JP2002347913A - Vibrating conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibrating conveyor including an exciter of simple constitution which ensures easy maintenance. SOLUTION: The vibrating conveyor is composed of a trough whereon an object to be transported is loaded, a base whereon the trough is supported through a leaf spring in such a way as capable of reciprocative vibration, a mounting member to support the base through a resilient piece, and an exciter 7 to apply vibrations to the base, wherein the exciter 7 to be mounted on the base 4 is composed of a pair of motors 9 whose exciting weights 13 are attached to a rotary shaft 11 and a gear mechanism 8 to rotate the two motors 9 in the opposite directions so that the weights 13 are positioned in axial symmetry to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating conveyor capable of vibrating and conveying an object to be conveyed obliquely with respect to a material conveying surface by vibration, and more particularly, to a transfer case on which the object is mounted. The present invention relates to a vibration conveyor including a frame on which the transfer case is reciprocally oscillated via a vibration mechanism, a fixed support portion for elastically supporting the frame, and a vibrator for applying vibration to the frame. .

[0002]

2. Description of the Related Art A conventional vibration conveyor disclosed in Japanese Patent Publication No. 59-15850 as shown in FIGS. 9 to 11 is known. That is, a pair of gears 112 is provided on a base-excited vibration conveyor of a two-mass system including a transfer case (trough) 101 and an underframe (base) 104.
a and 112b, and a pair of rotating shafts 109a and 109b driven and rotated at the same speed in opposite directions by a gear mechanism composed of a belt 116, and both rotating shafts 109a and 109b.
A vibration exciter having unbalanced weights 111a and 111b fixed to 109b, rubber springs 130 and 131 for connecting the mounting plate 102 of the transfer case 101 and the underframe 104 so as to relatively vibrate, and a rubber spring mounting. The elastic unit 103 including the plate 133 is provided. According to such a configuration, the vibration angle of the transfer case 101 can be easily changed, and the bending vibration in the longitudinal direction of the transfer case 101 hardly occurs.

[0003]

The vibrator of the vibration conveyor according to the prior art supports a pair of upper and lower rotating shafts between a pair of left and right vertical plate frames forming an underframe, and applies the rotating shafts to the respective rotating shafts. A pair of gear mechanism gears that engage with each other for fixing the counter weight and rotating both rotating shafts in opposite directions, and an electric motor fixed to an underframe to drive one of the rotating shafts in conjunction with the belt. It was configured with.

That is, since the components of the underframe have an integral structure that also serves as the components as the vibrator, high dimensional accuracy is required between the members. It is relatively complicated and requires a high degree of processing accuracy, for example, it cannot be separated from the assembling as an underframe, and its maintenance is not good.

On the other hand, the transfer case is supported so as to be able to move freely by fitting the lower ends of a plurality of legs hanging therefrom to a cylindrical vibrating rubber fixedly mounted on an underframe. However, there is room for improvement in that the amount of vibration movement is within a range due to elastic deformation of rubber and cannot be set so large.

An object of the present invention is to provide a vibrating conveyor having a simpler vibrator and improved maintenance. Another object of the present invention is to provide a case supporting structure capable of increasing the amount of vibration movement of the transfer case without difficulty.

[0007]

According to a first aspect of the present invention, there is provided a transport case on which an object to be transported is mounted, an underframe on which the transport case is reciprocally oscillated via a vibration mechanism, and an underframe. In a vibration conveyor consisting of a fixed support portion for elastically supporting the vibrator and a vibrator for imparting vibration to the underframe, the vibrator has a pair of motors having a vibrating weight attached to a rotating shaft,
And a linkage drive means for rotating both motors in opposite directions so that the weights have a line-symmetrical positional relationship with each other, and are provided on the underframe.

According to the first aspect of the present invention, the vibrator includes two motors each having a vibrating weight on the rotating shaft, and the two motors are arranged such that the weights have a line-symmetrical positional relationship with each other. It is composed of a small number of components, such as linked drive means for driving the motors to rotate in opposite directions, and does not require any transmission means such as chains or gears for driving the weights. The transmission structure is simpler than that of the prior art, and the rotating shafts fitted with the motor shafts and weights are mounted not on separate shafts but on a single motor shaft. Will also be advantageous. Further, since the vibration exciter is mounted on the underframe to be vibrated, vibration can be efficiently applied to the underframe.

According to a second aspect of the present invention, in the configuration of the first aspect, the linking drive means is constituted by a gear pair fitted to each of the two rotating shafts in a state of having the same number of teeth and engaging with each other. It is characterized by having.

According to the second aspect of the present invention, the linking driving means can be easily constituted by a small number of two parts of a single type of gear, and the body positional relationship between the two weights can be established by gear engagement. It is possible to accurately maintain the desired setting state. And the effect by the structure of Claim 1 can also be exhibited.

According to a third aspect of the present invention, in the first or second aspect, the vibrating mechanism is constituted by a leaf spring spanned over the transport case and the underframe. . According to the configuration of claim 3, in addition to the operation of the configuration of claim 1 or 2, the following operation is obtained. In other words, by appropriately setting the length of the leaf spring provided over the transport case and the underframe, it is possible to arbitrarily set the vibration amplitude of the transport case to a desired value,
It is possible to freely set a larger amplitude or a smaller amplitude than before.

A fourth aspect of the present invention is characterized in that, in the third aspect, the mounting angle of the leaf spring with respect to the underframe is variable. According to the configuration of the fourth aspect, in addition to the effect of the configuration of the third aspect, it is possible to adjust the conveyance state to an appropriate state.

[0013]

1 and 2 show a vibrating conveyor A according to the present invention. FIG. 1 is a side view of the vibration conveyor A, and FIG. 2 is a sectional view of the vibration conveyor. The vibrating conveyor A includes a plurality of troughs (an example of a transport case) 1 having a substantially U-shaped cross section and a plurality of troughs 1 that are vibrated portions disposed at substantially equal intervals in the longitudinal direction. A plurality of bases (an example of an underframe) 4 that supports the base 4 through a leaf spring (an example of a vibration mechanism) 2 and a plurality of attachments that elastically support the base 4 through a plurality of elastic tools 5 that are arranged at equal intervals in the longitudinal direction. It comprises a member (an example of a fixed support portion) 6 and a vibrator 7 provided at one end of the base 4. The base 4 is long like the trough 1, and the leaf spring 2, the elastic member 5, and the mounting member 6 are symmetrically provided along the longitudinal direction of the trough 1.

The trough 1 includes a plurality of unit troughs 1a each having a substantially gutter shape serving as a transfer surface on which an object to be transferred is placed and transferred,
A distal end trough 1b is connected and integrated, and a shielding plate 1c for blocking a base end side thereof is provided.
The base 4 is configured by symmetrically arranging a pair of unit angle members 4a having a unit length and having an L-shaped cross section and connected in a long shape.

The elastic member 5 is a vibration isolating member that supports the base 4 so as to be elastically displaceable with respect to the device fixing portion 3 such as a factory floor or the ground, and is made of an elastic material such as a wound spring or a rubber lump. Have been. The attachment members 6 are for attaching the elastic members 5 to the device fixing portion 3, and are provided for each elastic member 5.

FIG. 3 shows a side view of the vibration exciter 7, the leaf spring 7, and a mounting structure thereof. The vibrator 7 is fixed to the end of the base 4 corresponding to the material supply side end 1a of the trough 1 via a mounting frame 14. The vibrator 7 has a pair of RV (rotary vibrator) motors 9, 9, which are rotationally driven at the same speed in opposite directions by the linkage driving means 8, arranged in the width direction of the trough 4, and mounted on the mounting frame 14. It is configured. The link drive means 8 is provided at the upper end of the rotary shaft 11 of each RV motor 9 and has the same number of gears 1 that mesh with each other.
A gear mechanism constituted by 0 and 10 functions to accurately and synchronously rotate a pair of RV motors 9 and 9 that are driven to rotate in opposite directions.

FIG. 4 shows a detailed structure of the vibrator 7.
FIG. 4A is a top view, and FIG. 4B is a rear view. RV
The motor 9 includes an electric motor unit 12, a rotating shaft 11 protruding from both ends of the electric motor unit 12, and unbalance weights 13, 13 for vibration excitation provided at both ends of the rotating shaft 11. A gear 10 is mounted on the upper end of the shaft 11 so as to be relatively unrotatable. By the gear mechanism 8, the respective unbalance weights 13, 13 are connected to each other by the rotating shafts 11,
The two RV motors 9, 9 are linked and rotated so as to be symmetrical to each other with respect to the bisector existing between the two, and to always maintain the line symmetry.

As shown in FIG. 5, the unbalance weight 13 is a fixed weight 13A fixed to the rotating shaft 11.
And an adjustment weight 13B that can be moved and fixed in the circumferential direction of the rotating shaft 11, and the intensity of vibration can be variably set by adjusting the position of the adjustment weight 13B. Both weights 13A, 13B are the same parts in the shape of a fan with a slit, and can be fastened and fixed to and released from the rotating shaft 11 by a single bolt 13a. Rotary axis 1
As shown in FIG. 6, a scale for adjusting the angular position of the adjustment weight 13B with respect to the fixed weight 13A is engraved on the upper or lower shaft end of the shaft 1, and when the power supply is 50 Hz, the scale is adjusted up to 180 degrees. The maximum is 90 for 60Hz
The degree adjustment allowance is applied respectively.

That is, when the mounting angle α is 0 degree, the weights 13A and 13B are located diametrically opposite each other with respect to the rotating shaft 11, and the vibration accompanying the rotation of the RV motor 9 is minimized (in a state where no vibration is theoretically generated). ), The unbalance degree as the unbalance weight 13 increases as the mounting angle α increases, and the vibration is set to be strong. The maximum vibration occurs when the mounting angle α is 180 degrees for 50 Hz and 90 degrees for 60 Hz. In addition, as shown in FIG.
Are covered with covers 17, 17 for each motor, and the upper unbalance weights 13, 13 are covered with a single large cover 18 to include the gear mechanism 8.

As shown in FIG. 3, the leaf spring 2 is
Upper bracket 15 fixed to the side surface 1s of the
Over the lower bracket 16 fixed to the side surface 4s of the
They are connected as a set. Upper bracket 15
Is a substrate 15a bolted to the trough side surface 1s,
An attachment piece 15b protruding laterally from the board 15a is provided, and the upper end of the leaf spring 2 is bolted to each of both sides of the attachment piece 15b. The lower bracket 16 having the same structure as the upper bracket 15 is composed of a board 16a bolted to the base side surface 4s and a mounting piece 16b protruding laterally from the board 16a.
Are bolted to the lower ends of the leaf springs 2 on both sides.

The mounting angle θ of the leaf spring 2 is set so that the trough 1 becomes higher toward the lower side in the vibration feed direction with respect to the base 4.
It is inclined in the direction in which it falls down in the vibration feeding direction, so that the objects to be conveyed on the trough 1 can be sequentially sent in one direction while being thrown obliquely upward. If the leaf spring 2 is laid down more by reducing the mounting angle θ, the vibration direction can be made more prominent, the moving component in the vertical direction can be increased, and the leaf spring 2 can be increased by increasing the mounting angle θ. If it is made to stand more, the vibration direction can be made more sluggish, and the moving component in the front-rear direction can be made large so that it can be quickly conveyed. As described above, the mounting angle θ of the plate spring 2 erected between the transfer case 1 and the underframe 4 can be changed by changing the position of the mounting bolt of the board 15a to the transfer case 1 by an elongated hole, and By changing the position of the mounting bolt to 4 with an elongated hole, it is variable.
As a result, an optimal transport state can be obtained.

The operation of the vibrating conveyor A will be described. In FIG. 1, when the two RV motors 9, 9 are energized and the vibrator 7 is operated, the base 4 is moved in the longitudinal direction in the transport direction (left-right direction on the paper). Vibrates repeatedly, thereby causing trough 1
However, the vibration direction is changed obliquely up and down by the leaf spring 2 and is amplified and vibrated violently. The transported object placed on the trough 1 is sequentially moved to the lower side in the transport direction (right side on the paper) while being obliquely jumped upward, and is discharged from the front end trough 1b.

The vibrating conveyor A can also function as an incineration ash sieving machine, and as shown in FIG.
Generated vibration has a 45 degree inclination from the horizontal,
The pushed-up conveyed object floats in the air, and falls and moves forward due to gravity. This operation is repeated at a speed of 900 times per minute, so that the conveyed object on the trough 1 can be smoothly conveyed.

During the transport in the trough 1, the specific gravity difference sorting action works, so that those having a high specific gravity are biased to the lower layer and those having a low specific gravity are biased to the upper layer. Other examples of the conveyed object include waste home appliances such as refrigerators crushed by a crusher. Copper, copper, etc.
Aluminum, coated electric wires, etc., medium specific gravity materials are plastic, packing, rubber, etc., and light specific gravity materials are urethane, sponge, styrofoam, etc.

[Alternative Embodiment] As shown in FIG.
A screen 20 made of a plate material having a large number of round holes 23 is interposed at the upper and lower middle positions of the trough 1 with
A first discharge port 21 for discharging a leaking substance that has fallen downward and a screen 20 at the end of the trough 1 are provided.
A vibrating conveyor B of a sieving type provided with second discharge ports 22 for discharging conveyed objects that do not fall down from above may be used.

That is, due to the function of the screen 20 made of a punching metal or the like, while the conveyed object input from the input port 24a is vibrated and conveyed, the conveyed object having a diameter smaller than the diameter of the round hole 23 (less than the screen size) is Since the object to be transferred is dropped from the screen 20, the object to be conveyed can be distinguished between large and small as the object is conveyed, and the object can be conveniently collected in the distinguished state.

<< Other Alternative Structure >> The linkage drive means 8 may be an electric control means such as a feedback control for providing a rotation speed sensor for each motor and making the rotation speeds of the two RV motors 9 and 9 exactly coincide with each other. . Also, one RV motor 9
May be a single RV motor 9 with a simple rotating shaft. The vibration mechanism 2 can be variously changed in addition to a leaf spring, a wound spring, a composite reinforcing material such as FRP, or a hard rubber. In the case where accurate synchronization is not required, instead of the gear pair, the link drive means of the pair of motors may be a link drive means which is driven by a feedford so as to have the same rotational speed.

[0028]

As described above, according to the vibration conveyor A of the first aspect, the rotating shaft 11 of the electric motor 12 is used.
R directly driven by attaching unbalance weight 13 to
A V motor 9 is used, and both R
Since the V motors 9 and 9 are driven to rotate in the opposite directions at the same speed, the two RV motors 9 and 9 and the vibrator 7 with a small number of parts and a simple structure of the gear mechanism 8 are used. , And the vibration for transportation can be efficiently applied to the underframe 4 while making it economical and rational.

In the vibration conveyor A according to the second aspect, the effect of the configuration of the first aspect is exhibited, and the linkage driving means 8 can be simplified by a single type using only two gears 10 and a small number of parts. In addition, there is an advantage that the relative positional relationship between the two weights 13, 13 can always be accurately maintained in a desired setting state by gear engagement.

According to the third aspect of the present invention, the vibration conveyer A has any of the effects of the first and second aspects, and the length of the leaf spring provided between the transport case and the underframe can be appropriately adjusted. By setting to, the vibration amplitude of the transfer case can be set to a desired value arbitrarily, and it is possible to freely set a larger amplitude or a smaller amplitude than before, and it is rich in usability and versatility. it can. Claim 4
According to the vibration conveyor A described in the above, any one of the effects according to the configuration of the third aspect can be obtained, and an optimum transport state can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a vibrating conveyor.

FIG. 2 is a sectional view of a vibration conveyor.

FIG. 3 is a side view showing a vibrator, a leaf spring, and a mounting structure thereof.

FIG. 4 is a view showing the structure of the vibrator, wherein FIG. 4A is a top view and FIG. 4B is a rear view.

FIG. 5 is a bottom view showing the structure of the unbalance weight.

FIG. 6 is an enlarged view showing a rotating shaft end of the RV motor.

FIG. 7 is a side view showing the principle of conveyance of the vibrating conveyor.

FIG. 8 is an operation principle diagram of a vibration conveyor having a trough of another structure.

FIG. 9 is a side view of a conventional vibrating conveyor.

FIG. 10 is a cross-sectional view of a vibrator.

FIG. 11 is a sectional view taken along line 11-11 of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying case 2 Vibration mechanism 4 Underframe 6 Fixed support part 7 Vibrator 8 Linking drive means 9 Motor 10 Gear 11 Rotary shaft 13 Weight θ Mounting angle

Claims (4)

[Claims] A transport case on which an object to be transported is mounted; a frame on which the transport case is reciprocally oscillated via a vibration mechanism; a fixed support portion for elastically supporting the frame; A vibrating conveyor comprising a vibrator for imparting vibration to the frame, wherein the vibrator has a pair of motors each having a vibrating weight attached to a rotating shaft, and the weights are line-symmetric with each other. A linking drive unit for rotating the motors in opposite directions so as to be in a positional relationship, and a vibration conveyor mounted on the underframe. 2. The vibration conveyor according to claim 1, wherein the linking drive means comprises a pair of gears having the same number of teeth and being fitted to each of the rotating shafts in a state of meshing with each other. 3. The vibrating conveyor according to claim 1, wherein the vibrating mechanism is configured by a leaf spring spanned over the transport case and the underframe. 4. The vibration conveyor according to claim 3, wherein an angle at which the leaf spring is attached to the underframe is variable.