JP4873682B2 - Parts feeder - Google Patents

Description

  The present invention relates to a parts feeder for transporting small electronic components such as semiconductor elements and supplying them to a processing apparatus that performs various processing steps.

  Small electronic components such as semiconductor elements are transported and delivered between various processing devices in the manufacturing process and the mounting process. In this way, parts feeders have been developed as devices for transporting and supplying electronic components to various processing devices. In general, vibrations are applied to the transport route for transporting components and the transport route. A vibration mechanism for continuously moving the parts, an escape mechanism for picking up and taking out the parts, and supplying the parts to the processing apparatus are provided.

  For example, the parts feeder described in Patent Document 1 is a combination of a circular vibration part feeder and a linear supply vibration feeder, and continuously conveys a large number of parts. Is picked up and taken out.

FIG. 4 schematically shows a supply vibration feeder in such a parts feeder. In this supply vibration feeder, the electronic components S arranged on the conveyance path 13 provided with the left and right guide portions 12 are sequentially conveyed on the conveyance path 13 by applying vibrations obliquely with respect to the conveyance direction. . The electronic component S transported to the end of the transport path 13 is controlled to stop and advance at a predetermined position by the stopper 22 and sequentially delivered to escape (cutout). When the electronic component S is received, the escape moves in parallel and delivers the electronic component S to the holding mechanism 4 provided in the conveying means for conveying between various processing steps such as appearance inspection and electrical inspection.
JP 63-218421 A

  In the conventional parts feeder as described above, as shown in FIG. 4, when the escape moves from the position where it receives the electronic component S from the transport path 13 to the position where it is delivered to the holding mechanism 4, If the component S is not sufficiently held, the electronic component S on the escape is displaced due to the movement of the escape, or the component falls into the gap 15 at the end of the conveyance path 13 generated between the conveyance path 13 and the escape. May end up. Then, when the escape is moved again to the conveyance path 13 side, the gap 15 may be clogged with parts.

  In addition, since the escape reciprocates between the position where the electronic component S is received from the transport path 13 and the position where the electronic component S is delivered to the holding mechanism 4, there is a limit to high-speed transport, which is inefficient. .

  Furthermore, as shown in FIG. 5A, when the electronic parts S to be transported are elongated, they are not transported in an orderly manner when transporting in the transport path 13. Therefore, when the electronic component S is placed on the escape, the posture of the electronic component S on the escape becomes unstable, the positioning accuracy is low, and the electronic component S falls from the escape due to the movement of the escape, or a suction error and suction Troubles such as clogging occurred.

  Further, since the elongated electronic component S is scattered when the components are sequentially conveyed by applying vibration, the leads are left and right with respect to the conveying direction as shown in FIG. It was not possible to carry by the normal method as positioned, and as shown in FIG. 5B, the carrying method was such that the leads were positioned in the front and rear directions with respect to the carrying direction. For this reason, as shown in FIG. 5C, the front and rear electronic components S may overlap each other, or the rear electronic component S may enter the gap between the guide and the preceding electronic component S. When such a situation occurs at the delivery position to the escape, for example, the two electronic components S are delivered while being overlapped. For example, there is no means for delivering the electronic components S in order with respect to the escape. It was necessary.

  The present invention has been proposed in order to solve the above-described problems of the prior art, and the object thereof is high positioning accuracy when placing parts on the escape, and stable transportation and removal of parts. It is to provide a parts feeder that makes it possible.

In order to achieve the above object, the invention described in claim 1 is a parts feeder that supplies a part to a conveying means that conveys the part while lifting the part between process processing mechanisms that perform various processes on the part. A transfer mechanism having a transfer path along which the component moves, and a transfer mechanism having a rotating unit that receives the component from the transfer mechanism while rotating and delivers the received component to the transfer unit, rotating means, the line segment a virtual line a which is extended to the outer periphery of said rotating means along from the end in the discharging direction of part of the transport mechanism, as a starting point the point of contact with the outer circumference of the virtual line segment a and said rotating means when a tangent extending in the direction of rotation of said rotating means and a virtual line B, are arranged so minor angle made on the opposite side to the rotation means formed by the virtual line a and the virtual line B is obtuse And such that said conveyor means overlap at least at the transfer position lifting the component, are arranged dived below the conveying means, said transfer mechanism, the rotating means concave groove shape from the top surface to the outer periphery of, and the transport A mounting portion that holds the components received by the rotating means, the depth direction being indented so that the depth direction coincides with the discharging direction of the transporting machine term when moved to the delivery position of the mechanism, the transport mechanism, and the rotating means; the said rotating means to receive position of the component is provided separately, the not covering the mounting portion of the receiving position from above, and and a cover to expose the delivery position of the conveying means of said rotating means , provided in the mounting portion so as to face obliquely downward, to said, to have a suction unit for sucking the received component toward the bottom of the central direction and the mounting portion of the rotating means .

According to the above aspect, when the rotating means receives a part from the transport path, the reciprocating movement is reciprocated between the transport mechanism having the transport path and the transport means for transporting the received part between the process processing mechanisms. Without rotating, the parts can be received from the transport path and transferred to the transport mechanism for transporting between the process processing mechanisms. Further, since the conveying mechanism and the rotating means can be installed adjacent to each other without generating a gap between the conveying path and the rotating means , the electronic component does not fall or clog the gap. The placement position and shape of the mounting portion, the cover, and the suction portion increase the positioning accuracy of the component placed on the component mounting portion, and enables such stable transportation and removal of the component.

According to a second aspect of the present invention, in the parts feeder according to the first aspect of the invention, the rotating means is arranged so that an outer peripheral rotation trajectory intersects with a circular trajectory of the conveying means at two points, and the transfer is performed. The mechanism may deliver the component to the conveying means at each of the two points.

According to the above aspect, depending on the type of the process processing mechanism, for example, the component placed on the rotating unit may hold the lead part in the vertical direction when the transport unit needs to hold the lead part in the horizontal direction. When necessary, by shifting the delivery position for each type of transport means, it is possible to deal with various types of process processing mechanisms, and versatility is enhanced.

According to a third aspect of the present invention, in the parts feeder according to the first or second aspect, the rotating means may be provided with four mounting portions arranged at equal intervals. .

According to a fourth aspect of the present invention, in the parts feeder according to any one of the first to third aspects of the present invention, the rotating means has a delivery error while placing an electronic component on the mounting portion on the rotating means. When the component discharge position is reached, a component discharge means is provided for discharging the electronic component by causing air to flow backward from the suction portion.

According to the above aspect, even when the electronic component placed on the rotating means is not picked up by the holding mechanism provided in the transport mechanism, it is not necessary to remove the component from the component mounting portion. It is possible to avoid a machine failure or the like caused by being left in the component mounting portion on the rotating means .

According to a fifth aspect of the present invention, in the parts feeder according to any one of the first to fourth aspects, the terminal portion of the transport path includes a stopper for stopping the transported parts, And a suction mechanism for controlling the stop and progress of the parts.

  According to the above aspect, for the components behind the electronic components mounted on the component mounting portion from the conveyance path, the movement of the electronic components is restricted by the interlocking of the vacuum stopper and the stopper installed in the conveyance mechanism. Without being connected to the electronic components that are mounted, only the final electronic components can be delivered in order according to the timing of receiving the rotary escaper, and the electronic components behind the final electronic components in the transport path More appropriate guidance is possible.

  ADVANTAGE OF THE INVENTION According to this invention, the positioning accuracy at the time of mounting components on an escape is high, can implement | achieve the stable conveyance and taking-out of components, and can provide the parts feeder which can be drive | operated at high speed.

  Next, the best mode for carrying out the present invention will be described with reference to FIGS.

[Configuration of the embodiment]
As shown in FIGS. 1 (a) and 1 (b), the parts feeder of the present embodiment is configured by a transport mechanism 1, a stopper mechanism 2, and an escape mechanism 3 having a rotary escape 31 that is a main part of the present invention. Has been.

The conveyance mechanism 1 includes a conveyance path 13 including a linear component conveyance surface 11 on which the electronic component S moves, a guide portion 12 that guides the left and right directions of the electronic component S on both sides of the electronic component S, and a conveyance path 13. It comprises a vacuum suction type vacuum stopper 21 constituting the stopper mechanism 2 provided at the end portion and a stopper 22 provided so as to be rotatable above the transport path 13.
The vacuum stopper 21 and the stopper 22 constituting the stopper mechanism 2 are attracted or lifted in conjunction with the rotation of the escape 3 described later.

  Timing of rotation (up and down) of the stopper 22 and intermittent rotation timing of the rotary escape 31 for moving the mounted component, or holding and releasing of the vacuum stopper 21 for temporarily stopping the final end component on the transport path 13 All timings are linked.

  The escape mechanism 3 includes a rotary escape 31 and a drive motor 5 that drives the rotary escape 31. The rotary escape 31 has four component mounting grooves 32 that receive the electronic components S from the transport mechanism 1 and four suction portions 33 that are directly connected to the component mounting grooves 32 arranged at equal intervals on the rotary escape 31. Four component mounting grooves 32 provided at equal intervals on the rotary escape 31 are shifted from the diameter L of the rotary escape 31 in the rotation direction, and an offset portion 16 is provided on the rotary escape 31. It is arranged on a parallel line M parallel to the diameter L.

  The component mounting groove 32 has a concave groove shape dug from the upper surface of the rotary escape 31. Further, a cover 34 is provided on the upper surface to guide the mounted component from both sides and the back or upper surface. , Play a role of positioning. In addition, a suction portion 33 that sucks the mounted electronic component S is provided on the lower surface on the back side of the component mounting groove 32, and the cover 34 provided on the upper surface is an electronic component mounted in the component mounting groove 32. It also plays a role in enhancing the adsorption effect of S.

  A holding mechanism 4 that receives the electronic component S from the rotary escape 31 is provided on the turntable 17 that is a transfer means for transferring to the process processing mechanism.

  In the rotary escape 31, as shown in FIG. 1A, delivery positions A and delivery positions B are picked up by the holding mechanism 4 that picks up the electronic component S for delivery to the transport means in the next process. In addition, a delivery error discharge position C is provided. That is, each time the rotary escape 31 is intermittently rotated by ¼, the electronic component S is sequentially moved to the delivery position A, the delivery position B, and the delivery error discharge position C.

[Operation of the embodiment]
The electronic components S sent to the transport path 13 of the transport mechanism 1 are sequentially transported in the direction of the escape mechanism 3 while being guided in the left-right direction on the component transport surface 11 by the guide portion 12 by vibration and air.

  The electronic component S transported to the end of the transport path 13 is temporarily stopped when the stopper 22 is rotated downward, and the component mounting groove 32 of the rotary escape 31 is stopped at a predetermined position. After that, the stopper 22 rotates upward, and the electronic component S at the final end is guided to the component mounting groove 32 of the rotary escape 31. At this time, the suction portion 33 directly connected to the component mounting groove 32 is operated to suck the electronic component S to be delivered, so that the electronic component S is predetermined using the component mounting groove 32 or the cover 34 of the rotary escape 31 as a guide. It is mounted at the position.

  Thereafter, at the same time as being mounted in the component mounting groove 32, the stopper 22 is lowered again, and the electronic component S <b> 1 to be delivered next is stopped, and at the same time, the rotary escape 31 is rotated by ¼ to reach the delivery position A. Move S1. The electronic component S1 that has moved to the delivery position A is sucked by the suction holding mechanism 4 and conveyed to the next process processing mechanism.

If the electronic component S is not picked up at the delivery position A, when the electronic component S moves to the delivery mistake discharge position C due to the rotation on the rotary escape 31, the presence or absence of the electronic component S is detected by the sensor. The electronic component S is forcibly discharged by making a determination and causing air to flow backward from the suction portion 33 toward the component mounting groove 32.
[Effect of the embodiment]

  According to the present embodiment, when the rotary escape 31 receives the electronic component S from the transport path 13, the electronic device S is received from the transport path 13 by rotating on the spot without reciprocating by parallel movement, and the holding mechanism. 4 can be handed over. Therefore, since it becomes possible to install adjacently without generating a gap between the conveyance path 13 and the rotary escape 31, the electronic component S falls between the conveyance path 13 and the rotary escape 31, There is no clogging. Moreover, since the rotary escape 31 rotates to move the placed electronic component S, it can be rotated at a higher speed than the conventional reciprocating motion, so that the electronic component S is efficiently conveyed. be able to.

  In addition, since the component mounting groove 32 disposed on the rotary escape 31 is formed in a concave groove shape, the electronic component S moved from the transport path 13 is surrounded by the component mounting groove 32 in three directions. In addition to being placed in a state, the electronic component S placed by the action of the suction portion 33 and the cover 34 is sucked, so that the positioning accuracy of the component is increased and the component can be transported stably.

  Further, the electronic component S that is left without being collected by the holding mechanism 4 at the delivery error discharge position C on the rotary escape 31 is forcibly discharged by causing the suction portion 33 to flow back air. Thereby, it is possible to avoid a failure such as the electronic component S being clogged in the component mounting groove 32 caused by the electronic component S being left in the component mounting groove 32 on the rotary escape 31.

  Further, as shown in FIG. 2A, the component mounting groove 32 is formed on the parallel line M so as to be shifted in the rotational direction from the diameter L of the rotary escape 31. After receiving the electronic component S12 from the electronic component S12, the electronic component S12 placed in the component mounting groove 32 on the rotary escape 31 is moved from the electronic component S13 at the final end of the transport path 13 along the rotation outer peripheral track of the rotary escape 31. It is transported to the transport means so as to leave. Therefore, as shown in FIG. 2B, the electronic component S12 is smoothly placed in the component mounting groove 32 without the leads of the rear electronic component S13 and the preceding electronic component S12 entering each other, and the holding mechanism 4 It is possible to deliver the electronic component S stably.

  When the electronic component S on the transport path 13 moves to the rotary escape 31, the stopper 22 and the vacuum stopper 21 operate in conjunction with each other so that the final electronic component S to be delivered to the escape mechanism 3 is When moving, the electronic component S thereafter is restricted from being moved by the vacuum stopper 21, and the electronic component S can be sent out in order in accordance with the reception timing of the rotary escape 31, so that the rotary escape from the transport path 13. The delivery to the component mounting groove 32 on 31 can be performed smoothly.

  In addition, since the holding mechanism 4 picks up the electronic component S to be transported to the next process on the rotary escape 31, two delivery positions are provided, not only a single next process processing mechanism but also a purpose. Accordingly, it is possible to connect to a plurality of process processing mechanisms. For example, when the conveying means needs to hold the lead portion in the horizontal direction or when the lead portion needs to be held in the vertical direction, by providing a plurality of component mounting grooves 32, various process processing mechanisms are provided. It can correspond to.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, as shown in FIG. 3, it is used as a satellite table 14 in each process processing mechanism such as test contact (electric characteristic inspection), marking, and appearance inspection. Is possible.

  The test contact processing process usually requires a longer processing time for each component than other process processing mechanisms. For this reason, the processing time for the test contact is rate-determined, which affects the productivity. As a countermeasure, if the concept of the rotary escape 31 is taken in and parts are passed to the satellite table 14 during the test, the main table can be rotated without waiting for the end of the test.

  Even in the marking process, if it is used as the satellite table 14, it is small and can be processed at high speed without taking up space. Similarly, in the appearance inspection process, if it is used as the satellite table 14, it can be installed compactly and can be processed at high speed.

The top view (a) and side view (b) which show the whole structure of the parts feeder in embodiment of this invention. The enlarged view which shows the structure of the escape mechanism in embodiment of this invention. The block diagram which shows other embodiment of this invention. The block diagram which shows the conventional escape mechanism. The block diagram which shows the conventional escape mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Conveyance mechanism 2 ... Stopper mechanism 3 ... Escape mechanism 4 ... Holding mechanism 5 ... Drive motor 11 ... Component conveyance surface 12 ... Guide part 13 ... Conveyance path 14 ... Satellite table 15 ... Gap 16 ... Offset part 17 ... Rotary table 21 ... Vacuum stopper 22 ... Stopper 31 ... Rotary escape 32 ... Part mounting groove 33 ... Suction part 34 ... Cover A, B ... Delivery position C ... Delivery error discharge position L ... Diameter M ... Parallel line S, S1, S12, S13 ... Electronic parts

Claims (5)

A parts feeder that supplies parts to a conveying means that conveys the parts while lifting the parts between process processing mechanisms that perform various processes on the parts,
A transport mechanism having a transport path along which the component moves;
A receiving and receiving mechanism having rotating means for receiving the parts from the conveying mechanism while rotating and delivering the received parts to the conveying means;
With
The rotating means includes
A line segment extending from the end of the transport mechanism to the outer periphery of the rotating means along the component discharge direction is a virtual line segment A, and a contact point between the virtual line segment A and the outer periphery of the rotating means is a starting point. When the tangent line extending in the rotation direction is the imaginary line B, the subordinate angle formed on the opposite side of the rotation means formed by the imaginary line segment A and the imaginary line B is arranged so as to be an obtuse angle,
And it is arranged under the transport means so as to overlap at least at the delivery position where the transport means lifts the component,
The transfer mechanism is
A concave groove-like shape on the outer periphery of the rotating means, and a part received by the rotating means that has been dug so that the depth direction coincides with the discharging direction of the transport mechanism when moved to the transfer position of the transport mechanism A mounting portion for holding,
Wherein the rotating means is provided separately, the not covering the mounting portion of the receiving position from above, and the at the delivery position of the transfer means to the receiving position of the part of the rotation means and said transport mechanism A cover exposing the top of the mounting part ;
An adsorbing portion that is provided in the mounting portion so as to face obliquely downward, and adsorbs the received component in a central direction of the rotating means and a bottom surface direction of the mounting portion ;
Having
Parts feeder characterized by. The rotating means includes
It is arranged so that the outer rotation trajectory intersects with the circular trajectory of the transport means at two points,
The transfer mechanism is
Delivering the parts to the conveying means at each of the two points;
The parts feeder according to claim 1.   The parts feeder according to claim 1 or 2, wherein the rotating means is provided with four mounting parts arranged at equal intervals.   The rotating means includes component discharging means for discharging the electronic component by causing air to flow backward from the suction portion when the delivery error component discharging position is reached while the electronic component is mounted on the mounting portion on the rotating means. The parts feeder according to any one of claims 1 to 3, wherein the parts feeder is provided.   The terminal part of the said conveyance path | route is equipped with the stopper which stops the conveyed component, and the adsorption | suction mechanism which controls the stop and progress of the component in the middle of conveyance, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. The parts feeder described in 1.

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