JP5445916B2 - Vibrating parts feeder - Google Patents

Description

  The present invention relates to a vibration-type component supply apparatus that aligns components while conveying them linearly using vibrations from an excitation mechanism and supplies them to the next process.

  A vibration-type component supply device used for conveying and supplying components vibrates a component conveying member such as a trough using the vibration of an excitation mechanism, and aligns the component while conveying the component along a conveying path of the component conveying member. Is supplied to the next process. Such a component supply apparatus includes an alignment supply trough that aligns components while being conveyed linearly, an upper vibrating body to which the alignment supply trough is attached, and a lower portion that is connected to the upper vibration body by a first leaf spring. A vibrator, a vibration mechanism that vibrates both vibrators, and a return trough connected to the lower vibrator by a second leaf spring are used to return components that have been removed during the transportation of the alignment supply trough. There is a return type that is transported in the reverse direction by the trough and returned to the upstream side of the alignment supply trough (see Patent Document 1).

  Since the component supply apparatus described in Patent Document 1 vibrates two troughs with a common vibration mechanism, the structure is simpler and manufactured than when each trough is vibrated with a separate vibration mechanism. There is an advantage that the cost can be reduced. In addition, since the leaf springs are interposed between the troughs in two stages, there is little possibility that the parts conveyance in each trough becomes unstable due to the mutual vibration of the troughs.

  By the way, in such a return-type component supply device, generally, the return conveyance path of the return trough is formed with an upward slope, and the parts dropped from the middle of the conveyance path of the alignment supply trough smoothly move to the alignment supply trough. It is designed to be returned to the upstream side. On the other hand, since the return conveyance path has an upward slope, the return conveyance tends to become unstable when the size or weight of the parts changes. In such a case, in order to stabilize the return conveyance, it is effective to adjust the vibration angle of the return trough.

  However, the component supply device of Patent Document 1 has a drawback that it is difficult to adjust the vibration angle of the return trough. That is, in this component supply device, an inclined surface with a constant inclination angle is provided at the lower portion of the return trough, and a block-like connecting member having an inclined surface with the same inclination angle as that of the inclined surface is attached to the lower vibrating body. Since both ends of the second leaf spring are fixed to the inclined surfaces of the trough and the connecting member, if the inclination angle of the second leaf spring is changed in order to adjust the vibration angle, the entire return trough Alternatively, there is no method other than exchanging the leaf spring mounting portion and the connecting member with ones having different inclination angles of the inclined surfaces. However, the adjustment of the vibration angle by exchanging the parts takes much time for the replacement work and also requires the possession of a plurality of parts of the same type and different shapes, resulting in an increase in cost. As a result, there are many cases where the return conveyance is operated in an unstable state.

JP 2008-260590 A

  SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily adjust the vibration angle of a return trough in a vibration-type component supply device of a type in which an alignment supply trough and a return trough are vibrated by a common vibration mechanism.

  In order to solve the above-described problems, the present invention provides an alignment supply trough that conveys parts linearly, an upper vibration body to which the alignment supply trough is attached, and a pair of front and rear first leaf springs on the upper vibration body. A lower vibration body connected by a pair, a vibration mechanism that vibrates the two vibration bodies, a pair of front and rear second leaf springs connected to the lower vibration body, and a direction opposite to the alignment supply trough by a return conveyance path. In the vibration type component supply apparatus provided with a return trough for conveying components, means for adjusting the inclination angle of the second leaf spring in a vertical plane parallel to the component conveying direction is provided. . Thereby, the vibration angle of the return trough can be easily adjusted only by adjusting the inclination angle of the second leaf spring.

  Here, as means for enabling adjustment of the inclination angle of the second leaf spring, a connecting plate is slidably attached to the lower vibrating body in a vertical plane parallel to the component conveying direction. A lower connecting block fixed to the lower end of the second leaf spring is pivotally attached, and an upper connecting block fixed to the upper end of the second leaf spring is pivotally attached to the return trough. Things can be adopted.

  In the above configuration, a scale indicating the inclination angle of the second leaf spring is provided on the connecting plate mounting surface of the lower vibrating body, and an indicator for the scale is provided on the connecting plate, The connection is made in accordance with the inclination angle of the second leaf spring at a position where the inclination angle coincides with the scale value indicated by the indication portion of the connection plate, or at a position away from the rotation axis of the lower connection block. If a spacer for closing a gap generated between the plate and the plate is attached, the adjustment operation of the inclination angle of the second plate spring can be performed more easily.

  In addition, if the upper connection block and the lower connection block are each provided with an attachment surface having a shape capable of attaching the second leaf spring symmetrically with respect to the surface including the rotation shaft, each connection block is made into the second. The leaf springs can be shared with devices having different inclination directions.

  By providing means for adjusting the inclination angle of the return trough in a vertical plane parallel to the component conveying direction so that both the vibration angle and the inclination angle of the return trough can be adjusted, stable return conveyance can be achieved. The range that can be done can be expanded.

  As means for enabling adjustment of the inclination angle of the return trough, one end in the transport direction of the return trough is rotatably supported by a connecting portion with one second leaf spring, and the other end is A long hole extending in the rotation direction may be provided, and a bolt passing through the long hole may be fastened to a connecting portion with the other second leaf spring to fix the rotation position of the return trough.

  If the downstream portion of the return conveyance path of the return trough is an inclined surface that is inclined downward toward the upstream portion of the alignment supply trough, the parts can be easily transferred from the return trough to the alignment supply trough. It is possible to prevent stagnation of parts on the conveyance path.

  The second leaf spring is preferably formed by a single spring piece or a laminate of two spring pieces. If three or more spring pieces are laminated, the bending rate and vibration transmission performance of the leaf spring are lowered, the vibration waveform of the return trough is disturbed, and the return conveyance is likely to become unstable.

  Further, in the case where the alignment supply trough includes an alignment unit that aligns components and a feeding path unit that feeds the parts excluded from the alignment unit to the return trough, the conveying path of the feeding path unit By adopting an inclined surface that is inclined upward toward the downstream side, a drop in the conveying path is increased between the alignment portion of the alignment supply trough and the transmission portion, and the parts of the alignment portion and the transmission portion are Contact interference with parts can be prevented.

  As described above, the vibration type component supply device of the present invention is provided with means for adjusting the inclination angle of the second leaf spring that connects the return trough to the lower vibrating body. Even if the sheath weight changes, the return angle of the return trough can be adjusted at low cost by adjusting the inclination angle of the second leaf spring, and the return trough is stable. Sex can be secured.

Front view of the component supply apparatus of the embodiment Plan view of FIG. Left side view of FIG. Front sectional view of the alignment supply trough of FIG. Right side view of the return trough in FIG. Front view of the connecting plate of FIG. a to c are respectively a front view, a side view, and a front view of a mounting state of the lower connecting block of FIG. 1, and d is a sectional view taken along line DD of c. 1 is an enlarged front view of the upper connecting block mounting portion on the left side of FIG. The enlarged front view of the upper connection block attachment part on the right side of FIG. Front view of a modified example in which the parts return direction is reversed FIGS. 3A to 3C are front views illustrating a method of adjusting the inclination angle of the second leaf spring of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the vibration-type component supply device includes an alignment supply trough 1 that aligns components while conveying them linearly, and a return component that conveys components in the opposite direction to the alignment supply trough 1. The return type trough 2 is provided with a trough 2, and the parts removed during the transportation of the alignment supply trough 1 are returned to the upstream side of the alignment supply trough 1 by the return trough 2.

  The upper vibrating body 3 to which the alignment supply trough 1 is attached and the lower vibrating body 6 supported by the base 4 fixed to the floor F via the vibration isolating rubber 5 are a pair of front and rear first leaf springs. 7 (the leaf springs on the rear side are not shown). An excitation mechanism (not shown) that vibrates both vibration bodies 3, 6 is provided between both vibration bodies 3, 6, and covers 8, 9 that cover the vibration mechanisms are disposed on the front surface of the lower vibration body 6 and It is fixed on the back. The return trough 2 is connected to the connecting plate 10 attached to the outer surface of the front cover 8 by a pair of front and rear second plate springs 11. Here, in the second leaf spring 11, the number of laminated spring pieces is two so that a desired bending rate and vibration transmission performance can be ensured. Of course, the second leaf spring is made of only one spring piece. It can also be formed. The vibration mechanism (not shown) is composed of an AC electromagnet fixed to the lower vibrating body 6 and a movable iron core fixed to the upper vibrating body 3.

  The alignment supply trough 1 has an alignment portion 12a for aligning components on the upstream side, and receives a chute 12 for conveying the aligned components to the discharge end of the apparatus and components removed from the alignment portion 12a of the chute 12. And a transmission path block (transmission path section) 13 for feeding into the return trough 2. As shown in FIG. 2, the conveying path 14 is widened at an angle of about 1 ° toward the downstream side, so that the parts are not easily stuck to the wall surface. Further, as shown in FIG. 4, the conveyance path 14 is an inclined surface having an upward slope of about 1 ° toward the downstream side. As a result, a drop in the conveying path between the alignment portion 12a of the chute 12 and the transmission block 13 increases, and even if the components on the transmission block 13 are piled up, the components on the alignment portion 12a Less likely to cause contact interference.

  As shown in FIGS. 2 and 5, the return trough 2 is continuous with the inclined surface 15 a formed ascending from the side of the discharge end of the transmission block 13 toward the downstream side, and the inclined surface 15 a. A return conveyance path 15 comprising a substantially horizontal intermediate surface 15b and an inclined surface 15c formed with a downward gradient of about 3 ° from the downstream end of the intermediate surface 15b toward the upstream portion of the alignment supply trough 1; ing. As described above, the most downstream portion of the return conveyance path 15 is the inclined surface 15c having a downward slope, so that the parts are easily transferred from the return trough 2 to the alignment supply trough 1, and the stagnation of the parts in the return conveyance path 15 is prevented. It is hard to occur. The upstream inclined surface 15a is formed in two rows, and each row has a rake angle of about 8 °.

  As shown in FIG. 1, the return trough 2 and the connecting plate 10 are connected by connecting the upper and lower second leaf springs 11 with upper connecting blocks 16 a and 16 b at the upper end and lower connecting block 17 at the lower end. The upper connection blocks 16a and 16b are rotated on the lower surface side of the return trough 2, and the lower connection blocks 17 are rotated on both ends in the longitudinal direction of the connection plate 10 in a vertical plane parallel to the component conveying direction. It is mounted so that it can move.

  Here, as shown in FIGS. 1 and 6, the connecting plate 10 has two bolt holes 18 at both ends in the longitudinal direction, and two substantially rectangular windows 19 and three long holes 20 at the center. Has been opened. The lower connecting block 17 is attached to the cover 8 by bolts 21 passed through the long holes 20 and bolts 22 screwed into the bolt holes 18. Therefore, by changing the position of the bolt 21 passing through each long hole 20, the connecting plate 10 can be slid in a vertical plane parallel to the component conveying direction, and the upper connecting blocks 16a and 16b and the lower connecting block are combined with this. By rotating the block 17, it is possible to adjust the inclination angle of the second leaf spring 11 in a vertical plane parallel to the component conveying direction.

  The window 19 on the left side of the connecting plate 10 is opened through the window 19 at a position where the scale 23 provided on the outer surface (the connecting plate 10 mounting surface) of the front cover 8 of the lower vibrating body 6 can be seen. A projection 24 serving as an indicator for the scale 23 of the cover 8 is provided on the lower edge of the left window 19, and the inclination angle of the second leaf spring 11 is set to the value of the scale 23 indicated by the projection 24. It is supposed to match.

  Further, the peripheral edges of both end portions of the connecting plate 10 have a convex arcuate contour centered on the axis of each bolt hole 18 and guide surfaces 25 for guiding the rotation of the lower connecting block 17 as will be described later. Is formed.

  On the other hand, as shown in FIGS. 7A and 7B, the lower connecting block 17 has a concave arc surface 26 guided to the guide surface 25 of the connecting plate 10 at the time of rotation on one end side in the longitudinal direction. Is formed. Further, on both side surfaces, mounting surfaces 27 to which the lower end portions of the second leaf springs 11 can be attached are symmetrical with respect to a virtual surface A including the rotation axis (the axis of the bolt through hole) of the connection block 17. Is formed. Then, as shown in FIGS. 7C and 7D, when the connection block 17 is bolted to the connection plate 10, the second plate spring 11 is not attached to the attachment surface 27 on the side where the second plate spring 11 is not attached. By attaching a spacer 28 that closes a gap generated between the second leaf spring 11 and the connecting plate 10 according to the inclination angle of the second leaf spring 11, the adjustment operation of the inclination angle of the second leaf spring 11 can be easily performed. .

  As shown in FIGS. 8 and 9, the upper connection blocks 16 a and 16 b also have attachment surfaces 29 to which the upper ends of the second leaf springs 11 can be attached on both side surfaces, similarly to the lower connection block 17. The blocks 16a and 16b are formed symmetrically with respect to the virtual planes B and C including the rotation axes. Thereby, each connection block 16a, 16b, 17 can be shared with the apparatus from which the inclination direction of a 2nd leaf | plate spring differs. For example, in this embodiment, the reflux of the parts removed from the alignment supply trough 1 is counterclockwise as viewed from above the apparatus, but as shown in FIG. However, each connecting block 16a, 16b, 17 can be used. In addition, about each member of the apparatus of FIG. 10, the same code | symbol is attached | subjected to the thing of the same function as FIG. 1, and description is abbreviate | omitted.

  In addition, as shown in FIGS. 1, 8, and 9, the return trough 2 has an attachment portion 30 provided on the lower surface side of the upstream end portion fixed to the upper end portion of the second leaf spring 11 in front. The upper connection block 16a is attached with a bolt 31 and is rotatably supported. The mounting plate 32 provided on the lower surface side of the downstream end portion has a long hole 33 extending in the rotational direction of the trough 2, and a bolt 34 passed through the long hole 33 is connected to the second rear side. The rotational position of the trough 2 is fixed by tightening the upper connection block 16b fixed to the upper end of the leaf spring 11. Therefore, by changing the position of the mounting plate 32 with respect to the rear upper connecting block 16b, the inclination angle of the trough 2 in the vertical plane parallel to the component conveying direction can be adjusted. The rear upper connecting block 16b has a shape that does not interfere even if the mounting plate 32 is fixed on the lowermost side.

  This component supply apparatus has the above-described configuration, and the electromagnet of the vibration mechanism has a frequency close to the natural frequency of the vibration system including the alignment supply trough 1, the two vibrating bodies 3 and 6, and the first leaf spring 7. By applying the alternating current, the alignment supply trough 1 and the upper vibrator 3 vibrate efficiently. The vibration angle is substantially in the plate thickness direction of the first leaf spring 7, whereby the components on the alignment supply trough 1 are conveyed from right to left in FIGS. 1 and 2. Then, the parts arranged in the predetermined posture by the alignment supply trough 1 are supplied to the next process, and the parts which are excluded without being in the predetermined posture are sent to the return trough 2. In the return trough 2, the parts sent from the alignment supply trough 1 are conveyed back from the left to the right in FIGS. 1 and 2 by the vibration in the plate thickness direction of the second leaf spring 11, and are supplied for alignment supply. It is returned to the upstream part of the trough 1.

  Here, in order to adjust the vibration angle of the return trough 2 for stabilizing the return conveyance, first, the bolt 21 that fixes the connecting plate 10 to the cover 8 of the lower vibrating body 6 and the lower connecting block 17 are connected to the connecting plate 10. The bolt 22 to be fixed and the bolts 31 and 34 for attaching the return trough 2 to the upper connecting blocks 16a and 16b are loosened. Then, while sliding the connecting plate 10, the upper connecting blocks 16 a and 16 b and the lower connecting block 17 are rotated to adjust the inclination angle of the second leaf spring 11. The loosened bolts 21, 22, 31, and 34 may be tightened at the position where the scale 23 of the cover 8 to be instructed has a desired inclination angle.

  At this time, as shown in FIG. 11, a predetermined number of spacers 28 having a predetermined thickness are attached to the front and rear lower connecting blocks 17 according to a desired inclination angle of the second leaf spring 11 before the bolt tightening step. By placing (the rear side is not shown), each lower connection block 17 can be easily positioned with respect to the connection plate 10, and the adjustment operation of the inclination angle of the second plate spring 11 can be performed efficiently. In this embodiment, the specific number of spacers 28 attached is two on the front side when the inclination angle is 17 ° and no rear side (FIG. 11A), and one on the front and rear sides when the inclination angle is 21 ° ( In FIG. 11 (b)), when the inclination angle is set to 25 °, it is sufficient to use two sheets on the rear side (FIG. 11 (c)) without the front side.

  In this component supply device, as described above, the inclination angle of the second leaf spring 11 can be adjusted. Therefore, even when the size or weight of the component changes, the inclination angle of the second leaf spring 11 can be adjusted. Therefore, it is possible to adjust the vibration angle of the return trough 2 at low cost without taking time and to ensure the stability of the return conveyance. Further, by adjusting the inclination angle of the return trough 2 in addition to the adjustment of the vibration angle of the return trough 2, the range in which stable return conveyance can be performed can be expanded.

DESCRIPTION OF SYMBOLS 1 Alignment supply trough 2 Return trough 3 Upper vibration body 6 Lower vibration body 7 1st leaf | plate springs 8 and 9 Cover 10 Connection board 11 2nd leaf | plate spring 12 Chute | shoot 12a Alignment part 13 Feeding block 14 Conveyance path 15 Return Conveyance paths 15a and 15c Inclined surfaces 16a and 16b Upper connecting block 17 Lower connecting block 19 Window 20 Long holes 21, 22, 31, and 34 Bolt 23 Scale 24 Projection (indicating part)
27, 29 Mounting surface 28 Spacer 30 Mounting portion 32 Mounting plate 33 Long hole

Claims (9)

  An alignment supply trough for linearly conveying parts, an upper vibration body to which the alignment supply trough is attached, a lower vibration body connected to the upper vibration body by a pair of front and rear first leaf springs, and the both vibrations A vibration mechanism that vibrates the body, and a return trough that is connected to the lower vibration body by a pair of front and rear second leaf springs and that conveys components in the opposite direction to the alignment supply trough by a return conveyance path. In the vibration type component supply device, as a means for adjusting an inclination angle of the second leaf spring in a vertical plane parallel to the component conveyance direction, the lower vibration is generated in the vertical plane parallel to the component conveyance direction. A connecting plate is slidably attached to the body, and a lower connecting block fixed to the lower end of the second leaf spring is rotatably attached to the connecting plate, and fixed to the upper end of the second leaf spring. Vibratory parts feeder, wherein a coupling block mounted rotatably to the return trough. A scale indicating the inclination angle of the second leaf spring is provided on the connecting plate mounting surface of the lower vibrating body, and an indicator for the scale is provided on the connection plate, so that the inclination angle of the second leaf spring is the connection angle. 2. The vibratory component supply device according to claim 1, wherein the vibration component supply device is configured to match a scale value indicated by an instruction unit of the plate. A position apart from the pivoting axis of the lower connecting block according to claim 1, characterized in that fitted with spacers to close the gap generated between the coupling plate according to the inclination angle of the second leaf spring or 2. The vibration type component supply apparatus according to 2. The upper connecting blocks and lower connection blocks, according to claim 1 to 3, characterized in that with a mounting surface of the shape attachable to the second leaf spring symmetrically with respect to the plane containing the respective rotary shaft The vibration-type component supply device according to any one of the above. Vibratory parts feeder according to any one of claims 1 to 4, characterized in that a means for adjustable inclination angle at parts conveying direction parallel to the vertical plane of the return troughs. The means for adjusting the inclination angle of the return trough rotatably supports one end portion in the transport direction of the return trough at a connecting portion with one second leaf spring and rotates the other end portion. A long hole extending in the moving direction is provided, and a bolt passing through the long hole is fastened to a connecting portion with the other second leaf spring to fix the rotational position of the return trough. Item 6. The vibration type component supply device according to Item 5 . The vibration type according to any one of claims 1 to 6 , wherein a downstream portion of the return conveyance path of the return trough is an inclined surface that is inclined downward toward an upstream portion of the alignment supply trough. Parts supply device. The vibratory component supply according to any one of claims 1 to 7 , wherein the second leaf spring is formed by a single spring piece, or two spring pieces are laminated. apparatus. The alignment supply trough includes an alignment section for aligning parts and a feeding path section for feeding the parts excluded from the alignment section to the return trough. The vibrating component supply device according to any one of claims 1 to 8 , characterized in that the inclined surface has an upward slope toward the surface.

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