JP2020181868A - Component mounting device and automatic pitch detection method - Google Patents

Abstract

To achieve both reduction of missing parts and shortening of parts mounting time when feeding a tape by accurately detecting a pitch between pockets formed on a carrier tape.SOLUTION: A component mounting device includes a tape transmission unit for transmitting a carrier tape, a pocket detecting unit for detecting at least adjacent first pocket and second pocket of multiple pockets capable of storing parts on the carrier tape, a tape transmission number detection unit for detecting the number of times the tape transmission unit transmits the carrier tape as a transmission number. The tape transmission number detection unit calculates a pitch between adjacent pockets among the pockets formed on the carrier tape on the basis of the number of transmissions before detecting the first pocket and the second pocket.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a component mounting device and an automatic pitch detection method.

In Patent Document 1, when a certain amount is sent after switching from the first carrier tape to the second carrier tape, the first component stored in the second carrier tape is placed in the component supply position by using the image pickup device and the detection sensor. There are known component mounting devices that automatically position. In this component mounting device, carrier tapes are switched by a tape feeder that can be continuously fed to component supply positions without splicing. In addition, this component mounting device recognizes the center position of the component by the image pickup device before the carrier tape is switched and sucks the first component, and corrects the position of the moving table to suck the center position of the component. be able to. Therefore, it is possible to correct the positional deviation due to individual differences of the carrier tape and accurately adsorb the center position of the component, so that the adsorption error can be suppressed with almost no increase in the cycle time.

International Publication No. 2015/029123

However, in the conventional component mounting apparatus including the above-mentioned Patent Document 1, when the carrier tape itself is switched, the length of the switched carrier tape is switched to a certain amount regardless of the presence or absence of splicing for connecting the carrier tapes. The pitch of the pockets on the carrier tape could be different. Therefore, for example, if carrier tapes having different pitches between pockets for storing parts are used even if the same parts are stored, the pocket positions will shift with respect to the length of feeding a certain amount of carrier tape in the component mounting device. , There was a possibility that the parts could not be recognized.

Also, when the component mounting device starts or restarts mounting, it differs from the pitch between the carrier tape pockets used at the end of the previous mounting (that is, the tape feed length set during the previous mounting process). Carrier tapes with pitch were sometimes used. Therefore, in the component mounting device, if the pitch between the pockets is small with respect to the length of feeding a fixed amount of carrier tape, parts may be missed, while the parts may be missed with respect to the length of feeding a fixed amount of carrier tape. When the pitch is long, there is a problem that a time loss occurs because the nozzle sucks the part where there is no part.

The present disclosure has been devised in view of the above-mentioned conventional circumstances, and accurately detects the pitch between pockets formed on the carrier tape, reduces the amount of missing parts when feeding the tape, and shortens the mounting time of the parts. It is an object of the present invention to provide a component mounting device and an automatic pitch detection method that achieve both.

The present disclosure includes a tape delivery unit that transmits a carrier tape, a pocket detection unit that detects at least adjacent first pockets and second pockets among a plurality of pockets capable of storing parts in the carrier tape, and the above-mentioned pocket detection unit. A tape transmission number detection unit that detects the number of times the carrier tape is transmitted by the tape transmission unit as the transmission number is provided, and the tape transmission number detection unit detects the first pocket and the second pocket. Provided is a component mounting device that calculates the pitch between adjacent pockets among the plurality of pockets formed on the carrier tape based on the number of transmissions between them.

Further, the present disclosure is an automatic pitch detection method for detecting the pitch between pockets formed in a carrier tape having a plurality of pockets capable of accommodating parts, wherein the carrier tape is delivered and the delivered carrier is delivered. The tape is imaged by an imaging device, and at least adjacent first and second pockets among the plurality of pockets are detected based on the captured image captured by the imaging device, and after the first pocket is detected. , The number of times the carrier tape is sent out before the second pocket is detected is detected as the number of times of sending, and based on the detected number of times of sending, the pitch between adjacent pockets among the plurality of pockets. Provide a pitch automatic detection method for calculating.

According to the present disclosure, the pitch between pockets formed on the carrier tape can be accurately detected, and it is possible to reduce the number of missing parts and shorten the mounting time of parts when the tape is fed.

Top view of the component mounting device according to the first embodiment Explanatory drawing of cover tape peeling operation and component take-out operation of the component mounting apparatus according to the first embodiment. The figure which shows the structural example of the control part of the component mounting apparatus which concerns on Embodiment 1. The figure which shows the state of the imaging of the substrate recognition camera which concerns on Embodiment 1. The figure which shows the carrier tape seen from the substrate recognition camera which concerns on Embodiment 1. Explanatory drawing of component storage pocket detection processing of carrier tape which concerns on Embodiment 1. Explanatory drawing of component storage pocket detection processing of carrier tape which concerns on Embodiment 1. The figure which shows an example of the splicing of the carrier tape which concerns on Embodiment 1. The figure which shows an example of the splicing of the carrier tape which concerns on Embodiment 1. A flowchart showing an example of the pitch calculation process of the control unit according to the first embodiment.

Hereinafter, embodiments in which the component mounting device and the pitch automatic detection method according to the present disclosure are specifically disclosed will be described in detail with reference to the drawings as appropriate. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of already well-known matters and duplicate explanations for substantially the same configuration may be omitted. This is to avoid unnecessary redundancy of the following description and to facilitate the understanding of those skilled in the art. It should be noted that the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

(Embodiment 1)
FIG. 1 is a plan view of the component mounting device 1 according to the first embodiment. In the following description, the "X direction" shown in FIG. 1 indicates the left-right direction, and the "Y direction" indicates the front-rear direction. For example, the substrate 3 is carried out in the X direction, and the tape feeders 5 juxtaposed at both ends in both front and rear directions are sent out in the Y and −Y directions.

The component mounting device 1 includes a base 1a, a board transfer mechanism 2, a component supply unit 4, a mounting head 8, a component recognition camera 9, a board recognition camera 10, and a splicing recognition camera 22. Have.

One Y-axis moving table 6 and two X-axis moving tables 7 having a linear drive mechanism at one end of the upper surface of the base 1a in the X direction are coupled to the base 1a. Each of the two X-axis moving tables 7 is equipped with a mounting head 8 (see FIG. 2) having a suction nozzle 8a at the lower end.

The substrate transport mechanism 2 arranges the substrate 3 while transporting it in the X direction at a mounting position for mounting the component P.

The component supply unit 4 sends out each of the plurality of carrier tapes 14 (see FIG. 2) by a fixed amount length (hereinafter, referred to as a predetermined pitch) and sends the component P to the component take-out position 5a (see FIG. 2). Each of the plurality of tape feeders 5 to be supplied is detachably arranged side by side.

The mounting head 8 is taken out by vacuum sucking the component P from the tape feeder 5 using the suction nozzle 8a provided at the lower end portion, and the component P sucked and held at a predetermined position on the substrate 3 is mounted. The suction nozzle 8a sucks and holds the component P when the mounting head 8 moves in the Z direction (in other words, the height direction or the vertical direction) shown in FIG.

The component recognition camera 9 is arranged between the component supply unit 4 and the substrate transfer mechanism 2. When the mounting head 8 from which the component P is taken out moves above the component recognition camera 9, the component recognition camera 9 takes an image of the component P sucked and held by the suction nozzle 8a. The captured image data is input to the control unit 30 (see FIG. 3).

The substrate recognition camera 10 as an example of the imaging unit is mounted on the lower surface side of each of the X-axis movement table 7 so as to be movable integrally with the mounting head 8 and the splicing recognition camera 22. The substrate recognition camera 10 takes an image of the component storage pocket 15b formed in the carrier tape 14 that is sent out every fixed amount length.

The splicing recognition camera 22 is mounted on the lower surface side of each of the X-axis movement table 7 so as to be movable integrally with the mounting head 8 and the board recognition camera 10. The splicing recognition camera 22 is located near the splicing tape 17 (see FIGS. 5A and 5B) as an example of the splice member joining each of the two carrier tapes 14, or the two carrier tapes 14 The tape switching holes 18a and 18b (see FIG. 6A) indicating the start and end of the tape switching holes are imaged. When the carrier tape 14 has either one of the tape switching holes 18a and 18b, the splicing recognition camera 22 images one of the tape switching holes 18a and 18b formed in the carrier tape 14.

FIG. 2 is an explanatory diagram of a cover tape peeling operation and a component taking-out operation of the component mounting device 1 according to the first embodiment. FIG. 2 shows a cross-sectional view of the tape feeder 5 near the component take-out position 5a. In the following description, the "Y direction" shown in FIG. 2 indicates the same front-rear direction as the "Y direction" shown in FIG. 1, and the "Z direction" indicates a height direction or a vertical direction, respectively. For example, the tape feeders 5 arranged at both ends in both front and rear directions are sent out in the Y and −Y directions, and the mounting head 8 that takes out the component P from the tape feeder 5 moves from the Z direction to the −Z direction and the component P. Take out.

In the component mounting device 1, the pitch feeding operation is executed by the tape feeder 5, the mounting head 8, the pressing member 13, the carrier tape 14, and the tape feeding mechanism 20.

The tape feeder 5 is configured to have a tape traveling path 5b for feeding the carrier tape 14 in the Y direction in which the component take-out position 5a for taking out the component P is located. The tape traveling path 5b has a function of guiding the carrier tape 14 in the Y direction from the lower surface (in other words, the −Z direction). Further, the component take-out position 5a indicates a position for taking out the component P from the component storage pocket 15b formed in the carrier tape 14.

The pressing member 13 is located on the upper surface (Z direction) of the carrier tape 14 located on the tape traveling path 5b, is located in front of the sprocket 21 (-Y direction), and is an opening for taking out the component P. A unit 13a is provided. The pressing member 13 has a function of guiding from the upper surface when the carrier tape 14 is delivered in the Y direction at a predetermined pitch.

The opening 13a is an opening for taking out the component P stored in the component storage pocket 15b and for the substrate recognition camera 10 to take an image of the component storage pocket 15b. The opening 13a is provided with a peeling portion 13b at the edge. The peeling portion 13b has a function of peeling the cover tape 16 from the carrier tape 14 in conjunction with the delivery of the carrier tape 14 in the Y direction among the base tape 15 and the cover tape 16 constituting the carrier tape 14 described later. ..

The carrier tape 14 is a base tape 15 having a plurality of feed holes 15a for pitch feeding and a plurality of component storage pockets 15b formed in a concave shape so as to be able to accommodate the component P, and a component storage pocket 15b. It is composed of a cover tape 16 that covers the upper surface. The carrier tape 14 may have tape switching holes 18a and 18b (see FIG. 6A) indicating the start end and the end of the carrier tape 14, respectively. The carrier tape 14 may be formed by having either one of the tape switching holes 18a and 18b.

The base tape 15 is formed so that each of the plurality of feed holes 15a and the plurality of component storage pockets 15b are adjacent to each other at regular intervals. The intervals at which each of the plurality of feed holes 15a and each of the plurality of component storage pockets 15b are formed may be the same or different.

The cover tape 16 is formed of a single piece of tape, and covers the component P stored in the component storage pocket 15b over the entire carrier tape 14. The cover tape 16 is folded back at the peeling portion 13b provided in the opening 13a, and is pulled and peeled in the direction opposite to the tape feeding direction (arrow a direction) opposite to the direction in which the carrier tape 14 is fed. As a result, the cover tape 16 is peeled off by the peeling portion 13b, the component P stored in the component storage pocket 15b is exposed, and the carrier tape 14 can be taken out by the suction nozzle 8a.

The tape feed mechanism 20 includes a rotation drive mechanism (not shown) and a sprocket 21 driven by the rotation drive mechanism. The sprocket 21 is driven by a rotary drive mechanism including a motor, and delivers the carrier tape 14 in the Y direction at a predetermined pitch. The sprocket 21 has a plurality of feed pins 21a at predetermined intervals. Each of the plurality of feed pins 21a engages with each of the plurality of feed holes 15a provided in the base tape 15, and feeds the carrier tape 14 in the Y direction at a predetermined pitch as the rotation drive mechanism rotates. It should be noted that the predetermined intervals transmitted by the plurality of feed pins 21a and the predetermined intervals of the plurality of component storage pockets 15b formed on the base tape 15 (in other words, the carrier tape 14) do not necessarily match. Needless to say, it is not.

The mounting head 8 and the suction nozzle 8a provided on the mounting head 8 move up and down in the Z and −Z directions (arrow b) at the position of the component take-out position 5a in the opening of the opening 13a. The suction nozzle 8a comes into contact with the component P at a predetermined suction position, and the component P is taken out by vacuum suction. The substrate recognition camera 10 that moves integrally with the mounting head 8 photographs the component take-out position 5a that is delivered at a predetermined pitch in the opening of the opening 13a. Further, the splicing recognition camera 22 that moves integrally with the mounting head 8 is similarly located in the vicinity of the splicing tape 17 or the splicing tape 17 that joins the start and end ends of the two carrier tapes 14 in the opening of the opening 13a. The located tape switching holes 18a and 18b (see FIG. 6A) are imaged. When the splicing tape 17 has a chip (not shown) built-in, the splicing recognition camera 22 may be a sensor capable of detecting the chip built in the splicing tape 17.

FIG. 3 is a diagram showing a configuration example of the control unit 30 of the component mounting device 1 according to the first embodiment. The control unit 30 has a configuration including at least a storage unit 31, a mechanism drive unit 32, an image pickup processing unit 34, and a pitch calculation unit 35. The control unit 30 can control or receive data from the board transfer mechanism 2, the component mounting mechanism 11, the tape feed mechanism 20, the component recognition camera 9, the splicing recognition camera 22, and the board recognition camera 10, respectively. Is externally connected to.

The storage unit 31 is, for example, a RAM (Random Access Memory) as a work memory used when executing each process of the control unit 30, and a ROM (Read Only Memory) for storing a program and data defining the operation of the control unit 30. And have. Data or information generated or acquired by the control unit 30 is temporarily stored in the RAM. A program that defines the operation of the control unit 30 (for example, a method of detecting a pocket from an captured image received by the image pickup processing unit 34) is written in the ROM. Further, the storage unit 31 stores the mounting data 31a, the pocket image data 31b, the pitch transmission data 31c, and the like, and the data captured or detected by the externally connected component recognition camera 9, the splicing recognition camera 22, and the substrate recognition camera 10. Remember.

The mounting data 31a is data stored for each of the various substrates 3 and for mounting the various components P. The mounting data 31a includes data on the board 3 on which the components are mounted (for example, the size of the board 3), data on the component P mounted on the board 3 (for example, type or shape), and data on the mounting position of the component P. (For example, the mounting direction or mounting coordinates, etc.) and the data of the carrier tape 14 (for example, the type or the number of stored parts, etc.) are included. The control unit 30 sends a control signal for mounting various components P for each of the various boards 3 based on the stored mounting data 31a to the board transfer mechanism 2, the component mounting mechanism 11, and the tape feed via the mechanism drive unit 32. It is transmitted to the mechanism 20. The mounting data 31a is input and stored from the outside by a user or the like.

The pocket image data 31b is learning data for detecting whether or not the component storage pocket 15b is included in the captured image of the component extraction position 5a captured by the substrate recognition camera 10. The pocket image data 31b is data capable of detecting the component storage pockets 15b having various shapes and sizes. In other words, the pocket image data 31b is a component in the carrier tape regardless of which of a plurality of types of carrier tapes 14 having different shapes, sizes, and intervals (pitches) between the component storage pockets 15b are used. It is used to detect the storage pocket 15b.

The pitch transmission data 31c is data relating to a pitch for the mechanism driving unit 32 to transmit the carrier tape 14 to the tape feed mechanism 20 at a predetermined pitch. The pitch transmission data 31c has data of a plurality of predetermined pitches based on the minimum pitch that can be controlled by the mechanism drive unit 32, and these plurality of data are obtained by multiplying the minimum pitch by a multiple of each. It is the pitch to be. The minimum pitch of the pitch transmission data 31c according to the first embodiment is, for example, 2 mm included in the imaging field of view 10a of the substrate recognition camera 10 (see FIG. 5A), but the imaging field of view 10a of the substrate recognition camera 10 For example, 1 mm or the like contained therein may be used.

The mechanism driving unit 32 as an example of the tape feeding unit controls the substrate transport mechanism 2, the component mounting mechanism 11, and the tape feeding mechanism 20. The mechanism drive unit 32 controls the board transfer mechanism 2 to move the board 3 to the component mounting position. The mechanism drive unit 32 controls the component mounting mechanism 11 based on the mounting data 31a to take out the component P from the component take-out position 5a and mount the component P to be transferred and mounted on the positioned substrate 3. The mechanism drive unit 32 controls the tape feed mechanism 20 based on the pitch transmission data 31c output by the control unit 30 to drive the rotation drive mechanism (not shown) and the sprocket 21 driven by the rotation drive mechanism. The carrier tape 14 is sent out at a predetermined pitch.

Further, in driving and controlling the rotation drive mechanism and the sprocket 21, when the component mounting device 1 switches the carrier tape 14, or when the component mounting device 1 starts or restarts the mounting of the component P, the mechanism drive unit 32 uses the carrier tape. 14 is delivered at the minimum pitch (eg, 2 mm). On the other hand, when the pitch of the plurality of component storage pockets 15b is calculated by the pitch calculation unit 35 described later, the mechanism drive unit 32 drives and controls the rotation drive mechanism and the sprocket 21 based on the calculated pitch. The minimum pitch that the mechanism driving unit 32 can deliver is not limited to 2 mm, and may be, for example, 1 mm.

The image pickup processing unit 34 has a splicing detection unit 34a and a pocket detection unit 34b as an example of the recognition unit as a functional configuration.

The splicing detection unit 34a detects the detection data of the splicing tape 17 included in the captured image or the chip (not shown) built in the splicing tape 17 based on the captured image captured by the splicing recognition camera 22. .. The splicing detection unit 34a detects that the carrier tape 14 is switched by detecting the detection data. When the splicing detection unit 34a detects that the carrier tape 14 is switched, the splicing detection unit 34a outputs a pitch calculation signal for calculating the pitch to the control unit 30. When the pitch calculation signal is input from the splicing detection unit 34a, the control unit 30 outputs a control signal so as to send the carrier tape 14 to the mechanism drive unit 32 at the minimum pitch. As a result, the control unit 30 can recalculate the pitch at a timing when the predetermined pitch at which the carrier tape 14 is sent out and the pitch between the plurality of component storage pockets 15b may differ from each other. Therefore, in the component mounting device 1, since the control unit 30 recalculates the pitch, it is possible to prevent the occurrence of time loss due to missing parts and unnecessary mistakes in taking out the parts.

Further, when the splicing recognition camera 22 is located near the splicing tape 17 and images the tape switching holes 18a and 18b indicating the start end and the end of the two carrier tapes 14, the splicing detection unit 34a recognizes the splicing. The switching of the carrier tape 14 may be detected by detecting each of the tape switching holes 18a and 18b included in the captured image of the camera 22. When the carrier tape 14 has either one of the tape switching holes 18a and 18b, the splicing detection unit 34a may detect either one of the formed tape switching holes 18a and 18b.

Further, the pocket detection unit 34b executes the pocket detection process when the captured image captured by the substrate recognition camera 10 is input. The pocket detection unit 34b detects the component storage pocket 15b included in the captured image based on the pocket image data 31b. When the image pickup processing unit 34 detects the component storage pocket 15b from the captured image, it outputs the captured image and the imaging time to the pitch calculation unit 35. Further, these captured images may be stored in the storage unit 31 as pocket image data 31b together with the imaging time or the transmission time when the carrier tape 14 is transmitted. The pocket detection unit 34b may detect the component P stored in the component storage pocket 15b.

When the captured image and the imaging time in which the component storage pocket 15b is detected are input from the imaging processing unit 34, the pitch calculation unit 35 stores and holds these as the information of the first pocket, and the carrier tape 14 Count the number of times the message is sent. When the pitch calculation unit 35 inputs the captured image and the imaging time in which the component storage pocket 15b is detected again from the imaging processing unit 34 after inputting the information of the first pocket, the pitch calculation unit 35 uses these as the information of the second pocket. Remember and keep.

Further, the pitch calculation unit 35 as an example of the tape transmission number detection unit starts counting the number of transmissions when the carrier tape 14 is transmitted at a predetermined pitch after the first pocket is detected, and detects the second pocket. Ends counting the number of transmissions. The pitch calculation unit 35 multiplies the number of times the carrier tape 14 is transmitted from the detection of the first pocket to the detection of the second pocket by the pitch transmission data 31c indicating a predetermined pitch transmitted by the mechanism drive unit 32. Then, the pitch between the parts storage pockets 15b is calculated.

Further, the pitch calculation unit 35 outputs the calculated pitch information to the mechanism drive unit 32. The mechanism driving unit 32 controls the tape feeding mechanism 20 so that the carrier tape 14 is fed based on the input pitch information.

4A and 4B are explanatory views of an imaging procedure of the substrate recognition camera 10 according to the first embodiment. FIG. 4A is a view when the substrate recognition camera 10 is located above (Z direction) the component take-out position 5a, and FIG. 4B is a view of the carrier tape 14 viewed from the board recognition camera 10. In FIGS. 4A and 4B, the component P is still stored on the upstream side (direction of arrow c) with the component removal position 5a as a boundary, the upper surface is covered with the cover tape 16, and the component P is taken out on the downstream side. Indicates the state. Note that FIG. 4B does not show the pressing member 13 for the sake of explanation.

The substrate recognition camera 10 takes an image of the component storage pocket 15b after the component P is taken out by the suction nozzle 8a. The captured image captured by the substrate recognition camera 10 is sent to the imaging processing unit 34 of the control unit 30.

FIG. 4A is a diagram showing a state of imaging of the substrate recognition camera 10 according to the first embodiment. FIG. 4B is a diagram showing a carrier tape 14 as seen from the substrate recognition camera 10 according to the first embodiment. The state in which the substrate recognition camera 10 images the component storage pocket 15b will be described with reference to FIGS. 4A and 4B. In FIG. 4A, the substrate recognition camera 10 is located above the component take-out position 5a, and in FIG. 4B, the pressing member 13 is omitted for convenience of explanation.

The carrier tape 14 stores the component P in the plurality of component storage pockets 15b, and is delivered at a predetermined pitch in the Y direction by the feed pin 21a of the sprocket 21 coupled with the feed hole 15a. When the cover tape 16 is peeled off by the peeling portion 13b provided at the edge of the opening 13a and sent to the position of the component taking-out position 5a, the carrier tape 14 is taken out by the suction nozzle 8a.

The board recognition camera 10 is located above the component take-out position 5a in the opening of the opening 13a, and images the component storage pocket 15b after the component P is taken out. Further, the wide field of view that the substrate recognition camera 10 can image is the range indicated by the image field of view 10a. The field of view of the imaging field of view 10a may be wide enough to accommodate at least one component storage pocket 15b, and may not be wide enough to image the feed hole 15a.

5A and 5B are explanatory views of the component storage pocket 15b detection process of the carrier tape 14 according to the first embodiment. The board recognition camera 10 that captures the component take-out position 5a first sends the component P1 to the component take-out position 5a to the component storage pocket 15ba (an example as the first pocket) and then to the component take-out position 5a. An image of the component storage pocket 15bb (an example as the second pocket) for accommodating the component P2 to be formed will be described with reference to FIGS. 5A and 5B. Note that the pressing member 13 is not shown in FIGS. 5A and 5B for the sake of explanation.

The carrier tape 14 stores the component P in the plurality of component storage pockets 15b, and is delivered at a predetermined pitch in the Y direction by the feed pin 21a of the sprocket 21 coupled with the feed hole 15a. Here, FIG. 5A shows a component storage pocket 15ba before being sent to the component take-out position 5a and taking out the component P1, and FIG. 5B shows before being sent to the component take-out position 5a and taking out the component P2. Parts storage pocket 15bb is shown.

The substrate recognition camera 10 images the component P1 and the component storage pocket 15ba located in the imaging field of view 10a before the component P1 stored in the component storage pocket 15ba is taken out. The substrate recognition camera 10 transmits the captured image captured by the component P1 and the component storage pocket 15ba to the pocket detection unit 34b.

In the board recognition camera 10, when the component storage pocket 15ba adjacent to the component storage pocket 15ba is delivered to the component extraction position 5a and positioned, the component P2 and the component storage located in the imaging field of view 10a before the component P2 is similarly ejected. The pocket 15bb is imaged. The substrate recognition camera 10 transmits the captured image of the component P2 and the component storage pocket 15bb to the pocket detection unit 34b.

6A and 6B are diagrams showing an example of splicing of the carrier tape 14 according to the first embodiment. The splicing tape 17 that joins the start end and the end of each of the two carrier tapes 14a and 14b splices the front and back surfaces of the carrier tapes 14a and 14b from both sides.

The carrier tape 14a is formed by adjacent component storage pockets 15b having a pitch D1 and has a tape switching hole 18a indicating the end of the tape near the end of the tape. The carrier tape 14b is formed by adjacent component storage pockets 15b having a pitch D2, and has a tape switching hole 18b indicating the start end of the tape near the start end of the tape.

Further, in the carrier tape 14, the vicinity of the start end and the vicinity of the end do not accommodate the component P because splicing is performed. Further, in the carrier tape 14, the vicinity of the start end and the vicinity of the end do not have the cover tape 16 because the component P is not housed.

The splicing tape 17 as an example of the splice member joins the start ends and ends of the two carrier tapes 14a and 14b, respectively. In the splicing tape 17, the front surfaces of the two carrier tapes 14a and 14b are joined so as to cover the upper surface of the component storage pocket 15b, and the back surfaces of the two carrier tapes 14a and 14b are attached to the lower surface of the component storage pocket 15b. Join to cover. Further, the splicing tape 17 may include a chip indicating that the carrier tape 14 is switched.

The splicing recognition camera 22 images the carrier tape 14 transmitted in the Y direction at a predetermined pitch at intervals based on the predetermined pitch, and transmits the captured image to the splicing detection unit 34a.

When the splicing detection unit 34a detects that the carrier tape 14a is switched to the carrier tape 14b, the splicing detection unit 34a outputs a pitch calculation signal for causing the control unit 30 to calculate the pitch. When the pitch calculation signal is input from the splicing detection unit 34a, the control unit 30 outputs a control signal so as to send the carrier tape 14 to the mechanism drive unit 32 at the minimum pitch. As a result, the control unit 30 recalculates the pitch between the component storage pockets 15b formed in the carrier tapes 14a and 14b, and outputs the recalculated pitch information to the mechanism drive unit 32. Therefore, in the component mounting device 1, the control unit 30 recalculates the pitch, so that it is possible to prevent the occurrence of time loss due to missing parts and unnecessary mistakes in taking out the parts.

FIG. 7 is a flowchart showing an example of the pitch calculation process of the control unit 30 according to the first embodiment.

In FIG. 7, the substrate recognition camera 10 that moves integrally with the mounting head 8 moves above the component take-out position 5a (St1).

The control unit 30 outputs a control signal for transmitting the carrier tape 14 at the minimum pitch (for example, 2 mm) by the mechanism drive unit 32, and transmits the carrier tape 14 at a pitch of 2 mm (St2).

The board recognition camera 10 takes an image of the component P and the component storage pocket 15b (St3) before the component P is taken out from the component storage pocket 15b sent to the position of the component take-out position 5a, and captures the captured image in the pocket detection unit. It is transmitted to 34b.

The pocket detection unit 34b included in the control unit 30 detects the component P and the component storage pocket 15b (in other words, the first pocket) included in the captured image based on the pocket image data 31b (St4). When the first pocket is not detected by the pocket detection unit 34b (St4, NO), the control unit 30 outputs a control signal to the mechanism drive unit 32 so as to transmit the carrier tape 14 to the mechanism drive unit 32 again at the minimum pitch. Further, when the pocket detection unit 34b detects the first pocket included in the captured image (St4, YES), the control unit 30 sends the carrier tape 14 to the mechanism drive unit 32 at the minimum pitch. A control signal is output to, and the carrier tape 14 is fed at a pitch of 2 mm (St5).

Further, when the pocket detection unit 34b detects the first pocket included in the captured image in step St5, the pitch calculation unit 35 determines the captured image data of the detected first pocket and the first pocket such as the imaging time. The information is stored and retained, and the number of times the carrier tape 14 is transmitted is counted as one.

In the board recognition camera 10, when the carrier tape 14 is delivered again at the minimum pitch, the component P and the component storage pocket 15b are taken out before the component P is taken out from the component storage pocket 15b delivered to the position of the component take-out position 5a. Is imaged (St6), and the captured image is transmitted to the pocket detection unit 34b.

The pocket detection unit 34b included in the control unit 30 detects the component P and the component storage pocket 15b (in other words, the second pocket) included in the captured image based on the pocket image data 31b (St7). When the component P and the second pocket are not detected by the pocket detection unit 34b (St7, NO), the control unit 30 outputs a control signal to the mechanism drive unit 32 again so as to send the carrier tape 14 at the minimum pitch. (St8).

When the pocket detection unit 34b does not detect the second pocket included in the captured image in step St8, the pitch calculation unit 35 counts the number of times the carrier tape 14 is transmitted as two times. That is, as the repeat processing Rp, the pitch calculation unit 35 sends the carrier tape 14 to be sent from the time when the first pocket is detected in step St4 to the time when the carrier tape 14 is sent in step St7 until the second pocket is detected. The number of times is repeated and counted.

When the pocket detection unit 34b detects the second pocket included in the captured image in step St7 (St7, YES), the pitch calculation unit 35 repeats the number of steps St6 to St8 in the repeat process Rp. The number of transmissions of the carrier tape 14 counted based on (in other words, the number of transmissions until the second pocket is detected) and the number of transmissions of the carrier tape 14 when the first pocket is detected in step St5 are added. To do. As a result, the pitch calculation unit 35 specifies the number of times the carrier tape 14 is transmitted from the detection of the first pocket to the detection of the second pocket (St9).

The pitch calculation unit 35 acquires pitch transmission data 31c indicating the minimum pitch transmitted by the mechanism drive unit 32. The pitch calculation unit 35 multiplies the number of times the carrier tape 14 is sent from the detection of the first pocket to the detection of the second pocket by the pitch of 2 mm used for the carrier tape 14 to carry the carrier. Of the plurality of component storage pockets 15b formed on the tape 14, the pitch between two adjacent pockets until the first pocket and the second pocket are sent out (in other words, the pitch between the component storage pockets 15b) is calculated. To do. The control unit 30 identifies and stores the pitch between the pockets calculated by the pitch calculation unit 35 as a predetermined pitch of the carrier tape 14 (St10).

The control unit 30 sends out the carrier tape 14 based on the predetermined pitch identified and stored in step St10, and executes the removal of the component P (St11).

As described above, in the component mounting device 1 according to the first embodiment, at least an adjacent first pocket among a plurality of component storage pockets 15b capable of sending out the carrier tape 14 and accommodating the components formed on the carrier tape 14. A pocket detection unit 34b that detects the first pocket and the second pocket, and a pitch calculation unit 35 that counts the number of times the carrier tape 14 is transmitted while detecting the first pocket and the second pocket are provided. The pitch between the plurality of component storage pockets 15b formed in the carrier tape 14 is calculated based on the number of times the carrier tape 14 is sent out while detecting the second pocket.

As a result, the component mounting device 1 can calculate the pitch between the adjacent component storage pockets 15b even when the carrier tape 14 is switched regardless of the presence or absence of splicing. Further, when the component mounting device 1 starts or once ends and restarts the mounting process, even if carrier tapes 14 having different pitches between the adjacent component storage pockets 15b are used, the adjacent component storage pockets 15b can be reliably stored. The pitch between the pockets 15b can be calculated. Therefore, the pitches of the plurality of component storage pockets 15b formed on the carrier tape 14 can be accurately detected, and it is possible to reduce the number of missing components during the mounting process and shorten the mounting time of the components.

Further, the component mounting device 1 has a component storage pocket 15ba (an example of the first pocket) sent to the component removal position 5a by the board recognition camera 10 and a component storage pocket 15bb (first) sent to the component removal position 5a next. An example of two pockets) can be imaged, and the component storage pocket 15b can be reliably detected based on these captured images. As a result, the pitch between the adjacent component storage pockets 15b can be calculated even when the carrier tape 14 is switched regardless of the presence or absence of splicing. Further, when the component mounting device 1 starts or once ends and restarts the mounting process, even if carrier tapes 14 having different pitches between the adjacent component storage pockets 15b are used, the adjacent component storage pockets 15b can be reliably stored. The pitch between the pockets 15b can be calculated. Therefore, the pitches of the plurality of component storage pockets 15b formed on the carrier tape 14 can be accurately detected, and it is possible to reduce the number of missing components during the mounting process and shorten the mounting time of the components.

Further, the component mounting device 1 calculates the pitch between the plurality of component storage pockets 15b at the timing when the component mounting process is started. Therefore, even when the carrier tape 14 is switched regardless of the presence or absence of splicing, the pitch between the adjacent component storage pockets 15b can be calculated. Further, when the component mounting device 1 starts or once ends and restarts the mounting process, even if carrier tapes 14 having different pitches between the adjacent component storage pockets 15b are used, the adjacent component storage pockets 15b can be reliably stored. The pitch between the pockets 15b can be calculated. Therefore, the pitches of the plurality of component storage pockets 15b formed on the carrier tape 14 can be accurately detected, and it is possible to reduce the number of missing components during the mounting process and shorten the mounting time of the components.

Further, the component mounting device 1 is used when the carrier tape 14 is switched, and is imaged by the splicing recognition camera 22 and the splicing recognition camera 22 which can image the splicing tape 17 which joins the carrier tape 14a and the carrier tape 14b. It is provided with a splicing detection unit 34a capable of detecting the splicing tape 17 included in the captured image. Therefore, when the component mounting device 1 splics the carrier tape 14 using the splicing tape 17 (an example of a splice member), the switching of the carrier tape 14 can be reliably detected. As a result, the pitch between the adjacent component storage pockets 15b can be calculated even when the carrier tape 14 is switched regardless of the presence or absence of splicing, and the plurality of component storage pockets 15b formed on the carrier tape 14 can be calculated. It is possible to accurately detect the pitch, reduce the number of missing parts during the mounting process, and shorten the mounting time of the parts.

Further, the component mounting device 1 is formed on the carrier tape 14 by sending the carrier tape 14 for each predetermined length and multiplying the number of times the carrier tape 14 is sent and the predetermined pitch at which the carrier tape 14 is sent. The pitch between the plurality of component storage pockets 15b is calculated. As a result, the pitch between the adjacent component storage pockets 15b can be calculated even when the carrier tape 14 is switched regardless of the presence or absence of splicing. Further, when the component mounting device 1 starts or once ends and restarts the mounting process, even if carrier tapes 14 having different pitches between the adjacent component storage pockets 15b are used, the adjacent component storage pockets 15b can be reliably stored. The pitch between the pockets 15b can be calculated. Therefore, the pitches of the plurality of component storage pockets 15b formed on the carrier tape 14 can be accurately detected, and it is possible to reduce the number of missing components during the mounting process and shorten the mounting time of the components.

Although various embodiments have been described above with reference to the accompanying drawings, the present disclosure is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications, modifications, substitutions, additions, deletions, and equality examples within the scope of the claims. It is understood that it belongs to the technical scope of the present disclosure. In addition, each component in the various embodiments described above may be arbitrarily combined as long as the gist of the invention is not deviated.

The present disclosure is useful as a component mounting device and a component mounting method that accurately detects the pitch between pockets formed on the carrier tape and achieves both reduction of missing parts and shortening of component mounting time when feeding the tape. Is.

3 Board 5 Tape feeder 5a Parts take-out position 10 Board recognition camera 14 Carrier tape 15 Base tape 15a Feed hole 15b Parts storage pocket 16 Cover tape 22 Splicing recognition camera 30 Control unit 31 Storage unit 32 Mechanism drive unit 34 Imaging processing unit 34a Splicing detection Part 34b Pocket detection part 35 Pitch calculation part C1 Pocket position P1 Parts

Claims (6)

A tape delivery unit that sends out carrier tape,
A pocket detection unit that detects at least adjacent first pockets and second pockets among a plurality of pockets capable of storing parts in the carrier tape.
A tape transmission number detection unit that detects the number of times the tape transmission unit transmits the carrier tape as the transmission number is provided.
The tape transmission count detection unit is based on the number of transmissions until the first pocket and the second pocket are detected, and the adjacent pockets among the plurality of pockets formed on the carrier tape are connected to each other. Calculate the pitch,
Component mounting device. An imaging unit capable of imaging each of the plurality of pockets is further provided.
The pocket detection unit detects the first pocket and the second pocket, respectively, based on the captured image captured by the imaging unit.
The component mounting device according to claim 1. The tape transmission count detection unit calculates the pitch in response to the input of a signal indicating the start timing of the mounting process by the component mounting device.
The component mounting device according to claim 1 or 2. Further provided with a recognition unit that recognizes a splice member splicing the end of the carrier tape and the start of another carrier tape.
The tape transmission count detection unit calculates the pitch in response to the input of a signal indicating that the splice member has been recognized.
The component mounting device according to claim 1 or 2. The tape delivery unit sends out the carrier tape at predetermined lengths,
The tape transmission count detection unit calculates the pitch by multiplying the transmission count by the predetermined length.
The component mounting device according to claim 1. It is an automatic pitch detection method that detects the pitch between pockets formed on a carrier tape having a plurality of pockets each capable of storing parts.
Send out the carrier tape
The transmitted carrier tape is imaged by an imaging device, and the image is taken.
Based on the captured image captured by the imaging device, at least adjacent first pocket and second pocket among the plurality of pockets are detected.
The number of times the carrier tape was sent between the time when the first pocket was detected and the time when the second pocket was detected was detected as the number of times of sending.
Based on the detected number of times of transmission, the pitch between adjacent pockets among the plurality of pockets is calculated.
Pitch automatic detection method.

Images