JPS6353083B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a parts sorting device in a vibrating parts feeder.

A vibrating parts feeder is generally called a parts feeder, and in most conventional parts feeders, torsional vibration is applied to a bowl-shaped container (ball) that has a spiral track inside.
The parts on the track are transferred, and one part is supplied to the next process from the end of the track.
In this case, it is usually required to be supplied in a constant posture. For this purpose, various sorting devices have been developed depending on the shape and properties of the parts to be supplied.
For the parts 1 shown in FIGS. 1 and 2, either no sorting action is performed or the sorting efficiency is very low. That is, the part 1 shown in FIGS. 1 and 2
is called a mini power transistor, and has a plurality of electrodes 1a, 1b, and 1c attached to one side, and one electrode 1d attached to the other side. These parts are extremely small parts, and a large amount of them are thrown into the bowl. These parts 1
Conventional sorting devices have been unable or insufficient to feed the materials in the direction of arrow A on the transfer path 2 in the attitude shown in FIG.

The present invention has been made in view of the above-mentioned points, and can efficiently produce a component having a plurality of protrusions below one side and one protrusion downwardly on the other side with a width larger than each of the plurality of protrusions. An object of the present invention is to provide a parts sorting device for a vibrating parts feeder that can sort parts. According to the present invention, the present invention provides a parts sorting device for a vibrating parts feeder that transports parts on a transfer path by vibration, the transfer path being inclined downwardly to one side with respect to the transport direction of the parts; a first sorting section having a groove formed in the one side along the transfer direction, and provided with a first exclusion member having an edge portion above the transfer path that slopes toward the other side with respect to the transfer direction; and; provided on the downstream side of the first sorting section, the transfer path is inclined downward to the one side with respect to the component transfer direction, and cutouts of a predetermined width are provided at predetermined intervals above the transfer path. a second feeding section provided with a second removing member having a plurality of second removing members; Components having one second protrusion with a width larger than the width of the second protrusion facing downward are transferred in the first transport section while the protrusion of the component is in contact with the edge of the first removal member. The parts facing upward are guided to the other side and removed from the transfer path to the lower part of the other side, and the parts facing upward are fitted with the protrusions in the grooves to remove the parts from the first removal member. , and the parts that have been transferred in the second sorting section with the one side of the face-up parts facing the one side of the transfer path are transported at the edge of the transfer path. When each of the plurality of first protrusions is aligned with the notch due to the reversal action of gravity, the first protrusion passes through this and is expelled to the lower side of the other side of the transfer path, and the one of the parts facing upward is removed. Even if the second protrusion is aligned with the notch, the parts transferred with the side surface facing the other side of the transfer path do not pass through the second protrusion and continue along the transfer path as they are. This is achieved by a component sorting device in a vibrating component feeder, which is characterized in that the component is passed under the removal member.

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

The vibrating parts feeder applied to this embodiment is also called a linear parts feeder, and as shown in FIGS. 3 to 5, it has a first trough 3 that extends linearly, and is arranged in parallel with the first trough 3. The supply trough 50 is provided with a second trough 4 and a supply trough 50 connected and fixed to the second trough 4. The second trough 4 includes a single-row sorting section 10, which will be described in detail later, a front/back discriminating sorting section 11 and a front part sorting section 12 according to the present invention, and an overflow state eliminating section 13.

Both vibration drive units for the troughs 3 and 4 are electromagnetic drive units, and one vibration drive unit is arranged below both the troughs 3 and 4 and is connected to an electromagnet 19 fixed on a common drive unit mounting base 18. , a coil 20a wound around one of the yoke parts, and a movable core 21a fixed to the first movable part mounting block 14 integral with the first trough 3. 1st
The movable part mounting block 14 is fixed to the lower surface of the first trough 3 and is connected to the base 18 by a pair of leaf springs 16. The base 18 is supported on a base 25 by a vibration isolating mechanism which will be described later. With the above arrangement, when the coil 20a of the electromagnet 19 is energized with alternating current, the first trough 3 vibrates in the direction indicated by the arrow a.

The other vibration drive unit is similarly configured, and includes an electromagnet 19 fixed on the above-mentioned common mounting base 18.
A coil 20b is wound around the other yoke part of the electromagnet 19, and a movable core 21 is fixed to the second movable part mounting block 15 which is integral with the second trough 4.
It consists of b. Second moving part mounting block 1
5 is fixed to the lower surface of the second trough 4, and the base 18
and are connected by a pair of leaf springs 17. With the above arrangement, the coil 20 of the electromagnet 19
When AC is applied to b, the second trough 4 vibrates in the direction indicated by the dotted arrow b.

Although not shown, the amount of current applied to both coils 20a and 20b is controlled by independent control means, for example, variable resistors. These control means are connected to a common AC power source. Therefore, electromagnet 1
9, the movable cores 21a and 21b receive suction forces in opposite directions, and the swing widths of the troughs 3 and 4 are controlled independently of each other.

When the first trough 3 vibrates in the direction of arrow a, the parts inside the trough 3 receive this vibration force and are transferred to the right in FIG.
When oscillates in the direction of arrow b, the parts of this trough 4 are transferred to the left.

Note that according to this embodiment, the above-mentioned coil 20
As shown in FIG. 4, the lead wires a and 20b are bundled together with a cable 22 and led out through an oblique through hole 24 formed at the end of the base 18. One end of the cable 22 is fixed onto the base 18 by a stopper 23.

Next, the vibration isolation mechanism that supports the drive unit mounting base 18 will be explained.

That is, the drive unit mounting base 18 has vibration-proof plate springs 26a, 26 mounted on a base 25 disposed below.
b, 31a, and 31b. Leaf spring 2
6a, 26b, 31a, and 31b are fixed to the drive unit mounting base 18 and the base 25 by bolts 29, 30, 34, and 35, respectively, at both ends. The base 25 may simply be placed on the installation stand S or may be fixed thereto with bolts. Anti-vibration plate spring 2
Spacers 27, 28 and 32, 33 are interposed between 6a and 26b and 31a and 31b, thereby maintaining a predetermined distance between these upper and lower leaf springs. This arrangement of the leaf springs allows the leaf springs 26a, 26b and 31a, 31b to have sufficiently large bending rigidity in the lateral direction with respect to the longitudinal direction (left-right direction in the figure). Base 25
Through-holes 36, 37 are formed at both ends of the plate and are used when fixing the vibration-proofing leaf springs 26a, 26b, 31a, 31b to the base 18 with bolts 29, 34.

When the electromagnetic coils 20a and 20b are excited, the first
The trough 3 and the second trough 4 vibrate as described above, and their reaction force causes the driving leaf spring 1 to vibrate.
6, 17 to the base 18. However, since the vibrations of both troughs 3 and 4 are in opposite phases, the horizontal components cancel each other out, and the vertical components are phase-added. Anti-vibration plate springs 26a, 26b, 31a, 31
b is due to this vertical component reaction force, the bolt 3
0.35, a bending motion is performed using the fixed end as a fulcrum, and the spring constant in this bending direction is its length,
That is, it can be made as small as desired by increasing the length in the left and right direction in the figure. Therefore, the vibration isolating leaf springs 26a, 26b, 31a, 31 can be easily removed without increasing the height of the entire device.
The bending spring constant of b can be made small. In other words, the mass of the entire device and the vibration isolating leaf springs 26a, 2 can be reduced without increasing the mass of the base 18 that receives the reaction force.
The resonance frequency determined by the bending spring constants of 6b, 31a, and 31b can be made sufficiently lower than the excitation frequency of the excitation parts 19-21. Therefore, the reaction force transmission rate to the base 25 can be made sufficiently small. That is, a sufficient vibration damping effect can be obtained. Moreover, spacers 27, 28, 32, 3 are provided between the leaf springs 26a and 26b and between 31a and 31b.
3 is provided with a predetermined distance in the vertical direction, the bending rigidity in the lateral direction is sufficiently large, and lateral vibration in the longitudinal direction of both troughs 3 and 4 is prevented.

The first trough 3 consists of a side wall 3a, an upper transfer surface 5 and a lower transfer surface 6 that are inclined upward in the transfer direction, and one side in the transfer direction, that is, the second trough 4 side is open. Also, the first trough of the second trough 4
The trough 3 side is also open. Therefore, the gap between the first trough 3 and the second trough 4, as shown in FIG. 3, is sufficiently small and sized so that the parts 1 to be transferred will not fall therefrom.

The upper transfer surface 5 and the lower transfer surface 6 in the first trough 3 are inclined upward in the transfer direction at substantially the same angle as shown by the chain line in FIG. 4, and as clearly shown in FIG. The lower transfer surface 6 is lower than the upper transfer surface 5. Moreover, the upper transfer surface 5 and the lower transfer surface 6 are directed outward (toward the right in FIG. 6).
The starting end of the upper transfer surface 5 is formed at a right angle as shown in FIG. It is designed to lead to the 4th side. The terminal end of the lower transfer surface 6 is formed in an arc shape,
This allows the parts to be guided to the second trough 4 side.

The starting end 8 of the second trough 4 is on the same level as the terminal end 7 of the first trough 3, but it is slightly inclined downward in the opposite direction to the first trough 3 side, and the curved surface of the side wall end The parts 1 and 8a are transferred to the single-row sorting unit 1.
It functions to guide you to 0. The sorting sections and sorting sections 10, 11, and 12 are configured to be aligned at substantially the same level, but a trough section 9 is formed in the second trough 4 in parallel thereto. This trough 9 is horizontal or slightly inclined upward in the transport direction, and includes the starting end 8, each sorting section, and the sorting section 10, 1.
Components 1, which have a lower level than those of Components 1 and 12 and have fallen here from the starting end 8 and each sorting section and sorting section 10, 11, 12, proceed to the left in FIG. 3 and reach the end of the second trough 4. It is guided to the starting end of the first trough 3 as shown by the arrow under the guide action of the section 39. Further, the valley portion 9 is slightly inclined toward the outside as shown in FIG.

In the single-row sorting section 10, as shown in FIG. 6, the transfer path 40 has a width substantially equal to the width of the component 1, and is inclined downward toward the side wall 4a. Therefore, although the parts 1 are transferred in one row in a biased manner toward the side wall 4a, even if the parts 1 are not transferred in multiple rows from the starting end 8 to the single-row sorting section 10, the parts in the inner row (on the side of the trough 9) 1 all fall into valley 9.

The front/back discriminating feeding unit 11 according to the present invention regulates the height of the block 44 for forming the transfer path 44b and the upper wall member 140 above the transfer path 44b, as shown in FIGS. 3 and 7A. and a mounting block 42 for fixing the upper wall member 140 to the spacer 41.
As shown in FIG. 3, the upper wall member 140 has a triangular plate shape in plan view, and the edge 140a is inclined toward the valley 9 with respect to the transport direction of the component 1. Further, along the transfer path 44b, grooves 41a and 44a having a width and depth sufficient to receive the protrusions of the electrodes 1a, 1b, 1c and 1d of the component 1, ie, the transistors, are formed in the spacer 41 block 44, as shown in FIG. 7A. As shown in FIG. 2, the distance from the transfer path 44b to the upper wall member 140 is configured to be slightly larger than the height of the body of the component 1. Further, the transfer path 44b is inclined outwardly and downwardly, and its width is smaller than the width of the body of the component 1.

As shown in FIGS. 8 and 9, the surface parts sorting section 12 consists of a transfer path forming block 46 and a sorting block 45 fixed to this block 46. This block 45 has a predetermined pitch B. Width D
A plurality of slits 45a are formed. Pitch B is the distance a between electrodes 1a, 1b, and 1c of component 1.
The width D is larger than the width b of the electrodes 1a, 1b, and 1c, but smaller than the width C of the electrode 1d.

A groove 46a is formed in the transfer path forming block 46 along the component transfer direction, and the width of the inner side wall portion 46b of this groove 46a is sufficiently small so that the groove 46a can accommodate the electrodes 1a, 1b, 1c, and 1d of the component 1. It has the width and depth to accommodate the protrusion, but the block 45
The width of the transfer path formed by the and side wall portions 46b is slightly smaller than half the width of the body of the component 1, as shown in FIG. The transfer path is inclined slightly downward along the outside, and the center of gravity g of the component 1 is slightly outside the outer edge of the side wall portion 46b, and around this edge there is a rotational force ( clockwise in Fig. 8), but electrode 1 of component 1
When the protruding portions a, 1b, 1c, and 1d come into contact with the bottom surface of the sorting block 45, the reaction movement thereof is restricted.

In the overflow eliminating section 13, the 10th
As shown in the figure, the transfer path 47 has a curved portion 47.
a and a straight path 47b, which are inclined downward toward the side wall portion. Straight path 47b is connected to transfer path 48 of supply trough 50. Note that a cover plate may be provided above the straight path 47b to eliminate possible overlap of parts.

The vibrating parts feeder equipped with the parts sorting device according to this embodiment is constructed as described above, and its operation will be explained below.

First, when this feeder is used, a large amount of parts 1 are put into the first trough 3 and the second trough 4. Next, when alternating current is applied to the coil of the electromagnet 19 of the vibration drive unit via a control means (not shown), the first trough 3, the second trough 4, and the supply track 50 vibrate as described above, and the inside of the first trough 3 The parts 1 rise to the right on the transfer surfaces 5, 6, the parts 1 on the lower transfer surface 6 are guided into the valley 9 of the second trough 4, and the parts 1 on the upper transfer surface 5 are guided to the side wall end. Under the guiding action of the slope 7a, part 1 moves to the second position.
It is guided to the starting end 8 of the trough 4. At this time, the parts 1 are guided with high density and move to the left in FIG.
The part 1 that is not guided to 0 falls into the valley 9.
In the single-row sorting section 10, the parts 1 are transferred through the transfer path 40.
Since the width of the part 1 is approximately equal to the width of the part 1, the parts move in a single file.

Front and back discrimination sorting unit 1 with the longitudinal direction facing the transport direction
Among the parts 1 that reached 1, the face-down part 1' is the 7th part.
As shown in Figure B, the protrusions 1a, 1b, 1c,
1d advances while abutting against the inclined edge 140a of the upper wall member 140, and falls from the transfer path 44b into the valley 9 below under the guiding action of the inclined edge 140a. In addition, as shown in FIG. 7A, the part 1 facing upward has protrusions 1a, 1b, 1c, or 1a in the groove 4.
1a and 44a, it passes under the upper wall member 140 as it is. Note that the parts 1 that have reached the front/back discriminating sorting unit 11 with the width direction facing the transfer direction also have a portion of the parts 1 at the edge 140a of the upper wall member 140 because their protrusions 1a, 1b, 1c, and 1d do not fit into the grooves. and falls into the trough 9.

The protrusions 1a, 1 of the parts 1 that have reached the sorting section 12 with the longitudinal direction facing the transfer direction and facing upward.
When the part 1' with b and 1c facing the sorting block 45 comes to the slit 45a of the block 45, the protrusions 1a, 1b and 1c are respectively aligned with the slit 45a.
It fits into the side wall portion 46b, rotates around the edge of the side wall portion 46b under the action of gravity, and falls into the valley portion 9. On the other hand, even when the part 1 with the protrusion 1d facing the sorting block 45 comes to the slit 45a, the protrusion 1d does not fit into the slit 45a and passes through the sorting section 12 as it is. That is, the side wall portion 4
The protrusion 1 receives rotational force around the edge of 6b.
d is brought into contact with the bottom surface of the block 45 and passes through the sorting section 12 without turning over. Note that the groove 44a in the front/back discrimination sorting section 11
and the groove 46a in the sorting part 12 are aligned, so that both the parts with the protrusion 1d facing the block 45 side and the parts with the protrusion 1d facing the opposite side, the protrusion 1d
a, 1b, 1c, or 1d is fitted into the groove 46a and smoothly introduced into the sorting section 12.

Part 1 that has reached the overflow state elimination section 13
When there is a mutual gap between the parts 1, the parts 1 proceed as they are along the curved portion 47a of the transport path 47, but when the parts 1 are transported at a higher density and come into contact with and press against each other, as shown in FIG. As shown in FIG. 3, some parts 1 fall into the valley 9 at this curved portion 47a, thereby reducing the transport density and canceling the overflow state. The parts 1 are transferred from the straight section 47b of the transfer path 47 to the transfer path 48 of the supply trough 50, and from this end, the parts 1 are supplied one by one to the next process in a desired posture. Part 1 that fell into valley 9
is again guided to the starting end of the first trough 3.

At the starting end of the first trough 3, the component 1 branches into an upper transfer surface 5 side and a lower transfer surface 6 side.
Above, the parts 1 are transferred in two or three rows, but in this transfer process and in the branching process at the starting end, agglomeration due to entanglement of a large number of parts 1 is alleviated, and the parts 1 are transferred from the upper transfer surface 5 to the second row. trough 4
Components 1 are efficiently supplied to the single-row sorting section 10 of. In other words, if the parts are lumped together, they will fall into the valley 9 as a group. Also, the lower transfer surface 6
By forming this, the amount of parts stored in the first trough 3 increases.

The embodiments of the present invention have been described above, but of course the present invention is not limited thereto, and various modifications can be made based on the technical idea of the present invention. For example, in the embodiment described above, the selection block 45
Since a large number of slits 45a are provided, the electrodes 1a of the component 1',
Even if 1b and 1c do not fit into each slit 45a, they fit into the next slit group 45a or the subsequent slit groups 45a. However, under ideal conditions, many parts are in troughs 3 and 4.
In the case of being introduced into a container and being transferred, it is only necessary to form three slits 45a.

Furthermore, in the above embodiment, a plurality of electrodes 1 are provided on one side.
A, 1b, 1c A mini power transistor 1 having one electrode 1d on the other side was explained as a component, but generally there are a plurality of protrusions below one side and one electrode below the other side. The present invention is also applicable to parts having individual protrusions.

Further, in the above embodiment, the slit 45a was formed in the sorting block 45, but an arcuate groove may be formed instead.

Further, in the above embodiments, a so-called linear parts feeder having a linear track has been described, but the present invention is also applicable to a parts feeder having a spiral track.

As described above, in the parts sorting device in the vibrating parts feeder of the present invention, in the parts sorting device in the vibrating parts feeder, the parts on the transfer path are moved by vibration. a first edge that is inclined downwardly on one side with respect to the transfer direction, has a groove formed on the one side along the transfer direction, and has an edge that is above the transfer path and slopes toward the other side with respect to the transfer direction; The first part provided with the exclusion member
A sorting section; provided on the downstream side of the first sorting section;
The transfer path is inclined downward to the one side with respect to the component transfer direction, and a second removal member having a plurality of notches each having a predetermined width at a predetermined interval above the transfer path is provided. A component having a plurality of first protrusions having a width smaller than the width of the notch below one side, and a second protrusion having a width larger than the width of the notch below the other side. If the parts are facing down, they are guided to the other side by being transferred while the protruding part of the part is brought into contact with the edge of the first removal member in the first sorting section. The parts facing upward are forced to pass under the first projecting removal member by fitting the projecting part into the groove, and in the second transporting part, Among the parts facing upwards, the parts that have been transferred with the one side facing the one side of the transfer path are reversed by gravity at the edge of the transfer path, so that each of the plurality of first protrusions is When aligned with the notch, the part passes through this and is removed to the lower side of the other side of the transfer path, and is transferred with the one side of the part facing upwards toward the other side of the transfer path. Even when the second protruding part aligns the notch, the parts that have come in do not pass through the notch, but instead pass through the transfer path directly below the second removal member, so that parts can be efficiently and reliably transported in the desired posture.

[Brief explanation of drawings]

Fig. 1 is a plan view of a part applied to an embodiment of the present invention, Fig. 2 is a rear view of the same part, and Fig. 3 is a diagram of a linear parts feeder equipped with a parts sorting device according to an embodiment of the present invention. 4 is a side view, FIG. 5 is a cross-sectional view in the line direction of FIG. 3, and FIG.
Figure 7A is an enlarged cross-sectional view along the line A--A in Figure 3, shown together with parts, and Figure 7B is the same as Figure 7A for explaining the operation of this embodiment. Enlarged sectional view, No. 8
The figure is an enlarged cross-sectional view in the - line direction of FIG. 3, shown together with parts, and FIGS. 9 and 10 are enlarged perspective views of a part of FIG. 3, shown together with parts. In the figure, 1... components (transistor),
1a, 1b, 1c, 1d...Electrode, 4...Second trough, 11...Part front and back discrimination sorting unit, 12...Front part sorting unit, 44...Transfer path forming block, 4
1a, 44a...Groove, 44b...Transfer path, 41...
...Spacer, 46... Transfer path forming block, 4
6a...Groove, 46b...Side wall portion, 45...Selecting block, 45a...Slit, 140...Top wall member, 140a...Edge.

Claims (1)

[Claims] 1. In a parts sorting device for a vibrating parts feeder, in which parts on a transfer path are transferred by vibration, the transfer path is inclined downwardly to one side with respect to the transfer direction of parts, and the transfer path is inclined downwardly to one side with respect to the transfer direction of the parts. a first displacing member having a groove formed along the transfer path and having an edge sloped toward the other side with respect to the transfer direction above the transfer path;
provided on the downstream side of the sorting section, the transfer path being inclined downward to the one side with respect to the component transfer direction;
a second removal member having a plurality of notches with a predetermined width at predetermined intervals above the transfer path; If the part has a plurality of first protrusions and one second protrusion with a width larger than the width of the notch below the other side and is facing down, the first removal member By transferring the part while bringing the protruding part into contact with the edge of the part, the part is guided to the other side and removed from the transfer path to the lower part of the other side. By fitting the protrusion into the groove, the first removal member is passed under, and the one side of the face-facing parts is directed toward the one side of the transfer path in the second transport section. When each of the plurality of first protrusions is aligned with the notch due to the reversing action of gravity at the edge of the transfer path, the transferred component passes through this and is transferred to the other part of the transfer path. Even if the second protrusion is aligned with the cutout, the part that is removed laterally and transferred with the one side of the face facing part facing the other side of the transfer path is A parts sorting device for a vibrating parts feeder, characterized in that the parts are passed through the transfer path directly under the second removal member without passing through this.