Component Mounting System

Abstract

To increase the productivity of a component mounting system.SOLUTION: A component mounting system includes a storage facility 19 that stores replacement units 81 for a plurality of component mounters 12 arranged along a transport path for transporting circuit boards, a unit transporting device 76 that automatically travels between the storage facility 19 and a work location away from the storage facility 19, loading the replacement unit 81 and transporting it to the storage facility 19, and then returning to the work location with replaced units 81 that have been collected from the plurality of component mounters 12 to the storage facility 19, and an automatic exchange device 26 that moves in front of the storage facility 19, removes the replacement unit 81 from the storage facility 19, then moves in front of the component mounter 12 to be automatically replaced, automatically exchanges the unit 81 that has the component mounter 12 that needs to be automatically replaced for the replacement unit 81 and collects it.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This specification discloses a technology relating to a component mounting system configured by arranging a plurality of component mounters. [Background technology]

[0002] Generally, a component mounting line is configured with multiple component mounters arranged along a transport path for transporting circuit boards, and each component mounter picks up components supplied from a feeder with a suction nozzle and mounts them on a circuit board to produce component-mounted boards. If the feeder of one of the component mounters breaks down during production, or if the suction nozzle becomes damaged or clogged, an abnormality such as a component pickup error will occur. When such an abnormality is detected, the operation of the component mounter is stopped, and an operator replaces the feeder or suction nozzle before restarting the operation of the component mounter. Furthermore, since feeders and suction nozzles are more prone to failure as they are used for a long time, they must be periodically replaced and maintained to prevent such failures.

[0003] Therefore, in the component mounter of Patent Document 1 (Japanese Patent Laid-Open No. 2002-190700), the component pickup rate, mounting rate, component pickup position deviation amount, mounting position deviation amount, etc. are calculated for each feeder or suction nozzle during production to monitor whether maintenance is required, and when maintenance is required for any feeder or suction nozzle, that feeder or suction nozzle is displayed on a display unit, production is stopped, and an operator is prompted to perform maintenance on the feeder or suction nozzle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-190700 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when a feeder or suction nozzle requiring maintenance is displayed on the display, the operator must quickly and manually remove the feeder or suction nozzle from the mounter, attach a replacement feeder or suction nozzle, and resume production, which is a tedious task. Moreover, if the operator is performing another task when the display shows that a feeder or suction nozzle requires maintenance, the feeder or suction nozzle requiring maintenance cannot be replaced immediately, which lengthens the production downtime and reduces the operating rate (productivity). [Means for solving the problem]

[0006] The component mounting system according to claim 1 includes a plurality of component mounters arranged along a transport path for transporting circuit boards, the component mounters mounting components onto the circuit boards; a storage cabinet arranged alongside the component mounters in an arrangement direction of the component mounters, for storing replacement units that can be replaced with the component mounters; a unit transporting device that automatically travels between a work location remote from the storage and the storage, loads the replacement unit, transports it to the storage, and returns to the work location with replaced units that have been collected from the multiple mounters to the storage; an automatic exchange device that moves in front of the storage, takes out a replacement unit from the storage, then moves in front of the mounter that is to be automatically replaced, automatically exchanges the unit that needs to be automatically replaced for the mounter with the replacement unit, and collects it; Equipped with.

[0007] In this configuration, a unit transporting device that automatically travels between the storage and a work site distant from the storage loads a replacement unit and transports it to the storage, and then returns to the work site carrying replaced units that have been collected from multiple component mounters to the storage, so that replacement units can be efficiently replenished and replaced units can be efficiently collected between the work site and the storage. Moreover, the automatic exchange device receives a replacement unit from the storage, moves in front of the component mounter that is to be automatically replaced, and automatically replaces the unit that needs to be automatically replaced in the component mounter with the replacement unit and collects it, so that replacement units can be efficiently exchanged for replaced units between the storage and each component mounter, and replaced units removed from each component mounter can be efficiently collected.

[0008] The component mounting system according to claim 2 includes a plurality of component mounters arranged along a transport path for transporting circuit boards, the component mounters mounting components onto the circuit boards; a storage facility for storing replacement units that can be replaced with the plurality of component mounters; In a component mounting system provided with a plurality of component mounting lines, a unit transporting device that automatically travels between a common work location located away from the storage warehouses of the plurality of component mounting lines and the storage warehouse in order to perform maintenance and repair of the replaced units that have been collected in the storage warehouses of the plurality of component mounting lines, loads the replacement units, transports them to the storage warehouses of the plurality of component mounting lines, and returns to the work location with the replaced units that have been collected in the storage warehouses of the plurality of component mounting lines on board; an automatic exchange device that moves in front of the storage, takes out a replacement unit from the storage, then moves in front of the component mounter that is to be automatically replaced, automatically replaces the unit that needs to be automatically replaced with the replacement unit, and collects it; Equipped with.

[0009] With this configuration, the work area and unit transport device are shared by multiple component mounting lines, so the same worker can replenish the storage warehouses of the multiple component mounting lines with replacement units and perform maintenance and repairs on the replaced units that have been collected into the storage warehouses of the multiple component mounting lines at a common work area. This eliminates the need to provide a work area or unit transport device for each component mounting line, and as a result, multiple component mounting lines can be installed compactly within a factory, and the number of workers involved in managing the multiple component mounting lines can be reduced, resulting in further labor savings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing the overall configuration of a component mounting line according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view showing the schematic configuration of the automatic exchange device and the component mounter. [Figure 3] FIG. 3 is a block diagram showing the schematic configuration of a management system for a component mounting line equipped with an automatic exchange device. [Figure 4] FIG. 4 is a perspective view showing a cassette-type feeder. [Figure 5] FIG. 5 is a perspective view showing a cassette-type suction nozzle replacement unit. [Figure 6] FIG. 6 is a perspective view showing a state in which the rotary nozzle station has been removed from the cassette-type suction nozzle replacement unit. DETAILED DESCRIPTION OF THE INVENTION

[0011] An embodiment will be described below.

[0012] First, the configuration of the component mounting line 10 will be described with reference to FIGS.

[0013] The component mounting line 10 is configured by arranging a plurality of component mounters 12 along the conveying direction (X direction) of the circuit boards 11, and on the board carrying-in side of the component mounting line 10, there are installed a solder printer (not shown) that prints solder on the circuit boards 11, a storage cabinet 19 that stores cassette-type feeders 14 (see FIG. 4) and cassette-type suction nozzle replacement units 81 (see FIGS. 5 and 6), etc. In this embodiment, the cassette-type feeders 14 and cassette-type suction nozzle replacement units 81 are automatically replaceable units.

[0014] As shown in FIG. 2, each component mounter 12 is provided with two conveyors 13 for transporting circuit boards 11, a mounting head 15 that holds interchangeable suction nozzles (not shown) that pick up components supplied from a cassette-type feeder 14 and mount them on the circuit board 11, a head moving device 16 that moves the mounting head 15 in the X and Y directions (left and right, front and back directions), and a display device 23 such as an LCD display or CRT.

[0015] Each component mounter 12 on the component mounting line 10 transports the circuit board 11 transported from the upstream component mounter 12 to a predetermined position using a conveyor 13, clamps the circuit board 11 using a clamping mechanism (not shown), picks up components supplied from a cassette-type feeder 14 using a suction nozzle of a mounting head 15, moves the component from the suction position to an imaging position, images the component from its underside using a component imaging camera (not shown) to determine the amount of deviation in the suction position of the component, and then corrects the amount of deviation in the suction position before mounting the component on the circuit board 11 on the conveyor 13, thereby producing a component-mounted board.

[0016] 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 from a transparent or opaque plastic plate or metal plate, and its side portion (cover) can be opened and closed. A tape loading section 35 is provided inside the cassette case 32, into which a tape reel 34 around which a component supply tape 33 is wound is detachably (replaceably) loaded. A reel holding shaft 36 that rotatably holds the tape reel 34 is provided at the center of the tape loading section 35.

[0017] Inside the cassette case 32, there are provided a tape feeding mechanism 38 that feeds the component supply tape 33 pulled out from the tape reel 34 to the component suction position, and a top film peeling mechanism 39 that peels off a top film 40 (also called a cover tape) from the component supply tape 33 just before the component suction position to expose the components inside the component supply tape 33.

[0018] The tape feed mechanism 38 is composed of a sprocket 42 located near the lower part of the component suction position, a motor 43 that rotates the sprocket 42, and other components. The teeth of the sprocket 42 engage with tape feed holes formed at a predetermined pitch on one side edge of the component supply tape 33, thereby rotating the sprocket 42 and feeding the component supply tape 33 to the component suction position.

[0019] The top film peeling mechanism 39 is composed of a tape presser 45 for pressing down the component supply tape 33 just before the component suction position and peeling off the top film 40 from the upper surface of the component supply tape 33, a top film feed gear mechanism 47 for pulling the top film 40 peeled off by the tape presser 45 in the direction opposite to the tape feed direction and feeding it into a top film recovery section 46 at the top of the cassette case 32, and a motor 48 for driving the top film feed gear mechanism 47.

[0020] A waste tape discharge passage 50 is provided at the edge of the cassette case 32 on the tape feed direction side, extending downward to guide and discharge the waste tape 33a (in this embodiment 1, only the carrier tape from which the top film 40 has been peeled off) that has passed through the component suction position and from which components have been removed, and the outlet 50a of the waste tape discharge passage 50 is provided at a position below the center of the end face of the cassette case 32 on the tape feed direction side.

[0021] A control device 52 is provided inside the cassette case 32, which controls the motor 43 of the tape feed mechanism 38 and the motor 48 of the top film peeling mechanism 39. In addition, although not shown, the cassette case 32 is provided with a communication and power connector that is connected to a communication and power connector on the component mounter 12 side.

[0022] Next, the configuration of the cassette-type suction nozzle replacement unit 81 will be described with reference to FIGS. The cassette case 83 of the cassette-type suction nozzle replacement unit 81 is formed of a transparent or opaque plastic plate or metal plate, similar to the cassette-type feeder 14, and its side portion (cover) can be opened and closed. A circular, recessed nozzle station loading section 85 is provided within the cassette case 83, into which a disk-shaped rotary nozzle station 84 is detachably (replaceably) loaded. A drive shaft 86 (see FIG. 6) is provided at the center of the nozzle station loading section 85, facing inward in the width direction of the cassette case 83, and the center portion of the rotary nozzle station 84 is detachably connected to the drive shaft 86 in a rotationally transmissible manner. The rotary nozzle station 84 is configured to detachably hold a plurality of suction nozzles 87, which are radially arranged at a predetermined pitch around its outer periphery and are used to replace the suction nozzles of the mounting head 15 of the component mounter 12.

[0023] Meanwhile, a rotary drive device 88 that rotates the rotary nozzle station 84 is provided inside the cassette case 83. This rotary drive device 88 is composed of a motor 89 that serves as a drive source and a gear mechanism 90 that transmits the rotation of this motor 89 to the drive shaft 86.

[0024] A nozzle replacement opening 91 is formed on the top end face of the cassette case 83 at a position corresponding to the uppermost end of the rotary nozzle station 84 (directly above the center of the rotary nozzle station 84), and replacement of the suction nozzle 87 is performed between the rotary nozzle station 84 and the mounting head 15 of the component mounter 12 through this nozzle replacement opening 91. The cassette case 83 is provided with a shutter mechanism 92 that opens and closes the nozzle replacement opening 91. The shutter mechanism 92 is made up of a shutter plate 93 that slides along the nozzle replacement opening 91, a motor 94 that serves as a drive source, a feed gear 95 that converts the rotation of the motor 94 into linear motion, and a link member 96 that connects the feed gear 95 and the shutter plate 93.

[0025] When the suction nozzle 87 in the cassette-type suction nozzle replacement unit 81 set in the feeder setting section 24 of the component mounter 12 is to be held by the mounting head 15 of the component mounter 12, the mounting head 15 is moved above the nozzle replacement opening 91 of the suction nozzle replacement unit 81, and the shutter plate 93 of the shutter mechanism 92 is opened to open the nozzle replacement opening 91. Then, the rotary nozzle station 84 in the suction nozzle replacement unit 81 is rotated appropriately to position the suction nozzle 87 to be replaced at the nozzle replacement opening 91, and then the nozzle holder (not shown) of the mounting head 15 is lowered to hold the suction nozzle 87 on the nozzle holder of the mounting head 15 through the nozzle replacement opening 33, and then the nozzle holder of the mounting head 15 is raised to remove the suction nozzle 87 from the rotary nozzle station 84.

[0026] Furthermore, when returning the suction nozzle held in the nozzle holder of the mounting head 15 to an empty slot of the rotary nozzle station 84 in the suction nozzle replacement unit 81, the rotary nozzle station 84 is rotated appropriately to position the empty slot of the rotary nozzle station 84 at the nozzle replacement opening 33, and the nozzle holder of the mounting head 15 is lowered to return the suction nozzle held in the nozzle holder of the mounting head 15 to the empty slot of the rotary nozzle station 84.

[0027] A control device 97 that controls the motor 89 of the rotation drive device 88 and the motor 94 of the shutter mechanism 92 is provided inside the cassette case 83. In addition, although not shown, the cassette case 83 is provided with a communication / power connector that is connected to a communication / power connector on the component mounter 12 side.

[0028] 1, an automatic exchange device 26 is installed on the front side of the component mounting line 10, which sets and removes cassette-type feeders 14 to and from the feeder setting section 24 of each component mounter 12. This automatic exchange device 26 also sets and removes cassette-type suction nozzle replacement units 81 to and from the feeder setting section 24 of each component mounter 12.

[0029] A stock section 71 is provided below the feeder setting section 24 of each mounter 12 to temporarily store a plurality of replacement feeders 14 and suction nozzle replacement units 81 to be set in the feeder setting section 24. The automatic exchanger 26 removes the feeders 14 and suction nozzle replacement units 81 to be replaced from the feeder setting section 24 of each mounter 12 and returns them to the stock section 71, and also removes the feeders 14 and suction nozzle replacement units 81 specified in the production job (production program) from the stock section 71 and sets them in the feeder setting section 24 of each mounter 12. At this time, if the replacement feeders 14 and suction nozzle replacement units 81 are not stored in the stock section 71 of the mounter 12, the automatic exchanger 26 receives the replacement feeders 14 and suction nozzle replacement units 81 from the storage 19, moves them to the mounter 12, and automatically replaces the replacement feeders 14 and suction nozzle replacement units 81, as described below.

[0030] On the front side of the component mounting line 10, guide rails 74 that move the automatic exchanger 26 in the left-right direction (X direction) along the arrangement of the component mounters 12 are provided so as to extend in the X direction across the entire component mounting line 10, and the automatic exchanger 26 moves between the most upstream storage 19 and the most downstream component mounter 12 of the component mounting line 10. The automatic exchanger 26 takes out the feeders 14 and suction nozzle replacement units 81 specified in the production job from the storage 19 and transports them to the stock section 71 of the specified component mounter 12, or takes out used feeders 14 and suction nozzle replacement units 81 from the stock section 71 and collects them in the storage 19.

[0031] As shown in FIG. 3, the control device 20 of each mounter 12 on the component mounting line 10 and the control device 27 of the automatic exchanger 26 are connected to a production management computer 70 (management device) that manages the entire component mounting line 10 via a network 28 such as a wired LAN or wireless LAN so that they can communicate with each other, and the production management computer 70 manages the operation of each mounter 12 on the component mounting line 10 and the operation of the automatic exchanger 26.

[0032] Furthermore, the component mounting line 10 of this embodiment is equipped with a unit transporting device 76 (see FIG. 1) that automatically travels between a work location where a worker works and the storage 19. At the work location, the worker loads a replacement feeder 14 or a suction nozzle exchange unit 81 onto the unit transporting device 76, which then transports it to the storage 19. The unit transporting device 76 then transfers the replacement feeder 14 or suction nozzle exchange unit 81 to the storage 19, and also loads the replaced feeder 14 or replaced suction nozzle exchange unit 81 that has been collected in the storage 19 onto the unit transporting device 76, which then returns to the work location. The unit transporting device 76 is equipped with a unit transfer mechanism (not shown) that transfers the feeder 14 or suction nozzle exchange unit 81 between the unit transporting device 76 and the storage 19.

[0033] The production management computer 70 communicates with the unit conveying device 76 via wireless LAN or the like, and also manages the operation of the unit conveying device 76. In this embodiment, the work area where workers work and the unit conveying device 76 are shared by multiple component mounting lines 10.

[0034] The control device 20 of each mounter 12 also functions as an operation monitoring device that monitors the operating status of the feeder 14 and suction nozzle replacement unit 81, which are automatically replaceable units of each mounter 12, and monitors whether the automatically replaceable units require maintenance or replacement due to a malfunction. In the following description, "automatically replaceable unit" means either the "feeder 14" or the "suction nozzle replacement unit 81."

[0035] Specifically, the control device 20 of each mounter 12 monitors the automatically replaceable units, such as the tape feed time of the feeder 14, the suction nozzle flow rate, the nozzle length, the axis operation time of the mounting head 15, and the valve operation time, to determine whether the automatically replaceable units require maintenance or replacement due to a malfunction, based on whether or not they exceed a predetermined threshold. Alternatively, the control device 20 may monitor at least one of the following operating conditions of the automatically replaceable units: the presence or absence of a malfunction, the cumulative operating time, the number of operations, the error rate (e.g., the rate of component suction failure, the rate of incorrect suction nozzle replacement due to malfunction of the suction nozzle replacement unit 81), and the number of errors, to determine whether the automatically replaceable units require maintenance or replacement due to a malfunction. For example, when the cumulative operating time, the number of operations, the error rate, or the number of errors exceed a predetermined threshold (criterion) set for each, it determines that the automatically replaceable units require replacement, and sends this information to the production management computer 70. As a result, the production management computer 70 moves the automatic exchange device 26 to the component mounter 12 that requires unit replacement, and has the automatic exchange device 26 automatically replace the automatically replaceable unit of the component mounter 12 with a replacement unit.

[0036] Furthermore, in this embodiment, a judgment criteria change unit (not shown) is provided that allows an operator to change the judgment criteria used by the control device 20 of each mounter 12 to determine whether an automatically replaceable unit requires maintenance or replacement due to a malfunction. In this way, for example, if the operator believes that the number of replacements due to maintenance is too high, the operator can change the judgment criteria to reduce the number of replacements due to maintenance, or if the number of replacements due to malfunction is too high, the operator can change the judgment criteria to increase the number of replacements due to maintenance. This allows the operator to change the judgment criteria to reduce both the number of replacements due to maintenance and the number of replacements due to malfunction. The judgment criteria change unit may be configured using an input operation device (not shown), such as a keyboard, mouse, or touch panel, connected to the control device 20 of the mounter 12.

[0037] Furthermore, when the control device 20 of each mounter 12 can predict when an automatically replaceable unit will require maintenance or replacement due to a malfunction, it transmits information regarding the replacement of the automatically replaceable unit in advance to the production management computer 70. Then, when the production management computer 70 receives information regarding the replacement of an automatically replaceable unit of a mounter 12 in advance from the control device 20 of that mounter 12, it moves the automatic exchanger 26 to or near that mounter 12 and places it on standby in preparation for the replacement of the automatically replaceable unit. In this way, the automatically replaceable units of each mounter can be replaced in a short time, reducing production downtime due to replacement and improving the operating rate (productivity).

[0038] Furthermore, in order to prepare for the replacement of automatically replaceable units in each mounter 12, the production management computer 70 utilizes the period when the automatic exchanger 26 is not automatically replacing automatically replaceable units to move the automatic exchanger 26 to each mounter 12 and store the replacement units in the stock section 71, and also collect the replaced units from the stock section 71. Even in this way, the replacement of automatically replaceable units in each mounter 12 can be carried out efficiently.

[0039] According to the embodiment described above, the control device 20 of each mounter 12 monitors the operating status of the automatically replaceable unit to monitor whether the automatically replaceable unit requires maintenance or replacement due to a malfunction. When it is determined that the automatically replaceable unit of any mounter 12 requires maintenance or replacement due to a malfunction, the production management computer 70 moves the automatic exchanger 26 to that mounter 12 and automatically replaces the automatically replaceable unit of that mounter 12 with a replacement unit. Therefore, when the automatically replaceable unit of any mounter 12 requires maintenance or replacement due to a malfunction, an operator does not have to replace the automatically replaceable unit of that mounter 12, thereby reducing the amount of work the operator has to do. Moreover, when the automatically replaceable unit of a mounter 12 requires maintenance or replacement due to a malfunction, the automatically replaceable unit can be quickly replaced by the automatic exchanger 26, which has the advantage of allowing production to be resumed early and preventing a significant decrease in operating rate (productivity).

[0040] Furthermore, the component mounting line 10 is provided with a storehouse 19 for storing replacement units to be replaced with automatically replaceable units of a plurality of component mounters 12, and the automatic exchanger 26 receives replacement units from the storehouse 19 in accordance with instructions from the production management computer 70, moves to the component mounter 12 that is to be automatically replaced, automatically replaces the automatically replaceable unit of that component mounter 12 with the replacement unit, and then transfers the recovered replaced unit back to the storehouse 19. This allows for efficient interchange of replacement units with replaced units between the storehouse 19 and each component mounter 12, and allows efficient recovery of replaced units removed from each component mounter 12.

[0041] Furthermore, a unit transporting device 76 is provided that moves between a work location where a worker works and the storage 19, and at the work location, the worker loads a replacement unit onto the unit transporting device 76, which then transports it to the storage 19, where it transfers the replacement unit to the storage 19 and also loads the replaced unit that has been collected in the storage 19 onto the unit transporting device 76 and returns to the work location, so that a worker can efficiently replenish replacement units and perform maintenance and repairs on the collected replaced units at a work location away from the storage 19. However, in the present invention, the unit transporting device 76 may be omitted and the supply of replacement units to the storage 19 and the collection of replaced units from the storage 19 may be performed manually by the worker.

[0042] Furthermore, in this embodiment, the work area and unit transport device 76 are shared by multiple component mounting lines 10, so the same worker can replenish replacement units in the storage 19 of multiple component mounting lines 10 and perform maintenance and repair of replaced units collected from multiple component mounting lines 10 at a common work area. This eliminates the need to provide a work area and unit transport device 76 for each component mounting line 10, allowing multiple component mounting lines 10 to be installed compactly within a factory and reducing the number of workers required to manage multiple component mounting lines 10, thereby enabling further labor savings. However, the present invention may also provide a separate work area and unit transport device 76 for each component mounting line 10.

[0043] In this embodiment, the control device 20 of each mounter 12 is configured to function as an operation monitoring device that monitors the operating status of the automatically replaceable unit and monitors whether the automatically replaceable unit requires maintenance or replacement due to a malfunction, but an external computer such as the production management computer 70 may be used as the operation monitoring device to centrally monitor the operating status of the automatically replaceable units of multiple mounters 12.

[0044] Furthermore, the automatically replaceable units of each component mounter 12 are not limited to the feeder 14 and the suction nozzle replacement unit 81. For example, if the component mounter 12 holds the mounting head 15 in an automatically replaceable manner, the mounting head 15 may also be an automatically replaceable unit, and if the mounting head 15 holds a chuck for gripping components in an exchangeable manner with the suction nozzle, the chuck may also be an automatically replaceable unit.

[0045] In addition, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made within the scope of the present invention without departing from the spirit and scope of the invention, such as changing the configuration of the component mounting line 10, changing the configuration of the automatic exchange device 26 or the unit conveying device 76, or changing the configuration of the feeder 14 or the suction nozzle exchange unit 81. [Explanation of symbols]

[0046] 10...component mounting line, 11...circuit board, 12...component mounter, 14...cassette-type feeder, 15...mounting head, 16...head moving device, 19...storage, 20...component mounter control device (operation monitoring device), 24...feeder setting unit, 26...automatic exchange device, 70...production management computer (management device), 71...stock unit, 76...unit transport device, 81...cassette-type suction nozzle exchange unit, 87...suction nozzle

Claims

1. a plurality of component mounters arranged along a transport path for transporting circuit boards, the component mounters mounting components onto the circuit boards; a storage cabinet arranged alongside the component mounters in an arrangement direction of the component mounters, for storing replacement units that can be replaced with the component mounters; a unit transporting device that automatically travels between a work location distant from the storage and the storage, loads the replacement unit, transports it to the storage, and returns to the work location with replaced units that have been collected from the plurality of component mounters to the storage; an automatic exchange device that moves in front of the storage, takes out a replacement unit from the storage, then moves in front of the component mounter that is to be automatically replaced, automatically replaces the unit that needs to be automatically replaced with the replacement unit, and collects it; A component mounting system comprising:

2. a plurality of component mounters arranged along a transport path for transporting circuit boards, the component mounters mounting components onto the circuit boards; a storage facility for storing replacement units that can be replaced with the plurality of component mounters; In a component mounting system provided with a plurality of component mounting lines, a unit transporting device that automatically travels between a common work location located away from the storage warehouses of the plurality of component mounting lines and the storage warehouse in order to perform maintenance and repair of the replaced units that have been collected in the storage warehouses of the plurality of component mounting lines, loads the replacement units, transports them to the storage warehouses of the plurality of component mounting lines, and returns to the work location with the replaced units that have been collected in the storage warehouses of the plurality of component mounting lines on board; an automatic exchange device that moves in front of the storage, takes out a replacement unit from the storage, then moves in front of the component mounter that is to be automatically replaced, automatically replaces the unit that needs to be automatically replaced with the replacement unit, and collects it; A component mounting system comprising:

Images