is detected by the first origin position detection device 63a, and a first position, ie, the first tooth 67ad1, at the first origin position detection device 63a.
- a feed amount of the carrier tape Tc from the first origin position to the first position, that is, the distance Pc / 4 is obtained from the position rotated by the distance Pc / 4 after the detection. Then, the difference between the adjacent origin positions, that is, the distance Pc, and the feed amount of the carrier tape Tc from the first origin position to the first position, that is, the distance Pc / 4, that is, the distance 3Pc / 4 is obtained.
- the carrier tape Tc is sent from the state of FIG. 9 by the calculated distance 3Pc / 4, it is the same as the cavity Ct of the carrier tape Tc located at the detection position of the first light quantity detection device 52 (position of the sensor optical axis S).
- the position of the position feed hole Hc is determined as a tape reference position having a certain relationship with the first origin position.
- FIG. 10 shows a state where the carrier tape Tc is located at the tape reference position.
- the first origin position detection device 63a detects the lowermost first tooth 67ad2 that rotates next to the first tooth 67au1 of the first sprocket 61a, and follows the first tooth 67au1 of the first sprocket 61a.
- the uppermost first tooth 67au2 rotating in the direction of the carrier tape Tc and the feed hole Hcd2 fed next to the feed hole Hcd1 of the carrier tape Tc are meshed with each other, and the origin position detection state immediately after detecting the leading end of the carrier tape Tc Indicates.
- the tape reference position is the position of the feed hole Hcd0 formed at the same position as the cavity Ctb located at the detection position (position of the sensor optical axis S) of the first light quantity detection device 52.
- the interval calculation unit 96 inputs a reference position determination signal of the carrier tape Tc from the reference position determination unit 95, and then based on the detected light amount input from the light amount detection unit 93 and the threshold value input from the threshold determination unit 97. An empty cavity Ct of Tc is detected, and the pitch Pc of the cavity Ct is calculated based on the detection cycle and stored in the storage unit 99.
- the threshold value determination unit 97 uses the empty cavity Ct, the tape portion (portion between adjacent cavities Ct), and the component storage cavity Ct stored in advance in the storage unit 99. A predetermined threshold value to be determined is determined.
- the component detection unit 98 inputs the calculation signal of the pitch Pc of the cavity Ct from the interval calculation unit 96, and then based on the detected light amount input from the light amount detection unit 93 and the threshold value input from the threshold value determination unit 97, The component storage cavity Ct is detected, and the start position of the component storage cavity Ct is stored in the storage unit 99.
- a plurality of light intensity threshold values for discriminating between the empty cavity Ct, the tape portion (a portion between adjacent cavities Ct), and the component storage cavity Ct are stored in advance. That is, the threshold Lb ( ⁇ Lc) used when the light quantity of the empty cavity Ct detected by the first and second light quantity detection devices 52 and 53 is Lc (in the case of the carrier tape Tc) and the light quantity of the empty cavity Ctt. Is stored in advance as a threshold value La ( ⁇ Lcc) used when L is Lcc (in the case of carrier tape Tcc). Further, the storage unit 99 stores the pitch Pc of the cavity Ct input from the interval calculation unit 96 and the start position of the component storage cavity Ct input from the component detection unit 98.
- the control device 59 confirms whether or not the carrier tape Tc has been inserted from the first tape inlet 84a (step S1 in FIG. 6), and when the carrier tape Tc has been inserted from the first tape inlet 84a, The rotation drive is started and the carrier tape Tc is pitch-fed (step S2 in FIG. 6).
- the tape feed controller 91 drives the first gear motor 62a to feed the carrier tape Tc below the pitch Pc of the cavity Ct.
- the feed amount is, for example, a feed amount Pc / 4 of a quarter pitch Pc.
- the control device 59 confirms whether or not the leading end of the carrier tape Tc has been detected (step S3 in FIG. 6).
- the leading end of the carrier tape Tc is detected, the first position of the first tape feeder 50 and immediately before the leading end detection.
- the first origin position of the first tape feeder 50 is detected (step S4 in FIG. 6).
- the control device 59 determines the tape reference position of the carrier tape Tc based on the detected first position and first origin position (step S5 in FIG. 6).
- the light amount detection unit 93 inputs the pitch feed signal of the carrier tape Tc from the tape feed control unit 91
- the light amount detection unit 93 inputs the light amount detection signal from the first light amount detection device 52 every pitch feed and 94.
- the tip detection unit 94 inputs a detection signal at the tip of the carrier tape Tc to the reference position determination unit 95 when the detected light amount from the light amount detection unit 93 reaches the minimum value Lmin.
- the reference position determination unit 95 receives the first position of the first tape feeder 50 when the leading edge detection signal is input, the first origin position of the first tape feeder 50 immediately before the leading edge detection, and the first position from the first origin position.
- the tape reference position is determined based on the feed amount of the carrier tape Tc and the interval between the adjacent origin positions, and the determination signal is input to the tape feed control unit 91 and the interval calculation unit 96.
- the control device 59 speeds the rotational drive of the first sprocket 61a from the beginning and pitch-feeds the carrier tape Tc (step S6 in FIG. 6), and detects the amount of light for every pitch-feed of the carrier tape Tc (step S7 in FIG. 6).
- a light quantity threshold value is determined based on the detected light quantity (step S9 in FIG. 6).
- the tape feed control unit 91 accelerates the first gear motor 62a to rotate the carrier tape Tc, for example, the pitch Pc of the cavity Ct.
- the feed is performed with a feed amount Pc / 2 of 1/2.
- the threshold value determination unit 97 inputs the detected light amount for each pitch feed of the carrier tape Tc from the light amount detection unit 93, and when the light amount Lc of the empty cavity Ct is input, the threshold value Lb of the light amount corresponding to the light amount Lc is stored from the storage unit 99. read out.
- the control device 59 obtains the detection period of the light quantity of the empty cavity Ct (step S10 in FIG. 6), obtains the pitch Pc of the cavity Ct based on the detection period, and stores it in the storage unit 99 (step S11 in FIG. 6). ).
- the interval calculation unit 96 inputs a detection light amount for each pitch feed of the carrier tape Tc from the light amount detection unit 93, and detects the light amount Lc of the empty cavity Ct. Find the period.
- the interval calculation unit 96 obtains the pitch Pc of the cavity Ct from the detection period of the light amount Lc of the empty cavity Ct and the feed pitch of the carrier tape Tc, and stores it in the storage unit 99.
- the rotational drive of the first sprocket 61a is further accelerated to pitch-feed the carrier tape Tc (step S12 in FIG. 6), and the light quantity smaller than the selected light quantity threshold Lb is obtained. If detected, it is determined whether or not the detected light quantity is continuously detected (step S13 in FIG. 6). If the detected light quantity is continuously detected, the first detected cavity Ct is defined as the component storage cavity Ct. A determination is made (step S14 in FIG. 6), and the start position of the component storage cavity Ct is obtained and stored in the storage unit 99 (step S15 in FIG. 6).
- the tape feed control unit 91 receives a calculation completion signal for the pitch Pc of the cavity Ct from the interval calculation unit 96, the first gear motor 62a is driven to rotate faster, and the carrier tape Tc, for example, the pitch of the cavity Ct is set.
- the feed amount is Pc.
- the component detection unit 98 continues to input the detected light amount for each pitch feed of the carrier tape Tc from the light amount detection unit 93, and when the light amount smaller than the selected light amount threshold Lb is continuously detected, the first detected cavity Ct is detected.
- the component storage cavity Ct is determined, and the start position of the component storage cavity Ct is obtained from the pitch Pc of the cavity Ct and stored in the storage unit 99.
- control device 59 positions the cutting position of the carrier tape Tc at the cutting position based on the stored start position of the component storage cavity Ct and the pitch Pc of the cavity Ct, and performs the splicing operation of cutting, taking in, and joining. .
- the tape automatic detection device of the present invention feeds a carrier tape Tc having a plurality of empty cavities Ct provided at a tip end side with a cavity Ct for storing components at a constant interval Pc at a predetermined pitch, and more than a predetermined pitch.
- the tape feeding devices 50 and 51 having a plurality of origin positions (positions of the plurality of first and second teeth 67a and 67b) at the interval Pc and the origins for detecting the plurality of origin positions of the tape feeding devices 50 and 51, respectively.
- the position detection devices 63a and 63b, the light amount detection devices 52 and 53 for transmitting light to the carrier tape Tc and detecting the transmitted light amount, and the leading end Th of the carrier tape Tc sent by the tape feeding devices 50 and 51 are detected.
- a tip detection unit 94 that detects based on the amount of light detected by the devices 52 and 53. Further, the first position of the tape feeding devices 50 and 51 when the leading end detection unit 94 detects the leading end of the carrier tape Tc (the distance Pc / 4 after the first tooth 67ad1 is detected by the first origin position detecting device 63a).
- a reference position determination unit 95 that determines a tape reference position (position of the feed hole Hcd0) having a fixed positional relationship with the first origin position, and after the determination of the tape reference position by the reference position determination unit 95, the light amount detection device 52, And an interval calculation unit 96 for calculating the interval of the cavity Ct based on the detection period of the empty cavity Ct by 53.
- the reference position of the carrier tape Tc having a fixed positional relationship with the first origin position of the tape feeders 50 and 51 is determined, and thereafter the light quantity is detected to calculate the interval between the cavities Ct. Therefore, the interval between the cavities Ct can be easily obtained. Accordingly, the cycle time in the automatic splicing device 20 to which the tape automatic detection device is applied can be shortened to improve the production efficiency.
- the reference position determination unit 95 includes a first position of the tape feeders 50 and 51, a first origin position of the tape feeders 50 and 51, a feed amount of the carrier tape Tc from the first origin position to the first position, and Since the tape reference position is determined based on the interval between the adjacent origin positions, the tape reference position can be easily determined.
- the tape feeders 50 and 51 are capable of feeding a plurality of types of carrier tapes Tc and Tcc having different intervals between the cavities Ct, and the leading edge detection unit 94 includes a plurality of types of carrier tapes.
- the tip of the carrier tape Tc is detected when the carrier tape Tc is sent with a half of the minimum interval between the cavities Ct of Tc and Tcc as a predetermined pitch Pc / 2.
- the leading end detection unit 94 can reliably detect the leading end even if the carrier tape Tc is of a different type.
- the tape automatic detection device determines a threshold value for determining a predetermined threshold value La for discriminating between the empty cavity Ct and the non-empty cavity Ct based on the light amount detected by the light amount detection devices 52 and 53 of the empty cavity Ct. Part 97. Accordingly, since the empty cavity Ct and the non-empty cavity Ct can be discriminated based on whether or not the detected light quantity exceeds the threshold value La, the cavity Ct in which the component e is accommodated can be reliably detected.
- the threshold value determination unit 97 selects a predetermined threshold value La from a plurality of preset threshold values La and Lb based on the light amount detected by the light amount detection devices 52 and 53 of the empty cavity Ct. Thereby, it is possible to discriminate empty cavities Ct, Ctt and non-empty cavities Ct, Ctt for a plurality of types of carrier tapes Tc, Tcc, and the like.
- the tape feeders 50 and 51 determine a predetermined pitch for feeding the carrier tape Tc at the tape reference position by the reference position determination unit 95 after the tape reference position is located at the detection position of the light quantity detection devices 52 and 53.
- the interval calculation unit 96 sets the interval between the cavities Ct when the tape feeders 50 and 51 send the carrier tape Tc with the second pitch Pc as a predetermined pitch, which is larger than the first pitch Pc / 2 before the determination. Calculate. Thereby, the cycle time of tape detection can be improved.
- the tape automatic detection device stores the component e in the cavity Ct when a phenomenon in which the light amount detected by the light amount detection devices 52 and 53 continues to be less than or equal to the threshold value La after the interval calculation unit 96 calculates the interval of the cavity Ct.
- a component detection unit 98 that detects that the operation has been performed is provided. Thereby, since it can judge by the frequency
- the tape feeders 50 and 51 use the predetermined pitch Pc at which the carrier tape Tc is fed after the interval calculation unit 96 calculates the interval of the cavity Ct as the calculated interval of the cavity Ct, and the component detection unit 98. Detects the storage of the component e when the tape feeders 50 and 51 feed the carrier tape Tc with the interval between the cavities Ct set to a predetermined pitch Pc. Thereby, the start position of the cavity Ct in which the component e is accommodated can be easily and reliably obtained.
- a carrier tape Tc having a plurality of empty cavities Ct provided on the front end side with a plurality of empty cavities Ct provided at a predetermined interval is provided with a plurality of origin positions at a predetermined pitch. Based on the amount of transmitted light detected by transmitting the light to the carrier tape Tc at the tape feeding process of feeding at a pitch equal to or less than a predetermined pitch by the feeding devices 50 and 51 and the tip of the carrier tape Tc sent by the tape feeding devices 50 and 51. And a tip detection step for detecting.
- an interval calculation step of calculating the interval of the cavity Ct based on the detected period of the transmitted light amount.
- the automatic splicing device has been described as an example to which the automatic tape detection device is applied.
- it can be applied to an automatic tape setting device that automatically sets a carrier tape on a tape feeder. It is.
- the tape automatic detection device is applied when the carrier tape wound around the reel mounted on the tape feeder is automatically pulled out and the component storage cavity at the tip of the carrier tape is positioned at the component supply position of the tape feeder. To do.
- an outline of the automatic tape setting apparatus will be described.
- the automatic tape setting device 30 includes a feeding device 31 that transports the carrier tape Tc drawn from the reel 11, a guide 32 that guides the carrier tape Tc that is transported, and the feeding device 31 and the guide. 32, a support plate 33 that supports 32, and a pedestal 34 on which the support plate 33 is placed and fixed.
- the operator inserts the feeding device 31 and the guide 32 into the tape feeder 10 held on a feeder holding base (not shown). Then, the carrier tape Tc is pulled out from the reel 11 of the tape feeder 10, and the tip of the carrier tape Tc is brought to the tape inlet 32aa of the guide 32a.
- the gear motors 38a, 38b, 38c, 38d and the motor of the tape feeder 10 are started to be driven, and the drive rollers 36a, 36b, 36c, 36d and the sprocket 14 of the tape feeder 10 are started. Start rotating.
- the carrier tape Tc is sent out by the driving rollers 36a, 36b, 36c, 36d and guided by the guides 32a, 32b. .
- the component storage cavity Ct at the tip of the carrier tape Tc is detected by the automatic tape detection device, and the component storage cavity Ct is positioned at the component supply position 12 of the tape feeder 10.
- the tape automatic detection device of the present invention can be applied to a device that automatically detects tape information and automatically positions the tape at a predetermined position.
- 20 Automatic splicing device
- 50 First tape feeding device
- 51 Second tape feeding device
- 63a First origin position detecting device
- 63b Second origin position detecting device
- 52 First light amount detecting device
- 53 Second light quantity detection device
- 59 control device
- 94 tip detection unit
- 95 reference position determination unit
- 96 interval calculation unit
- 97 threshold determination unit
- 98 component detection unit
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Abstract
Description
本実施形態のテープの自動検知装置は、一定の間隔で部品収納用のキャビティが設けられるキャリアテープの情報、すなわちキャリアテープの有無、隣り合うキャビティ間のピッチ(間隔)、キャビティ内の部品の有無等を自動的に検知できる装置である。このテープの自動検知装置が適用される装置としては、例えば自動スプライシング装置がある。自動スプライシング装置は、部品実装機の部品供給装置に装着されたテープフィーダに装着されている現リールに巻回されたキャリアテープの終端部を、交換する次リールに巻回されたキャリアテープの始端部に自動的に接続する装置である。
先ず、キャリアテープ及びテープフィーダについて説明する。
図3A,3Bに示すように、キャリアテープTcは、所定の幅で細長く形成され、長手方向に複数のキャビティCtが所定のピッチPtで形成される。これらのキャビティCtには、回路基板に実装される部品eがそれぞれ収納される。キャビティCtの上部は開口され、キャリアテープTcの表面に貼り付けられるトップテープTtによって覆われる。キャリアテープTcの幅方向の一端側には、長手方向に送り穴Hcが一定のピッチPcで形成される。なお、本実施形態では、先端側に部品eが収納されていない複数の空のキャビティCtの部分が連なるキャリアテープTcが用いられる。
次に、自動スプライシング装置について説明する。
図1に示すように、自動スプライシング装置20は、箱状の筺体21と、筺体21の上面を上下方向(図示矢印方向)に開閉可能な蓋体22とを備える。自動スプライシング装置20は、図略の台車等に載置されて部品実装機の部品供給装置に装着されたフィーダ間を移動可能に構成される。蓋体22は、スプライシング時には閉じられ、スプライシング後のキャリアテープTcの取り出し時に開かれる。
次に、自動スプライシング装置20における本実施形態のテープの自動検知装置について詳述する。図2に示すように、第1、第2テープ送り装置50,51の第1、第2搬送経路60a,60bは、キャリアテープTcの幅より若干広い幅を有し、筺体21の両側面に設けられる第1、第2テープ入口84a,84bから第1、第2切断装置54,55の後述する第1、第2カッター68a,68bによるキャリアテープTcの第1、第2切断位置Lf1,Lf2まで一直線に延びる溝状に形成される。
第1、第2テープ検知装置64a,64bは、例えば、タッチセンサであり、筺体21の両側面に設けられた第1、第2テープ入口84a,84bからキャリアテープTcが挿入されたことを、キャリアテープTcの接触により検知するセンサである。
光量検出部93は、テープ送り制御部91からキャリアテープTcのピッチ送り信号を入力したら、ピッチ送り毎に第1、第2光量検出装置52,53から光量の検出信号を入力して先端検知部94、間隔演算部96、閾値決定部97及び部品検知部98に入力する。
先端検知部94は、光量検出部93から入力した光量の検出信号に基づいて、第1、第2テープ送り装置50,51で送られるキャリアテープTcの先端を検知し、当該検知信号を基準位置決定部95に入力する。
部品検知部98は、間隔演算部96からキャビティCtのピッチPcの算出信号を入力した後、光量検出部93から入力した検出光量及び閾値決定部97から入力した閾値に基づいて、キャリアテープTcの部品収納キャビティCtを検出し、当該部品収納キャビティCtの開始位置を記憶部99に記憶する。
次に、自動スプライシング装置20におけるテープの自動検知動作について図6のフローチャートを参照して説明する。なお、自動スプライシング装置20の両側から挿入されるキャリアテープTcに対する自動検知動作は同一であるため、以下の説明では図2の右側から挿入される図3A,3Bに示すキャリアテープTcに対する自動検知動作を説明する。
本発明のテープの自動検知装置は、一定の間隔Pcで部品収納用のキャビティCtが設けられ先端側に複数の空のキャビティCtを有するキャリアテープTcを所定のピッチで送り、且つ、所定ピッチ以上の間隔Pcで複数の原点位置(複数の第1、第2歯67a,67bの位置)を備えるテープ送り装置50,51と、テープ送り装置50,51の複数の原点位置のそれぞれを検出する原点位置検出装置63a,63bと、キャリアテープTcに対し光を透過させて透過光量を検出する光量検出装置52,53と、テープ送り装置50,51で送られるキャリアテープTcの先端Thを、光量検出装置52,53による検出光量に基づいて検知する先端検知部94と、を備える。さらに、先端検知部94によりキャリアテープTcの先端が検知された時のテープ送り装置50,51の第一位置(第1歯67ad1が第1原点位置検出装置63aで検出されてから距離Pc/4だけ回転した位置)、及び、先端検知部94による先端検知直前におけるテープ送り装置50,51の第一原点位置(第1歯67ad1が第1原点位置検出装置63aで検出された位置)に基づいて、第一原点位置と一定の位置関係を有するテープ基準位置(送り穴Hcd0の位置)を決定する基準位置決定部95と、基準位置決定部95によるテープ基準位置の決定後に、光量検出装置52,53による空のキャビティCtの検出周期に基づいてキャビティCtの間隔を演算する間隔演算部96と、を備える。
上述の実施形態では、テープの自動検知装置が適用される装置として自動スプライシング装置を例に説明したが、例えばテープフィーダにキャリアテープを自動的にセットするテープの自動セット装置に適用することも可能である。すなわち、テープの自動検知装置は、テープフィーダに装着したリールに巻回されているキャリアテープを自動的に引き出し、キャリアテープの先端の部品収納キャビティをテープフィーダの部品供給位置に位置決めする際に適用する。ここで、テープの自動セット装置の概略について説明する。
Claims (9)
- 一定の間隔で部品収納用のキャビティが設けられ先端側に複数の空のキャビティを有するテープを所定のピッチで送り、且つ、前記所定ピッチ以上の間隔で複数の原点位置を備えるテープ送り機構と、
前記テープ送り機構の複数の原点位置のそれぞれを検出する原点位置検出器と、
前記テープに対し光を透過させて透過光量を検出する光量検出器と、
前記テープ送り機構で送られる前記テープの先端を、前記光量検出器による検出光量に基づいて検知する先端検知部と、
前記先端検知部により前記テープの先端が検知された時の前記テープ送り機構の第一位置、及び、前記先端検知部による先端検知直前における前記テープ送り機構の第一原点位置に基づいて、前記第一原点位置と一定の位置関係を有するテープ基準位置を決定する基準位置決定部と、
前記基準位置決定部による前記テープ基準位置の決定後に、前記光量検出器による前記空のキャビティの検出周期に基づいて前記キャビティの間隔を演算する間隔演算部と、
を備える、テープの自動検知装置。 - 前記基準位置決定部は、前記テープ送り機構の第一位置、前記テープ送り機構の第一原点位置、前記第一原点位置から前記第一位置までの前記テープの送り量、及び、隣り合う原点位置の間隔に基づいて、前記テープ基準位置を決定する、請求項1に記載のテープの自動検知装置。
- 前記テープ送り機構は、前記キャビティの間隔が異なる複数種のテープを送ることが可能であり、
前記先端検知部は、前記テープ送り機構が前記複数種のテープのうちキャビティの最小間隔の半分を前記所定のピッチとして前記テープを送る時に前記テープの先端を検知する、請求項1又は2に記載のテープの自動検知装置。 - 前記テープの自動検知装置は、前記空のキャビティの前記光量検出器による検出光量に基づいて、前記空のキャビティと空以外のキャビティとを判別する所定の閾値を決定する閾値決定部を備える、請求項1-3の何れか一項に記載のテープの自動検知装置。
- 前記閾値決定部は、前記空のキャビティの前記光量検出器による検出光量に基づいて、予め設定されている複数の閾値の中から前記所定の閾値を選択する、請求項4に記載のテープの自動検知装置。
- 前記テープ送り機構は、前記テープ基準位置が前記光量検出器の検出位置に位置する時以降において、前記テープを送る前記所定のピッチを、前記基準位置決定部による前記テープ基準位置の決定前の第一ピッチよりも大きな第二ピッチとし、
前記間隔演算部は、前記テープ送り機構が前記第二ピッチを前記所定ピッチとして前記テープを送る時に前記キャビティの間隔を演算する、請求項1-5の何れか一項に記載のテープの自動検知装置。 - 前記テープの自動検知装置は、前記間隔演算部による前記キャビティの間隔の演算後において前記光量検出器による検出光量が前記閾値以下となる現象が連続したとき、前記キャビティに前記部品が収納されていると検知する部品検知部を備える、請求項5又は6に記載のテープの自動検知装置。
- 前記テープ送り機構は、前記間隔演算部が前記キャビティの間隔を演算した時以降において、前記テープを送る前記所定のピッチを、演算された前記キャビティの間隔とし、
前記部品検知部は、前記テープ送り機構が前記キャビティの間隔を前記所定ピッチとして前記テープを送る時に前記部品の収納を検知する、請求項7に記載のテープの自動検知装置。 - 一定の間隔で部品収納用のキャビティが設けられ先端側に複数の空の前記キャビティを有するテープを所定ピッチの間隔で複数の原点位置を備えるテープ送り機構で前記所定ピッチ以下のピッチで送るテープ送り工程と、
前記テープ送り機構で送られる前記テープの先端を、前記テープに対し光を透過させて検出した透過光量に基づいて検知する先端検知工程と、
前記先端検知工程により前記テープの先端が検知された時の前記テープ送り機構の第一位置、及び、前記先端検知工程による先端検知直前における前記テープ送り機構の第一原点位置に基づいて、前記第一の原点位置と一定の位置関係を有するテープ基準位置を決定する基準位置決定工程と、
前記基準位置決定工程による前記テープ基準位置の決定後に、前記空のキャビティに対し光を透過させて検出した透過光量の検出周期に基づいて前記キャビティの間隔を演算する間隔演算工程と、
を備える、テープの自動検知方法。
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Also Published As
Publication number | Publication date |
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US10462951B2 (en) | 2019-10-29 |
EP3232757A1 (en) | 2017-10-18 |
CN107006146A (zh) | 2017-08-01 |
JPWO2016092706A1 (ja) | 2017-09-21 |
EP3232757A4 (en) | 2018-08-22 |
JP6420364B2 (ja) | 2018-11-07 |
US20180228067A1 (en) | 2018-08-09 |
EP3232757B1 (en) | 2022-08-31 |
CN107006146B (zh) | 2019-08-20 |
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