JPH08231022A - Vibration parts feeder - Google Patents

Abstract

PURPOSE: To provide a vibration parts feeder capable of obtaining a larger amplitude with reduced currents by making uniform a gap between an electromagnet an a movable core. CONSTITUTION: Beltlike projecting sections 50aa and 50ab are formed in the diameter outer side of the bottom wall side 50a of an E type electromagnet 50, these are brought into contact with the upper step portions of beltlike patches 52a and 52b having step shape sectional surfaces, inserted through the bolt inserting holes of the lower step portions and by engaging the fastening these in screw holes formed in a base block 40, the E type electromagnet 50 is fixed to the base block 40. Specified size of a gap gauge is inserted in a gap (g) between a movable core 39 and the electromagnet 50 during assembling, fixing to the plate spring attaching block 38 in the upper end portion of a plate spring 43 is released and after the gap of a specified size is formed by vertically moving a ball 32, a bolt 44 is screwed and fastened and thereby a specified gap is obtained uniformly.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a vibratory parts feeder.

[0002]

2. Description of the Related Art FIGS. 8 to 11 show a vibrating parts feeder according to the conventional example, which is designated by 1 as a whole, and has a spiral shape on the inner peripheral wall portion of a substantially cylindrical bowl 2. Track 3 is fixed, and a discharge track 4 is integrally formed on the radially outer side, and in this conventional example, a pocket 5 is fixed. Although not shown, it has a part feeding means, and the central bottom wall portion 2 of this bowl 2 is provided.
The various parts put on the a are fed to the outside from the truck 4 by the feeding action of the component feeding means, but the components not in a predetermined posture fall into the pockets 5,
It is returned to the bottom wall portion 2a of the bowl 2 through an opening (not shown).

The bowl 2 is connected to the base block 7 by inclined leaf springs 8 arranged at equal angular intervals, and its lower end portion is formed on the base block 7 at 90 degree intervals, as shown in FIG. The lower end of the leaf spring 8 is brought into contact with the sloped surface 7a of the cutout portion, and the bolt 10 is fixed by screwing it into the screw hole formed in the sloped surface 7a. The bowl 2 is fixed by screwing the bolt 9 into the screw hole formed in the inclined surface 6a of the notch formed in the movable core mounting block 6 fixed to the bowl 2
And the base block 7 are connected.

In this conventional example, a circular recess 7b is formed in the base block 7, and this is shown in FIGS.
The E-shaped electromagnet 12 as shown in FIG. 2 is fixed to the bottom surface of the E-shaped electromagnet 12.
Is fixed by welding d (which represents a bead), and
Similarly, the outer edge of the bottom surface is also fixed by welding d. Further, the E-type electromagnet 12 is formed by stacking a number of thin silicon steel plates, as is known, and after this lamination processing, it is fixed to the mounting plate 14 by the welding d as described above. As shown in FIG. 10, the mounting plate 14 has screw holes 14a for bolts formed at four positions, and further has screw holes 7d formed on the bottom surface of the base block 7 in alignment therewith. The E-type electromagnet 12 is fixed to the base block 7 by screwing the gap adjusting bolt 15 into these screw holes. However, in the conventional example, the E-type electromagnet 12 is integrally formed in the central portion of the upper mounting block 6. The movable core 16 made of a magnetic material is opposed to the movable core 16 with a gap g therebetween. The size of the gap g adjusts the height of screwing of the bolts 15, so that the E-type electromagnet. 12
The height of is adjusted. That is, the gap g is adjusted.

The vibrating parts feeder 1 of the conventional example is constructed as described above, but the whole is supported on the floor by the vibration-proof rubber 11. As is known, the electromagnetic coil 13
An alternating magnetic attraction force is generated between the bowl 2 and the movable core 16 by connecting the AC power source to the bowl 2, which causes the bowl 2 to perform torsional vibration.

However, it is a matter of course that the bowl 2 must be assembled to the base block 7 as described above before such an operation is performed. At this time, the size of the gap g is set to a predetermined value. Must be adjusted to. Conventionally, the adjustment was performed as described above, but the mounting plate 14 is fixed to the E-type electromagnet 12 by welding d. At the time of welding, the E-type electromagnet 12 is exposed to a high temperature, and when returned to a normal temperature, it is distorted into a complicated shape from the alternate long and short dash line (representing the correct shape) in FIGS. 10 and 11. Therefore, with the bowl 2 not attached to the base block 7, the bolt 15 screwed next to the E-type electromagnet 12 disposed in the recess 7b is engaged with the box spanner from above and rotated. The height is adjusted by.
After that, the bowl 2 is attached to the base block 7 to form a predetermined gap g. Instead of this, a spanner is inserted in the spanner insertion opening formed on the side of the base block 7 even though not shown. Then, the gap gauge is inserted into the slit-shaped opening formed in the base block 7 at the level of the gap g, and the size of the gap is adjusted with the rotation adjustment of the spanner described above. can do.

In any case, as shown in FIGS. 10 and 11, the E-type electromagnet 12 is exposed to high temperature due to the action of welding and fixing it to the mounting plate 14, and when it returns to normal temperature, it is distorted from the alternate long and short dash line, For this reason, it is difficult to make the gap g exactly constant on all pole faces. Therefore, normally, the electromagnetic coil 13
The amplitude of the bowl 2 is adjusted by adjusting the magnitude of the voltage of the power source connected to the, for example, a regulator. However, depending on the magnitude of the distortion, a large current flows even at a constant voltage. , Electromagnetic coil 1 in some cases
3 may be damaged.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to make the pole surface of an electromagnet uniform and to make the gap between the pole surface of the electromagnet and the movable core facing it uniform and uniform. The purpose of the present invention is to provide a vibrating parts feeder.

[0009]

The above object is to connect a bowl having a spiral track formed inside and a base block by means of inclined leaf springs arranged at a plurality of equiangular intervals. By energizing the electromagnetic coil wound around the electromagnet fixed to the block, an alternating magnetic attraction force is generated between the electromagnetic coil and the movable core fixed to the bottom wall of the bowl, and the bowl is torsionally vibrated. In the vibrating parts feeder described above, the electromagnet has a protrusion extending outward on the bottom wall, and a metal is applied to the protrusion, and the gold is fixed to the base block with a bolt, The distance from the base block can be adjusted by releasing the fixation of the inclined leaf spring to the bowl or the base block, and by the adjustment, the movable core and the electromagnet are Vibratory parts feeder being characterized in that so as to adjust the air gap is accomplished by.

Further, for the above-mentioned purpose, a bowl having a spiral track formed therein and a base block are connected by a plurality of inclined leaf springs arranged at equal angular intervals and fixed to the base block. A vibrating parts feeder configured to energize an electromagnetic coil wound around an electromagnet to generate an alternating magnetic attraction force between the bowl and a movable core fixed to a bottom wall portion of the bowl to torsionally vibrate the bowl. The vibration is characterized in that the electromagnet has a protrusion extending outward on the bottom wall, and a metal is applied to the protrusion and the gold is fixed to the base block with a bolt. Achieved by the parts feeder.

[0011]

Since the electromagnet is not subjected to any welding process, if the thin silicon steel plates are accurately laminated, they can be arranged on the base block as they are and extend outward at the bottom wall. By applying a metal to the protrusion and fixing it to the base block with bolts, the relationship with the base block, that is, the relationship between this base block and the mounting position of the lower end of the leaf spring can be accurately obtained. By releasing the fixing of the bowl or base block of the inclined leaf spring, and fixing the inclined leaf spring to the bowl or base block again while inserting the gap gauge from the outside into the gap, for example, An air gap can be obtained between the movable core. Therefore, a constant amplitude can be obtained with a minimum current. Further, it is possible to avoid a partial collision between the movable core and the electromagnet during operation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vibrating parts feeder according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment, which is generally designated by 31, and has a bowl 32 having a shape similar to that of the conventional example, in which a spiral track 33 is formed, and A discharge track 34 is integrally formed on the outer peripheral side thereof, and a pocket 35 is attached to the outside thereof. Further, a plate spring mounting block 38 is fixed to the bottom wall portion of the bowl 32 of this embodiment via an annular member 47, and the cylindrical member 3 is fixed to the bottom wall surface of the bowl 32 by a bolt 36.
It is fixed by screwing through 7. The leaf spring mounting block 38 is connected to the lower base block 40 by leaf springs 43 arranged at equal angular intervals, which is 90 degrees of the base block 40, as clearly shown in FIG.
Slope portion 40 formed in notches 40a formed at regular intervals
The lower end of the leaf spring 43 is fixed by screwing and tightening the bolt 45 into the screw hole of b, and this upper end is also shown in FIG.
Notches 38 formed at 90 degree intervals as clearly shown in FIG.
a into the screw hole formed in the inclined surface portion 38b, the bolt 4
The upper end portion of the leaf spring 43 is fixed to the leaf spring 38 by screwing and tightening 4 through the spacer members S ₁ and S ₂ and the washer W (the same applies to the lower end portion).

According to the present invention, both end portions of the bottom wall portion 50a of the E-type electromagnet 50 are projected outward and are strip-shaped protruding portions 50aa.
And 50ab are formed. Therefore, the electromagnet 50 of the present embodiment is formed by laminating a large number of silicon steel plates having a sectional shape as shown in FIG. However, according to the present invention, the mounting plate is not welded to the bottom wall portion 50a, but is directly placed on the base block 40 as shown in FIG. As shown in FIG. 1, the protrusions 50aa and 50ab are made of a strip plate metal plate 5 having a stepped cross section so as to be stacked.
2a and 52b are arranged so that their upper step portions 52aa and 52ba overlap each other, and their lower step portions 52ab and 52b.
The bolt insertion holes 52ac and 52bc are formed in b, and the bolt 50 is inserted into the bolt insertion holes 52ac and 52bc.
By screwing and tightening in the screw hole 40c formed in
The upper block portions 52aa and 52ba are configured to be pressed into contact with and fixed to the base block 40. In addition, E
The mold electromagnet 50 can be moved left and right in FIG. 1 before being fixed as described above. Therefore, after being correctly positioned at the position facing the upper movable core 39, the die magnets 52a and 52b are used. Although it is fixed as described above, since it has a stepped shape, such movement adjustment is allowed. After the torsional vibration drive unit composed of the electromagnet 50, the movable core 39, the leaf spring 43, etc. is assembled, it is covered with a cylindrical cover 60. And the whole is supported on the floor by the vibration-proof rubber 42.

When alternating current is applied to the electromagnetic coil 51, as is well known, an alternating magnetic attraction force is generated between the movable core 39 and the electromagnet 50, which causes torsional vibration of the bowl 32. Then, the output of the inverter (not shown) is supplied to the electromagnetic coil 51, that is, the inverter is connected to the commercial power source. The frequency of the output can be changed by adjusting this volume, and the voltage can be changed by another volume. An AC output is supplied to the electromagnetic coil 51 with a desired value. Although it is possible to drive so as to automatically select the resonance point, according to the present embodiment, the frequency close to the resonance point is selected by the frequency adjustment as described above, and the desired amplitude is set in the bowl 32. Give track 33
In order to convey the parts not shown above in a predetermined posture, after passing through the parts feeding means, the parts not in the predetermined posture are in the pocket 3
5 and is returned to the bowl 34.

The above-described operation is similar to that of the conventional vibrating parts feeder, but before driving the vibrating parts feeder 31 of the present embodiment, the movable core 39 and the electromagnet 50 are driven like the conventional vibrating parts feeder. The gap g between and must be adjusted to a predetermined value. In this embodiment, as described above prior to this adjustment, after the E-type electromagnet 50 is moved and adjusted so that the left and right positions in FIG. 1 accurately face the movable core 39, the upper ends of the dowels 52a and 52b are adjusted. Part 52a
After the a and 53ba are brought into contact with each other, the bolt b is inserted through the insertion hole and screwed and tightened in the screw hole 40c of the base block 40. After that, the gap g is set to a predetermined value. To this end, before mounting the cover 60, a gap gauge adjusted to a predetermined size is inserted into the gap g, and the lower end of the leaf spring 43 has already been attached to the base block 4.
However, as shown in FIG. 3, the bolt 44 is formed on the slope 38b of the leaf spring mounting block 38 with the spacer members S ₁ and S ₂ and the washer W interposed therebetween. The leaf spring mounting block 38 can be moved up and down along the long hole 43a formed at the upper end of the leaf spring 43 prior to this fastening and fixing. it can. Therefore,
The size of the bowl 32 determined by the gap gauge
Can be bonded to the base block 40 at a predetermined distance.

In the present embodiment, the AC output of the inverter is further supplied to the electromagnetic coil 51. By this, after the predetermined gap is obtained, by adjusting the voltage or frequency applied to the electromagnetic coil 51, A predetermined swing can be applied to the bowl 32. Therefore, according to the present embodiment, after the value of the air gap g is first set to a predetermined value, it is not necessary to readjust it to obtain a predetermined amplitude, but it is not the output of the inverter but the conventional one. Similarly, when supplying the commercial frequency power as the power as it is,
Similarly to the conventional case, when the predetermined swing cannot be obtained, the leaf spring 43 is released from the fixing to the leaf spring mounting block 38, and the vertical movement of the bowl 32, that is, the leaf spring mounting block 38 is adjusted in the elongated hole 43a. Thus, the distance between the movable core 39 and the electromagnet 50, that is, the gap g may be readjusted.

According to this embodiment, since the mounting plate is not welded to the electromagnet 50, it is not exposed to a high temperature after laminating a large number of silicon steel plates, and the accurate shape is maintained. That is, the pole surface is flat and can be incorporated into the vibrating parts feeder, and therefore the movable core 3
The air gap g for 9 can be made uniform on all pole surfaces, and therefore, the current flowing through the electromagnetic coil 51 for a predetermined amplitude can be minimized.

A large current may flow in the electromagnetic coil 51 due to some abnormality, or an abnormality may occur in the mechanical system, causing a large swing to collide with a part of the gap g. Can be minimized.

FIG. 4 shows a vibrating parts feeder according to a second embodiment of the present invention. The parts corresponding to those in the above-mentioned embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

That is, in this embodiment, the base block 6
As shown in FIG. 5, a pair of strip-shaped projecting portions 60ca and 60cb are formed on the upper surface of No. 1, but the strip-shaped projecting portions 50aa and 50ab formed on the electromagnet 50 are strip-shaped. By forming a vacant space, strip-shaped metal members 62a and 62b are laid over the vacant space, the bolt 63 is inserted through the vacant space, and the screw holes 60d of the base block 61 are screwed and tightened. The E-type electromagnet 50 is fixed to the base block 61. Also in this embodiment, the E-shaped electromagnet 50 can be moved and adjusted to the left and right in FIG.

Also in this embodiment, the output of the inverter is supplied to the electromagnetic coil 51, and the same operation and effect as those of the first embodiment are obtained.

FIGS. 6 and 7 show a vibrating parts feeder according to a third embodiment of the present invention. In the drawings, parts corresponding to those of the above embodiment are designated by the same reference numerals, and detailed description thereof will be given. Is omitted.

That is, in this embodiment, a pair of inverted L-shaped electromagnets 71 and 72 are used instead of the E-shaped electromagnet.
7 is fixed to the base block 70 so as to face each other in the radial direction as shown in FIG. 7, and is formed by laminating a large number of silicon steel plates having a sectional shape as shown in FIG.
a and 72a, projecting portions 71c and 7 projecting outward in a belt shape.
1d and 72c, 72d are integrally formed and have the same cross-sectional shape as those of the first embodiment, but short strip-shaped metal members 76a, 76b, 77a, 77b have projecting portions 71c, 71d at their upper steps. , 72c, 72d are fixed to the base block 70 by pressing them.
The bolt 80 is inserted through this lower step, and the base block 7
It is fixed to the base block 70 by being screwed and tightened into the screw hole formed in 0. Electromagnetic coils 73 and 74 are wound around the horizontal arm portions 71b and 72b of the electromagnets 71 and 72, and the AC output of the inverter is supplied to the electromagnetic coils 73 and 74.

Further, movable cores 80a and 80b are suspended and fixed to the leaf spring mounting block 38 fixed to the bowl 32, and the horizontal arm portion 71 of the electromagnets 71 and 72.
According to the present embodiment, the gap g between b and 72b is adjusted by adjusting the left and right movements (to be exact, in the circumferential direction) before fixing the inverted L-shaped electromagnets 71 and 72 from the fittings 62a and 62b. As a result, a uniform void g can be obtained.
The distance between the pole faces in the vertical direction will be adjusted after the upper end or the lower end of the leaf spring is released from the leaf spring mounting block 38 or the base block 70.

Also in this embodiment, the inverted L-shaped electromagnet 7 is used.
Since the Nos. 1 and 72 do not perform any heat processing that is exposed to high temperature, the correctly laminated electromagnets can be incorporated into the vibrating parts feeder in the exact shape as they are, and therefore, as in the above embodiment. It is clear that it has a great effect.

Although the respective embodiments of the present invention have been described above, the present invention is not limited to these, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, the E-shaped electromagnet or the inverted L-shaped electromagnet is fixed to the upper surface of the base block 70, but like the conventional example, the base block 7 is fixed.
It is also possible to form a recess 7b in the central portion of and to fix the E-type electromagnet 50 or the inverted L-shaped electromagnets 71, 72 to the bottom of this recess.

In the above embodiment, the number of leaf springs connecting the bowl 32 and the base block 40 is one,
Although it is driven by the output of the inverter, of course, it may be driven at a commercial frequency as in the conventional case, and the number of leaf springs may be plural.

In the conventional example, the recess 7b is formed in the central portion of the base block 7 and the E-type electromagnet 12 is disposed in the recess 7b. This is one developed by the present applicant. In a conventional vibration part feeder before this, as in the above embodiment, an E-type electromagnet or an inverted L-shaped electromagnet is formed on the upper surface of the base block by the same method as described in the above-mentioned conventional example. The mounting plate was welded and fixed by, and the gap between the movable core and the movable core was adjusted by adjusting the rotation of the bolt screwed into the screw hole formed in the mounting plate. It goes without saying that it also has a great effect.

[0031]

As described above, according to the vibrating parts feeder of the present invention, it is possible to assemble the electromagnet while maintaining the shape of the electromagnet accurately, so that the size of the air gap can be made uniform and the maximum value can be obtained at the minimum current value. A swing can be obtained. Moreover, the risk of collision between the movable core and the electromagnet can be minimized.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a vibrating parts feeder according to a first embodiment of the present invention.

FIG. 2 is a plan view of the same vibration parts feeder with a bowl removed.

FIG. 3 is an exploded perspective view of the same vibration parts feeder with a bowl removed.

FIG. 4 is a partially cutaway side view of a vibrating parts feeder according to a second embodiment of the present invention.

FIG. 5 is a plan view of the same vibration parts feeder with a bowl removed.

FIG. 6 is a partially cutaway side view of a vibrating parts feeder according to a third embodiment of the present invention.

FIG. 7 is a plan view of the same vibration parts feeder with a bowl removed.

FIG. 8 is a partially cutaway side view of a conventional vibrating parts feeder.

9 is a plan view of the same vibration part feeder with the bowl removed, or a view taken along line [9]-[9] in FIG.

FIG. 10 is an enlarged cross-sectional view of an electromagnet of the conventional example and a portion related thereto.

FIG. 11 is an enlarged side sectional view of the same.

[Explanation of symbols]

 50 Electromagnet 50aa Projection 50ba Projection 52a Money 52b Money

Claims (4)

[Claims] 1. A bowl having a spiral track formed inside and a base block are coupled by a plurality of inclined leaf springs arranged at equal angular intervals, and wound around an electromagnet fixed to the base block. By energizing the electromagnetic coil, an alternating magnetic attraction force is generated between the electromagnet and a movable core fixed to the bottom wall of the bowl to torsionally vibrate the bowl. The bottom wall portion has a protrusion extending outward, and a metal is applied to the protrusion, the metal is fixed to the base block by a bolt, and the distance between the bowl and the base block is set to the inclined plate. It is possible to adjust by releasing the fixing of the spring to the bowl or the base block, and the gap between the movable core and the electromagnet is adjusted by the adjustment. Characteristic vibration parts feeder. 2. The electromagnet is an E-type electromagnet, and has the strip-shaped projecting portions projecting outward on both sides of the bottom wall portion, and the metal member is strip-shaped and has a stepped cross-section. 2. The vibrating parts feeder according to claim 1, wherein a part is applied to the projecting part and is screwed and fixed to the base block in which the bolt is inserted in a lower step part. 3. A bowl having a spiral track formed inside and a base block are coupled by a tilted leaf spring arranged at a plurality of equiangular intervals, and the bowl is wound around an electromagnet fixed to the base block. By energizing the electromagnetic coil, an alternating magnetic attraction force is generated between the electromagnet and a movable core fixed to the bottom wall of the bowl to torsionally vibrate the bowl. A vibrating parts feeder characterized in that a bottom wall portion has a protrusion extending outward, and a metal is applied to the protrusion and the gold is fixed to the base block by a bolt. 4. The vibrating parts feeder according to claim 1, wherein an output of an inverter is supplied to the electromagnetic coil.