JP5748245B2 - POSITIONING DEVICE AND ELECTRONIC COMPONENT CONVEYING DEVICE INCLUDING THE SAME - Google Patents

Description

  The present invention relates to a positioning device that corrects the position of an electronic component that undergoes process processing, and an electronic component transport device that transports the electronic component to various process processes and positions the electronic component when performing the process processing.

  Electronic parts such as semiconductor elements are separated into individual pieces through various assembly processes such as dicing, mounting, bonding, and sealing, and then post-processes such as various inspections are performed. Examples of the post-process include a marking process, an appearance inspection, an electrical property inspection, a lead molding process, a classification of electronic components, or a combination of these processes.

  This post-process is mainly performed by an electronic component transport apparatus that transports the electronic component to the process processing unit. The electronic component transport apparatus is configured by a transport mechanism that aligns and transports electronic components and various process processing units on the transport path. As the transport mechanism, a turntable transport system, a linear transport system, or the like is generally used, and electronic components are sequentially supplied to various process processing units arranged on the transport path. This transport mechanism is configured by vacuum suction, electrostatic suction, Bernoulli chuck, or mechanical chuck mechanism, and has holding means for holding electronic components.

  As a method for supplying electronic components to the electronic component conveying apparatus, various methods such as a vibration-type parts feeder method that aligns electronic components in a certain direction and posture by vibration have been proposed. However, the electronic component is not necessarily supplied to the electronic component transport device in an accurate posture, and a positional shift may occur when the electronic component is held by the holding unit.

  However, in the electronic component transport apparatus, it is required that the electronic component be present at an accurate position and posture in order to perform highly accurate process processing. For example, to accurately contact the electrode of the electronic component with the contact for electrical property test, to keep the marking position accurate, and to insert the electronic component in the correct posture and position at the time of packing, etc. .

  Therefore, it is necessary to correct the positional deviation of the electronic component by providing a positioning device in the previous stage of the processing steps such as electrical characteristic test, marking, and insertion of the tape into the packing container. The positioning device places the electronic component on the stage, and corrects the position and posture of the electronic component by bringing the electronic component toward the center of the stage by a guide portion extending from four directions (see, for example, Patent Document 1). This positioning device has a common cam plate for following the four guide portions. The cam plate has a cam surface composed of a wide diameter portion and a narrow diameter portion so that each guide portion is driven individually. Is provided.

JP 2009-26936 A

  In the configuration in which the cam followers respectively provided in the four guide portions are in contact with one cam plate, the movement amounts of the four guide portions cannot be set individually. That is, the amount of movement of the guide portion varies depending on the rotation angle of the cam plate, but the change ratio is the same for all the guide portions.

  For this reason, when changing the electronic component processed with an electronic component conveying apparatus, much labor was required for adjustment of the positioning device accompanying the change. In other words, it is relatively easy to change to an electronic component having the same aspect ratio but different size only by changing the rotation angle of the cam plate. However, when the aspect ratio is different, the cam plate or the guide portion has to be changed, which requires disassembly of the positioning device, change of the cam plate or guide portion, reassembly, and adjustment work. In addition, it has been pointed out that various types of cam plates and guide parts must be stocked, which increases costs.

  The present invention has been proposed to solve the above-described problems, and a positioning device that makes it easy to correct the position of the electronic component regardless of the shape and size of the electronic component being conveyed. It aims at providing the electronic component conveying apparatus provided with.

A positioning device according to the present invention is a positioning device that performs position correction of an electronic component, and includes first and second guide portions that are arranged to face each other across an area where the electronic component is present, and the first and second components. while the perpendicular to the arrangement of the guide portion, the cam surface having third and fourth guide portions disposed opposite each other across the existing area of the electronic component, the narrow diameter portion whose diameter is gradually reduced in part provided A first cam plate for contacting and separating the first and second guide portions with respect to the electronic component, and a cam surface partially including a narrow-diameter portion whose diameter gradually decreases . And a second cam plate for contacting and separating the fourth guide portion with respect to the electronic component, and a rotation angle of the first cam plate and the second cam plate according to the shape and size of the electronic component and a rotation angle calculated in said first Kamupure And a control means for independently controlling the second cam plate and said first and second of said guide portions disposed opposite each other across the existing area of the electronic components, with respect to the electronic component The third and fourth guide portions that move with a time difference and are arranged to face each other across the region where the electronic component exists are moved with a time difference with respect to the electronic component, and the first cam plate and the second The first cam plate and the second cam plate are adjacent to and separated from the electronic component, and the first cam plate and the second cam plate are adjacent to each other. 4 guide portions are simultaneously brought into and out of contact with the electronic component, and the lower surfaces of the third and fourth guide portions are lower in installation height than the upper surface of the electronic component and are installed lower than the lower surface of the electronic component. The height is high and the first and The upper surface of the second guide portion is lower in installation height than the lower surfaces of the third and fourth guide portions, and higher in installation height than the lower surface of the electronic component, and the first and second guide portions. Each of the front end portions extends below the front end portions of the third and fourth guide portions and moves under the third and fourth guide portions .

The electronic component transport apparatus according to the present invention is an electronic component transport apparatus that performs process processing while transporting an electronic component, and holds the electronic component along the transport path while holding the electronic component. Holding means that moves intermittently, a process processing unit that is disposed at one point on the transport path, performs a process on the electronic component, and is disposed on the transport path immediately before the process processing unit. A positioning unit for correcting the position of the component, and the positioning unit includes a first guide unit and a second guide unit that are arranged to face each other across the region where the electronic component is present, and the first and second guide units. while the arrangement of the orthogonal cam surface having third and fourth guide portions disposed opposite each other across the existing area of the electronic component, the narrow diameter portion whose diameter is gradually reduced in a part is provided, wherein 1st and 1st Of the first cam plate to the guide portion contacts spaced relative to the electronic component, the cam surface is provided with a partially narrow diameter portion whose diameter is gradually reduced, the said third and fourth guide portions Calculating a rotation angle of the first cam plate and a rotation angle of the second cam plate according to a shape and size of the second cam plate to be brought into contact with and separated from the electronic component ; Control means for independently controlling the first cam plate and the second cam plate, and the first and second guide portions arranged to face each other across the area where the electronic component is present, The third and fourth guide portions that move with a time difference with respect to the electronic component and are disposed to face each other across the region where the electronic component exists are moved with a time difference with respect to the electronic component, The cam plate and the second The first and third guide portions adjacent to each other are simultaneously brought into contact with and separated from the electronic component, and the second cam plate and the second cam plate are adjacent to each other. The guide portion is simultaneously brought into and out of contact with the electronic component, and the lower surfaces of the third and fourth guide portions are lower in installation height than the upper surface of the electronic component and lower than the lower surface of the electronic component. The upper surfaces of the first and second guide portions are lower in installation height than the lower surfaces of the third and fourth guide portions, and higher in installation height than the lower surface of the electronic component, The tip portions of the first and second guide portions extend below both tip portions of the third and fourth guide portions and move under the third and fourth guide portions; It is characterized by.

  The narrow-diameter portions are provided in a one-to-one correspondence with the guide portions, and one narrow-diameter portion gradually decreases in diameter along one rotation direction of the same cam plate, and the other narrow-diameter portion. The diameter of the portion may gradually increase.

  According to the present invention, it is easy to correct the position of an electronic component no matter what shape and size of the electronic component is conveyed. That is, even if it is a square electronic component, a rectangular electronic component, or an electronic component with any ratio between the long side and the short side, without adjusting the cam surface of the cam plate, The position can be corrected simply by inputting the shape and size of the electronic component.

It is a perspective view of the positioning device concerning this embodiment. It is a perspective view which shows the drive mechanism of the guide part which concerns on this embodiment. It is a figure which shows the cam plate which follows a guide part. It is a top view which shows a guide part. It is a figure which shows the spring body which urges | biases a guide part. It is a figure which shows the detailed structure of a cam plate. It is a block diagram which shows the control means with which a positioning device is provided. It is a perspective view which shows operation | movement of a guide part. It is a figure which shows the operation | movement of the cam plate according to the electronic component of each shape and each magnitude | size. It is a figure which shows the whole structure of an electronic component conveying apparatus.

  Hereinafter, embodiments of a positioning device according to the present invention and an electronic component conveying device including the same will be described in detail with reference to the drawings.

[Positioning device]
[Constitution]
FIG. 1 is a perspective view of the positioning device 1. The positioning device 1 is disposed on the transport path R of the electronic component D, and corrects the position of the electronic component D by bringing the electronic component D toward the center of the stage 10 by the guide unit 20. In the process of bringing the electronic component D to the center, the angle of the electronic component D is also corrected.

  The stage 10 is an area where the electronic component D is present, and is a plane on which the electronic component D is placed. The center of the stage 10 is aligned with the stop point of the holding means that intermittently moves on the transport path R while holding the electronic component D. The electronic component D is conveyed onto the stage 10 by this holding means.

  The guide unit 20 is arranged from four directions so as to go to the center of the stage 10. The four guide portions 20 face each other in the XY axis directions, and each of them can approach and retract toward the center of the stage 10. The X-axis direction is a tangential direction of the transport path R at the center of the stage 10, and the Y-axis direction is a direction on the stage 10 orthogonal to the X-axis direction.

  These guide portions 20 have different movement amounts in the X-axis direction and the Y-axis direction. In other words, each guide unit 20 moves in accordance with the length and width of the electronic component D.

  The guide part 20a and the guide part 20b are opposed to each other in the X-axis direction, and correct the positional deviation in the X-axis direction with respect to the center of the stage 10 of the electronic component D. That is, the guide part 20a and the guide part 20b approach and retreat with respect to the center of the stage 10 along the X-axis direction, and the approach distance is adjusted to the length of the electronic component D in the X-axis direction.

  Further, the guide portion 20c and the guide portion 20d face each other in the Y-axis direction, and correct the positional deviation in the Y-axis direction with respect to the center of the stage 10 of the electronic component D. That is, the guide part 20c and the guide part 20d approach and retreat with respect to the center of the stage 10 along the Y-axis direction, and the approach distance is adjusted to the length of the electronic component D in the Y-axis direction.

  FIG. 2 is a perspective view showing a drive mechanism of the guide unit 20. Each of the four guide portions 20 is supported by a corresponding support block 30, and is driven by the rotation of the two cam plates 50 a and 50 b via the cam follower 40 attached to each of the support blocks 30. Move up.

  The two cam plates 50a and 50b each have a rotation shaft extending in the vertical direction of the plane portion, and are rotated by motors 60a and 60b.

  The motor 60a is a servo motor, a stepping motor, or the like that is driven when the positional deviation of the electronic component D in the X-axis direction is corrected. That is, the motor 60a rotates the cam plate 50a. Guide portions 20 a and 20 b are connected to the cam plate 50 a via the cam follower 40 and the support block 30.

  The motor 60b is a servo motor, a stepping motor, or the like that is driven when correcting the positional deviation of the electronic component D in the Y-axis direction. That is, the motor 60b rotates the cam plate 50b. Guide portions 20 c and 20 d are connected to the cam plate 50 b via the cam follower 40 and the support block 30.

  The drive mechanism of the guide unit 20 will be described in more detail with reference to FIGS. 3 is a top view showing the arrangement of the cam plate for following the guide portion 20, FIG. 4 is a top view of the guide portion 20, and FIG. 5 is a view showing a spring body that biases the guide portion 20. As shown in FIG. .

  In FIG. 3, the configuration drawn with a solid line is positioned below in a top view of the configuration drawn with a thick dotted line. That is, as shown in FIG. 3, the cam plate 50 b is disposed below the stage 10. The center of the stage 10 is located on the extension line of the rotating shaft of the cam plate 50b. The cam followers 40c and 40d of the guide portions 20c and 20d are arranged along the Y-axis direction and face each other with the rotation shaft of the cam plate 50b interposed therebetween. Therefore, the cam followers 40c and 40d move in the Y-axis direction so as to be in contact with and away from the center of the cam plate 50b in accordance with the shape of the cam surface formed on the peripheral surface of the cam plate 50b.

  On the other hand, the cam plate 50a is disposed away from the stage 10 in the Y-axis direction. However, the extension line of the rotation axis of the cam plate 50 a intersects the Y axis passing through the center of the stage 10. The cam followers 40a and 40b of the guide portions 20a and 20b are arranged along the X-axis direction and face each other with the rotation shaft of the cam plate 50a interposed therebetween. Therefore, the cam followers 40a and 40b move in the X-axis direction so as to be in contact with and away from the center of the cam plate 50a in accordance with the shape of the cam surface formed on the peripheral surface of the cam plate 50a.

  In FIG. 4, the configuration drawn with a solid line is located above the top view of the configuration drawn with a dotted line. That is, as shown in FIG. 4, the cam follower 40c driven by the cam plate 50b is fixed to the lower end portion of the support block 30c, and the cam follower 40d is fixed to the lower end portion of the support block 30d. The support blocks 30c and 30d face each other along the Y-axis direction across the center of the stage 10.

  The cam follower 40a that follows the cam plate 50a is fixed to the lower end of the support block 30a, and the cam follower 40b is fixed to the lower end of the support block 30b. The support blocks 30 a and 30 b extend along the Y-axis direction, and their tip ends extend to both sides of the center of the stage 10.

  The guide portion 20c is fixed to the upper surface of the support block 30c, and the guide portion 20d is fixed to the upper surface of the support block 30d. The guide portion 20a is fixed to the front end portion extending to the side of the stage 10 on the upper surface of the support block 30a, and the guide portion 20b is the front end extending to the side of the stage 10 on the upper surface of the support block 30b. The surface is fixed to the part.

  And these guide parts 20a-20d protrude toward the center of the stage 10 from each edge | side by the side of the stage 10 of the support blocks 30a-30d. Each of the guide portions 20a to 20d that face each other has a precisely parallel side at the tip.

  The guide portions 20a to 20d have thin end portions, and the extended heights of the guide portions 20a and 20b and the guide portions 20c and 20d are different. Therefore, the guide parts 20a and 20b can be brought into the lower part of the guide parts 20c and 20d and come into contact with and separated from the center of the stage 10, and the adjacent guide parts 20 do not collide with each other even if the end side is long. Absent. Therefore, the length of the sides of the guide portions 20a to 20d is sufficiently longer than the length of the sides of any shape and size of the electronic component D.

  As shown in FIG. 5, one end of each of the spring bodies 70a and 70b is fixed to each of the support blocks 30a to 30d, and pressed against the peripheral surfaces of the corresponding cam plates 50a and 50b via the cam followers 40a to 40d. It has been. In the present embodiment, the support blocks 30a and 30b facing each other with the cam plate 50a interposed therebetween are connected by two tension springs 70a. Each of the support blocks 30c and 30d has a compression spring 70b attached to the surface opposite to the cam plate 50b.

  FIG. 6 is a diagram showing a detailed configuration of the cam plate 50a. Since the cam plate 50b has the same shape and operation as the cam plate 50a, the description thereof is omitted.

  The cam plate 50a has a cam surface as a peripheral surface, and has narrow-diameter portions 80a and 80b and a remaining wide-diameter portion. The wide diameter portion is a substantially perfect circle with a radius r1. The narrow-diameter portions 80a and 80b are formed in series and have a mirror image relationship around the boundary between them, and the diameter gradually decreases from the end to the boundary between them, and the radius at the boundary is smaller than the radius r1. r2. That is, along one rotation direction of the cam plate 50a, the diameter of one narrow-diameter portion 80a gradually decreases, and the diameter of the other narrow-diameter portion 80b gradually increases. The amount of decrease in diameter is proportional to the rotation angle, and is a constant velocity cam in the narrow diameter portions 80a and 80b.

  As the cam plate 50a rotates, if one moves toward the center of the cam plate 50a and the other moves away from the center of the cam plate 50a, the narrow diameter portions 80a and 80b are Even if the curvature is different, the formation positions may be separated.

  The narrow diameter portion 80b corresponds to the cam follower 40b. As shown in FIG. 6A, when the cam plate 50a is rotated forward so that the cam follower 40b passes through the narrow-diameter portion 80b, the driven position of the cam follower 40b is centered on the cam plate 50a according to the rotation angle. Get closer. Accordingly, the guide portion 20b also approaches the center of the stage 10 through a distance corresponding to the rotation angle of the cam plate 50a via the cam follower 40b and the support block 30b.

  At this time, the cam follower 40a remains in the wide diameter portion, or the narrow diameter portion 80a is moved in the direction in which the diameter increases. Therefore, the guide part 20a corresponding to the cam follower 40a does not approach the center of the stage 10 simultaneously with the guide part 20b.

  The narrow diameter portion 80a corresponds to the cam follower 40a. As shown in FIG. 6B, when the cam plate 50a is reversely rotated so that the cam follower 40a passes through the narrow-diameter portion 80a, the driven position of the cam follower 40a is centered on the cam plate 50a according to the rotation angle. Get closer. Therefore, the guide portion 20a also approaches the center of the stage 10 by a distance corresponding to the rotation angle of the cam plate 50a via the cam follower 40a and the support block 30a.

  When the cam plate 50a is rotated in the reverse direction from the state where the cam follower 40b is positioned at the narrow diameter portion 80a, the cam follower 40b is driven to return the narrow diameter portion 80b toward the wide diameter portion, and eventually widens. Reach the diameter part. Therefore, the guide part 20 a approaches the center of the stage 10, while the guide part 20 b moves away from the center of the stage 10.

  FIG. 7A is a block diagram showing a control unit 90 that controls the drive mechanism of the guide unit 20. The control unit 90 includes an input unit 91, a storage unit 92, a calculation unit 93, an X-axis motor driver 94, and a Y-axis motor driver 95. This control means 90 moves each guide part 20 individually by the distance according to the shape and size of the electronic component D. That is, when information specifying the shape and size of the electronic component D is input, the control unit 90 controls the drive amounts of the motors 60a and 60b according to the information.

  The input unit 91 inputs information for specifying the shape and size of the electronic component D to the calculation unit 93. The input unit 91 is, for example, a mouse, a keyboard, a touch panel, or a camera. When the user inputs the vertical and horizontal lengths of the electronic component D using a mouse, keyboard, or touch panel, the input result is output to the calculation unit 93.

  The input unit 91 includes a CPU and a memory, stores the product number and product name of the electronic component D in association with vertical and horizontal lengths, and stores the product number and product name when the product number and product name are input. The vertical and horizontal lengths may be searched with reference to the association, and output to the calculation unit 93.

  The input unit 91 includes a camera that captures the electronic component D in front of the stage 10 and an OCR. The input unit 91 reads the product number and the product name stamped on the surface of the electronic component D, and reads the product number and the product name. The vertical and horizontal lengths corresponding to may be retrieved and output to the calculation unit 93.

  The storage unit 92 includes a non-volatile memory, and stores in advance the side length of the electronic component D and the rotation angles of the cam plates 50a and 50b in association with each other as shown in FIG. 7B. . The information on the rotation angle indicates the rotation angle necessary for the distal end portion of the guide portion 20 to move to a predetermined position. The predetermined position is a position of each side of the electronic component D whose position is corrected at the center of the stage 10. The information on the rotation angle is shown based on a specific origin position on the cam plates 50a and 50b. In other words, it can be said that the information on the rotation angle indicates the amount of movement of each guide portion 20 corresponding to the length of the side of the electronic component D.

  The calculation unit 93 includes a CPU, and calculates the rotation angles of the cam plates 50a and 50b according to the vertical and horizontal lengths of the electronic component D whose position is to be corrected. Specifically, the rotation angle corresponding to the vertical and horizontal lengths input from the input unit 91 is extracted from the storage unit 92.

  The X-axis motor driver 94 and the Y-axis motor driver 95 drive the motors 60a and 60b according to the rotation angles obtained by the calculation unit 93. Specifically, the motors 60 a and 60 b are rotated forward to move one of the guide portions 20 toward the center of the stage 10. Then, the motors 60 a and 60 b are reversely rotated to retract the guide unit 20 moved toward the center from the center, and the other guide unit 20 is moved toward the center of the stage 10.

[Action]
A specific operation of the positioning apparatus 1 will be described with reference to FIGS. FIG. 8 is a perspective view illustrating the operation of the guide unit 20, and FIG. 9 is a diagram illustrating the operation of the cam plates 50a and 50b corresponding to the electronic components D having various shapes and sizes.

  First, the operation of the guide unit 20 will be described. As shown in FIG. 8A, when the electronic component D is placed on the stage 10 through the transport path R, position correction of the electronic component D is started. Immediately after the electronic component D is placed, the cam followers 40 corresponding to all the guide portions 20 are located at the wide diameter portions of the cam plates 50a and 50b (origin positions), and have a radius r1 from the center of the cam plates 50a and 50b. The distance is. For this reason, all the guide parts 20 are in a state of being separated from the center of the stage 10 by the maximum distance.

  First, as shown in FIG. 8B, a pair of adjacent guide portions 20 among the guide portions 20 arranged in four directions are moved toward the center of the stage 10. For example, the guide portion 20 a aligned in the X-axis direction and the guide portion 20 c aligned in the Y-axis direction are moved toward the center of the stage 10.

  Next, as shown in FIG. 8C, while the guide portions 20 a and 20 c that have been moved toward the center of the stage 10 are retracted from the center of the stage 10, the other pair of guide portions 20 is moved to the stage 10. Move towards the center of the. That is, the guide portion 20b aligned in the X-axis direction and the guide portion 20d aligned in the Y-axis direction are moved toward the center of the stage 10.

  In the operations shown in FIG. 8B and FIG. 8C, the guide portions 20a and 20b extend below the tip portions of the guide portions 20c and 20d. It moves so as to sink under the guide portions 20c and 20d. Therefore, each guide portion 20 has a sufficiently wide tip portion as compared with the electronic component D, but the entire corresponding side of the electronic component D is pushed toward the center of the stage 10 without interfering with each other.

  Further, the operation of the cam plates 50a and 50b corresponding to the electronic components D having the respective shapes and sizes will be described. First, when the vertical and horizontal lengths of the electronic component D conveyed along the conveyance path R are input by the input unit 91, the calculation unit 93 refers to the storage unit 92 and calculates the rotation angles of the cam plates 50a and 50b. Keep it.

  It is assumed that a square electronic component D whose side length is L1 is input to the input unit 91. At this time, as shown in FIG. 9A, the control means 90 drives the motors 60a and 60b so that each cam follower 40 slides to a position where the radius r3 of the narrow diameter portions 80a to 80d is reached. Then, the cam plates 50a and 50b are rotated.

  In addition, it is assumed that a square electronic component D having a length L2 (<L1) in all directions is input to the input unit 91. At this time, as shown in FIG. 9B, the control means 90 drives the motors 60a and 60b so that each cam follower 40 slides to a position where the radius r2 of the narrow diameter portions 80a to 80d is reached. Then, the cam plates 50a and 50b are rotated.

  Further, it is assumed that a rectangular electronic component D having a side length in the X-axis direction L2 and a side length in the Y-axis direction L1 is input to the input unit 91. At this time, as shown in FIG. 9C, the control means 90 drives the motor 60a so that the cam followers 40a and 40b slide to the location where the radius r2 of the narrow diameter portions 80a and 80b is reached. The cam plate 50a is rotated. In addition, the control unit 90 drives the motor 60b to rotate the cam plate 50b so that the cam followers 40c and 40d slide to a position where the radius r3 of the narrow diameter portions 80c and 80d is reached.

[effect]
As described above, the positioning device 1 mounts the electronic component D while being orthogonal to the pair of guide portions 20c and 20d and the guide portions 20c and 20d arranged to face each other with the mounting region of the electronic component D interposed therebetween. Another set of guide portions 20a and 20b arranged to face each other across the region is provided on the stage 10.

  The pair of guide portions 20c and 20d are contacted and separated by the first cam plate 50b. The cam plate 50b is provided with a cam surface partially including narrow diameter portions 80c and 80d whose diameter gradually decreases. The other set of guide portions 20a and 20b are contacted and separated by a second cam plate 50a. The cam plate 50a is provided with a cam surface partially including narrow diameter portions 80a and 80b whose diameter gradually decreases.

  The positioning device 1 includes control means 90 that independently controls the rotation angle of the first cam plate 50b and the rotation angle 50a of the second cam plate according to the shape and size of the electronic component D. .

  This makes it easy to correct the position of the electronic component D regardless of the shape and size of the electronic component D being transported along the transport path R. That is, the cam surface of the cam plate is adjusted regardless of the ratio between the long side and the short side. It is possible to correct the position by simply inputting the shape and size of the electronic component D.

  Further, the distal end portions of one set of guide portions 20a and 20b extend below the distal end portions of the other set of guide portions 20c and 20d, and move under the other set of guide portions 20c and 20d. As a result, the guide portion 20 does not interfere with the adjacent guide portion 20 as it advances and retreats, so that the adjacent guide portions 20 can be moved at the same time, and the electronic component D can be moved at the tip of the guide portion 20. The length of each side can be made sufficiently long.

  By making the tip of the guide portion 20 sufficiently long, the tip can be brought into contact with the entire side of the electronic component D and pushed out toward the center of the stage 10. Therefore, the accuracy of positional deviation correction can be increased for any electronic component D having any shape and size. That is, it is possible to prevent the electronic component D from rotating due to the narrow pressing range with respect to the length of the electronic component D and the accuracy of position correction from being lowered.

  Further, the narrow-diameter portions 80a to 80d are provided in one-to-one correspondence with the respective guide portions 20. Then, along one rotation direction of the corresponding cam plate 50a, the diameter of one narrow-diameter portion 80a gradually decreases, and the diameter of the other narrow-diameter portion 80b gradually increases. Further, along one rotation direction of the corresponding cam plate 50b, the diameter of one narrow-diameter portion 80c gradually decreases, and the diameter of the other narrow-diameter portion 80d gradually increases. Thereby, the opposing guide part 20 moves with a time difference. Therefore, it is possible to prevent a situation where the opposing guide parts 20 move toward the center of the stage 10 at the same time and pinch the electronic component D, and the electronic component D that is vulnerable to impacts such as chipping and cracks can be prevented. There is no damage.

[Application example]
The electronic component conveying apparatus 2 provided with this positioning apparatus 1 is demonstrated. FIG. 10 shows the electronic component transport apparatus 2, (a) is a top view of the electronic component transport apparatus 2, and (b) is a side view.

  The turntable 21 of the electronic component transport device 2 shown in FIG. 10 is connected to a direct drive motor and rotates intermittently. Holding means 5 that is spaced apart at equal intervals along the outer periphery is fixed to the turntable 21. The holding means 5 moves up and down toward the stage where the electronic component D is processed while holding the electronic component D. The arrangement interval of the holding means 5 is equal to the rotation angle of one pitch of the turntable 21.

  The holding means 5 fixed to the turntable 21 includes a suction nozzle 51 supported by a support 52 fixed to the outer edge of the turntable 21 so as to move up and down, and a nozzle driving unit 53 fixed above the turntable 21. And have.

  The suction nozzle 51 is a pipe having a hollow inside. The inside of the pipe communicates with a pneumatic circuit of a vacuum generator (not shown) through a tube. The suction nozzle 51 sucks the electronic component D by generating a negative pressure by the vacuum generator and detaches the electronic component D by vacuum break.

  The nozzle drive unit 53 includes a rod 54 that pushes out the suction nozzle 51. When the actuator is operated to push the rod 54 toward the suction nozzle 51, the suction nozzle 51 is pressed against the tip of the rod 54 at the rear end 51a, and the tip of the nozzle moves downward. When the rod 54 is pulled by the actuator, the contact between the suction nozzle 51 and the rod 54 is released, and the tip of the nozzle returns upward.

  Various process processing units 4 are arranged around the turntable 21 so as to be aligned with any stop position of the suction nozzle 51. The process processing unit 4 includes the positioning device 1 of the present embodiment and the test unit 3 arranged at the subsequent stage of the positioning device 1. As the other process processing unit 4, a parts feeder, a marking unit, an appearance inspection unit, a sorting / sorting unit, a taping unit, a defective product discharge unit, and the like are arranged.

  The test unit 3 includes a contact for energizing the electronic component D. In a state where the position shift of the electronic component D is corrected by the positioning device 1, the electrode of the electronic component D contacts the contact. The test unit 3 measures electrical characteristics such as voltage, current, resistance, or frequency of the electronic component D by passing a current through the electronic component D or applying a voltage through the contact. As a measurement method, either a single contact method in which application and measurement are performed with a common contact or a Kelvin contact method in which application and measurement are performed with separate contacts may be employed. The test unit 3 stores numerical data indicating an allowable range of electrical characteristics in advance, and compares the measurement result with the numerical data to determine whether the electronic component P is good or defective.

  The parts feeder is a device that supplies the electronic component D to the electronic component transport device 2. This parts feeder, for example, combines a circular vibration parts feeder and a linear supply vibration feeder, and arranges and continuously conveys a large number of electronic components D to the end of the conveyance path immediately below the outer peripheral edge of the turntable 21. .

  The marking unit has a lens for laser irradiation facing the electronic component D, and performs marking by irradiating the electronic component D with a laser. The appearance inspection unit has a camera, takes an image of the electronic component D, and inspects the presence or absence of an electrode shape, surface defects, scratches, dirt, foreign matter, and the like of the electronic component D from the image. The classification sorting unit classifies the electronic component D into a defective product and a non-defective product according to the electrical characteristics and the result of the appearance inspection, and classifies and shoots according to the level.

  The taping unit stores the electronic component D determined to be non-defective. The defective product discharge unit discharges the electronic component D that has not been taped and packed from the electronic component transport apparatus.

  Such an electronic component transfer device includes a transfer control unit (not shown), and sends electric signals to the direct drive motor of the turntable 21, the holding means 5, the positioning device 1, and other various process processing units 4. These operation timings are controlled. That is, the conveyance control unit includes a ROM, a CPU, and a driver that store a control program, and outputs an operation signal at each timing to each drive mechanism through an interface according to the control program.

(Other embodiments)
In the electronic component conveying device 2 as described above, a linear conveying method or a plurality of turntables 1 may constitute one conveying path in addition to the rotating conveying method using the turntable 21. Further, as the holding unit 5, an electrostatic adsorption method, a Bernoulli chuck method, or a chuck mechanism that mechanically clamps the electronic component D may be provided.

  Moreover, as long as it has the positioning apparatus 1, it is not restricted to the above-mentioned kind of process processing unit 4, It can replace with the unit which implements another kind of process processing, and arrangement order can also be changed suitably. is there. For example, the positioning device 1 may be arranged as a front stage of the test unit 3, or the positioning apparatus 1 may be arranged as a front stage of a packing unit such as a taping unit to correct the positional deviation at the time of packing.

  Further, the positioning device 1 does not include the stage 10 on which the electronic component D is placed, and the holding unit 5 is moved down so that the electronic component D is positioned in an area surrounded by the guide unit 20, and the holding unit 5 is placed. Then, positioning may be performed while holding the electronic component D. The delivery time of the electronic component D between the holding means 5 and the stage 10 can be omitted, and the operation time can be shortened. When the electronic component D is transferred between the holding unit 5 and the stage 10, the possibility that the electronic component D is misaligned can be eliminated.

DESCRIPTION OF SYMBOLS 1 Positioning device 2 Electronic component conveying device 21 Turntable 3 Test unit 4 Process processing unit 5 Holding means 51 Suction nozzle 51a Rear end portion 52 Supporting portion 53 Nozzle driving portion 54 Rod R Conveyance path D Electronic component 10 Stages 20, 20a, 20b 20c, 20d Guide portion 30, 30a, 30b, 30c, 30d Support block 40, 40a, 40b, 40c, 40d Cam follower 50a, 50b Cam plate 60a, 60b Motor 70a Tension spring 70b Compression springs 80a, 80b, 80c, 80d Narrow Diameter portion 90 Control means 91 Input section 92 Storage section 93 Calculation section 94 X-axis motor driver 95 Y-axis motor driver

Claims (4)

A positioning device for correcting the position of an electronic component,
First and second guide portions disposed opposite to each other across the electronic component existing area;
Third and fourth guide portions that are arranged opposite to each other across the region where the electronic component is present while being orthogonal to the arrangement of the first and second guide portions;
Cam surface is provided with a narrow diameter portion whose diameter gradually decreases in a part, the first cam plate contacting and separating said first and second guide portions with respect to the electronic component,
Diameter cam surface is provided with a portion to gradually narrow diameter portion to be decreased, and the second cam plate contacting and separating said third and fourth guide portion with respect to the electronic component,
The rotation angle of the first cam plate and the rotation angle of the second cam plate are calculated according to the shape and size of the electronic component, and the first cam plate and the second cam plate are made independent. Control means for controlling
With
The first and second guide portions arranged opposite to each other across the existence area of the electronic component move with a time difference with respect to the electronic component ,
The third and fourth guide portions arranged opposite to each other across the electronic component existing area move with a time difference with respect to the electronic component,
The first cam plate and the second cam plate simultaneously contact and separate the adjacent first and third guide portions with respect to the electronic component,
The first cam plate and the second cam plate simultaneously contact and separate the second and fourth guide portions adjacent to the electronic component,
The lower surfaces of the third and fourth guide portions are lower in installation height than the upper surface of the electronic component, higher in installation height than the lower surface of the electronic component, and the upper surfaces of the first and second guide portions. The installation height is lower than the lower surfaces of the third and fourth guide parts, the installation height is higher than the lower surface of the electronic component,
The tip portions of the first and second guide portions extend below the tip portions of the third and fourth guide portions, and move under the third and fourth guide portions. about,
A positioning device. The narrow-diameter portions are provided in a one-to-one correspondence with the guide portions, and the diameter of one narrow-diameter portion gradually decreases along the one rotation direction of the corresponding cam plate, and the other narrow-diameter portion The diameter of the part increases gradually,
The positioning device according to claim 1 . An electronic component transport apparatus that performs process processing while transporting an electronic component,
A transport path of the electronic component;
Holding means for holding the electronic component and intermittently moving along the conveyance path;
A process processing unit that is disposed at one point on the transport path and performs a process on the electronic component;
A positioning unit that is arranged on the transport path immediately before the process processing unit and performs position correction of the electronic component;
With
The positioning unit is
First and second guide portions disposed opposite to each other across the electronic component existing area;
Third and fourth guide portions that are arranged opposite to each other across the region where the electronic component is present while being orthogonal to the arrangement of the first and second guide portions;
Cam surface is provided with a narrow diameter portion whose diameter gradually decreases in a part, the first cam plate contacting and separating said first and second guide portions with respect to the electronic component,
Diameter cam surface is provided with a portion to gradually narrow diameter portion to be decreased, and the second cam plate contacting and separating said third and fourth guide portion with respect to the electronic component,
The rotation angle of the first cam plate and the rotation angle of the second cam plate are calculated according to the shape and size of the electronic component, and the first cam plate and the second cam plate are made independent. Control means for controlling
With
The first and second guide portions arranged opposite to each other across the existence area of the electronic component move with a time difference with respect to the electronic component ,
The third and fourth guide portions arranged opposite to each other across the electronic component existing area move with a time difference with respect to the electronic component,
The first cam plate and the second cam plate simultaneously contact and separate the adjacent first and third guide portions with respect to the electronic component,
The first cam plate and the second cam plate simultaneously contact and separate the second and fourth guide portions adjacent to the electronic component,
The lower surfaces of the third and fourth guide portions are lower in installation height than the upper surface of the electronic component, higher in installation height than the lower surface of the electronic component, and the upper surfaces of the first and second guide portions. The installation height is lower than the lower surfaces of the third and fourth guide parts, the installation height is higher than the lower surface of the electronic component,
The tip portions of the first and second guide portions extend below the tip portions of the third and fourth guide portions, and move under the third and fourth guide portions. about,
An electronic component conveying device characterized by the above. The narrow-diameter portions are provided in a one-to-one correspondence with the guide portions, and the diameter of one narrow-diameter portion gradually decreases along the one rotation direction of the corresponding cam plate, and the other narrow-diameter portion The diameter of the part increases gradually,
The electronic component conveying apparatus according to claim 3 .

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