JP3406975B2 - Mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a mounting apparatus for mounting, on a substrate, minute electronic components (hereinafter, referred to as articles) such as ICs, resistors, and capacitors. Things. 2. Description of the Related Art Conventionally, for example, an image of an article is read by a reading head while the mounting head holds the article in a supply section of the article and then moves the article to the mounting section by moving means. As the reading head, a CCD element for reading an article two-dimensionally, a camera having a built-in imaging tube, or the like is used, and an image of the article is read in the course of moving the article. A reading head provided with a CCD element, a camera, and the like reads an image of an entire article at the moment when the article passes a corresponding position. Then, the relative position of the article to the mounting head is detected based on the reading result of the reading head, and the relative position between the mounting head and the article is corrected based on the detection result, whereby the article is moved to a preset position. Installing. [0004] However, CCD devices and cameras for two-dimensionally reading articles are expensive, and it is necessary to temporarily stop moving when reading an image of the article. It's been a minute. For this reason, for example, Japanese Patent Laid-Open No.
As described in Japanese Patent Application Laid-Open Publication No. H10-260, there is a device that reads an image of an article using a line sensor, but since such a line sensor is usually fixed to a mounting device, the article moves to this line sensor. Then, the image processing by the line sensor is performed. For this reason, the movement route of the article is limited, and extra movement is performed, and there is a problem that it takes time from supply to mounting. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mounting apparatus that recognizes a component in a process of moving the component from a supply unit to a mounting unit and shortens a mounting time. . [0007] In order to solve the above-mentioned problems and to achieve the object, the present invention is configured as follows. According to a first aspect of the present invention, there is provided a mounting apparatus for reading an image of a component while moving the component from the supply unit to the mounting unit and mounting the component at a predetermined position. After suctioning, a mounting head in which a plurality of nozzles that move to the mounting portion and mount components are arranged in a plurality of rows,
A line sensor for reading data for recognizing a suction state of a component to be suctioned for each nozzle, and moving the line sensor in the horizontal direction with respect to the component in a process of moving the component from the supply unit to the mounting unit. A line sensor moving unit, and for each movement of the mounting head from the supply unit to the mounting unit, changing a moving direction of the line sensor, determining a data reading direction and a data reading start point based on the position of the line sensor, A mounting apparatus characterized by causing a sensor moving means to sequentially execute a data reading movement of a component mounting status, and to recognize a suction status of all components suctioned by each nozzle. ]. According to the first aspect of the present invention, each time the mounting head moves from the supply unit to the mounting unit, the moving direction of the line sensor is changed, and the data reading direction and the data reading start are started according to the position of the line sensor. By determining the point and sequentially performing the data reading movement of the component mounting status by the line sensor moving means, for example, if the line sensor is at the right end in the immediately preceding mounting process and the capturing process has been completed, in the next mounting process, Since the line sensor starts reading data from the right end of the component to the left, the efficiency of capturing images is higher than that of only one direction, and also recognizes the suction status of all components sucked by multiple nozzles In doing so, there is no waste in moving the line sensor, and the mounting time can be reduced. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a mounting apparatus, and FIG.
FIG. 3 is a plan view of the mounting head and the licensor unit, and FIG. 3 is a view in the direction of arrow A in FIG. A transport line 1 is provided at the center of the mounting apparatus, and the transport line 1 transports the substrate 2 to the mounting section 100. Supply units 3 are arranged on both sides of the transport line 1, and the supply units 3 supply components P by feeders 4. The component P of the supply unit 3 is attracted by the mounting head 6, moved by the operation of the horizontal moving unit 7 and the vertical moving unit 8, and mounted on the substrate 2 of the mounting unit 100. The horizontal moving means 7 and the vertical moving means 8 serve as component moving means K for moving the component 5 from the supply section 3 to the mounting section 1.
1. The mounting head 6 has a head body 70, a nozzle holder 71 provided on the head body 70, and a plurality of nozzle portions 72 provided on the nozzle holder 71 so as to be able to move up and down. The component P is sucked by the nozzle unit 72. The head body 70 is provided with a shaft 9 of the lateral moving means 7.
The shaft 9 is rotated by a motor 10 so that the mounting head 6 moves laterally on the shaft 9. The bracket 11 of the horizontal moving means 7 is attached to the shaft 12 of the vertical moving means 8,
The shaft 12 is rotated by a motor 13 so that the bracket 11 moves on the shaft 12 in the vertical direction. The head body 70 of the mounting head 6 is mounted on a shaft 9 of the lateral moving means 7, and the shaft 9 is rotated by a motor 10 so that the mounting head 6 moves on the shaft 9 in the horizontal direction. It has become. The bracket 11 of the lateral moving means 7
Is mounted on a shaft 12 of the vertical moving means 8, and the shaft 12 is rotated by a motor 13, whereby the bracket 11 moves on the shaft 12 in the vertical direction. Further, a shaft 60 is provided on the bracket 11, and the shaft 60 is rotated by a motor 61. The shaft 60 is provided with a line sensor unit 62. The rotation of the shaft 60 causes the line sensor unit 62 to move on the shaft 60. The shaft 60, the motor 61 and the line sensor unit 62 constitute a sensor moving means K2 for moving the line sensor in conjunction with the movement of the component P. The line sensor unit 62 comprises a line sensor 63 and mirrors 64 and 65. The mirror 65 is located below the component P adsorbed by the nozzle 72 of the mounting head 6, and the image of the component P is The light is reflected from the mirror 65 via the mirror 64 and input to the line sensor 63. In the process of moving the component P from the supply unit 3 to the mounting unit 100, the line sensor 63 is moved with respect to the component P to read an image of the component P and send it to the image processing unit 20. Then, the relative position of the component P with respect to the mounting head 6 is detected based on the reading result of the line sensor 63, and the relative position between the mounting head 6 and the component P is corrected based on the detection result. Is mounted at the specified position. That is, the component P is supplied from the supply unit 3 to the mounting unit 100.
In the process of moving the component P, the line sensor 63 is moved with respect to the component P and the image of the component P is read. Can be recognized, and the mounting time can be reduced. For example, when the component P is located on the left side of the supply unit 3, it moves from the left side to the position on the substrate 2 of the mounting unit 100 along the paths a1, b1, c1, d1, and e1. The line sensor unit 62 is moved rightward from the left side of the row of the nozzle section 72 to the vicinity of the nozzle section 72 at the left end of the row, and the vicinity of the nozzle section 72 is further recognized in order to recognize the suction state of the component to the nozzle section 72. Then, the data reading movement of the image for moving the line sensor unit 62 to the right is performed, and then the component preparation status recognition movement for moving the line sensor unit 62 to the right to the vicinity of the next nozzle unit 72 is performed. Data reading movement for moving the line sensor unit 62 rightward in the vicinity of the part 72 is sequentially performed,
The image is read by moving the line sensor unit 62 with respect to all the components P sucked by the nozzles 72, and then mounted at a predetermined position. On the other hand, for example, when the component P is located on the right side of the supply unit 3, the component P moves from the right side to the position on the substrate 2 of the mounting unit 100 along the paths a2, b2, c2, d2, and e1. The line sensor unit 6 extends from the right side of the plurality of one-row nozzle sections 72 to the vicinity of the rightmost nozzle section 72 of the row.
2 is moved to the left, and further, in order to recognize the state of suction of the component to the nozzle portion 72, the data reading movement of the image is performed by moving the line sensor unit 62 to the left near the nozzle portion 72. A component preparation movement for moving the line sensor unit 62 to the left to the vicinity of the nozzle unit 72 and a data reading movement for moving the line sensor unit 62 to the left near the next nozzle unit 72 are sequentially performed. The image is read by moving the line sensor unit 62 for all the components P sucked by the unit 72, and then mounted at a predetermined position. FIG. 4 is a block diagram of the image processing unit. The image information read by the line sensor 63 is input to the A / D converter 21 and is input to the memory writer 22 as digital information. The capture start control unit 23 outputs a capture start command to the memory write control unit 22, and the memory write control unit 22 writes into the image memory 24 based on the command. Based on the information stored in the image memory 24, the position / inclination detection unit 25 recognizes the position and inclination of the component P, and the position / inclination correction unit 26 corrects the position and inclination of the component P. It is supposed to. FIG. 5 is an operation flowchart of the mounting apparatus. In step a, the line sensor 63 is retracted so that the mounting head 6 does not interfere with the suction of the component P. Then, in step b, the mounting head 6
Sucks the component P and moves the component P to the mounting position (step c). In the process of moving the part P, the image is read by moving the line sensor 63 with respect to the part P (step d). When this image has finished loading,
With the line sensor 63 retracted (step e), the component P
The position and inclination of the component P are recognized (step f), the position and inclination of the component P are corrected (step g), and the component P is mounted at a predetermined position (step h). FIG. 6 is a block diagram of another embodiment of the image processing section. The image processing unit 200 of this embodiment enables the line sensor to move with respect to the component from either the left or the right. In this embodiment, the image information read by the line sensor 630 is input to the A / D converter 210 and input to the memory write controller 220 as digital information. On the other hand, the capturing direction determining unit 300 determines the capturing direction and the capturing start point of the image based on the current position of the line sensor 630, and stores the determined data in the memory writing control unit 220.
Is output to the capture start control unit 230. The memory writing control unit 220 writes the data in the image memory 24 based on this command. Based on the information stored in the image memory 240, the position / inclination detection unit 250 recognizes the position and inclination of the component P, and the position / inclination correction unit 260 corrects the position and inclination of the component P. Has become. Therefore, for example, if the line sensor 630 is at the right end in the immediately preceding mounting process and the capturing process has been completed, in the next mounting process, the line sensor 630 starts capturing an image from the right end of the component P to the left. . For this reason, the efficiency of capturing images is higher than that of capturing images in only one direction. FIGS. 7 to 9 show another embodiment of the mounting apparatus. FIG. 7 is a schematic structural view of the mounting apparatus. FIG. 8 is a plan view of the mounting head and the licensor unit. It is the arrow view seen from. In this embodiment, a motor 80 is attached to the mounting head 6.
Is provided, and the rotation of the shaft 81 allows the line sensor unit 62 to move.
The line sensor unit 62 is configured in the same manner as described above. By providing the mounting head 6 with a sensor moving unit K2 for moving the line sensor unit 62 in conjunction with the movement of the component P, the apparatus can be downsized. Can be. The sensor moving means K2 includes a line sensor unit 62, a motor 80, and a shaft 81. As described above, according to the first aspect of the present invention, each time the mounting head moves from the supply unit to the mounting unit, the moving direction of the line sensor is changed and the position of the line sensor is changed. By determining the data reading direction and the data reading start point, and sequentially causing the line sensor moving means to perform the data reading movement of the component mounting status, the efficiency of image capturing is improved as compared with the case where only one direction is taken. In recognizing the suction state of all the components sucked by the nozzle, the movement of the line sensor is not wasted, and the mounting time can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a mounting device. FIG. 2 is a plan view of a mounting head and a licensor unit. FIG. 3 is a view as seen from the direction of arrow A in FIG. 2; FIG. 4 is a block diagram of an image processing unit. FIG. 5 is an operation flowchart of the mounting apparatus. FIG. 6 is a block diagram of another embodiment of the image processing unit. FIG. 7 is a schematic configuration diagram of a mounting apparatus. FIG. 8 is a plan view of the mounting head and the licensor unit. FIG. 9 is a view as seen from the direction of arrow B in FIG. 8; [Description of Signs] 1 transport line 3 supply unit 20 image processing unit 63 line sensor 100 mounting unit P component K2 sensor moving means

Claims (1)

(57) [Claims] [Claim 1] While moving a component from a supply unit to a mounting unit,
A mounting device that reads an image of the component and mounts the component at a predetermined position; a mounting head in which a plurality of nozzles for moving the mounting unit and mounting the component are arranged in a plurality of rows after sucking the component in the supply unit; A line sensor for reading data for recognizing a suction state of a component to be suctioned for each nozzle; and in a process of moving the component from the supply unit to the mounting unit, the line sensor is moved in the horizontal direction with respect to the component. A line sensor moving unit, for each movement of the mounting head from the supply unit to the mounting unit, changing a moving direction of the line sensor, determining a data reading direction and a data reading start point according to the position of the line sensor, Recognize the suction status of all components sucked by each nozzle by causing the sensor moving means to sequentially execute data reading movement of component mounting status A mounting apparatus characterized in that the mounting is performed.