JP2595294Y2 - 3D vibrator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional vibrator used in the industry for sorting and filling articles.

[0002]

2. Description of the Related Art Conventionally, vibrations of a predetermined amplitude are continuously applied to a hopper, a chute, a conveyor, or the like by the rotation of an eccentric weight attached to a rotating shaft of a motor for use in conveying articles or eliminating clogging. A vibration generating device for generating the vibration is used.

As shown in FIGS. 7 and 8, an output shaft 51 of the motor 50 is provided on one side or both sides of the motor 50.
A fixed weight 52 eccentric to the output shaft 51 is fixed, and the adjustment weight 53 eccentric to the output shaft 51 is rotatable by loosening a tightening bolt 54. The weights 52 and 53 are covered by a cover 55.

In each case, the tightening bolt 54 is loosened to rotate the adjusting weight 53 in accordance with the working condition of the workpiece, and the vibration force (excitation force) is controlled within a range from the maximum to zero. After being adjusted to the required amount, the bolt was fixed to the output shaft 51 by tightening the tightening bolt.

In the conventional apparatus described above, when converting the vibration force (excitation force), the rotation of the motor is stopped once, the cover of the motor is removed, and the tightening bolt is loosened to adjust the vibration. Since it is necessary to rotate the weight and set an appropriate phase difference between the pair of weights and adjust the vibration amount to a desired value, the operator must go to the work site and perform the operation manually each time. In addition, the main processing is temporarily interrupted by the adjustment operation, and the attachment and detachment of the cover and the loosening of the tightening bolt are troublesome, so that the work efficiency is significantly reduced.

[0006] This device cannot convert external vibration force (excitation force) at all when the motor rotates, and because of its large amplitude generated at low speed rotation when the motor is started and stopped, For example, a table or a hopper to which the device is attached abnormally vibrates, which adversely affects the main processing and the operation.

Further, since most of the vibrations by this device are performed in the rotating direction of the adjusting weight, and only in one of the vertical direction and the front-rear and left-right directions, for example, molding sand is filled in a metal frame. And the like, there is a limit in the filling capacity, and uneven filling occurs, resulting in defective products in the own process. And other various problems.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. The second eccentric weight for adjustment is movable by moving the second shaft, and the second shaft is moved forward and backward. By means of one-touch operation from outside, regardless of whether the drive shaft is rotating or stopped by the rotating means, both can be converted into an arbitrary phase difference and the vibration force (excitation force) generated by the machine can be easily and quickly It is an object of the present invention to provide a vibrator that can be changed and that can obtain excitation of a three-dimensional motion in front and rear and left and right horizontal directions and vertical and vertical directions, and also in a tilt direction.

[0009]

Means of the present invention for achieving the above object are a machine, an oscillating body floatingly supported by a plurality of rams on the machine, and an oscillating body. And a pair of horizontal vibration generators attached to the lower side of the oscillating body and arranged on both sides of the vertical vibration generator, wherein the vertical vibration generator is A first shaft vertically supported in the housing box, a second shaft slidably connected to the first shaft on the same axis as the first shaft, and rotating in synchronization with the first shaft, A screw cylinder for screwing to a screw portion provided around the second shaft, and rotatably supported by the housing box, and for stopping movement in the axial direction,
A first eccentric weight fixed to the first shaft, a second eccentric weight fixed to the female screw cylinder of the second shaft, rotating means linked to the first shaft, and linked to the second shaft. Having a reciprocating means, the horizontal vibration generator is slidably connected to the first shaft coaxially with the first shaft supported laterally into the storage box, A second shaft that rotates synchronously with one shaft, and is screwed to a screw portion provided around the second shaft, and is rotatably supported by the housing box, and a screw cylinder for stopping movement in the axial direction. A first eccentric weight fixed to the first shaft, a second eccentric weight fixed to the female screw cylinder of the second shaft, rotating means linked to the first shaft, and linked to the second shaft. And a reciprocating means.

[0010]

According to the present invention, the following effects are achieved by the above-described structure. To apply vibration to the rocking body attached to the aircraft,
By operating the vertical vibration generator only, the horizontal vibration generator only, or the vertical and horizontal vibration generators at the same time, the vibration can be extracted freely in the horizontal, vertical, tilt directions and their three dimensions. Can be obtained.

That is, when the vertical vibration generator attached to the center of the lower part of the oscillator is operated, the oscillator is caused to swell up and down, left and right, and obliquely due to the vertical eccentric weights attached to the first and second shafts. A vibrating vibration is given.

When the pair of horizontal vibration generators is operated, vertical vibrations are given to the oscillator by the eccentric weights attached to the first and second shafts.
By using these vertical and horizontal vibration generators individually or in combination, desired vibrations are generated according to the processing.

Further, the exciting force is controlled by remotely controlling the advancing / retreating means provided on each of the eccentric weights, so that one of the eccentric weights moves immediately even while the vibrator is operating, and the phase difference between the pair of eccentric weights is changed. Can be arbitrarily converted, so that an exciting force corresponding to the phase difference can be obtained.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a three-dimensional vibrator according to the present invention will now be described with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of a three-dimensional vibrator A in an apparatus according to the present invention. In this embodiment, the rotational movement by a rotating means described later is performed in a horizontal direction and a tilt direction. , Which is supported in a floating manner by a machine frame 1 having a predetermined framework, and a plurality of coil springs, air springs, and other elastic machines 2, 2, 2,... The oscillating body 3 includes a vertical vibration generator B mounted below the oscillating body 3.

The vertical vibration generator B is shown in FIG.
As shown in the figure, the first shaft 6 and the second shaft 7 supporting the first eccentric weight 4 and the second eccentric weight 5 are disposed vertically (vertically). The hollow first shaft 6 is supported by bearings 9 and 10 provided on the one side wall 1a and the intermediate wall 1b, and is connected to the connection shaft 11 inserted and fitted to the first shaft 6 on the one side wall 1a. A rotating means 12 such as a motor is rotated at a predetermined speed in cooperation therewith. The first eccentric weight 4 formed in a fan shape on the connecting shaft 11 is connected to the base thereof in the housing box 8. The fixed vibration is obtained by driving the connection shaft 11 by the rotating means 12 after being fixed.

The rotating means 12 is attached to the outside of the storage box 8 via a tension member 13.

The second shaft 7 is connected to the storage box 8
On the same axis as the first shaft 6, one end 7 a is slidably fitted and connected to the hollow portion 6 a of the first shaft 6, and the first member 7 is engaged by a connecting member 14 such as a spline. It is configured to rotate synchronously with the shaft 6.

A screw portion 15 having a high lead angle is provided around the middle of the second shaft 7, and a bearing 16 provided on the other side wall 1c and the intermediate wall 1b of the housing box 8 is provided on the screw portion 15. , 17 is screwed into a female screw cylinder 18 which is supported while being restricted from moving in the axial direction. The linear movement caused by the vertical movement of the second shaft 7 is performed along the lead of the screw portion 15. By converting the rotational motion into a rotational motion of the screw cylinder 18, an arbitrary amount of rotational angle can be obtained.

The above-mentioned second eccentric weight 5 is formed in the same shape as the first eccentric weight 4 such as a sector shape, and its base is attached to the outer end of an outer cylinder 19 which supports the female screw cylinder 18. It is fixed so that it can rotate with the rotation of the second shaft 7 connected to the first shaft 6 via the female screw cylinder 18.

The second shaft 7 described above is arbitrarily moved in the axial direction by the reciprocating means d. The second shaft 7 can be a motor type, a hydraulic cylinder such as a hydraulic cylinder, and a cam type. Crank type, rack and pinion type and the like are used.

In the case of using an electric motor, as shown in FIG. 3, a support frame 20 attached to the other side wall 1c of the housing box 8 is used.
An elevating piece 22 provided with a locking groove 21 on the outer periphery is fixed to the second shaft 7 protruding inward, and provided on a rotating shaft 24 of a pilot motor 23 attached to a side portion of the support frame 20. Eccentric body
25 is engaged with the locking groove 21 of the elevating piece 22, a predetermined rotation angle is obtained by operating the pilot motor 23, and the second shaft 7 is arbitrarily moved up and down with the elevating piece 22 Go to

The forward / backward means d is provided with a rotation detector 26 such as a rotary encoder at the outer end of the rotary shaft 24 of the motor 23 to detect the rotation angle of the motor 23 and provide the forward / backward means d. The rotation angle of the second shaft 7 connected to
The rotation can be arbitrarily changed in an external remote place, and the rotation angles of the first and second eccentric weights 4 and 5, ie, the phases can be adjusted.

The lubricating oil is circulated in the housing box 8 and supplied to the bearings 9, 10, 16, 17 and sliding parts so that each part moves smoothly. is there.

In FIG. 1, reference numeral 27 denotes an object to be vibrated. For example, a metal frame or the like, which is placed on the swinging member 3 and uniformly filled with molding sand used for casting, is used.

The vibrating machine A according to the first embodiment having the above-described configuration is arranged such that the rotating means 12 in the vertical vibration generator B is started to rotate the first and second shafts 6 and 7 at a predetermined speed.
The first and second eccentric weights 4, 5 fixed to these shafts 6, 7 turn to give vibration to the oscillator 3.

This vibration is caused by the movement of the vibrating body 27 in three dimensions of horizontal, vertical, and inclined. The phase difference between the first and second eccentric weights 4 and 5 is set to 0 to 180 °
For example, when the molding sand is uniformly packed in the metal frame 27, the molding sand may be moved from the center of the metal frame 27 in the circumferential direction in a straight line, a curved line, or a spiral shape. Conversely, the metal frame 27 can be moved from the outer periphery to the center, and the molding sand is uniformly filled in complicated gaps and the like of the metal frame 27.

FIGS. 4 and 5 show a second embodiment of the three-dimensional vibrator A in the apparatus according to the present invention. In this embodiment, the rotational movement of the rotating means 12 is performed in the horizontal direction, the tilt direction, and the horizontal direction. The motion is converted into a motion in the vertical direction, and a machine frame 1 having a predetermined framework is mounted on the machine frame 1 with a plurality of coil springs, air springs and the like.
, The vertical vibration generator B attached to the lower center of the oscillator 3, and the vertical vibration generator B attached to the lower side of the oscillator 3. It comprises a pair of horizontal vibration generators C1 and C2 arranged on both sides.

Of these, the machine base 1, the ammunition units 2, 2, 2,..., The oscillating body 3 and the vertical vibration generator B have the same configuration as in the first embodiment described above, and the operation and effect are also the same. Detailed description will be omitted for the sake of performance.

Then, a pair of horizontal vibration generators C1, C
2 is a first and second shafts 6 of the vertical vibration generator B,
While 7 is mounted vertically (vertically),
In this apparatus, first and second shafts 30 and 31 supporting a first eccentric weight 4 and a second eccentric weight 5 are mounted in a horizontal direction (horizontal). Description will be made using the reference numerals assigned to the vibration generator B.

First, the hollow first shaft 6 is supported inside the storage box 8 by bearings 9 and 10 provided on one side wall 1a and the intermediate wall 1b. A rotating means 12 such as a motor is linked to the shaft 6 so as to rotate at a predetermined speed. The first eccentric weight 4 formed in a fan shape on the first shaft 6 is placed in the housing box 8. Then, the base is fixed, and the first shaft 6 is driven by the rotating means 12, whereby a predetermined vibration is obtained.

Further, the second shaft 7 is connected to the accommodation box 8
On the same axis as the first shaft 6, one end 7 a is slidably fitted and connected to the hollow portion 6 a of the first shaft 6, and the first portion 7 a It is configured to rotate synchronously with the shaft 6.

A screw portion 15 having a high lead angle is provided around the middle of the second shaft 7, and a bearing 16 provided on the other side wall 1c and the intermediate wall 1b of the housing box 8 is provided on the screw portion 15. , 17 is screwed into a female screw cylinder 18 that is supported while being restricted from moving in the axial direction. By converting the rotational motion into a rotational motion of the screw cylinder 18, an arbitrary amount of rotational angle can be obtained.

The second eccentric weight 5 is formed in the same shape as the first eccentric weight 4 such as a sector and the like. The base of the second eccentric weight 5 is connected to the outer end of an outer cylinder 19 for supporting the female screw cylinder 18. It is fixed so that it can rotate with the rotation of the second shaft 7 connected to the first shaft 6 via the female screw cylinder 18.

The above-mentioned second shaft 7 is arbitrarily moved in the axial direction by the reciprocating means d. A fluid cylinder such as a hydraulic cylinder or an electric motor commonly used in the art, a cam type, Crank type, rack and pinion type and the like are used.

In the case of using a hydraulic cylinder such as a hydraulic cylinder, as shown in FIG. 6, a hydraulic cylinder 30 is provided on a support frame 20 attached to the other side wall 1c of the storage box 8, and
31 is connected to the second shaft 7 via a connecting member 32, and a concave portion 33 provided in the connecting member 32 is engaged with a ridge 34 of the support frame 20, so that the shaft by the rotation of the rotating means 12 is formed. 6,
7 is prevented from rotating.

The housing box 8 is filled with lubricating oil and supplied to the bearings 9, 10, 16, 17 and sliding parts so that each part moves smoothly. is there.

In FIG. 4, reference numeral 27 denotes a vibrating body, which is a metal frame placed on the swinging body 3 and uniformly filled with molding sand used in a casting operation, for example.

When only the vertical vibration generator B is operated, the vibrator A according to the second embodiment having the above-described structure performs the operation shown in the first embodiment, and moves horizontally to the vibrated body 27. The motion is performed in three dimensions: vertical, vertical.

A pair of horizontal vibration generators C1, C2
When only the actuator is operated, vibration in the vertical direction is given. Further, the vertical vibration generator B and the pair of horizontal vibration generators C1 and C2 can be operated at one time. In this case, A more effective vibration can be obtained than the three-dimensional vibration obtained by the first embodiment, and the advancing / retreating means d, d, d of these devices B, C1, C2 may be appropriately changed. By controlling, vibrations of various modes can be given to the vibrated body 27 during driving, and the operation / movement of these advancing / retreating means d, d, d
If a program such as a sequencer or a microcomputer is programmed in advance, a desired exercise can be automatically extracted as time elapses in the work.

[0041]

[Effect of the Invention] The device of the present invention configured as described above, when it is desired to convert the vibration force to be generated, is operated from the outside of the storage box storing the eccentric weight, and the eccentric weight can be easily and one-touched. Since the phase difference can be changed steplessly within the range of 0 to 100%, the conversion operation can be performed continuously without interrupting the processing, so that the processing conditions of the workpiece can be changed. In addition, since the vibration force can be appropriately adjusted, the processing accuracy is greatly improved.

Further, the phase difference of the eccentric weight can be changed during rotation of each shaft by the rotating means in combination with the above-mentioned operation. Vibration is completely eliminated, and there is no damage to the workpiece to which the apparatus is attached or any adverse effect on the processing, and the processing accuracy is improved.

In particular, this vibrator can apply a desired form of vibration to a non-vibrating body by appropriately operating the vertical and horizontal vibration generators, and the vibration can be extracted in three dimensions. Obtained in the direction. And so on.

[Brief description of the drawings]

FIG. 1 is a front view of a three-dimensional vibrator according to the present invention, showing a state in which a vertical vibration generator is attached.

FIG. 2 is a plan view showing a state where an oscillating body in FIG. 1 is removed.

FIG. 3 is a sectional view showing the vertical vibration generator in FIG.

FIG. 4 is a front view of the three-dimensional vibrator according to the present invention, showing a state where vertical and horizontal vibration generators are attached.

FIG. 5 is a plan view showing a state where an oscillating body in FIG. 4 is removed.

FIG. 6 is a cross-sectional view showing the horizontal vibration generator in FIG.

FIG. 7 is a partially cutaway front view showing a conventional vibration generator.

FIG. 8 is a side view showing a relationship between a fixed weight and an adjustment weight in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine stand 2 Ammunition 3 Oscillator B Vertical vibration generator C1, C2 Horizontal vibration generator 4 First eccentric weight 5 Second eccentric weight 6 First shaft 7 Second shaft 8 Storage box 12 Rotating means 15 Screw part 18 Female thread tube d Retraction means

Claims (1)

(57) [Scope of request for utility model registration] 1. A machine base, an oscillating body floatingly supported by a plurality of rams on the gantry, a vertical vibration generator attached to a lower center of the oscillating body, A pair of horizontal vibration generators attached to the lower side and disposed on both sides of the vertical vibration generator, the vertical vibration generator includes a first shaft supported vertically in a storage box, A second shaft slidably connected to the first shaft on the same axis as the first shaft, and rotating in synchronization with the first shaft,
A screw cylinder for screwing to a screw portion provided around the second shaft and rotatably supported by the housing box, and for stopping movement in the axial direction, and a first eccentric fixed to the first shaft. A weight, a second eccentric weight fixed to the female screw cylinder of the second shaft,
A rotating means linked to the first axis, and an advancing / retreating means linked to the second axis, wherein the horizontal vibration generating device includes a first axis supported laterally in a housing box; A second shaft that is slidably connected to the first shaft on a coaxial line with one shaft, and that rotates in synchronization with the first shaft,
A screw cylinder for screwing to a screw portion provided around the second shaft and rotatably supported by the housing box, and for stopping movement in the axial direction, and a first eccentric fixed to the first shaft. A weight, a second eccentric weight fixed to the female screw cylinder of the second shaft,
A three-dimensional vibrator comprising: a rotating unit linked to the first shaft; and an advancing / retracting unit linked to the second shaft.