JP4449186B2 - Component detection method and component mounter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component detection method applied to detect a defect in a taping state including the presence or absence of a component when a component is delivered from a component supply unit to a mounting unit in a component mounting machine such as an electronic component insertion mounting machine. And a component mounter.
[0002]
[Prior art]
An example of a component presence / absence detection apparatus in a conventional electronic component insertion / mounting machine will be described with reference to FIGS. 3 and 21 to 24.
[0003]
In FIG. 3, reference numeral 1 denotes a taping component, which is configured by holding both ends of leads of a large number of components 5 with a tape 1a. FIG. The process of delivering to the mounting means 6 is shown. As shown in FIG. 3 (a), the tape 1a of the taping component 1 and the lead wires of the component 5 set in the component supply means 4 are transferred by the chuck 6a of the mounting means 6 as shown in FIG. 3 (b). After the gripping, the taping component 1 is pulled out by one pitch by moving the chuck 6a back and forth, and then the tape 1a is cut by the tape cutter 7 as shown in FIG. Part 5 is delivered.
[0004]
Conventionally, in this process, as shown in FIG. 21, a sensor unit 22 composed of a projector and a light receiver is disposed in the tape cutter unit 21 to detect the presence or absence of the component 5, and as shown in FIGS. In addition, the presence or absence of the part 5 is determined by recognizing only the main body of the part 5 before the part 5 is pulled out by the chuck 6a. FIG. 22 shows a state where there is a part, and FIG. 23 shows a state where a part has run out.
[0005]
[Problems to be solved by the invention]
However, the conventional configuration has a problem that it is impossible to detect a difference between whether the component 5 is normally supplied, whether an abnormality has occurred, or whether a component has run out. For example, even if the lead of the component 5 is taped in an inclined state, the sensor unit 22 detects the component 5 and determines that there is a component, as shown in FIG. There was a problem that the case where the delivery was not performed occurred.
[0006]
For this reason, although there is no actual component failure, a component failure may be erroneously detected, a wasteful mounting failure may occur due to a defective taping state, or the delivery of the component 5 may remain abnormal. There are problems such as causing damage to the mechanical mechanism.
[0007]
In view of the above-described conventional problems, an object of the present invention is to provide a component detection method and a component mounter that can detect defects in the taping state including the presence or absence of each component of the taping component.
[0008]
[Means for Solving the Problems]
Parts detection method of the present invention is a component detecting method for detecting a failure of the taping, including the presence or absence of each part of the taping component comprising the end portions of the plurality of component leads held in the tape, and searchlights unit It consists of a photoreceiver unit and detects the whole image of each part of the taping component by a wide-angle sensor that can detect a wide- angle range, and a plurality of optical axes emitted from the projector unit are blocked by the component and its lead As a result, the amount of light received by the receiver unit is the amount of light received when the entire component including the lead wire is blocked, when only the component or only the lead wire is blocked, or when not blocked. by but determines small, medium, the supply state of the component by varying the large, is to detect the overall picture of the part, it is fixed to taping Because it accurately identify the state of the components are wasted parts replacement and mounting failure caused by failure of the taping, the occurrence of mounting mechanism of the damage can be prevented.
[0009]
The component mounter of the present invention is a component mounter that delivers and mounts each component of the taping component mounted on the component supply unit to the mounting unit, and each component of the taping component mounted on the component supply unit. It is equipped with a whole image detection means for detecting the whole image, and the whole image detection means detects the whole image of the part, so that the state of the part fixed to the taping can be accurately identified and the presence or absence of the part can be identified. If there is a defect in the taping state, it is possible to determine the state of the component and stop the mounting before moving the component to the mounting process. It is possible to prevent the occurrence of defective mounting and damage to the mounting mechanism.
[0010]
The whole image detection means is composed of a wide-angle sensor , and the wide-angle sensor is composed of a projector unit and a light receiver unit, and a plurality of optical axes emitted from the projector unit are blocked by components and their lead wires. The amount of light received by the receiver unit is small, medium when the entire component including the lead wire is blocked, when only the component, only the lead wire is blocked, or not blocked. The supply state of the component can be determined by changing to large .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, the component insertion mounting machine of the 1st Embodiment of this invention is demonstrated with reference to FIGS.
[0012]
1 and 2 showing the component supply means in the component insertion / mounting machine, 1 is a taping component in which both ends of leads of a large number of components 5 are held by tape 1a, 2 is a component box in which the taping component 1 is stored, Reference numeral 3 denotes a cartridge including a support portion for the component box 2 and a supply guide for the drawn taping component 1. Reference numeral 4 denotes a component supply means on which a taping component 1 is set as shown in FIG.
[0013]
FIG. 3 shows a process of delivering the component 5 from the component supply means 4 on which the taping component 1 is set to the chuck 6 a of the mounting means 6. 7 is a tape cutter. By grasping the tape 1a of the taping component 1 and the lead wire of the component 5 set in the component supply means 4 by the chuck 6a and moving the chuck 6a back and forth, the component 5 is pulled out by one pitch. Thereafter, the component 5 is delivered to the mounting means 6 by cutting the tape 1 a with the tape cutter 7.
[0014]
In the present embodiment, before pulling out the component 5 by the chuck 6a, the entire image of the component 5 including the state with the lead is detected, and the taping state of the component 5 including the presence or absence of the component 5 is detected.
[0015]
FIG. 4 includes a projector unit 8 and a light receiver unit 9, in which the taping state of the component 5 is detected by a sensor unit 10 as a wide angle sensor capable of detecting a wide angle range. A plurality of light projectors 8 and light receivers 9 are built in the unit 9 so as to face each other in a line.
[0016]
In the normal state shown in FIG. 4, a plurality of optical axes emitted from the projector unit 8 of the sensor unit 10 are blocked by the component 5 and its lead wires, and the amount of received light received by the light receiver unit 9 becomes small. In this way, when a plurality of optical axes emitted from the projector unit 8 are blocked by the component 5 and its lead wires, the amount of light received by the light receiver unit 9 is blocked by the entire component 5 including the lead wires. The amount of received light changes to small, medium, and large when the light is blocked only by the components and the lead wires, respectively. Therefore, the supply state of the component 5 can be determined by using this.
[0017]
FIG. 5 shows a case where a defect has occurred in the taping state of the electronic component. Since the lead wires are slanted, the optical axis of the projector unit 8 is more than the case where the component supply shown in FIG. 4 is normally performed. Since it cannot be blocked by the lead wire 5, the amount of light received by the photoreceiver unit 9 slightly increases and the amount of received light becomes medium.
[0018]
FIG. 6 shows a case where the component 5 is cut out, and since there is no component that blocks the optical axis of the projector unit 8, the amount of light received by the light receiver unit 9 increases most, and the amount of received light increases.
[0019]
FIG. 7 shows a hardware configuration of a component detection apparatus that determines a component supply state by the sensor unit 10. A main controller 11 includes an input unit 12 and a control unit 13. The sensor unit 10 divides the signal into a signal a when the amount of received light is medium and a signal b when the amount of received light is large, and transmits it to the input unit 12 of the main controller 11. If the amount of received light is small, the sensor unit 10 determines that there is no detection and the signal to the main controller 11 is not transmitted. Then, the controller 13 determines the operation of the apparatus in the next process depending on whether the received signal is a or b.
[0020]
FIG. 8 shows a method for controlling the operation of the apparatus based on a signal input from the sensor unit 10. First, it is confirmed whether or not a signal is input from the sensor unit 10, and if there is no input, the mounting is continued as it is. When there is an input, if the signal a is medium, depending on the amount of received light, it is determined that the supply state of the electronic component is abnormal, the mounting operation is stopped, and an abnormality occurs in the electronic component supply unit. Is displayed by a warning message to prompt the operator to repair the taping component 1. When the amount of light received is signal b, it is determined that the component is out, the mounting operation is stopped, the component supply unit is moved to the component replacement position, and a warning message is displayed indicating that the component is out, Encourage workers to replace parts.
[0021]
In the description of the present embodiment, an example in which the sensor unit 10 is configured by a transmission type sensor including the projector unit 8 and the light receiver unit 9 has been described. However, the present invention can be similarly implemented when a reflection type sensor or other sensors are used. It is.
[0022]
(Second Embodiment)
Next, a component insertion mounting machine according to a second embodiment of the present invention will be described with reference to FIGS.
[0023]
In FIG. 9, 14 is a recognition camera, 15 is a projector for a recognition camera, and shows a state in which the electronic component 5 is normally supplied. FIG. 10 shows the configuration of the component detection apparatus using the recognition camera 14. Reference numeral 16 denotes a recognition controller. The main controller 11 includes an input / output unit 17, a storage unit 18, and a control unit 13.
[0024]
In the above configuration, all the components to be mounted are sequentially imaged by the recognition camera 14 as a pre-preparation before component mounting. The shape of the imaged part is captured by the recognition controller 16 as image data. The captured image data is binarized, and the binarized data of each point of the upper lead part, the part, and the lower lead part of the part shape is stored in the storage unit 18 in the main controller 11 as a part of the binarized data check point. Save as data for each part.
[0025]
At the time of actual mounting, the recognition camera 14 captures a part, compares the captured part image data with the part data for each part in the storage unit 18, and determines whether or not the binarization level matches. Each of the binarized data checkpoints is discriminated, and the taping state of the component including the presence / absence of the component is determined based on the ratio of the checkpoints that match all the checkpoints.
[0026]
In the state of FIG. 9 in which the component 5 is normally supplied, the checkpoints are almost completely matched. FIG. 11 shows a case where an abnormality has occurred in the taping state of the part 5. Since the leads are slanted, only 30% of the binarized data checkpoints match the binarized level of the part data. . FIG. 12 shows a case where a part breakage occurs. Since there is no part, it does not match the binarization level of the part data at all, and the same ratio is also 0%.
[0027]
Thus, when the match rate of checkpoints is 90% or more, the signal is not transmitted from the recognition controller 16 to the main controller 11, and the mounting is continued as it is. When the values are the same between 10% and 90%, the signal A is transmitted from the recognition controller 16 to the main controller 11 as an abnormality of the component supply unit. If it is less than 10%, the signal B is transmitted as a component shortage.
[0028]
FIG. 13 shows a method for controlling the operation of the apparatus using an input signal from the recognition controller 16. First, it is confirmed whether or not a signal is input from the recognition controller 16, and if there is no input, the mounting is continued as it is. When there is an input, in the case of a signal A in which the same proportion of the check points of the binarization level is 10% to less than 90%, it is confirmed that the mounting operation is stopped and an abnormality has occurred in the component supply unit. A warning message is displayed to prompt the operator to repair the taping component 1. In the case of signal B with the same ratio being less than 10%, it is determined that the component is out, the mounting operation is stopped, the component supply unit is moved to the component replacement position, and a warning message indicates that the component is out. Display and urge the operator to replace parts.
[0029]
In the example of this embodiment, the binarization level comparison between the part data and the image data being mounted is 90% or more, 10% to less than 90%, and less than 10%. Can be changed.
[0030]
In the above description, the example in which the data of the recognition camera 14 is converted into the binarized level has been described. However, the present invention can be similarly implemented when other determination processes are used.
[0031]
(Third embodiment)
Next, a component insertion / mounting machine according to a third embodiment of the present invention will be described with reference to FIGS.
[0032]
FIG. 14 shows a configuration of a component detection apparatus using a plurality of sensor units 10a each composed of a single projector 8a and light receiver 9a, and shows a state in which the component 5 is normally supplied. In order to confirm the shape of the component from the side of the taping component 1, a plurality of sensor units 10a are installed vertically for detecting the component, for detecting the lead above the component, and for detecting the lead below the component. In order to confirm whether or not the shape of the part protrudes from the line on the tape from directly above the taping part 1, a pair of parts are installed on both sides for detection of the tape left side and right side of the tape. The pair of sensor units 10a on both sides is configured to output an inversion signal.
[0033]
When all of these sensor units 10a detect the component 5 during mounting, the mounting is continued, but when any one of the sensor units 10a is not detected, the supply state of the component 5 The mounting operation is stopped and the tape is repaired. When all of the sensor units 10a are not detected, it is determined that the parts are out of operation, and mounting stop and parts replacement work are performed.
[0034]
FIG. 15 shows a configuration of a three-dimensional component detection apparatus using a plurality of sensor units 10a. The results detected by each of the plurality of sensor units (1 to n) 10 are transmitted to the input unit 12 of the main controller 11. A signal is transmitted as it is from the input unit 12 to the control unit 13, and the control unit 13 confirms how many sensor units 10 a among the plurality of sensor units are detected, and determines the operation of the apparatus in the next process based on the result. To do.
[0035]
16 to 18 show a case where a defect occurs in the taping state of the electronic component. In FIG. 16, since the lead is inclined, the component detection sensor is not detected. In FIG. 17, since the lead protrudes from the line on the tape, the tape left side detection sensor is not detected. 18 is an A arrow view of FIG. 17, 19 is a tape left side detection sensor range, 20 is a tape right side detection sensor range, and when the normal state of FIG. When the abnormality shown in FIG. 18B, the part blocks the tape left detection range. FIG. 19 shows a case where a component has run out, and all of the sensor units 10a are in an undetected state.
[0036]
FIG. 20 shows a method for controlling the operation of the apparatus based on the results of input signals of a plurality of sensor units 10a. First, it is confirmed whether or not all of the plurality of sensor units 10a are detected. If all the sensor units 10a are detected, the mounting is continued. When there is no detection, a determination is made based on whether all the sensor units 10a have not been detected. When all the sensor units 10a are not detected, it is determined that the parts are out, the mounting operation is stopped, the parts supply unit is moved to the parts replacement position, and the fact that the parts are out is displayed by a warning message. Encourage workers to replace parts.
[0037]
If all are not detected, it is determined that the supply state of the component 5 is abnormal, and a warning message is displayed to indicate that the mounting operation is stopped and the component supply unit is abnormal, and the taping component 1 is repaired to the operator. Prompt.
[0038]
In the description of the present embodiment, an example in which the sensor unit 10a is configured by a transmissive sensor has been described. However, the present invention can be similarly applied when a reflective sensor or another sensor is used.
[0039]
【The invention's effect】
According to the component detection method of the present invention, in the component detection method for detecting defects in the taping state including the presence or absence of each component of the taping component as described above, the entire image of each component of the taping component is detected by the wide angle sensor. it makes since to detect the overall picture parts products, can accurately identify the state of the component that is fixed to the tape, unnecessary component replacement work and mounting failure caused by failure of the taping, mounting mechanism The occurrence of damage to the parts can be prevented.
[0040]
The component mounter of the present invention is a component mounter that delivers and mounts each component of the taping component mounted on the component supply unit to the mounting unit, and each component of the taping component mounted on the component supply unit. Since the whole image detection means for detecting the whole image is provided, the whole image detection means can detect the whole image of the part and accurately identify the state of the part fixed to the tape, including the presence or absence of the part. If there is a defect in the taping state, it is possible to judge the state of the component before moving the component to the mounting process and stop the mounting, and wasteful parts replacement work and mounting defects caused by a defective taping state The occurrence of damage to the mounting mechanism can be prevented.
[Brief description of the drawings]
FIG. 1 is an overall perspective view and a partial detailed perspective view of a component supply unit of a component mounter according to a first embodiment of the present invention.
FIG. 2 is a detailed view of a main part of the component supply means in the same embodiment.
FIG. 3 is an explanatory diagram of a delivery process from a component supply unit to a mounting unit in the same embodiment;
FIG. 4 is a perspective view of a normal detection state in the component detection apparatus of the embodiment.
FIG. 5 is a perspective view of a detection state when the taping state is abnormal in the embodiment;
FIG. 6 is a perspective view of a detection state when a component is out in the embodiment.
FIG. 7 is a configuration diagram of a component detection apparatus in the same embodiment.
FIG. 8 is a flowchart showing a control operation of the apparatus based on component detection in the embodiment.
FIG. 9 is a perspective view of a normal detection state in the component detection apparatus according to the second embodiment of the present invention.
FIG. 10 is a configuration diagram of a component detection apparatus in the same embodiment.
FIG. 11 is a perspective view of a detection state when the taping state is abnormal in the embodiment;
FIG. 12 is a perspective view of a detection state when a component is out in the embodiment.
FIG. 13 is a flowchart showing a control operation of the apparatus based on component detection in the embodiment.
FIG. 14 is a perspective view of a normal detection state in the component detection apparatus according to the third embodiment of the present invention.
FIG. 15 is a configuration diagram of a component detection apparatus according to the embodiment.
FIG. 16 is a perspective view of a detection state when the taping state is abnormal in the embodiment;
FIG. 17 is a perspective view of a detection state when another taping state is abnormal in the embodiment;
18 is an explanatory diagram of a normal state and an abnormal state when viewed from the direction A in FIG. 17;
FIG. 19 is a perspective view of a detection state when parts are out in the embodiment;
FIG. 20 is a flowchart showing a control operation of the apparatus based on component detection in the embodiment.
FIG. 21 is a perspective view showing an arrangement state of a component detection device and details of a main part thereof in a conventional example.
FIG. 22 is a perspective view of a normal detection state in the conventional example.
FIG. 23 is a perspective view of a detection state when parts are out of the conventional example.
FIG. 24 is a perspective view showing an undetected state when the taping state is abnormal in the conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Taping component 4 Component supply means 5 Component 6 Mounting means 10 Sensor unit (wide angle sensor)
10a Sensor unit 11 Main controller 13 Control unit 14 Recognition camera 16 Recognition controller 18 Storage unit

Claims (2)

A component detection method for detecting defects in the taping state including the presence or absence of each component of a taping component that is formed by holding both ends of the leads of a large number of components with tape, comprising a projector unit and a receiver unit, and has a wide angle range. The whole image of each part of the taping part is detected by a wide angle sensor capable of detecting the defect, and the defect is detected in a state where the part is fixed ,
When the plurality of optical axes emitted from the projector unit are blocked by the component and its lead wires, the amount of light received by the light receiver unit is blocked only by the components when the entire component including the lead wires is blocked. A component detection method , wherein the supply state of the component is determined by changing the amount of received light as small, medium, or large when blocked by only a lead wire . Taping mounted on the component supply unit in a component mounter that delivers and mounts each component of the taping component that is formed by holding both ends of the leads of a large number of components mounted on the component supply unit to the mounting unit. Comprising a whole image detection means for detecting the whole image of each part of the part,
The overall picture detecting means, Ri consists wide sensors, and by wide-angle sensor which consists photodetector unit and the projector unit, a plurality of the optical axis emitted from the projector unit is blocked by the parts and the lead wire The amount of light received by the receiver unit is small, medium when the entire component including the lead wire is blocked, when only the component, only the lead wire is blocked, or not blocked. parts products mounter you characterized that you determine the supply state of the component by varying large.

Images