JP2020040775A - Vibratory parts carrier - Google Patents

Abstract

To provide a vibratory parts carrier adapted to reciprocally displaceably support a parts-carrying component having a linear carrying passageway by a support member separate from a vibration mechanism and easily enable an accurate adjustment of a projection angle of the parts-carrying component.SOLUTION: A vibratory parts carrier is configured by fixing a lower end of a support member 3 to a movable table 9 provided movable in a parts-carrying direction with respect to a base 2, providing a coil spring 13 biasing the movable table 9 in a direction away from a stationary table 10 fixed on the base 2, fixing a screw shaft 15 inserted in the parts-carrying direction into the movable table 9 to the stationary table 10, and screw-coupling a positioning nut 17 regulating the movement in the parts-carrying direction of the movable table 9 against an elastic force of the coil spring 13 to the screw shaft 15. Due to this, by merely changing the coupling position of the positioning nut 17 to the screw shaft 15, the movable table 9 is moved in the parts-carrying direction, thereby enabling an accurate adjustment of the projection angle of a trough 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration-type component conveying device that vibrates a component conveying member having a linear conveying path by driving a vibration mechanism, and conveys components on the conveying path linearly.

  As a device to align and supply small components to the next process while transporting them by vibration, it has a component transport member such as a trough with a linear transport path formed, and drives the vibration device to drive the component transport member 2. Description of the Related Art A vibratory component conveying device that conveys components on a conveying path linearly by vibrating is often used.

  In the above-mentioned vibration type component conveying device, generally, as a vibration mechanism, an electromagnet and a movable iron core are arranged so as to face each other at a predetermined interval, and an energized state and a non-energized state are set for the electromagnet. The vibration (reciprocal displacement) of the movable iron core generated by repeating the above operation is amplified by a leaf spring and transmitted to the component conveying member.

  However, since the component conveying member is supported by a leaf spring constituting a vibration mechanism, if the rigidity of the leaf spring is increased so that the component conveying member can be stably supported even during the component conveying, the electromagnet may be accordingly moved. There is a problem that the output increases and the power consumption increases.

  On the other hand, in Patent Document 1, a component conveying member having a linear conveying path is connected to a vibration mechanism through a rod-shaped vibration transmission member extending along the component conveying direction. There has been proposed a vibration-type component transfer device that is connected to a base below a component transfer member by a separate support member and is supported so as to be reciprocally displaceable in a component transfer direction. According to this configuration, the plate spring of the vibrating mechanism does not need to support the component conveying member, and only needs to have sufficient rigidity to vibrate the component conveying member. Can be stably supported.

JP 2014-227263 A

  By the way, in the vibration type component conveying device proposed in Patent Document 1, the lower end portions of a pair of supporting members before and after supporting the component conveying member (downstream and upstream in the component conveying direction) are moved relative to the base. It is fixed to a movable table movably provided in the component transport direction, and a bolt for fixing the movable table is screwed into the base through an elongated hole provided in the movable table in the component transport direction. In other words, the movable table can change its fixed position to the base within the range of the length of the long hole in the component transfer direction, and by changing the fixed position of the movable table, the support member is elastically deformed and the component transfer is performed. The projection angle (also called “vibration angle”) when the member is reciprocated can be adjusted.

  However, when adjusting the projection angle, the bolts passing through the long holes of the movable base are loosened once, and then the movable base is moved and then tightened again, so that the position of the movable base tends to shift during the work. There are difficulties. For this reason, the projection angle of the component transport member may slightly deviate from the target value, and the set component transport speed may not be obtained, and the component supply capability to the next process may be insufficient or the component transport may be unstable. There is. In addition, there is a concern that the time required for the adjustment work may be lengthened in order to accurately adjust the projection angle of the component conveying member to the target value.

  In view of the above, the present invention provides a vibration type component conveying apparatus in which a component conveying member having a linear conveying path is supported by a support member separate from the vibration mechanism so as to be capable of reciprocating displacement, and the projection angle of the component conveying member can be easily adjusted. It is an object to be able to adjust with high accuracy.

  In order to solve the above problems, the present invention provides a component transport member having a transport path that extends linearly in the component transport direction, a base disposed below the component transport member, and a component transport member and a base. A supporting member that supports the component transport member so as to be capable of reciprocating displacement in the component transport direction, and a vibration mechanism that imparts vibration in the component transport direction to the component transport member via a vibration transmission member. In the vibration-type component conveying device that vibrates the component conveying member by the vibrating mechanism and linearly conveys the components on the conveying path, the supporting member has a lower end in a component conveying direction with respect to the base. A fixed base fixed to the base in a state in which the movable base is fixed to the movable base and is opposed to the movable base in the component transport direction; and the movable base is separated from or approaches the fixed base. An elastic member that biases in the A screw shaft fixed to the fixed base in a state where the movable base is inserted into the movable table in the component conveying direction, and screw-coupled to the screw shaft to move the movable table in the component conveying direction against the elastic force of the elastic member. A positioning nut for regulating is provided, and by changing the coupling position of the positioning nut with respect to the screw shaft, the position of the movable table in the component transport direction changes, and the support member is elastically deformed, and the reciprocation of the component transport member is performed. A configuration is adopted in which the projection angle at the time of displacement is adjusted.

  According to the above configuration, the movable table to which the lower end of the support member supporting the component transport member is fixed is moved in the component transport direction only by changing the coupling position of the positioning nut with respect to the screw shaft fixed to the fixed table. Since the position of the movable table does not shift during the operation, the projection angle of the component conveying member can be easily and accurately adjusted.

  In addition, in the present invention, it is desirable to suppress the bending stress in the vibration transmitting member by adding the following configuration.

  For example, when the vibration transmitting member extends along the component conveying direction, the position of the center of gravity of the vibrating mechanism is set on the axis of the vibration transmitting member to prevent generation of a bending moment in the vibration transmitting member. In addition, when a vibration isolator supporting the vibration mechanism is provided, the vibration mechanism supporting position of the vibration isolator is set near the axis of the vibration transmitting member, and the vibration mechanism and the vibration isolator are set. The bending moment generated in the vibration transmitting member due to the shearing force acting between the member and the member may be suppressed.

  Further, the vibration transmission member is formed in a rod shape having a uniform cross-sectional shape in the longitudinal direction, is arranged in parallel in a direction orthogonal to the component transport direction, and has one end rotatably attached to the component transport member. It is good to adopt a configuration that can be used. With this configuration, the plurality of vibration transmitting members can be attached to the component conveying member and the vibration mechanism in a posture in which bending stress is unlikely to be generated in a well-balanced manner, and even if bending stress is generated, stress concentration is unlikely to occur. be able to.

  Further, in a normal design, the center of gravity of the component conveying member is often located above the axis of the vibration transmitting member, but an adjustment weight for lowering the position of the center of gravity is attached to the component conveying member. This makes it possible to bring the position of the center of gravity of the component conveying member closer to the axis of the vibration transmitting member and reduce the bending stress of the vibration transmitting member.

  By suppressing the bending stress of the vibration transmitting member in this way, it is possible to prevent the damage of the vibration transmitting member, thereby improving the durability of the entire apparatus, increasing the energy efficiency required for component transport, and stabilizing the component transport operation. Can be planned.

  As described above, the vibration-type component transport device of the present invention can move the movable table in which the lower end of the support member that supports the component transport member is fixed in the component transport direction simply by operating the positioning nut. Therefore, the projection angle of the component conveying member can be easily and accurately adjusted. Therefore, it is possible to obtain the component conveying speed as set without taking the trouble of adjusting the projection angle, and it is possible to perform stable operation while securing appropriate component supply capability.

Front sectional view of the vibration type component conveying device of the first embodiment FIG. 1 is a sectional plan view taken along the line II-II of FIG. Arrow view from the direction A in FIG. Arrow view from the direction B in FIG. FIG. 1 is a sectional view taken along the line VV in FIG. 1. Sectional view along the line VI-VI in FIG. Front sectional view of the vicinity of the base of the vibration-type component transfer device of the second embodiment FIG. 7 plan view Front sectional view of the vicinity of a vibration mechanism of a vibration-type component transport device according to a third embodiment Arrow view from the C direction of FIG. (A) is a front cross-sectional view of the vicinity of the front end of the base of the vibration-type component transport device according to the fourth embodiment, and (b) is a view from the direction D in (a).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment. As shown in FIGS. 1 and 2, the vibration-type component transport device of this embodiment is disposed below a trough (component transport member) 1 having a transport path 1 a extending linearly in the component transport direction. A pair of front and rear support members 3 for connecting the trough 1 to the base 2 to support the trough 1 so as to be able to reciprocate in the component conveying direction, and a connecting rod (vibration transmitting member) 4 to the trough 1. And a vibrating mechanism 5 for imparting vibration in the component transport direction through the vibration mechanism 5.

  Here, the support member 3 is a plate-like member having elasticity (see FIG. 3). Then, by vibrating (reciprocating displacement) the trough 1 by the vibrating mechanism 5, the components on the transport path 1a are transported linearly and supplied to the next step from the discharge end of the transport path 1a. ing.

  The trough 1 includes a trough main body 6 in which a transport path 1a is formed, a trough receiver 7 attached to a lower surface of the trough main body 6, and a trough support 8 supporting the lower surface of the trough receiver 7. Are connected to the connecting rod 4 as described later, and the upper ends of the support members 3 are bolted to the front and rear end surfaces of the trough receiving stand 8, respectively. The lower end of each support member 3 is connected to the base 2 as described later.

  The base 2 has guide walls 2a erected on both left and right sides of the upper surface (in the width direction of the apparatus), and a pair of front and rear movable tables 9 and a fixed table 10 are provided between the two guide walls 2a. The pair of movable tables 9 are guided by the inner surfaces of both guide walls 2a and are movable in the component conveying direction, and are fixed by fixing bolts 11 which are screwed into the upper surface of the base 2 through central long holes 9a. It is fixed to 2. On the upper surface of each movable base 9, a mounting part 9b to which the lower end of the support member 3 is bolted and a spring receiving part 9c facing each other with the fixed base 10 therebetween in the component transport direction are provided.

  One end of a pair of left and right shafts 12 is fixed to the spring receiving portion 9c of the front movable table 9, and the other end of each shaft 12 is slidably inserted into the spring receiving portion 9c of the rear movable table 9. Have been. In each shaft 12, a compressed coil spring (elastic member) 13 and a collar 14 are fitted in series around the outer periphery between the spring receiving portions 9c of both movable tables 9, and each coil spring 13 holds the collar 14 The movable tables 9 are urged in directions away from each other (from the fixed table 10). The collar 14 can be omitted by appropriately extending the coil spring 13.

  On the other hand, the fixed base 10 is bolted to the upper surface of the base 2 in a state of facing the two movable bases 9 in the component transport direction. Then, a screw shaft 15 having a screw on the outer circumference is passed through a through hole (a hole without a screw) penetrating the center portion in the component conveying direction. The position of the screw shaft 15 with respect to the fixed base 10 is fixed by tightening a fixing nut 16 that is screw-connected on both sides of the fixed base 10. Both ends of the screw shaft 15 are respectively passed through through holes that pass through the spring receiving portion 9c of the movable base 9 in the component conveying direction, and a positioning nut 17 is screwed to a protruding portion from the spring receiving portion 9c. . Accordingly, even if the fixing bolt 11 that fixes the movable table 9 to the base 2 is loosened during the adjustment operation described later, the positioning nut 17 is opposed to the elastic force of the coil spring 13 and the components of each movable table 9 The movement in the transport direction (the direction away from each other) is regulated.

  Further, on the rear upper surface of the base 2, three columnar vibration-proof rubbers (vibration-proof members) 18 for supporting the vibration mechanism 5 are provided.

  The vibration mechanism 5 includes a lower vibrating body 19 supported by three vibration-proof rubbers 18, a rectangular frame-shaped upper vibrating body 20 connected to the connecting rod 4 above the lower vibrating body 19, A pair of front and rear leaf springs 21 for connecting the upper vibration body 19 to the upper vibration body 20, an electromagnet 22 fixed to the upper surface of the lower vibration body 19, and the upper vibration body 20 facing the electromagnet 22 with a slight gap therebetween. It comprises a movable iron core 23 to be attached and a weight 24 to be attached to the lower vibrating body 19. The leaf spring 21 is formed by stacking a plurality of plate-shaped spring pieces, and the upper end is bolted to the upper vibrator 20 and the lower end is bolted to the lower vibrator 19. Further, the weight 24 is a plate-like side weight 24a extending upward from both left and right sides of the lower vibrating body 19, and two weights attached between the two side weights 24a while vertically sandwiching the rear end of the trough body 6. It consists of block-shaped weights 24b and 24c (see FIG. 4).

  When the electromagnet 22 is energized, an intermittent electromagnetic attractive force acts between the electromagnet 22 and the movable iron core 23, and vibration is generated in the upper vibrating body 20 by the electromagnetic attractive force and the elastic force of the leaf spring 21. This vibration is transmitted to the trough 1 via the connecting rod 4. At this time, the lower vibrating body 19 and the weight 24 vibrate in a direction opposite to that of the upper vibrating body 20 so as to suppress the propagation of the vibration to the base 2 together with the anti-vibration rubber 18.

  Here, as shown also in FIGS. 5 and 6, the connecting rod 4 is a round bar-shaped member having a uniform cross-sectional shape in the longitudinal direction, and a pair of the connecting rods 4 are symmetrically arranged in parallel. The rear end of each connecting rod 4 is attached to a mounting member 25 having a U-shaped cross section. The mounting member 25 is attached to the upper vibrating body 20 together with the upper end of the front leaf spring 21 of the vibrating mechanism 5. Bolted. On the other hand, the front end of each connecting rod 4 is rotatably connected to the trough receiver 7 of the trough 1 via an angle adjusting mechanism 26 described later. The cross-sectional shape of the connecting rod is not limited to the circular shape as in this example, but may be a square or a rectangle.

  The angle adjusting mechanism 26 includes a columnar connecting member 27 that slidably penetrates a connecting portion 7a provided on the rear end side of the trough receiver 7 in the width direction and both ends of the connecting member 27 to the trough receiver 7. And a U-bolt 28 to be fixed. The connecting member 27 is provided with slits 27a at large diameter portions on both sides, and the front end of the connecting rod 4 is inserted into a mounting hole extending in the radial direction along each slit 27a. That is, the angle of the connecting rod 4 with respect to the trough 1 can be adjusted by loosening both U-bolts 28 and rotating the connecting member 27 around its axis. Further, if the U bolt 28 is loosened, the connecting rod 4 can slide in the axial direction, so that the positional relationship between the connecting rod 4 and the connecting member 27 in the front-rear direction can be adjusted.

  This vibration-type component conveying device has the above-described configuration. After loosening the fixing bolt 11 that fixes the movable base 9 on the base 2, the vibration-type component conveying apparatus is screwed to a screw shaft 15 fixed to the fixing base 10. When the positioning nut 17 is rotated to change the coupling position of the positioning nut 17 to the screw shaft 15, the movable table 9 moves in the component conveying direction, and the support member 3 having the lower end fixed to the movable table 9 is elastically deformed. Then, the angle of the trough 1 with respect to the base 2 changes. That is, by simply rotating the two positioning nuts 17 separately, the positions of the front and rear movable tables 9 in the component transport direction can be changed independently of each other, and the projection angle at the time of the reciprocating displacement of the trough 1 can be adjusted. .

  In addition, since the front and rear movable tables 9 are urged in directions away from each other by the coil spring 13, they can be smoothly moved by the rotation of the positioning nut 17, and there is no backlash regardless of the moving direction. Position adjustment without hysteresis is possible. Therefore, the projection angle of the trough 1 can be easily and accurately adjusted.

  When adjusting the projection angle of the trough 1, it may be better to move the front and rear movable tables 9 in the same direction by the same amount. In such a case, the position where the two positioning nuts 17 are connected to the screw shaft 15 is fixed, and the position where the two fixing nuts 16 are connected to the screw shaft 15 is adjusted. If they are moved at the same time while being kept, the adjustment work can be performed more efficiently.

  Further, in this vibration-type component conveying device, a pair of connecting rods 4 for connecting the trough 1 and the vibration mechanism 5 are arranged in parallel in a well-balanced manner, and are adjusted with respect to the trough 1 and the vibration mechanism 5 by adjusting the angle adjusting mechanism 26. It is mounted in a position where bending stress is unlikely to be generated, and the vibration of the vibration mechanism 5 can be efficiently transmitted to the trough 1. In addition, the cross-sectional shape of each connecting rod 4 is uniform even when bending stress is generated and is hard to concentrate. Since the connecting rod 4 is formed in the shape of a round bar, it is difficult for the connecting rod 4 to be damaged, and the parts can be transported stably.

  7 and 8 show a second embodiment. This embodiment is based on the first embodiment, and partially changes the mechanism for adjusting the projection angle of the trough 1 so that a tension coil spring is used as an elastic member for urging each movable table 9 in the component conveying direction. 29 is used.

  That is, in the second embodiment, the spring receiving portion 9c of the first embodiment is changed to a spring mounting portion 9d and a screw support portion 9e on the front and rear movable tables 9, respectively, and the shaft 12 and the coil spring of the first embodiment are changed. 13 and the collar 14, the hook at one end of the pair of left and right extension coil springs 29 is replaced with a hook engaging portion 9f projecting rearward from the spring mounting portion 9d of the front movable base 9 and the hook at the other end. Each of the tension coil springs 29 urges both movable bases 9 toward each other (toward the fixed base 10) by hooking the pins 9g projecting upward from the rear movable base 9 respectively.

  The screw shaft 15 penetrating the fixed base 10 has one end in the insertion hole (hole without a screw) of the spring mounting portion 9 d of the front movable base 9 and the other end in the screw support of the rear movable base 9. The positioning nut 17 is screwed to the center of the movable table 9 in the longitudinal direction with respect to each movable table 9. As a result, even if the fixing bolt 11 that fixes the movable table 9 is loosened, the positioning nut 17 moves in the component transport direction (direction of approaching each other) of each movable table 9 against the elastic force of the extension coil spring 29. Is regulated.

  Therefore, similarly to the first embodiment, by adjusting the projection angle of the trough 1 by moving the movable table 9 in the component conveying direction by loosening the fixing bolt 11 and rotating the positioning nut 17.

  9 and 10 show a third embodiment. In this embodiment, based on the first embodiment, the position of the center of gravity of the vibration mechanism 5 is set on the axis of the connecting rod 4 extending along the component conveying direction.

  Then, the arrangement of the three anti-vibration rubbers 18 of the first embodiment is changed, and the three anti-vibration rubbers 18 arranged in a line on the left and right at the position of the center of gravity of the vibrating mechanism 5, that is, near the axis of the connecting rod 4, The block-shaped weight 24c arranged along the lower surface of the rear end of the trough body 6 supports the lower surface of the rear-end extension of the block-shaped weight 24c. Here, each anti-vibration rubber 18 is fixed to the upper surface of a support column 30 erected on the projecting portion 2 b at the rear end of the base 2.

  Further, the vibration mechanism 5 is also supported by a vibration isolating unit (vibration isolating member) 31 provided on the front side thereof. The anti-vibration unit 31 is bolted to the base 2 together with a support plate 32 whose upper end is bolted to the block-shaped weight 24c of the vibration mechanism 5 and an L-shaped lower end of the support plate 32. The vibrating mechanism 5 is supported by the support plate 32 near the axis of the connecting rod 4, and is supported by the elastic washer 33 and the elastic collar 34 to the vibration base 2 during operation. Is suppressed. The support plate 32 is formed of a steel plate or the like, has bent portions on both left and right sides for securing strength, and has a notch 32a at an upper portion for avoiding interference with the connecting rod 4 and the mounting member 25. A hole 32b through which a bolt for fixing the lower end of the leaf spring 21 to the lower vibrating body 19 is provided is provided in the lower portion.

  In the third embodiment, with the above configuration, it is possible to prevent the bending moment of the connecting rod 4 due to the deviation between the position of the center of gravity of the vibrating mechanism 5 and the axis of the connecting rod 4, and to prevent the three vibration-proof rubbers 18 and the three Since the position where the vibration unit 31 supports the vibration mechanism 5 is set near the axis of the connecting rod 4, the connecting rod is caused by the shearing force acting between the vibration mechanism 5 and the vibration-proof rubber 18 and the vibration-proof unit 31. 4 can also suppress the bending moment. For this reason, the bending stress of the connecting rod 4 can be made smaller than in the first embodiment, and the durability, energy efficiency, and stability of the component transfer operation of the entire apparatus are excellent.

  FIGS. 11A and 11B show a fourth embodiment. This embodiment is based on the first embodiment, in which an adjustment weight 35 is attached to a lower portion on the front side of the trough 1 so as to lower the center of gravity of the trough 1. The adjustment weight 35 includes a side plate 35a sandwiching a front portion of the trough support 8 from the left and right sides, a front plate 35b attached between portions of the both side plates 35a extending forward from the trough support 8, and a front surface of the front plate 35b. And a plurality of auxiliary plates 35c to be attached to the main body. The number of attached auxiliary plates 35c may be adjusted as needed.

  In the fourth embodiment, even if the center of gravity of the trough 1 is located above the axis of the connecting rod 4 due to the requirement of the design surface of the trough 1, the position of the center of gravity of the entire trough 1 including the adjusting weight 35 is Since the bending stress of the connecting rod 4 can be reduced closer to the axis than in the first embodiment, the same effect as in the third embodiment can be obtained.

  The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 trough (parts transporting member)
1a Conveying path 2 Base 3 Support member 4 Connecting rod (vibration transmitting member)
5 Exciting mechanism 9 Movable table 10 Fixed table 13 Coil spring (elastic member)
15 Screw shaft 16 Fixed nut 17 Positioning nut 18 Anti-vibration rubber (anti-vibration member)
26 Angle adjustment mechanism 29 Tension coil spring (elastic member)
31 Anti-vibration unit (anti-vibration member)
35 Adjustment weight

Claims (4)

A component transport member having a transport path extending linearly in the component transport direction, a base disposed below the component transport member, and connecting the component transport member and the base to transfer the component transport member to the component A supporting member that supports the component conveying member so as to be reciprocally displaceable in a direction, and a vibrating mechanism that imparts vibration in the component conveying direction to the component conveying member via a vibration transmitting member, wherein the vibrating mechanism vibrates the component conveying member. In a vibration-type component transport device that linearly transports components on the transport path,
The support member has a lower end fixed to a movable base provided so as to be movable in the component transfer direction with respect to the base, and fixed to the base in a state of facing the movable base in the component transfer direction. A fixed base, an elastic member for urging the movable base in a direction away from or approaching the fixed base, and a screw shaft fixed to the fixed base in a state of being inserted into the movable base in a component conveying direction. A positioning nut that is screw-coupled to the screw shaft and regulates movement of the movable table in the component conveying direction against the elastic force of the elastic member;
By changing the coupling position of the positioning nut with respect to the screw axis, the position of the movable table in the component transfer direction changes, the support member is elastically deformed, and the projection angle at the time of the reciprocal displacement of the component transfer member is adjusted. A vibration-type component conveying device characterized in that:   The vibration transmission member extends along the component conveying direction, the center of gravity of the vibration mechanism is set on the axis of the vibration transmission member, and a vibration isolator supporting the vibration mechanism is provided. 2. The vibration-type component conveying device according to claim 1, wherein a vibration mechanism supporting position of the vibration member is near an axis of the vibration transmission member.   The vibration transmission member is formed in a rod shape having a uniform cross-sectional shape in the longitudinal direction, is arranged in parallel in a direction orthogonal to the component transport direction, and has one end rotatably attached to the component transport member. The vibration-type component conveying device according to claim 1 or 2, wherein   4. The vibration-type component conveying device according to claim 1, wherein an adjustment weight for lowering the position of the center of gravity is attached to the component conveying member.

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