JP6956179B2 - Nozzle cleaning unit automatic replacement system - Google Patents

Description

This specification discloses a technique relating to a nozzle cleaning unit automatic replacement system that automatically replaces a nozzle cleaning unit that cleans a suction nozzle of a component mounting machine.

If foreign matter such as dust adheres to the suction nozzle of the component mounting machine, a component suction error (part suction error or component suction posture abnormality) may occur, or the foreign matter may appear in the captured image of the component sucked on the suction nozzle. It may cause an image processing error. Therefore, as described in Patent Document 1 (Japanese Unexamined Patent Publication No. 2008-31549), when cleaning the suction nozzle, the operator sets the nozzle cleaning unit in the feeder set portion of the component mounting machine. There is a nozzle cleaning unit that cleans the suction nozzle.

Japanese Unexamined Patent Publication No. 2008-31549

In general, a component mounting line for mounting components on a circuit board to produce a component mounting board is configured by arranging a plurality of component mounting machines along a transport path for transporting the circuit board. In the configuration of 1, the worker who manages the production of the component mounting line must manually set the nozzle cleaning unit in each feeder set portion of the plurality of component mounting machines of the component mounting line. There is a drawback that the amount of work of the worker increases.

Also, if the nozzle cleaning unit is set in the feeder set section of the component mounting machine, the number of feeders that can be set in the feeder set section will decrease accordingly. Therefore, the nozzle cleaning unit is set in the feeder set section immediately before cleaning the suction nozzle. Then, it is desirable to take out the nozzle cleaning unit immediately after cleaning and replace it with a feeder. However, the operator manually attaches and detaches the nozzle cleaning unit before and after cleaning for all the component mounting machines on the component mounting line. It is very troublesome to do with. Moreover, there is a possibility that the component mounting machine for setting the nozzle cleaning unit may be mistaken due to a work error of the operator, or the nozzle cleaning unit may be left unattended without attachment / detachment, and as a result, the component mounting machine stops due to an error. There is also the possibility of doing.

In addition, if the number of feeders required for production is not so large, production can be continued even if the nozzle cleaning unit is constantly set in the feeder set part of each component mounting machine on the component mounting line. Has the disadvantage that it is necessary to prepare nozzle cleaning units for the number of all component mounting machines on the component mounting line, and the cost of preparing nozzle cleaning units increases.

In order to solve the above problems, the nozzle cleaning unit is an automatic replacement system for automatically replacing the nozzle cleaning unit that cleans the suction nozzle of the component mounting machine, and the nozzle cleaning unit is a feeder in the feeder set portion of the component mounting machine. A stock section that houses a plurality of feeders to be set in the feeder set section and the nozzle cleaning unit, and a feeder to be replaced are taken out from the feeder set section and collected in the stock section. At the same time, it is provided with an automatic switching device that takes out a designated feeder from the stock section and sets it in the feeder setting section, and the automatic switching device removes the nozzle cleaning unit from the stock section when cleaning the suction nozzle. When the nozzle cleaning unit is taken out and set in the feeder set section and the nozzle cleaning unit is set in the feeder set section while the component mounting machine is in operation, if there is no empty slot in the feeder set section, the feeder set section is used. Wait until any one of the plurality of feeders set in is ready to be taken out, and when any one of the feeders is ready to be taken out, take out the feeder and set the nozzle cleaning unit. However, when the component mounting machine is stopped, even if there is no empty slot in the feeder set section, any one of the feeders set in the feeder set section is taken out and the nozzle cleaning unit is set. It is something that I tried to do.

In this configuration, the nozzle cleaning unit can also be automatically replaced by using an automatic replacement device that automatically replaces the feeder set in the feeder set part of the component mounting machine, so the operator can manually replace the nozzle cleaning unit. There is no need to do it in the work, and labor can be saved. Moreover, since one nozzle cleaning unit can be reused for a plurality of component mounting machines, the number of nozzle cleaning units to be prepared can be reduced, and the cost of preparing the nozzle cleaning units can be reduced. Further, when it becomes necessary to clean the suction nozzle of the component mounting machine, the nozzle cleaning unit is promptly set in the feeder set portion of the component mounting machine by the automatic replacement device, and the nozzle cleaning unit is promptly set after the cleaning is completed. It is possible to take it out easily, and it is possible to efficiently clean the suction nozzle, prevent a decrease in productivity, and prevent an error stop of the component mounting machine due to an error in the attachment / detachment work of the nozzle cleaning unit of the operator. Can be done. The stock unit may be provided in the component mounting machine, or may be installed in the component mounting line including the component mounting machine.

FIG. 1 is a perspective view showing the configuration of the entire component mounting line of one embodiment. FIG. 2 is a perspective view schematically showing the configurations of the automatic switching device and the component mounting machine. FIG. 3 is a block diagram schematically showing the configuration of a component mounting line with an automatic replacement device. FIG. 4 is a perspective view showing a cassette type feeder. FIG. 5 is a perspective view showing a cassette type nozzle cleaning unit. FIG. 6 is a side view showing a schematic configuration of a main part of the nozzle cleaning unit when the brush is lowered to the retracted position. FIG. 7 is a side view showing a schematic configuration of a main part of the nozzle cleaning unit when the brush is raised to the cleaning position.

Hereinafter, an embodiment will be described.
First, the configuration of the component mounting line 10 will be described with reference to FIGS. 1 to 6.

The component mounting line 10 is configured by arranging a plurality of component mounting machines 12 along the transport direction (X direction) of the circuit board 11, and solders to the circuit board 11 on the board carry-in side of the component mounting line 10. A solder printing machine (not shown) for printing the paper, a storage 19 for storing the cassette type feeder 14 (see FIG. 4) and the cassette type nozzle cleaning unit 81 (see FIGS. 5 to 7) are installed. There is.

As shown in FIG. 2, each component mounting machine 12 has two conveyors 13 that convey the circuit board 11 and a suction nozzle that sucks the components supplied from the cassette type feeder 14 and mounts them on the circuit board 11. A mounting head 15 that replaceably holds (not shown), a head moving device 16 that moves the mounting head 15 in the XY directions (left-right front-back direction), a liquid crystal display, a display device 23 such as a CRT, and the like are provided. ing.

Each component mounting machine 12 of the component mounting line 10 conveys the circuit board 11 conveyed from the component mounting machine 12 on the upstream side to a predetermined position by the conveyor 13, and uses a clamping mechanism (not shown) to transfer the circuit board 11 to a predetermined position. The parts to be clamped and supplied from the cassette type feeder 14 are sucked by the suction nozzle of the mounting head 15 and moved from the suction position to the imaging position, and the component is moved from the lower surface side of the component imaging camera ( After imaging with (not shown) to determine the amount of suction position deviation of the component, the amount of suction position deviation is corrected and the component is mounted on the circuit board 11 on the conveyor 13 to produce a component mounting board. ..

Next, the configuration of the cassette type feeder 14 will be described with reference to FIG.
The cassette case 32 of the cassette type feeder 14 is formed of a transparent or opaque plastic plate, a metal plate, or the like, and its side surface portion (cover) can be opened and closed. Inside the cassette case 32, a tape loading section 35 is provided for removably (replaceably) loading the tape reel 34 around which the component supply tape 33 is wound. A reel holding shaft 36 that rotatably holds the tape reel 34 is provided at the center of the tape loading portion 35.

Inside the cassette case 32, a tape feeding mechanism 38 that sends the component supply tape 33 pulled out from the tape reel 34 to the component suction position, and a top film 40 (also called a cover tape) from the component supply tape 33 in front of the component suction position. A top film peeling mechanism 39 is provided for peeling to expose the parts in the part supply tape 33.

The tape feed mechanism 38 is composed of a sprocket 42 provided near the lower part of the component suction position, a motor 43 for rotationally driving the sprocket 42, and the like, and is formed on one side edge of the component supply tape 33 at a predetermined pitch. By engaging the teeth of the sprocket 42 with the tape feed hole and rotating the sprocket 42, the component supply tape 33 is pitch-fed to the component suction position.

The top film peeling mechanism 39 holds the component supply tape 33 in front of the component suction position to peel the top film 40 from the upper surface of the component supply tape 33, and the top film peeled by the tape presser 45. It is composed of a top film feed gear mechanism 47 that pulls 40 in the direction opposite to the tape feed direction and feeds it into the top film recovery unit 46 at the top of the cassette case 32, a motor 48 that drives the top film feed gear mechanism 47, and the like. ing.

At the edge of the cassette case 32 on the tape feed direction side, a waste tape 33a (only the carrier tape from which the top film 40 has been peeled off in this embodiment) from which the parts have been taken out after passing through the component suction position is placed below. The waste tape discharge passage 50 for guiding and discharging the waste tape is provided so as to extend downward, and the outlet 50a of the waste tape discharge passage 50 is provided at a position below the center of the end surface of the cassette case 32 on the tape feed direction side. ing.

Inside the cassette case 32, a control device 52 for controlling the motor 43 of the tape feeding mechanism 38 and the motor 48 of the top film peeling mechanism 39 is provided. In addition, although not shown, the cassette case 32 is provided with a connector for communication / power supply and a positioning pin which are connected to the connector for communication / power supply on the component mounting machine 12 side. As a result, by positioning and setting the cassette type feeder 14 on the feeder setting unit 24 of the component mounting machine 12, the connector for communication and power supply of the cassette type feeder 14 is used for communication and power supply on the component mounting machine 12 side. It is designed to be connected to the connector of. A connector for communication / power supply on the component mounting machine 12 side is provided for each slot on the feeder set unit 24.

Further, a feeder identification information recording unit (not shown) that records or stores a feeder ID (identification information of the feeder 14) is provided at a predetermined position of the cassette case 32. As the feeder identification information recording unit, for example, a code label in which the feeder ID is recorded with a bar code, a two-dimensional code, or the like may be used, or an electronic tag (RF tag, IC tag, radio wave tag) that stores the feeder ID data may be used. , Also called a wireless tag). Therefore, when the connector for communication / power supply of the cassette type feeder 14 is connected to the connector for communication / power supply on the component mounting machine 12, the control device 52 of the cassette type feeder 14 and the control device 20 of the component mounting machine 12 The control device 20 of the component mounting machine 12 acquires the feeder ID recorded or stored in the feeder identification information recording unit. Then, the control device 20 of the component mounting machine 12 can recognize which cassette type feeder 14 is set in which slot by communicating with the control device 52 of the cassette type feeder 14.

Next, the configuration of the cassette type nozzle cleaning unit 81 will be described with reference to FIGS. 5 to 7.
The cassette-type nozzle cleaning unit 81 is configured to be replaceably set with the cassette-type feeder 14 in the feeder setting unit 24 of the component mounting machine 12. The height dimension and depth dimension (Y direction dimension) of the nozzle cleaning unit 81 are almost the same as the height dimension and depth dimension of the cassette type feeder 14, and the feeder set portion 24 of the component mounting machine 12 is reached. The mounting structure of the nozzle cleaning unit 81 is the same as the mounting structure of the feeder 14. By doing so, the nozzle cleaning unit 81 can be attached / detached in the same procedure as the feeder 14 can be attached / detached, and the nozzle cleaning unit 81 can be easily attached / detached. The width dimension (X direction dimension) of the nozzle cleaning unit 81 does not necessarily have to be the same as the width dimension of the feeder 14, and may be a width dimension that straddles a plurality of slots of the feeder set portion 24. In short, the width of the nozzle cleaning unit 81 may be such that the nozzle cleaning unit 81 can be set in the feeder setting portion 24 together with the feeder 14.

On the tip surface (the surface on the insertion side to the feeder set portion 24) of the nozzle cleaning unit 81, a connector for communication / power supply 82 that connects to a connector for communication / power supply (not shown) on the component mounting machine 12 side. Is provided, and by connecting the communication / power supply connector 82 of the nozzle cleaning unit 81 to the communication / power supply connector on the component mounting machine 12, power is supplied to the nozzle cleaning unit 81 from the component mounting machine 12 side. At the same time, the identification information (ID) of the nozzle cleaning unit 81, the control signal, and the like are transmitted and received between the control unit 83 of the nozzle cleaning unit 81 and the control device 20 of the component mounting machine 12. The control device 20 of the component mounting machine 12 can recognize which nozzle cleaning unit 81 is set in which slot by communicating with the control unit 83 of the nozzle cleaning unit 81.

Positioning pins 84 and 85 are provided on the upper and lower sides of the connector 82 for communication and power supply on the tip surface of the nozzle cleaning unit 81, respectively, and the positioning pins 84 and 85 are positioning holes of the feeder set portion 24 (FIG. The nozzle cleaning unit 81 is positioned on the feeder set portion 24 by fitting it into (not shown).

Further, a unit identification information recording unit (not shown) that records or stores a unit ID (identification information of the nozzle cleaning unit 81) is provided at a predetermined position of the nozzle cleaning unit 81. As the unit identification information recording unit, for example, a code label in which the unit ID is recorded with a bar code, a two-dimensional code, or the like may be used, or an electronic tag (RF tag, IC tag, radio wave tag) that stores the unit ID data may be used. , Also called a wireless tag).

The nozzle cleaning unit 81 is provided with a brush 86 for cleaning the suction nozzle of the component mounting machine 12 and an elevating device 87 for moving the brush 86 up and down, and the brush 86 is mounted on the elevating table 88 of the elevating device 87. Has been done. As the hair constituting the brush 86, either one artificially formed of resin or the like or one formed of animal hair existing in the natural world may be used. The brush 86 may be formed entirely of bristles having a single hardness, or may be formed using bristles having different hardnesses on the inner side and the outer side in order to further enhance the cleaning effect. Further, in this embodiment, in order to enhance the cleaning effect, at least a part of the bristles of the brush 86 is directed diagonally upward so that the bristles of the brush 86 intersect the suction nozzle diagonally. In addition, the brush 86 can be replaced so that the brush 86 whose bristles have been worn or deteriorated due to long-term use can be replaced with a new brush 86, or the type of brush 86 can be replaced according to the type of suction nozzle to be cleaned. You can do it.

Further, in this embodiment, as shown in FIG. 6, the brush 86 descends and retracts into the nozzle cleaning unit 81, and as shown in FIG. 7, the brush 86 projects upward from the nozzle cleaning unit 81. The brush 86 is configured to move up and down with and from the cleaning position for cleaning the suction nozzle. As a result, the brush 86 is lowered to the retracted position at times other than cleaning (during automatic replacement of the nozzle cleaning unit 81, component suction operation of the component mounting machine 12, etc.), whereby the nozzle cleaning unit 81 is automatically replaced. It is possible to prevent the brush 86 from interfering with the suction nozzle or the like at the time of replacement or the component suction operation of the component mounting machine 12, and the brush 86 does not get in the way.

Further, in this embodiment, the type of the suction nozzle is based on the identification information (ID) of the suction nozzle to be cleaned transmitted from the control device 20 of the component mounting machine 12 to the control unit 83 of the nozzle cleaning unit 81. The height of the cleaning position is changed in multiple stages according to the situation. The height of the cleaning position may be constant, and the lowering stroke (Z-axis stroke) of the suction nozzle during cleaning may be changed according to the type of suction nozzle. Even in this case, depending on the type of suction nozzle. It is possible to obtain the same cleaning effect as changing the height of the cleaning position.

The elevating device 87 that moves the brush 86 up and down serves as a drive source, a slide plate 91 to which the elevating table 88 is attached via a support plate 89, a slide guide 92 that guides the slide direction of the slide plate 91 in the vertical direction, and a drive source. It is composed of a gear mechanism 94 and the like that convert the rotation of the motor 93 into vertical displacement and transmit it to the slide plate 91. The gear mechanism 94 is configured by meshing a rack 95 fixed to the slide plate 91 and a reduction gear 96 that transmits the rotation of the motor 93.

A position sensor 97 is provided as a means for detecting the position of the brush 86 that is moved up and down by the elevating device 87. As a result, as shown in FIG. 7, when the brush 86 is raised to the cleaning position, the detected member 98 fixed to the slide plate 91 via the support member 99 comes into contact with or approaches the position sensor 97. , It is detected that the position sensor 97 is activated (for example, turned on) and the brush 86 is raised to the cleaning position. Further, as shown in FIG. 6, when the brush 86 is lowered to the retracted position, the detected member 98 of the slide plate 91 is separated from the position sensor 97, so that the position sensor 97 is in an inactive state (for example, an off state). ), It is detected that the brush 86 is lowered to the retracted position. As the position sensor 97, either a contact type sensor (or a switch) may be used.

The motor 93 that drives the elevating device 87 has a built-in encoder (not shown) that outputs a pulse signal synchronized with its rotation, and the control unit 83 of the nozzle cleaning unit 81 counts the output pulse of the encoder. Raises or lowers the brush 86 to the cleaning position or the retracted position while detecting the height position of the brush 86. Then, at the position (cleaning position) where the position sensor 97 is activated (on-operated), the count value of the encoder pulse is reset to the initial value (0), and the motor 93 is controlled with this position as the reference position for elevating control.

The method of using the position sensor 97 is not limited to the above method, and the reference position at which the position sensor 97 is turned on does not have to be the cleaning position. It may be used to confirm the upper limit position).

As shown in FIG. 1, on the front side of the component mounting line 10, an automatic replacement device 26 for setting and removing (automatically replacing) the cassette type feeder 14 on the feeder setting unit 24 of each component mounting machine 12 is installed. Has been done. The automatic switching device 26 also sets and removes (automatically replaces) the cassette-type nozzle cleaning unit 81 on the feeder setting unit 24 of each component mounting machine 12. The automatic switching device 26 reads the feeder ID and unit ID from the feeder identification information recording unit of the feeder 14 and the unit identification information recording unit of the nozzle cleaning unit 81 when the feeder 14 and the nozzle cleaning unit 81 are automatically replaced. An information reading unit (not shown) is provided, and the feeder 14 and the nozzle cleaning unit 81 are identified based on the feeder ID and the unit ID read by the identification information reading unit.

Below the feeder set portion 24 of each component mounting machine 12, a stock portion 71 for temporarily storing a plurality of replacement feeders 14 and nozzle cleaning units 81 to be set in the feeder set portion 24 is provided. The automatic replacement device 26 takes out the feeder 14 and the nozzle cleaning unit 81 to be replaced from the feeder set unit 24 of each component mounting machine 12, collects them in the stock unit 71, and designates the feeder 14 and the nozzle cleaning unit 81 from the stock unit 71 in a production job (production program). The feeder 14 and the nozzle cleaning unit 81 are taken out and set in the feeder setting unit 24 of each component mounting machine 12. At this time, if the replacement feeder 14 or the nozzle cleaning unit 81 is not housed in the stock portion 71 of the component mounting machine 12, the automatic replacement device 26 uses the replacement feeder 14 from the storage 19 as described later. And the nozzle cleaning unit 81 are received and moved to the component mounting machine 12, and the replacement feeder 14 and the nozzle cleaning unit 81 are automatically replaced.

The storage 19 is provided with a control device and a connector for communication / power supply for each slot. The feeder 14 or the nozzle cleaning unit 81 is set in the slot provided in the storage 19, and the connector for communication / power supply provided in the feeder 14 or the nozzle cleaning unit 81 and the communication / power supply on the storage 19 side are used. When the connector is connected, the control device 20 or the control unit 83 of the feeder 14 or the nozzle cleaning unit 81 and the control device of the storage 19 communicate with each other, so that the control device of the storage 19 becomes the feeder identification information recording unit or the feeder identification information recording unit. The feeder ID or unit ID is acquired from the unit identification information storage unit. Further, the control device of the storage 19 can recognize which feeder 14 or nozzle cleaning unit 81 is set in which slot by communicating with the control device 20 or the control unit 83. The control device of the storage 19 may be connected to the production control computer 70 so as to be able to communicate with each other via the network 28.

On the front side of the component mounting line 10, a guide rail 74 for moving the automatic switching device 26 in the left-right direction (X direction) along the arrangement of the component mounting machines 12 is provided so as to extend in the X direction over the entire component mounting line 10. The automatic replacement device 26 moves between the most upstream storage 19 of the component mounting line 10 and the most downstream component mounting machine 12. The automatic switching device 26 takes out the feeder 14 and the nozzle cleaning unit 81 designated by the production job from the storage 19 and transports them to the stock portion 71 of the designated component mounting machine 12, or the used feeder 14 and the nozzle. The cleaning unit 81 is taken out from the stock unit 71 and collected in the storage 19.

As shown in FIG. 3, the control device 20 of each component mounting machine 12 of the component mounting line 10 and the control device 27 of the automatic replacement device 26 are a production management computer 70 (management device) that manages the entire component mounting line 10. They are communicably connected to each other via a network 28 such as a wired LAN or a wireless LAN, and the operation of each component mounting machine 12 of the component mounting line 10 and the operation of the automatic switching device 26 are managed by the production management computer 70. .. For example, information on which ID feeder 14 or nozzle cleaning unit 81 is set in which slot of the stock unit 71 of which component mounting machine 12 is obtained by communication via the network 28 by the control device 27 of the automatic switching device 26. , It is managed by the production control computer 70 or the control device 20 of the component mounting machine 12.

Further, the component mounting line 10 of the present embodiment includes a unit transport device 76 (see FIG. 1) that automatically travels between the work place where the worker works and the storage 19 and the worker is a unit at the work place. The replacement feeder 14 and the nozzle cleaning unit 81 are loaded on the transport device 76, the unit transport device 76 transports the replacement feeder 14 and the nozzle cleaning unit 81 to the storage 19, and the unit transport device 76 loads the replacement feeder 14 and the nozzle cleaning unit 81 into the storage 19. At the same time as transshipping, the replaced feeder 14 and the replaced nozzle cleaning unit 81 collected in the storage 19 are placed on the unit transport device 76 so as to return to the work place. In this way, at a work place away from the storage 19, the operator can replenish the replacement feeder 14 and the nozzle cleaning unit 81, and maintain and repair the collected replaced feeder 14 and the nozzle cleaning unit 81. It can be done efficiently. The unit transport device 76 is equipped with a unit remounting mechanism (not shown) for remounting the feeder 14 and the nozzle cleaning unit 81 between the unit transport device 76 and the storage.

The production control computer 70 communicates with the unit transport device 76 via a wireless LAN or the like, and also manages the operation of the unit transport device 76. In this embodiment, the work place where the worker works and the unit transport device 76 are shared by a plurality of component mounting lines 10. In this way, the feeder 14 and the nozzle cleaning unit 81 for replacement of the plurality of component mounting lines 10 to the storage 19 can be replenished, and the replaced feeder 14 and the nozzle collected from the plurality of component mounting lines 10 can be replenished. Maintenance and repair of the cleaning unit 81 can be performed by the same worker in a common work place, and there is no need to provide a work place or unit transport device 76 for each component mounting line 10. A plurality of component mounting lines 10 can be compactly installed, and the number of workers engaged in the management of the plurality of component mounting lines 10 can be reduced, which further saves labor.

The control device 20 and / or the production control computer 70 of each component mounting machine 12 serves as a monitoring device for monitoring the cleaning implementation status (adhesion status of foreign matter such as dust) and the production status of the suction nozzles of each component mounting machine 12. The function is installed, and the automatic replacement device 26 moves along the arrangement of a plurality of component mounting machines 12 on the component mounting line 10 based on the monitoring result of the monitoring device, and the nozzle cleaning unit is used between the component mounting machines 12. I try to reuse 81.

Specifically, the monitoring device monitors whether or not the suction nozzle of each component mounting machine 12 needs to be cleaned based on the operation data of each component mounting machine 12. At this time, as the operation data of each component mounting machine 12, the suction nozzle usage time, the number of times the component is adsorbed, the frequency of occurrence of the component adsorption error, the component adsorption rate (component adsorption success rate or component adsorption failure rate), and the adsorption nozzle are adsorbed. It is sufficient to monitor whether or not the suction nozzle of each component mounting machine 12 needs to be cleaned by using at least one of the frequency of occurrence of the image processing error of the component or data correlating with the frequency. The frequency of occurrence of component adsorption error and image processing error may be, for example, the number of error occurrences per predetermined number of times (per predetermined time) or the number of consecutive error occurrences. Data indicating whether or not a adsorption error or an image processing error is likely to occur may be used.

Alternatively, while the suction nozzle of each component mounting machine 12 is not in the component suction / mounting operation, the suction nozzle is imaged by the component imaging camera to recognize the presence or absence of foreign matter such as dust adhering to the suction nozzle by image processing. Then, it may be monitored whether or not the suction nozzle of each component mounting machine 12 needs to be cleaned.

When the monitoring device determines that cleaning of the suction nozzle of any of the component mounting machines 12 is necessary based on the monitoring result, the nozzle cleaning unit 81 is set in the feeder setting unit 24 of the component mounting machine 12. Judge whether or not. As a result, when the monitoring device determines that the nozzle cleaning unit 81 is not set in the feeder setting unit 24 of the component mounting machine 12, the component mounting machine is referred to the control device 27 of the automatic replacement device 26. A signal instructing the nozzle cleaning unit 81 to be set in the feeder setting unit 24 of the 12 is output. As a result, the automatic switching device 26 sets the nozzle cleaning unit 81 in the feeder setting unit 24 of the component mounting machine 12.

At this time, the automatic switching device 26 can take out any one of the plurality of feeders 14 set in the feeder set unit 24 when there is no empty slot in the feeder set unit 24 of the component mounting machine 12. It waits until the state is reached, and when any one of the feeders 14 is ready to be taken out, the feeder 14 is taken out and the nozzle cleaning unit 81 is set. When the component mounting machine 12 is stopped due to an error, the automatic replacement device 26 does not need to stand by even if there is no empty slot in the feeder set portion 24 of the component mounting machine 12, so that the component mounting machine 12 is immediately concerned. Take out any one of the feeders 14 set in the feeder set unit 24 and set the nozzle cleaning unit 81. For information on the presence / absence and position of empty slots, the control device 20 of the component mounting machine 12 communicates between the control device 20 of the component mounting machine 12 and the control device 20 or the control unit 83 of the feeder 14 or the nozzle cleaning unit 81. It may be judged based on. Alternatively, if the feeder set unit 24 is provided with a sensor for detecting whether or not the feeder 14 or the nozzle cleaning unit 81 is mounted, the control device 20 of the component mounting machine determines the empty slot based on the detection of the sensor. The presence / absence and position may be determined.

After that, the control device 20 of the component mounting machine 12 outputs a cleaning start signal to the control unit 83 of the nozzle cleaning unit 81 set in the feeder set unit 24. As a result, the control unit 83 of the nozzle cleaning unit 81 energizes the motor 93 to operate the elevating mechanism 87, and as shown in FIG. 7, raises the brush 86 from the retracted position to the cleaning position and stops it. At this time, based on the identification information of the suction nozzle to be cleaned sent from the component mounting machine 12 control device 20 to the control unit 83 of the nozzle cleaning unit 81, the height of the cleaning position according to the type of the suction nozzle. To change.

On the other hand, the control device 20 of the component mounting machine 12 moves the suction nozzle to be cleaned to a position directly above the brush 86 of the nozzle cleaning unit 81 by the mounting head moving device (not shown), and then moves the suction nozzle. By lowering and inserting the entire portion from the tip (lower end) of the suction nozzle to the root into the brush 86, the portion from the tip to the root of the suction nozzle is cleaned. At this time, the suction nozzle may be reciprocated (vibrated) in the brush 86 in the XY directions, moved up and down, or rotated to enhance the cleaning effect. Alternatively, the brush 86 may be configured to rotate during cleaning.

After that, the control device 20 of the component mounting machine 12 raises the suction nozzle to return it to the original position at the end of cleaning, and outputs a cleaning end signal to the control unit 83 of the nozzle cleaning unit 81. As a result, the control unit 83 of the nozzle cleaning unit 81 energizes the motor 93 to operate the elevating device 87, lowers the brush 86 from the cleaning position to the retracted position, and stops the brush 86, as shown in FIG. In this way, by lowering the brush 86 to the retracted position at the end of cleaning, the brush 86 interferes with the suction nozzle or the like when the nozzle cleaning unit 81 is automatically replaced or when the parts mounting machine 12 is sucking parts. It can be prevented and the brush 86 does not get in the way.

Further, the control device 20 of the component mounting machine 12 or the production management computer 70 for which the cleaning of the suction nozzle has been completed is a nozzle cleaning unit from the feeder set unit 24 of the component mounting machine 12 to the control device 27 of the automatic switching device 26. A signal instructing to take out 81 is output. As a result, the automatic replacement device 26 takes out the nozzle cleaning unit 81 from the feeder set unit 24 of the component mounting machine 12 and collects it in the stock unit 71 after cleaning the suction nozzle, and replaces it with the feeder as necessary. 14 is set in the feeder set unit 24.

Even if the nozzle cleaning unit 81 is not taken out from the feeder set unit 24 of the component mounting machine 12 immediately after the cleaning of the suction nozzle is completed, the production of the component mounting machine 12 is not hindered and the nozzle cleaning unit 81 can be used. When it is not necessary to transport the nozzle cleaning unit to another component mounting machine 12, the nozzle cleaning unit 81 is continuously set in the feeder setting unit 24 of the component mounting machine 12 for a while after the cleaning is completed, and the automatic switching device 26 is used for the feeder 14. After waiting until the standby state in which the automatic replacement operation is not performed is reached, the nozzle cleaning unit 81 is taken out from the feeder set unit 24 of the component mounting machine 12 and collected in the stock unit 71, or transported to another component mounting machine 12. You can do it.

Further, when the automatic replacement instruction of the nozzle cleaning unit 81 and the automatic replacement instruction of the feeder 14 overlap during the operation of each component mounting machine 12, the automatic replacement device 26 first automatically replaces the feeder 14. The nozzle cleaning unit 81 is automatically replaced. The automatic replacement of the feeder 14 may lead to a delay in production even if it is slightly delayed, but the automatic replacement of the nozzle cleaning unit 81 does not lead to a delay in production even if it is slightly delayed. Therefore, the nozzle cleaning unit When the automatic replacement instruction of the 81 and the automatic replacement instruction of the feeder 14 overlap, the automatic replacement of the feeder 14 is prioritized over the automatic replacement of the nozzle cleaning unit 81.

In the present embodiment described above, the nozzle cleaning unit 81 can also be automatically replaced by using the automatic replacement device 26 that automatically replaces the feeder 14 set in the feeder setting unit 24 of the component mounting machine 12, so that the nozzle cleaning can be performed. It is not necessary for the operator to manually replace the unit 81, which saves labor. Moreover, since one nozzle cleaning unit 81 can be reused for a plurality of component mounting machines 12, the number of nozzle cleaning units 81 to be prepared can be reduced, and the cost of preparing the nozzle cleaning unit 81 can be reduced. Can be reduced.

Further, when it becomes necessary to clean the suction nozzle of the component mounting machine 12, the nozzle cleaning unit 81 is promptly set in the feeder set portion 24 of the component mounting machine 12 by the automatic replacement device 26, and after the cleaning is completed, the nozzle cleaning unit 81 is promptly set. The nozzle cleaning unit 81 can be quickly taken out, the suction nozzle can be cleaned efficiently, productivity can be prevented from decreasing, and parts can be mounted due to an operator's mistake in attaching / detaching the nozzle cleaning unit 81. It is also possible to prevent an error stop of the machine 12.

In this embodiment, the brush 86 of the nozzle cleaning unit 81 is moved up and down between the cleaning position and the retracted position, but it goes without saying that the brush 86 may be fixed at a fixed position.

Further, the nozzle cleaning unit that can be used is not limited to the one using a brush, and for example, the nozzle cleaning unit having a different cleaning method may be used, for example, the suction nozzle may be blown with air for cleaning. You can do it.

In addition, the present invention is not limited to the above-described embodiment, for example, the automatic replacement timing of the nozzle cleaning unit 81 may be appropriately changed, the configuration of the component mounting line 10 or the automatic replacement device 26 may be changed, or the unit transport device may be changed. Needless to say, it is possible to make various changes within a range that does not deviate from the gist, such as a configuration in which 76 is omitted.

10 ... component mounting line, 11 ... circuit board, 12 ... component mounting machine, 14 ... cassette type feeder, 15 ... mounting head, 16 ... head moving device, 19 ... storage, 20 ... component mounting machine control device (monitoring) Equipment), 24 ... Feeder set unit, 26 ... Automatic switching device, 70 ... Production control computer (monitoring device), 71 ... Stock unit, 76 ... Unit carrier, 81 ... Cassette type nozzle cleaning unit, 86 ... Brush

Claims (8)

A nozzle cleaning unit automatic replacement system that automatically replaces the nozzle cleaning unit that cleans the suction nozzles of the component mounting machine.
The nozzle cleaning unit is configured to be replaceably set with a feeder in the feeder set portion of the component mounting machine.
A plurality of feeders to be set in the feeder set section, a stock section for accommodating the nozzle cleaning unit, and a stock section.
It is provided with an automatic exchange device that takes out a feeder to be replaced from the feeder set section and collects it in the stock section, and also takes out a designated feeder from the stock section and sets it in the feeder set section.
When cleaning the suction nozzle, the automatic switching device takes out the nozzle cleaning unit from the stock unit and sets it in the feeder set unit, and sets the nozzle cleaning unit in the feeder set unit while the component mounting machine is in operation. If there is no empty slot in the feeder set section when setting to, wait until any one of the plurality of feeders set in the feeder set section can be taken out, and wait until any one of them can be taken out. When the feeder is ready to be taken out, the feeder is taken out and the nozzle cleaning unit is set, and when the component mounting machine is stopped, even if there is no empty slot in the feeder set portion. A nozzle cleaning unit automatic replacement system that takes out any one of the feeders set in the feeder set unit and sets the nozzle cleaning unit. When the automatic replacement instruction of the nozzle cleaning unit and the automatic replacement instruction of the feeder overlap during the operation of the component mounting machine, the automatic replacement device first automatically replaces the feeder and then cleans the nozzle. The nozzle cleaning unit automatic replacement system according to claim 1, wherein the unit is automatically replaced. The height dimension and depth dimension of the nozzle cleaning unit are shared with the height dimension and depth dimension of the feeder.
The nozzle cleaning unit automatic replacement system according to claim 1 or 2 , wherein the mounting structure of the nozzle cleaning unit to the feeder set portion is common to the mounting structure of the feeder. The nozzle cleaning unit includes a brush for cleaning the suction nozzle and an elevating device for moving the brush up and down, and a cleaning position for cleaning the brush with the elevating device when cleaning the suction nozzle. The nozzle cleaning unit automatic replacement system according to any one of claims 1 to 3 , wherein the brush is lowered from the cleaning position to a retracted position below the cleaning position. It is applied to a component mounting line in which a plurality of the component mounting machines are arranged along a transport path for transporting a circuit board, and each component mounting machine mounts a component on the circuit board to produce a component mounting board.
The automatic exchange device moves along an array of the plurality of component mounting machines to automatically exchange the feeder and the nozzle cleaning unit with the feeder set portion of each component mounting machine, according to claims 1 to 1. Nozzle cleaning unit automatic replacement system according to any one of 4. Equipped with a monitoring device that monitors the cleaning implementation status and production status of the suction nozzles of each component mounting machine.
The fifth aspect of claim 5, wherein the automatic replacement device moves along an array of the plurality of component mounting machines based on the monitoring result of the monitoring device, and reuses the nozzle cleaning unit between the component mounting machines. Nozzle cleaning unit automatic replacement system. The monitoring device monitors whether or not the suction nozzle of each component mounting machine needs to be cleaned based on the operation data of each component mounting machine.
The nozzle cleaning according to claim 6 , wherein the automatic replacement device sets the nozzle cleaning unit in a feeder set portion of a component mounting machine for which cleaning of the suction nozzle is determined to be necessary based on the monitoring result of the monitoring device. Unit automatic replacement system. The monitoring device uses the operating data of each component mounting machine as the usage time of the suction nozzle, the number of times the component is sucked, the frequency of occurrence of the component suction error, the component suction rate, and the occurrence of an image processing error of the component sucked by the suction nozzle. The automatic nozzle cleaning unit replacement system according to claim 7 , wherein the suction nozzle of each component mounting machine is monitored for cleaning based on at least one of the frequencies or data correlating with the frequency.

Images