JP2001010712A - Oscillating conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability by forming an oscillating device of a rotary driving source to be programmable-controlled and a motive power converting mechanism for converting the rotary driving force of this rotary driving source to the reciprocating linear driving force, and freely adjusting acceleration and deceleration of the reciprocating linear movement of the motive power converting mechanism. SOLUTION: When a control unit H sends the speed command to an AC servomotor 5, the AC servomotor 5 is rotated with low acceleration and high acceleration in one rotation. This operation is repeated so that the rotary movement is converted to the linear movement by a crank mechanism, and a trough 1 is oscillated with the low acceleration in approach and oscillated with the low acceleration in return. Namely, a crank shaft 7 is reciprocated by eccentricity of an eccentric wheel 6 from a shaft 5a of the servomotor. When the lateral force is applied to the shaft 7 between the eccentric wheel 6 and a pivotal wheel 8 during the reciprocation of the shaft 7, the shaft 7 is bent by plate springs 10a, 10b so as to prevent the transmission of the stress for breaking the eccentric wheel 6 and the pivotal wheel 8 to them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration conveyor.

[0002]

2. Description of the Related Art FIG. 24 schematically shows a conventional vibration conveyor of this type. In the figure, a trough 41 is provided on a support 44 by a guide roller 42 so as to be movable left and right. Linear motor 4 at the bottom of 41
3 is attached. An inertia 45 or a counterweight is attached to the primary side or the secondary side. This is configured to be relatively movable with respect to the primary side or the secondary side. When a drive command similar to a sawtooth wave as shown in FIG. 23 is given to the primary side of the linear motor 43, the trough 41 vibrates with a small acceleration in the direction of transferring the object and with a large acceleration in the opposite direction. This has the effect of eliminating chipping of articles and eliminating noise as compared with a conventional vibrating conveyor that transfers an object by repeatedly performing a small jumping motion. However, the configuration of the linear motor 43 is complicated, and the apparatus cost is reduced. High.

[0003] In view of the above-mentioned problems, the applicant has first made an object of providing a vibrating conveyor having a simple structure and a low device cost by providing a vibratingly supported trough and moving the trough in a moving direction of an object. A vibrating conveyor comprising a vibrating mechanism for generating a vibrating force for vibrating at a small acceleration and at a large acceleration in a direction opposite to the transfer direction, wherein the vibrating mechanism includes a servomotor and a rotating shaft of the servomotor. A screw rod that is coupled and both ends are supported by a bearing member, and a ball screw that is screwed to the screw rod, wherein the trough is fixed to the ball screw side or the servomotor side. A unique vibration conveyor has been developed (Japanese Patent Application No. 10-320018).

[0004] However, in the above-mentioned apparatus, since a bowl screw is used, there is a problem that the noise is loud, the durability is problematic due to the backflush and the like, and the acceleration cannot be large.

On the other hand, Japanese Unexamined Patent Publication (Kokai) No. 58-197112 discloses a conveyor having low noise and improved durability as shown in FIG.
5, the one shown in FIG. 26 is disclosed. That is, in the drawing, the conveyor trough 1 'is formed in a U-shaped cross-sectional shape having a bottom wall 1a' and a parallel side wall 1b ', 1b' which are long in the lateral direction, and is provided on a base 2 '. It is supported in the longitudinal direction via the support member 3 'provided. The support member 3 'includes a support base 4 fixed on a base 2' and a guide roller 6 'rotatably supported on a support 5' via a bearing 5 '. A guide portion 7 'fixed on the lower surface of the conveyor trough 1' is mounted on the guide roller 6 'so that the conveyor trough 1' can reciprocate.

A reciprocating drive 8 'for reciprocating the conveyor trough 1 is provided on the base 2'.
The reciprocating drive 8 'can be mainly composed of a servomotor. In this embodiment, a speed reducer 12' is connected via a coupling 11 'to an output shaft 10' of a servomotor 9 'which can rotate forward and reverse. The connecting rod 1 is connected to a crank arm 14 'mounted on the crankshaft 13' via a pin 15 '.
6 'is pivotally connected at one end and the other end of the connecting rod 16' is fixed to the lower surface of the conveyor trough 1 '.
Are attached via pins 18 '. Thus, the servomotor 9 'can rotate at high speed and low speed, and can move the conveyor trough 1 forward and backward at low speed.

[0007] The servomotor 9 'is driven to rotate the crank arm 14' counterclockwise in FIG.
At this time, the crank arm 14 ′ is rotated at a high speed within the range of 180 ° indicated by A, and the crank arm 14 ′ is rotated at 18 degrees indicated by B.
When it is rotated at low speed within the range of 0 °, the connecting rod 1
Via 6 ', the conveyor trough 1' is advanced fast and retracted slowly. When the conveyor trough 1 'moves forward at a high speed, an inertial force greater than the maximum static friction force is applied to the object to be conveyed, and the object is conveyed to the bottom wall 1 of the conveyor trough 1'.
a 'and slide it forward a predetermined distance. When the conveyor trough 1 'retreats at a low speed, the transported object keeps a stationary state at the advanced position. In this way, the conveyed object is gradually conveyed in the X 'direction by the high speed advance and the low speed retreat of the conveyor trough 1'. The conveyor trough 1 'is moved forward and backward at a high speed by transmitting a detection signal, such as a proximity switch (not shown), to a driving device (not shown) of the servomotor 9'.

However, the object to be transported is the conveyor trough 1 '.
No sliding noise occurs on the bottom wall 1a, i.e., on the transport surface, and no collision occurs with the transport surface, and the transported object is transported extremely smoothly without damage.

However, in the above publication, a proximity switch is provided even if not shown, and the proximity switches P ₁ and P ₂ are respectively provided at positions shown by dotted lines near the front end and the rear end of the trough 1. It is thought that there is. This on,
It is considered that the servo motor 9 is rotating at high speed and low speed by turning off. In such a configuration, it is necessary to dispose a proximity switch, and it is conceivable that the proximity switch may be damaged by collision with the trough 1 '.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a vibration conveyor which does not use a proximity switch, is low in cost, has low noise, is durable, and has sufficiently high acceleration. The task is to provide.

[0011]

An object of the present invention is to provide a trough supported by a support so as to be capable of vibrating in a horizontal direction, and a method of moving the trough with a small acceleration in a direction of transferring an object and in a direction opposite to the direction of the transfer. Is a vibrating conveyor comprising a vibrating mechanism for generating a vibrating force for vibrating at a large acceleration, wherein the vibrating mechanism comprises a rotationally controllable rotational drive source, and a reciprocal linear driving force. And a power conversion mechanism that converts the acceleration and deceleration of the reciprocating linear motion of the power conversion mechanism to be arbitrarily adjustable by controlling the rotary drive source.

[0012]

1 to 4 show a vibration conveyor according to a first embodiment of the present invention. A long trough 1 having a U-shaped cross section is provided on a base 2 with a pair of front, rear, left and right columns 3. It is supported so as to be able to reciprocate horizontally in the horizontal direction via rollers 4.

The rotational drive source is an AC servomotor 5, and an eccentric wheel 6 is mounted eccentrically to this rotary shaft, and a pivoting bearing 8 is mounted at a tip end of a crankshaft 7 connected to the eccentric wheel 6, and through this. It is attached to trough 1.

According to the present embodiment, the crankshaft 7
Is a leaf spring 10a that is stacked at two predetermined intervals,
10b, the ends of which are integrally attached to the eccentric ring 6 and the outer ring of the bearing 8 for pivoting.
a.

According to the present embodiment, the AC servo motor 5
Is a rotary motor that can be controlled in a programmable manner, and is digitally controlled. In order to obtain a waveform as shown in FIG. 23, regions of low acceleration in a rotation phase of 0 ° to 180 ° and regions of high acceleration in a rotation phase of 180 ° to 360 ° are defined. For this purpose, a controller H is connected to the AC servomotor 5.

The first embodiment of the present invention is configured as described above. Next, this operation will be described.

The AC servo motor 5 is controlled by the controller H as shown in FIG.
A speed command having a waveform as shown in FIG. 3 is given, and is supplied as a digital control signal. As a result, the AC servo motor 5 rotates 0 ° during one rotation as shown in FIGS. 5A and 5B.
Between 180 ° and 180 °.
During 360 °, high-acceleration rotation is performed. By repeating this, the rotational motion is converted into a linear motion by the crank mechanism, and the trough 1 vibrates at low acceleration in the forward movement and at high acceleration in the backward movement. Therefore, the articles are transported in the direction of arrow A in the trough 1 as described in the related art.

The crankshaft 7 reciprocates due to the eccentricity of the eccentric wheel 6 from the shaft 5a of the servomotor. At this time, a lateral force is applied to the crankshaft 7 between the eccentric wheel 6 and the pivot ring 8 at this time. Is applied, the shaft 7 is now formed by the leaf springs 10a and 10b, so that the eccentric ring 6 and the pivot ring 8 are prevented from being transmitted to the eccentric ring 6 and the pivoting ring 8 with a bending motion.

FIG. 6 conceptually shows the vibration conveyor of FIG. 1, but the eccentric wheel 6 is represented by L. It is pivotally attached at its lower end to the axis 5a of the servomotor 5 and at its upper end to the shaft end of the crankshaft 7. That is, the distance r between the attachment points indicates the eccentric radius, but the trough 1 vibrates with the double stroke. Of course, 180 ° rotates at low acceleration and the next 180 ° rotates at high acceleration.

In the above description, the speed command is used as shown in FIG.
Although the explanation was made using a sawtooth wave as shown in FIG.
Of the servo motor 5 is rotated as shown in FIGS. 5A and 5B.
The position, ie the rotation phase, is from 0 to 180 °, time t₁ of
The differential value between them, that is, the speed is a low speed rotation,
Next time t_Two So, in other words, with a rotation of 180 ° to 360 °
Has a large differential value and high-speed rotation. Immediately the next rotation phase
Has issued a command to move to a lower speed.
Sometimes there is a mechanical delay, t_Two To t_Three Time delay between
There has been a dead center during this time. The following rotation phase
But the same is true. As shown in FIG. 5B, the rotation speed (rp
m) is a speed command time t as shown in FIG. ₁ Until inclined
And the next time t_Two Then the size of the slope
That is, it is decelerating at a high acceleration. However, fixed
Periodically corresponding time t_Two Immediately after that, the next low-speed rotation
Instead of doing so, the time t_Two , T_Three Between
Has become a dead center. Thus, the speed command is faithfully followed.
Even if you do not know, in the trough 1, the goods can be smoothly
Be transported. From high-speed rotation to low-speed rotation or low-speed rotation
Without immediately shifting from high speed rotation to high speed rotation, t_Two To t_Three As
There is no problem in transferring the goods even if there is a long stoppage time.
At the transition point from the high acceleration rotation phase to the low acceleration rotation phase
It is the same as above. Note that t_Two ~ T_Three Stop time is sufficiently 0
It can be small enough to be considered. Show exaggeratedly
is there.

FIG. 7 conceptually shows a mechanism for changing the magnitude of the reciprocating stroke of the crankshaft 7 in such a crank mechanism. Lever L 'with three pivot points P
1, P2, and P3 are provided, and a large amplitude, a medium amplitude, and a small amplitude can be obtained by pivotally connecting one end of the crankshaft to each of them. Actually, it represents the distance (eccentric distance) between the axis of the eccentric wheel 6 and the shaft 5a of the servomotor 5.

In FIGS. 6 and 7, the eccentric wheel 6 has been described as conceptually shown. However, a lever L or L 'as shown in FIG. Obviously, the crank may be pivotally mounted so that a pivotal position can be attached to the upper end portion or the intermediate portion and the lower end portion. Similarly, in FIGS. 6 and 7, the tip of the crankshaft 7 is pivotally attached to the mounting member Q, but may be pivotally attached to the bottom surface of the trough. The pivotally mounted bearing 8 shown in FIG. 1 may be used for this pivotal attachment. 6 and 7, the length of the mounting mechanism Q and the length of the crankshaft are exaggerated, and the dimensional proportions are not accurate.

FIG. 8 shows a vibrating conveyor according to a second embodiment of the present invention. Parts corresponding to those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, in the present embodiment, a base 20 is provided below the trough 12, and this is a guide block 21 having an arc-shaped guide surface (shown in detail in FIG. 11).
The trough 12 is supported on the ground via wheels 23 on the upper surface of the vertical end of the base 20 so that the trough 12 can reciprocate in the horizontal direction via the same wheels 23. Further, a counterweight 30 is integrally fixed to the base 20, so that the total weight of the base is increased. As a result, the trough 12 reciprocates in response to a speed command as shown in FIG. 23 as in the first embodiment, but the base 20 reciprocates with a phase difference of 180 ° due to the reaction force. .
The amplitude is inversely proportional to the size of the total weight including the counterweight 30. Therefore, if the weight is large, the vibration amplitude transmitted to the ground can be reduced to zero or small by reducing the amplitude.

FIGS. 9 and 10 show a vibration conveyor according to a third embodiment of the present invention. Parts corresponding to those of the above-described embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

That is, according to the present embodiment, the trough 1
Reference numeral 2 denotes a guide block 33 which is supported on a support 31 supported on the ground via wheels 32. The guide surface of the wheels 32 has an arc-shaped guide surface as in the second embodiment. In addition, the mounting member 35 is positioned from the bottom of the trough 12.
10, a pair of front and rear and left and right suspension members 40 is attached, and a groove G is formed in the transfer direction as shown in FIG. 10, and the flange portion 20a of the base 20 is slidably engaged with the groove G. Have been combined. Therefore, the trough 12 and the base 20 receive a function of guiding each other in a linear direction, and the base 2
0 is suspended from the trough 12.

In this embodiment, the transmission of the vibration force to the ground can be prevented as in the second embodiment.

FIGS. 12 to 17 show a vibration conveyor 50 according to a fourth embodiment of the present invention. A straight trough 51 is mounted on a trough mounting frame 60A which will be described in detail later. A motor mount 60C for mounting a motor M is supported below the trough 5 by a frame 60B so as to be able to vibrate left and right.

The trough mounting frame 60A is
13. Side plates 52a and 52b attached to both side walls by bolts 55 as shown in FIG. 13, and frame members fixed to these by welding and assembled with respective frame members as shown in FIG. . The frame body is rectangular when viewed in plan, and has long sides.
3b, frame members 54a and 54b fixed to both ends thereof and forming short sides, and further, both frame members 53a and 53b.
And intermediate frame members 55a and 55b connecting the two. The intermediate frame member 55b is reinforced by a similarly shaped intermediate frame member 55c to receive a crank driving force as described later.

As is apparent from FIGS. 12 and 15, guide members 56a and 56b for guiding the horizontal roller 70 are further provided between the frame members 54a and 54b forming short sides and the intermediate frame members 55a and 55b. And guide rail members 57a and 57b for guiding a roller 69, which will also be described later, are mounted between the pair and left and right frame members 53a and 53b. The mounting frame 60A is firmly constituted by the above frame members, and
Are firmly fixed to the trough 51 via side plates 52a, 52b fixed to both side walls of the trough 51.

The gantry 60B is, as described above, a trough 51.
Are supported to be able to vibrate left and right freely.
13, a pair of columns 61a and 61b, connecting members 62a and 62b connecting these lower ends, and FIG.
The connecting members 63a and 63b for connecting the lower portions of the front end and the rear end, and the intermediate connecting members 64a and 64b for connecting the intermediate portions, and the intermediate connecting members 64a and 64b.
As shown in FIG. 13 and intermediate connecting members 65a and 65b that connect front and rear.

Beam members 67a, 67b are fixed to the upper ends of the columns 61a, 61b as shown in FIGS. 12 and 13, and a pair of front, rear, left and right bearing members 68 are mounted thereon.
Is fixed, and a vertical roller 69 is rotatably supported on the vertical roller 69. The guide rail member 57 fixed to the trough mounting frame 60A as shown in FIG.
a, 57b. As a result, the trough 51 is supported to be able to vibrate left and right (arrow A) in FIG.

FIG. 1 shows an intermediate portion between the beam members 67a and 67b.
3, a roller mounting base 71 is fixed, and a horizontal roller 70 having a vertical axis is supported on the mounting base 71. The guide member 56 fixed to the trough mounting frame 60A as shown in FIGS.
The movement of the trough 51 is regulated by sliding the outer peripheral surfaces of the trough 51 a and 56b.

Next, the motor mount 60C will be described. It is located between the trough 51 and the intermediate connecting members 64a, 64b, but also forms a frame structure, as shown in FIGS. 15 to 17, is substantially rectangular in plan view, and forms a long side. Frame members 72a, 72b and frame members 73a, 73 forming short sides connecting these both ends.
b. The upper end of the motor M is inserted through this and is fixed via a motor mounting plate 74.
In order to reinforce the frame structure, the reinforcing plate 75 is bolted to the right side of the frame member 72 on the right side.
a, 72b.

As shown in FIG. 13, bearing members 68 are attached to both ends of the connecting members 64a and 64b of the gantry 60B in the front, rear, left and right directions. It is in pressure contact with the guide rail member 70 fixed to the frame members 72a and 72b forming the long sides of the mounting base 60C. That is, the motor mounting member 60C
Are supported by the rollers 69 together with the motor M, and are provided so as to be able to vibrate left and right in FIG.

As shown in FIG. 13, a pair of front, rear, left and right guide plates 80a, 80b hanging downward are fixed to an intermediate portion of the frame members 72a, 72b. 60B connecting member 64
A pair of horizontal rollers 67a 'and 67b' are rotatably supported at the intermediate portion between the rollers a and 64b via a roller mounting plate 66. The horizontal rollers 67a 'and 67b' are always in sliding contact with the guide plates 80a and 80b to restrict the movement of the trough 51. I do. A crank arm K is fixed to a distal end of a rotating shaft d of the motor M, and an eccentric wheel W is eccentrically mounted on the rotating shaft d, and is rotatably supported. As shown in FIG. 14, it is pivotally connected to a U-shaped pivot member 82 via a pin p. The pivot member 82 is fixed to the above-described reinforcing intermediate frame member 55c of the trough mounting frame 60A. Accordingly, the driving force of the rod R is applied to the trough 51 via the intermediate frame members 55b and 55c and the frame members 53a and 53b forming the long sides in FIG. 15 and the side plates 52a and 52b fixed thereto. It is configured to be driven left and right. The axis d of the motor M is on the center line CC of the trough 51 as shown in FIG.

The operation of the fourth embodiment of the present invention has been described above. Next, the operation will be described.

A speed command as shown in FIG. 23 is given to the motor M as in the above-described embodiment. As a result, the drive rod moves forward and slowly in a rotational phase as shown in FIGS. That is, in FIG. 12, the trough 51 moves straight with a small acceleration to the left and a large acceleration to the right, and
The object within 1 moves forward while sliding to the left in FIG. At this time, the motor mounting base 60C is supported by the rollers 69 in inverse proportion to the weight of the entire trough mounting frame 60A fixed to the trough 51 side and the weight of the entire motor mounting base 60C and the motor M. Move. As a result, the movement of the trough 51 side and the motor M side in the horizontal direction on the gantry 60B is performed with a phase shift of 180 degrees, so that the movement becomes zero. Further, according to the embodiment of the present invention, the trough 51 vibrates left and right by the rotation of the roller 69 on the gantry 60B, but the horizontal roller 70 is guided between the rollers by the guide members 56a and 56b as clearly shown in FIG. Sliding contact can prevent lateral displacement, and the trough 51 can perform linear motion without any problem. The lower motor mounting base 60C is also supported by the vertical rollers 69 on the intermediate connecting members 64a and 64b of the gantry 60B and vibrates left and right. However, as also shown in FIG. 67a ', 67
Guided by the guide plates 80a and 80b by b ', the linear motion is also performed accurately. Therefore, the reaction force to the ground due to the above-described action and reaction can be ideally reduced to zero.

As clearly shown in FIG. 15, the vibration conveyor 50 according to the embodiment of the present invention is configured symmetrically with respect to the center axis CC of the trough 51, that is, the axis of the rotation axis d of the motor M is Although it is on the center axis CC and linearly moves the drive rod R by the rotational movement of the crank arm K, the unbalanced force in the lateral direction with respect to the trough 51 can be minimized.

According to the first embodiment, the rotation axis of the motor 5 is horizontal and the crank rod 7 gives a vertical component to the trough 1. According to the present embodiment, the vertical component is provided. Can be 0. Further, the crank arm K and the crank rod R are connected to the trough mounting frame 6.
Since it is housed in 0A, the structure can be made compact as a whole.

FIGS. 18 to 22 show a vibrating conveyor according to a fifth embodiment of the present invention, which is indicated generally by 100. FIG. It is to be noted that the same reference numerals are given to portions corresponding to the fourth embodiment, and detailed description thereof will be omitted.

According to the present embodiment, as clearly shown in FIG. 19, the drive unit mounting members 85a, 85b are provided between the frame members 53a, 53b in the trough mounting frame 60A.
, And a power conversion mechanism W is mounted thereto via a fixing member 93 as clearly shown in FIG. That is, the motor M is fixed to the frame member 72b via the motor mounting plate 73 in the same manner as in the above-described embodiment, but by tightening the bolt B to the fork of the crank arm K on the rotating shaft d, An eccentric shaft 86 is inserted through the other side Ka and fixed by a nut N. A spherical surface forming member 87 is attached to the shaft end, and the spherical surface is received by a bearing ring 88. It is held in the position shown by the holding ring 94. FIG.
As shown in FIG. 1, the above-described bearing ring 88 is held on the outer peripheral surface of a rectangular slide main body 89, and the outer peripheral portion thereof has a rectangular slide piece 9 as shown in FIG.
0a, 90b are fixed by bolts, and a number of balls 9 are formed in grooves formed on the outer surfaces of the slide pieces 90a, 90b.
1, which is slidably fitted in a linear groove formed by a pair of strips 92a, 92b, as clearly shown in FIG. The eccentric shaft 86 is rotatable with respect to the bearing ring 88 and the spherical body 87 with respect to the slide body.

Next, the operation of the present embodiment will be described. The rotation of the motor M causes the crank arm K to rotate the rotation axis d.
The eccentric shaft 86 rotates around the rotation axis d. As a result, as shown by a solid line in FIG.
When the shaft d rotates about 90 degrees from this point, the crank arm K assumes a position shown by a dashed line. As a result, the eccentric shaft 86 is at the position indicated by the dashed line, and the slide main body 89 is moved to the position also indicated by the dashed line. That is, the pair of band members 92
It moves to the left in the figure guided by a and 92b. The belt-like members 92a and 92b at this time are also indicated by alternate long and short dash lines, but this means that the trough 51 has moved downward in FIG.

Further, in FIG. 21, the slider main body 89 takes the position shown by the dashed line by rotating about 90 degrees from the position shown by the solid line to the position shown by the dashed line. As a result, the belt-shaped members 92a and 92b fitted thereto are moved upward. As described above, the trough 51 performs the same movement to the left and right in FIG. 18 as in the above embodiment.
According to the present embodiment, the power conversion mechanism W is much more compact than the above-described embodiment, as clearly shown in FIG. Since a force is applied only in the direction in which the trough moves the object, ideal straight-line vibration can be performed and the object can be transported more smoothly.

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

For example, in the above-described first to fourth embodiments, the rotational force of the AC servomotor is directly transmitted to the crank mechanism. However, in order to further increase the torque, the torque is transmitted to the crank mechanism via a speed reducer. You may make it transmit. The same applies to the fifth embodiment. A reduction gear may be connected to the rotation shaft d of the motor M, and the power conversion mechanism W may be attached to this output shaft.

In the above embodiment, the AC servomotor is used as the servomotor.
A servo motor may be used.

Further, in the above embodiment, the speed command as shown in FIG. 23 is given to the AC servomotor 5, but instead of this, it may be further differentiated, that is, give an acceleration command. Alternatively, this may be integrated and supplied to the AC servomotor as a position command. In short, it is sufficient if the waveform is such that the acceleration is small when the trough is moving forward and the acceleration is large when the trough is moving backward.

In the above embodiment, 0 ° to 180 °
Is set to low acceleration and 180 ° to 360 ° is set to high acceleration. However, the angle range is not limited to 0 ° to 200 °.
° may be a low acceleration rotation and 200 ° to 360 ° may be a high acceleration rotation. Alternatively, the reverse is also possible. However, the transfer direction of the articles on the trough is reversed.

In the above-described first embodiment, the crankshaft 7 is composed of two leaf springs 10a and 10b, but may be replaced with one leaf spring. Alternatively, it may be a simple rod-shaped member.

Alternatively, as shown in FIG. 11, a vertical wall portion 21a may be provided outside the block 21 having an arcuate guide surface so that the wheels 23, that is, the troughs 1 and 12 can be slid in the horizontal direction without fail. Good. Any other means for guiding linearly may be used. In the above-described embodiment, such a vertical wall is indicated by a dashed line.

Although the crank mechanism and the W of the fifth embodiment have been described as the power conversion mechanism for converting rotation into reciprocating motion, the invention is not limited to this, and a cam mechanism may be used, for example.

[0053]

As described above, according to the vibration conveyor of the present invention, it is possible to operate quietly, and various acceleration and low speed modes can be easily obtained at low cost.

[Brief description of the drawings]

FIG. 1 is a side view of a vibration conveyor according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line [2]-[2] in FIG.

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

FIG. 4 is a sectional view taken along the line [4]-[4] in FIG.

FIG. 5 is a chart showing a temporal change of the rotation phase and the rotation speed (rpm) of the AC servomotor of the present invention, wherein A is the rotation phase, and B is the rotation speed.

FIG. 6 is a schematic diagram of the first embodiment of the present invention.

FIG. 7 is a schematic diagram illustrating a modification of the first embodiment of the present invention, and is a diagram illustrating a variable stroke mechanism.

FIG. 8 is a side view according to a second embodiment of the present invention.

FIG. 9 is a side view of a vibration conveyor according to a third embodiment of the present invention.

10 is a sectional view taken along the line [10]-[10] in FIG.

FIG. 11 is an enlarged sectional view in the [11]-[11] direction in FIG. 8;

FIG. 12 is a partially cutaway side view of a vibrating conveyor according to a fourth embodiment of the present invention.

FIG. 13 is a front view of the same.

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

FIG. 15 is a plan view showing a part of the trough in FIG.

FIG. 16 is a plan view showing the trough attachment frame in FIG. 12 with a part thereof cut away.

17 is a plan view of FIG. 12 from which a motor mounting base is removed, that is, a plan view in the direction of line [17]-[17] in FIG.

FIG. 18 is a partially broken side view according to a fifth embodiment of the present invention.

FIG. 19 is a plan view showing a part of the trough in FIG.

FIG. 20 is an enlarged sectional view of a main part in FIG. 18;

FIG. 21 is a plan view showing the operation in the enlarged sectional view.

FIG. 22 is a plan view showing the same other operation.

FIG. 23 is a time chart of a speed command supplied to the primary side of a linear motor of a conventional vibration conveyor.

FIG. 24 is a schematic diagram of a vibration conveyor driven by a conventional linear motor to which the same command is applied.

FIG. 25 is a side view of another conventional vibration conveyor.

FIG. 26 is a cutaway plan view of the same part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 12 Trough 5 Servo motor 6 Eccentric wheel 7 Crankshaft 8 Pivot wheel 50, 100 Vibration conveyor 51 Trough 60A Trough mounting frame 60B Mount 60C Motor mount H Controller M Motor W Power conversion mechanism

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Atsuhiro Kanto 150 Motoyashiki, Miyakomachi, Toyohashi-shi, Aichi Prefecture Shinko Electric Machinery Co., Ltd. (72) Inventor Kyoji Murashiki 100 Takegahana-cho, Ise-shi, Mie Prefecture F-term (reference) 3F037 AA01 BA03 CA07 CB03 CC05

Claims (9)

[Claims] 1. A trough supported by a support so as to be capable of vibrating in a horizontal direction, and an exciting force for vibrating the trough with a small acceleration in a moving direction of an object and a large acceleration in a direction opposite to the moving direction. A vibrating conveyor comprising: a vibrating mechanism that generates a vibration; the vibrating mechanism includes a programmable driveable rotary drive source; and a power conversion mechanism that converts a rotary drive force of the rotary drive source into a reciprocating linear drive force. A vibration conveyer wherein the acceleration and deceleration of the reciprocating linear motion of the power conversion mechanism can be arbitrarily adjusted by controlling the rotary drive source. 2. The rotary drive source according to claim 1, wherein a rotation axis of the rotation drive source is vertical.
The vibratory conveyor of claim 1, wherein the conveyor is substantially on a central axis of the trough. 3. The rotary drive source is fixed to a base supported on the ground by a support means so as to be capable of vibrating in a horizontal direction. The power conversion mechanism is a crank mechanism. The vibration conveyor according to claim 1, wherein the vibration conveyor is attached to a trough. 4. A linear guide means is provided between the trough and a base fixing the rotary drive source, and the base is suspended from the trough via the guide means. The power conversion mechanism is a crank mechanism, and a tip end of a crankshaft of the trunk mechanism is attached to the trough.
The vibration conveyor described in the above. 5. The vibration conveyor according to claim 1, wherein said rotary drive source comprises a rotary motor and a speed reducer for reducing a rotation speed of said rotary motor. 6. The vibration conveyor according to claim 3, wherein the crank mechanism has a stroke adjusting mechanism that changes a stroke of the linear motion. 7. The support member includes a wheel rotatably supported on one of the ground and the trough, and an arcuate guide rail fixed to the other and guiding the wheel. Item 7. The vibration conveyor according to any one of Items 1 to 6. 8. A pair of vertical guide plates is fixed to one of the trough and the ground, and a horizontal roller is pivotally supported to the other, and / or a pair of vertical guides is fixed to one of the base and the ground. The plate according to any one of claims 3 to 7, wherein the trough and / or the base is guided in a direction in which an object is transferred by fixing a plate and supporting a horizontal roller on the other side. Vibration conveyor as described. 9. The power conversion mechanism includes a crank arm attached to a rotating shaft of the rotary drive source, an eccentric shaft attached to the crank arm eccentrically to the rotating shaft, and the eccentric shaft pivotally mounted. 9. The device according to claim 5, further comprising a slider, and a guide member fixed to the trough side for guiding the slider in a direction perpendicular to a longitudinal direction of the trough. Vibrating conveyor.