JP2000109208A - Manufacture of bowl for vibrating part feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts used for a bowl and man-hours so as to greatly lower production costs for the bowl by integrally casting at least a spiral track and an attachment mounting part in formation. SOLUTION: In a bowl 1, an attachment mounting part 3 is integrally cost of aluminum in a cup-shaped principal part 2. A spiral track 5 inside the principal part 2 is extended spirally from the outer edge part of a bottom part 4 on a low truncated cone to the upper side, and to the end part of the track 5, the attachment mounting part 3 is connected with a step 9 between the attachment mounting part 3 and a flat plate part 8. In addition, a circular arc-shaped outside wall part is formed vertically in the outer edge part of the flat plate part 8, while a semicircular groove (g) is formed in the connection part with the flat plate part 8, and in the middle part of a circumference wall part 6c, an attachment mounting base 7 is formed integrally. A balance weight for the purpose of mass balance is formed by casting, while the bowl circumference wall part 6a is thickened and formed integrally. In installation of the track molding member to the bowl, no separate mounting member is required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for manufacturing a bowl of a vibrating parts feeder.

[0002]

2. Description of the Related Art FIG. 10 is a partially cutaway side view of a component discharging device 1 ', and FIG. 11 is a plan view thereof. Referring to FIG. 10, a component discharging device 1 'is manufactured based on a torsional vibration parts feeder, and accommodates a component C, discharges the component 21 in a proper orientation, and a drive for applying torsional vibration to the bowl 21'. And a part 11 '. In the drive unit 11 ', the inclined plate spring 1 in which movable blocks 12' fixed integrally with the bottom plate of the bowl 21 'are arranged at equal angular intervals.
A movable core 12'c, which is connected to a lower fixed block 14 'by a 3', and an electromagnet 16 'on which a coil 15' is wound is provided on the lower surface of the movable block 12 ', on the fixed block 14'. They are fixed facing each other with a slight gap. The drive unit 11 ′ surrounds the soundproof cover 1.
7 'and covered with the base 1 via the vibration isolating rubber 18'.
It is installed on 9 '.

[0003] Referring to FIG. 11, a bowl 21 'has a bottom surface 22' in which a large number of components C are accommodated in a reclined position (in FIG. 11, the components are scattered for simplicity). From the starting point 24's around the bowl)
A track 24 'which rises in a clockwise spiral along the peripheral wall 23' of 1 'is provided, and serves as a transfer path for the component C. The track 24 'is inclined slightly downward from the center of the bowl 21' toward the radial outside, and the part C is transferred along the peripheral wall 23 'by the inclination and the centrifugal force component of the torsional vibration force received.

[0004] The truck 24 'is moved from the top lap to the bowl 2
It is guided to an external portion 31 'provided on the outer peripheral side of 1', and is connected to the upper track 34 '. The upper track 34 ′ is also inclined downward toward the outside of the diameter of the bowl 21 ′, and the component C is transferred along the peripheral wall 33 ′ on the upper track 34 ′.
In the straightening / sorting section 35 'in which 1' is widened, the part C
Upper track 34 ′ having a narrow width so that
A lower track 44 ′ having a U-shaped cross section is provided at a position aligned with the component C at the downstream end of the lower track 4, as will be described later.
4 '. Then, from the downstream end of the upper track 34 'to the lower track 44', the orientation correcting mechanism 41 'and the orientation selecting mechanism 51' of the component C are provided.
Are provided. The component C that has passed through the direction selection mechanism 51 'is discharged from the discharge end 50'. Also, the part C for which the shift to the lower track 44 'is not normally performed is
It falls into the pocket 39 'provided in the straightening / sorting section 35', and is returned to the bowl 21 ', though not shown. A balance weight 29 'is provided at a position on the outer peripheral portion of the bowl 21' facing the straightening / sorting portion 35 '.
Is attached.

However, in the bowl 21 'of the above-mentioned conventional vibration part feeder, a band-shaped track 24' is fixed to the inner peripheral wall of the main body formed into a substantially cylindrical shape by, for example, welding. An external portion 31 'as an attachment is attached to the discharge end. On this downstream side, the component C is provided with a direction correcting mechanism 41 'and a direction selecting mechanism 51'. These components are also attached to the bowl 21 'as attachments. And returns into the bowl 21 through an opening (not shown).

[0006] As described above, the bowl 21 'is manufactured by machining or welding an iron material, and an attachment 31' separately machined thereto is mounted via a mounting member (a member 37 'or a member not shown). ing.
Therefore, the conventional bowl processing requires a large number of steps, and the processing cost is high.

FIG. 12 shows another conventional vibrating parts feeder, in which a bowl 62 is fixed above an elliptical vibration driving section 63. The fixed frame 64 is supported on the floor by the vibration isolating rubber 73, but has a cross-shaped lower frame 65.
Similarly, a leaf spring 68 for horizontal vibration, which is vertically disposed between the tip 65a of the cross-shaped upper movable frame 67 and the tip 65a of each arm, is fixed. Further, both ends of a horizontally disposed leaf spring 66 for vertical vibration are fixed to the middle portions of the lower movable frame 65,
The intermediate portion is fixed to the fixed frame 64 side. The fixed frame 64 is provided with a pair of electromagnets 69 for horizontal vibration in the radial direction, and the movable core 70 is fixed to the bowl 62 with a gap therebetween.
An electromagnet 71 for vertical vibration is provided at the center of the fixed frame 64, and a movable core 72 is fixed to the bowl 62 with a gap therebetween. This is a known structure, however, when an alternating current is applied to the coils of the pair of horizontal excitation electromagnets 69 and 69, and an alternating current is applied to the coil of the vertical excitation electromagnet 71 with a phase difference from the alternating current. The bowl 62 performs an elliptical vibration.

Next, the details of the bowl 62 will be described with reference to FIG. 13, a spiral track 75 is formed inside the bowl 62 by winding it in a counterclockwise direction. As shown in FIGS. 14 and 15, this is formed by a transfer surface 75a inclined downward in a radially outward direction and a side wall portion 75b substantially perpendicular to the transfer surface 75a. A flow rate adjusting portion 76 (adjustable by taking in and out of the plate 75a 'as shown in FIG. 14) is provided, and the flow rate is adjusted here, and the nail N is moved to the first position as described later. It is suspended obliquely by the suspension unit 77 and transported by elliptical vibration. Further, a straight hanging portion 78 as a second hanging portion for hanging and transferring the nail N in a straight state is connected to the downstream side. As shown in FIG. 14, the flow rate adjusting portion 76 is provided on the side wall portion 7 of the bowl.
The mounting member 177 is fixed to the outer peripheral surface of the base 5b.
The transfer path forming plate 78 is slidably contacted with the mounting screw 79.
It is fixed by. By loosening the mounting screw 79 fitted in the long hole 78a of the plate 78, the inside of the bowl 62 can be adjusted to move inward and outward in the meantime, and the width adjusts the flow rate of the nail N to the downstream side. I do.

The bowl 62 having the above structure is also used in FIGS.
As shown in the above, cut and wind a plate made of iron,
As shown in FIG. 13, a first suspension 77 and a second suspension 78 are attached to the bowl 62 through an attachment member a.
It is fixed to. Parts that are not suspended properly fall into the pocket P and return to the inside of the bowl 62.

[0010] As described above, in the first and second conventional vibrating parts feeders, the bowls are all manufactured by machining or welding, and various attachments to be mounted on the bowls are also provided via separate mounting members. Attached to the bowl.

[0011]

In the above-mentioned conventional example, the processing of the bowl and the processing of the attachment mounting portion are mechanical processing and welding processing, and assembly of these requires a large processing cost. An object of the present invention is to provide a method of manufacturing a bowl of a low-cost vibrating parts feeder.

[0012]

The above object is achieved by a method of manufacturing a bowl for a vibrating parts feeder, wherein at least a spiral track and an attachment mounting portion are integrally formed by casting.

[0013]

1 to 4 show an entire bowl manufactured by the method of the present invention. According to this embodiment, a wooden mold having a shape as shown in FIGS. 1 to 4 is shown. Is formed, thereby forming a sand mold and manufactured by aluminum casting. That is, in FIG. 1, the bowl is indicated by 1 as a whole, and an attachment mounting portion 3 is integrally molded with a bowl-shaped main portion 2. A spiral track 5 is formed in the main body 2 and has a low frustoconical bottom 4 as shown in FIG.
The attachment attachment portion 3 is connected to this end portion in a spiral shape upward, and is connected to the flat plate portion 8 with a step 9. Further, an arc-shaped outer wall portion 10 is formed vertically at an outer edge portion of the flat plate portion 8, and an arc-shaped groove g having a substantially semicircular cross section is formed at a connecting portion (corner portion) between the outer wall portion 10 and the flat plate portion 8. I have. As shown in FIG. 2, the main portion or the peripheral wall portion 6 of the main body 2 is about 270
A peripheral wall portion 6 extending over a range of degrees, but being a part of a side wall portion radially opposed to the attachment mounting portion 3.
“a” is about twice as thick as the other peripheral wall portions 6b and 6c. Further, an attachment mount 7 is integrally formed at an intermediate portion of the peripheral wall portion 6c. The bowl body 2 as described above is cast of aluminum, and an attachment described later is attached to the attachment mounting portion 3 and the attachment mounting base 7.

A through hole 11 as a bolt insertion hole is machined in the bottom 4 of the bowl body 2. As shown in FIG. 3, in order to machine the above-described through hole 11 in the bottom wall portion 4, the boss portion 2b is cast and formed as a reinforcing portion to enhance the mechanical strength. As shown in FIG. 4, a cylindrical reinforcing mounting portion 2a is further formed concentrically outwardly, during which a rib 13 is also formed integrally in the radial direction during casting. The ribs 12 are also integrally formed radially.

As described above, the track member 22 having a semicircular and arcuate transfer surface is attached to the flat plate portion 8 of the attachment attachment portion 3 on the attachment attachment portion 3 of the bowl body 2 formed by casting. As shown in FIG. 7, two circular recesses 8a are machined in the flat plate portion 8 (FIG. 6).
). At this time, surface grinding is performed from inside the diameter of the flat plate portion 8 toward the outer wall portion 25 so that the track member 22 is accurately positioned. In this processing, the arc-shaped groove g facilitates surface grinding to form a smooth surface. The disk-shaped mounting member 2 is accommodated within this range.
3 is fixed to the bottom surface of the track forming member 22 by welding. A screw hole is formed at the center thereof, and a bolt insertion hole 8b is formed in the flat plate portion 8 corresponding to the screw hole. The bolt 24 is screwed into the screw hole of the mounting member 23 through the insertion hole 8b. Thereby, the track forming member 22 is fixed to the flat plate portion 8.

As shown in FIG. 6, the track forming member 22 passes through the entire area of the attachment mounting portion 3, and further protrudes and extends about 1/4 circle. A known overflow detection device 30 is provided on the way, and a light emitting element 30a and a light receiving element 30b are attached to a U-shaped member. An arc-shaped holding plate 2 is provided so as to cover the upper part of the 1/4 circle portion.
6 is attached to the track forming member 22 via thumb screws 31, 32 via attachment members 33, 34. A mounting plate 50 on which a track-forming member 22 extending outward by about 1/4 circle is mounted on a flat mounting base 7 formed by casting.
Is fixed with the screw 4 so that the entire attachment is firmly fixed to the bowl body 2. Further, as clearly shown in FIGS.
An arc-shaped component flow guide member 60 is attached to the flat plate portion 8 by an attachment member 61 adjacent to the discharge end of the above-mentioned and the upstream end of the track forming member 22. The notch 22a is formed so that the overlapped or multi-row components m can be easily dropped from the track forming member 22.

The bowl 1 manufactured according to the embodiment of the present invention is also attached to the torsional vibration drive unit 50 in the same manner as in the prior art, and as shown in FIG. 5, an electromagnet in which an electromagnetic coil 51 is wound around a base block 53. 52 is attached, which faces a movable core 58 fixed to the bottom surface of the movable frame 54 with a gap. Movable frame 54
The base block 53 is connected to the base block 53 by inclined leaf springs 59 arranged at equal angular intervals. The whole is anti-vibration rubber 57
Is supported on the substrate. The bolt 21 is inserted into the through hole 11 formed at the center of the bottom of the bowl 1 and screwed into the screw hole of the movable frame 54 to tighten the bowl 1.
Is fixed to the drive unit 50.

The vibrating parts feeder according to the embodiment of the present invention is configured as described above, and the following operation will be described.

When an alternating current is applied to the electromagnetic coil 51, a magnetic alternating force is generated between the electromagnetic coil 51 and the movable core 58, whereby the bowl 1 performs torsional vibration. According to the present embodiment, the part m to be conveyed has a cylindrical shape, is put in a large amount at the bottom of the bowl 1 and rises the truck 5. After falling onto the member 22, the semi-circular transfer surface is transferred counterclockwise in the figure by torsional vibration.

Since the arc-shaped member 60 is adjacent to the inner edge of the flat plate portion 8 as shown in FIG. 6, the components dropped in a multi-row or overlapping manner are the components m and The component m being conveyed through the track forming member 22 is transferred on the flat plate portion 8 under the torsional vibration along the surface of the member 60 without impairing the posture of the component m or hindering the conveyance. Returned to the department. That is, according to the present embodiment, the flat plate portion 8 functions as a conventional pocket.

Further, according to the present embodiment, the portion 6a radially opposed to the attachment 3 on the peripheral wall of the bowl 2 is made thick, so that the mass distribution around the center of the bowl 1 is reduced. The torsional vibration of the bowl 1 is uniform over the entire circumference.

Although the embodiment of the present invention is configured as described above, the number of processing steps for the bowl and the attachment mounting portion, which conventionally required a large number of processing steps, is greatly reduced. Further, according to the present embodiment, the balance weight for mass balance is integrally formed by casting to make the bowl peripheral wall portion 6a thicker. Further, the track forming member 22 is attached to the bowl by another attaching member. Since the mounting portion 3 already formed integrally by casting can be slightly mounted and firmly mounted as it is unnecessary, the number of conventional processing steps can be greatly reduced as a whole, and the manufacturing cost can be greatly reduced. Further, once the mold of the bowl 1 is made, a bowl having exactly the same shape as the mold can be mass-produced at low cost.

Although the embodiment of the present invention has been described above, the present invention is, of course, not limited to this, and various modifications can be made based on the technical idea of the present invention.

For example, in the above-described embodiment, the attachment mounting portion has a flat plate shape.
It may be formed as a recess having the same shape as a conventional pocket. Further, according to the present embodiment, the track forming member 22 is also used to transport the columnar part m. Since this is an attachment, it is manufactured as before, but its attachment to the bowl is easier than before.

In the above embodiment, the semicircular groove g is formed in the outer peripheral edge of the flat plate portion 8 in order to accurately attach the track forming member 22 to the attachment attaching portion. Is also good. The bowl 1 may be appropriately machined to perform various alignment operations.

[0026]

As described above, according to the method of manufacturing the bowl of the vibrating parts feeder of the present invention, the number of parts used for the bowl of the vibrating parts feeder is reduced, and the number of processing steps is reduced, thereby greatly increasing the manufacturing cost of the bowl. Can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire bowl according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a sectional view taken along the line [3]-[3] in FIG.

FIG. 4 is a perspective view of the same seen from the bottom.

FIG. 5 is a partially broken side view showing a state in which a bowl manufactured according to the embodiment of the present invention is attached to a conventionally known torsional vibration drive unit.

FIG. 6 is a plan view of the same.

FIG. 7 is a sectional view taken along the line [7]-[7] in FIG.

8 is a sectional view taken along the line [8]-[8] in FIG.

9 is a sectional view taken along the line [9]-[9] in FIG.

FIG. 10 is a partially broken front view of a conventional vibration parts feeder.

FIG. 11 is a plan view of the same.

FIG. 12 is a front view of another conventional vibration parts feeder.

FIG. 13 is a bottom view of the same.

14 is a sectional view taken along the line [14]-[14] in FIG.

15 is a sectional view taken along the line [15]-[15] in FIG.

[Explanation of symbols]

 1 Bowl 2 Body 3 Attachment mounting part 4 Bottom 5 Truck

Claims (9)

[Claims] 1. A method of manufacturing a bowl for a vibrating parts feeder, wherein at least a spiral track and an attachment mounting portion are integrally formed by casting. 2. The method according to claim 1, wherein the attachment mounting portion is a flat plate formed with a step at an end of the spiral track. 3. A side wall of the spiral track is vertical and an outer edge of the attachment mounting portion extends in an arc shape, and an outer wall is connected to the side wall of the spiral track perpendicular to the outer edge. The method for manufacturing a bowl for a vibrating parts feeder according to claim 2, wherein the bowl is provided. 4. The method according to claim 3, wherein a groove having a substantially semicircular cross section is formed along the outer edge. 5. A concave portion is formed in the attachment mounting portion in communication with the groove, and an arc-shaped component transfer track extending along the outer wall portion is mounted as an attachment, and the mounting is performed in the concave portion. It is performed by fixing a plate material to be fitted to the bottom surface and forming a screw hole in the plate material, inserting a bolt into a bolt insertion hole formed in the flat attachment attachment portion, and screwing it into the screw hole. The method for manufacturing a bowl of a vibrating parts feeder according to claim 4, wherein: 6. The method for manufacturing a vibrating parts feeder bowl according to claim 1, wherein a portion of the side wall portion substantially facing the attachment mounting portion is made thicker than the other portion. 7. The method of manufacturing a bowl for a vibrating parts feeder according to claim 1, wherein a rib is formed integrally with the bottom wall portion. 8. The device according to claim 5, wherein the flat plate-like attachment attachment portion is used as a pocket for receiving a component removed from the component transfer truck and guiding it to a part of the spiral track. A method of manufacturing the bowl of the vibrating parts feeder described in the above. 9. The method for manufacturing a bowl of a vibrating parts feeder according to claim 1, wherein the method is casting of aluminum.