JP4710805B2 - Parts holder - Google Patents

Description

  The present invention relates to a component holder that is detachably mounted on a mounting head in an electronic component mounting apparatus and holds an electronic component to be mounted.

  In the electronic component mounting apparatus, a component holding tool such as a suction nozzle for holding the electronic component is detachably mounted on a mounting head that takes out the electronic component from the component supply unit and transports and mounts it on the substrate. These component holders are prepared for each type of electronic component to be mounted, and are replaced with new ones when the portion in contact with the electronic component is worn away and cannot be used.

In recent years, in the electronic parts manufacturing industry, refinement of production management has been progressing with the aim of ensuring manufacturing quality and improving production efficiency, and not only the history of parts used for product assembly but also tools used in the manufacturing process. Is required to be identified individually. For this reason, a component holder that is used by being mounted on a mounting head in an electronic component mounting apparatus has also been proposed to include a storage medium so that individual ID information can be stored individually (see, for example, Patent Document 1).
JP-A-4-311097

  However, in the above-mentioned patent document examples, only a configuration in which a storage medium is provided for each mounting nozzle is proposed, and a specific configuration such as what is specifically used as the storage medium is shown. There was no possibility of practical use. In other words, as a storage medium that can be used for such applications, RF tags that enable non-contact information writing / reading have been put into practical use, but RF tags are incorporated into component holders such as suction nozzles. However, there was no disclosure of a method for ensuring that the system functions properly.

  In view of the above, an object of the present invention is to provide a component holder that can incorporate an RF tag for storing individual information including individual ID information so as to be readable and writable and can function reliably.

The component holder of the present invention is a component holder that is detachably mounted on a mounting head in an electronic component mounting apparatus and holds an electronic component to be mounted, and is engaged with a holder mounting portion provided on the mounting head. A base part having an engaging part, a contact part provided in connection with the base part and abutting and holding the electronic component, and information including ID information of the component holder is stored in a non-contact manner. An RF tag capable of reading and writing, wherein the base and the abutting portion are made of metal, and the RF tag is made of a viscous paint-like electromagnetic wave absorbing material containing a soft magnetic metal in a resin. It is attached to the base through a film formed by applying a predetermined film thickness on the upper surface of the part .

  According to the present invention, by adopting a configuration in which an RF tag capable of reading and writing information in a non-contact manner is attached to the base of a component holder through a mounting portion made of a non-conductive material, An RF tag for storing individual information including individual ID information in a freely readable and writable manner without being generated in the attachment portion can be incorporated and functioned reliably.

Next, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a front view of a mounting head in the electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a diagram illustrating the structure of a nozzle station in the electronic component mounting apparatus according to the embodiment of the present invention, and FIG. 5 is a diagram illustrating the embodiment of the present invention. FIG. 6 is a plan view of the nozzle station in the electronic component mounting apparatus according to the embodiment of the present invention, and FIGS. 7 and 9 are electronic components according to the embodiment of the present invention. FIG. 8 is an explanatory view of the structure of an RF tag sheet used for an electronic component suction nozzle in an electronic component mounting apparatus according to an embodiment of the present invention, and FIG. FIG. 11 is a functional explanatory diagram of an RF tag reader / writer used in the electronic component mounting apparatus according to the embodiment; FIG. 11 is a block diagram showing the configuration of the control system of the electronic component mounting apparatus according to the embodiment of the present invention; 12 is a flowchart showing a method of reading / writing information of an RF tag in the electronic component mounting apparatus according to the embodiment of the present invention. FIG. 13 is a flowchart showing information of the RF tag in the electronic component mounting apparatus according to the embodiment of the present invention. It is operation | movement explanatory drawing of the reading / writing method.

  First, the structure of the electronic component mounting apparatus will be described with reference to FIGS. In FIG. 1, a transport path 2 is disposed in the center of the base 1 in the X direction (substrate transport direction). The conveyance path 2 conveys the substrate 3 carried in from the upstream side and positions it on the mounting stage. Component supply units 4 are arranged on both sides of the conveyance path 2, and a plurality of tape feeders 5 are arranged in parallel in each component supply unit 4. The tape feeder 5 supplies the electronic components by pitch-feeding the carrier tape holding the electronic components.

  Y-axis tables 6A and 6B are disposed on both ends of the upper surface of the base 1, and two X-axis tables 7A and 7B are installed on the Y-axis tables 6A and 6B. By driving the Y-axis table 6A, the X-axis table 7A moves horizontally in the Y direction, and by driving the Y-axis table 6B, the X-axis table 7B moves horizontally in the Y direction. The X-axis tables 7A and 7B are equipped with a mounting head 8 and a reader / writer 9 that moves integrally with the mounting head 8, respectively. As will be described later, the reader / writer 9 has a function of reading / writing data without contact with the RF tag.

  By driving the Y-axis table 6A, the X-axis table 7A, the Y-axis table 6B, and the X-axis table 7B in combination, the mounting head 8 moves horizontally, and electronic components are transferred from the respective component supply units 4 to the nozzles 14 (FIG. And is mounted on the substrate 3 positioned in the conveyance path 2. The Y-axis tables 6A and 6B and the X-axis tables 7A and 7B serve as head moving means for moving the mounting head 8. The substrate recognition camera 9 that has moved onto the substrate 3 captures and recognizes the substrate 3. A component recognition camera 11 and a nozzle station 12 are disposed on the route from the component supply unit 4 to the conveyance path 2.

  When the mounting head 8 that has taken out the electronic component from the component supply unit 4 moves to the substrate 3 positioned on the mounting stage, the electronic component held by the nozzle 14 is moved in the X direction above the component recognition camera 11. Accordingly, the component recognition camera 11 images the electronic component held by the nozzle 14. The imaging result is recognized by a recognition processing unit (not shown), whereby the position of the electronic component held by the nozzle 14 is recognized and the type of the electronic component is identified.

The nozzle station 12 (holding tool storage) stores a plurality of electronic component suction nozzles 14 that are component holders in a predetermined plane arrangement such as a grid arrangement. When the mounting head 8 accesses the nozzle station 12 to perform the nozzle replacement operation, the nozzle replacement is performed in the mounting head 8 according to the type of the target electronic component. This nozzle replacement is performed based on nozzle arrangement data indicating the arrangement state of nozzles in the nozzle station 12. In this embodiment, this nozzle array data is automatically created by reading and identifying the ID information of the RF tag attached to the nozzle 14 at each storage position of the nozzle station 12 by the reader / writer 9. I have to. This nozzle identification operation is performed by moving the reader / writer 9 together with the mounting head 8 in the horizontal direction to access the nozzle station 12.

  As will be described later, the reader / writer 9 is provided with antenna lifting / lowering means (see FIG. 10) for lifting / lowering an antenna for performing transmission / reception with an object via radio waves. The Y axis tables 6A and 6B and the X axis tables 7A and 7B moved in the horizontal direction constitute reader / writer moving means for moving the reader / writer 9 relative to the nozzle station 12 in the horizontal and vertical directions. In other words, here, the head moving means for moving the mounting head 8 also serves as the horizontal movement mechanism of the reader / writer moving means.

  Next, the mounting head 8 will be described with reference to FIG. As shown in FIG. 2, the mounting head is a multi-type, and has a configuration including a plurality of unit mounting heads 8a. These unit mounting heads 8a can be moved up and down individually, and nozzles 14 that adsorb and hold electronic components are detachably mounted on the lower ends of the unit mounting heads 8a. The mounting head 8 includes a common θ-axis motor 13 and can rotate around the nozzle axis. The nozzle 14 is detachably mounted on a nozzle mounting portion 10 provided at the lower portion of the unit mounting head 8a, and is exchanged according to the type of electronic component. That is, this electronic component mounting apparatus takes out an electronic component from a component supply unit by a component holder detachably mounted on the mounting head, and transfers and mounts the electronic component on a substrate.

  The attachment / detachment mechanism of the nozzle 14 will be described with reference to FIG. As shown in FIG. 3A, the lower end portion of the nozzle mounting portion 10 is provided with a fitting convex portion 10a protruding downward, and further, a clamp member 10b and a clamp member 10b for locking the nozzle 14. There is provided a spring 10c that presses against the outside. The nozzle 14 is in contact with an electronic component to be sucked and held, a disk-shaped flange portion 14b protruding horizontally on the upper portion of the nozzle shaft 14a, and an upper portion of the flange portion 14b and coupled to the nozzle shaft 14a. The base portion 14c is provided.

  A disc-shaped RF tag sheet 15 is mounted on the upper surface of the flange portion 14b. As will be described later, the RF tag sheet 15 has a function of storing ID information, usage history information, and the like of each nozzle 14 in a non-contact and writable manner via radio waves. The base portion 14c is provided with a fitting hole 14d into which the fitting convex portion 10a is fitted, and a clamp groove 14e having a shape into which the clamp member 10b is fitted is provided on the outer periphery of the base portion 14c.

  When mounting the nozzle 14 on the nozzle mounting portion 10, the nozzle 14 and the mounting portion 10 are brought close to each other and the fitting convex portion 10a is fitted into the fitting hole 14d. As a result, as shown in FIG. 3B, the clamp member 10b is fitted and engaged with the clamp groove 14e, and the clamp member 10b is tightened by the elastic force of the spring 10c from the outside, whereby the nozzle 14 is attached to the mounting portion 10. It is mounted in a clamped state. The nozzle 14 can be detached from the nozzle mounting portion 10 by forcibly pulling the nozzle 14 away against the elastic force of the spring 10c.

  In the above configuration, the clamp groove 14e is an engagement portion that is provided in the base portion 14c and engages with the nozzle mounting portion 10. Further, the nozzle shaft 14a is connected to the base portion 14c and serves as a contact portion that contacts and holds the electronic component, and the collar portion 14b serves as an attachment portion for attaching the RF tag sheet 15 to the base portion 14c. Yes.

Next, the structure of the nozzle station 12 will be described with reference to FIG. In FIG. 4, the nozzle station 12 (holding tool storage) includes a nozzle storage block 17 supported on the base 1 by a support bracket 17a. The nozzle storage block 17 includes a nozzle 14
Are provided in a grid arrangement corresponding to the mounting arrangement of the nozzles 14 in the mounting head 8.

  On the upper surface of the nozzle storage block 17, a locking plate 16 having a shape covering substantially the entire range of the nozzle storage block 17 is slidably disposed with a predetermined gap between the upper surface. At the corner position of the locking plate 16, an RF tag 19 for identifying the nozzle station (RF tag for the storage unit) is attached. By causing the reader / writer 9 to access the RF tag 19 to perform a reading operation, identification information written in advance for each nozzle station 12, that is, nozzle arrangement data such as a nozzle storage pitch in the nozzle station 12. A search path set in advance for detecting the RF tag sheets 15 of the plurality of nozzles 14 accommodated in the nozzle station 12 by the reader / writer 9 together with information such as the type of the nozzles 14 accommodated. The route information shown can be read.

  One end of the locking plate 16 is coupled to a slide mechanism 18 disposed on the lower surface of the nozzle storage block 17. By driving the slide mechanism 18, the locking plate 16 reciprocates on the upper surface of the nozzle storage block 17. To do. The predetermined gap between the locking plate 16 and the upper surface of the nozzle storage block 17 is set to be larger than the thickness dimension d of the flange 14b shown in FIG. 3, and the nozzle 14 is stored in the nozzle storage block 17. In this state, the locking plate 16 can be slid.

  In the locking plate 16, nozzle insertion openings 16 a are provided in the X direction at positions corresponding to the rows of the matrix arrangement of the storage holes 17 b in the nozzle storage block 17. The nozzle insertion openings 16a are provided with locking claws 16b that partially extend inward from both sides corresponding to the respective rows of the matrix arrangement of the storage holes 17b. Here, the shape dimension of the nozzle insertion opening 16a is such that the opening width dimension is larger than the diameter dimension D of the flange portion 14b of the nozzle 14 shown in FIG. 3, and the internal dimension of the portion where the locking claw portion 16b extends inward. B2 is set to be smaller than the diameter dimension D. Accordingly, in a range where the locking claw portion 16b is not provided protruding, the nozzle 14 can be inserted through the nozzle insertion opening 16a in the vertical direction, and in the portion where the locking claw portion 16b protrudes, the nozzle 14 is inserted through the nozzle. The opening 16a cannot be inserted vertically.

  Next, the function of the locking plate 16 in the nozzle station 12 will be described with reference to FIG. The nozzle 14 is housed and held in the nozzle housing block 17 with the lower surface of the flange 14b abutting against the upper surface of the nozzle housing block 17 and the nozzle shaft 14a being inserted into the housing hole 17b. FIG. 5 shows a state in which the nozzles 14 are arranged in the storage holes 17b in the range of 3/4 of the storage holes 17b provided in the nozzle storage block 17 in the nozzle station 12.

  At this time, the latching claw portion 16b of the latching plate 16 is in an intermediate position between the storage holes 17b, and the latching claw portion 16b does not obstruct the insertion of the nozzle 14. That is, in this state, it is possible to take out the nozzle 14 already stored and held from the nozzle station 12, and it is also possible to newly hold the nozzle 14 in the empty storage hole 17b in which the nozzle is not stored.

FIG. 5B shows a state in which the locking mechanism 16 is slid by driving the slide mechanism 18. That is, by driving the slide mechanism 18, the locking plate 16 moves from the state shown in FIG. 5A by px / 2 (where px is the arrangement pitch of the storage holes 17b in the X direction). The pawl portion 16b coincides with the row position of the storage holes 17b. Accordingly, the locking claw portion 16b is located immediately above the flange portion 14b in contact with the upper surface of the nozzle storage block 17, and in this state, the upward movement of the nozzle 14 is restricted. That is, the nozzle 14 is locked by the locking plate 16 at the nozzle station 12.

  In the nozzle station 12 shown in FIGS. 4 and 5, a case where all the stored nozzles 14 are the same type is shown, but it is not always necessary that all are the same type. For example, as shown in FIG. 6, a nozzle 14 </ b> A intended for a large-sized component may be mixed with a normal size nozzle 14 and stored in the nozzle station 12.

  Next, the structure of the RF tag sheet 15 attached to the nozzle 14 and the method of attaching the RF tag sheet 15 to the nozzle 14 will be described with reference to FIGS. First, a configuration example when a non-conductive material such as an insulating ceramic is used as the material of the nozzle 14 will be described. This configuration is suitable for a nozzle of a type that uses a large amount of the same shape by die molding, such as a nozzle for a general-purpose component whose shape is standardized.

  As shown in FIG. 7A, the RF tag sheet 15 is an annular sheet component having an opening 15b into which a cylindrical base portion 14c provided so as to protrude upward from the flange portion 14b of the nozzle 14 is fitted. . FIG. 7B shows a state in which the RF tag sheet 15 is attached to the upper surface of the flange portion 14b using an adhesive or the like. Here, since the flange portion 14b is made of a non-conductive material, when reading / writing the RF tag sheet 15 as an object, eddy current due to electromagnetic waves does not occur in the flange portion 14b, and signal exchange by the antenna 15d is vortexed. It is not disturbed by the current.

  FIG. 8 shows the internal structure of the RF tag sheet 15, in which an IC tag 15 c and a loop antenna 15 d are built in an annular resin sheet 15 a. As a method of manufacturing the RF tag sheet 15, a method of forming the resin sheet 15a by setting the IC tag 15c and the antenna 15d on an annular resin plate serving as a substrate and sealing the upper surface thereof with resin, Various methods such as a method of sandwiching the IC tag 15c and the antenna 15d between two annular resin plates can be used.

  That is, the nozzle 14 shown in FIG. 7 includes a base portion 14c having an engaging portion that engages with a nozzle mounting portion 10 (holding device mounting portion) provided in the mounting head 8, and a base portion 14c that is provided in an electronic component. The configuration includes a nozzle shaft 14a (abutting portion) that abuts and holds, and an RF tag sheet 15 that stores information including ID information of the nozzle 14 and can read / write these information in a non-contact manner. Further, the RF tag sheet 15 is attached to the base portion 14c via a flange portion 14b (attachment portion) made of a non-conductor.

  In the example shown in FIG. 7, an example in which the nozzle 14 is made of a non-conductive material is shown. However, a nozzle used for a large deformed part such as a connector is small and is not suitable for mass production. Such nozzles are machined and manufactured individually for each product, and materials such as aluminum and stainless steel are used. In this case, since there is a possibility that radio wave transmission / reception by the RF tag sheet 15 may be hindered by eddy currents generated by electromagnetic waves on the metal surface, a configuration as shown in FIG. 9 is used.

  First, as shown in FIG. 9A, the electromagnetic wave absorbing sheet 20 (electromagnetic wave absorbing member) is mounted on the upper surface of the flange portion 14b. The electromagnetic wave absorbing sheet 20 is formed by solidifying an electromagnetic wave absorbing material in which a soft magnetic metal powder such as ferrite is contained in a resin binder such as urethane resin into a disk shape. Instead of using the electromagnetic wave absorbing sheet 20, an electromagnetic wave absorbing material film may be formed by applying a viscous paint-like electromagnetic wave absorbing material to the upper surface of the collar portion 14b with a predetermined film thickness.

  By adopting the configuration in which the electromagnetic wave absorbing material is sandwiched between the RF tag sheet 15 and the flange portion 14b in this way, the RF tag sheet 15 does not directly contact the surface of the conductive flange portion 14b. It is possible to greatly reduce the influence of the eddy current induced on the surface on the RF tag sheet 15 and eliminate the adverse effect on the read / write processing for the RF tag sheet 15.

  That is, in the example shown in FIG. 9, the nozzle 14 is provided in combination with a base portion 14 c having an engaging portion that engages with a nozzle mounting portion 10 (holding device mounting portion) provided in the mounting head 8, and the base portion 14 c. A nozzle shaft 14a (contact portion) that contacts and holds the electronic component, an RF tag that stores information including ID information of the nozzle 14 and can read / write these information in a non-contact manner, and the RF It becomes the form provided with the collar part 14b (attachment part) which attaches a tag to the base part 14c, and also the RF tag becomes a form attached to the collar part 14b via the electromagnetic wave absorption sheet 20 (electromagnetic wave absorption member). Yes.

  Next, the reader / writer 9 attached to the mounting head 8 will be described. As shown in FIG. 10A, an annular antenna 21 is configured to be movable up and down by an antenna lifting mechanism 22, and the antenna 21 is connected to a transmission / reception unit 23. By operating the transmitter / receiver 23 to radiate radio waves from the antenna 21, a current is induced in the antenna 15d of the RF tag sheet 15 located within the processing target range R shown in FIG. As a result, the IC tag 15c built in the RF tag sheet 15 operates. That is, the RF tag sheet 15 transmits a radio wave carrying a unique identification signal from an antenna 15d provided in the RF tag sheet 15. Then, when the transmission / reception unit 23 receives this radio wave via the antenna 21, the RF tag sheet 15 is detected in a non-contact state.

  As shown in FIG. 10B, the processing target range R has a substantially spindle shape having a three-dimensional expansion with a narrowed shape. That is, as the height difference h downward from the antenna 21 increases, the radius r of the detection target range indicating the planar expansion of the processing target range R decreases, and the height difference h increases to h1, h2, and h3. Accordingly, the radius r of the detection target range is gradually reduced to r1, r2, and r3, and the processing target range R disappears at the maximum detection height hm. In other words, the processing target range R has a planar expansion in which the radius differs for each height difference h. The reader / writer 9 has a function of detecting the RF tag sheet 15 attached to each nozzle 14 located in the processing target range R and reading / writing information for the detected RF tag. is doing.

  That is, when the RF tag sheet 15 to be read / written is positioned within the processing target range R and the transmitter / receiver 23 is operated to transmit a radio wave carrying a read / write process command signal from the antenna 21, the radio wave is Received by the antenna 15d. The IC tag 15c operates according to the command signal using the received radio wave as a power source. As a result, data is written to the memory built in the IC tag 15c, and the ID information unique to the IC tag and the individual information read from the memory are transmitted to the transmission / reception unit 23 via the antenna 15d.

  Next, the configuration of the control system will be described with reference to FIG. In FIG. 11, a control unit 30 is an overall control device, and controls operations and arithmetic processing by each unit described below. The reading / writing processing unit 31 performs processing necessary for reading and writing data to the RF tag sheet 15 by the reader / writer 9. With respect to the RF tag detected when the transmission / reception unit 23 receives the reflected wave, the read / write processing unit 31 reads the identification signal included in the reflected wave, whereby the individual RF tag is identified.

The operation counting unit 32 performs a process of obtaining the operation count value by counting the number of component mounting operations performed using the nozzles 14 mounted on the mounting head 8 for each individual nozzle 14. The obtained operation count value is stored in the storage unit 37 to be described later, and when the use of the nozzle 14 is interrupted and returned to the nozzle station 12, the read / write processing unit 31 performs the nozzle 14. The cumulative operation count value indicating the usage history of the nozzle 14 is updated.

  The mechanism drive unit 33 is controlled by the control unit 30, and a substrate transport mechanism 34 for transporting the substrate 3 through the transport path 2, and a component for taking out an electronic component from the component supply unit 4 by the mounting head 8 and mounting it on the substrate 3. The nozzle station 12 that houses a plurality of mounting mechanisms 35 and nozzles 14 is driven. In the above configuration, the control unit 30 controls the reader / writer moving unit described above as a reading / writing control unit that executes a relative movement operation for reading / writing information on the plurality of nozzles 14. Function.

  The storage unit 37 stores various programs and data necessary for executing the component mounting operation. These data include nozzle arrangement data 37a indicating the arrangement state of the nozzles 14 in the nozzle station 12, the aforementioned operation count value 37b obtained by the operation count unit 32, and a maintenance value 37c for clearly indicating the maintenance time of the nozzle. Is included. The maintenance value 37c indicates the proper execution timing of maintenance work such as cleaning and replacement for the nozzles that are consumable parts in the form of the cumulative number of uses, and is set and stored in advance for each individual nozzle 14.

  At the start of the operation of the electronic component mounting apparatus, the operation count value of the nozzle 14 is read by the reader / writer 9 from the RF tag sheet 15 of each nozzle 14 accommodated in the nozzle station 12 and stored in the storage unit 37 as the updated initial value. . During continuous operation of the electronic component mounting apparatus, the operation count value 37a of the storage unit 37 is sequentially updated by adding the number of times of use for the current continuous operation to the updated initial value. The control unit 30 compares the operation count value 37a sequentially updated in this way with the maintenance value 37b of the nozzle, thereby determining whether or not a maintenance execution time such as cleaning or replacement of the nozzle has come. If it is determined that the maintenance execution time has arrived for each nozzle, the notification unit 38 notifies that fact. Thereby, the machine operator can know an appropriate maintenance execution time for each nozzle.

  Next, in order to individually identify the nozzles 14 in the nozzle station 12, a method for reading / writing information on the RF tag, in which information on the RF tag attached to each nozzle 14 is read / written by the reader / writer 9 is described. This will be described with reference to FIGS. Here, the case where the planar position of the nozzle 14 in the nozzle station 12, that is, the planar arrangement of the storage holes 17b shown in FIG. 4 is stored in the RF tag 19 as arrangement information in advance is targeted. The nozzles 14 need not be stored in all the storage holes 17b, and the individual nozzles 14 are identified together with the presence or absence of the nozzles 14 in the storage holes 17b. Based on the identification result, the nozzle array data 37a is automatically updated.

  First, the mounting head 8 is moved horizontally to cause the reader / writer 9 to access the nozzle station 12, and the arrangement information previously written in the RF tag 19 for nozzle station identification is read by the reader / writer 9. As a result, the arrangement of the storage holes 17b in the nozzle station 12 and the type of the stored nozzles are found. Next, as shown in FIG. 13A, the antenna 21 is raised by the antenna lifting mechanism 22 until the nozzle station 12 is outside the detection range (processing target range) of the antenna 21 (ST1). That is, the reader / writer 9 is moved relative to the nozzle station 12 by the reader / writer moving means described above, and the plurality of nozzles 14 accommodated in the nozzle station 12 are positioned below the processing target range R. (Evacuation process).

  Next, the antenna 21 is moved onto the nozzle 14 to be read / written on the nozzle station 12 (ST2). That is, as shown in FIG. 13B, the plane center line CL of the processing target range R is flat at the position where the nozzle 14 * to be read or written out of the plurality of nozzles 14 should be located in the nozzle station 12. Is aligned (planar alignment step). Here, the position where the nozzle 14 * should be can be known from the component arrangement data read by the reader / writer 9.

  Thereafter, the antenna 21 is lowered while radiating the read radio wave (ST3) (search process). As a result, as shown in FIG. 13C, the antenna 21 gradually approaches the nozzle 14 * to be checked from directly above. In the search process for lowering the antenna 21, it is always monitored whether or not a reflected wave is detected (ST4). Here, the reflected wave is a radio wave that is transmitted when the RF tag makes a predetermined response when the radio wave transmitted from the antenna 21 is received by the antenna of the RF tag. If a reflected wave is detected, the lowering of the antenna 21 is stopped, and processing for specifying the processing target nozzle 14 is performed (ST5).

  That is, as shown in FIG. 13 (d), in the process of lowering the antenna 21, the processing target range R has a narrowed shape, so that the nozzle 14 * located at the plane center line CL is the first. It is located within the region of the processing target range R. Of the plurality of nozzles 14 housed in the nozzle station 12, the RF tag sheet 15 attached to the nozzle 14 * first responds to the radio wave from the antenna 21 and transmits a reflected wave to the antenna 21. , Detected by the transceiver 23. Then, the detected nozzle 14 * is specified as the nozzle 14 to be processed.

  Next, the ID information transmitted from the RF tag sheet 15 of the identified nozzle 14 is read and identified by the read / write processing unit 31 (ST6). That is, in the above-described (ST4) to (ST6), in the process of executing the above-described search process, the nozzle 14 * first detected and located in the processing target range R is specified as the nozzle 14 to be processed. . Thus, the nozzle identification operation for one storage hole 17b is completed.

  When the first identification target nozzle 14 is specified, the antenna 21 is moved horizontally according to the nozzle arrangement data in a state where the height position of the antenna 21 is fixed. The nozzles 14 accommodated in the holes 17b are sequentially positioned within the processing target range R, whereby the plurality of nozzles 14 accommodated in the nozzle station 12 are sequentially identified. Of course, the operations after (ST1) may be repeatedly executed for the other nozzles.

  In the above-described search process, when the reflected wave from the RF tag is not detected even after the antenna 21 descends from the upper surface of the nozzle station 12 to the position of the maximum height difference hm shown in FIG. It is determined that there is no target nozzle 14 at the position (accommodating hole 17 b), the search process is stopped, and the nozzle identification operation for other nozzles 14 is started.

  In the above description, only the process of detecting and identifying the nozzle 14 as a processing target and reading and identifying the identification information from the RF tag sheet 15 of the identified nozzle 14 is described. Information unique to each nozzle 14 may be read, such as an operation count value indicating the usage history (cumulative usage count). Further, not only reading information but also writing unique information to the RF tag sheet 15 of each nozzle 14, the search process for detecting the nozzle 14, specifying it as a processing target, and identifying it is executed. .

  As described above, the RF tag information reading / writing method described in this embodiment is based on the RF attached to the component holder by the reader / writer having a three-dimensional processing target range with a constricted shape. When reading and writing information for tags, place the component holder below the processing area, and then place the center of the plane of the processing area where the component holder to be read and written should be. After the alignment in a plane, a search process is performed in which the reader / writer is operated and gradually lowered relative to the holder storage unit. In this search process, the first position is within the processing target range. The detected component holder is specified as a component holder to be read / written.

  By adopting such a method, individual nozzles are targeted for a plurality of nozzles 14 stored close to the nozzle station 12 using a reader / writer having a characteristic of a processing target range that expands three-dimensionally. 14 can be correctly identified. As a result, information can be written and read accurately for the nozzle 14 to which the RF tag is attached.

  In the above embodiment, an example of the nozzle 14 that holds an electronic component by vacuum suction is shown as a component holder, but the present invention is not limited to the nozzle by vacuum suction. That is, as long as it has a function of holding the electronic component detachably mounted on the mounting head, even a component holder that holds the electronic component by a mechanical chuck mechanism is applicable to the present invention. Become.

  Moreover, in the said embodiment, although the RF tag sheet | seat 15 which incorporated the IC tag as an RF tag in the annular | circular shaped resin sheet is shown in the example shown in FIG. The configuration of the RF tag is not limited to the above example. That is, any structure having a function of storing information in a non-contact manner via radio waves can be used in the present invention, and such an RF tag can be attached to the base of the nozzle. -If it is a shape, it can be used as an attachment part in this invention.

  The component holder of the present invention has an effect that an RF tag for storing individual information including individual ID information in a readable and writable manner can be incorporated and functioned reliably. Useful in the field of implementation.

The top view of the electronic component mounting apparatus of one embodiment of this invention The front view of the mounting head in the electronic component mounting apparatus of one embodiment of this invention Explanatory drawing of attachment / detachment operation | movement of the suction nozzle in the electronic component mounting apparatus of one embodiment of this invention Structure explanatory drawing of the nozzle station in the electronic component mounting apparatus of one embodiment of this invention Explanatory drawing of operation | movement of the nozzle station in the electronic component mounting apparatus of one embodiment of this invention The top view of the nozzle station in the electronic component mounting apparatus of one embodiment of this invention The perspective view of the nozzle for electronic component adsorption | suction in the electronic component mounting apparatus of one embodiment of this invention Structure explanatory drawing of RF tag sheet | seat used for the nozzle for electronic component adsorption | suction in the electronic component mounting apparatus of one implementation of this invention The perspective view of the nozzle for electronic component adsorption | suction in the electronic component mounting apparatus of one embodiment of this invention Functional explanatory diagram of an RF tag reader / writer used in the electronic component mounting apparatus of one embodiment of the present invention The block diagram which shows the structure of the control system of the electronic component mounting apparatus of one embodiment of this invention The flowchart which shows the reading / writing method of the information of RF tag in the electronic component mounting apparatus of one embodiment of this invention Operation explanatory diagram of RF tag information reading / writing method in electronic component mounting apparatus of one embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Board | substrate 4 Component supply part 8 Mounting head 9 Reader / writer 12 Nozzle station 14 Nozzle 14b ridge part 14c Base 15 RF tag sheet 15c IC tag 15d Antenna 20 Electromagnetic wave absorption sheet 30 Control part (reading / writing control means)

Claims (1)

A component holder that is detachably mounted on a mounting head in an electronic component mounting apparatus and holds an electronic component to be mounted,
A base portion having an engaging portion that engages with a holder mounting portion provided in the mounting head, an abutting portion that is provided coupled to the base portion and that abuts and holds the electronic component, and the component holder An RF tag that stores information including ID information and can read and write the information in a non-contact manner;
The base and the contact portion are made of metal,
The RF tag is attached to the base through a film formed by applying a viscous paint-like electromagnetic wave absorbing material containing a soft magnetic metal in a resin to the upper surface of the attachment made of a conductor with a predetermined film thickness. A component holder characterized by being made.

Images