Component Mounting System

Abstract

To detect clogging in a dust-proof filter of a component mounting machine.SOLUTION: A component mounting system includes: a control part; a component mounting machine; a magazine; a feeder storage warehouse; a suction fan that introduces air into the component mounting machine; a dust-proof filter provided at the suction fan; and a loader provided with a feeder transfer mechanism and a temperature sensor. The loader can move between a first position where the feeder transfer mechanism can access to the magazine and a second position on the outer side of the first position. The control part executes: processing for detecting a first temperature detected by the temperature sensor in a state where the loader is arranged at the first position; processing for detecting a second temperature detected by the temperature sensor in a state where the loader is arranged at the second position; and processing for notifying an abnormality of the dust-proof filter to a user when a temperature difference obtained by subtracting the second temperature from the first temperature is higher than a first reference value.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a component mounting system. [Background technology]

[0002] Patent Document 1 discloses a component mounter. Generally, this type of component mounter has an intake fan that introduces air into the component mounter. The intake fan introduces air into the component mounter, thereby suppressing a rise in temperature inside the component mounter. In many cases, the intake fan is also provided with a dust filter. The dust filter prevents dust and other particles from entering the component mounter. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication WO2017 / 033268A1 Summary of the Invention [Problem to be solved by the invention]

[0004] Dust and dirt accumulate on the dust filter, causing it to become clogged. When the dust filter becomes clogged, maintenance such as cleaning or replacing the dust filter becomes necessary. Dust filter maintenance is usually performed at a fixed frequency. However, the rate at which dust and dirt accumulate on the dust filter varies depending on factors such as the operating environment of the component mounter. This specification proposes a technology that can perform maintenance on the dust filter at an appropriate time by detecting clogging of the dust filter. [Means for solving the problem]

[0005] The component mounting system disclosed in this specification includes a control unit, a component mounter, a magazine disposed in the component mounter and having multiple feeder slots, a feeder storage cabinet having multiple feeder storage units, an intake fan that introduces air into the component mounter, a dust filter provided in the intake fan, a loader including a feeder transport mechanism that transports feeders between the multiple feeder slots and the multiple feeder storage units, and a temperature sensor. The component mounter mounts components supplied from the feeders stored in the magazine onto a circuit board. The loader is movable between a first position where the feeder transport mechanism can access the magazine and a second position outside the first position. The control unit executes a process of detecting a first temperature detected by the temperature sensor when the loader is disposed at the first position, a process of detecting a second temperature detected by the temperature sensor when the loader is disposed at the second position, and a process of notifying a user of an abnormality in the dust filter if a temperature difference obtained by subtracting the second temperature from the first temperature is higher than a first reference value.

[0006] It should be noted that "the feeder transport mechanism can access the magazine" means that the feeder transport mechanism can transport the feeder into or out of the magazine.

[0007] Furthermore, either the process for detecting the first temperature or the process for detecting the second temperature may be executed first.

[0008] When the dust filter becomes clogged, the flow rate of air introduced into the mounter by the intake fan decreases, increasing the temperature difference between the inside and outside of the mounter. The component mounting system disclosed in this specification detects clogging of the dust filter based on the temperature difference between the inside and outside of the mounter. Specifically, in this component mounting system, the management unit detects a first temperature using the loader's temperature sensor when the loader is located at a first position. When the loader is located at the first position, the feeder transport mechanism can access the magazine, so the loader's temperature sensor detects a temperature that correlates with the temperature inside the mounter. In other words, the first temperature is a temperature that correlates with the temperature inside the mounter. Furthermore, the management unit detects a second temperature using the loader's temperature sensor when the loader is located at a second position. When the loader is located at the second position, the loader's temperature sensor detects the temperature outside the mounter. In other words, the second temperature is the temperature outside the mounter. Therefore, the temperature difference obtained by subtracting the second temperature from the first temperature correlates with the temperature difference between the inside and outside of the mounter. If the temperature difference obtained by subtracting the second temperature from the first temperature is high, the dust filter is clogged. If the temperature difference is higher than the first reference value, the management unit notifies the user of an abnormality in the dust filter. This allows the user to perform maintenance on the dust filter at an appropriate time. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a component mounting system. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 2 is a cross-sectional view of the loader and the component mounter when the loader is positioned in front of the component mounter. [Figure 6] FIG. 10 is a cross-sectional view of the loader and feeder storage 30a when the loader is positioned in front of the feeder storage 30a. DETAILED DESCRIPTION OF THE INVENTION

[0010] The main features of the embodiments described below are listed below. Note that the technical elements described below are independent technical elements that exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

[0011] In one embodiment of the present technology, the component mounter includes a mounting head that picks up the components supplied from the feeder housed in the magazine, and a movement mechanism that moves the mounting head, and when the temperature difference is higher than a second reference value, the control unit may reduce the movement speed of the mounting head caused by the movement mechanism compared to when the temperature difference is lower than the second reference value.

[0012] With this configuration, when the temperature inside the mounter is high, the control unit reduces the speed at which the movement mechanism moves the mounting head, thereby suppressing heat generation in the movement mechanism and preventing the temperature of the movement mechanism from becoming excessively high.

[0013] In one embodiment of the present technology, the control unit may reduce the rotation speed of the intake fan when the temperature difference is lower than a third reference value, more than when the temperature difference is higher than the third reference value.

[0014] Note that reducing the rotation speed of the intake fan also includes setting the rotation speed of the intake fan to zero (that is, stopping the intake fan).

[0015] According to this configuration, the rotation speed of the intake fan decreases when the temperature inside the component mounter is low, so deterioration due to wear and tear on the intake fan can be suppressed.

[0016] In one embodiment of the present technology, the component mounter may further include an exhaust fan that exhausts air from inside the component mounter to the outside.

[0017] FIG. 1 shows an outline of the configuration of a component mounting system 10 according to an embodiment. The component mounting system 10 includes a printer 12, a print inspection machine 14, and multiple component mounters 20. The printer 12, the print inspection machine 14, and the multiple component mounters 20 are arranged in a line. The printer 12, the print inspection machine 14, and the multiple component mounters 20 are connected by a circuit board transport path 16. The circuit board transport path 16 includes a conveyor 16a and transports circuit boards from the printer 12 to the component mounters 20. The printer 12 prints solder on the circuit board. The circuit board on which the solder has been printed by the printer 12 is transported by the circuit board transport path 16 to the print inspection machine 14. The print inspection machine 14 inspects the condition of the solder printed on the circuit board. The circuit board inspected by the print inspection machine 14 is transported by the circuit board transport path 16 to the multiple component mounters 20. Each component mounter 20 mounts a component on the circuit board. The circuit boards on which components have been mounted by each component mounter 20 are transported to a reflow furnace (not shown) by the circuit board transport path 16. When the circuit board is heated in the reflow furnace, the solder hardens and the components are fixed to the circuit board. In the following, the direction in which the circuit board transport path 16 transports the circuit board may be referred to as the x-direction, the direction from the front to the back in FIG. 1 may be referred to as the y-direction, and the upward direction may be referred to as the z-direction.

[0018] The component mounting system 10 has a control unit 80. The control unit 80 is configured with a CPU, memory, etc., and controls each unit of the component mounting system 10. The control unit 80 also has a monitor.

[0019] The component mounting system 10 has a plurality of feeder storage cabinets 30 and a plurality of magazines 40. The feeder storage cabinets 30 and the magazines 40 store a plurality of feeders 60. As shown in FIGS. 1 and 2, the magazines 40 are disposed adjacent to the circuit board transport path 16. The magazines 40 are disposed on the front side of the circuit board transport path 16 in the y direction. A feeder storage cabinet 30 is disposed below each magazine 40. As shown in FIG. 2, the circuit board transport path 16 (i.e., the conveyor 16a), the magazines 40, and the feeder storage cabinets 30 below the magazines 40 are disposed within a case 21 of the component mounter 20. An opening 21a is provided in the front of the case 21 of the component mounter 20. The magazines 40 and the feeder storage cabinets 30 are disposed in positions that allow the feeders 60 to be inserted and removed through the opening 21a. In addition, as shown in FIG. 1, a feeder storage cabinet 30 is also provided between the print inspection machine 14 and the component mounter 20 located most upstream. Hereinafter, the feeder storage 30 between the print inspection machine 14 and the component mounter 20 may be referred to as the feeder storage 30a. As will be described in detail later, in the mounting process (i.e., the process of mounting components onto a circuit board), components supplied from each feeder 60 contained in the magazine 40 are mounted onto the circuit board. The feeder storage 30 is a storage that stores feeders 60 that are not used in the mounting process.

[0020] As shown in FIG. 2, each feeder storage cabinet 30 and each magazine 40 has a feeder table 42. The feeder table 42 is an L-shaped table in a side view and has a floor 42a and a wall 42b. The wall 42b extends upward from the end face of the floor 42a in the y direction. A plurality of slot grooves 44 are provided on the upper surface of the floor 42a. Each slot groove 44 extends in the y direction. The plurality of slot grooves 44 are arranged in the x direction. A plurality of connectors 45 are provided on the front surface of the wall 42b. Each connector 45 is arranged within a range obtained by extending the corresponding slot groove 44 in the y direction. The plurality of connectors 45 are arranged in the x direction. The feeder table 42 can accommodate a plurality of feeders 60.

[0021] FIG. 3 shows a feeder 60. The feeder 60 is a device that supplies components to the component mounter 20. The feeder 60 has a card-shaped case 61. Rails 61a are provided at the bottom end of the case 61. The rails 61a are shaped so that they can be inserted into the slot grooves 44 of the feeder table 42 shown in FIG. 2. When the rails 61a of the feeder 60 are inserted into the slot grooves 44 of the feeder table 42, the feeder 60 is accommodated in the feeder table 42 as shown in FIG. 2. The feeder 60 can be accommodated in either the feeder table 42 of the feeder storage 30 or the feeder table 42 of the magazine 40. Hereinafter, the space in the feeder table 42 that accommodates each feeder 60 is referred to as a slot 43. As shown in FIG. 3, a connector 65 is provided on the back of the case 61 of the feeder 60. When the feeder 60 is inserted into the slot 43, the connector 65 of the feeder 60 connects to the connector 45 of the feeder table 42.

[0022] As shown in FIG. 3 , feeder 60 has tape reel 62, tape feeding mechanism 64, and control unit 66. Tape reel 62, tape feeding mechanism 64, and control unit 66 are provided in case 61. When connector 65 of feeder 60 is connected to connector 45 of feeder table 42, power is supplied to tape feeding mechanism 64 and control unit 66. When connector 65 of feeder 60 is connected to connector 45 of feeder table 42, control unit 66 can communicate with control unit 80. Tape reel 62 is a reel around which component supply tape 62a is wound. Component supply tape 62a stores multiple components. Tape feeding mechanism 64 has a motor (not shown). Tape feeding mechanism 64 pulls out component supply tape 62a from tape reel 62 and sets the components stored in component supply tape 62a at component supply positions 62b provided on the top surface of case 61. The control unit 66 is configured with a CPU, memory, etc., and controls the tape feeding mechanism 64 in response to commands from the control unit 80 .

[0023] As shown in FIG. 1, x-axis rails 18 extending parallel to the x-direction are provided on the front surfaces of the feeder storage 30 and the magazine 40. Note that the x-axis rails 18 are not shown in FIG. 2. Also, as shown in FIG. 1, the component mounting system 10 has a loader 50. The loader 50 moves along the x-axis rails 18. FIG. 4 shows the internal structure of the loader 50. The loader 50 has an x-axis slider 52. The x-axis slider 52 has an x-axis motor 52a and a guide roller 52b. The guide roller 52b guides the movement of the loader 50 along the x-axis rail 18. When the x-axis motor 52a is driven, the loader 50 moves along the x-axis rail 18.

[0024] As shown in FIGS. 4 and 5, the loader 50 has a case 51. As shown in FIG. 5, the case 51 has an opening 51a on the rear side (i.e., the side facing the component mounter 20). The loader 50 has an upper transfer area 50A and a lower transfer area 50B within the case 51. The upper transfer area 50A is an area located at the same height as the magazine 40, and the lower transfer area 50B is an area located at the same height as the feeder storage 30 below the magazine 40. The loader 50 also has a feeder transport mechanism 53 that transports the feeder 60. As shown in FIG. 4, the feeder transport mechanism 53 has a clamp unit 54, a y-axis slider 56, and a z-axis slider 58. The clamp unit 54 clamps the feeder 60. The y-axis slider 56 has a y-axis motor 56a and a y-axis guide rail 56b. The y-axis guide rail 56b extends parallel to the y-axis. As indicated by arrow 200, the y-axis motor 56a moves the clamp unit 54 along the y-axis guide rail 56b. The z-axis slider 58 has a z-axis motor 58a and a z-axis guide rail 58b. The z-axis guide rail 58b extends parallel to the z-axis. As indicated by arrow 202, the z-axis motor 58a moves the clamp unit 54 and the y-axis slider 56 along the z-axis guide rail 58b. The z-axis slider 58 moves the clamp unit 54 and the y-axis slider 56 between the upper transfer area 50A and the lower transfer area 50B. The loader 50 also has a control unit (not shown). The control unit of the loader 50 is composed of a CPU, memory, etc., and controls each unit of the loader 50 in response to commands from the control unit 80.

[0025] 4 and 5, the loader 50 also has a temperature sensor 59. The temperature sensor 59 is disposed inside the case 51. The temperature sensor 59 is disposed near the opening 51a.

[0026] As described above, the loader 50 moves along the x-axis rail 18. As shown in FIG. 5, when the loader 50 moves in front of one of the mounters 20, the opening 51a of the loader 50 is positioned in front of the opening 21a of the mounter 20. In this state, the feeder transport mechanism 53 of the loader 50 can access the magazine 40 and the feeder storage 30 through the openings 51a and 21a. Also, as shown in FIG. 6, when the loader 50 moves in front of the feeder storage 30a, the opening 51a of the loader 50 is positioned in front of the feeder storage 30a. In this state, the feeder transport mechanism 53 of the loader 50 can access the feeder storage 30a through the opening 51a.

[0027] The loader 50 moves the feeder 60 between the feeder storage 30 and the magazine 40. For example, when moving the feeder 60 from the feeder storage 30 to the magazine 40, the loader 50 moves along the x-axis rail 18 to the front of the feeder storage 30 as shown in FIG. 5 or 6. Next, the loader 50 operates the z-axis slider 58 and the y-axis slider 56 to move the clamp unit 54 to the position of the target feeder 60, and clamps the target feeder 60 with the clamp unit 54. Next, the loader 50 operates the y-axis slider 56 to move the feeder 60 together with the clamp unit 54 toward the front in the y direction. This removes the feeder 60 from the slot 43 of the feeder storage 30. Next, the loader 50 operates the x-axis slider 52 to move to the front of the magazine 40 as shown in FIG. 5. Next, the loader 50 operates the z-axis slider 58 to move the feeder 60 to the front of the target slot 43 in the magazine 40. Next, the loader 50 uses the y-axis slider 56 to move the feeder 60 rearward in the y direction. This causes the feeder 60 to be inserted into the target slot 43. At this time, the connector 65 (see FIG. 3) of the feeder 60 connects with the connector 45 (see FIG. 2) of the feeder table 42. Note that when moving the feeder 60 from the magazine 40 to the feeder storage 30, the loader 50 transports the feeder 60 in a similar manner.

[0028] As described above, the mounter 20 has a case 21. As described above, the conveyor 16a, the magazine 40, and the feeder storage 30 are arranged inside the case 21. As shown in FIGS. 2 and 5, the mounter 20 also has a mounting head 22, a head moving mechanism 24, and a control unit (not shown). The control unit of the mounter 20 is composed of a CPU, memory, etc., and controls the conveyor 16a, the mounting head 22, and the head moving mechanism 24 in response to commands from the control unit 80. Each conveyor 16a constitutes a circuit board transport path 16 and transports circuit boards in the x direction. The head moving mechanism 24 moves the mounting head 22 above the conveyor 16a and the magazine 40. The head moving mechanism 24 has a z-axis slider 24z, an x-axis slider 24x, and a y-axis slider 24y. The z-axis slider 24z has a built-in actuator and moves the mounting head 22 along the z direction. The x-axis slider 24x is configured by a linear motor and moves the mounting head 22 and the z-axis slider 24z parallel to the x direction. The y-axis slider 24y is configured by a linear motor and moves the mounting head 22, the z-axis slider 24z, and the x-axis slider 24x parallel to the y direction. In this way, the head movement mechanism 24 can move the mounting head 22 along the x direction, y direction, and z direction. The mounting head 22 picks up components supplied from the feeder 60 in the magazine 40 and mounts them on the circuit board on the conveyor 16a. More specifically, the feeder 60 housed in the magazine 40 sets the components at the component supply position 62b (see FIG. 5). The head movement mechanism 24 moves the mounting head 22 so that the bottom surface of the mounting head 22 comes into contact with the component set at the component supply position 62b. The mounting head 22 picks up the component set at the component supply position 62b. Once the mounting head 22 has picked up the component, the head movement mechanism 24 moves the mounting head 22 so that the component picked up by the mounting head 22 comes into contact with the mounting position on the circuit board on the conveyor 16a. Next, the mounting head 22 releases the component from suction. This causes the component to be mounted on the circuit board at the mounting position. In this way, the mounting head 22 mounts the components supplied by each feeder 60 contained in the magazine 40 at the appropriate mounting position on the circuit board.The circuit board on which the components have been mounted by the component mounter 20 is transported along the circuit board transport path 16 to a reflow furnace (not shown).

[0029] 5, the component mounter 20 has an intake fan 26, a dust filter 27, and exhaust fans 28 and 29. The intake fan 26 is provided on the rear panel of the case 21. The intake fan 26 introduces air from the outside of the case 21 into the inside of the case 21 (i.e., the inside of the component mounter 20). The dust filter 27 is attached to the intake fan 26. The dust filter 27 removes dust and dirt from the air introduced into the component mounter 20 by the intake fan 26. The exhaust fan 28 is provided on the top panel of the case 21. The exhaust fan 29 is provided on the floor panel of the case 21. The exhaust fans 28 and 29 exhaust air from the inside of the case 21 (i.e., the inside of the component mounter 20) to the outside of the case 21.

[0030] Next, the processing executed by the control unit 80 will be described. The control unit 80 stores a circuit board production program. The circuit board production program is a program that determines which components are to be mounted at which positions on the circuit board. The control unit 80 communicates with the control units of the component mounters 20 and the loader 50 and sends commands to these control units. The control units of the component mounters 20 and the loader 50 control the component mounters 20 and the loader 50 according to the commands from the control unit 80. The control unit 80 is also connected to the magazine 40 and each feeder 60 housed in the feeder storage 30 via connectors 45 and 65. The control unit 80 communicates with the control unit 66 of each feeder 60 via the connectors 45 and 65, thereby controlling each feeder 60.

[0031] Before starting the mounting process, the control unit 80 executes a feeder setting process. In the feeder setting process, the control unit 80 uses the loader 50 to transport each feeder 60 to the appropriate slot 43. More specifically, the control unit 80 stores information about which slot 43 each feeder 60 of the component mounting system 10 is currently housed in. The control unit 80 also stores the type of component contained in each feeder 60. The control unit 80 identifies the feeder 60 that contains the component to be mounted on the circuit board based on the production program. The control unit 80 then controls the loader 50 to transport each feeder 60 so that the feeder 60 containing the component to be mounted is housed in the slot 43 of the magazine 40 and the feeder 60 not containing the component to be mounted is housed in the slot 43 of the feeder storage 30. Once all feeders 60 have been housed in the appropriate slots 43, the control unit 80 executes the mounting process.

[0032] In the mounting process, the control unit 80 controls each feeder 60 housed in the magazine 40 to cause each feeder 60 to set components at the component supply position 62b. The control unit 80 also controls each component mounter 20 to mount each component set at the component supply position 62b onto a circuit board on the conveyor 16a. The circuit board on which all necessary components have been mounted by each component mounter 20 is sent to the reflow oven by the conveyor 16a. The solder hardens in the reflow oven, completing the circuit board with components connected.

[0033] During the mounting process, heat is generated in the head moving mechanism 24. In particular, a large amount of heat is generated in the linear motor of the y-axis slider 24y of the head moving mechanism 24. The control unit 80 operates the intake fan 26 and the exhaust fans 28, 29 while the component mounter 20 is in operation. When the intake fan 26 and the exhaust fans 28, 29 are operated, air flows from the intake fan 26 toward the exhaust fans 28, 29 inside the case 21. This allows the heat generated inside the case 21 to be expelled to the outside of the case 21 together with the air. As a result, a rise in temperature inside the case 21 is suppressed.

[0034] As described above, the dust filter 27 removes dust and other particles from the air introduced into the component mounter 20 by the intake fan 26. Therefore, as the component mounter 20 is used, dust and other particles gradually accumulate on the dust filter 27. If an excessive amount of dust and other particles accumulates on the dust filter 27, the dust filter 27 becomes clogged. If the dust filter 27 becomes clogged, the airflow resistance of the dust filter 27 increases, and the flow rate of air introduced into the component mounter 20 by the intake fan 26 decreases. If the flow rate of air introduced into the component mounter 20 decreases, the temperature inside the component mounter 20 increases, placing a strain on the electrical components that make up the component mounter 20. For this reason, the control unit 80 performs an inspection process for the dust filter 27 during the mounting process to detect clogging of the dust filter 27.

[0035] During the inspection process, the control unit 80 moves the loader 50 to the location in front of the mounter 20 to be inspected. During the mounting process, the loader 50 does not need to transport the feeder 60, so the loader 50 can be moved for the inspection process. When the loader 50 is moved to the location in front of the mounter 20 to be inspected, the opening 51a of the loader 50 is positioned in front of the opening 21a of the mounter 20 to be inspected, as shown in FIG. 5 . In this state, some of the air inside the case 21 of the mounter 20 flows into the case 51 of the loader 50 through the openings 21a and 51a. Therefore, the temperature sensor 59 detects the temperature of the air flowing from the mounter 20 into the loader 50. During the mounting process, the head movement mechanism 24 of the mounter 20 generates heat, so the temperature detected by the temperature sensor 59 gradually increases in the state shown in FIG. 5 . Once the temperature detected by the temperature sensor 59 stabilizes, the control unit 80 stores the detected temperature as a first temperature t1. Therefore, the first temperature t1 is a temperature that has a correlation with the temperature inside the component mounter 20.

[0036] Next, the control unit 80 moves the loader 50 to the front of the feeder storage 30a. As a result, the opening 51a of the loader 50 is positioned in front of the feeder storage 30a, as shown in FIG. 6. In this state, air outside the component mounter 20 flows into the case 51 of the loader 50 through the opening 51a. As a result, the temperature of the air outside the component mounter 20 is detected by the temperature sensor 59. Because the temperature of the air outside the component mounter 20 is lower than the temperature of the air inside the component mounter 20, the temperature detected by the temperature sensor 59 gradually decreases in the state shown in FIG. 6. When the temperature detected by the temperature sensor 59 stabilizes, the control unit 80 stores the detected temperature as the second temperature t2.

[0037] Next, the control unit 80 calculates the temperature difference Δt by subtracting the second temperature t2 from the first temperature t1. As described above, the first temperature t1 is a temperature that correlates with the temperature inside the component mounter 20, and the second temperature t2 is the temperature of the external air. Therefore, the temperature difference Δt correlates with the temperature difference between the air inside the component mounter 20 and the air outside the component mounter 20.

[0038] Next, the control unit 80 determines whether the temperature difference Δt is equal to or greater than the first reference value. As described above, when the dust filter 27 becomes clogged, the flow rate of air introduced into the component mounter 20 by the intake fan 26 decreases. As a result, the heat dissipation performance of the component mounter 20 decreases, and the temperature difference between the air inside the component mounter 20 and the air outside the component mounter 20 increases. Therefore, by determining whether the temperature difference Δt is equal to or greater than the first reference value, it is possible to determine whether the dust filter 27 is clogged. If the temperature difference Δt is equal to or greater than the first reference value, the control unit 80 displays on the monitor of the control unit 80 that an abnormality has occurred in the dust filter 27. Furthermore, if the temperature difference Δt is less than the first reference value, the control unit 80 does not display such a message. Therefore, the user can perform maintenance, such as cleaning or replacing the dust filter 27, based on the display on the monitor.

[0039] The control unit 80 also determines whether the temperature difference Δt is equal to or greater than a second reference value. The second reference value may be the same as or different from the first reference value. When the temperature difference Δt is equal to or greater than the second reference value, the control unit 80 reduces the speed at which the y-axis slider 24y of the head movement mechanism 24 moves the mounting head 22 (i.e., the operating speed of the linear motor constituting the y-axis slider 24y) compared to when the temperature difference Δt is less than the second reference value. In this way, when the internal temperature of the component mounter 20 is high, excessive temperature rise of the y-axis slider 24y, which is a heat source, can be suppressed by reducing the operating speed. This suppresses deterioration of the y-axis slider 24y. Furthermore, suppressing the temperature rise of the y-axis slider 24y suppresses the temperature rise inside the component mounter 20. Therefore, deterioration of the electrical components inside the component mounter 20 can be suppressed. If the temperature difference Δt is equal to or greater than a second reference value, the operating speed of the x-axis slider 24x may be reduced.

[0040] The control unit 80 also determines whether the temperature difference Δt is equal to or greater than a third reference value. The third reference value is a temperature lower than the first reference value and the second reference value. When the temperature difference Δt is less than the third reference value, the control unit 80 reduces the rotation speed of the intake fan 26 compared to when the temperature difference Δt is equal to or greater than the third reference value. For example, when the temperature difference Δt is equal to or greater than the third reference value, the control unit 80 may rotate the intake fan 26 at a rotation speed W1, and when the temperature difference Δt is less than the third reference value, the control unit 80 may rotate the intake fan 26 at a rotation speed W2 lower than the rotation speed W1. Alternatively, for example, when the temperature difference Δt is equal to or greater than the third reference value, the intake fan 26 may be rotated, and when the temperature difference Δt is less than the third reference value, the intake fan 26 may be stopped (i.e., the rotation speed may be reduced to zero). When the temperature difference Δt is less than the third reference value, the temperature inside the component mounter 20 is not so high, so there is no problem in stopping the intake fan 26. Furthermore, by stopping the intake fan 26 when the temperature difference Δt is less than the third reference value, deterioration of the intake fan 26 due to wear and tear can be suppressed.

[0041] The exhaust fans 28, 29 may be controlled in the same manner as the intake fan 26. That is, when the temperature difference Δt is less than the third reference value, the rotation speed of the exhaust fans 28, 29 may be reduced compared to when the temperature difference Δt is equal to or greater than the third reference value. This configuration makes it possible to suppress deterioration of the exhaust fans 28, 29 due to wear and tear, etc.

[0042] In the above-described embodiment, the second temperature t2 is measured after the first temperature t1 is measured, but the first temperature t1 may be measured after the second temperature t2 is measured.

[0043] In the above-described embodiment, the user is notified of an abnormality in the anti-dust filter 27 by a display on the monitor, but the user may also be notified of an abnormality in the anti-dust filter 27 by a warning lamp, a sound, or the like.

[0044] The slot 43 of the feeder storage 30 in the above-described embodiment is an example of a feeder accommodating section. The slot 43 of the magazine 40 in the above-described embodiment is an example of a feeder slot. The stopping position of the loader 50 in FIG. 5 in the above-described embodiment is an example of a first position. The stopping position of the loader 50 in FIG. 6 in the above-described embodiment is an example of a second position.

[0045] The technical elements described in this specification or drawings exhibit technical utility either alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technologies illustrated in this specification or drawings simultaneously achieve multiple objectives, and achieving one of those objectives is itself technically useful. [Explanation of symbols]

[0046] 10: Component mounting system 16: Circuit board transport path 16a: Conveyor 20: Component mounting machine 21: Case 21a: Opening 22: Mounting head 24: Head movement mechanism 26: Intake fan 27: Dust filter 28: Exhaust fan 29: Exhaust fan 30: Feeder storage 40: Magazine 50: Loader 51: Case 51a: Opening 53: Feeder transport mechanism 59: Temperature sensor 60: Feeder

Claims

1. A component mounting system, A control unit (80); A component mounter (20), a magazine (40) disposed in the component mounter (20) and having a plurality of feeder slots (43); a feeder storage (30) having a plurality of feeder storage sections (43); an intake fan (26) that introduces air into the component mounter (20); a dust filter (27) provided on the intake fan (26); a loader (50) including a feeder transport mechanism (53) that transports feeders (60) between the plurality of feeder slots (43) and the plurality of feeder accommodating sections (43), and a temperature sensor (59); and The component mounter (20) mounts components supplied from the feeder (60) stored in the magazine (40) onto a circuit board, the loader (50) is movable between a first position where the feeder transport mechanism (53) can access the magazine (40) and a second position outside the first position; The control unit (80) detecting a first temperature detected by the temperature sensor (59) when the loader (50) is disposed at the first position; detecting a second temperature detected by the temperature sensor (59) when the loader (50) is disposed at the second position; a process of notifying a user of an abnormality in the dust filter (27) when a temperature difference obtained by subtracting the second temperature from the first temperature is higher than a first reference value; A component mounting system that performs the above.

2. The component mounter (20) a mounting head (22) that picks up the components supplied from the feeder (60) contained in the magazine (40); a moving mechanism (24) for moving the mounting head (22); and When the temperature difference is higher than a second reference value, the control unit (80) reduces the moving speed of the mounting head (22) by the moving mechanism (24) compared to when the temperature difference is lower than the second reference value. The component mounting system according to claim 1 .

3. 3. The component mounting system of claim 1, wherein the control unit (80) reduces the rotation speed of the intake fan (26) when the temperature difference is lower than a third reference value compared to when the temperature difference is higher than the third reference value.

4. 4. The component mounting system according to claim 1, further comprising exhaust fans (28, 29) that exhaust air from inside the component mounter (20) to the outside.

Images