JP3107662B2 - Processing device for surplus parts in vibrating parts feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for processing surplus components in a vibrating component feeder, and more particularly, to irradiating light to an electronic component such as a chip resistor or a capacitor moving along an alignment transfer path. The reflected light is incident on the photoelectric conversion element, and the front and back of the component is determined based on the presence or absence of the light quantity. The present invention relates to a processing apparatus for surplus components that can be moved in a single layer.

[0002]

2. Description of the Related Art For example, small electronic components such as chip resistors and capacitors externally attached to a plate-like integrated circuit are:
Structural features that the surface is vitreous and is a mirror-reflecting surface of dark color such as black, the back surface is formed as a diffuse reflection surface of white ceramics, the surface has good light reflectivity, and the back surface has poor light reflectivity. Having.

[0003] When mounting such electronic components at a predetermined position on an integrated circuit or as a package to be mounted on a tape at regular intervals, it is necessary to sort the front surface and the back surface, and such an operation is performed quickly. And to do it correctly,
Parts sorting must be automated.

Therefore, a vibrating component feeder that utilizes the above-described structural features of components to discriminate the front and back of the component using a photoelectric detector has been proposed, for example, in Japanese Patent Laid-Open No. 60-228318.

In such a vibrating component feeder, a device for aligning the front and back of a component is provided in the middle of an alignment transfer path provided on the inner periphery of the bowl, and the front and back of the component moving on the alignment transfer path due to the torsional vibration of the bowl. Since it is necessary to sort and return the different color components into the bowl, it is necessary to move the components in a single row and a single layer on the alignment transfer.

[0006] For this reason, a processing apparatus for returning surplus parts into the bowl when a large number of parts that move from inside the bowl toward the alignment transfer path overlap each other vertically or enter the alignment transfer path in a parallel state. Must be installed.

A conventional surplus parts processing apparatus is disclosed in
As shown in No. 15626, a vertical hole is provided outside the alignment transfer path, a horizontal hole communicating with the lower end of the vertical hole is penetrated into the inside of the bowl, and a surplus part that has climbed over the vertical side wall of the alignment transfer path is lengthened. The part is dropped into the hole, and then the part is returned to the bowl by the side hole.

[0008]

By the way, since the conventional processing structure described above is constituted by a combination of a vertical hole and a horizontal hole, it takes time and effort to process the bowl and a structure in which parts move in the hole. In this case, there is a problem that parts cannot be reliably returned.

Further, since a horizontal hole must be formed below the alignment transfer path, it is necessary to secure a space above and below for providing a horizontal hole in the bowl. Is difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for processing surplus components in a vibrating component feeder in which processing of a bowl is simple, no clogging of components occurs, and space can be easily secured.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, components on an alignment transfer path provided in a bowl are transferred along the transfer path by vibration, and the parts have a dark surface on one side. The specular reflection surface, the other surface consists of a white irregular reflection surface, irradiates this part with light from the light emitting element of the photoelectric detector, and detects whether the reflected light is incident on the light receiving element of the photoelectric detector, Based on this detection, a component front and back aligning device provided in the middle of the bowl alignment transfer path is operated, and in a vibrating component feeder that sorts the front and back of a component, a transfer track for surplus components is provided outside the alignment transfer path. The transfer track is gradually raised from the rear end to the front end in the component moving direction, and a return portion is provided at the front end side of the transfer track so as to protrude into the bowl over the alignment transfer path. Parts It is obtained by adopting a configuration in which so as to fall into the bowl in parts.

[0012]

When the components that have entered the bowl transfer path due to the vibration of the bowl are in a parallel state, the outer parts fall into the transfer track due to the centrifugal force, advance to the tip side along the transfer track, and return. Is returned to the bowl.

[0013] Since the transfer truck is inclined so that the leading end thereof rises, and the return portion is a three-dimensional crossover straddling the alignment transfer path, the upper space of the bowl can be effectively used and the movement of the parts is clogged. There is no.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 show the entire structure of a vibrating component feeder, in which a spiral transfer path 2 is formed in a bowl 1, and this bowl 1 is, as is well known, a movable core, a leaf spring, an electromagnet and the like. A torsional vibration force is applied by a vibration driving structure comprising: a rectangular plate-like component A such as a chip-shaped resistor or a capacitor;

In FIG. 1, a bowl 1 has a component removing device 3 located substantially in the middle of the transfer path 2 from the upstream side to the downstream side of the spiral transfer path 2, and about one turn from the removal apparatus 3. At a position on the downstream side of the communication transfer path 4, an alignment transfer path 5 connected to the downstream side of the communication transfer path 4, a first component front and back alignment device 6, a second component front and back alignment device 7, and a component posture holding A transfer path 8 is provided, a processing device 9 for surplus components is provided outside the alignment transfer path 5 and a return path 10 is provided inside, and a plurality of arc-shaped notches 11 are formed in the spiral transfer path 2. I have.

The transfer path 2 of the bowl 1 and the communication transfer path 4,
As shown in FIGS. 3 and 4, the alignment transfer path 5 and the posture holding transfer path 8 form a runway with a vertical wall and a bottom wall inclined at an angle of 75 ° with respect to the wall. A supported by
Is designed to pass through without contacting the corners of the runway, and the cross-sectional shape of such a runway does not require extremely challenging shape accuracy in the processing of the runway, the holding of part A is good, and Has an advantage that the stability of the microchip resistor is also increased, which is an important factor particularly for transporting the micro chip resistor.

As shown in FIGS. 1 to 7, the first component obverse and reverse aligning device 6 is provided with a rectangular notch 12 at an upper position on the outer periphery of the bowl 1 so as to divide the alignment transfer path 5, and
The lower part of 2 is a right-angled saddle part 13, and an alignment block 14 is detachably fitted in the notch 12.

The alignment block 14 is formed into an inverted L-shape by a fitting portion 15 which fits into the notch 12 without looseness and a contact portion 16 with the outer surface of the bowl provided at the lower part on the outside. The alignment block 14 is formed in the shape of a yoke with a cutout 17 provided from the lower half of the 15 to the contact portion 16 so as to be opened at the lower surface, and a component removing means 18 to be described later is accommodated in the cutout 17. .

The side wall surface of the alignment block 14 facing the inside of the bowl 1 is formed in substantially the same arc shape as the side wall surface forming the alignment transfer path 5 of the bowl 1, and the side wall surface is formed by a notch 12. A transfer path 19 that complements the upstream and downstream of the divided alignment transfer path 5 in a connected state is provided, and this transfer path 19 also forms a runway with a vertical wall and a bottom wall inclined at an angle of 75 ° with respect to the vertical wall. doing. The alignment transfer path 5 and the transfer path 19 of the alignment block 14 are designed so as to be concentric with the axis of the bowl 1 and horizontal so that the component A can be transferred as smoothly and as quickly as possible.

When the width of the alignment block 14 is set short, the inner wall and the transfer path 19 may be formed in a straight line.

In order to removably fix the alignment block 14 to the bowl 1, an inclined surface 20 which is obliquely cut is provided at an outer corner of the alignment block 14.
The two ends of the pressing plate 21 abutted against the
Is to be fixed to.

As shown in FIG. 6, the pressing plate 21 is formed in a mountain shape in which the contact surface with the inclined surface 20 is higher at the center.
The inclined surface 20 of the alignment block 14 is pressed at its center, and the push plate 21 has a round hole 2 into which a screw 22 is inserted at one end.
And a notch 24 through which the screw 22 is inserted at the other end.
Are provided, and a notch 1 is provided on the outer peripheral portion of the bowl 1.
Screw holes 25 for screwing the screws 22 are provided at both sides sandwiching the screw 2.

The holding plate 21 presses the inclined surface 20 of the alignment block 14 by screwing the screws 22 at both ends into the screw holes 25 to fix the alignment block 14 in the notch 12 and to attach the alignment block 14. When removing, the two screws 22 are slightly loosened, and the holding plate 21 may be rotated around the screw 22 of the round hole 23 in the direction in which the notch 24 is separated from the screw 22. By performing the reverse operation, the replacement operation of the alignment block 14 can be performed easily and speedily.

When the alignment block 14 is fixed to the bowl 1, the width direction of the alignment block 14 is fixed by both sides of the cutouts 12. The inward and outward fixing of the bowl 1 can be performed simultaneously at one location, and the inverted L-shaped alignment block 14 is pressed and fixed obliquely to the saddle portion 13 of the bowl 1 formed at a right angle, thereby fixing the inner wall of the bowl 1 to the inner wall. A high-precision fixing with no steps can be reproduced without skill, and the transfer of the part A is not hindered.

Further, the width direction of the alignment block 14 is tightly fitted on both sides of the notch 12 provided in the bowl 1 with a large area of abutting portion, and withstands a large vibration acceleration due to the high frequency vibration of the bowl 1. To a fixed state.

The transfer path 19 in the alignment block 14
As shown in FIG. 3, a photoelectric detector 26 for detecting the front and back of the component A passing through the transfer path 19 is disposed at the center of the component A and obliquely above the component A, and irradiates the component A with light from the light emitting element. Then, it is detected whether or not the reflected light is incident on the light receiving element, and the component elimination means 18 is operated by this detection.

As the elimination means 18, a voice coil type actuator of a mechanical pusher type is used.
This actuator causes an electric current to flow through a control electronic circuit in accordance with an output signal of the photoelectric detector 26 to a coil disposed in a magnetic field gap, and reciprocates a pusher by utilizing repulsion of a magnetic field formed at that time. And has the agility to easily respond to the high-speed movement of the part A.

The elimination means 18 has a distal end which fits in the notch 17 of the alignment block 14 and a pin 27 attached to the distal end of the pusher is provided on a vertical wall in the transfer path 19 of the alignment block 14 as shown in FIG. The component A protrudes from the hole 28 onto the transfer path 19 at the time of forward movement, and the part A is pushed down from the transfer path 19 into the return path 10 provided in the bowl 1, and is rearward of the transfer path 19 at the time of retreat. It is arranged to stand by and not to hinder the movement of the part A along the transfer path 19.

Therefore, when replacing the alignment block 14,
The elimination means 18 is left as it is, and the alignment block 14
Only can be replaced.

The alignment block 14 has two types, one having a dark glossy surface such as black or the like and one having a white and irregular reflection surface such as aluminum. It is designed to be replaced according to the degree of reflection.

That is, the component A is an electronic component in which one surface is a dark specular reflection surface such as black and the other surface is a white irregular reflection surface. When the component A is taken out with the white side facing upward, a white alignment block is used. Conversely, when taking out the part A with the black color facing upward, a black alignment block is used.

In this way, the component A to be eliminated by the exclusion means 18 by detecting the surface with the photoelectric detector 26
The upper surface and the color of the transfer path 19 of the alignment block greatly differ, and the detection accuracy of the rejected component by the photoelectric detector 26 is greatly improved, so that the component having the different color on the upper surface can be reliably removed.

Next, the second component front and back aligning device 7 eliminates, in the above-described first component front and back aligning device 6, when a different color component is mixed in a part to be taken out and performs alignment. It is provided in order to improve the reliability, and is substantially the same as the first component front and back alignment device 6 except that the pneumatic type is used for the elimination means 29. Substitute.

As shown in FIGS. 8 and 9, the alignment block 31 fitted and mounted in the notch 30 of the bowl 1 is formed in an inverted L-shape, and the alignment transfer path 5 is formed on the inner side wall facing the bowl 1.
And a supplementary transfer path 32 is provided. A small-diameter air outlet hole is provided in which the tip of an air passage 33 provided from the outer surface side to the inner surface side is opened at the vertical wall surface of the transfer path 32 at the center of the alignment block 14. 34.

As shown in FIG. 1 and FIG. 2, this alignment block 31 is detachably fixed to the bowl 1 by the same means as the first component front and back alignment device 6, and has a dark glossy surface. And white and irregularly-reflecting surfaces are prepared, and the components to be selected are selected and used under the same conditions as the alignment block 14 of the first component front and back alignment device 6.

The pneumatic elimination means 29 is configured to blow air from an air supply source from a small-diameter nozzle 35 at the tip by opening and closing a valve mechanism. It faces close to the outer surface opening of the passage 33, opens when the photoelectric detector 26 detects a different color component, supplies air to the air passage 33, and sends the component A on the transfer path 32 by air ejected from the air outlet 34. And blows down into the return path 10.

In the first and second parts obverse and reverse aligning devices 6 and 7, the aligning block 1 with the return path 10 therebetween.
Parts drop guides 36 and 37 are attached at positions facing the parts 4 and 16 so as to surely drop the part A from the transfer paths 19 and 32 into the return path 10 as shown in FIGS. .

In the above-mentioned vibrating component feeder, the connecting transfer path 4 is bent so that its rear end is connected to the front end of the transfer path 2 and protrudes outward as shown in FIG. The communication transfer path 4 is formed as a concave groove in which a plurality of components A can move in a parallel state.

The rear end portion 5x of the alignment transfer path 5 starts from a position closer to the inner periphery of the rear end opening of the communication transfer path 4 and is shown in FIG.
As shown in FIG. 1A, the upper surface of the side wall is formed of a bottom surface rising upward and the side wall of the inner surface side.

The surplus parts processing device 9 is arranged such that, at the outer periphery of the alignment transfer path 5, the rear end starts from a position closer to the outer periphery at the front end of the communication transfer path 4, and the front end is located before the first parts front and back alignment apparatus 6. An arcuate transfer track 41 ending is provided, and a return portion 42 is provided at the tip end side of the transfer track 41 so as to straddle the alignment transfer path 5 and protrude inside the bowl 1 in a three-dimensional crossover state.

In the transfer truck 41, a wide groove 43 is provided in the bowl 1 and the rear end of the groove 43 is formed as a short horizontal portion 43a, and as shown in FIG. The bottom surface in the range up to the front end of the groove 43 is an inclined surface that gradually rises toward the front end side, and an arc-shaped reflux chute 45 is fitted into the concave groove 43 so as to overlap the bottom surface and fixed. Is formed so as to be inclined upward at the tip.

The recirculation chute 45 has a component moving path 46 provided on the surface thereof in a concave shape along the longitudinal direction. The upper surface of the recirculation chute 45 on the distal end side has an inner periphery as shown in FIG. The position is higher than the alignment transfer path 5 located on the side.

The return portion 42 is provided with a rectangular plate 48 on a stepped portion 47 provided on the upper surface on the distal end side of the reflux chute 45.
The plate 48 is formed so as to protrude in a downwardly inclined manner, and a rising wall 49 for guiding the component A into the bowl 1 is provided on a side edge of the distal end side of the plate 48.

In the case shown in the figure, the transfer track 41 is formed so as to be inclined upward at the tip by fitting a separate reflux chute 45 into the concave groove 43, but the transfer track 41 is cut directly on the surface of the bowl 1. You may make it.

The processing device for surplus parts according to the present invention has the above-described configuration, and the operation thereof will be described below.

When a known torsional vibration force is applied to the bowl 1 into which a large number of parts A have been put, a spiral transfer path 2 is thereby provided.
A is transported along and moves downstream. When the end of the transfer path 2 reaches the communication transfer path 4, most of the parts A are directed in the transfer direction after passing through the connection transfer path 4 under the action of the cross-sectional shape of the transfer path 4. In this state, it is guided to the alignment transfer path 5, and the alignment transfer path 5 has a runway formed by the vertical wall and the inclined bottom wall as shown in FIG. Sliding on the bottom wall in a single layer single row.

The component A that has reached the leading end of the communication transfer path 4 is directed to the alignment transfer path 5, but at this time, the rear end 5x
In FIG. 1, when a plurality of parts A move in a parallel state,
As shown in FIG. 1 (A), the parts located on the outside
1, moves forward along the track 41, and is returned into the bowl 1 from the return portion 42 on the distal end side.

When the part A moves in a state where a plurality of parts are stacked, as shown in FIG. 11A, the upper part is moved from the side wall of the rear end portion 5x of the alignment transfer path to the inclined surface 5y. And is returned into the bowl 1.

Further, at the rear end portion 5x of the aligned transfer path, even when the components are arranged inside the components on the rear end portion 5x of the transfer path, they fall inside the bowl 1 by the inclined surface 5y.

As described above, of the parts moving toward the alignment transfer path 5 by the processing apparatus 9, the surplus parts will be returned into the bowl 1, and therefore, the alignment transfer path 5 will be replaced with a single row single layer. The part A moves in the state.

Now, when taking out the part A with the black surface facing upward, the first component front and back alignment device 6 and the second component front and back alignment device 7 use alignment blocks 14 and 31 having a dark mirror-reflecting surface. .

Part A moving downstream on the alignment transfer path 5
Is the alignment block 1 in the first component front and back alignment device 6.
4, the surface of the photodetector 26
When the surface of the component A is a black surface, the discharging unit 18 does not operate, and the component A passes through the transfer path 19 and moves downstream.

Conversely, the component A whose surface is white is the alignment block 1.
4, the discharging means 18 is activated by the detection of white light by the light emission of the photoelectric detector 26, and the component A is pushed down from the transfer path 19 to the return path 10.

As described above, the first parts front and back aligning device 6
When a component A having a white surface enters and pushes down the component A, only a component A having a black surface advances in series on the downstream side of the alignment transfer path 5, and these components A proceed. Part A then passes through a second part front and back alignment device 7.

When the component A whose surface is white enters the transfer path 32 of the alignment block 31, the second component front and back aligning device 7 detects the photoelectric detector 26 and removes the component 29.
Is operated, and the component A is blown down from the transfer path 28 into the return path 10 by the air blown out from the air blowout hole 28.

The first parts obverse and reverse aligning device 6 includes
Since a mechanical pusher type voice coil type actuator is used for 8, the response is good and the parts A passing at high speed can be reliably eliminated by sorting.
Although a different-color component can be prevented from passing downstream, there is a second component-front / back-side alignment device 7 in order to eliminate a different-color component in the event that a mixed component has passed through, and therefore the second component-front / back-side alignment device 7 is eliminated. The number of operations of the means 29 is extremely smaller than that of the first component front and back aligning device 6, and the means 29 can sufficiently cope with the sorting even by using the pneumatic mechanism.

The component A that has passed through the second component front / back aligning device 7 proceeds from the alignment transfer path 5 to the part attitude holding transfer path 8 and is placed in a single-layer single-row state with the black surface facing upward. From the take-out side end, it is transferred to a linear feeder (not shown).

In the above description, the component A is arranged and taken out with the black side facing up. However, when taking out the component with the white side facing up, the first and second component obverse and reverse aligning devices 6 and 7 are arranged. The blocks 14 and 31 may be replaced with those having a white surface and irregular reflection surfaces, and the photoelectric detectors 26 and 26 may be set so as to operate the elimination means 18 and 29 by detecting the black portion, thereby eliminating this.

[0060]

As described above, according to the present invention, the configuration as described above has the following effects.

(I) The transfer track for the surplus parts is gradually raised from the rear end to the front end in the component moving direction outside the alignment transfer path, and the surplus parts are three-dimensionally crossed from the upper part of the alignment transfer path into the bowl. , The processing of the surplus parts can be performed using the upper surface space of the bowl, and the processing apparatus can be installed even if there is not enough room in the vertical thickness of the bowl.

(II) Since the transfer track only needs to be formed on the surface of the bowl, the processing of the bowl becomes easy and the production cost can be reduced.

(III) The transfer line can be constituted only by grooves,
There is no inconvenience that parts are clogged on the way, and surplus parts can be reliably returned to the bowl.

[Brief description of the drawings]

FIG. 1 is a plan view of a vibrating component feeder using a component front and back aligning apparatus according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a longitudinal sectional view showing a first component front and back aligning device in the same.

FIG. 4 is a longitudinal sectional view in which main parts of the above are enlarged.

FIG. 5 is an exploded perspective view showing the structure of the main part.

FIG. 6 is an exploded perspective view showing a fixing structure of the alignment block in the above.

FIG. 7 is a rear view showing the inner side of the alignment block.

FIG. 8 is a longitudinal sectional view showing a second component front and back aligning device.

9A is an enlarged cross-sectional view of the alignment block used in the above embodiment, and FIG. 9B is a rear view showing the inner surface side of the embodiment.

FIG. 10 is an enlarged plan view showing a processing device for a surplus part.

11A is an enlarged sectional view taken along arrow XX in FIG. 10, and FIG. 11B is an enlarged sectional view taken along arrow YY in FIG.

12 is a cutaway side view of a main part of FIG. 10;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bowl 2 transfer path 3 parts elimination device 4 communication transfer path 5 alignment transfer path 6 first parts front and back alignment apparatus 7 second parts front and back alignment apparatus 8 parts attitude holding transfer path 9 return section 10 return path 12 notch 13 saddle section 14 Alignment block 18 Elimination means 19 Transfer path 20 Inclined surface 21 Push plate 22 Screw 25 Screw hole 29 Elimination means 30 Notch 31 Alignment block 32 Transfer path 34 Air blowing hole 41 Transfer track 42 Return part 45 Reflux chute A parts

Claims (1)

(57) [Claims] 1. A component on an alignment transfer path provided in a bowl is transferred by vibration along the transfer path, and one part is formed of a dark specular reflection surface and the other is a white irregular reflection surface. Irradiates the light from the light-emitting element of the container, and detects whether or not the reflected light is incident on the light-receiving element of the photoelectric detector. In the vibrating parts feeder, which sorts the front and back of parts, a transfer truck for surplus parts is provided outside the alignment transfer path,
The transfer truck is gradually raised from the rear end to the front end in the component moving direction, and a return portion is provided on the front end side of the transfer track so as to protrude into the bowl over the alignment transfer path, and the component that has moved the transfer track is provided. A processing device for surplus components in a vibrating component feeder in which a return part is dropped into a bowl.