Component mounting device and component mounting method

Abstract

To provide a component mounting device and a component mounting method capable of outputting detection of deterioration of a vacuum pump.SOLUTION: A component mounting device uses a suction nozzle to pick up components and mount them on a board. The component mounting device includes a vacuum pump that draws vacuum from the suction nozzle, a vacuum suction path connecting the vacuum pump and the suction nozzle, a pressure sensor that measures the air pressure in an air flow path including the vacuum suction path, and a vacuum pump status detection unit that detects the status of the vacuum pump on the basis of the pressure value measured by the pressure sensor. The vacuum pump status detection unit sets an initial value of the air pressure (initial value), and outputs detection of deterioration of the vacuum pump when the pressure value measured by the pressure sensor is greater than or equal to the initial value a predetermined number of times in succession.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a component mounting apparatus and a component mounting method. [Background technology]

[0002] Patent Document 1 describes an electronic component mounting device in which a vacuum sensor is installed in a vacuum suction circuit between a vacuum valve and a vacuum pump. The vacuum measurement results of this vacuum sensor are compared with vacuum data stored in a memory unit to determine the vacuum suction status, such as the presence or absence of an electronic component at the bottom end of the suction nozzle and the mounting status of the suction nozzle in the mounting unit of each unit transfer head. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-204197 Summary of the Invention [Problem to be solved by the invention]

[0004] However, while conventional technologies including Patent Document 1 can measure the degree of vacuum in the suction nozzle, they cannot measure the vacuum pressure of the vacuum pump. Vacuum pumps are components with a limited lifespan. When used for a long period of time, wear and tear on the internal components can cause a decrease in functionality (for example, a decrease in the ultimate vacuum pressure or an increase in vacuum pressure). As a result, the vacuum pump needs to be repaired or replaced, so there is a need for a configuration that can predict vacuum pump failures in advance and notify the user.

[0005] The present disclosure has been devised in view of the above-described conventional circumstances, and aims to provide a component mounting device and a component mounting method that can output a detection of deterioration of a vacuum pump. [Means for solving the problem]

[0006] The component mounting device of the present disclosure is a component mounting device that uses a suction nozzle to suction components and mount them on a board, and is equipped with a vacuum pump that draws vacuum from the suction nozzle, a vacuum suction path connecting the vacuum pump and the suction nozzle, a pressure sensor that measures the air pressure in an air flow path including the vacuum suction path, and a vacuum pump status detection unit that detects the status of the vacuum pump based on the pressure value measured by the pressure sensor, wherein the vacuum pump status detection unit sets an initial value for the air pressure, and when the pressure value measured by the pressure sensor is greater than or equal to a predetermined value above the initial value for a predetermined number of consecutive times, outputs a detection of deterioration of the vacuum pump.

[0007] The component mounting device of the present disclosure is a component mounting device that uses a suction nozzle to suction components and mount them on a board, and is equipped with a vacuum pump that draws vacuum from the suction nozzle, a vacuum suction path that connects the vacuum pump and the suction nozzle, a pressure sensor that measures the air pressure in an air flow path that includes the vacuum suction path, and a vacuum pump status detection unit that detects the status of the vacuum pump based on the pressure value measured by the pressure sensor, and the vacuum pump status detection unit outputs a detection of deterioration of the vacuum pump when the pressure value measured by the pressure sensor is greater than or equal to a predetermined value for a predetermined number of consecutive times than the previously measured pressure value.

[0008] The component mounting method disclosed herein uses a vacuum pump that draws vacuum from a suction nozzle and a vacuum suction path connecting the vacuum pump and the suction nozzle to suction a component with the suction nozzle and mount it on a board, and includes the steps of: measuring the air pressure in an air flow path including the vacuum suction path with a pressure sensor; detecting the state of the vacuum pump based on the measured pressure value; setting an initial value for the air pressure; and outputting a detection of deterioration of the vacuum pump if the pressure value measured by the pressure sensor is greater than or equal to a predetermined value above the initial value for a predetermined number of consecutive times.

[0009] The component mounting method disclosed herein uses a vacuum pump that draws vacuum from a suction nozzle and a vacuum suction path connecting the vacuum pump and the suction nozzle to suction a component with the suction nozzle and mount it on a board, and a pressure sensor measures the air pressure in an air flow path including the vacuum suction path, detects the state of the vacuum pump based on the measured pressure value, and outputs a detection of deterioration of the vacuum pump if the pressure value measured by the pressure sensor is greater than or equal to a predetermined value for a predetermined number of consecutive times compared to the previously measured pressure value. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to output a detection of deterioration of a vacuum pump. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a plan view showing a schematic structure of a component mounting apparatus according to an embodiment of the present disclosure; [Figure 2] FIG. 1 is a perspective view showing a schematic configuration of a mounting head provided in a component mounting apparatus according to an embodiment of the present disclosure; [Figure 3] FIG. 1 is an explanatory diagram illustrating a schematic configuration of a mounting head provided in a component mounting apparatus according to an embodiment of the present disclosure; [Figure 4] FIG. 1 is an explanatory diagram of an air pressure circuit provided in a component mounting apparatus according to an embodiment of the present disclosure. [Figure 5] FIG. 1 is a block diagram showing a configuration for detecting deterioration of a vacuum pump according to an embodiment of the present disclosure. [Figure 6] FIG. 1 is a block diagram showing a schematic structure of a component mounting apparatus according to an embodiment of the present disclosure. [Figure 7] FIG. 10 is a diagram showing an example of an initial value set according to altitude according to an embodiment of the present disclosure. [Figure 8] FIG. 1 is a flow diagram illustrating an example of a flow for detecting deterioration of a vacuum pump according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of the present disclosure will be described in detail below with reference to the drawings. The configurations, shapes, etc. described below are examples for explanation purposes and can be modified as appropriate depending on the specifications of the component mounting device, mounting head, and component mounting system. In the following, corresponding elements in all drawings will be given the same reference numerals, and duplicated explanations will be omitted. In FIG. 1 and in some parts described below, two axes that are orthogonal to each other in a horizontal plane are shown: an X-axis in the substrate transport direction (left-right direction on the paper in FIG. 1 ) and a Y-axis that is orthogonal to the substrate transport direction (up-down direction on the paper in FIG. 1 ). In FIG. 1 and in some parts described below, a Z-axis (vertical direction on the paper in FIG. 1 ) is shown as a height direction that is orthogonal to the horizontal plane.

[0013] First, the configuration of a component mounting apparatus 1 will be described with reference to Fig. 1. Fig. 1 is a plan view showing a schematic structure of a component mounting apparatus 1 according to an embodiment of the present disclosure. In Fig. 1, two board transport mechanisms 3 are arranged side by side, one at the front and one at the rear in the Y-axis direction, on the upper surface of a base 2. Each board transport mechanism 3 transports, positions, and holds a board 4 along the X-axis. A component supply unit 5 is installed in front of the front board transport mechanism 3 and behind the rear board transport mechanism 3.

[0014] Each component supply unit 5 is equipped with a carriage 7 on which multiple tape feeders 6 are mounted in parallel along the X axis. The tape feeders 6 feed a carrier tape, on which pockets for storing components are formed, at a pitch in a direction (tape feed direction) from the outside of the component supply unit 5 toward the board transport mechanism 3, thereby supplying components to a component removal position where the mounting head picks up the components. Note that while FIG. 1 shows an example in which the tape feeders 6 are mounted on the component supply unit 5, a tray feeder having multiple stages of trays that hold pallets for storing components may be mounted instead of the tape feeders 6.

[0015] In FIG. 1, Y beams 8 equipped with linear drive mechanisms are arranged along the Y axis at both ends in the X axis direction on the top surface of base 2. Two X beams 9 equipped with linear drive mechanisms are connected to Y beam 8 so that they can move freely back and forth along the Y axis direction. Each X beam 9 is connected to a mounting head 20 that moves left and right along the X axis direction. Each mounting head 20 is equipped with multiple component holding heads 22 that have suction nozzles 21 at their tips (suction nozzle holders) that suction-hold components (see FIG. 2). Furthermore, mounting head 20 has a driving unit 24 on mounting head main body 23 that raises and lowers component holding head 22 (see FIG. 3).

[0016] The Y beam 8, X beam 9, and mounting head 20 perform a component mounting operation in which they take components from tape feeder 6 of component supply unit 5 and mount them at the mounting positions on board 4. During the component mounting operation, mounting head 20 moves above component supply unit 5 and picks up predetermined components with each suction nozzle 21. Next, mounting head 20 moves above board 4 and rotates the components held by each suction nozzle 21 in a predetermined direction, repeating a series of mounting turns to mount the components at their respective mounting positions.

[0017] 1, each X beam 9 is equipped with a head camera 10 that is positioned below the X beam 9 and moves integrally with the mounting head 20. As the mounting head 20 moves, the head camera 10 moves above the board 4 held by the board transport mechanism 3 and captures an image of a board mark (not shown) provided on the board 4. The position of the board 4 can be recognized from the image capture result.

[0018] A component camera 11, a nozzle changer 12, a reference post 13, and a height reference member 14 are respectively arranged on the base 2 between the front board transport mechanism 3 and the front component supply unit 5, and between the rear board transport mechanism 3 and the rear component supply unit 5. When the mounting head 20 takes a component from the tape feeder 6 of the component supply unit 5 and is positioned upward, the component camera 11 images the component held by the suction nozzle 21 from below. The holding posture of the component is recognized from the image results. During the component mounting operation, the mounting position is corrected taking into account the image results of the board 4 taken by the head camera 10 and the component taken by the component camera 11.

[0019] 1, nozzle changer 12 has a plurality of nozzle holding holes on the top, and replacement suction nozzles 21 and inspection jigs 15 (described later) are stored in the nozzle holding holes. Component holding head 22 of mounting head 20, to which suction nozzle 21 or inspection jig 15 is attached, accesses an empty nozzle holding hole and performs a predetermined removal operation, whereby suction nozzle 21 or inspection jig 15 attached to component holding head 22 is transferred to nozzle changer 12.

[0020] Furthermore, an empty component holding head 22 accesses the suction nozzle 21 or inspection jig 15 held by the nozzle changer 12 and performs a predetermined attachment operation, thereby attaching the suction nozzle 21 or inspection jig 15 to the component holding head 22. In this way, the component holding head 22 can replace the attached suction nozzle 21 with another suction nozzle 21 or inspection jig 15.

[0021] In FIG. 1, the reference post 13 and the height reference member 14 are arranged on the left and right sides of the component camera 11 and the nozzle changer 12 in the X-axis direction. The reference post 13 and the height reference member 14 are made of a hard material such as metal, and a calibration mark 16 is arranged on the top surface of each. The head camera 10 captures an image of the calibration mark 16 and recognizes the position of the calibration mark 16 in the horizontal plane, thereby correcting (calibrating) the position of the mounting head 20 in the horizontal plane. In addition, the height position of the mounting head 20 is corrected by lowering the component holding head 22 and bringing the suction nozzle 21 into contact with an area of ​​the top surface of the height reference member 14 other than the calibration mark 16 (see FIG. 3).

[0022] Next, the configuration of the mounting head 20 will be described in detail with reference to Figures 2 to 4. Figure 2 is a perspective view showing a schematic configuration of the mounting head 20 provided in the component mounting apparatus 1 according to an embodiment of the present disclosure. Figure 3 is an explanatory diagram of a schematic configuration of the mounting head 20 provided in the component mounting apparatus 1 according to an embodiment of the present disclosure. Figure 4 is an explanatory diagram of a pneumatic circuit provided in the component mounting apparatus 1 according to an embodiment of the present disclosure. Here, the mounting head 20 will be described as an example, which is a 16-nozzle head having eight component holding heads 22 arranged in the X-axis direction and two rows in the Y-axis direction.

[0023] 3, component holding head 22 is configured to include suction nozzle holder 26, which is the tip to which suction nozzle 21 is attached from below, rotary joint 27, and lifting shaft 28. Guide frame 25 is provided to hang down from the bottom of mounting head main body 23 of mounting head 20. Component holding head 22 moves up and down along guide frame 25 (arrow a).

[0024] The drive unit 24 of the mounting head main body 23 raises and lowers the lift shaft 28, and the rotary joint 27 and component holding head 22 rise and lower together with the lift shaft 28 along the guide frame 25. The rotary joint 27 is rotatably attached to the lift shaft 28, which rotates around the Z axis. The drive unit 24 rotates the lift shaft 28 around the Z axis, and the suction nozzle holder 26 rotates around the Z axis in conjunction with the rotation of the lift shaft 28. As a result, the suction nozzle 21 attached to the suction nozzle holder 26 (tip) rises and lowers and rotates around the Z axis. The drive unit 24 is controlled by a control unit 40 provided in the component mounting apparatus 1 (FIG. 5).

[0025] 2 to 4, the mounting head main body 23 is provided with a first valve 29, a second valve 30, a flow rate measuring device 31, and a filter 32 for each component holding head 22. The first valve 29 and the second valve 30 are two-input, one-output air valves, and are controlled by the control unit 40. The first valve 29 is provided with an output port T1, a first input port T2, and a second input port T3. The second valve 30 is provided with an output port T4, a first input port T5, and a second input port T6.

[0026] 3 and 4, the first input port T2 of the first valve 29 is connected to a vacuum pump 171, which is a negative pressure source, and the second input port T3 is connected to an output port T4 of the second valve 30. The first input port T5 of the second valve 30 is connected to a positive pressure source 34, and the second input port T6 is connected to an atmosphere opening 35.

[0027] The output port T1 of the first valve 29 is connected to a head main body-side tube connection 36 (see FIG. 3) provided on the mounting head main body 23 via a flow rate measuring device 31 and a filter 32. The rotary joint 27 of the component holding head 22 is provided with a rotary joint-side tube connection 37 (see FIG. 3). The rotary joint-side tube connection 37 is connected to an opening in the component holding surface 21a of the suction nozzle 21 via the rotary joint 27 and the suction nozzle holder 26. The head main body-side tube connection 36 and the rotary joint-side tube connection 37 are connected by a flexible tube 38 (see FIG. 3). The mounting head main body 23 is provided with a damper 39 that protects the tube 38 from collisions.

[0028] In this way, the air flow path leading from the output port T1 of the first valve 29 to the flow rate measuring device 31, filter 32, head main body-side tube connection portion 36, tube 38, rotary joint-side tube connection portion 37, rotary joint 27, and suction nozzle holder 26 constitutes a first air flow path P1 leading from the output port T1 of the first valve 29 to the suction nozzle 21. The air flow path leading from the flow rate measuring device 31 to the positive pressure source 34 or vacuum pump 171 via the first valve 29 and second valve 30 (flow path switching portion S) constitutes a second air flow path P2. The section of the first air flow path P1 from the head main body-side tube connection portion 36 of the mounting head main body 23 to the rotary joint-side tube connection portion 37 of the component holding head 22 is formed by a flexible tube 38.

[0029] 3 and 4, when the control unit 40 turns the first valve 29 off, the output port T1 is connected to the first input port T2, the output port T1 is connected to the vacuum pump 171, and the opening of the suction nozzle 21 is vacuum-suctioned through the first air flow path P1. When the control unit 40 turns the first valve 29 on, the output port T1 is connected to the second input port T3, and is connected to the output port T4 of the second valve 30. The vacuum required for vacuum-suction at the opening of the suction nozzle 21 is maintained by the vacuum pump 171 (see FIG. 5). The vacuum pump 171 is part of the component mounting mechanism 17 (see FIG. 5).

[0030] When the control unit 40 turns on the second valve 30 while the first valve 29 is in the ON state, the output port T4 is connected to the first input port T5, the output port T1 of the first valve 29 is connected to the positive pressure source 34, and air is blown out from the opening of the suction nozzle 21 through the first air flow path P1 (air blown). Furthermore, when the control unit 40 turns the second valve 30 off while the first valve 29 is in the on state, the output port T4 is connected to the second input port T6, the output port T1 of the first valve 29 is connected to the atmospheric opening 35, and the opening of the suction nozzle 21 is opened to the atmosphere through the first air flow path P1.

[0031] In this way, the first valve 29 and the second valve 30 constitute a flow path switching unit S that switches the first air flow path P1 so that it is connected to at least the positive pressure source 34 or the vacuum pump 171. The flow rate measuring device 31 measures the flow rate of air in the first air flow path P1 between the suction nozzle 21 and the flow path switching unit S. The first air flow path P1, the second air flow path P2, and the flow path switching unit S constitute an air pressure circuit R.

[0032] 3 and 4, a pressure gauge 331 and a pressure sensor 332 included in the component mounting mechanism 17 are provided between the vacuum pump 171 and the first input port T2. Here, the pressure gauge 331 measures the vacuum pressure in an analog or digital manner. The pressure sensor 332 outputs the measurement result of the vacuum pressure by the pressure gauge 331 in an analog or digital manner.

[0033] Next, with reference to FIGS. 5 to 8, deterioration detection of a vacuum pump will be described. FIG. 5 is a block diagram showing a configuration for deterioration detection of a vacuum pump according to an embodiment of the present disclosure. FIG. 6 is a block diagram showing a schematic structure of a component mounting device according to an embodiment of the present disclosure. FIG. 7 is a diagram showing an example of initial values ​​set according to altitude according to an embodiment of the present disclosure. FIG. 8 is a flow diagram showing an example of a flow for deterioration detection of a vacuum pump according to an embodiment of the present disclosure. Hereinafter, the pressure gauge 331 and the pressure sensor 332 will be described as measuring gauge pressure, which is generally less expensive. However, they may also measure absolute pressure.

[0034] As mentioned above, the vacuum pump 171 has a certain lifespan. Wear and tear on the internal components of the vacuum pump 171 (such as a drop in ultimate vacuum pressure or an increase in vacuum pressure) may occur before the component mounting apparatus 1 itself. If this occurs, the vacuum pump 171 must be repaired or replaced. Therefore, to prepare for replacement in advance, it is necessary to predict and detect signs of deterioration in the vacuum pump 171. Conventionally, deterioration of the vacuum pump 171 has been confirmed solely by measuring its vacuum pressure using the pressure gauge 331. However, inexpensive pressure systems typically measure gauge pressure. Gauge pressure is a pressure referenced to atmospheric pressure and does not measure absolute vacuum pressure. Therefore, because atmospheric pressure changes with changes in atmospheric pressure due to altitude, weather, and other factors, it is difficult to accurately measure the vacuum pressure of the vacuum pump 171. In other words, simply recording the acquired value makes it difficult to determine whether the pressure change is due to a deterioration in the vacuum function or a fluctuation in atmospheric pressure. Therefore, a method for detecting deterioration of the vacuum pump 171 that takes into account the influence of the surrounding atmospheric pressure is needed.

[0035] In this embodiment, a pressure sensor 332 is used. As shown in FIG. 5, a pressure sensor 332 is used to measure the pressure of the vacuum pump 171, and the measurement result of the pressure sensor 332 is output to the control unit 40. The control unit 40 then determines whether there are signs of deterioration, and if there are, outputs a degradation detection. The determination of whether there are signs of deterioration is made by comparing the pressure with the pressure of the vacuum pump 171 at the time of installation (initial value a413) and with the previous pressure measurement value. Details will be described later. It is preferable that the pressure gauge 331 that has been used conventionally be used as is. In this case, the pressure sensor 332 measures a gauge pressure.

[0036] Next, the configuration of the component mounting apparatus 1 for deterioration detection will be described. As shown in Fig. 6, the component mounting apparatus 1 includes a tape feeder 6, a substrate conveying mechanism 3, a head camera 10, a component camera 11, a component mounting mechanism 17, and a display 18. The component mounting mechanism 17 includes a vacuum pump 171 and a pressure sensor 332. The component mounting apparatus 1 also includes a control unit 40, which includes a memory unit 41, a mechanism control unit 42, and an image capture processing unit 43. The memory unit 41 stores mounting data 411, component data 412, an initial value a413, a previous pressure value M414, a current pressure value N415, a count P416, and a count Q417.

[0037] The mounting data 411 is data necessary for the component mounting operation of mounting components at mounting positions on the board 4. The component data 412 is data related to the components to be mounted on the board 4. As shown in Fig. 7, the initial value a is changed from the default pressure of the corresponding vacuum pump 171 at the time of shipment to an initial value a413 that varies depending on the altitude. In this way, the vacuum pump status detection unit 421 sets the initial value a413 based on the altitude of the installation location where the component mounting apparatus 1 is installed, and the initial value a413 of the vacuum pressure of each vacuum pump 171 is determined by the default vacuum pressure of the vacuum pump 171 and the altitude.

[0038] The previous pressure value M414 is the pressure of the vacuum pump 171 when it was measured last time (n-1th time). The current pressure value N415 is the pressure of the vacuum pump 171 when it was measured this time (nth time). For example, if the pressure of the vacuum pump 171 is measured once a day, the previous pressure value M414 is the measurement result from the previous day, and the current pressure value N415 is the measurement result from the current day. The count P416 is a count of the number of times the difference between the initial value a413 and the current pressure value N415 was equal to or greater than the threshold. The count Q417 is a count of the number of times the difference between the previous pressure value M414 and the current pressure value N415 was equal to or greater than the threshold.

[0039] The vacuum pump state detection unit 421 of the mechanism control unit 42 detects deterioration of the vacuum pump 171 using the initial value a413, the previous pressure value M414, the current pressure value N415, the count P416, the count Q417, and the like.

[0040] The image capturing processing unit 43 processes data captured by a camera such as the head camera 10 or the part camera 11 .

[0041] In this way, the component mounting device 1, which adsorbs components using the suction nozzle 21 and mounts them on the board 4, is equipped with a vacuum pump 171 that draws vacuum from the suction nozzle 21, a vacuum suction path (second air flow path P2) that connects the vacuum pump 171 and the suction nozzle 21, a pressure sensor 332 that measures the air pressure in the air flow path including the vacuum suction path (second air flow path P2), and a vacuum pump status detection unit 421 that detects the status of the vacuum pump 171 based on the pressure value measured by the pressure sensor 332.

[0042] Next, a detailed flow of deterioration detection will be explained. Here, the explanation will be given assuming that the threshold x of the pressure difference from the initial value of the vacuum pressure, which is used to determine deterioration, is 9 (kPa). Also, the explanation will be given assuming that the threshold y of the pressure difference from the previous pressure measurement value, which is used to determine deterioration, is 3 (kPa). However, the thresholds x and y are variable, and naturally the thresholds may be other numbers.

[0043] In the following flow, if the current vacuum pressure value N415 has risen by x (kPa) (9 kPa in this case) or more P times (three times in this case) consecutively from the initial vacuum pressure value a413, it is determined that there is a high possibility that the vacuum pump 171 has deteriorated. Based on this determination, a deterioration detection is output. The means for outputting the deterioration detection include displaying information informing of the deterioration detection on the display 18, turning on a lamp or the like, or outputting it by voice, and the means for this output are not limited. Furthermore, if the current vacuum pressure value N415 has risen by y (kPa) (3 kPa in this case) or more Q times (three times in this case) consecutively from the previous pressure value M414, it is determined that there is a high possibility that the vacuum pump 171 has begun to deteriorate. Based on this determination, a deterioration detection is output. If the current vacuum pressure value N415 rises by more than x (kPa) (here, 9 kPa) P times (here, three times) in a row from the initial vacuum pressure value a413, and if the current vacuum pressure value N415 rises by more than y (kPa) (here, 3 kPa) Q times (here, three times) in a row from the previous pressure value M414, it may be determined that deterioration has been detected.

[0044] As shown in Fig. 8, when the component mounting apparatus 1 is installed at a location where it is actually to be used, an initial value a413 of the vacuum pressure is set according to the altitude of that location, as explained in Fig. 7 (ST0). Also, the previous pressure value M414 is set to the initial value a413, and counts P416 and Q417 are set to 0 (zero). This completes the initial value setting (ST1).

[0045] Next, the control unit 40 of the component mounting apparatus 1 measures the vacuum pressure of the vacuum pump 171 based on the output from the pressure sensor 332 (ST2). The vacuum pressure is measured, for example, every day, and in this case, n, which indicates the number of measurements, increases each time a measurement is taken (for example, every day). The measurement result is N (kPa), that is, the current pressure value N415. After measuring the vacuum pressure, the control unit 40 (for example, the vacuum pump status detection unit 421) compares the initial value a413 with the n-th measurement result N (kPa), and determines whether the difference (Na) is smaller than the threshold value x (ST3).

[0046] In this example, x is 9 (kPa), so the control unit 40 (e.g., the vacuum pump status detection unit 421) determines whether the difference (i.e., (Na)) between the n-th measurement result N (kPa) (current pressure value N415) and the initial value a413 is smaller than 9 (kPa). If it is smaller (ST3: YES), the control unit 40 (e.g., the vacuum pump status detection unit 421) resets the count P416 to 0 (ST4). If it is larger (ST3: NO), the control unit 40 (e.g., the vacuum pump status detection unit 421) adds 1 to the count P416 (ST5). If the count P416 is 3 (ST6: YES), the control unit 40 (e.g., the vacuum pump status detection unit 421) outputs a warning that the vacuum pump has deteriorated. If the count P416 is less than 3 (ST6: NO), the control unit 40 proceeds to ST7.

[0047] Next, the current measurement result is compared with the previous measurement result. The control unit 40 (e.g., vacuum pump status detection unit 421) compares the previous pressure value M414 with the current pressure value N415 and determines whether the difference (NM) between them is smaller than the pressure difference threshold y (ST7). In this case, y is 3 (kPa), so the control unit 40 (e.g., vacuum pump status detection unit 421) determines whether the difference (i.e., (NM)) between the n-th measurement result N (kPa) (current pressure value N415) and the previous pressure value M414 is smaller than 3 (kPa). If it is smaller (ST7: YES), the control unit 40 (e.g., vacuum pump status detection unit 421) resets the count Q417 to 0 (ST8). If it is larger (ST7: NO), the control unit 40 (e.g., vacuum pump status detection unit 421) adds 1 to the count Q417 (ST9). If the count Q417 is 3 (ST10: YES), the control unit 40 (e.g., vacuum pump state detection unit 421) outputs a detection of deterioration of the vacuum pump. If the count Q417 is less than 3 (ST10: NO), the control unit 40 (e.g., vacuum pump state detection unit 421) stores the n-th measurement result N as the previous pressure value M414 in the memory unit 41 (ST11). Note that the control unit 40 repeats the processes from step ST2 to step ST11 again for the next measurement.

[0048] In this way, the vacuum pump state detection unit 421 sets an initial value a413 of atmospheric pressure, and when the pressure value measured by the pressure sensor 332 is greater than the initial value a413 by a predetermined value for a predetermined number of consecutive times, outputs a detection of deterioration of the vacuum pump 171. Furthermore, the vacuum pump state detection unit 421 outputs a detection of deterioration of the vacuum pump 171 when the current pressure value N415 measured by the pressure sensor 332 is greater than the previous pressure value M414 by a predetermined value for a predetermined number of consecutive times.

[0049] <About the technology of the present disclosure> As described above, the present disclosure discloses the following technical ideas. (Item 1) In a component mounting device (component mounting device 1) that picks up a component with a suction nozzle (suction nozzle 21) and mounts it on a substrate (substrate 4), a vacuum pump (vacuum pump 171) that sucks vacuum from the suction nozzle; a vacuum suction path (second air flow path P2) connecting the vacuum pump and the suction nozzle; a pressure sensor (pressure sensor 332) for measuring the air pressure in the air flow path including the vacuum suction path; a vacuum pump state detection unit (vacuum pump state detection unit 421) that detects the state of the vacuum pump based on the pressure value (current pressure value N415) measured by the pressure sensor, The vacuum pump status detection unit sets an initial value of the air pressure (initial value a413), and when the pressure value measured by the pressure sensor (current pressure value N415) is greater than the initial value by a predetermined number of consecutive times, outputs a deterioration detection signal for the vacuum pump. Component mounting equipment. As a result, the component mounting device can output a detection of deterioration of the vacuum pump.

[0050] (Item 2) the vacuum pump state detection unit sets the initial value based on the altitude of an installation location where the component mounting apparatus is installed. Item 1. The component mounting apparatus according to item 1. As a result, the component mounting device can more accurately output the detected deterioration of the vacuum pump.

[0051] (Item 3) The pressure sensor measures a gauge pressure. Item 1 or 2. The component mounting device according to item 1 or 2. As a result, the component mounting device can output the detection of deterioration of the vacuum pump at a lower cost.

[0052] (Item 4) In a component mounting device (component mounting device 1) that picks up a component with a suction nozzle (suction nozzle 21) and mounts it on a substrate (substrate 4), a vacuum pump (vacuum pump 171) that sucks vacuum from the suction nozzle; a vacuum suction path (second air flow path P2) connecting the vacuum pump and the suction nozzle; a pressure sensor (pressure sensor 332) for measuring the air pressure in the air flow path including the vacuum suction path; a vacuum pump state detection unit (vacuum pump state detection unit 421) that detects the state of the vacuum pump based on the pressure value (current pressure value N415) measured by the pressure sensor, The vacuum pump status detection unit outputs a deterioration detection signal for the vacuum pump when the pressure value measured by the pressure sensor (current pressure value N415) is greater than the pressure value measured previously (previous pressure value M414) by a predetermined value for a predetermined number of consecutive times. Component mounting equipment. As a result, the component mounting device can output a detection of deterioration of the vacuum pump.

[0053] (Item 5) The pressure sensor measures a gauge pressure. Item 4. The component mounting apparatus according to item 4. As a result, the component mounting device can output the detection of deterioration of the vacuum pump at a lower cost.

[0054] (Item 6) A component mounting method in which a vacuum pump (vacuum pump 171) that vacuums a suction nozzle (suction nozzle 21) and a vacuum suction path (second air flow path P2) that connects the vacuum pump and the suction nozzle are used to suction a component with the suction nozzle and mount it on a board (board 4), The pressure sensor (pressure sensor 332) measures the air pressure in the air flow path including the vacuum suction path (second air flow path P2), and detects the state of the vacuum pump based on the measured pressure value (current pressure value N415). Set the initial value of the atmospheric pressure (initial value a413), When the pressure value (current pressure value N415) measured by the pressure sensor 332 is equal to or greater than the initial value (initial value a413) by a predetermined number of consecutive times, a deterioration detection of the vacuum pump 171 is output. Component mounting method. As a result, the component mounting device can output a detection of deterioration of the vacuum pump.

[0055] (Item 7) A component mounting method in which a component is sucked by a suction nozzle (21) and mounted on a board (4) using a vacuum pump (171) that sucks a component from the suction nozzle (21) and a vacuum suction path (second air flow path P2) that connects the vacuum pump (171) and the suction nozzle (21), The pressure sensor 332 measures the air pressure in the air flow path including the vacuum suction path (second air flow path P2), and detects the state of the vacuum pump 171 based on the measured pressure value (current pressure value N415). When the pressure value (current pressure value N415) measured by the pressure sensor 332 is greater than the pressure value (previous pressure value M414) measured previously by a predetermined value for a predetermined number of consecutive times, a deterioration detection signal is output for the vacuum pump 171. Component mounting method. As a result, the component mounting device can output a detection of deterioration of the vacuum pump.

[0056] Although various embodiments have been described above with reference to the accompanying drawings, the present disclosure is not limited to such examples. It is clear that those skilled in the art can conceive of various modifications, alterations, substitutions, additions, deletions, and equivalents within the scope of the claims, and it is understood that these also fall within the technical scope of the present disclosure. Furthermore, the components of the various embodiments described above may be combined in any manner without departing from the spirit of the invention. [Industrial Applicability]

[0057] The component mounting device and component mounting method of the present disclosure have the effect of being able to output a detection of deterioration of a vacuum pump, and are useful in the field of mounting components on a board. [Explanation of symbols]

[0058] 1. Component mounting equipment 4 boards 14 Height reference member (contact member) 17 Component Mounting Mechanism 171 Vacuum Pump 21 Suction nozzle 22 Component holding head 26 Suction nozzle holder (tip) 31 Flow Meter 331 Pressure Gauge 332 Pressure Sensor 34 Positive pressure source 36 Head body side tube connection part (connection part) 37 Rotary joint side tube connection (connection) 38 tubes 40 Control Unit 41 Storage section 411 Implementation Data 412 parts data 413 Initial value a 414 Previous pressure value M 415 Current pressure value N 416 Count P 417 Count Q 42 Mechanism control unit 421 Vacuum pump status detection unit 43 Imaging processing unit 50 Parts Mounting System P1 First air flow path Q, Q1(N), Q2(N) flow rate R Air pressure circuit S Flow path switching section

Claims

1. In a component mounting device that picks up components with a suction nozzle and mounts them on a board, a vacuum pump that draws vacuum from the suction nozzle; a vacuum suction path connecting the vacuum pump and the suction nozzle; a pressure sensor for measuring the air pressure in the air flow path including the vacuum suction path; a vacuum pump state detection unit that detects the state of the vacuum pump based on the pressure value measured by the pressure sensor, the vacuum pump state detection unit sets an initial value of the air pressure, and when the pressure value measured by the pressure sensor is greater than or equal to a predetermined value a predetermined number of times consecutively than the initial value, outputs a detection of deterioration of the vacuum pump. Component mounting equipment.

2. the vacuum pump state detection unit sets the initial value based on the altitude of an installation location where the component mounting apparatus is installed. The component mounting device according to claim 1.

3. The pressure sensor measures a gauge pressure. The component mounting device according to claim 1 or 2.

4. In a component mounting device that picks up components with a suction nozzle and mounts them on a board, a vacuum pump that draws vacuum from the suction nozzle; a vacuum suction path connecting the vacuum pump and the suction nozzle; a pressure sensor for measuring the air pressure in the air flow path including the vacuum suction path; a vacuum pump state detection unit that detects the state of the vacuum pump based on the pressure value measured by the pressure sensor, the vacuum pump state detection unit outputs a detection of deterioration of the vacuum pump when the pressure value measured by the pressure sensor is equal to or greater than a predetermined value for a predetermined number of consecutive times compared to the pressure value measured last time. Component mounting equipment.

5. The pressure sensor measures a gauge pressure. The component mounting device according to claim 1 or 2.

6. A component mounting method in which a component is sucked by a suction nozzle and mounted on a board using a vacuum pump that sucks a component by vacuum from a suction nozzle and a vacuum suction path that connects the vacuum pump and the suction nozzle, a pressure sensor measures the air pressure in the air flow path including the vacuum suction path, and detects the state of the vacuum pump based on the measured pressure value; setting an initial value of the atmospheric pressure; When the pressure value measured by the pressure sensor is equal to or greater than the initial value by a predetermined number of consecutive times, a deterioration detection signal is output for the vacuum pump. Component mounting method.

7. A component mounting method in which a component is sucked by a suction nozzle and mounted on a board using a vacuum pump that sucks a component by vacuum from a suction nozzle and a vacuum suction path that connects the vacuum pump and the suction nozzle, a pressure sensor measures the air pressure in the air flow path including the vacuum suction path, and detects the state of the vacuum pump based on the measured pressure value; When the pressure value measured by the pressure sensor is equal to or greater than a predetermined value for a predetermined number of consecutive times compared to the pressure value measured last time, a deterioration detection signal is output for the vacuum pump. Component mounting method.

Images