Substrate production device and fan control device

Abstract

This substrate production device comprises a work unit, a housing, a motor drive fan, a first power supply circuit, and a second power supply circuit. The work unit performs a substrate production action. The housing accommodates the work unit. The motor drive fan ventilates the inside of the housing. The first power supply circuit actuates during the operation of the device when the substrate production action is performed, and supplies power to the work unit and the motor drive fan. The second power supply actuates during the shutdown period of the device when the substrate production action is not performed, and supplies power to the motor drive fan.

Description

Substrate production equipment and fan control device

[0001] The technology disclosed in this specification relates to a board production apparatus and a fan control device.

[0002] A mounting line that mounts components on boards to produce circuit boards is composed of board production equipment such as component mounters. When the board production equipment operates various operational units to perform board production operations, the temperature inside the equipment rises due to the heat generated by the operational units. Therefore, while the equipment is operating, a fan is driven to cool the equipment to remove heat, and the fan is stopped when the power is turned off and board production operations are not being performed. Related prior art is known, for example, from Patent Document 1 (JP 2007-329195 A).

[0003] However, if a sudden change in outside temperature occurs while the power is off in a humid environment, or if a sudden change in the temperature inside the machine occurs when the power is turned on, the temperature difference between the outside air and the machine can cause condensation on the electrical equipment inside the machine, resulting in damage to the electrical equipment. For this reason, conventional measures have included temperature control using air conditioning in factories. However, these measures have the disadvantage of consuming a lot of power even when the machine is stopped, making them uneconomical.

[0004] Therefore, this specification provides a technique for preventing condensation while suppressing power consumption when the apparatus is stopped and not performing substrate production operations.

[0005] This specification discloses a board production apparatus. The board production apparatus includes an operating unit, a housing, a motor-driven fan, and a power supply circuit. The operating unit performs board production operations. The housing houses the operating unit. The motor-driven fan ventilates the housing. The power supply circuit operates when the apparatus is stopped and not performing board production operations, and supplies power to the motor-driven fan. Therefore, with the above-described configuration, condensation can be prevented when the apparatus is stopped and not performing board production operations.

[0006] This specification also discloses another board production apparatus. This board production apparatus includes an operating unit, a housing, a motor-driven fan, a power supply circuit, and a control unit. The operating unit performs board production operations. The housing houses the operating unit. The motor-driven fan ventilates the housing. The power supply circuit operates when the apparatus is operating to perform board production operations and when the apparatus is stopped and no board production operations are being performed. The power supply circuit supplies power to the operating unit and the motor-driven fan when the apparatus is operating, and supplies power to the motor-driven fan when the apparatus is stopped. The control unit controls the motor-driven fan to rotate at a relatively high speed when the apparatus is operating, and to rotate at a relatively low speed when the apparatus is stopped. Therefore, with the above-described configuration, it is possible to prevent condensation while reducing power consumption when the apparatus is stopped and no board production operations are being performed.

[0007] Fig. 1 is a schematic perspective view showing a component mounter (board production apparatus) of Example 1. Fig. 2 is a schematic view showing an upper part of the component mounter of Example 1. Fig. 3 is a schematic view showing a lower part of the component mounter of Example 1. Fig. 4 is a schematic view for explaining a ventilation device of Example 1. Fig. 5 is a schematic view for explaining a ventilation device of Example 2. Fig. 6 is a schematic view for explaining a ventilation device of another Example. Fig. 7 is a schematic view for explaining a ventilation device of yet another Example. Fig. 8 is a schematic view for explaining a ventilation device of yet another Example.

[0008] (First Embodiment) Hereinafter, a component mounter 10 according to a first embodiment will be described with reference to FIGS. 1 to 4. The component mounter 10 is an example of a board production device in the technology disclosed herein, and is a device that mounts components 2 on a board 4. The component mounter 10 is also called a surface mounter or chip mounter. Typically, the component mounter 10 is installed alongside a solder printer, a board inspection machine, or the like, to form a continuous mounting line. As shown in FIGS. 1 and 2, the component mounter 10 includes a base 10b and a component mounting module 10a installed on the base 10b.

[0009] Fig. 1 shows a state in which one component mounting module 10a is installed on a base 10b. A plurality of component mounting modules 10a can be installed on the base 10b. The plurality of component mounting modules 10a can be mounted side by side in the X direction on the base 10b and are configured to be detachable from the base 10b. As shown in Fig. 3, the base 10b is equipped with devices and components that are common to the plurality of component mounting modules 10a.

[0010] The component mounting module 10a includes a board transport unit 30, a component mounting unit 40, a component supply unit 50, an operation panel 70, a control system electrical component unit 60 that controls these devices 30, 40, 50, and 70, and a main body cover 11. The main body cover 11 serves as a housing for accommodating the work units that perform board production operations, and covers the board transport unit 30, the component mounting unit 40, and a portion of the component supply unit 50. The main body cover 11 is provided with an electrical component case 12 that has the control system electrical component unit 60. The electrical component case 12 is disposed below the board transport unit 30 and the component mounting unit 40. In the component mounting module 10a, the board transport unit 30, the component mounting unit 40, and the operation panel 70 are disposed in the upper portion, and the control system electrical component unit 60 is disposed in the lower portion. The component supply unit 50 is disposed across both the upper and lower portions of the component mounting module 10a. The interior of the main body cover 11 is divided into a first region R1 and a second region R2. The first region R1 is an area within the interior space of the main body cover 11 that is outside the electrical component case 12. The first region R1 accommodates the board transport unit 30, the component mounting unit 40, and a portion of the component supply unit 50. The second region R2 is an area inside the electrical component case 12 and is located below the first region R1. The second region R2 accommodates the control system electrical component unit 60.

[0011] The board transport unit 30 is a device that transports the board 4 into the component mounting unit 40, positions it in the component mounting unit 40, and transports it out of the component mounting unit 40. The board transport unit 30 includes, for example, a pair of belt conveyors 32, a support device (not shown) that is attached to the belt conveyor 32 and supports the board 4 from below, and a drive device 34 that drives the belt conveyor 32. The board 4 is positioned at a mounting position within the component mounter 10, and once the components 2 are attached at the mounting position, the board is transported from the mounting position to the outside of the component mounter 10. As described above, the mounting line that includes the component mounter 10 extends in the X direction. The pair of belt conveyors 32 extend along the X direction and transport the board 4 in the X direction.

[0012] The component supply unit 50 is a device that supplies components 2 to be mounted on the board 4. The component supply unit 50 includes a feeder holding section 54 and multiple component feeders 52. The multiple component feeders 52 are detachably attached to the feeder holding section 54. The component feeders 52 store multiple components 2. The component feeders 52 are detachably attached to the feeder holding section 54 and supply the components 2 to the component mounting unit 40. The specific configuration of the component feeders 52 is not particularly limited. Each component feeder 52 may be, for example, a tape-type feeder that stores multiple components 2 on a wound tape, a tray-type feeder that stores multiple components 2 on a tray, or a bulk-type feeder that stores multiple components 2 randomly in a container.

[0013] The component mounting unit 40, which is a work unit that performs board production operations, is a device (suction unit) that picks up components 2 supplied from the component supply unit 50 and mounts them on boards 4 carried in by the board transport unit 30. The component mounting unit 40 includes a moving device 42, a moving base 44, and a mounting head 46. The moving device 42 moves the mounting head 46 relative to the board 4 and is driven by the control system electrical equipment unit 60. The moving device 42 includes an XY robot mechanism that drives the moving base 44 in the X and Y directions. The moving device 42 is composed of guide rails that guide the moving base 44, a moving mechanism that moves the moving base 44 along the guide rails, a motor that drives the moving mechanism, and the like. The mounting head 46 is attached to the moving base 44 and moves above the space between the pair of belt conveyors 32 and the component feeder 52 by the moving device 42.

[0014] The mounting head 46 has a suction nozzle 48 that picks up the component 2. The suction nozzle 48 is detachably attached to the mounting head 46. The suction nozzle 48 is configured to be movable in the Z direction (up and down in the drawing) by an actuator (not shown) housed in the mounting head 46. As described above, the suction nozzle 48 can move in the Z direction. In addition, the suction nozzle 48 can also move in the X and Y directions (hereinafter referred to as the XY directions) by moving the moving base 44 in the X and Y directions. Therefore, by moving the suction nozzle 48 in various directions, the component 2 can be picked up by the suction nozzle 48, and the component 2 picked up by the suction nozzle 48 can be mounted on the board 4. Therefore, to mount the component 2 on the board 4 using the mounting head 46, the suction nozzle 48 is first positioned in the X and Y directions relative to the component 2 supplied from the component feeder 52, and the suction nozzle 48 is moved downward until the suction surface (lower surface) of the suction nozzle 48 abuts against the component 2. When the suction surface of the suction nozzle 48 comes into contact with the component 2, the component 2 is sucked onto the suction nozzle 48, and the suction nozzle 48 is moved upward. Next, the movement device 42 positions the component 2 sucked onto the suction nozzle 48 with respect to the board 4. At this time, the position and orientation of the component 2 in the X and Y directions are adjusted so that the component 2 is positioned at a predetermined position on the board 4. Next, the suction nozzle 48 is moved downward until the component 2 comes into contact with the board 4, thereby mounting the component 2 on the board 4.

[0015] The operation panel 70 is an input device that receives instructions from the worker, and also a display device that displays various information to the worker.

[0016] As shown in Figures 1 and 3, an electrical component case 12 is provided below the rear end of the main body cover 11, and the main body cover 11 is configured to be attachable to the base 10b. The electrical component case 12 is formed integrally with the main body cover 11. However, the electrical component case 12 may be provided as a separate component from the main body cover 11. The electrical component case 12 houses a control system electrical component unit 60. An opening is provided at the front end of the main body cover 11, and a parts supply unit 50 is disposed in the opening. However, in Figure 3, the main body cover 11 is shown without the parts supply unit 50.

[0017] The control system electrical equipment unit 60 is communicatively connected to the board transport unit 30, the component mounting unit 40, the component supply unit 50, and the operation panel 70. In this embodiment, the control system electrical equipment unit 60 is configured using a large number of heat-generating electrical components and includes a unit control device 62, a power distribution device 64, and a servo amplifier 66. The unit control device 62 is configured using a computer equipped with a CPU, ROM, and RAM. The unit control device 62 executes pre-installed programs to drive and control, for example, each of the devices 30, 40, 50, and 70. The servo amplifier 66 controls, for example, the rotation speed of the motors of the board transport unit 30 and the component mounting unit 40 based on control signals from the unit control device 62. Therefore, a relatively large current flows through the servo amplifier 66 compared to the electronic components provided in the control system electrical equipment unit 60. As a result, the temperature of the servo amplifier 66 is likely to rise. The power distribution device 64 distributes, for example, the power supplied to the component mounter 10 to each of the devices 30 , 40 , 50 , 62 , 64 , and 70 .

[0018] Next, we will explain the configuration of the ventilation device 20 in the component mounter 10 of this embodiment. As shown in Figure 4, the ventilation device 20 of this embodiment is provided inside the electrical component case 12 (i.e., the second region R2), and includes a motor-driven fan 82, a power supply circuit, and a fan control device 90 as a control unit.

[0019] The motor-driven fan 82 is a DC fan driven by direct current, and is a device for ventilating by creating an air flow inside the electrical component case 12. The motor-driven fan 82 is installed at the rear end of the electrical component case 12, and exhausts the air inside the electrical component case 12 from there to the outside of the component mounter 10 (see FIGS. 1 and 3).

[0020] The power supply circuit includes a DC power supply circuit 64c for driving the fans and a DC power supply circuit (not shown) for driving the operating units. These DC power supply circuits are installed within the power distribution device 64 and generate DC power at a predetermined voltage (e.g., 24 V DC). The DC power supply circuit 64c for driving the fans is electrically connected to the motor-driven fan 82 and is capable of supplying power to rotate the motor-driven fan 82. The DC power supply circuit for driving the operating units is electrically connected to various operating units (such as the board transport unit 30, the component mounting unit 40, and the component supply unit 50) and is capable of supplying power to these devices. Fans (not shown) are provided in multiple locations in the upper region of the main body cover 11, forming a ventilation unit (a type of the operating unit) that ventilates the first region R1. The DC power supply circuit for driving the operating units is also capable of supplying power to this ventilation unit.

[0021] The fan control device 90 includes a control circuit 91 and a speed controller 92. The control circuit 91 is installed in the power distribution device 64 and is electrically connected to the speed controller 92. The aforementioned DC power supply circuit 64c for driving the fan is also electrically connected to the speed controller 92. The control circuit 91 controls the operation of the speed controller 92. The speed controller 92 is, for example, a well-known inverter circuit, and is electrically connected to the motor-driven fan 82. The speed controller 92 controls the rotation speed of the motor-driven fan 82 under the control of the control circuit 91.

[0022] The control circuit 91 is electrically connected to an external power source via a fuse 83, which prevents overcurrent, and a switch 81, which serves as a main switch. The external power source refers to a commercial power source that supplies 100V or 200V AC. The switch 81 is installed in an exposed state on the front surface of the base 10b (see Figures 1 and 3). It is closed (ON) when the device is operating and performing board production operations, and is open (OFF) when the device is stopped and not performing board production operations. Note that the device being stopped and not performing board production operations does not include a state in which the switch 81 is ON but the operation unit is stopped waiting for boards, or a state in which the switch 81 is ON and energized but the operation unit is not operating. When the switch 81 is closed, the control circuit 91 operates by power supplied from the external power source. When the switch 81 is open, the control circuit 91 does not operate due to the loss of power supply from the external power source.

[0023] The DC power supply circuit for driving the operational units is also electrically connected to the external power supply via fuse 83 and switch 81. Therefore, when the device is operating and switch 81 is closed, the DC power supply circuit for driving the operational units operates using power supplied from the external power supply to generate DC power and supply that DC power to each operational unit. On the other hand, when the device is stopped and switch 81 is open, the DC power supply circuit for driving the operational units stops generating DC power because there is no power supplied from the external power supply.

[0024] The fan-driving DC power supply circuit 64c is electrically connected to an external power supply via another fuse 84 to prevent overcurrent, but is not electrically connected to the external power supply via the switch 81. Therefore, the DC power supply circuit 64c is directly connected to the external power supply, bypassing the switch 81, and is constantly supplied with power from the external power supply regardless of the open / closed state of the switch 81. In other words, the fan-driving DC power supply circuit 64c of this embodiment operates not only when the device is operating to perform board production operations, but also when the device is stopped and not performing board production operations. An indicator lamp 85 is connected to the power line connecting the DC power supply circuit 64c to the external power supply. Therefore, the indicator lamp 85 allows an operator to recognize that current is flowing through the power line connecting the DC power supply circuit 64c to the external power supply.

[0025] In other words, the power supply circuit of this embodiment operates when the device is operating and when the device is stopped, and supplies power to the working unit and motor-driven fan 82 when the device is operating, and when the device is stopped, supplies power to the motor-driven fan but does not supply power to the working unit.

[0026] When the device is in operation and the switch 81 is in the closed state, the control circuit 91 operates to issue a command to the speed controller 92 to rotate the motor-driven fan 82 at high speed. As a result, the speed controller 92 rotates the motor-driven fan 82 at high speed, and external air is drawn into the component mounter 10 from the front end of the main body cover 11, where an opening is provided. The drawn-in air then passes through the electrical equipment case 12 from the front to the rear and is exhausted to the outside from the rear end where the motor-driven fan 82 is located (see arrow A1 in FIG. 3 ). As a result of this high-volume ventilation, heat generated by the unit control device 62, power distribution device 64, and servo amplifier 66 is exhausted together with the air, cooling the interior of the electrical equipment case 12.

[0027] When the device is stopped and the switch 81 is in the open state, the control circuit 91 is deactivated, and a command to rotate the motor-driven fan 82 at high speed is no longer output to the speed controller 92. As a result, the speed controller 92 rotates the motor-driven fan 82 at a low speed. At this time, outside air is still drawn into the component mounter 10 from the front end of the main body cover 11, where an opening is provided, but the air flow is slower than when the device is operating. The drawn-in air then passes from the front to the rear through the electrical component case 12 and is exhausted to the outside from the rear end where the motor-driven fan 82 is located. As a result of this low-volume ventilation, moisture is exhausted from inside the electrical component case 12, preventing condensation on the unit control device 62, power distribution device 64, and servo amplifier 66.

[0028] As described above, in the component mounter 10, which is the board production apparatus of this embodiment, power is supplied to the motor-driven fan 82 even when the apparatus is stopped. The fan control device 90 controls the motor-driven fan 82 to rotate at a relatively high speed when the apparatus is operating, and to rotate at a relatively low speed when the apparatus is stopped. This makes it possible to reduce power consumption while the apparatus is stopped and not performing board production operations, while also preventing condensation in the unit control device 62, power distribution device 64, and servo amplifier 66.

[0029] That is, with the above-described configuration of the mounter 10, power is supplied to the motor-driven fan 82 from the DC power supply circuit 64c for fan drive, which is always in operation. Therefore, even when the mounter is stopped, the rotation of the motor-driven fan 82 ventilates the interior of the electrical equipment case 12 and expels moisture from the electrical equipment case 12. Therefore, even during periods when temperature control by air conditioning in a factory is not performed, condensation on the unit control device 62, power distribution device 64, and servo amplifier 66 can be prevented, preventing electrical equipment failure and rust within the mounter. Furthermore, when the mounter is stopped, power is not supplied to the suction unit 40, which is a working unit, and only a small amount of power is supplied to rotate the motor-driven fan 82 at a relatively low speed. Therefore, there is no need to take measures such as keeping the mounter powered on even during holidays, reducing power consumption and running costs. In addition to saving power by rotating the motor-driven fan 82 at a low speed, this embodiment also reduces dust intrusion into the machine and noise.

[0030] Second Embodiment Next, a mounter 10 according to a second embodiment will be described with reference to Fig. 5. Here, the differences from the first embodiment will be mainly described.

[0031] The component mounter 10 of this embodiment is equipped with a ventilation device 20A, but its configuration is different from that of the ventilation device 20 of the first embodiment. As shown in Fig. 5, the ventilation device 20A is provided inside the electrical component case 12 (i.e., the second region R2) and includes a motor-driven fan 82 and two types of DC power supply circuits 64a, 64b (i.e., the first power supply circuit 64a and the second power supply circuit 64b) for driving the fan. Note that the ventilation device 20A does not particularly include a fan control device 90 as a control unit. The first power supply circuit 64a and the second power supply circuit 64b are both installed inside the power distribution device 64.

[0032] The DC power supply circuit 64a for driving the operating units, which is the first power supply circuit, is electrically connected to the various operating units (such as the board transport unit 30, the component mounting unit 40, and the component supply unit 50) and is capable of supplying power to these devices. The DC power supply circuit 64a also serves as a DC power supply circuit for driving the fans. The DC power supply circuit 64a is electrically connected to the motor-driven fan 82 via a diode 86 and is capable of supplying power to rotate the motor-driven fan 82. The anode of the diode 86 is connected to the output side of the DC power supply circuit 64a, and the cathode of the diode 86 is connected to the motor-driven fan 82. The DC power supply circuit 64a is installed within the power distribution device 64 and generates DC power at a relatively high, predetermined voltage (e.g., 24 V DC).

[0033] The fan driving DC power supply circuit 64b, which is the second power supply circuit, is electrically connected to the motor-driven fan 82 via a diode 87 and is capable of supplying power to rotate the motor-driven fan 82. The anode of the diode 86 is connected to the output side of the DC power supply circuit 64b, and the cathode of the diode 87 is connected to the motor-driven fan 82. The DC power supply circuit 64b generates DC power at a relatively low predetermined voltage (e.g., DC 12 V).

[0034] The DC power supply circuit 64a is electrically connected to an external power source via a fuse 83 and a switch 81, which is a main switch. When the equipment is operating to perform board production operations, the switch 81 is closed, and the DC power supply 64a receives power from the external power source and generates 24 V DC power. When the equipment is stopped and not performing board production operations, the switch 81 is opened, and the DC power supply 64a stops operating due to the loss of power supply from the external power source. In other words, the DC power supply circuit 64a is not always operating, and can therefore be said to be a DC power supply that operates temporarily only when the equipment is operating.

[0035] The DC power supply circuit 64b is electrically connected to the external power supply via another fuse 84, but is not electrically connected to the external power supply via the switch 81. Therefore, the DC power supply circuit 64b is directly connected to the external power supply, bypassing the switch 81, and is constantly supplied with power from the external power supply regardless of the open / closed state of the switch 81. In other words, the DC power supply circuit 64b of this embodiment is a DC power supply circuit that operates not only when the apparatus is operating to perform board production operations, but also when the apparatus is stopped and not performing board production operations. Note that an indicator lamp 85 is connected to the power line connecting the DC power supply circuit 64b to the external power supply, as in the first embodiment.

[0036] When the device is in operation and the switch 81 is closed, both the DC power supply circuit 64a and the DC power supply circuit 64b are operating. At this time, the potential at the connection point between the cathodes of the diodes 86 and 87 is higher than 12 V. Therefore, current does not flow from the DC power supply circuit 64b, which has a relatively low output voltage, to the motor-driven fan 82, while current flows from the DC power supply circuit 64a, which has a relatively high output voltage, to the motor-driven fan 82. As a result, the motor-driven fan 82 rotates at high speed, providing ventilation. Therefore, heat generated by the unit control device 62, power distribution device 64, and servo amplifier 66 is exhausted with the air, cooling the interior of the electrical equipment case 12.

[0037] When the device is stopped and the switch 81 is in the open state, only the DC power supply circuit 64b is activated, and 12V DC power is supplied to the motor-driven fan 82. As a result, the motor-driven fan 82 rotates at a low speed, providing ventilation. This allows moisture to be expelled from the electrical component case 12, preventing condensation on the unit control device 62, power distribution device 64, and servo amplifier 66. Therefore, similar to the first embodiment, it is possible to prevent condensation while suppressing power consumption when the device is stopped and no board production operation is being performed. Furthermore, according to this embodiment, the number of components required for the ventilation device 20A is reduced compared to the configuration of the first embodiment, making it easier to reduce costs.

[0038] Although the above describes the embodiments, the specific configuration is not limited to the above. In the ventilation device 20A of the second embodiment, the first power supply circuit (a temporarily operated DC power supply circuit 64a) and the second power supply circuit (a constantly operated DC power supply circuit 64b) are electrically connected to a single common motor-driven fan 82. However, this configuration is not limited to the above. For example, in another embodiment of the ventilation device 20B shown in FIG. 6 , the first power supply circuit (a temporarily operated DC power supply circuit 64a) may be electrically connected to the motor-driven fan 82, and the second power supply circuit (a constantly operated DC power supply circuit 64b) may be electrically connected to a separate motor-driven fan 82a. In this configuration, when the device is operating to perform board production operations, the two motor-driven fans 82, 82a rotate by receiving power from the DC power supply circuits 64a, 64b, providing ventilation with a large airflow. On the other hand, when the device is stopped and not performing board production operations, the device receives power only from the DC power supply circuit 64b, providing ventilation with a small airflow by rotating only the single motor-driven fan 82a. Therefore, similarly to the first and second embodiments, it is possible to prevent condensation while suppressing power consumption when the apparatus is stopped and not performing substrate production operations.

[0039] In the first and second embodiments described above, the motor-driven fan 82 is configured to rotate at a high speed when the apparatus is operating and at a low speed when the apparatus is stopped, but the present invention is not limited to this configuration. For example, as shown in Fig. 7, a 12V DC power supply may be constantly supplied from the DC power supply circuit 64c to the motor-driven fan 82, so that the motor-driven fan 82 rotates at a low speed both when the apparatus is operating and when the apparatus is stopped. Alternatively, as shown in Fig. 8, the motor-driven fan 82 may be directly connected to an external power supply and constantly rotated by AC power supplied from the external power supply.

[0040] In the above-described embodiments, the motor-driven fans 82, 82a are installed at the rear end of the electrical component case 12, but this configuration is not limiting. For example, in other embodiments, the motor-driven fans 82, 82a may be installed at another position (such as the front end) of the electrical component case 12. Alternatively, the motor-driven fans 82, 82a may be installed at another position away from the electrical component case 12 (such as the rear end of the base 10b), and piping may be provided in the path from the motor-driven fans 82, 82a to the electrical component case 12.

[0041] In the above-described embodiments, the motor-driven fans 82, 82a are used as exhaust means by being installed on the exhaust side of the electrical component case 12, but this configuration is not limiting. For example, in other embodiments, the motor-driven fans 82, 82a may be used as intake means by being installed on the intake side of the electrical component case 12.

[0042] In the first embodiment described above, the control circuit 91 constituting the fan control device is provided in the power distribution device 64, but this configuration is not limited to this. For example, in other embodiments, the control circuit 91 may be provided in a location other than the power distribution device 64 in the electrical component case 12 (e.g., in the unit control device 62). Specifically, for example, a CPU constituting the unit control device 62 may function as the control circuit 91.

[0043] In the above embodiment, the board production device is a component mounter 10, and the working unit is a component mounting unit 40 (suction unit) that picks up components 2 and mounts them on the board 4, but the present invention is not limited to this configuration. For example, in another embodiment, the board production device may be a solder printing machine, and the working unit may be a squeegee unit that prints solder paste on the board 4.

[0044] In the above embodiments, the motor-driven fans 82, 82a continuously rotate when the device is stopped and no board production operations are being performed, by receiving power from the constantly-operated DC power supply circuits 64b, 64c. However, this configuration is not limited to this. For example, in other embodiments, the motor-driven fans 82, 82a may be configured to rotate intermittently as needed when the device is stopped and no board production operations are being performed. For example, the motor-driven fans 82, 82a may be driven during times of day when the temperature changes rapidly (e.g., from 5:00 to 10:00, from 15:00 to 20:00), and not driven during other times. This configuration can further reduce power consumption.

[0045] Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. The technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology exemplified in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives alone is technically useful.

[0046] 10: Component mounter as board production device 11: Main body cover as housing 40: Working unit (suction unit) 82: Motor-driven fan 62: Unit control device 64a: DC power supply as first power supply 64b: DC power supply as second power supply 64c: DC power supply constituting power supply 90: Control unit (fan control device) R1: First region R2: Second region

Claims

1. A board production device comprising: an operating unit that performs board production operations; a housing that houses the operating unit; a motor-driven fan that ventilates the interior of the housing; a first power supply circuit that operates when the device is operating to perform board production operations and supplies power to the operating unit and the motor-driven fan; and a second power supply circuit that operates when the device is stopped and not performing board production operations and supplies power to the motor-driven fan.

2. A board production device comprising: an operating unit that performs board production operations; a housing that houses the operating unit; a motor-driven fan that ventilates the interior of the housing; and a second power supply circuit that operates when the device is stopped and not performing board production operations, and supplies power to the motor-driven fan.

3. The board production apparatus according to claim 1 or 2, wherein the second power supply circuit is further activated when the apparatus is operating to perform a board production operation, and supplies power to the motor-driven fan.

4. The board production device described in claim 1, wherein the interior of the housing is divided into a first area that houses the working unit and a second area that is located below the first area and houses the first power supply circuit and the second power supply circuit, and the motor-driven fan is installed in the second area.

5. A board production device comprising: an operating unit that performs board production operations; a housing that houses the operating unit; a motor-driven fan that ventilates the inside of the housing; a power supply circuit that operates when the device is operating to perform board production operations and when the device is stopped and not performing board production operations, supplying power to the operating unit and the motor-driven fan when the device is operating, and supplying power to the motor-driven fan when the device is stopped; and a control unit that controls the motor-driven fan to rotate at a relatively high speed when the device is operating, and to rotate at a relatively low speed when the device is stopped.

6. The board production device described in claim 5, wherein the interior of the housing is divided into a first area that houses the working unit and a second area that is located below the first area and houses the power supply circuit and the control unit, and the motor-driven fan is installed in the second area.

7. The board production apparatus according to claim 4 or 6, wherein the second area further accommodates a unit control device for driving and controlling the working unit.

8. The board production device according to any one of claims 1, 2 and 5, wherein the board production device is a component mounter, and the working unit includes a suction unit that picks up components and mounts them on the board.

9. A fan control device that controls the motor-driven fan when ventilating the inside of the housing of a board production device by supplying power from a power supply circuit to an operating unit and a motor-driven fan when the device is operating to perform board production operations using the board production device, and supplying power from the power supply circuit to the motor-driven fan when the device is stopped and not performing board production operations, and that controls the motor-driven fan to rotate at a relatively high speed when the device is operating and at a relatively low speed when the device is stopped.

Images