JP3995955B2 - Parts selection device and parts supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component selection device and a component supply device, and more particularly to a component conveyance technique suitable for selecting and supplying electronic components.
[0002]
[Prior art]
2. Description of the Related Art Generally, a component supply apparatus that moves electronic components along a conveyance path, aligns them, and supplies them is known. As such a component supply device, for example, there is a vibration-type component supply device that vibrates a vibrating body constituting a conveyance path by vibration and moves a component on the conveyance path in a specified direction by vibration.
[0003]
FIG. 4 is a schematic plan view showing an example of the structure of the vibration component supply apparatus. This parts supply device 100 includes a bowl-type feeder 110 provided with a vibrating tray 111, a linear feeder 120 connected to the bowl-type feeder 110, and a part for selecting parts that move on the conveying path 113 of the bowl-type feeder 110. And a sorting device 130.
[0004]
The bowl-shaped feeder 110 includes a vibration generation source (not shown) that vibrates the vibrating tray 111 that is a body to be vibrated in the circumferential direction. When a component (not shown) is supplied to the inner bottom portion 112 of the vibrating tray 111, the inner bottom portion 112 is provided. The components ascend along the spiral conveyance path 113 formed on the peripheral wall surface inclined from above, and the components are eventually fed to the linear feeder 120 via the conveyance connection portion 114.
[0005]
The linear feeder 120 includes a vibration rail 121 that is a body to be vibrated and a vibration generation source (not shown) that vibrates the vibration rail 121 in its longitudinal direction. A conveyance path 122 is formed on the vibration rail 121. Has been. The parts sent from the conveyance connecting portion 114 of the bowl-shaped feeder 110 move on the conveyance path 122.
[0006]
The parts sorting device 130 receives sensor outputs from a parts sorting unit 131 facing the outermost peripheral portion of the conveyance path 113 of the bowl-shaped feeder 110, and a discrimination sensor and an origin sensor provided in the parts sorting unit 131, A sensor amplifier 132 that outputs a detection signal after amplification / modulation, the control device 133 that receives the detection signal output from the sensor amplifier 132, and a drive signal to each unit based on the control signal output from the control device 133 The air flow control valve 135 connected to the component selection unit 131, which includes a drive circuit 134 and an electromagnetic valve that operates according to the drive signal sent from the drive circuit 134, and gas (for example, compressed air) Etc.) and a gas supply unit 136 composed of a compressor or the like for feeding the device.
[0007]
The component sorting device 130 detects the quality of a component moving on the conveyance path 113 in the bowl-shaped feeder 110, for example, the quality of the component posture using a discrimination sensor or the like, and the component posture is poor (for example, In the case of a posture such as lying down or reversing with respect to the normal posture), the air flow control valve 135 is opened in accordance with the passage timing of the parts detected by the origin sensor, and the defective parts are conveyed. 113 is configured to be excluded from above.
[0008]
FIG. 5 schematically shows an enlarged structure of the sorting portion in the component sorting unit 131 in the conventional component sorting apparatus 130, and shows the operation timing of this sorting operation. A discrimination sensor 2 and an origin sensor 3 are disposed along the conveyance path 1 in the component sorting unit 131, and an airflow blowing port 4 is provided in front of the origin sensor 3 (upstream side). The inclination of the conveyance path 1 changes at a position corresponding to the origin sensor 3 so that each component P can be detected even when the origin sensor 3 continuously conveys a plurality of parts P on the conveyance path 1. It is configured.
[0009]
At this time, the sensor amplifier 132 outputs the discrimination signal D based on the output of the discrimination sensor 2, and the sensor amplifier 132 outputs the origin signal S based on the output of the origin sensor 3 that detects the passage timing of the parts. Based on the determination signal D and the origin signal S, the control device 133 outputs a control signal C to the drive circuit 134. This control signal C is a signal for controlling the airflow control valve 135 to open and close.
[0010]
As shown in FIG. 5, when the origin signal S is H (high potential or ON) and the discrimination signal D is H (high potential or ON) and it is determined that the part is a non-defective product, the origin signal Even at the passage timing of the part detected by S, the control signal C remains L (low potential or OFF), and no airflow is blown onto the part. However, if the discrimination signal D remains L when the origin signal S becomes H, the part is determined to be defective. In this case, the control signal C becomes H, the airflow control valve 135 is opened, and the airflow is blown to the parts determined to be defective in the parts selection unit 131, and is excluded from the conveyance path. Thereafter, when the predetermined time Tb elapses, the control signal C returns to L and the airflow is stopped.
[0011]
[Problems to be solved by the invention]
However, in the component supply apparatus 100, the airflow blowing timing by the component sorting apparatus 130 is deviated from the actual component transfer position, that is, the timing when the component reaches the airflow blowing position and the airflow blowing are performed. There is a case where a defective part passes through the part selection unit 131 due to a deviation from the timing of the part selection. In particular, if the distance from the airflow control valve 135 to the airflow blowing port 4 is increased, the delay until the airflow is actually blown from the airflow blowing port 4 after the component P is detected by the origin sensor 3 increases. When the conveyance speed is increased, there is a problem in that the frequency of passing the component P without hitting the air flow increases.
[0012]
For this reason, conventionally, as shown by the dotted line in FIG. 4, a method of preventing defective parts from passing by providing two or more similar parts selection units 131 has been adopted. If the sorting units 131 are provided in multiple stages, it is difficult to make the apparatus compact, and the manufacturing cost increases.
[0013]
Therefore, the present invention solves the above-described problems, and an object of the present invention is to provide a component sorting device that can reduce component sorting mistakes and a component supply device that includes this component sorting device.
[0014]
[Means for Solving the Problems]
  In order to solve the above-described problem, the component sorting apparatus according to the present invention includes a determination unit that determines a state of a component that moves on the conveyance path, and the component in the first state passes through the conveyance path as it is, so that the second state The component selecting means for blowing and selecting the air flow on the parts in the normal state, and the normal state, the air flow is blown onto the conveying path, and when the component determined as the first state by the determining means passes An airflow control means for temporarily stopping the airflow;Component passage detection means for knowing the passage timing of the component determined to be the first state by the determination means, and the airflow control means is configured to detect the passage timing of the component determined to be the first state. In response to stopping the airflow, and when the next part determined to be in the second state comes immediately after the part determined to be in the first state, according to the passage timing of the next part Resume airflow before the next part arrivesIt is characterized by that.
[0015]
According to the present invention, the air flow is normally blown onto the conveyance path by the air flow control means, and the air flow is stopped when a part (for example, a non-defective product) determined to be in the first state by the determination means passes. By doing so, it is possible to reduce the probability of occurrence of a selection error in which a component (for example, a defective product) in the second state passes by mistake as it is.
[0016]
  Also,It has component passage detection means for knowing the passage timing of the component determined as the first state by the determination means, and the airflow control means determines that the first state is detected by the component passage detection means. Stopping the airflow according to the passing timing of the partsThus, in general, stopping the airflow makes it easier to shorten the response time than starting the airflow spraying, so that the probability of erroneously selecting parts in the first state can be reduced. For example, when it is configured to supply gas from the airflow control valve to the airflow selection unit via an airflow path such as an air tube, the gas must be a compressible fluid when starting to blow the airflow. From the opening of the airflow control valve, there is a certain time lag until the air pressure in the airflow selection unit rises and sufficient airflow is blown onto the conveyance path. Since the air flow is decelerated in a short time due to the pressure drop, the time lag from when the air flow control valve is closed until the air flow blown on the conveyance path substantially stops is substantially more than the time lag at the start of the blowing. Therefore, when the part in the first state reaches the spraying position of the airflow, the airflow is still not stopped and the airflow is blown to the part. It is possible to reduce the probability. Further, in the present invention, normally, the blowing position of the airflow is more than the position of the component detected by the component passage detection means for knowing the passage timing of the component determined to be the first state by the determination means. Although it is arranged on the downstream side, since the response time of the airflow stop is short as described above, the interval between the detection position of the component passage detection means and the airflow blowing position can also be reduced. This makes it possible to accurately match the airflow stop timing with the arrival timing of the parts, further reduce the selection mistakes, and easily cope with an increase in the conveyance speed of the parts and an increase in the conveyance density. It becomes like this.
[0017]
Further, when the next component determined to be in the second state comes immediately after the component determined to be in the first state, the airflow control means determines whether the next component is in accordance with the passage timing of the next component. By restarting the blowing of the airflow before reaching the airflow, the airflow remains stopped until the next part is sent, so that the non-defective product can be passed more reliably. In the present invention, normally, the airflow control means is set so as to resume the blowing of the airflow when a predetermined time has elapsed after passing the part determined to be in the first state by the part passage detection means. However, if the predetermined time during which the airflow remains stopped is set too short, there is a high possibility that the blowing of the airflow will resume before the parts determined to be in the first state have passed. Since the frequency of blowing airflow increases, it is necessary to lengthen the predetermined time to some extent. However, if the predetermined time is lengthened, there is an increased possibility that the part determined to be in the second state will pass through as it is. In contrast, according to the present invention, the predetermined time is lengthened to some extent to reliably pass the part determined to be in the first state, and the air flow is immediately resumed when the next part determined to be in the second state arrives. Then, since it becomes possible to blow the airflow reliably for the next part, the sorting accuracy can be further improved.
[0018]
  In the present invention,If the next part does not arrive within a predetermined time set in advance, the air flow control means restarts the blowing of the air flow when the predetermined time elapses, and sets the second state before the predetermined time elapses. When the determined next part arrives, the blowing of the airflow is resumed when a variable time that changes according to the passage timing of the next part elapses.It is preferable.
[0019]
  In the present invention, it is preferable that the component passage detection means is constituted by an origin sensor that constitutes a part of the determination means.
[0020]
  Next, the component supply device of the present invention is a component supply device that moves and supplies a component along a conveyance path, aligns the component and sends the component to the conveyance path, and a component alignment unit on the conveyance path. In a normal state, a determination unit that determines a state of a moving component, a component selection unit that allows the component in the first state to pass through the conveyance path as it is, and blows and selects the component in the second state. Is configured to blow the airflow onto the conveyance path, and airflow control means for temporarily stopping the airflow when the part determined to be in the first state by the determination means passes;Component passage detection means for knowing the passage timing of the component determined to be the first state by the determination means, and the airflow control means is configured to detect the passage timing of the component determined to be the first state. In response to stopping the airflow, and when the next part determined to be in the second state comes immediately after the part determined to be in the first state, according to the passage timing of the next part Resume airflow before the next part arrivesIt is characterized by that.
[0021]
  In the present invention,If the next part does not arrive within a predetermined time set in advance, the air flow control means restarts the blowing of the air flow when the predetermined time elapses, and sets the second state before the predetermined time elapses. When the determined next part arrives, the blowing of the airflow is resumed when a variable time that changes according to the passage timing of the next part elapses.It is preferable.
[0022]
  In the present invention,The component passage detection means is composed of an origin sensor that constitutes a part of the determination means.It is preferable.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a component selection device and a component supply device according to the present invention will be described in detail with reference to the accompanying drawings. Since the component selection device and the component supply device of this embodiment have the same schematic configuration as the component selection device 130 and the component supply device 100 shown in FIG. 4 described above, the description of the same components is omitted, and the following components are omitted. In the description, the overall configuration will be described using the reference numerals shown in FIG.
[0024]
As shown in FIG. 4, the component selection device 130 of this embodiment includes a component selection unit 131, a sensor amplifier 132, a control device 133, a drive circuit 134, an airflow control valve 135, and a gas supply unit 136.
[0025]
FIG. 3 is a partial inner view (a) showing a part of the part selection unit 131 viewed from the center side of the bowl-shaped feeder 110, and a part viewed from above (a). It is a fragmentary sectional view (b) shown. As shown in FIG. 3, the component sorting unit 131 includes a sorting block 131A incorporated in the outer peripheral portion of the bowl-shaped feeder 110, and a sensor plate 131B and an airflow control plate 131C incorporated in the sorting block 131A. is doing. The sorting block 131 </ b> A and the sensor plate 131 </ b> B incorporated therein constitute a conveyance path 131 </ b> X in the component sorting unit 131 provided in the middle of the conveyance path 113. In the conveyance path 131X, the portion before the apex portion 131Xa (upstream portion) is an ascending gradient, and the portion before the apex portion 131Xa (downstream portion) is a descending gradient. That is, the transport path 131X is configured such that the transport direction changes midway.
[0026]
Further, a discrimination sensor 131Y is incorporated in the sensor plate 131B, and the discrimination sensor 131Y is configured to detect whether or not the component P on the transport path 131X is in a normal posture through the opening 131Ba. Has been. The opening 131Ba opens slightly upstream (upstream) from the apex 131Xa on the road surface of the transport path 131X. This discrimination sensor 131Y is, for example, whether or not the light irradiated to the discrimination sensor 131Y from above through the opening 131Ba is blocked by the component P, or the light emitted from the discrimination sensor 131Y through the aperture 131Ba is reflected by the component P. The posture of the component P can be known by whether or not it returns to the discrimination sensor 131Y again through the opening 131Ba.
[0027]
An origin sensor 131Z is disposed on the side of the apex 131Xa of the transport path 131X, and the origin sensor 131Z is configured to detect whether or not the component P passes through a position directly above the apex 131Xa. . For example, whether or not the light irradiated toward the origin sensor 131Z from the opposite side across the conveyance path 131X is blocked by the component P, or the light irradiated on the apex portion 131Xa from the origin sensor 131Z to the component P It is possible to know that the part P has passed over the apex 131Xa by whether or not it is reflected and returned to the origin sensor 131Z again.
[0028]
The airflow control plate 131C is formed with an airflow blowing port 131W facing the transport path 131X, and the airflow blowing port 131W communicates with an airflow communication portion 131Ca provided in the airflow control plate 131C. The airflow communication path 131Ca communicates with the airflow introduction hole 131Aa of the sorting block 131A, and a pipe such as an air tube connected to the airflow control valve 134 is connected to the airflow introduction hole 131Aa. Therefore, the gas supplied from the gas supply unit 136 is configured to be blown onto the conveyance path 131X from the airflow blowing port 131W through the airflow introduction hole 131Aa and the airflow communication unit 131Ca when the airflow control valve 135 is opened. .
[0029]
As described above, the origin sensor 131Z is configured to detect the component at a position where the conveyance direction of the conveyance path 131X changes, so that the pair of front and rear components P are continuously conveyed in close contact with each other. However, since a gap is formed between the pair of parts P at the position where the transport direction changes, the origin sensor 131Z can detect the front and rear parts P, respectively. However, if the front and rear parts P are not in close contact with each other, it is not necessary to provide the change in the transport direction of the transport path 131X as described above.
[0030]
In the present embodiment, as described above, in the component sorting unit 131, the sensor plate 131B with the discrimination sensor 131Y attached to the sorting block 131A is mounted. There is an advantage that the sensor plate 131B can be easily replaced when the detection position of the discrimination sensor 131Y is changed. Further, since the joint between the sorting block 131A and the sensor plate 131B is disposed on the transport path 131X, there is an advantage that the opening 131Ba provided in the transport path 131X can be easily processed by groove processing or the like.
[0031]
In the present embodiment, as described above, in the component sorting unit 131, the airflow control plate 131C having the airflow blowing port 131W is attached to the sorting block 131A, so the airflow control plate is replaced. There is an advantage that the position of the airflow blowing port 131W can be easily changed. Further, the airflow communication part 131Ca provided in the sorting block 131A is configured to be wider than the airflow spraying port 131W when viewed in the extending direction of the transport path 131X so that it can cope even if the position of the airflow blowing port 131W is changed. . The above-mentioned advantage usually requires a design in which the distance between the origin sensor 131Z and the airflow blowing port 131W is changed due to the difference in the length L of the component P, the conveyance speed, and the like. This is particularly effective when changing the shape and size of parts, when changing the conveyance speed, and when adjusting the sorting accuracy.
[0032]
The interval Gs between the detection position of the origin sensor 131Z (position on the apex 131Xa) and the airflow blowing position from the airflow blowing port 131W (front position of the airflow blowing port 131W) is a component that has been conveyed in a normal posture. It is preferably 1 to 2 times, preferably 1.2 to 1.8 times the length L in the transport direction of P. In the case of this embodiment (illustrated example), the interval is about 1.5 times the length L of the component. If this interval is larger than the above range, the time from the detection by the origin sensor 131Z until the part P reaches the front of the airflow blowing port 131W and the transport distance become longer, and therefore a timing deviation from the airflow control is likely to occur. Become. Moreover, if the said space | interval becomes smaller than the said range, it will become easy to delay the timing of airflow control from the arrival timing of components.
[0033]
Moreover, it is preferable that the width Wb of the conveyance direction of the airflow blowing port 131W is in the range of 1/4 to 3/4 of the length L of the component P. In the case of the present embodiment (illustrated example), the interval is set to about 1/3 of the length L of the component. When the width of the airflow blowing port 131W is larger than the above range, the possibility of entraining the next component P that is subsequently conveyed increases. Further, if the width of the airflow blowing port 131W is smaller than the above range, it is difficult to apply a sufficient exclusion pressure to the component P to exclude the component P from the conveyance path 131X, and the necessary gas supply pressure must be increased. Furthermore, the response speed of the airflow is also reduced.
[0034]
FIG. 1 is a timing chart showing the operation timing of the first embodiment of the component sorting apparatus. In FIG. 1, the discrimination signal D is a detection signal based on the output of the discrimination sensor 131 </ b> Y as described above, the origin signal S is a detection signal based on the output of the origin sensor 131 </ b> Z, and the control signal C is output from the control device 133. Control signal. Here, when the origin signal S becomes H (specifically, at the timing of the rising edge of the origin signal S), the state of the component P is determined depending on whether the determination signal D is H or L.
[0035]
In the present embodiment, the control signal C is normally H (high potential; ON) and the airflow is being blown. At this time, if the discrimination signal D is H and the component P is a non-defective product in the first state when the origin signal S becomes H, the control signal C is generated according to the passing timing indicated by the origin signal S. L (low potential; OFF), and airflow is stopped. More specifically, when the determination signal D becomes H and the component P is determined to be non-defective, the control signal C is changed from H to L with reference to the timing of the falling edge (H → L) of the origin signal S. become. In the present embodiment, the control signal C is switched to L after a delay time Td (for example, about 5 ms) from the falling edge of the origin signal S, and the airflow discharged from the airflow blowing port 131W is stopped.
[0036]
The stop period in which the airflow remains stopped when the airflow is temporarily stopped as described above is a preset time T0 when the next part does not arrive. However, when the next part determined to be defective in the second state arrives before the predetermined time T0 elapses, the control signal C becomes H again according to the passage timing of the next part P, and the airflow Spraying is resumed. In this case, the stop period is a variable time T1 that changes according to the passage timing of the next part. The predetermined time T0 is set to about 1.5 to 2.5 times the expected time (calculated based on the average value of the expected conveyance speed of the component) until the component finishes passing through the airflow spray port. It is preferable. For example, if the expected time is about 40 ms, it is about 100 ms. If the predetermined time T0 is shorter than the above range, the possibility of rejecting non-defective products increases. Conversely, if the predetermined time T0 is longer than the above range, the advantage of the present embodiment obtained by controlling the stop point of the airflow is exhibited. It becomes difficult.
[0037]
More specifically, with respect to the restart timing of the airflow in this embodiment, the rising edge when the next component P determined to be defective in the second state is detected by the origin sensor 131Z and the origin signal S becomes H The control signal C changes from L to H with reference to the timing of (L → H). In the present embodiment, the control signal C immediately switches from L to H in conjunction with the rising edge of the origin signal S, and the blowing of airflow is resumed.
[0038]
In addition, when the component P determined to be the non-defective product in the first state arrives and the air flow is stopped and the component P determined to be the non-defective product in the first state arrives again, the arrival interval of the components P Is longer than the predetermined time T0, the blowing of airflow is resumed. However, when the arrival interval of the part P is shorter than the predetermined time T0, the airflow remains stopped until the next part has passed.
[0039]
In the present embodiment, even if the part P passes, the control signal C remains H and the airflow is continuously blown unless the discrimination signal D reveals that it is a non-defective product. That is, the airflow is temporarily stopped only when the non-defective part P passes by the airflow outlet 131W.
[0040]
By the way, in recent years, since the conveyance speed of parts has increased, it is necessary to secure a certain distance between the position where the passage of the part is detected by the origin sensor and the position where the airflow is blown. Therefore, due to variations in the parts conveyance speed, a certain amount of deviation is likely to occur between the timing at which the parts reach the airflow blowing position and the timing at which the airflow is blown. If the blowing time of the airflow is lengthened, there is an increased possibility that even if the conveyance density is high, parts that are not defective before and after are removed, so that it is difficult to reliably select parts.
[0041]
In the present embodiment, the airflow is stopped in anticipation of the arrival timing of the non-defective part P. In this case, when the airflow control valve 135 is closed, the blowing of the airflow from the airflow blowing port 131W onto the conveyance path 131X is substantially stopped within a short time. This is because the specific gravity of the gas is light and the inertia is small, and when the pressure on the upstream side decreases, the flow velocity on the downstream side decreases rapidly due to air resistance. This is because gas loses propulsion. On the other hand, when controlling the start point of airflow spraying as in the prior art, since the gas is a compressible fluid, even if the airflow control valve 135 is opened, it takes time to increase the air pressure in the vicinity of the airflow spray port 131W. Therefore, a certain amount of time is required until the airflow from the airflow outlet 131W substantially starts.
[0042]
Therefore, in the method of the present embodiment, the airflow is temporarily stopped only at the time when the non-defective product passes, so that defective products can be more reliably removed from the transport path 131X than in the past, and the airflow Since the response speed of the control can be greatly increased as compared with the conventional method, the non-defective product can be surely passed therethrough. As a result, it becomes possible to greatly improve the sorting accuracy as compared with the conventional component sorting, and there is no need to sort a plurality of parts as shown by the dotted line in FIG.
[0043]
In the case of the present embodiment, the airflow blowing is resumed when the origin sensor detects the passage of the next part P determined to be defective in the second state. Since the air flow remains stopped until it is received, the non-defective product can be passed more reliably. In particular, in the present embodiment, since the control signal C is switched with reference to the rising edge of the origin signal S, the blowing of airflow can be resumed early on the next component P. This is because, for example, when there is another part P between the part P determined to be non-defective and the next detected part P, that is, continuously in contact with the part P determined to be non-defective. When the other parts P pass through, when the other parts P are not detected by the origin sensor, it becomes possible to blow an air current against the other parts P, and the other parts P ( There is an advantage that the probability of eliminating whether the product is non-defective or defective is high.
[0044]
Furthermore, in this embodiment, since the control signal C is switched after the delay time Td from the falling edge of the origin signal S, the switching error of the control signal C due to chattering of the origin signal S (the actual passing state of the component P) The control signal C is switched earlier than that, and the occurrence of a mistake that the airflow stops earlier can be prevented.
[0045]
In the present embodiment, since the non-defective product is controlled in order to pass the non-defective product as described above, the defective product can be surely eliminated, and the control of the stop time of the air flow is as described above. Thus, since the response is fast, there is an advantage that it is difficult to cause trouble even if the distance between the airflow control means such as the airflow control valve 135 and the airflow blowing port 131W is increased.
[0046]
FIG. 2 is a timing chart showing a control mode different from the above embodiment. In this control mode as well, basically, airflow is normally blown in the same manner as in the above embodiment, and the airflow is stopped only when a non-defective product in the first state arrives. Similarly to the above, the resumption of the airflow blowing is performed after the variable time T2 according to the origin signal S resulting from the passage of the next part P determined to be defective in the second state, or the next When the part P does not arrive, it is performed after the elapse of a predetermined time T0 similar to the above. However, this control mode is different from the above embodiment in that the control signal C is switched on the basis of the falling edge of the origin signal S corresponding to the next component P. That is, as soon as the origin signal S falls, the control signal C is reversed and the blowing of airflow is resumed.
[0047]
In this control mode, after passing the pass / fail component P, the next component P determined to be defective is detected by the origin sensor 131Z, and at the timing when the tail of the component P goes out of the detection range, Airflow blowing is resumed. In this control mode, in the same situation, the variable time T2, which is a parameter for determining the airflow stop period, is longer than in the above-described embodiment (variable time T1). It is possible to pass non-defective products, and the probability of eliminating non-defective products can be reduced.
[0048]
In the above embodiment, the origin sensor 131Z has a function of individually detecting the component P and associating the determination result of the determination sensor 131Y with each component, and constitutes a part of the determination unit. It also constitutes a component passage detection means for measuring the passage timing of P. However, in this case, it may be necessary to set a timing for stopping the airflow with respect to the origin signal S of the origin sensor 131Z by a timer or the like. On the other hand, as shown in FIG. 3, a dedicated timing sensor 131V for measuring the passage timing of the component P may be provided. In this case, the air flow may be controlled to stop according to the detection timing of the timing sensor 131V as the component passage detection means. Since the detection position of the timing sensor 131V is provided at a position closer to the airflow blowing port 131W than the origin sensor 131Z, the airflow stop period can be further shortened, and the selection accuracy can be further improved. it can. The position of the timing sensor 131V in the illustrated example is suitable when the control signal C is reversed when the timing sensor 131V starts to detect the component P (for example, by the rising edge of the timing signal) and the airflow is stopped. Shows the position.
[0049]
Thus, when the timing sensor 131V is provided separately from the origin sensor 131Z, the airflow stop timing is not determined based on the origin signal S as shown in FIGS. 1 and 2, but the output of the timing sensor 131V. Is determined by the timing signal. On the other hand, the origin signal S of the origin sensor 131Z can be used for recognizing and determining individual components P in association with (in association with) the discrimination signal D. Further, the origin signal S of the origin sensor can be used as a trigger for restarting the blowing of the airflow after the temporary stop of the airflow.
[0050]
In addition, the components selection apparatus and components supply apparatus of this invention are not limited only to the above-mentioned illustration example, Of course, various changes can be added within the range which does not deviate from the summary of this invention. For example, in the above-described embodiment, the vibration-type component supply device and the component sorting device applied thereto have been described. However, the present invention is limited to such a vibration-type component supply device and the one applied thereto. is not. In the above embodiment, the quality of a component is determined based on the quality of the component posture. However, the quality of the component is selected based on other criteria other than the posture, such as the shape and dimensions of the component and other appearance defects. You may make it do. Further, it can be used not only for the quality of parts but also for selecting parts that are generally in different states such as the first state and the second state, such as simply selecting two kinds of parts.
[0051]
【The invention's effect】
As described above, according to the present invention, it is possible to reduce component selection mistakes. In particular, the probability of passing a defective product as it is can be reduced.
[Brief description of the drawings]
FIG. 1 is a timing chart showing a control mode in an embodiment of a component selection device and a component supply device according to the present invention.
FIG. 2 is a timing chart showing another control mode in the embodiment of the component selection device and the component supply device according to the present invention.
FIGS. 3A and 3B are a partial inner surface view (a) and a partial cross-sectional view (b) showing a structure in the component selection unit in the embodiment.
FIG. 4 is a schematic configuration plan view showing an overall configuration of a component supply apparatus.
FIG. 5 is an explanatory diagram schematically showing a sorting structure in a conventional component sorting apparatus, and a timing chart showing a control mode of the sorting structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 ... Part supply apparatus, 110 ... Bowl type feeder, 120 ... Linear feeder, 130 ... Part selection apparatus, 131 ... Part selection unit, 132 ... Sensor amplifier, 133 ... Control device, 134, drive circuit, 135, air flow control valve, 136, gas supply unit, 131X, transport path, 131Y, discrimination sensor, 131Z, origin sensor, 131A,. Sorting block, 131B ... sensor plate, 131C ... air flow control plate, 131V ... timing sensor, 131W ... air flow outlet

Claims (6)

Determining means for determining a state of a component moving on the conveyance path; and component selection means for allowing the component in the first state to pass as it is on the conveyance path and blowing an air current to the component in the second state; in a normal state is configured to blow the air flow to the transport path, and air flow control means for temporarily stopping the air flow when the component is determined from the first state to pass by the determining means, wherein Component passage detection means for knowing the passage timing of the component determined as the first state by the determination means;
The airflow control means stops the airflow according to the passage timing of the component determined to be the first state, and next determines the second state immediately after the component determined to be the first state. When the next part arrives, the air current blowing is resumed before the next part arrives according to the passage timing of the next part . If the next part does not arrive within a predetermined time set in advance, the air flow control means restarts the blowing of the air flow when the predetermined time elapses, and sets the second state before the predetermined time elapses. 2. The component sorting apparatus according to claim 1 , wherein when the determined next component arrives, the blowing of the air current is resumed when a variable time that changes according to a passage timing of the next component elapses . The component selection apparatus according to claim 1, wherein the component passage detection unit includes an origin sensor that constitutes a part of the determination unit . A component supply apparatus that moves and supplies components along a conveyance path,
A component aligning means for aligning the parts and sending them on the transport path, a determination means for determining the state of the parts moving on the transport path, and passing the parts in the first state on the transport path as they are, A part sorting unit that blows and sorts the air current on the part in two states, and is configured to blow the air stream onto the conveyance path in a normal state, and the part that is determined to be in the first state by the determination unit passes. An air flow control means for temporarily stopping the air flow when
Component passage detection means for knowing the passage timing of the component determined as the first state by the determination means;
The airflow control means stops the airflow according to the passage timing of the component determined to be the first state, and next determines the second state immediately after the component determined to be the first state. When the next part arrives, the air current blowing is resumed before the next part arrives according to the passage timing of the next part . If the next part does not arrive within a predetermined time set in advance, the air flow control means restarts the blowing of the air flow when the predetermined time elapses, and sets the second state before the predetermined time elapses. The component supply device according to claim 4, wherein when the determined next component arrives, the blowing of the airflow is resumed when a variable time that changes in accordance with the passage timing of the next component has elapsed . The component supply apparatus according to claim 4, wherein the component passage detection unit includes an origin sensor that constitutes a part of the determination unit .

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