Diagnostic device, diagnostic method, and component supply device

Abstract

To provide a diagnostic device, a diagnostic method, and a component supply device that can easily and quickly diagnose the component supply device.SOLUTION: A diagnostic device of a tape feeder 2 that drives a transport mechanism of a component supply tape by a motor 23 includes a diagnosing unit 53. The tape feeder 2 includes an encoder 27 that detects rotation of an output shaft (a motor shaft 23J) of the motor 23, and a feeder control unit 40 that receives a feedback signal FS from the encoder 27 and controls the motor 23. The feeder control unit 40 includes a motor drive unit 42 that supplies an electric power to the motor 23 with pulses of a constant cycle, and a feedback unit 41b that outputs, to the motor drive unit 42, a command value (secondary command S2) that adjusts the width of the pulses output by the motor drive unit 42 based on the feedback signal FS. The diagnosing unit 53 diagnoses the state of the tape feeder based on the command value (secondary command S2) acquired from the tape feeder 2.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present disclosure relates to a diagnostic device, a diagnostic method, and a component supply device that diagnoses a component supply device that feeds components to a component mounting device by transporting a component supply tape that stores components. [Background technology]

[0002] A component mounting device uses a nozzle to pick up components supplied by a component supply device and place them on a circuit board. Various component supply devices are known, but a tape feeder is commonly used, which uses a sprocket to transport a component supply tape containing components and sequentially position each component at a predetermined component pick-up position. A tape feeder transports the component supply tape by engaging pins on the periphery of a sprocket with feed holes arranged at equal intervals along the length of the component supply tape. To accurately position components at the component pick-up position, the tape feeder's operating status, related to the motor's control of sprocket rotation, must always be normal. For example, the diagnostic devices shown in Patent Documents 1 and 2 listed below diagnose the condition of a motor while applying a load to the sprocket. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-302475 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-220314 Summary of the Invention [Problem to be solved by the invention]

[0004] However, as in the conventional method described above, applying a load to the sprocket every time a diagnosis of a parts supply device (tape feeder) is performed is inefficient, and there is a risk that the diagnostic equipment will become large and expensive.

[0005] Therefore, an object of the present disclosure is to provide a diagnostic device, a diagnostic method, and a component supply device that can easily and quickly diagnose a component supply device. [Means for solving the problem]

[0006] The diagnostic device disclosed herein includes a conveying mechanism that conveys a component supply tape containing components, a motor that drives the conveying mechanism, an encoder that detects the rotation of the output shaft of the motor, and a feeder control unit that receives a feedback signal from the encoder and controls the motor, wherein the feeder control unit includes a motor drive unit that supplies power to the motor in pulses at a constant period, and a feedback unit that outputs to the motor drive unit a command value that adjusts the width of the pulses output by the motor drive unit based on the feedback signal, and is a diagnostic device for a component supply device that conveys a component supply tape and supplies components to a component mounting device, and includes a diagnostic unit that diagnoses the condition of the component supply device based on the command value obtained from the component supply device.

[0007] The diagnostic method disclosed herein is a diagnostic method for a component supply device that feeds a component supply tape and supplies components to a component mounting device, the diagnostic method comprising: a conveying mechanism that conveys a component supply tape containing components; a motor that drives the conveying mechanism; an encoder that detects the rotation of the output shaft of the motor; and a feeder control unit that receives a feedback signal from the encoder and controls the motor, the feeder control unit including a motor drive unit that supplies power to the motor in pulses at a constant period; and a feedback unit that outputs to the motor drive unit a command value that adjusts the width of the pulses output by the motor drive unit based on the feedback signal ...

[0008] The component supply device disclosed herein is a component supply device that transports a component supply tape to supply components to a component mounting device, and includes a transport mechanism that transports the component supply tape containing components, a motor that drives the transport mechanism, an encoder that detects the rotation of the output shaft of the motor, and a feeder control unit that receives a feedback signal from the encoder and controls the motor, and the feeder control unit includes a motor drive unit that supplies power to the motor in pulses at a constant frequency, a feedback unit that outputs a command value to the motor drive unit that adjusts the width of the pulses output by the motor drive unit based on the feedback signal, and an output unit that outputs the command value as command value information that can be used by external equipment. [Effects of the Invention]

[0009] According to the present disclosure, a component supply device can be diagnosed simply and quickly. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a diagnostic device according to a first embodiment of the present disclosure together with a tape feeder to be diagnosed by the diagnostic device. [Figure 2] 1 is a side view of a main part of a component mounting device including a tape feeder diagnosed by a diagnostic device according to a first embodiment of the present disclosure. [Figure 3] 1 is a perspective view showing a component supply tape used in a tape feeder according to a first embodiment of the present disclosure, together with a reel. FIG. [Figure 4] FIG. 1 is a side view of a tape feeder according to a first embodiment of the present disclosure. [Figure 5] FIG. 1 is a side view of a tape feeder according to a first embodiment of the present disclosure. [Figure 6] FIG. 2 is a perspective view of a conveying mechanism included in the tape feeder according to the first embodiment of the present disclosure. [Figure 7] FIG. 2 is a diagram showing a signal transmission system of a feeder control unit included in the tape feeder according to the first embodiment of the present disclosure. [Figure 8]1A is a waveform diagram of a primary command output by a command unit of a feeder control unit included in the tape feeder according to the first embodiment of the present disclosure, and FIG. 1B is a waveform diagram of a secondary command output by a feedback unit. [Figure 9] 1A and 1B are perspective views showing the diagnostic device according to the first embodiment of the present disclosure together with a tape feeder. [Figure 10] 2 is a diagram showing a signal transmission system of a diagnostic unit included in the diagnostic device according to the first embodiment of the present disclosure. FIG. [Figure 11] FIG. 3 is a diagram showing a signal transmission system between a diagnostic unit and a feeder control unit in a state in which a tape feeder is attached to the diagnostic device in the first embodiment of the present disclosure. [Figure 12] FIG. 3 is a diagram showing an example of determination criterion data stored in a storage unit in a diagnostic unit of the diagnostic device according to the first embodiment of the present disclosure. [Figure 13] 1A is a waveform diagram of a primary command output by a command unit of a feeder control unit included in the tape feeder according to the first embodiment of the present disclosure, and FIG. 1B is a waveform diagram of a secondary command output by a feedback unit. [Figure 14] 1A is a waveform diagram of a primary command output by a command unit of a feeder control unit included in the tape feeder according to the first embodiment of the present disclosure, and FIG. 1B is a waveform diagram of a secondary command output by a feedback unit. [Figure 15] 5 is a flowchart showing a flow of diagnosis of a state of a tape feeder executed by the diagnostic device according to the first embodiment of the present disclosure. [Figure 16] 10 is a flowchart showing a flow of diagnosis of the state of a tape feeder executed by a diagnostic device according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0011] (Embodiment 1) 1 shows a diagnostic device 1 according to a first embodiment of the present disclosure, together with a tape feeder 2 that is diagnosed by the diagnostic device 1. The tape feeder 2 is used as a component supply device in a conventionally known component mounting device 3. First, the component mounting device 3 will be described with reference to FIG.

[0012] 2, the component mounting device 3 is provided with a pair of conveyors 12 extending in the X direction on a base 11. The conveyors 12 transport the board KB in a horizontal direction. For ease of explanation, the direction in which the conveyors 12 transport the board KB (the left-right direction as seen from the worker OP shown in FIG. 2) is defined as the X direction, the direction perpendicular to the X direction in the horizontal plane (the front-rear direction as seen from the worker OP) is defined as the Y direction, and the up-down direction is defined as the Z direction.

[0013] 2, a mounting head 13 is provided above the conveyor 12 so as to be movable by a head movement mechanism 14. The head movement mechanism 14 is, for example, an XY table mechanism, and moves the mounting head 13 in a horizontal direction (XY plane). The mounting head 13 is equipped with multiple nozzles 13N extending in the Z direction, and the mounting head 13 can generate a vacuum suction force at the bottom end of each nozzle 13N.

[0014] 2, the tape feeder 2 is attached to a block-shaped feeder base 15 that protrudes from the front side of the base 11 as seen from the operator OP in the Y direction. A reel RL around which the component supply tape BT is wound is rotatably held below the front side of the tape feeder 2 attached to the feeder base 15.

[0015] In Figure 3, the component supply tape BT includes a carrier tape CT and a cover tape TT attached to the carrier tape CT. The carrier tape CT contains a large number of components BH arranged side by side, and each component BH is enclosed within the carrier tape CT by the cover tape TT. A row of feed holes KH is formed in a line parallel to the row of components BH on the carrier tape CT.

[0016] The tape feeder 2 supplies components BH to a predetermined component take-out position 2T by pulling out the component supply tape BT from the reel RL and transporting it toward the rear as seen from the operator OP. The head movement mechanism 14 moves the mounting head 13 back and forth between the tape feeder 2 and the board KB. As a result, the mounting head 13 picks up the components BH supplied by the tape feeder 2 to the component take-out position 2T onto the lower ends of the nozzles 13N, moves above the board KB, and mounts the components BH at predetermined component mounting positions on the board KB.

[0017] 4 and 5, the tape feeder 2 includes a tape transport path 22, which is a transport passage for the component supply tape BT, inside a main body 21 attached to the feeder base 15. The tape transport path 22 extends in the Y direction as a whole inside the main body 21. An opening of the tape transport path 22 on the front side of the main body 21 serves as an insertion opening 22A for the component supply tape BT. An opening of the tape transport path 22 on the back side of the main body 21 serves as an ejection opening 22B for the component supply tape BT.

[0018] 4 and 5, a motor 23 and a transport mechanism 24 for the component supply tape BT, which is driven by the motor 23, are provided at the rear side of the main body 21. The transport mechanism 24 includes three sprockets 25 (inlet sprocket 25A, main sprocket 25B, and discharge sprocket 25C) and a gear mechanism 26. A plurality of pins (feed pins 25P) are provided at regular intervals on the outer periphery of each of the three sprockets 25. That is, in the tape feeder 2 according to the first embodiment, the transport mechanism 24 for the component supply tape BT includes a sprocket 25 having a plurality of pins (feed pins 25P) at regular intervals on the outer periphery that engage with feed holes KH formed in the component supply tape BT.

[0019] 4 and 5, the lead-in sprocket 25A, the main sprocket 25B, and the discharge sprocket 25C are arranged in this order from the rear (from the upstream side of the tape transport path 22). The motor 23 is arranged below and between the main sprocket 25B and the discharge sprocket 25C. As shown in FIG. 5, an encoder 27 is attached to the motor 23. The encoder 27 detects the rotation of the motor shaft 23J, which is the output shaft of the motor 23.

[0020] The gear mechanism 26 consists of a pinion 31 attached to the motor shaft 23J, a first gear 32 meshed with the pinion 31, a second gear 33 attached to the rotating shaft 32J of the first gear 32, a first transmission gear 34 meshed with the second gear 33, an introduction sprocket gear 35 arranged coaxially with the introduction sprocket 25A and meshed with the first transmission gear 34, a main sprocket gear 36 arranged coaxially with the main sprocket 25B and meshed with the first transmission gear 34, a second transmission gear 37 meshed with the main sprocket gear 36, and an exhaust sprocket gear 38 arranged coaxially with the exhaust sprocket 25C and meshed with the second transmission gear 37.

[0021] The three sprockets 25 (inlet sprocket 25A, main sprocket 25B, and discharge sprocket 25C) are rotated synchronously in the same direction by the rotational power generated by motor 23 transmitted via gear mechanism 26. The three sprockets 25 rotate in the direction in which the feed pin 25P located at the highest position on each sprocket 25 moves toward the rear. The component supply tape BT inserted into the tape transport path 22 from insertion opening 22A is conveyed toward the rear while being passed through the input sprocket 25A, main sprocket 25B, and discharge sprocket 25C in that order, and is then discharged from the main body 21 through discharge opening 22B. During this process, the cover tape TT is peeled off from the carrier tape CT just before reaching the component removal position 2T. Therefore, the components BH stored on the carrier tape CT are exposed upward when they reach the component removal position 2T.

[0022] The motor 23 is driven to rotate at a pitch rate so that the three sprockets 25 rotate intermittently at a fixed angle. This causes the component supply tape BT to advance intermittently at fixed distances, stopping the components BH stored on the carrier tape CT at the component take-out position 2T as it advances. This allows the mounting head 13 to pick up the components BH from the component take-out position 2T.

[0023] 4 and 5, a T-slot 21T extending in the Y direction is provided on the underside of main body 21 so as to protrude downward, and two positioning protrusions 21P, one above the other, are provided protruding forward at the rear end of main body 21. A downward protruding portion 21E is formed on the lower part of the front side of main body 21, and a fixed portion 21K and a feeder-side connector 21C are each provided on downward protruding portion 21E so as to protrude forward.

[0024] 4 and 5, a feeder control unit 40 is provided within downward protrusion 21E. When feeder control unit 40 receives an operation command for motor 23 output from component mounting device 3 (or diagnostic device 1, as will be described later), it controls motor 23 according to the operation pattern specified in the operation command. Feeder control unit 40 of the first embodiment controls motor 23 using PWM (Pulse Width Modulation). Here, the operation command CM is a signal that rotates (pitches) motor shaft 23J (i.e., three sprockets 25), and specifies the operation (speed, acceleration, amount of operation (rotation angle), etc.) of motor 23 included in tape feeder 2 to which the operation command CM is output.

[0025] 7, the feeder control unit 40 includes a main control unit 41 and a motor drive unit 42. The main control unit 41 is configured with an MPU (Micro Processing Unit), and includes a command unit 41a, a feedback unit 41b, and an output unit 41c.

[0026] 7, a command unit 41a receives an operation command CM for the motor 23 output from the component mounting device 3 (or the diagnosis device 1), and generates a primary command S1 defined by the received operation command CM. This primary command S1 includes a speed command (speed pattern) and a position command, and is output to a feedback unit 41b. Based on the primary command S1 output from the command unit 41a, the feedback unit 41b generates a secondary command S2 as a PWM command value for controlling the rotational operation of the motor 23. This secondary command S2 (PWM command value) is output to a motor drive unit 42 (FIG. 7).

[0027] The motor drive unit 42 outputs power to drive the motor 23, supplying the motor 23 with voltage or current pulses (hereinafter referred to as pulses) that repeatedly switch on and off at a fixed switching period. The motor drive unit 42 controls the power to drive the motor 23 by varying the ratio of on-time within the switching period (duty ratio) based on the secondary command S2 output from the feedback unit 41b. This causes the motor shaft 23J to rotate, which in turn rotates the three sprockets 25 via the gear mechanism 26. As the PWM command value increases, the ratio of the on-time, i.e., the pulse duty ratio, increases, and the power output from the motor drive unit 42 increases; on the other hand, as the PWM command value decreases, the output power decreases.

[0028] The actual rotation of motor 23 (motor shaft 23J) is detected by encoder 27 and input to feedback unit 41b as feedback signal FS (FIG. 7). Feedback unit 41b outputs secondary command S2 to motor drive unit 42. Feedback unit 41b also corrects secondary command S2 based on feedback signal FS from encoder 27. Feedback unit 41b determines the deviation (deviation) between primary command S1 and the operation of motor 23 (motor shaft 23J) based on feedback signal FS, and corrects secondary command S2 taking this deviation into account. As a result, motor 23 can cause motor shaft 23J to operate in accordance with the speed pattern commanded by primary command S1.

[0029] In this way, the secondary command S2 output by the feedback unit 41b reflects the actual rotation of the motor shaft 23J. Note that, if the condition of the motor 23 or the gear mechanism 26 deteriorates, the operation of the motor 23 will be delayed in response to the primary command S1. To correct this, the feedback unit 41b increases the secondary command S2, thereby increasing the power supplied from the motor drive unit 42 to the motor 23, and controls the operation of the motor 23 to be less delayed. Therefore, by checking the level of the signal corresponding to the secondary command S2, it is possible to estimate the deterioration state of the motor 23 or the gear mechanism 26. Specifically, as the deterioration state of the motor 23 progresses, the average signal level of the secondary command S2 increases. Therefore, it is possible to determine whether the motor 23 has reached a state requiring maintenance, depending on whether the average signal level of the secondary command S2 exceeds a predetermined determination threshold.

[0030] The operation command CM output from the component mounting device 3 (or the diagnostic device 1) to the tape feeder 2 is a command for rotating the motor shaft 23J of the motor 23 of the tape feeder 2 (i.e., the three sprockets 25), and the command unit 41a generates and outputs a primary command S1 based on the operation command CM. As shown in FIG. 8(a), the primary command S1 is a trapezoidal waveform speed pattern having a section (constant speed drive section TK) in which the motor 23 is driven at a constant speed. As shown in FIG. 8(b), the secondary command S2 (PWM command value) fluctuates widely in sections corresponding to the acceleration / deceleration sections of the speed pattern, but becomes a stable value with little fluctuation in sections corresponding to the constant speed drive section TK.

[0031] 7, the output unit 41c converts the secondary command S2 (PWM command value) output from the feedback unit 41b to the motor drive unit 42 into PWM command value information SJ (FIG. 7), which is command value information usable by (readable on the external device side) an external device, and outputs the PWM command value information SJ. In the first embodiment, the above-mentioned external device corresponds to the diagnostic device 1.

[0032] The feeder internal memory unit 43 (FIG. 7) provided in the tape feeder 2 stores various information including information on the type of the tape feeder 2 (feeder type information). Here, "feeder type information" refers to information on the model and type of the tape feeder 2. The feeder type information may be information that indirectly identifies the model and type of the tape feeder 2, such as the width direction of the component supply tape BT handled by the tape feeder 2. Generally, in the tape feeder 2, as the tape width of the component supply tape BT to be transported increases, the driving force of the motor 23 required to feed the component supply tape BT by a certain amount increases, and therefore the average voltage value that should be output from the main control unit 41 (the average voltage value in the region corresponding to the constant speed drive section TK of the primary command S1) increases.

[0033] Next, a description will be given of diagnostic device 1 for tape feeders 2. As shown in Fig. 1 and Figs. 9(a) and (b), diagnostic device 1 includes a feeder mounting base 52, a diagnostic unit 53, and a touch panel 54 on a stand 51. Feeder mounting base 52 includes a block-shaped base 61 and a wall 62 extending upward from the rear end of base 61.

[0034] 9(a) and 9(b), a plurality of slots 63, each extending along the Y direction, are arranged side by side in the X direction on the upper surface of the base portion 61. The aforementioned T-slot 21T formed on the lower surface of the main body portion 21 of the tape feeder 2 is slid from the front side of the base portion 61 and attached to each slot 63.

[0035] 9(a) and (b), fixing holes 64 and diagnostic device side connectors 65 are arranged vertically on the rear surface 61M of the base portion 61 of the feeder mounting stand 52, and each hole corresponds to one of the plurality of slots 63. Two positioning holes 66, arranged vertically, are provided on the wall portion 62 of the feeder mounting stand 52 at positions corresponding to the plurality of slots 63 (FIGS. 9(a) and (b)).

[0036] 10, the diagnostic device 1 includes, in addition to the diagnostic unit 53 described above, a power supply unit 71, an input unit 72, and a display unit 73. The diagnostic unit 53 is connected to each of a plurality of diagnostic device-side connectors 65 via an interface unit 74.

[0037] The diagnosis unit 53 receives inputs from the operator OP through the input unit 72 and notifies the operator OP of necessary information through the display unit 73. In the first embodiment, the touch panel 54 serves as both the input unit 72 and the display unit 73. The power supply unit 71 supplies power to the tape feeder 2 connected to the diagnostic device-side connector 65.

[0038] When mounting the tape feeder 2 on the feeder mounting table 52, the operator OP engages the T-slot 21T provided on the underside of the main body 21 of the tape feeder 2 with one of the multiple slots 63 provided on the upper surface of the feeder mounting table 52. At this time, the operator OP slides the tape feeder 2 relative to the slot 63 from the front side toward the back side in the Y direction (FIG. 9(a) → FIG. 9(b)). As a result, the two upper and lower positioning protrusions 21P provided on the main body 21 fit into the upper and lower positioning holes 66 provided on the wall 62, and the fixed portion 21K enters and engages with the fixing hole 64 on the base 61 side from the rear. In addition, the feeder-side connector 21C fits into and connects with the diagnostic device-side connector 65 from the rear, so that the tape feeder 2 is electrically and signal-transmittingly connected to the diagnostic device 1 (FIG. 11).

[0039] 10, diagnostic unit 53 includes diagnostic control unit 81 and diagnostic unit internal storage unit 82. Diagnostic control unit 81 outputs operation command CM to feeder control unit 40 of tape feeder 2 when feeder-side connector 21C and diagnostic device-side connector 65 are coupled (FIG. 11). Furthermore, diagnostic control unit 81 receives the aforementioned PWM command value information SJ, which is obtained by converting the secondary command (PWM command value) output from output unit 41c of tape feeder 2 into a state that can be read by diagnostic unit 53.

[0040] 10, diagnosis unit internal storage unit 82 stores judgment criterion data 83 used in diagnosis. In the first embodiment, judgment criterion data 83 includes two judgment thresholds (first judgment threshold R1 and second judgment threshold R2), as shown in the table of FIG. 12. Both first judgment threshold R1 and second judgment threshold R2 are judgment thresholds for comparing the average value (hereinafter referred to as the "constant speed section average value") of the PWM command value information SJ, i.e., the secondary command S2 (PWM command value), output from output unit 41c of tape feeder 2, in the section corresponding to the constant speed drive section TK of the primary command S1. In addition, the judgment threshold is set for each type of tape feeder 2, i.e., for each feeder type information.

[0041] Here, the first judgment threshold R1 is smaller than the second judgment threshold R2 and is a threshold for judging the condition of the tape feeder 2 to be "good." The second judgment threshold R2 is a threshold for judging the condition of the tape feeder 2 to be "bad." Therefore, if the constant speed section average value of the secondary command S2 output from the output unit 41c of the tape feeder 2 is equal to or smaller than the first judgment threshold R1 (FIG. 8(b)), the diagnosing unit 53 (diagnostic control unit 81) judges that the tape feeder 2 (motor 23 and gear mechanism 26) is in a good condition. If the constant speed section average value exceeds the first judgment threshold R1 and is equal to or smaller than the second judgment threshold R2 (FIG. 13), the tape feeder 2 is judged to be in a "caution required," that is, in a state requiring maintenance. If the constant speed section average value exceeds the second judgment threshold R2 (FIG. 14), the tape feeder 2 is judged to be "bad." A tape feeder 2 that is determined to be "in need of attention" can be used in the component mounting device 3 as normal, but if it continues to be used as is, it is highly likely to become "defective" in the near future, so early maintenance is recommended before that happens. On the other hand, if it is determined to be "defective," it is highly likely to cause trouble and reduce the operating rate of the component mounting device 3 if it is used as is, so it is prohibited from being used in the component mounting device 3 until it has been maintained and its condition has returned to "good."

[0042] Next, using the flowchart of Figure 15, we will explain the procedure for performing tape feeder condition diagnosis in which the diagnostic device 1 (more specifically, the diagnostic unit 53) diagnoses the condition of the tape feeder 2 attached to each slot 63 of the feeder attachment stand 52 while obtaining information from the tape feeder 2 being diagnosed.

[0043] 15, the diagnostic unit 53 starts diagnosing the slot 63 (first slot) located at the end of the plurality of slots 63 (sequentially referred to as the first slot, second slot, third slot, ...) provided in the feeder mounting table 52 (step ST1). The diagnostic unit 53 first checks whether a tape feeder 2 is attached to the target slot 63 (step ST2). This is done by the diagnostic unit 53 transmitting a signal to the feeder-side connector 21C corresponding to that slot 63 to attempt electrical continuity. If continuity is established between the feeder-side connector 21C and the signal, the diagnostic unit 53 determines that a tape feeder 2 is attached to the slot 63, and if continuity is not established, the diagnostic unit 53 determines that a tape feeder 2 is not attached to the slot 63.

[0044] If the diagnostic unit 53 determines in step ST2 that no tape feeder 2 is attached to the slot 63, it moves on to the next (adjacent) slot 63 (step ST3). If the diagnostic unit 53 determines in step ST2 that a tape feeder 2 is attached to that slot 63, it requests that tape feeder 2 to transmit information about the type of that tape feeder 2 (feeder type information) (step ST4).

[0045] When diagnostic unit 53 requests feeder type information from tape feeder 2, tape feeder 2 that has received the request transmits the feeder type information stored in its own intra-feeder memory unit 43 to diagnostic unit 53 (step ST5). When diagnostic unit 53 receives the feeder type information transmitted by feeder control unit 40, it compares the type of tape feeder 2 recognized based on the feeder type information with the list (a list of types of tape feeders 2 that are listed as diagnosable) stored in diagnostic unit memory unit 82, thereby determining whether the type of tape feeder 2 attached to slot 63 is suitable for diagnosis (step ST6).

[0046] If the diagnostic unit 53 determines in step ST6 that the tape feeder 2 attached to the slot 63 is not of a type that conforms to the diagnosis, it displays that fact on the touch panel 54 (display unit 73) (step ST7). Then, it determines whether there is an unconfirmed slot, which is a slot 63 for which the diagnosis of the tape feeder 2 has not yet been completed (step ST8), and returns to step ST3.

[0047] If the diagnostic unit 53 determines in step ST6 that the tape feeder 2 attached to the slot 63 is of a type that satisfies the diagnosis, it sets a judgment criterion for diagnosing the state of the tape feeder 2 (step ST9). The judgment criterion is set by acquiring two judgment thresholds (first judgment threshold R1 and second judgment threshold R2) corresponding to the type of the tape feeder 2 from the diagnostic unit internal storage unit 82 based on the feeder type information acquired from the tape feeder 2 in step ST5.

[0048] As described above, in embodiment 1, the diagnostic unit 53 is provided with an internal diagnostic unit memory unit 82 that stores the judgment criteria data 83 used in the diagnosis for each type of tape feeder 2, and is configured to select and obtain the judgment criteria data 83 for the tape feeder 2 being diagnosed from among the multiple judgment criteria data 83 (first judgment threshold R1 and second judgment threshold R2) stored in the internal diagnostic unit memory unit 82.

[0049] After setting the criteria for diagnosing the state of the tape feeder 2 in step ST7, the diagnostic unit 53 acquires diagnostic data (step ST10). The diagnostic unit 53 acquires the diagnostic data by outputting a diagnostic operation command CM to the feeder control unit 40 and receiving PWM command value information SJ (secondary command S2 (PWM command value)) output from the output unit 41c by the feeder control unit 40, which has operated in accordance with the operation command CM. In the first embodiment, the diagnostic unit 53 outputs the diagnostic operation command CM multiple times in step ST10 to acquire multiple pieces of PWM command value information SJ as diagnostic data. The diagnostic data may include the PWM command value information SJ for one operation command CM; however, it is preferable to acquire the PWM command value information SJ for one rotation or more of the main sprocket 25B as diagnostic data.

[0050] After acquiring the diagnostic data in step ST10, the diagnostic unit 53 performs a condition diagnosis of the tape feeder 2 (step ST11). The condition diagnosis of the tape feeder 2 is performed based on the PWM command value information SJ (secondary command S2 (PWM command value)) acquired by the diagnostic unit 53 from the feeder control unit 40. The diagnostic unit 53 extracts the PWM command values ​​output during the period corresponding to the constant-speed drive section TK from the PWM command value information SJ, calculates the average value as the constant-speed section average value, and compares this with the judgment threshold value to diagnose the condition of the tape feeder 2. For example, as shown in FIG. 8(b), if the constant-speed section average value does not exceed the first judgment threshold value R1, the tape feeder 2 is judged to be "good." Furthermore, as shown in FIG. 13, if the constant-speed section average value exceeds the first judgment threshold value R1 but does not exceed the second judgment threshold value R2, the tape feeder 2 is judged to be "needs attention." Furthermore, as shown in FIG. 14, if the constant-speed section average value exceeds the second judgment threshold value R2, the tape feeder 2 is judged to be "poor."

[0051] As described above, in the first embodiment, the diagnosing unit 53 diagnoses the state of the tape feeder 2 using the secondary command S2 (PWM command value) during constant-speed drive (in the constant-speed drive section TK of the trapezoidal waveform) when the motor 23 is driven at a constant speed. More specifically, the diagnosing unit 53 causes the motor 23 to perform drive to pitch rotate the sprocket 25 a plurality of times, and diagnoses the state of the tape feeder 2 using the secondary command S2 acquired during these multiple constant-speed drives. Note that, here, the diagnosing unit 53 performs the diagnosis using a plurality of secondary commands S2 acquired by rotating the sprocket 25 a plurality of times, but it is sufficient that the diagnosing unit 53 performs the diagnosis using the secondary command S2 acquired by rotating the sprocket at least one time.

[0052] After diagnosing the condition of the tape feeder 2 in step ST11, the diagnosing unit 53 proceeds to step ST7 and outputs the result. Here, the result of the determination in step ST11, "Good," "Caution required," or "Bad," is displayed on the touch panel 54 (display unit 73).

[0053] After displaying the results in step ST7, diagnostic unit 53 determines whether there are any unconfirmed slots, which are slots 63 for which the diagnosis of tape feeder 2 has not yet been completed (step ST8). If there are any unconfirmed slots, the process proceeds to step ST3, and if there are no unconfirmed slots, the series of diagnostics ends.

[0054] (Embodiment 2) Next, a description will be given of diagnostic device 1 in embodiment 2 of the present disclosure. Diagnostic device 1 in embodiment 2 is almost the same as diagnostic device 1 in embodiment 1 (hence, the flowchart showing the diagnostic flow is also almost the same), and the diagnostic flow is also almost the same as in the case of diagnostic device 1, but in embodiment 2, criterion data 83 used to diagnose the state of tape feeder 2 is stored in in-feeder storage unit 43 of that tape feeder 2 (FIGS. 7 and 11).

[0055] The judgment criterion data 83 may include the judgment thresholds (first judgment threshold R1 and second judgment threshold R2) described in the first embodiment, as well as constant speed section average values ​​obtained by diagnosing the tape feeder 2 when it was unused (at the time of shipment from the factory) or after maintenance. As shown in the flowchart of FIG. 16, when the diagnosing unit 53 requests feeder type information from the feeder control unit 40 in step ST4, the feeder control unit 40 transmits the judgment criterion data 83 (first judgment threshold R1 and second judgment threshold R2) along with the feeder type information stored in the intra-feeder memory unit 43 (step ST5a). Having received the judgment criterion data 83, the diagnosing unit 53 sets the judgment criterion based on the judgment criterion data 83 (step ST9a in FIG. 16).

[0056] The judgment criterion data 83 may be the judgment thresholds (first judgment threshold R1 and second judgment threshold R2) described in the first embodiment, or may be a constant speed section average value (initial state value) obtained by diagnosing the tape feeder 2 when it is unused (at the time of shipping from the factory) or after maintenance. When a judgment threshold is used as the judgment criterion data 83, the diagnosis unit 53 sets the acquired judgment threshold value as the judgment criterion in step ST5a. When an initial state value is used as the judgment criterion data 83, the diagnosis unit 53 determines and sets the judgment criterion based on the initial state value. For example, the value obtained by multiplying the initial state value by a predetermined coefficient is set as the judgment threshold.

[0057] In this way, in the diagnostic device 1 of embodiment 2, the feeder internal memory unit 43 of the feeder control unit 40 stores judgment criteria data 83 used in diagnosing the condition of the tape feeder 2, and the diagnostic unit 53 is configured to acquire the judgment criteria data 83 from the feeder internal memory unit 43.

[0058] In the diagnostic device 1 in the second embodiment, the secondary command S2 (PWM command value), which is diagnostic data, is output from the output unit 41c of the tape feeder 2 (feeder control unit 40) to the diagnostic unit 53 of the diagnostic device 1, and the diagnostic unit 53 can diagnose the condition of the tape feeder 2 based on the secondary command S2 output from the tape feeder 2. In the second embodiment, the same effects as in the first embodiment can be obtained, but in the second embodiment, the judgment criterion data 83 stored in the memory unit (feeder internal memory unit 43) of the tape feeder 2 is used, so that the condition can be determined based on the individual judgment criterion of the tape feeder 2. This enables detailed diagnosis that takes into account individual differences between tape feeders 2.

[0059] As described above, tape feeder 2, which is the target of diagnosis by diagnostic device 1 in embodiments 1 and 2, includes conveyance mechanism 24 that conveys component supply tape BT storing components BH, motor 23 that drives conveyance mechanism 24, encoder 27 that detects rotation of motor shaft 23J, which is the output shaft of motor 23, and feeder control unit 40 that receives feedback signal FS from encoder 27 and controls motor 23. Feeder control unit 40 further includes motor drive unit 42 that supplies power to motor 23 in pulses at a constant frequency, feedback unit 41b that outputs to motor drive unit 42 a command value (secondary command S2) that adjusts the width of the pulses output by motor drive unit 42 based on feedback signal FS, and output unit 41c that outputs secondary command S2 as command value information (PWM command value information SJ) that can be used by diagnostic device 1, which is an external device, and is configured to convey component supply tape BT and supply components BH to component mounting device 3.

[0060] As described above, in the first and second embodiments, the tape feeder 2 is also able to transmit the command value (secondary command S2) output to the motor drive unit 42 to the diagnostic device 1, which is an external device of the tape feeder 2, and the diagnostic device 1 (diagnostic unit 53) can diagnose the state of the tape feeder 2 based on the secondary command S2 output from the output unit 41c of the tape feeder 2. Therefore, it is not necessary to apply a load to the sprocket 25, which is the object to be driven by the motor 23, as in the conventional case, and it is possible to easily and quickly diagnose the tape feeder 2, which is a component supplying device.

[0061] As explained above, the diagnostic device 1 (diagnostic method) in embodiments 1 and 2 acquires a secondary command S2 (a command value that adjusts the pulse width to the motor drive unit that supplies power to the motor 23 in pulses with a constant period based on a feedback signal FS of the rotation of the motor 23 that drives the conveying mechanism 24), which is a command value that the tape feeder 2 outputs to its external device, and diagnoses the condition of the tape feeder 2 based on the acquired secondary command S2, so that the tape feeder 2 can be diagnosed easily and quickly.

[0062] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above and various modifications are possible. For example, in the above-described embodiment, two judgment thresholds (first judgment threshold R1 and second judgment threshold R2) are prepared as judgment criterion data 83, but the number of judgment thresholds is not limited as long as there is at least one. Note that, if there is one judgment threshold, it is preferable that the judgment threshold be a value at which it can be determined that tape feeder 2 is defective (a value corresponding to the second judgment threshold R2 corresponding to "defective" described above). [Industrial Applicability]

[0063] A diagnostic device, a diagnostic method, and a parts supply device that can easily and quickly diagnose a parts supply device. [Explanation of symbols]

[0064] 1 Diagnostic equipment (external equipment) 2 Tape feeder (component supply device) 3. Parts mounting equipment 22 Tape transport path 23 Motor 23J Motor shaft (output shaft) 24 Transport mechanism 25 sprockets 25P Feed pin (pin) 26 Gear mechanism 27 Encoder 40 Feeder control section 41 Main control unit 41a Command Department 41b Feedback section 41c Output section 42 Motor drive unit 43 Feeder internal memory 52 Feeder mounting stand 53 Diagnostic Department 82 Diagnostic unit internal memory unit 83 Criteria Data FS Feedback Signal S1 Primary Directive S2 Secondary command (command value) R1 First decision threshold R2 Second decision threshold BT Parts Supply Tape KH feed hole BH parts

Claims

1. a diagnostic device for a component supplying device that supplies components to a component mounting device by feeding a component supply tape, the diagnostic device comprising: a transport mechanism that transports a component supply tape that stores components; a motor that drives the transport mechanism; an encoder that detects rotation of an output shaft of the motor; and a feeder control unit that receives a feedback signal from the encoder and controls the motor, the feeder control unit including: a motor drive unit that supplies power to the motor in pulses at a constant frequency; and a feedback unit that outputs to the motor drive unit a command value that adjusts the width of the pulses output by the motor drive unit based on the feedback signal; a diagnostic unit that diagnoses a state of the component supply device based on the command value acquired from the component supply device, Diagnostic equipment.

2. the diagnosing unit performs the diagnosis using the command value during constant speed driving in which the motor is driven at a constant speed. The diagnostic device of claim 1 .

3. the conveyance mechanism includes a sprocket having a plurality of pins at a constant pitch on its outer periphery that engage with feed holes formed in a component supply tape, and the diagnosis unit causes the motor to perform drive to rotate the sprocket by a pitch multiple times, and performs the diagnosis using the command value acquired during the multiple constant speed drives. The diagnostic device of claim 2 .

4. the diagnosing unit performs the diagnosis using the command value acquired by rotating the sprocket at least once. The diagnostic device of claim 3.

5. the diagnosing unit includes an internal storage unit that stores criterion data to be used in the diagnosis for each type of the component supply device, and selects and acquires the criterion data corresponding to the component supply device that is the target of the diagnosis from the internal storage unit; The diagnostic device of claim 1 .

6. the feeder control unit includes an in-feeder storage unit that stores criterion data to be used in the diagnosis, and the diagnosis unit acquires the criterion data from the in-feeder storage unit. The diagnostic device of claim 1 .

7. A diagnostic method for a component supplying device that supplies components to a component mounting device by feeding a component supply tape, the diagnostic method comprising: a transport mechanism that transports a component supply tape that stores components; a motor that drives the transport mechanism; an encoder that detects rotation of an output shaft of the motor; and a feeder control unit that receives a feedback signal from the encoder and controls the motor, the feeder control unit including a motor drive unit that supplies power to the motor in pulses at a constant frequency; and a feedback unit that outputs to the motor drive unit a command value that adjusts the width of the pulses output by the motor drive unit based on the feedback signal, the diagnostic method comprising: diagnosing a state of the component supply device based on the command value acquired from the component supply device; Diagnostic methods.

8. The diagnosis is performed using the command value during constant speed driving in which the motor is driven at a constant speed. The diagnostic method according to claim 7.

9. the conveyance mechanism includes a sprocket having a plurality of pins at a constant pitch on its outer periphery that engage with feed holes formed in a component supply tape, and the diagnosis is performed by causing the motor to perform a plurality of pitch rotations of the sprocket, and using the command value acquired during the plurality of constant speed drives. The diagnostic method according to claim 8.

10. The diagnosis is performed using the command value obtained by rotating the sprocket at least once. The diagnostic method according to claim 9.

11. The judgment criteria data used in the diagnosis is stored for each type of the component supply device, and the judgment criteria data for the component supply device that is the target of the diagnosis is selected and acquired from a plurality of stored judgment criteria data. The diagnostic method according to claim 7.

12. the feeder control unit stores judgment criteria data used in the diagnosis in a feeder internal storage unit included in the feeder control unit, and acquires the judgment criteria data from the feeder internal storage unit; The diagnostic method according to claim 7.

13. A component supply device that conveys a component supply tape and supplies components to a component mounting device, a transport mechanism for transporting a component supply tape containing components; a motor that drives the transport mechanism; an encoder for detecting rotation of an output shaft of the motor; a feeder control unit that receives a feedback signal from the encoder and controls the motor; Equipped with The feeder control unit a motor drive unit that supplies power to the motor in pulses at a constant cycle; a feedback unit that outputs to the motor drive unit a command value that adjusts the width of the pulse output by the motor drive unit based on the feedback signal; an output unit that outputs the command value as command value information that can be used by an external device; Including, Parts supply device.

14. the feeder control unit has an in-feeder storage unit that stores criterion data used in diagnosing the component supply device, and the output unit outputs the criterion data to a diagnosing device that performs the diagnosis. The component supply device according to claim 13.

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