JP2012106838A - Electronic parts supplying apparatus and method of supplying electronic parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic parts supplying apparatus and a method of supplying electronic parts which can always keep the supplying capacity of electronic parts corresponding to a processing capacity in a processing part.SOLUTION: The electronic parts supplying apparatus and the method of supplying electronic parts has a memory part 46 that memorizes the reference width of a passage time from the cancellation of a partition in a partition part 28 to the interruption of a detection part 32 with an electronic part E, a timing part 24A that measures the passage time from the cancellation of the partition in the partition part 28 to the interruption of the detection part 32 with the electronic part E, a dispersion computation part 24B that computes a passage time dispersion on the basis of a plurality of measuring results by the timing part 24A, a difference computation part 24C that computes a difference between the passage time dispersion computed in the dispersion computation part 24B and the reference width of the passage time memorized in the memory part 46, an amplitude correction part 24D that corrects the amounts of amplitudes in the carrying parts 14, 18 on the basis of the difference computed in the difference computation part 24C, and an amplitude control part 22 that controls the amplitudes of the carrying parts 14, 18 on the basis of the amounts of amplitudes in the carrying parts 14, 18 corrected in the amplitude correction part 24D.

Description

  The present invention relates to an electronic component supply apparatus and an electronic component supply method for supplying an electronic component to a processing unit.

  An alignment feeder that aligns and supplies the components, a transport feeder that transports the components to a processing unit (such as a turntable) at an average speed faster than the supply speed from the alignment feeder, and a stopper that stops feeding the components transported from the transport feeder, A sensor that detects that a component has been conveyed to the processing unit, and a component (first component) that is conveyed to the processing unit are detected by the sensor, and the next component (second component) is supplied before the next component is supplied. A component supply device is described in which a component (second component) is stopped by a stopper to separate components one by one and supply them to a processing unit (see Patent Document 1).

JP 2000-7136 A JP 2004-352395 A

  In the above prior art, as a control method of the parts feeder (defined as a concept including an alignment feeder and a transport feeder), there is a method of automatically controlling the vibration conditions (amplitude, frequency, elliptical trajectory) of the parts feeder as target conditions. I came. However, the supply capacity fluctuates due to factors other than the vibration conditions of the parts feeder, such as the weight of the part, surface shape, contamination of the conveying surface, and part shape. The vibration condition of the parts feeder has been adjusted so that the supply will be excessive. Adjusting the vibration condition of the parts feeder so that the parts are oversupplied to the processing unit can prevent the parts supply capacity from being reduced, but the parts supply speed will be too high. In addition, there is a problem that two parts enter the processing unit. Furthermore, if the time for which the supply of the parts is stopped by the stopper becomes long, the parts are not smoothly conveyed in the parts feeder, and thus there is a problem that the parts are clogged in the parts feeder.

  On the other hand, there is also a component supply device that is not provided with a stopper (see Patent Document 2). This component supply device calculates the component supply capability from the number of components passing within a predetermined time or the average time during which the components pass the sensor, and controls the amplitude of the parts feeder.

  Here, when the component supply device of Patent Document 1 and the component supply device of Patent Document 2 are combined, the component supply device of Patent Document 1 determines the component according to the average time from when the stopper is released until the component passes the sensor. A method for calculating the supply capacity and controlling the amplitude of the part feeder based on the difference between the average time and the target time is also conceivable.

  However, the average time varies depending not only on the supply capacity of the parts feeder, but also on the operation time of the stopper, the conveyance speed of the conveyance mechanism, the light quantity of the sensor, the threshold value of the sensor, etc. It is difficult to accurately control the supply capacity.

  Therefore, in view of the above problems, an object of the present invention is to provide an electronic component supply apparatus and an electronic component supply method that can always maintain the supply capability of an electronic component corresponding to the processing capability in a processing unit.

  The present invention is directed to a processing unit that performs predetermined processing on an electronic component, a conveyance unit that conveys the electronic component to the processing unit by vibration, and a leading electronic component among the conveyed electronic components from the processing unit side. A suction unit that transports the second electronic component from the top, a partition that prevents the second electronic component from being transported in a row with the first electronic component, and a detection unit that detects the electronic component being transported by suction An electronic component supply device that separates the electronic components of the transport unit one by one and supplies them to the processing unit, wherein the electronic component blocks the detection unit after releasing the partition of the partition unit A storage unit that stores a reference width of the passage time until the time, a time measurement unit that measures a passage time from when the partition of the partition unit is released until the electronic component blocks the detection unit, and a plurality of the time measurement units Based on the measurement results A variation calculation unit that calculates a subscript, a difference calculation unit that calculates a difference between the passage time variation calculated by the variation calculation unit and a reference width of the passage time stored in the storage unit, and the difference calculation An amplitude correction unit that corrects the amplitude amount of the transport unit based on the difference calculated by the unit, and a vibration that controls the vibration of the transport unit based on the amplitude amount of the transport unit corrected by the amplitude correction unit And a control unit.

  The variation calculation unit calculates a difference between the maximum passage time and the minimum passage time from a plurality of measurement results of the time measurement unit, and sets the difference between the maximum passage time and the minimum passage time as the passage time variation. Is preferred.

  The storage unit stores a maximum width and a minimum width that are permissible ranges for the passage time variation, and the amplitude correction unit is configured so that the passage time variation is larger than the maximum width or smaller than the minimum width. When this happens, it is preferable to correct the amplitude of the transport unit.

  It is preferable that the variation calculation unit calculates a dispersion value from a plurality of measurement results of the time measurement unit and sets the dispersion value multiplied by a constant as the passage time variation.

  The present invention also provides a processing unit that performs predetermined processing on an electronic component, a transport unit that transports the electronic component to the processing unit by vibration, and a leading electronic component among the transported electronic components on the processing unit side. A suction part that sucks and transfers from the first part, a partition part that prevents the second electronic component from the head from being transferred to the first electronic part, and a detection that detects an electronic part that is being transported by suction. And an electronic component supply device that separates the electronic components of the transport unit one by one and supplies them to the processing unit, after releasing the partition of the partition unit A first step of storing a reference width of the passage time until the electronic component blocks the detection unit in the storage unit, and a passage time until the electronic component blocks the detection unit after releasing the partition of the partition unit Is measured by the time measurement unit. A second step, a third step of calculating the passage time variation by the variation calculation unit based on a plurality of measurement results of the time measurement unit, and the passage time variation calculated by the variation calculation unit and the storage unit A fourth step of calculating a difference from the stored reference width of the passage time by a difference calculation unit, and correcting an amplitude amount of the transport unit by an amplitude correction unit based on the difference calculated by the difference calculation unit And a sixth step of controlling the vibration of the transport unit by an amplitude control unit based on the amplitude amount of the transport unit corrected by the amplitude correction unit.

  In the third step, the variation calculating unit calculates a difference between the maximum passing time and the minimum passing time from a plurality of measurement results of the time measuring unit, and calculates the difference between the maximum passing time and the minimum passing time. It is preferable to have time variation.

  In the first step, the storage unit stores a maximum width and a minimum width that are permissible ranges for the passage time variation. In the fifth step, the amplitude correction unit causes the passage time variation to be less than the maximum width. It is preferable to correct the amplitude amount of the transport unit when it becomes larger or smaller than the minimum width.

  In the third step, it is preferable that the variation calculating unit calculates a dispersion value from a plurality of measurement results of the time measuring unit, and a value obtained by multiplying the dispersion value by a constant is used as the passage time variation.

As described above, the supply capacity of electronic components that is always adapted to the processing capacity of the electronic components in the processing section, corresponding to the aging of the processing time of the electronic parts in the processing section and the average supply time of the electronic components to the processing section Is maintained so that the amplitude of the transport unit is controlled. Thereby, the following effects can be acquired.
(1) The supply capability of the electronic component does not decrease even under factors such as the weight and surface shape of the electronic component and the contamination of the conveyance surface of the conveyance unit.
(2) The supply capacity of electronic components does not become excessive, and it is possible to prevent two electronic components from entering the processing unit.
(3) Since the supply capability of the electronic component does not become excessive and the electronic component can be suppressed to the minimum by the stop unit, the electronic component can be smoothly conveyed on the conveyance unit. As a result, the electronic components are not easily jammed at the transport unit.
(4) The optimal electronic component supply capability of the electronic component supply apparatus can be maintained without adjusting the operation time of the stop unit, the conveyance speed in the conveyance unit, the light amount of the detection unit, and the threshold value.

  According to the present invention, it is possible to always maintain the electronic component supply capability corresponding to the processing capability of the processing unit.

It is a block diagram of the electronic component supply apparatus which concerns on 1st Embodiment of this invention. It is explanatory drawing which showed the structure of the main control part of the electronic component supply apparatus which concerns on 1st Embodiment of this invention. It is the flowchart which showed the supply method of the electronic component which concerns on 1st Embodiment of this invention. It is the figure which showed in time series the conveyance state (optimum supply) of an electronic component when the supply capability of an alignment feeder and a conveyance feeder is optimal. It is the figure which showed in a time series the conveyance state (oversupply) of an electronic component when the supply capability of an alignment feeder and a conveyance feeder is excessive. It is the figure which showed in time series the conveyance state (insufficient supply) of an electronic component when the supply capability of an alignment feeder and a conveyance feeder is insufficient. It is a figure which shows the passage time distribution of the electronic component at the time of the conveyance state of optimal supply. It is a figure which shows the passage time distribution of the electronic component at the time of the supply state of excessive supply. It is a figure which shows the passage time distribution of the electronic component at the time of the supply state with insufficient supply. It is a figure which shows the transit time distribution of an electronic component when it is the conveyance state of optimal supply, and dead time is small. It is a figure which shows the transit time distribution of an electronic component when it is the conveyance state of optimal supply, and dead time is large. It is the flowchart which showed the supply method of the electronic component which concerns on 2nd Embodiment of this invention.

  An electronic component supply apparatus and an electronic component supply method according to a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the electronic component supply device 10 is a device that separates the electronic components E one by one and supplies them to the processing unit 12. The electronic component supply apparatus 10 includes an alignment feeder 14. A piezoelectric actuator 16 which is a vibration generating unit is attached to the alignment feeder 14. A vibration having a predetermined amplitude and frequency is applied from the piezoelectric actuator 16 to the alignment feeder 14, and when the alignment feeder 14 vibrates, the electronic component E is supplied to a conveyance feeder 18 described later by the vibration.

  The electronic component supply apparatus 10 includes a conveyance feeder 18. A piezoelectric actuator 20 that is a vibration generating unit is attached to the transport feeder 18. A vibration having a predetermined amplitude and frequency is applied from the piezoelectric actuator 20 to the conveyance feeder 18, and the electronic component E is conveyed on the conveyance feeder 18 by the vibration of the conveyance feeder 18, and further passes through the non-vibration unit 29 to the processing unit 12 side. Transport toward

  In the present embodiment, the “conveyance unit” of the present invention is a concept including the alignment feeder 14, the conveyance feeder 18, and the non-vibration unit 29.

  The driving of the two piezoelectric actuators 16 and 20 is controlled by the vibration control unit 22. That is, the vibration control unit 22 controls the outputs of the two piezoelectric actuators 16 and 20 so that vibrations having a predetermined frequency and amplitude are applied to the alignment feeder 14 and the transport feeder 18. In addition, the vibration control part 22 is comprised by CPU, for example. The vibration control unit 22 controls driving of the two piezoelectric actuators 16 and 20 based on a control signal from a main control unit (for example, CPU) 24.

  The electronic component supply apparatus 10 includes a stopper 28 for separating the electronic components E being conveyed one by one and supplying them to the processing unit 12. The stopper 28 is provided in a non-vibrating portion 29 disposed on the downstream side of the conveyance feeder 18. The stopper 28 protrudes and appears in the groove of the non-vibrating part 29 that conveys the electronic component E, and protrudes into the groove of the non-vibrating part 29 so that the electronic component E on the non-vibrating part 29 is connected to the processing unit 12. Prevent supply. Further, when the stopper 28 is retracted from the non-vibrating portion 29, only the leading electronic component E is transported and supplied to the processing portion 12. The operation of the stopper 28 is controlled based on a control signal from the stopper driving unit 30. The stopper driving unit 30 controls the operation of the stopper 28 based on a control signal from the main control unit 24.

  A passage confirmation sensor 32 for detecting the passage of the electronic component E is disposed downstream of the stopper 28 in the electronic component conveyance direction. The passage confirmation sensor 32 is constituted by an optical sensor, for example, and includes a light emitting unit and a light receiving unit. When the electronic component passes between the light emitting unit 32A and the light receiving unit 32B, the light from the light emitting unit 32A is blocked by the electronic component E and is not received by the light receiving unit 32B, and is output from the light receiving unit 32B to the main control unit 24. The detection signal stops. A timer 24F built in the main control unit 24 counts the number of times reception of the detection signal is stopped. The computing unit 24E of the main control unit 24 calculates the number of electronic components E that have passed based on the count value from the timer 24F.

  As the passage confirmation sensor 32, for example, a CCD camera may be used. By analyzing the video obtained from the CCD camera based on a predetermined analysis program in the arithmetic unit 24E, it is also possible to confirm the electronic component E passing therethrough.

  The electronic component supply apparatus 10 includes a processing unit 12 for performing predetermined processing on the electronic component E. The processing unit 12 is disposed downstream of the vibration-free unit 29 in the electronic component conveyance direction. The processing unit 12 corresponds to, for example, a turntable for storing the electronic component E transported from the transport feeder 18 in an electronic component storage tape (not shown). The processing unit 12 is rotationally driven by a stepping motor 34. The stepping motor 34 is driven and controlled by the processing unit driving unit 36. Further, the processing unit driving unit 36 controls the rotational driving of the processing unit 12 based on a control signal from the main control unit 24. Note that the processing unit driving unit 36 is configured by a CPU, for example.

  Concave portions 38 are formed at equal intervals on the outer periphery of the processing unit 12. The recess 38 is formed so as to open to the outside in the radial direction of the processing unit 12. One electronic component E conveyed by the conveyance feeder 18 enters each concave portion one by one.

  An air suction hole 40 is formed in the recess 38. A suction valve 42 is provided at the inlet of the air suction hole 40 of the processing unit 12, and air can be sucked into the recess 38 by opening / closing the suction valve 42. Thereby, the electronic component E conveyed by the conveyance feeder 18 can enter the recess 38 by receiving the air suction force.

  The opening / closing operation of the suction valve 42 is executed by the suction valve drive unit 44. Further, the suction valve drive unit 44 controls the opening / closing operation of the suction valve 42 based on a control signal from the main control unit 24.

  Note that while the electronic component supply device 10 is being driven, the suction valve 42 is always open and the suction operation is continued.

  As shown in FIG. 2, the main control unit 24 determines the passage time from when the stopper 28 retracts from the non-vibrating part 29 to release the partition of the electronic component E until the electronic component E blocks the passage confirmation sensor 32. A time measuring unit 24A for measuring, a variation calculating unit 24B for calculating a passing time variation based on a plurality of measurement results of the time measuring unit 24A, the passage time variation calculated by the variation calculating unit 24B, and a storage unit described later A difference calculation unit 24C that calculates a difference from the reference width of the passage time variation stored in 46, and an amplitude that corrects the amplitude amounts of the alignment feeder 14 and the transport feeder 18 based on the difference calculated by the difference calculation unit 24C. And a correction unit 24D.

  In particular, the variation calculation unit 24B calculates a difference between the maximum passage time and the minimum passage time from a plurality of measurement results of the time measurement unit 24A, and determines the difference between the maximum passage time and the minimum passage time as passage time variation. To do.

  The vibration control unit 22 described above receives the control signal from the main control unit 24, and based on the amplitude amounts of the alignment feeder 14 and the transport feeder 18 corrected by the amplitude correction unit 24D, the two piezoelectric actuators 16, 20 are used. Control the output of.

  The main control unit 24 is electrically connected to the storage unit 46. The main control unit 24 may include the storage unit 46. The storage unit 46 is composed of, for example, a ROM, and stores a drive program for each unit, a calculation program for each unit of the main control unit 24, and the like. In particular, the storage unit 46 stores a reference width of a passage time that is a reference for a passage time variation from when the stopper 28 releases the partition of the electronic component E until the electronic component E blocks the passage confirmation sensor 32.

  An electronic component supply apparatus and an electronic component supply method according to a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1, 2, and 3, the main control unit 24 determines whether or not the control cycle has been reached (S100). Here, the “control cycle” refers to a cycle T for periodically determining the supply state of the electronic component E. The period T is stored in the storage unit 46 in advance, and when the period T is reached, determination of the supply state of the electronic component E is started.

  When the main control unit 24 determines that the control period has been reached (S100: YES), the time measurement unit 24A of the main control unit 24 measures the passage time a plurality of times (for example, 10 times) ( S110). Here, “passing time” means the time from when the stopper 28 is retracted from the non-vibrating portion 29 to when the electronic component E blocks the passage confirmation sensor 32. As described above, the passage confirmation sensor 32 confirms the passage of the electronic component E. Thereby, the passage times t1, t2, t3,..., T10 for each electronic component are calculated. The calculation result of the passage time is temporarily stored in the storage unit 46.

  Next, the passage time variation is calculated by the variation calculation unit 24B based on the measurement result of the passage time by the time measurement unit 24A multiple times (for example, 10 times) (S120). In particular, the variation calculation unit 24B calculates a difference between the maximum passage time and the minimum passage time from a plurality of measurement results of the time measurement unit 24A, and recognizes the difference between the maximum passage time and the minimum passage time as passage time variation. To do. Specifically, the variation calculation unit 24B calculates tmax−tmin = tr (passing time variation).

  Next, the difference calculation unit 24C calculates a difference between the passage time variation calculated by the variation calculation unit 24B and the reference width of the passage time variation stored in the storage unit 46 (S130). In S130, a difference (tr−ts) between the reference width ts of the passage time variation stored in advance in the storage unit 46 and the passage time variation tr described above is calculated.

  Next, the amplitude correction amount of the alignment feeder 14 and the transport feeder 18 is calculated by the amplitude correction unit 24D based on the difference (S140). In S140, the amplitude correction amounts of the alignment feeder 14 and the transport feeder 18 are calculated by multiplying the difference by a predetermined coefficient. Depending on whether the difference is positive or negative, the amplitude is increased or decreased, and the coefficient to be multiplied is also changed.

  As a method for determining the amplitude correction amount of the alignment feeder 14 and the transport feeder 18, for example, a table indicating the relationship between the difference and the amplitude correction amount is stored in advance in the storage unit 46, and the amplitude correction is performed based on this table. The unit 24D may determine the amplitude correction amount of the alignment feeder 14 and the transport feeder 18.

  Next, when the amplitude correction amounts of the alignment feeder 14 and the transport feeder 18 are calculated by the amplitude correction unit 24D, the vibration control unit 22 receives the control signal from the main control unit 24 and is corrected by the amplitude correction unit 24D. Based on the amplitude amounts of the alignment feeder 14 and the transport feeder 18, the outputs of the two piezoelectric actuators 16 and 20 are controlled. Thereby, the vibration of the alignment feeder 14 and the conveyance feeder 18 is controlled, respectively, and the supply capability of the electronic component E corresponding to the processing capability of the electronic component E in the processing unit 12 can be maintained.

  It should be noted that the present invention is not limited to the configuration in which the vibration amount is controlled by correcting the amplitude amounts of both the alignment feeder 14 and the transport feeder 18, and the vibration is corrected by correcting the amplitude amount of only one of the alignment feeder 14 or the transport feeder 18. May be controlled. In this case, the “conveyance unit” of the present invention is a concept that means either the alignment feeder 14 or the conveyance feeder 18.

  According to the first embodiment, the processing time of the electronic component E in the processing unit 12 and the processing time of the electronic component E in the processing unit 12 are adapted to changes over time of the supply time of the electronic component E to the processing unit 12. The vibration (or amplitude) of the alignment feeder 14 and the transport feeder 18 is controlled so that the supply capability of the electronic component E is maintained.

Thereby, the following effects can be acquired.
(1) The supply capability of the electronic component E does not decrease even under factors such as the weight and surface shape of the electronic component E and the contamination of the conveyance surface of the conveyance feeder 18.
(2) The supply capacity of the electronic component E does not become excessive, and it is possible to prevent two electronic components E from entering the processing unit 12.
(3) Since the supply capacity of the electronic component E does not become excessive and the situation where the electronic component E is stopped by the stopper 28 can be suppressed to the minimum, the electronic component E can be smoothly conveyed on the conveyance feeder 18. . As a result, the electronic component E is not easily clogged on the transport feeder 18 or the alignment feeder 14.
(4) Even without adjusting the operation time of the stopper 28, the conveyance speed in the conveyance feeder 18, the light amount of the passage confirmation sensor 32, and the threshold value, it is possible to maintain the optimal supply capability of the electronic component E of the electronic component supply apparatus 10. it can.

  Here, the relationship between the supply capability of the electronic component E of the alignment feeder 14 and the conveyance feeder 18 and the passage time distribution will be described. The “passing time distribution” means a frequency distribution of passing times.

  FIG. 4 is a diagram showing, in time series, the transport state (optimum supply) of the electronic component E when the supply capabilities of the alignment feeder 14 and the transport feeder 18 are optimal. FIG. 5 is a diagram showing, in time series, the transport state (oversupply) of the electronic component E when the supply capacity of the alignment feeder and the transport feeder is excessive. FIG. 6 is a diagram showing, in time series, the transport state (insufficient supply) of the electronic component E when the supply capacity of the alignment feeder and the transport feeder is insufficient. Each of the optimal supply, supply oversupply, and supply shortage exists at an arbitrary ratio in the operation time of the supply apparatus, and stable supply is performed as the ratio of the optimal supply time increases.

  FIG. 4 is a diagram illustrating a conveyance state in which the supply capabilities of the alignment feeder and the conveyance feeder are optimally supplied. Each electronic component E is conveyed in a state where there is a gap, and the gap becomes smaller as it approaches the stopper 28. As shown in FIG. 4, when the stopper 28 is released, the leading electronic component E is disposed in the vicinity of the stopper 28 with a minute gap therebetween.

  FIG. 7 is a diagram illustrating a transit time distribution of the electronic component E in the optimum supply conveyance state. When the stopper 28 is released, the leading electronic component E is located in front of the stopper 28, so that the variation in the transit time during which the electronic component E is transferred to the processing unit 12 by suction is relatively small. In this case, the variation in the transit time of the electronic component E is within an allowable range, and no problem occurs even if the amplitude of the alignment feeder 14 or the transport feeder 16 is not specially corrected. In other words, the passage time variation has a maximum width and a minimum width that are in an allowable range, and as long as it is within the allowable range, it is considered that the conveyance state is optimally supplied, and the amplitude is not corrected.

  FIG. 5 is a diagram illustrating a conveyance state when the supply capability of the alignment feeder and the conveyance feeder is excessive. Each electronic component E is filled in the non-vibrating portion 29 with no gap. As shown in FIG. 5, when the stopper 28 is released, the leading electronic component E is disposed in contact with the stopper 28.

  FIG. 8 is a diagram illustrating a transit time distribution of the electronic component E when the supply state is excessive. Since the leading electronic component E is always in front of the stopper 28, the variation in the transit time during which the electronic component E is transferred to the processing unit 12 is even smaller than in FIG. However, in this case, a force pushed from the rear acts on the second electronic component E from the top, and the situation where the partition 28 enters the processing unit 12 before the stopper 28 as the partition is lowered. Likely to happen. In this case, it is determined that the variation in the passage time of the electronic component E is less than the allowable minimum width and the supply capability is too large. Therefore, the amplitude of the alignment feeder 14 or the transport feeder 16 is corrected to be small.

  FIG. 6 is a diagram illustrating a conveyance state when the supply capability of the alignment feeder and the conveyance feeder is insufficient. Each electronic component E is transported with a gap. As shown in FIG. 6, when the stopper 28 is released, there is a large gap between the stopper 28 and the leading electronic component E. In particular, when the stopper 28 is lowered after the leading electronic component E is transported, a larger gap is formed between the second electronic component E from the leading edge and the stopper 28 compared to the optimum supply.

  FIG. 9 is a diagram illustrating a transit time distribution of the electronic component E when the supply state is insufficient. Since the distance between the electronic component E and the stopper 28 is large, the variation in the passing time during which the electronic component E is transferred to the processing unit 12 is larger than that in FIG. In this case, the variation in the transit time of the electronic component E exceeds the allowable maximum width, and it is determined that the supply capability is small. In order to increase the supply capability, the amplitude of the alignment feeder 14 or the transport feeder 16 is greatly corrected.

  The electronic component supply apparatus of Patent Document 2 employs a method of viewing the supply time average. In the electronic component supply apparatus of Patent Document 2, if the supply capability is insufficient, the supply time average becomes large. Therefore, in FIG.7 and FIG.9, the big difference has not arisen between this invention and the electronic component supply apparatus of patent document 2. FIG. Therefore, the following case will be described.

  FIG. 10 is a diagram illustrating a transit time distribution of the electronic component E when the optimum supply state is in use and the dead time is small. The “dead time” means the time from when the release signal of the stopper 28 is output from the main control unit 24 until the electronic component E actually starts moving. The dead time is generated because it is easily affected by disturbance such as twisting of the stopper 28. As shown in FIG. 10, when the stopper 28 is released, the electronic component E is located in the vicinity of the stopper 28, so that the variation in passing time when the electronic component E is transferred to the processing unit 12 is small. In this case, since the variation in the transit time of the electronic component E is within the allowable range, no problem arises even if the amplitude of the alignment feeder 14 and the transport feeder 18 is not specifically corrected to control the vibration (the state of FIG. 7). The same).

  FIG. 11 is a diagram illustrating a transit time distribution of an electronic component when the optimum supply conveyance state is set and the dead time is large. As shown in FIG. 11, the dead time increases due to the influence of disturbance. Although the time for the electronic component E to start moving is delayed, the original supply capability of the electronic component E is sufficient, so that the variation in transit time is the same as that in FIG. On the other hand, since the timing at which the electronic component E starts moving is delayed, the average value of the passing time is increased accordingly.

  The electronic component supply apparatus of Patent Document 2 employs a method of looking at the average value of the passage time. In FIG. 11, the average value of the passing time is increased, and it is determined that the supply capability of the electronic component E is insufficient even though the supply capability of the electronic component E is actually sufficient. For this reason, in order to increase the supply capability of the electronic component E, control contrary to the fact that the amplitudes of the alignment feeder 14 and the transport feeder 18 are increased is executed, and clogging is likely to occur in the transport unit. .

  On the other hand, according to the present embodiment, since the vibration of the alignment feeder 14 and the transport feeder 18 is controlled based on the variation of the passage time instead of the average value of the passage time of the electronic component E, the dead time is reduced. Even if the fluctuation occurs, it is not affected by this, and the appropriate supply capability of the electronic component E can be maintained.

  Next, an electronic component supply apparatus and an electronic component supply method according to a second embodiment of the present invention will be described. In addition, description is abbreviate | omitted about the structure which overlaps with the structure of the electronic component supply apparatus of 2nd Embodiment of this invention.

  In FIG. 2, the variation calculation unit 24B of the main control unit 24 calculates a dispersion value from a plurality of measurement results of the time measurement unit 24A, and determines a variation of the dispersion value by a constant as a transit time variation.

  Next, the operation and effect of the electronic component supply device and electronic component supply method of the second embodiment of the present invention will be described. Note that description of steps having the same contents as the steps described in the flowchart of FIG. 3 is omitted.

  As shown in FIG. 12, in S120A, the variation calculation unit 24B calculates a variance value from the measurement results of the time measurement unit 24A multiple times. Thereby, a dispersion value is calculated based on the measurement result of the passage time of the electronic component E over a plurality of times.

  In S120B, the variation calculation unit 24B multiplies the dispersion value calculated in S120A by a constant, and determines this as passage time variation.

  Next, in S130, the difference calculation unit 24C calculates the difference between the passage time variation calculated by the variation calculation unit 24B and the reference width of the passage time variation stored in the storage unit 46.

  In S140, the amplitude correction unit 24D calculates the amplitude correction amounts of the alignment feeder 14 and the transport feeder 18 based on the difference.

  Further, when the amplitude correction amounts of the alignment feeder 14 and the conveyance feeder 18 are calculated by the amplitude correction unit 24D, the vibration control unit 22 is based on the amplitude amounts of the alignment feeder 14 and the conveyance feeder 18 corrected by the amplitude correction unit 24D. The outputs of the two piezoelectric actuators 16 and 20 are controlled, and the vibrations of the alignment feeder 14 and the transport feeder 18 are controlled.

DESCRIPTION OF SYMBOLS 10 Electronic component supply apparatus 12 Processing part 14 Alignment feeder (conveyance part)
18 Transport feeder (transport section)
29 Non-vibrating part (conveying part)
22 Vibration control unit 24A Time measurement unit 24B Variation calculation unit 24C Difference advancement unit 24D Amplitude correction unit 28 Stopper (partition unit)
32 Passing sensor (detector)
46 Storage Unit E Electronic Component

Claims (8)

A processing unit that performs predetermined processing on the electronic component, a transport unit that transports the electronic component to the processing unit by vibration, and a leading electronic component among the transported electronic components is sucked and transferred from the processing unit side A suction unit, a partition unit that prevents the second electronic component from the head from being transferred to the first electronic component, and a detection unit that detects an electronic component being transferred by suction. , An electronic component supply device that separates the electronic components of the transport unit one by one and supplies them to the processing unit,
A storage unit that stores a reference width of a transit time from when the partition of the partition unit is released until the electronic component blocks the detection unit;
A time measuring unit that measures a passage time from when the partition of the partition unit is released until the electronic component blocks the detection unit;
A variation calculating unit that calculates a passing time variation based on a plurality of measurement results of the time measuring unit,
A difference calculation unit that calculates a difference between the passage time variation calculated by the variation calculation unit and a reference width of the passage time stored in the storage unit;
An amplitude correction unit that corrects an amplitude amount of the transport unit based on the difference calculated by the difference calculation unit;
A vibration control unit that controls vibration of the transport unit based on the amplitude amount of the transport unit corrected by the amplitude correction unit;
An electronic component supply device comprising:   The variation calculation unit calculates a difference between the maximum passage time and the minimum passage time from a plurality of measurement results of the time measurement unit, and sets the difference between the maximum passage time and the minimum passage time as the passage time variation. The electronic component supply apparatus according to claim 1. The storage unit stores a maximum width and a minimum width that are an allowable range for the passage time variation,
The amplitude correction unit corrects the amplitude amount of the transport unit when the variation in the passage time is larger than the maximum width or smaller than the minimum width. Electronic component supply device.   2. The electron according to claim 1, wherein the variation calculation unit calculates a dispersion value from a plurality of measurement results of the time measurement unit, and sets the dispersion value multiplied by a constant as the passage time variation. Parts supply device. A processing unit that performs predetermined processing on the electronic component, a transport unit that transports the electronic component to the processing unit by vibration, and a leading electronic component among the transported electronic components is sucked and transferred from the processing unit side An electron having a suction unit, a partition unit that prevents the second electronic component from the head from being transferred to the first electronic component, and a detection unit that detects an electronic component being transferred by suction. An electronic component supply method using a component supply device to separate the electronic components of the transport unit one by one and supply the separated electronic components to the processing unit,
A first step of storing in a storage unit a reference width of a passing time from when the partition of the partition unit is released until the electronic component blocks the detection unit;
A second step of measuring a passing time from when the partition of the partition part is released to when the electronic component blocks the detection part by the time measurement part;
A third step of calculating a passage time variation by a variation calculation unit based on a plurality of measurement results of the time measurement unit;
A fourth step of calculating a difference between the passage time variation calculated by the variation calculation unit and a reference width of the passage time stored in the storage unit by a difference calculation unit;
A fifth step of correcting the amplitude amount of the transport unit by an amplitude correction unit based on the difference calculated by the difference calculation unit;
A sixth step of controlling the vibration of the transport unit by the amplitude control unit based on the amplitude amount of the transport unit corrected by the amplitude correction unit;
A method for supplying an electronic component, comprising: In the third step,
The variation calculation unit calculates a difference between the maximum passage time and the minimum passage time from a plurality of measurement results of the time measurement unit, and sets the difference between the maximum passage time and the minimum passage time as the passage time variation. The electronic component supply method according to claim 5, wherein the electronic component supply method is an electronic component supply method. In the first step, the storage unit stores a maximum width and a minimum width that are an allowable range for the passage time variation,
In the fifth step, the amplitude correction unit corrects the amplitude amount of the transport unit when the variation in the passage time is larger than the maximum width or smaller than the minimum width. An electronic component supply method according to claim 6. In the third step,
6. The electronic component according to claim 5, wherein the variation calculation unit calculates a dispersion value from a plurality of measurement results of the time measurement unit, and sets the dispersion value as a constant multiple as the passage time variation. Supply method.

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