JP2016128352A - Electronic component conveyance device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic component conveyance device 1 which can reduce the weight of a rotor 4 rotated by a direct drive motor 7 without shortening the distance of a conveyance passage 2, and can achieve higher speed rotation of the rotor while maintaining the number of processing units that can be arranged.SOLUTION: An electronic component conveyance device 1 intermittently rotates a rotor core with a rotary motor. The rotor core is positioned at the center of an annular conveyance passage 2 of an electronic component W, and it diameter is smaller than that of the conveyance passage 2. The rotor core is provided with a plurality of arms 6 which expand radially and extend their tips over the conveyance passage 2. An adsorption nozzle 3 for adsorbing and holding the electronic component W on the conveyance passage 2 is provided at the tip of each arm 6. The electronic component conveyance device 1 conveys the electronic components W to various units 91-96 in order, which perform inspection, processing, posture correction, or classification to the electronic components W arranged along the conveyance passage 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic component transport apparatus that transports electronic components.

  Electronic components are subjected to various inspection items in the post-process of the manufacturing process, and non-defective products are screened and packed together for shipment. The inspection item is, for example, an appearance inspection or an electrical characteristic inspection. In addition, the electronic component determined to be non-defective may be subjected to processing such as marking processing.

  For inspection and processing in these subsequent processes, an electronic component transfer device called a handler is used. The electronic component transport apparatus has a transport path for aligning and transporting electronic components, and various units for inspection, processing, and screening are arranged along the transport path. In addition, a correction unit for appropriately correcting the posture of the electronic component prior to inspection, processing, and screening is also arranged.

  As the transport path, a turntable transport system, a linear transport system, or the like is generally used. When the turntable transport method is adopted, the electronic component transport device includes a transport table that is rotated in the circumferential direction by a direct drive motor or the like (see, for example, Patent Document 1). A pocket is formed on the upper surface along the circumference of the outer peripheral edge of the transfer table. The electronic component transport apparatus accommodates the electronic component in the pocket and intermittently rotates the transport table, thereby forming a transport path on the outer peripheral edge of the transport table and moving the electronic component.

  Then, the conveyance table is rotated at a predetermined angle, and the rotation to stop and the stop are continued. By disposing various units at the position where the pocket exists when the transport table is stopped, electronic parts are transferred from the transport path to the various units, and inspection, processing, posture correction, classification, and the like are possible.

  In some cases, the vacuum suction openings are formed at equal intervals on the outer peripheral surface of the transfer table, and the electronic components are sucked onto the outer peripheral surface of the transfer table to transfer the electronic components (for example, see Patent Document 2). In some cases, the suction nozzle is hung from the outer peripheral edge of the transport table, and the electronic component is transported by holding the electronic component with the suction nozzle (see, for example, Patent Document 3).

  In this way, the electronic component transport apparatus moves the electronic component on the transport table by adding holding functions such as pockets and suction nozzles to the transport table. This turntable transport type electronic component transport apparatus is known to have a very short tact time and to enable high-speed processing of electronic components. In order to further shorten the tact time in the electronic component conveying apparatus of the turntable conveying method, simply increasing the rotation speed of the conveying table and shortening the stop time.

JP 2014-062765 A JP 2005-001867 A JP 2006-202851 A

  In recent years, the rotation speed of the transfer table is reaching its limit. This is because the direct drive motor cannot control the moment of inertia generated by suddenly accelerating and stopping the transfer table. Conventionally, this has been done in the direction of reducing the moment of inertia by reducing the weight of the transport table by removing the meat. However, if the thickness is excessively excessive, the conveyance table loses rigidity, and the conveyance table itself cannot withstand the moment of inertia, which may cause problems such as distortion.

  Although it is conceivable to reduce the weight of the transport table by reducing the size of the transport table, shrinking the outer peripheral edge of the transport table means shortening of the transport path. When the transport path is short, various units arranged along the transport path physically interfere with each other. Therefore, downsizing the transport table is not preferable because it limits the number of various units.

  The present invention has been proposed in order to solve the above-mentioned problems, and it is possible to reduce the weight of a rotating body rotated by a rotary motor without shortening the transport path and to arrange a processing unit that can be arranged. An object of the present invention is to provide an electronic component transport apparatus that can realize further high-speed rotation of a rotating body while maintaining the number.

  An electronic component transport device according to the present invention is an electronic component transport device that transports an electronic component along an annular transport path, and is positioned at the center of the rotation motor and the transport path and has a smaller diameter than the transport path. A rotating body core intermittently rotated by the rotating motor, a plurality of arms extending radially from the rotating body core and extending on the conveying path, and provided at the leading end of the arm, on the conveying path A suction nozzle for sucking and holding electronic components, and sequentially transporting the electronic components to various units for inspection, processing, posture correction, or classification of the electronic components arranged along the transport path, Features.

  A pneumatic circuit that is interposed between the negative pressure generator and the suction nozzle and controls the supply of negative pressure to the suction nozzle, a hollow pipe that connects the pneumatic circuit and the suction nozzle, and the pneumatic circuit inside The rotary body core is the manifold, and the suction nozzle is fixed to the manifold via the arm, and the arm is moved from the manifold to the manifold. It may be extended and positioned on the transport path.

  The manifold is concentric with the manifold and larger in diameter than the manifold, has a disk-like stay concentric with the transport path and smaller in diameter than the transport path, and the arm is fixed to the stay. You may be allowed to.

  The stay may be provided separately from the manifold and intermittently rotated by the rotary motor.

  The stay may be provided integrally with the manifold and intermittently rotated by the rotary motor.

  The arm extends from the rotor core and has a bearing at the tip, and is supported by the bearing, and further extends to the transport path, and has a suction nozzle at the extension. An advancing / retreating of the suction nozzle, which is positioned on a rotation locus drawn by the bearing on the inner side of the conveyance path, and moves the second arm supported by the bearing along the bearing. You may make it further provide a drive part.

  The first arm may be detachably fixed to the rotating body core.

  According to the present invention, since the rotating body that transports the electronic component along the transport path is reduced in weight, the transport speed of the electronic component is improved. In addition, since the length of the transport path is maintained, the number of various units can be maintained, and the function of the electronic component transport apparatus is also maintained.

It is a top view which shows the whole structure of the electronic component conveying apparatus which concerns on 1st Embodiment. It is a side view which shows the whole structure of the electronic component conveying apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the structure of the rotary body of the electronic component conveying apparatus which concerns on 1st Embodiment. It is a side view which shows the structure of the rotary body of the electronic component conveying apparatus which concerns on 2nd Embodiment. It is a side view which shows the structure of the rotary body of the electronic component conveying apparatus which concerns on 3rd Embodiment.

(First embodiment)
The electronic component transport apparatus 1 shown in FIGS. 1 and 2 performs alignment transport of the electronic components W, various processing of the electronic components W, and screening of the electronic components W. The electronic component W is a component used for an electrical product, and is formed by packaging a semiconductor element or the like. Examples of the semiconductor element include discrete semiconductors such as transistors, diodes, capacitors, resistors, and integrated circuits.

  The electronic component transport apparatus 1 has an annular transport path 2, and various units are arranged along the transport path 2. The various units are arranged for inspection, processing, posture correction, and classification, and are, for example, a supply unit 91, an electrical characteristic measurement unit 92, an appearance inspection unit 93, a posture correction unit 94, a discharge container 95, and a storage unit 96. .

  The electronic component transport apparatus 1 places the electronic components W from the supply unit 91 on the transport path 2 and aligns them, and intermittently moves the electronic components W along the transport path 2. Various units 91 to 96 are arranged at each stop position of the electronic component W. The electrical property measuring unit 92 energizes the electronic component W and measures electrical properties. The appearance inspection unit 93 images the appearance of the electronic component W and detects scratches, dirt, and the like. The posture correction unit 94 appropriately corrects the orientation and position of the electronic component W for energization and photographing. The discharge container 95 accommodates an electronic component W that has not been determined to be a non-defective product as a result of inspection of electrical characteristics and appearance. The accommodation unit 96 accommodates the electronic component W determined as a non-defective product as a result of the inspection of the electrical characteristics and the appearance.

  The electronic component transport apparatus 1 has a suction nozzle 3 on the transport path 2 that moves intermittently along the transport path 2. The suction nozzle 3 is a holding unit that holds the electronic component W. The suction nozzle 3 moves on the conveyance path 2 while holding the electronic component W, stops at the place where each of the units 91 to 96 is disposed, and removes the electronic component W for inspection by each of the units 91 to 96. Deliver. At each stop position of the suction nozzle 3, an advancing / retreating drive device 8 for pushing the suction nozzle 3 toward the unit is provided. The suction nozzle 3 is moved to the unit by the advancing / retreating drive device 8, the electronic component W is delivered to the unit, and after the unit is inspected, the electronic component W is held again. Leave.

  The suction nozzle 3 is positioned on the transport path 2 by being supported by the rotating body 4 via the arm 6. The rotating body 4 is arranged at the center of the transport path 2 and has a smaller diameter than the transport path 2. The rotating body 4 is supported by a direct drive motor 7. The rotating body 4 and the direct drive motor 7 are arranged in the vertical direction perpendicular to the installation plane of the transport path 2. The rotating body 4 is rotatably supported by a rotating shaft extended upward by a lower direct drive motor 7.

  As shown in FIG. 3, the suction nozzle 3 has a through hole 32 penetrating the shaft inside. The suction nozzle 3 has an opening 31 facing downward at the tip, and the opening 31 is connected to the through hole 32. The through hole 32 is connected to the pneumatic circuit 42 at the opening end opposite to the opening 31. The pneumatic circuit 42 communicates with a negative pressure generator such as a vacuum pump or an ejector. The suction nozzle 3 sucks the electronic component W through the opening 31 when a negative pressure is generated in the pneumatic circuit 42, and when the vacuum break or the atmosphere is released, the suction nozzle 3 loses the suction force and detaches the electronic component W from the opening 31. Let

  The pneumatic circuit 42 is formed inside the lower manifold 41. The lower manifold 41 is a thin cylinder. The same number of inlets 44 as the suction nozzles 3 are formed on the upper bottom surface of the lower manifold 41. Further, the same number of outlets 45 as the suction nozzles 3 are formed on the circumferential surface of the lower manifold 41. The inlet 44 and the outlet 45 communicate with each other one to one inside the lower manifold 41.

  That is, the lower manifold 41 is formed with the same number of L-shaped through holes 43 as the suction nozzles 3 with the upper bottom surface as the inlet 44 and the circumferential surface as the outlet 45. The through hole 43 and the suction nozzle 3 communicate with each other through the hollow tube 33. One end of the hollow tube 33 is connected to the outlet 45 of the through hole 43, and the other end of the hollow tube 33 is connected to the suction nozzle 3.

  The upper manifold 5 overlaps the upper bottom surface of the lower manifold 41. The upper manifold 5 has a thin cylindrical shape. The upper manifold 5 fixes a hollow tube 46 extending from the negative pressure generator. In the upper manifold 5, the same number of linear through holes 51 that penetrate the upper bottom surface and the lower bottom surface are formed as many as the through holes 43 of the lower manifold 41. The hollow tube 46 extending from the negative pressure generator is connected to an inlet 44 formed on the upper bottom surface of the through hole 51.

  The upper manifold 5 is stationary. The lower manifold 41 is supported from below by the shaft of the direct drive motor 7 on the lower bottom surface side, and intermittently rotates in the circumferential direction. The lower bottom surface of the upper manifold 5 and the upper bottom surface of the lower manifold 41 are slid together. Thus, the suction nozzle 3 can suck the electronic component W.

  The suction nozzle 3 is attached around the lower manifold 41 and is intermittently rotated by the direct drive motor 7 in conjunction with the lower manifold 41. The lower manifold 41 is coaxially fixed with a disk-shaped flange 100 having a larger diameter than the lower manifold 41. In the flange 100, L-shaped first arms 61 extend radially outward along the radial direction from the flange 100. The flange 100 is a stay for fixing the first arm 61.

  The first arm 61 is bolted by placing one arm on the upper bottom surface of the flange 100 and inserting the bolt 101 so as to penetrate the first arm 61 and the flange 100. That is, the first arm 61 is detachable by fastening and unfastening with the bolt 101 while the lower manifold 41 is pivotally supported by the direct drive motor 7.

  The other arm of the first arm 61 is a bearing 62 and extends downward. An L-shaped second arm 63 is supported on the bearing 62. One arm of the second arm 63 is supported by the bearing 62 of the first arm 61 and extends downward, and the other arm of the second arm 63 is bent along the radial direction of the flange 100, It extends radially. The suction nozzle 3 is fixed to the other arm end of the second arm 63 and extends downward.

  That is, the rotating body 4 is formed by the lower manifold 41, the flange 100, the first arm 61, and the second arm 63 described above. The rotating body 4 is formed by extending the arm 6 including the first arm 61 and the second arm 63 radially from the rotating body core using the lower manifold 41 and the flange 100 as a rotating body core. There is nothing between the adjacent arms 6.

  The advancing / retreating drive device 8 is disposed immediately above the bearing 62 of the first arm 61 when the rotating body 4 is stopped. In other words, the advancing / retreating drive device 8 is immovable on the inner peripheral side with respect to the transport path 2. This forward / backward drive device 8 has a motor, a cam mechanism, and a rod, and converts the rotational force of the motor into a linear motion by the cam mechanism and transmits it to the rod. The rod extends toward one end of the second arm 63 supported by the bearing 62, contacts the base end of the second arm 63 from above, and moves the second arm 63 including the suction nozzle 3. Press down.

  Such an electronic component conveying apparatus 1 causes the direct drive motor 7 to repeatedly rotate and stop the rotating body 4. The rotation angle of the rotating body 4 is equal to the circumferentially equidistant installation angle of the suction nozzle 3 and is equal to the unit installation interval. Further, the installation angle of the unit and the stop angle of the suction nozzle 3 are adjusted so that the stop position of the suction nozzle 3 is equal to the arrangement position of the unit.

  The acceleration of the rotating body 4 is proportional to the output of the direct drive motor 7 and inversely proportional to the mass of the rotating body 4. The rotating body 4 is composed of the radially extending arms 6 except that the lower manifold 41 and the flange 100 are used as the rotating body cores, and the space between the arms 6 is a gap. Compared to a conventional electronic component conveyance device that holds the electronic component W with a rotary table whose diameter is expanded to the conveyance path 2, the weight is reduced by subtracting the rotating body core and the arm 6 from the mass of the rotary table. Therefore, the electronic component conveying apparatus 1 can increase the acceleration of the rotating body 4.

  The arm 6 includes a first arm 61 and a second arm 63, and a bearing 62 for moving the suction nozzle 3 back and forth and a portion that slides in the bearing 62 are inside the transport path 2. The bearing 62 and the portion sliding inside the bearing 62 have the largest mass in the arm 6. By moving closer to the center of rotation, the moment of inertia can be reduced, and the rotating body 4 can be easily started and stopped, so that the acceleration of the rotating body 4 can be further increased.

  On the other hand, the electronic component conveying device 1 is extended from the rotating body core having a smaller diameter than the conveying path 2 so that the suction nozzle 3 reaches the conveying path 2 by the arm 6. In other words, the conveyance path 2 is not affected by the diameter of the rotating body core. Therefore, there is no shortening of the conveyance path 2 that occurs when the conventional rotary table is downsized, and the number of units arranged along the conveyance path 2 can be maintained. That is, it is not necessary to reduce the function of the electronic component transport apparatus 1.

  As described above, in the electronic component conveying apparatus 1, the arm 6 is radially extended from the rotating body core intermittently rotated by the direct drive motor 7 to the annular conveying path 2, and the suction nozzle 3 is provided at the tip of the arm. The rotating body core is located concentrically and has a smaller diameter than the conveyance path 2. Since the rotating body 4 that supports the suction nozzle 3 and performs intermittent rotation is composed of the rotating body core and the arm 6 and is reduced in weight, the conveyance speed of the electronic component W is improved. Further, since the length of the transport path 2 is maintained, the number of various units can be maintained, and the function of the electronic component transport apparatus 1 is also maintained.

  For example, the rotating body core may be a lower manifold 41 that is interposed between the negative pressure generator and the suction nozzle 3 and has a pneumatic circuit therein. Thereby, the conventional rotary table can be eliminated, further weight reduction can be achieved, and the conveyance speed of the electronic component W can be improved.

  The flange 100 is not limited in size as long as it has a smaller diameter than the conveyance path 2, but it is desirable that the flange 100 function as a stay. This is because if the diameter of the flange 100 is excessively widened, the mass of the rotating body 4 is increased.

  Further, the first arm 61 extending from the flange 100 and having a bearing at the tip is detachably fixed to the flange 100 by fastening with a bolt 101 or the like. Thus, even if the first arm 61 or the second arm 63 or the suction nozzle 3 at the tip of the first arm 61 is damaged or malfunctioned, the flange 100 is lowered from the direct drive motor 7. It is not necessary to replace all of them, and only the place where damage or malfunction has occurred can be attached and detached, so that the maintenance labor can be reduced.

(Second Embodiment)
Next, the electronic component transport apparatus 1 according to the second embodiment will be described in detail with reference to the drawings. The same configurations and functions as those of the first embodiment are denoted by the same reference numerals and will be described in detail.

  As shown in FIG. 4, the direct drive motor 7 can be fixed above the lower manifold 41 and supported so that the lower manifold 41 is suspended from the upper side. The shaft of the direct drive motor 7 passes through the upper manifold 5 and is connected to the lower manifold 41 at the tip.

  The lower bottom surface of the lower manifold 41 is open. Therefore, the first arm 61 can be fixed to the lower bottom surface of the lower manifold 41. Since the flange 100 according to the first embodiment is a stay, the flange 100 is not necessary in this embodiment in which the first arm 61 can be fixed to the lower manifold 41. Therefore, the number of flanges 100 can be reduced, the weight of the rotating body 4 can be further reduced, and the rotational speed of the rotating body 4 can be further improved.

(Third embodiment)
Next, the electronic component transport apparatus 1 according to the third embodiment will be described in detail with reference to the drawings. In addition, about the same structure and function as 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  As shown in FIG. 5, in the electronic component transport apparatus 1, the lower manifold 41 and the flange 100 are physically separated. The lower manifold 41 and the flange 100 are supported by the shaft of the direct drive motor 7 and rotate intermittently. The flange 100 is a stay of the arm 6. That is, the flange 100 can be physically and functionally disconnected from the lower manifold. As a result, the flange 100 can be released from physical restrictions such as the lower manifold 41 sliding on the upper manifold 5, and the layout can be freely performed.

(Other embodiments)
Each embodiment of the present invention has been described above, but various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Electronic component conveying apparatus 2 Conveyance path 3 Suction nozzle 31 Opening 32 Through-hole 33 Hollow tube 4 Rotor 41 Lower manifold 42 Pneumatic circuit 43 Through-hole 44 Inlet 45 Outlet 46 Hollow tube 5 Upper manifold 51 Through-hole 6 Arm 61 1st arm 62 Bearing 63 2nd arm 7 Direct drive motor 8 Advancing / retracting drive device 91 Supply unit 92 Electrical characteristic measurement unit 93 Appearance inspection unit 94 Posture correction unit 95 Discharge container 96 Housing unit 100 Flange 101 Bolt W Electronic component

Claims (7)

An electronic component transport apparatus for transporting electronic components along an annular transport path,
A rotary motor;
A rotating body core positioned at the center of the transport path, having a smaller diameter than the transport path, and intermittently rotated by the rotary motor;
A plurality of arms extending radially from the rotating body core and extending tips on the transport path;
A suction nozzle provided at the tip of the arm, for sucking and holding electronic components on the transport path;
With
Sequentially transporting electronic components to various units for inspection, processing, posture correction, or classification of the electronic components arranged along the transport path;
An electronic component conveying device characterized by the above. A pneumatic circuit that is interposed between a negative pressure generator and the suction nozzle, and controls the negative pressure supply to the suction nozzle;
A hollow tube connecting the pneumatic circuit and the suction nozzle;
A manifold in which the pneumatic circuit is formed and intermittently rotated by the rotary motor;
With
The rotor core is the manifold;
The suction nozzle is fixed to the manifold via the arm, and extends from the manifold to be positioned on the transport path;
The electronic component conveying apparatus according to claim 1. The manifold is
Concentric with the manifold, larger in diameter than the manifold, concentric with the transport path, and having a disk-shaped stay smaller in diameter than the transport path,
The arm is fixed to the stay;
The electronic component conveying apparatus according to claim 2. The stay
Provided separately from the manifold, and intermittently rotated by the rotary motor;
The electronic component conveying apparatus according to claim 3. The stay
Provided integrally with the manifold and intermittently rotated by the rotary motor;
The electronic component conveying apparatus according to claim 3. The arm is
A first arm extending from the rotor core and having a bearing at a tip;
A second arm that is supported by the bearing and further extends to the transport path, and has the suction nozzle at an extension destination;
With
It further includes an advancing / retreating drive unit for the suction nozzle that is positioned on a rotation locus drawn by the bearing inside the transport path and that allows the second arm supported by the bearing to move along the bearing. ,
The electronic component conveying apparatus according to claim 1, wherein The first arm is detachably fixed to the rotor core;
The electronic component conveying apparatus according to claim 6.

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