JP4187387B2 - Component discriminating apparatus and component mounting apparatus using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component mounting apparatus for manufacturing a flat panel display or the like typified by a liquid crystal panel, and more particularly to a component determination apparatus that determines the type of electronic component mounted on a substrate.
[0002]
[Prior art]
In general, electronic parts (FPC (flexible printed circuit), COF (chip on film), TCP (tape carrier package) formed in a film form are used as component mounting apparatuses for manufacturing flat panel displays such as liquid crystal panels. And the like) are mounted on a glass substrate. Examples of such a component mounting apparatus include an electronic component supply apparatus, an adhesive member attaching apparatus, a crimping apparatus, a substrate supply / discharge apparatus, and a conveyance apparatus that conveys a substrate between them. In such a component mounting apparatus, first, an electronic component is supplied from an electronic component supply device. Next, an anisotropic conductive film tape (ACF) is affixed on the lead of an electronic component with an adhesive member affixing device, and then transferred to a crimping device. On the other hand, in the crimping device, the glass substrate supplied from the substrate supply / discharge device is positioned by the transfer device, and the relative positional deviation between the electronic component and the glass substrate is detected using a camera, and is detected. After the misalignment is corrected, the lead of the electronic component is crimped onto the electrode of the glass substrate via the ACF using a thermocompression bonding tool. When the mounting of the electronic component on the glass substrate is completed in this way, the mounted glass substrate is carried out to the next process by the substrate supply / discharge device, and a new glass substrate is supplied to the crimping device.
[0003]
In such a component mounting apparatus, in general, there are a plurality of types of electronic components mounted on a single glass substrate, and it is easy to mistake the types of electronic components when putting electronic components into the component mounting device. As a result, the product yield is likely to decrease.
[0004]
In order to solve such a problem, a component discriminating apparatus that discriminates the type of electronic component mounted on a glass substrate has been conventionally used. FIG. 8 is a diagram showing an example of a conventional component discriminating apparatus. As shown in FIG. 8, the conventional component discriminating apparatus includes a sensor unit 30 in which a plurality of presence / absence detection sensors 31 are arranged in a grid pattern, and based on presence / absence detection signals obtained from the presence / absence detection sensors 31. The overall shape of the electronic component 20 is grasped, and thereby the type of the electronic component 20 mounted on the glass substrate is determined.
[0005]
[Problems to be solved by the invention]
However, the above-described conventional component discriminating apparatus has a problem that a plurality of presence / absence detection sensors 31 are required to discriminate the type of the electronic component 20 and the cost is increased. In addition, since it is necessary to finely adjust the position of the presence / absence detection sensor 31 in accordance with the overall shape of the electronic component 20, particularly when a plurality of types of electronic components 20 are mounted, such sensor position adjustment is performed. There is a problem that it takes a lot of time to work.
[0006]
The present invention has been made in view of the above points, and provides a component discriminating apparatus capable of easily discriminating the types of electronic components mounted on a substrate and a component mounting apparatus using the same. With the goal.
[0007]
[Means for Solving the Problems]
The present invention provides, as a first solution, a component discriminating apparatus that discriminates the type of electronic component mounted on a substrate, a holding mechanism that holds the electronic component, and an electronic component held by the holding mechanism. A discrimination sensor that detects a shape; a drive unit that changes a relative positional relationship between the holding mechanism and the discrimination sensor; a processing device that discriminates the type of electronic component based on a detection result of the discrimination sensor; A storage device that accumulates discrimination positions used for component discrimination for each type, and the processing device switches the discrimination position for each type of electronic component based on the stored contents of the storage device. It said determination by controlling the driving unit to detect the shape of the predetermined portion of the electronic component by the sensor at the determination position, especially that the position to determine a position to switch the electronic component Providing part determination device according to.
[0008]
In the present invention, the storage device accumulates detection patterns for discrimination used for discrimination of electronic components for each product type, and the processing device performs product types of electronic components based on the stored contents of the storage device. It is preferable to switch the detection pattern for determination every time, and determine the type of electronic component based on the switched detection pattern for determination and the detection result by the determination sensor. Furthermore, it is preferable that the discrimination sensor detects a shape of a predetermined outer edge portion of the electronic component at the discrimination position.
[0009]
As a second solution, the present invention provides a component mounting apparatus for mounting electronic components on a substrate, a component determination device for determining the type of electronic component mounted on the substrate, and a determination result by the component determination device. A control device that controls the mounting operation of the electronic component based on the electronic component, the component determination device includes a holding mechanism that holds the electronic component, and a determination sensor that detects the shape of the electronic component held by the holding mechanism, , A drive unit that changes the relative positional relationship between the holding mechanism and the discrimination sensor, a processing device that discriminates the type of electronic component based on a detection result of the discrimination sensor, and an electronic component discrimination A storage device that accumulates the discrimination position for each type, and the processing device switches the discrimination position for each type of electronic component based on the stored contents of the storage device. The determination and controls the driving unit to detect the shape of the predetermined portion of the electronic component by the sensor at a different location, to provide a component mounting apparatus characterized by positioning the determination position is switched to the electronic component.
[0010]
According to the present invention, the relative positional relationship between the holding mechanism and the discrimination sensor is changed, and the shape of the predetermined part of the electronic component is detected at the preset discrimination position to discriminate the product type. Therefore, the number of sensors required for determination can be reduced, and fine adjustment of the sensor position can be eliminated, and the type of electronic component mounted on the substrate can be easily determined. Further, according to the present invention, when the type of electronic component mounted on the substrate is switched by accumulating the discrimination position used for discrimination of the electronic component or the detection pattern for discrimination for each type by the storage device. Even so, it is only necessary to input data corresponding to the product name from the operation panel or the like, and the time required for the product switching operation can be reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 are diagrams for explaining an embodiment of a component discriminating apparatus according to the present invention. It should be noted that the component identification device according to the present embodiment is used by being incorporated in a component mounting device that mounts electronic components on a glass substrate.
[0012]
As shown in FIG. 1, the component determination apparatus according to the present embodiment includes a transfer stage (holding mechanism) 15 on which an electronic component 20 is placed, and an electronic component 20 placed (held) on the transfer stage 15. A discrimination sensor 10 that detects the shape and a processing device 13 that discriminates the type of the electronic component 20 based on the detection result of the discrimination sensor 10 are provided.
[0013]
Among these, the transport stage 15 has a plurality of abutting blocks 15a for positioning the electronic component 20 (see FIG. 2), and suction means (non-removal) for suction-fixing the electronic component 20 on the upper surface of the transport stage 15 is provided. As shown). A drive unit 18 that moves the transfer stage 15 in the X-axis, Y-axis, and θ directions is provided below the transfer stage 15, and controls the discrimination sensor 10 of the transfer stage 15 under the control of the processing device 13. By changing the position, the shape of a predetermined portion of the electronic component 20 can be detected by the discrimination sensor 10 at a preset discrimination position.
[0014]
The discrimination sensor 10 has a pair of sensors (a first sensor 11 and a second sensor 12) that detect the presence or absence of the electronic component 20 by using reflection of light from the electronic component 20, and a predetermined outer edge of the electronic component 20 The shape of the part can be detected. Specifically, as shown in FIGS. 2 (a) and 2 (b), the first sensor 11 and the second sensor 12 are respectively located at two points located inside and outside a predetermined outer edge portion of the electronic component 20, respectively. The shape of the part can be detected by detecting the presence or absence of the electronic component 20. 2A and 2B, reference numerals 11a and 12a denote sensor lights projected from the first sensor 11 and the second sensor 12, respectively. Note that both the first sensor 11 and the second sensor 12 are used while being fixed to an apparatus housing or the like, but their fixing positions can be adjusted in the X direction, the Y direction, and the Z direction.
[0015]
The processing device 13 includes a discrimination position used for discrimination of the electronic component 20 and a detection pattern for discrimination (a pattern of a detection signal (either an ON signal or an OFF signal) of the discrimination sensor 10 to be obtained at each discrimination position). Are connected to the operation panel 16 for displaying instructions to the operator and receiving instructions from the operator. Then, the processing device 13 switches the discrimination position for each type of the electronic component 20 based on the stored contents of the storage device 14, and detects the shape of the predetermined portion of the electronic component 20 by the discrimination sensor 10 at the switched discrimination position. Thus, the transfer stage 15 can be moved via the drive unit 18. Further, the processing device 13 can determine the type of the electronic component 20 based on the switched detection pattern for determination and the detection result of the determination sensor 10.
[0016]
FIG. 3 to FIG. 6 are diagrams for explaining an example of the discrimination position of the electronic component to be discriminated and the detection pattern for discrimination. In this case, (1) rectangular cultivar A, (2) cultivar B slightly smaller than cultivar A, (3) cultivar C larger than cultivar A and partially missing the lower right part, and (4) cultivar. A description will be given by taking four types of electronic components of type D larger than A and partially lacking the lower left portion as an example.
[0017]
Here, FIGS. 3A and 3B are diagrams showing the discrimination positions and discrimination detection patterns of the electronic components of type A. FIG. As shown in FIG. 3A, the outer edge portion at the upper right of the electronic component is used as the discrimination position of the electronic component of the type A, and the first sensor 11 (sensor light 11a) and the second point on the inner and outer points are used. It detects with the sensor 12 (sensor light 12a). As a result, as shown in FIG. 3B, when the electronic component of type A is discriminated, the detection results of the first sensor 11 and the second sensor 12 are (ON, OFF), and other types are selected. It is distinguished from the detection pattern when it is determined. Note that the storage device 14 may store detection patterns when the types B, C, and D are determined at the determination positions of the electronic components of the type A. Similarly, for the electronic components of the types B, C, and D, the discrimination positions and the detection patterns for discrimination are shown in FIGS. 4 (a) (b), 5 (a) (b), and 6 (a). ) and can be determined as shown in (b). That is, for the electronic component of type B, the outer edge portion at the upper right of the electronic component can be used as the determination position (see FIG. 4A), and (ON, OFF) can be used as the detection pattern for determination ( (Refer FIG.4 (b)). For electronic parts of type C, the upper right outer edge portion of the electronic parts can be used as the discrimination position (see FIG. 5A), and (ON, OFF) can be used as the detection pattern for discrimination (FIG. 5). (See (b)). Furthermore, for electronic components of type D, the left outer edge portion of the electronic component can be used as a discrimination position (see FIG. 6A), and (OFF, ON) can be used as a detection pattern for discrimination (see FIG. 6). 6 (b)). FIG. 7 is a diagram showing discrimination positions and discrimination detection patterns stored in the storage device 14 corresponding to the four types of electronic components shown in FIGS. 3 to 6.
[0018]
Note that a control device 17 that controls the operation of the component mounting apparatus is connected to the processing device 13 so that the mounting operation of the electronic component 10 can be controlled based on the determination result by the processing device 13. Yes. Specifically, for example, when the processing device 13 determines that the type of the electronic component 20 is abnormal, the control device 17 stops the mounting operation or places the electronic component 20 determined to be abnormal in a disposal box or the like. The electronic component 20 determined to be abnormal can be marked with a defective mark and mounted so that the glass substrate on which the defective product is mounted can be easily discriminated. ing.
[0019]
Next, the operation of the present embodiment having such a configuration will be described.
[0020]
First, when the operation of the component mounting apparatus is started, the operator inputs the type name of the electronic component 20 to be mounted on the glass substrate from the operation panel 16. In response to such an input, the operation panel 16 issues a product type switching command to the processing device 13. Then, the processing device 13 receives the product type change command and reads out the determination position corresponding to the product type name input by the operator from the storage device 14.
[0021]
Thereafter, an instruction to insert the electronic component 20 is displayed on the operation panel 16. In response to such a display, the operator sucks and fixes the electronic component 20 on the transport stage 15. The electronic component 20 is positioned by an abutment block 15 a provided on the transport stage 15.
[0022]
Then, after the electronic component 20 is sucked and fixed onto the transfer stage 15, the operator inputs that the electronic component 20 has been completely inserted from the operation panel 16. Upon receiving such an input, the processing device 13 controls the drive unit 18 to move the transport stage 15 and detects the shape of the predetermined part of the electronic component 20 by the discrimination sensor 10 at a preset discrimination position. . At this time, the processing device 13 determines the type of the electronic component 20 based on a preset detection pattern for determination and the detection result of the determination sensor 10.
[0023]
If the input electronic component 20 is abnormal as a result of such determination, the processing device 13 makes an operator call via the operation panel 16 to instruct the operator to reinsert the electronic component 20. . At this time, the determination result by the processing device 13 is also given to the control device 17, and the component mounting device is thereby temporarily stopped. Further, as described above, the electronic component 20 determined to be abnormal is discharged to a disposal box or the like and returned to the input standby state by the control of the control device 17 as necessary, or the electronic component determined to be abnormal. An operation of attaching a defect mark to 20 is performed.
[0024]
On the other hand, if the input electronic component 20 is normal as a result of such determination, the processing device 13 determines that the electronic component 20 has been normally input, and sends a signal indicating that to the component mounting. It transmits to the control apparatus 17 which controls operation | movement of an apparatus. Upon receiving this signal, the control device 17 of the component mounting apparatus performs the following operations on the inserted electronic component 20, for example, various processes conventionally performed (using an adhesive member pasting device). A process of affixing an ACF on a lead of an electronic component, a process of detecting a relative misalignment between the electronic component and the glass substrate using a camera, a process of correcting the detected misalignment, and a glass using a thermocompression bonding tool The step of crimping the lead of the electronic component onto the electrode of the substrate via the ACF is sequentially performed.
[0025]
In addition, when switching the kind of electronic component 20 mounted on a glass substrate, the kind name of the new electronic component 20 to be mounted is input from the operation panel 16, and the same procedure as described above is repeated.
[0026]
As described above, according to the present embodiment, the conveyance stage 15 is moved relative to the discrimination sensor 10, the shape of the predetermined part of the electronic component 20 is detected at the preset discrimination position, and the product type is determined. Since the determination is made, the number of sensors required for the determination can be reduced, and fine adjustment of the sensor position can be eliminated, and the types of the electronic components 20 mounted on the substrate can be simplified. Can be determined. In addition, according to the present embodiment, the discrimination position used for discrimination of the electronic component 20 and the detection pattern for discrimination are accumulated for each product type by the storage device 14, so that the electronic component mounted on the glass substrate Even when 20 types are switched, it is only necessary to input data corresponding to the type name from the operation panel 16, and the time required for the type switching operation can be reduced.
[0027]
In the above-described embodiment, one electronic component 20 is placed on the transport stage 15 and the type of the electronic component 20 is determined. However, the present invention is not limited to this, and a plurality of electronic components 20 are disposed on the transport stage 15. The types of the plurality of electronic components 20 may be sequentially determined by placing them at the same time and changing the position of the transport stage 15 relative to the determination sensor 10 for each electronic component 20.
[0028]
In the above-described embodiment, the transport stage 15 is moved by the drive unit 18 under the control of the processing device 13. However, the present invention is not limited thereto, and the determination sensor 10 is moved by a drive unit (not shown). The determination sensor 10 and the transfer stage 15 may be moved together.
[0029]
Furthermore, in the above-described embodiment, two sensors (the first sensor 11 and the second sensor 12) are used as the discrimination sensor 10. However, the present invention is not limited to this, and a discrimination target can be obtained by moving one sensor. The presence / absence of the electronic component 20 may be detected at two points respectively positioned inside and outside a predetermined outer edge portion of the electronic component 20.
[0030]
Furthermore, in the above-described embodiment, the discrimination position and the detection pattern for discrimination accumulated in the storage device 14 are switched based on the input of the product name from the operation panel 16 by the operator. However, for example, when the order of loading the electronic components 20 is determined in advance, and the operator loads the electronic component 20 of the type specified in accordance with the loading instruction from the processing device 13 via the operation panel 16. When the input instruction is output to the operation panel 16 or when the input of the completion of the insertion of the electronic component 20 is received via the operation panel 16, the processing device 13 automatically sets the determination position and the detection pattern for determination. You may make it switch to.
[0031]
Furthermore, in the embodiment described above, the coordinates of the discrimination position on the transport stage 15 and the detection pattern for discrimination are stored in advance in the storage device 14 for each type of electronic component 20 to be discriminated. However, the present invention is not limited to this, and input may be made from the operation panel 16 each time depending on the type of electronic component 20 to be determined. Further, the contents stored in the storage device 14 may be set and changed from the outside by the operation panel 16. Further, the storage device 14 may be realized by a memory or the like in the processing device 13.
[0032]
In the above-described embodiment, the transport stage 15 is used as a holding mechanism for the electronic component 20. However, the present invention is not limited to this, and a transfer head or the like that holds the electronic component 20 by suction can be used. The type of the electronic component 20 held in the box may be determined during the transfer.
[0033]
In the above-described embodiment, a non-contact type sensor is used as the discrimination sensor 10, but the present invention is not limited to this, and a contact type sensor may be used.
[0034]
【The invention's effect】
As described above, according to the present invention, the relative positional relationship between the holding mechanism and the discrimination sensor is changed, and the shape of the predetermined part of the electronic component is detected at the preset discrimination position to discriminate its product type. Therefore, it is possible to reduce the number of sensors required for discrimination and eliminate the need for fine adjustment of the sensor position, and easily discriminate the types of electronic components mounted on the board. be able to.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining an embodiment of a component discrimination apparatus according to the present invention.
2 is a view for explaining the positional relationship between an electronic component and a discrimination sensor in the component discrimination device shown in FIG. 1; FIG.
FIG. 3 is a diagram for explaining a determination position and a detection pattern for determination of an electronic component (product type A) to be determined;
FIG. 4 is a diagram for explaining a determination position and a detection pattern for determination of an electronic component (product type B) to be determined;
FIG. 5 is a diagram for explaining a determination position and a detection pattern for determination of an electronic component (product type C) to be determined;
FIG. 6 is a view for explaining a determination position and a detection pattern for determination of an electronic component (product type D) to be determined;
7 is a diagram showing discrimination positions and discrimination detection patterns accumulated in a storage device corresponding to the four types of electronic components shown in FIGS. 3 to 6; FIG.
FIG. 8 is a diagram showing a conventional component discrimination device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Discriminating sensor 11 1st sensor 11a (1st sensor) Sensor light 12 2nd sensor 12a (2nd sensor) Sensor light 13 Processing apparatus 14 Memory | storage device 15 Conveyance stage 15a Abutting block 16 Operation panel 17 (Component mounting apparatus) Control unit 18 drive unit 20 electronic component

Claims (4)

In a component discriminating device that discriminates the type of electronic component mounted on a board,
A holding mechanism for holding electronic components;
A discrimination sensor for detecting the shape of the electronic component held by the holding mechanism;
A drive unit that changes a relative positional relationship between the holding mechanism and the discrimination sensor;
A processing device for determining the type of electronic component based on the detection result by the determination sensor;
A storage device that accumulates the discrimination position used for discrimination of electronic components for each product type,
The processing device switches the determination position for each type of electronic component based on the storage contents of the storage device, and the driving is performed so that the shape of a predetermined part of the electronic component is detected by the determination sensor at the switched determination position. A component discriminating apparatus characterized in that the electronic component is controlled to position the electronic component at the switched discriminating position . The storage device accumulates detection patterns for discrimination used for discrimination of electronic components for each product type,
The processing device switches the detection pattern for discrimination for each type of electronic component based on the stored contents of the storage device, and the electronic component based on the switched detection pattern for discrimination and the detection result by the discrimination sensor The parts discriminating apparatus according to claim 1, wherein the parts are discriminated.   The component determination apparatus according to claim 1, wherein the determination sensor detects a shape of a predetermined outer edge portion of the electronic component at the determination position. In a component mounting apparatus that mounts electronic components on a board,
A component identification device for identifying the type of electronic component mounted on the substrate;
A control device for controlling the mounting operation of the electronic component based on the determination result by the component determination device,
The component determination apparatus changes a relative positional relationship between a holding mechanism that holds an electronic component, a determination sensor that detects a shape of the electronic component held by the holding mechanism, and the holding mechanism and the determination sensor. A drive unit that performs the processing, a processing device that determines the type of the electronic component based on the detection result of the determination sensor, and a storage device that stores a determination position used for determination of the electronic component for each type, The processing unit switches the determination position for each type of electronic component based on the storage content of the storage device, and the driving unit detects the shape of the predetermined part of the electronic component by the determination sensor at the switched determination position. And mounting the electronic component at the switched discriminating position .

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