JP3107661B2 - Vibration 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 a vibrating component feeder, and more particularly, to irradiating light to an electronic component such as a chip resistor or a capacitor, and causing the reflected light to be incident on a photoelectric conversion element, and The present invention relates to a vibrating component feeder that determines the front and back of a component based on the presence or absence of incident light, and aligns and conveys the front and back of the component.

[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 determine the front and back of the component by using a photoelectric detector has been proposed, for example, in Japanese Patent Application Laid-Open No. 2-48328.

The above-mentioned vibrating component feeder uses a V-shaped transfer path and an air reversing type elimination means for reversing parts by blowing air in a component front and back aligning apparatus. It is structured to be installed at each location.

[0006]

By the way, the elimination means for reversing parts by using air has poor reversal precision of parts and is difficult to cope with high-speed alignment. However, there is a problem that the structure becomes complicated and the manufacturing cost increases accordingly.

Therefore, according to the present invention, the parts to be extracted and the parts to be discharged are selected by a mechanical pusher system, and an air blowing type elimination means is used in an auxiliary manner to accurately align and extract the parts. It is an object of the present invention to provide a vibrating component feeder which can perform at high speed.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention transfers a part on a transfer path provided on a bowl along the transfer path by vibration, and the part has a dark mirror surface on one side. Reflection surface, the other surface is 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,
By this detection, the parts front and back aligning device provided in the middle of the transfer path of the bowl is operated to select the front and back of the component. A parts reversing device is installed, and a mechanical rejection means for reciprocating a needle with a voice coil type actuator is used for a first components reversing device located on the upstream side in the component moving direction, and a downstream side in the component moving direction. The configuration using an air ejection type elimination means is adopted for the second parts front and back aligning device located at (1).

[0009]

When the components moving on the transfer path of the bowl due to the vibration of the bowl pass through the alignment block portion of the front and back alignment device, the front and back are sorted by the photoelectric detector, and the component of the surface color to be taken out passes as it is, Opposite colored parts are discharged into the bowl.

The first component front and back aligning device uses mechanical rejection means for reciprocating the needle with a voice coil type actuator, so that it has good responsiveness and can cope with high-speed movement of components with high accuracy.

The second parts obverse / reverse aligning apparatus uses an air-type rejection means, and functions as an auxiliary because the first parts obverse / reverse aligning apparatus has a high function.

[0012]

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

FIGS. 1 and 2 show the overall structure of a vibrating component feeder, in which a spiral transfer path 2 is formed in a bowl 1. 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;

Referring to 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 remover 3. At the set downstream position, the alignment transfer path 5 connected to the downstream side of the connection transfer path 4, the first component front and back alignment device 6 and the second component front and back alignment device 7 according to the present invention.
In addition, a component attitude holding transfer path 8 is provided, a component return portion 9 is provided outside the aligned transfer path 5 and a return path 10 is provided inside, and a plurality of arc-shaped notches 11 are provided in the spiral transfer path 2. Is formed.

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 has an inverted L-shape with a fitting portion 15 that fits into the notch 12 without rattling 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 is provided which complements the upstream and downstream of the divided alignment transfer path 5 in a connected state. 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 angle portion of the alignment block 14, and a pressing plate abutted on the inclined surface 20. Both ends of 21 are fixed to the bowl 1 with screws 22.

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, thereby fixing the alignment block 14 in the notch 12 and attaching 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 notch 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 wide 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, as shown in FIGS. 10 and 11,
Reference numeral 41 denotes a casing made of a non-magnetic material such as aluminum, for example, and a cylindrical sleeve 41a is integrally formed at a front central portion thereof, and a rod-shaped operating shaft 4
2 is slidably supported via a slide bearing, and the operating shaft 4
A needle 43 for projecting the component A is protruded from the tip of the second member 2. 44 is a plurality of bolts 4 behind the casing 41.
5 is a magnetic field device fastened with 5
6 is sandwiched between a plate 47 and a pole 48 made of a magnetic material such as mild steel, and a central shaft 48a projecting from the center of the other pole 48 is inserted into a through hole 47a projecting from the center of one plate 47. A gap 49 is formed between the inner surface of the through hole 47a of the plate 47 and the outer surface of the center axis 48a of the pole 48, where a strong magnetic field is generated.

Reference numeral 50 denotes a bottomed cylindrical cap integrally fixed and attached to one end of the movable shaft 42. A bobbin 51 having a tip inserted into the magnetic field gap 49 is integrally attached to the outer peripheral surface thereof. A voice coil 52 is wound around an outer periphery of a front end portion facing the magnetic field gap 49 of the voice coil 51. Reference numeral 53 denotes a terminal mounting plate made of an electrical insulator such as bakelite, which is fastened to the inner wall of the casing 41 via a spacer 54 with bolts 55 and nuts 56. Both ends of the voice coil 52 are connected and fixed to both ends. The terminals 58, 58 are fastened and attached with the terminal screws 57, 57.

Reference numerals 59, 59 denote lead wires whose one ends are connected to terminals 58, 58 by soldering or the like, respectively.
The other end derived from the control electronic circuit (not shown) which receives an input signal of the photoelectric sensor and alternately outputs a plus voltage and a minus voltage when the photoelectric sensor detects out of a normal direction.
Is electrically connected to Reference numerals 60, 60 denote connecting leads connecting the terminals 58, 58 and the voice coil 52, and are sufficiently flexible so as to allow a high frequency back and forth movement of the voice coil 52.

Further, it also has a function of restricting the rotational movement of the voice coil 52. 61 and 62 are stoppers made of an elastic material such as synthetic resin rubber having a high damping property,
In order to stop the sliding of the operating shaft 42, the inner wall surface of the casing 41 and the second
The yoke 48 is attached to the end face of the central shaft 48a.

The elimination means 18 is such that the sleeve 41a is accommodated in the recess 17 of the alignment block 14, and the needle 43 attached to the tip of the operating shaft 42 is used as shown in FIG.
4, facing the hole 28 provided in the vertical wall of the transfer path 19,
During forward movement, it protrudes from the hole 28 onto the transfer 19, and this transfer path 1
The component A is pushed down from above onto the return path 10 provided in the bowl 1 and stands by behind the transfer path 19 when retreating, so that the movement of the part A along the transfer path 19 is not hindered. I have.

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 is prepared in 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 black side up, a black alignment block is used. Conversely, when taking out the part A with the white color facing upward, a white 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 component 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 FIGS. 1 and 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. Two types, a white and a diffusely reflecting surface, 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.

As shown in FIG. 12, the pneumatic elimination means 29 uses an MPI injector (fuel injection valve) for an automobile.
The plunger 74 reciprocates with the core 73, and the needle valve 75 at the front end is opened and closed by the movement of the plunger 74, and the air supplied to the air supply port 76 at the rear end is intermittently discharged from the nozzle 77 at the front end of the casing 71. It has a structure to inject into.

The elimination means 29 faces the outer end opening of the air passage 33 provided in the alignment block 31 at the tip of the nozzle 77, and opens the valve when the photoelectric detector 26 detects a different color component to release the air. 33, and the parts A are transported by the air blown out from the air blowing holes 34 to the transfer path 3.
2 is blown down into the return path 10 from above.

In the first and second parts obverse and reverse aligning devices 6 and 7, the aligning block 1 is arranged 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. .

The vibration component feeder according to the present invention has the above-described configuration, and the operation will be described below.

When a known torsional vibration force is applied to the bowl 1 into which a large number of parts A are put, a spiral transfer path 2 is thereby provided.
Are transported along, the notches 11 form the multi-row components A in one row, and move 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 led to the alignment transfer path 5, and as shown in FIG.
Since the runway is formed by the vertical wall and the inclined bottom wall, the vehicle slides on the inclined bottom wall in a single-layer single-row state with the front or back face up.

When the component A is to be taken out with the white surface facing upward, the first component front and back aligning device 6 and the second component front and back aligning device 7 use alignment blocks 14 and 31 having a white irregular reflection 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 white 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 having a black surface is the alignment block 1
4, the discharging means 18 is activated by the detection of black 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 black surface enters, the component A having a white surface is pushed down when the component A enters, so that only the component A having a white surface proceeds in series on the downstream side of the alignment transfer path 5. Part A then passes through a second part front and back alignment device 7.

When the component A having a black surface enters the transfer path 32 of the alignment block 31, the second component front and back aligning device 7 detects the photoelectric sensor 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 component 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, which has passed through the second component front / back aligning device 7, advances from the alignment transfer path 5 to the part attitude holding transfer path 8, and is in a single-layer single-row state with the white surface facing upward. From the take-out side end, it is transferred to a linear feeder (not shown).

Although the case where the component A is taken out with the white surface facing upward has been described as an example, when taking out the component with the black surface facing upward, 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 dark-colored specular reflection surface, and the photoelectric detectors 26 and 26 may be set so as to operate the elimination means 18 and 29 by detecting the white portion, thereby eliminating this. .

[0051]

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

(I) A parts front and back aligning device is installed at two positions on a transfer path provided in a bowl, and a needle is attached to a removing means of the parts front and back aligning device located on the upstream side in the component moving direction by a voice coil type actuator. Using the reciprocating mechanical elimination means, it has the agility to respond to high-speed movement of parts,
Parts can be arranged and taken out with high precision and efficiency.

(II) Since the mechanical elimination means is used, the parts can be aligned with high accuracy, and the pneumatic elimination means can be used in an auxiliary manner. Just by mounting, reliable alignment can be realized, and the structure can be simplified and the manufacturing cost can be reduced.

[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 a longitudinal sectional front view of a mechanical rejection unit.

FIG. 11 is a sectional view taken along arrows XX in FIG. 10;

FIG. 12 is a vertical sectional front view of the air-type exclusion means.

[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 outlet A part

Claims (2)

(57) [Claims] 1. A part on a transfer path provided in a bowl is transferred along the transfer path by vibration, and the part comprises a dark specular reflection surface on one side and a white irregular reflection surface on the other side. Irradiates the light from the light-emitting element, and detects whether the reflected light is incident on the light-receiving element of the photoelectric detector. Based on this detection, it activates the parts front and back alignment device provided in the middle of the bowl transfer path. In the vibrating component feeder that sorts the front and back of the component, the component front and back aligning device is installed at two positions in the middle of the transfer path provided in the bowl, and the first and second components are arranged on the upstream side in the component moving direction. Using a mechanical rejection device that reciprocates the needle with a voice coil type actuator for the component front and back alignment device, and using an air injection type rejection device for the second component front and back alignment device located downstream in the component movement direction Vibration Goods feeder. 2. The vibrating component feeder according to claim 1, wherein in the mechanical rejection means used in the first component front and back aligning device, the needle uses an industrial diamond tip.