JPH1133488A - Vibrating screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To screen the object irrespectively of its shape. SOLUTION: A screen main body 14 is formed by setting a lower cylindrical frame 15, an intermediate cylindrical frame 16 and an upper cylindrical frame 17 successively on a vibrator base 13. A screen net 20 is held between the intermediate cylindrical frame 16 and upper cylindrical frame 17 and fixed. The screen net 20 has an opening 20a in the shape corresponding to that of the object. First and second positioning members are movably inserted respectively into the long holes provided in the peripheral part of a coupling 31. A lower unbalance weight 34 is rotatably attached to a rotating shaft 30. The lower balance weight is abutted on the abutment of the first positioning member when the shaft 30 is rotated clockwise and on the abutment 36b of the second positioning member 36 when the shaft is rotated counterclockwise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating sieve apparatus for separating an object supplied on a sieve screen by a shape.

[0002]

For example, when a relatively small resin product such as plastic or rubber is manufactured by injection molding, a so-called multi-piece metal is obtained so that a plurality of products can be obtained in one molding process. A mold may be used. In this case, a plurality of products are taken out of the mold in a connected state. As an example, FIG. 12 shows a state in which a plurality of products 1 (four in FIG. 12) and a portion 2 connecting these products 1 are separated. The connecting portion 2 is a so-called runner from the gate of the product 1 and each product 1 to the gate of the mold, and is an unnecessary portion. In an actual manufacturing process, a product in which a large number of products 1 and the connecting portions 2 are mixed is obtained. By removing the connecting portions 2 from the products, only the product 1 can be finally obtained.

When the product 1 is smaller than the connecting portion 2, the product 1 and the connecting portion 2 can be separated by sieving the product 1 using a sieve screen. However, since the connecting portion 2 has a nail shape and the diameter of the shaft portion 2b is smaller than the diameter of the head portion 2a having four protrusions projecting from the outer peripheral portion and having a large diameter, the connecting portion 2 is meshed with the sieve mesh. The shaft portion 2b of the wire enters and blocks the mesh.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vibrating sieve apparatus capable of sieving regardless of the shape of an object.

[0005]

According to the present invention, a sieve body is vibrated by a vibration imparting means to vibrate a sieve mesh provided in the sieve body so that an object supplied on the sieve mesh is vibrated. A vibrating sieve device that sifts and discharges the residue remaining on the sieve net from an outlet provided in the sieve body, wherein the sieve net can be separated by the shape of the object. As described above, the present invention is characterized in that a large number of holes having a shape corresponding to the shape of the object other than the residue are provided.

Usually, a vibrating sieve device is used for sieving an object according to the size of a particle size. When the sieve body and the sieve mesh vibrate by vibration imparting means, the object on the sieve mesh rotates. And the linear motion in the radial direction are combined. The present invention focuses on the fact that an object on a sieve mesh performs such a movement, and is configured to separate the object according to its shape by a vibrating sieve device.

In this case, a sieve mesh provided with a large number of holes having a shape corresponding to the shape of the object other than the residue is used. Then, the object supplied on the sieve mesh performs the above-described synthetic motion due to the vibration of the sieve mesh. At this time, among the objects having a shape corresponding to the shape of the hole, an object that fits into the hole so as to match the shape of the hole passes through the hole and is sieved. In addition, among the objects having a shape corresponding to the shape of the hole, the object that is stuck in the hole but does not match the shape of the hole may be shifted by the vibration of the sieve body and the sieve net. As a result, the sieve is eventually removed in accordance with the shape of the hole. Then, an object having a shape different from the shape of the hole corresponding to the shape of the hole remains on the screen as a residue.

In this case, the vibration applying means includes a rotating shaft supported by a bearing housing provided in the sieve main body, and a vertical shaft separated from the rotating shaft with the bearing housing interposed therebetween. It is preferable that the upper and lower unbalance weights rotate so that the angle between the upper and lower unbalance weights can be changed. According to such a configuration, the vibration mode generated in the sieve mesh can be changed by changing the angle between the upper and lower unbalance weights. Therefore, the vibration mode can be changed according to the shape and size of the object, and the time during which the object stays on the screen can be changed.

When the angle between the upper and lower unbalance weights is automatically changed by changing the rotation direction of the rotating shaft (claim 3), the screen is changed by changing the rotating direction of the rotating shaft. Two modes can be obtained as the vibration mode generated in the net.

In this case, at least one of the upper and lower unbalance weights is rotatably supported on the rotating shaft, and the first and the second members are integrally mounted on the rotating shaft or a member rotating integrally with the rotating shaft. A second position regulating member, and one of the first and second position regulating members is brought into contact with the rotatable unbalance weight in accordance with the rotation direction of the rotating shaft, and the unbalance weight is moved. When the rotation shaft is configured to rotate integrally with the rotation shaft (claim 4), the angle between the upper and lower unbalance weights can be changed according to the rotation direction of the rotation shaft with a simple configuration.

Further, the first and second position regulating members are
If the position is adjustable (claim 5), the angle between the upper and lower unbalance weights can be freely changed in order to obtain a vibration mode that meets conditions such as the shape and size of the object or screening conditions. Can be.

Further, the angle between the upper and lower unbalance weights is changed by the change in the rotation direction of the rotating shaft so that the object on the sieve screen moves from the center to the outer periphery so as to spiral in one direction. The angle to be applied and the angle to give the discharge vibration mode in which the object on the sieve moves from the center to the outer periphery so as to swirl in the other direction, and when the sieving vibration mode is applied, It is preferable to provide a discharge preventing means for preventing the above object from being discharged from the discharge port (claim 6).

According to such a configuration, in the sieving vibration mode, the objects on the sieve mesh are prevented from being discharged from the discharge port by the discharge prevention means, so that the objects are sufficiently sieved. The object can be retained on the sieve screen.

In this case, the discharge prevention means is provided on the outer peripheral portion of the sieve body corresponding to the discharge port, and projects in a direction opposite to one direction in which the object in the screening vibration mode is swirled and moved. It is also possible to use a discharge port body. In addition, the discharge blocking means is constituted by a guide extending from one side of the circumferential side of the discharge port to the inside of the sieve body, and in the sieving vibration mode, the object follows the guide so as to avoid the discharge port. Alternatively, it may be configured to move.

[0015]

1 to 11 show an embodiment of the present invention.
This will be described with reference to FIG. First, in FIG. 1 showing the overall configuration of the vibrating screen device, a vibrating body base 13 is supported on a cylindrical base 11 via a frame receiving spring 12 so as to be freely vibrated. The main body 14 is fixed. The sieve body 14 is configured by stacking a lower cylindrical frame 15, a middle cylindrical frame 16, and an upper cylindrical frame 17 on a vibrating body base 13. An upper surface of the upper cylindrical frame 17 is covered with a tapered lid 19 in which an input port 18 for inputting an object is formed at the center. The sieve mesh 20 is sandwiched and fixed between the middle cylindrical frame 16 and the upper cylindrical frame 17, so that the sieve body 14 is vertically divided. The sieve net 20 is formed by forming a large number of holes 20a in a metal plate by punching, as described later in detail.

The upper cylindrical frame 17 is provided with a net discharge port 21 for discharging the residue on the sieve screen 20, and the outer peripheral portion of the upper cylindrical frame 17 corresponds to the net discharge port 21. Is provided with a discharge port body 22. This outlet body 22 is provided in FIG.
As shown in the figure, the upper cylindrical frame 17 is inclined in one direction, in this case, in the direction of arrow A. In addition, a guide 41 as discharge prevention means extending toward the inside of the sieve body 14 is provided at one of the opening edges of the discharge outlet 21 on the net, which faces in the circumferential direction, in this case, the left edge in FIG. Is provided. The lower surface of the guide 41 is close to the screen 20 and
It is inclined in the same direction as the discharge port body 22.

An outer peripheral portion of the lower cylindrical frame 15 is a mesh for discharging an object which has passed through the sieve mesh 20 and is received by the conical product receiver 23 provided on the bottom surface of the lower cylindrical frame 15 to the outside. A discharge port (not shown) is provided, and a discharge port body 24 is provided in the discharge port.

On the other hand, a motor 25
Is fixed, and a V-pulley 26 is connected to a rotation shaft 25 a of the motor 25. In addition, V
A pulley 27 is rotatably supported, and a V belt 28 is stretched between the V pulley 27 and the V pulley 26.

A rotary shaft 30 is connected to a drive shaft 27a of the V pulley 27 via a drive spring 29. A coupling 31 is integrally provided at a lower end of the rotating shaft 30, and an upper end of the drive spring 29 is fixed to the coupling 31. The rotating shaft 30 is rotatably supported via a bearing (not shown) on a vibrating body housing 32 as a bearing housing fixed to the center of the lower surface of the vibrating body base 13.

An upper unbalance weight 3 is provided at the upper end of the rotating shaft 30 protruding above the vibrating body housing 32.
3 is fixed. Thereby, the upper unbalance weight 33 rotates integrally with the rotating shaft 30. On the other hand, a lower unbalance weight 34 is rotatably mounted at the lower end of the rotating shaft 30 projecting below the vibrating body housing 32 and above the coupling 31. The rotating shaft 30 and the upper and lower unbalance weights 33 and 34 constitute vibration applying means.

As shown in FIG. 2, the coupling 31 is provided with first and second position regulating members 35 and 36. These position restricting members 35 and 36 serve to lower unbalance weight 34 and upper unbalance weight 33.
Are rotated integrally with the rotating shaft 30 with a predetermined angle between the rotating shaft 30 and the rotating shaft 30. The angle between the upper and lower unbalance weights 33, 34 means an angle formed by a straight line connecting the center of gravity of each of the unbalance weights 33, 34 and the center of rotation.

More specifically, position regulating members 35 and 36 are provided so as to be movable along long holes 37 and 38 provided in the peripheral portion of the coupling 31. The long holes 37, 38
Has an arc shape, and is symmetrically disposed with respect to a straight line B connecting the center of gravity of the upper unbalance weight 33 and the center of the rotating shaft 30.

As shown in FIG. 3, the position restricting members 35 and 36 (in FIG. 3, the second position restricting member 36
Only shown. ), Mounting plates 35a, 36a located on the back surface of the coupling 31, and rod-shaped contact portions 35b, 36b projecting from the upper surface of one end thereof. The holes of the mounting plates 35a, 36a and the slots 37, 3
8, the bolts 39a are inserted into the couplings 31 and tightened by the nuts 39b, so that the position regulating members 35 and 36
Fixed to Further, the position regulating members 35 and 36 can be moved by loosening the nut 39b.

When the rotating shaft 30 rotates in the direction of arrow A by driving the motor 25, the lower unbalance weight 34 contacts the contact portion 35b of the first position regulating member 35 and rotates integrally with the rotating shaft 30. . On the other hand, when the rotation shaft 30 rotates in the direction opposite to the arrow A by the drive of the motor 25, the lower unbalance weight 34 contacts the contact portion 36 b of the second position regulating member 36 and rotates integrally with the rotation shaft 30. .
In this embodiment, the rotation shaft 30 rotates in the direction of arrow A when the motor 25 rotates in the normal direction, and rotates in the direction opposite arrow A when the motor 25 rotates in the reverse direction.

Therefore, when changing the angle between the upper and lower unbalance weights 33 and 34 when the rotating shaft 30 rotates in the direction of arrow A, the first position regulating member 35 is inserted into the elongated hole 37.
Along with the scale 40 at a desired angle. On the other hand, when changing the angle between the upper and lower unbalance weights 33 and 34 when the rotating shaft 30 rotates in the direction indicated by the arrow A, the second position regulating member 36 is moved along the elongated hole 38 to obtain the desired position. Is fixed to the scale 40 at the angle of.

Here, the vibration of the sieve screen 20 is caused by the rotation of the rotating shaft 30 by the motor 25 and the rotation of the upper and lower unbalance weights 33 and 34. Balance weight 33,
It is known that various vibration modes can be obtained depending on the angle between 34.

FIG. 5 shows the upper and lower unbalance weights 3
4 shows the relationship between the angle between the upper and lower unbalance weights 33 and 34 when viewed from the upper unbalance weight 33 side.
The lower part shows the moving state of the object on the sieve net 20 corresponding to the positional relation between the two unbalance weights 33 and 34 in the upper part.

When the lower unbalance weight 34 is positioned at an angle of 90 degrees to the left of the upper unbalance weight 33 as shown in FIG. The upper object moves so as to spiral toward the center in the direction of arrow A. As this angle becomes smaller, the object on the sieve screen 20 tends to swirl toward the center, and eventually tends to move toward the outer periphery. When the rotating shaft 30 rotates in the direction of arrow A, the upper and lower unbalance weights 3
When the angle between 3, 34 is approximately 60 degrees, and when the rotation shaft 30 rotates in the direction opposite to the arrow A, when the angle is approximately 45 degrees, the object on the screen 20 is as shown in FIG. As shown in the figure, it moves so as to spiral in the direction of arrow A toward the outer peripheral direction.

Further, both upper and lower unbalance weights 3
When the positions of 3, 34 coincide, the object on the sieve net 20 moves linearly toward the outer peripheral direction, as shown in FIG. 5C, regardless of the rotation direction of the rotating shaft 30. .

On the other hand, when the lower unbalance weight 34 is located on the right side with respect to the upper unbalance weight 33, the raw material on the sieve screen 20 is displaced in the direction indicated by the arrow A opposite to the above-described position on the left side. The rotation and the linear movement in the radial direction are combined. For example, as shown in FIG. 5D, when the rotating shaft 30 rotates in the direction of arrow A, when the angle between the upper and lower unbalance weights 33 and 34 is approximately 60 degrees, the rotating shaft 30 moves in the direction opposite to arrow A. When the angle is approximately 45 degrees, the object on the screen 20 moves so as to spiral toward the outer periphery in the direction of the arrow A.

Although not shown, the object on the screen 20 tends to move toward the center as the angle increases. Upper and lower unbalance weight 3
When the angle between the upper and lower unbalance weights 34 and 34 is 90 degrees, the material on the screen 20 is not affected by the rotation direction of the rotating shaft 30 as in the case where the lower unbalance weight 34 is located on the left side of the upper unbalance weight 33. It moves so as to spiral toward the center in the direction of the arrow A.

Accordingly, in this embodiment, since the guide 41 and the discharge port body 22 are inclined in the direction of arrow A, the upper and lower unbalance weights 3 for obtaining the discharge vibration mode are obtained.
The angle between 3 and 34 is the angle shown in FIG. 5B or an angle smaller than this angle (however, larger than 0 °). Further, the angle between the two unbalance weights 33 and 34 at which the sieving vibration mode is obtained is the angle shown in FIG. 5D or an angle larger than this angle (but less than 90 °).

Next, the operation of the above configuration will be described. Here, a case will be described as an example where a resin product such as plastic or rubber manufactured by injection molding is separated from a connecting portion taken out of a mold at the same time as the product. Therefore, the resin product and the connection portion are the objects. First, the relationship between the plastic product and the connection part will be briefly described.

When a resin product is manufactured by injection molding,
In some cases, a mold that can obtain a large number of products in a single process is used. Therefore, for example, as shown in FIGS. 10 and 11,
The plurality of products P are taken out of the mold while being connected to each other.

In this case, the molded product taken out of the mold is vibrated at a low temperature to separate each product P. As a result, together with the product P, the gate of each product P is removed from the gate of the mold. , And a connection portion Q including a frame portion and the like. Such a connecting part Q
Can vary depending on the shape of the mold used, as well as various shapes depending on the different parts to be cut off.

For example, FIG. 8 shows a cylindrical product P obtained corresponding to the molded product shown in FIG. 10 and a connecting portion Q corresponding to a runner. FIG. 9 shows a cylindrical product P obtained corresponding to the molded product shown in FIG. 11, and a connecting portion Q corresponding to a runner and a frame portion.

The product P and the connecting portion Q are obtained in a large amount in a single process. Then, the object composed of a large amount of the product P and the connecting portion Q is separated by sieving with the vibrating sieve device having the above configuration.

When sieving the object consisting of the product P and the connecting portion Q, first, the shape of the hole 20a of the sieve net 20 according to the object is selected. The vibrating sieve device having the above-described configuration has an irregular shape in which a columnar, prismatic, spherical, or other lump, and a radial or crank-shaped protrusion (protrusion) is partially provided on the main part of the shaft. And
It is configured such that an object having a combination of a protrusion having a size larger than that of the lump and an object having an irregular shape is sieved.

Therefore, in the case of the object shown in FIG. 8, the connection portion Q is sieved, and the product P is left as a residue.
Remains on The product P has a length of about 35 mm,
The diameter is about 15 mm. The connecting portion Q has a nail shape, a head diameter of about 12 mm, a width of four protrusions projecting from the head, 4 mm, and a total length of about 60 mm. From this dimensional relationship, the shape of the hole 20a of the sieve screen 20 is
As shown in FIG. 6, it has a substantially cross shape corresponding to the connecting portion Q. The hole 20a has a length of about 25 mm and a width of about 9 mm in each of the intersecting slots.

In the case of the object shown in FIG.
Has a length of about 10 mm and a diameter of about 16 mm. The connecting portion Q is formed of a nail, a T, or an H. The nail-shaped one has a head diameter of about 10 mm, two protrusions projecting from the head have a length of 2 mm, and an overall length of about 30 mm. In the T-shape, the length of the horizontal axis is 20 to 90 mm, and the length of the vertical axis is 50 to 80 mm. In the case of an H-shape, the length of the horizontal axis is 25 mm and the length of the vertical axis is 160 mm.
mm. From such a dimensional relationship, the holes 20 of the sieve screen 20
The shape of a is a connecting portion Q, in this case, a nail-shaped connecting portion Q
Is obtained. As shown in FIG. 7, the hole 20a has a length of about 16 mm and a width of about 8.5 mm. The oval hole 20a does not correspond to the shape of the connecting portion Q having a T-shape or H-shape. However, since the connecting portion Q is a thin plate, the oval hole 20a has a thin plate shape.
Can pass through.

After the selection of the screen 20 is completed, the screen 20 is set at a predetermined position. Note that the subsequent steps are almost the same for the objects shown in FIGS. 8 and 9, and therefore, the description will be made with reference to the object shown in FIG.

First, the first and second position regulating members 35,
36 is fixed at a predetermined position. Specifically, the motor 25
During forward rotation, the upper and lower unbalance weights 33, 34
The first position regulating member 3 so that the angle between them is approximately 40 degrees.
5 is fixed, and the second position regulating member 46 is fixed so that the angle between the upper and lower unbalance weights 33 and 34 becomes approximately 60 degrees when the motor 25 rotates in the reverse direction. And
The motor 25 is set so as to rotate in the reverse direction and is energized, and an object is thrown from the inlet 28 into the sieve body 14 of the vibrating sieve device in a vibrating state.

At this time, the coupling 31 is rotated in the direction indicated by the arrow A by the motor 25, so that the lower unbalance weight 34 is brought into contact with the contact portion 46a of the second position regulating member 46 as shown by the solid line in FIG. Be abutted. As a result,
The angle between the upper and lower unbalance weights 33 and 34 is 6
While holding at 0 degrees, both unbalance weights 33, 3
4 is driven to rotate in the direction indicated by the arrow A. Therefore, the angle between the upper and lower unbalance weights 33 and 34 becomes larger than 45 degrees shown in FIG. 5D, and the sieving vibration mode is provided. As a result, the object on the sieve mesh 30 moves in a counterclockwise direction (counter-arrow A direction) toward the center. At this time, the object hits the guide 41 when passing through the vicinity of the net outlet 21, and is prevented from being discharged from the net outlet 21.

The object B on the sieve net 20 causes the connection portion B to enter the hole 20a due to the vibration of the sieve net 20. At this time, if the shape of the head of the connecting portion Q (the portion where the four short protrusions protrude) matches the shape of the hole 20a, the connecting portion Q passes through the hole 20a and is sieved from the sieve net 20 as it is. When the shape of the head of the connecting portion Q does not match the shape of the hole 20a, the connecting portion Q is displaced and moved by the vibration of the sieve mesh 20 while the shape of the head matches the shape of the hole 20a. Pass through.

When the sieving operation has sufficiently proceeded, the motor 25 is stopped and switched so that the motor 25 rotates forward. At this time, since the coupling 31 is rotated in the direction of arrow A,
The lower unbalance weight 34 contacts the contact portion 45a of the first position regulating member 45 as shown by a two-dot chain line in FIG.
It is rotationally driven in the direction of arrow A together with the upper unbalance weight 33 as a degree.

Then, the upper and lower unbalance weights 3
The angle between 3 and 34 becomes smaller than the angle in FIG. 5B, and the discharge vibration mode is provided. As a result, the holes 2 of the sieve screen 20
The object P, ie, the product P remaining on the screen 20 without passing through the mesh 0a, swirls clockwise (in the direction of arrow A) toward the outer circumference, and is discharged through the discharge port 21 on the screen. Body 22
Is discharged from At this time, the discharge port body 22 is
The product P is provided so as to incline in the direction of arrow A, that is, to coincide with the spiral movement direction of the product P, so that the product P smoothly enters the discharge port body 22 and is discharged. The product P that does not enter the on-net outlet 21 even after passing near the on-net outlet 21 hits the guide 41 and returns to the on-net outlet 21 side, and is discharged from the on-net outlet 21. On the other hand, sieve net 2
The connection portion Q dropped to the product receiver 23 through the zero hole 20a is discharged from the discharge port body 24 through the net discharge port regardless of the rotation direction of the motor 25.

According to the present embodiment, the connection portion Q is eliminated from the size relationship between the product P included in the object and the connection portion Q, and the hole 20a having a shape corresponding to the shape is provided. By appropriately selecting the sieve net 20,
The shape of the object can be separated using a vibrating screen device. Therefore, the working time can be reduced as compared with the conventional case where the product and the connecting portion Q are manually separated.

In this embodiment, the angle between the upper and lower unbalance weights 33 and 34 can be changed.
Therefore, it is possible to change the vibration mode imparted by the vibration imparting means according to the size or shape of the object, or change the time the object stays on the sieve net 20.

The angle between the upper and lower unbalance weights 33 and 34 is changed only by changing the rotation direction of the motor 25. Therefore, two types of vibration modes can be obtained only by changing the rotation direction of the rotating shaft 30 (motor 25). Therefore, it is not necessary to change the position of the position regulating members 35 and 36 every time to change the vibration mode.

In addition, the change in the angle between the upper and lower unbalance weights 33 and 34 due to the change in the rotation direction is caused by the first and second position regulating members 3 provided on the coupling 31.
This can be realized with a relatively simple configuration in which the lower unbalance weight 34 is brought into contact with one of the 5, 36 corresponding to the rotation direction of the motor 25.

Further, the first and second position regulating members 3
5, 36 were provided so that position adjustment was possible. Therefore, the sieve body 1
The angle between the upper and lower unbalance weights 33 and 34 can be freely changed in accordance with conditions such as the shape and specific gravity of an object to be put into the chamber 4, and a desired vibration mode can be obtained.

Then, the vibrating screen device is vibrated so that the angle between the upper and lower unbalance weights 33 and 34 becomes an angle at which the sieving vibration mode and the discharge vibration mode are given by the change in the rotation direction of the rotating shaft 30. Before starting the raw material sieving operation, the first and second position regulating members 35,
36 positions were set. Therefore, the vibration mode can be changed only by stopping the motor 25 and changing the rotation direction without interrupting the work for a long time, so that the workability is good.

Further, the discharge port body 22 is inclined in the direction of arrow A, and a guide 41 is provided. Then, during the sieving operation to which the sieving vibration mode is applied, the object moves so as to swirl in the direction indicated by the arrow A, so that the object hits the guide 41 and is prevented from being discharged from the net outlet 21. Therefore, the object can be kept on the sieve mesh until the object is sufficiently sieved. During the discharge operation to which the discharge vibration mode is given, the product P remaining on the screen 20 moves so as to swirl in the direction of arrow A.
The product P near the net outlet 21 smoothly enters along the inner surface of the outlet 22 inclined in the direction of arrow A and is discharged. Further, of the products P, the products P that pass without entering the on-net outlet 21 hit the guide 41 and are discharged on the on-net outlet 2.
It moves to the side 1 and enters the outlet 21 on the net. Therefore,
The object can be sieved and discharged efficiently, and the workability is further improved.

In this embodiment, a guide 41 is provided so that the object can be discharged from the screen outlet 21 in the screening vibration mode.
Although the guide 41 is configured so as to be prevented from being discharged from the guide, the guide 41 may be omitted. In this case, the object entering the discharge outlet 21 on the net hits the inner surface of the discharge opening body 22 inclined in the direction of arrow A and returns to the inside of the sieve body 14,
The discharge port body 22 functions as discharge prevention means.

Further, the guide 4 is used as a discharge preventing means.
1 alone works satisfactorily. Therefore, when the guide 41 is provided in the net outlet 21 as in the above embodiment, the outlet body 2
2 may not be provided so as to be inclined with respect to the upper cylindrical frame 17.

The present invention is not limited to the embodiment described above and shown in the drawings, and the following changes or extensions are possible. The first and second position regulating members may be provided on the rotating shaft 30. The inclination of the discharge port body 22 is not limited to that shown in FIG. 4, and the point is that the discharge port body 22 may be inclined more in the direction of the arrow A than in the radial direction with respect to the upper cylindrical frame 27.

The upper unbalance weight 33 is connected to the rotating shaft 3
0 and the lower unbalance weight 34
0, the upper unbalance weight 33 may be rotatably supported on the rotating shaft 30 and the lower unbalance weight 34 may be fixed to the rotating shaft 30. The unbalance weights 33 and 34 may be rotatably supported on the rotating shaft 30. As the discharge preventing means, a lid may be provided which closes the discharge port during the sieving operation and opens the discharge port during the discharge operation.

[0058]

As is apparent from the above description, the vibrating sieve device of the present invention vibrates the sieve body provided by the vibrating means by vibrating the sieve body provided by the vibrating means. The object supplied above is sieved, and the residue remaining on the sieve mesh is discharged from an outlet provided in the sieve body.The sieve mesh is separated by the shape of the object. Since a large number of holes having a shape corresponding to the shape of the object other than the residue among the objects are provided as many as possible, the object has a complicated shape, for example, having a projection. Even so, some of the objects can be sieved through the holes of the sieve mesh to separate them into residues and objects from which the residues have been removed.

In this case, as in the vibrating sieve device of claim 2, the vibration applying means includes a rotating shaft supported by a bearing housing provided on the sieve main body, and a vertical direction with the bearing housing interposed between the rotating shaft. And the upper and lower unbalance weights, which are provided apart from each other and rotate integrally with the rotating shaft,
When the angle between the upper and lower unbalance weights is configured to be changeable, it is possible to change the vibration mode according to the shape or size of the object or to change the time during which the object stays on the sieve mesh. it can.

More specifically, at least one of the upper and lower unbalance weights is designed so that the angle between the upper and lower unbalance weights is automatically changed by a change in the rotation direction of the rotating shaft. Is rotatably supported on a rotating shaft, and first and second position regulating members are provided on the rotating shaft or a member that rotates integrally with the rotating shaft, and the first and second position regulating members are When one of the rotation shafts is configured to abut on the rotatable unbalance weight to rotate the unbalance weight integrally with the rotation shaft (claim 4), By changing the direction of rotation, two modes can be obtained as vibration modes generated in the sieve net, and the configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view showing a right half of a vibrating sieve apparatus according to an embodiment of the present invention in cross section.

FIG. 2 is a plan view of a lower unbalance weight and a coupling.

FIG. 3 is a side view showing a part of a lower unbalance weight and a periphery of a coupling, partially broken away;

FIG. 4 is a schematic configuration diagram showing a positional relationship between a discharge port body and an upper cylindrical frame.

FIG. 5 is a diagram schematically showing a relationship between an angle between upper and lower unbalance weights and a moving direction of a substance on a sieve screen.

FIG. 6 is a view showing an example of the shape of holes in a sieve net (part 1).

FIG. 7 is a view showing an example of the shape of holes in a sieve net (part 2).

FIG. 8 is a view showing an example of an object (part 1).

FIG. 9 is a view showing an example of an object (part 2).

FIG. 10 is a view showing an example of a plastic product taken out of a mold (part 1).

FIG. 11 is a view showing a plastic product taken out of a mold (part 2).

FIG. 12 shows a conventional example, showing a product and an unnecessary part.

[Explanation of symbols]

14 is a sieve body, 20 is a sieve mesh, 21 is a discharge port (discharge port) on the net, 22 is a discharge port body (discharge prevention means), 30 is a rotating shaft, 31 is a coupling (a member that rotates integrally with the rotating shaft). ), 32 are a vibrating body housing (bearing housing), 3
Reference numeral 3 denotes an upper unbalance weight, 34 denotes a lower unbalance weight, 35 denotes a first position restricting member, 36 denotes a second position restricting member, and 41 denotes a guide (discharge preventing means).

Claims (8)

[Claims] 1. A vibrating means for vibrating a sieve main body by a vibration applying means vibrates a sieve mesh provided in the sieve main body to sift an object supplied on the sieve net, and to sift the object on the sieve net. In a vibrating sieve device configured to discharge the residue remaining in the sieve main body from a discharge port provided in the sieve body, the sieve net is configured such that the residual portion of the target object is separated by the shape of the target object. A vibrating sieve device comprising a large number of holes each having a shape corresponding to a shape other than an object. 2. A vibration imparting means, comprising: a rotating shaft supported by a bearing housing provided on a sieve body; and a vertical shaft separated from the rotating shaft with the bearing housing interposed therebetween. The vibrating sieve device according to claim 1, comprising an upper and lower unbalanced weight, wherein an angle between the upper and lower unbalanced weights is changeable. 3. The vibrating sieve device according to claim 2, wherein the angle between the upper and lower unbalance weights is automatically changed by a change in the rotation direction of the rotating shaft. 4. An at least one of the upper and lower unbalance weights is rotatably supported on a rotating shaft, and first and second members are provided on the rotating shaft or a member rotating integrally with the rotating shaft. The first and second position regulating members are arranged such that one of the first and second position regulating members according to the rotation direction of the rotating shaft abuts on the rotatable unbalanced weight, and the unbalanced weight is moved. The vibrating sieve device according to claim 1, wherein the vibrating sieve device is rotated integrally with the rotating shaft. 5. The vibrating screen device according to claim 4, wherein the first and second position regulating members are provided so as to be position-adjustable. 6. The sieving vibration mode in which the angle between the upper and lower unbalance weights is moved from the center to the outer periphery so that the object on the sieve meshes in one direction by changing the rotation direction of the rotation shaft. And the angle at which the discharge vibration mode in which the object on the sieve mesh moves from the center to the outer periphery so as to swirl in the other direction changes to the angle at which the sieving vibration mode is applied. 2. The vibrating sieve device according to claim 1, further comprising a discharge prevention unit for preventing an object from being discharged from a discharge port. 7. A discharge prevention means is provided on an outer peripheral portion of the sieve body corresponding to the discharge port, and discharge discharge means which is inclined and protrudes in the other direction opposite to one direction in which the object in the sieving vibration mode is swirled. 7. An outlet body.
The vibrating sieve device as described in the above. 8. The discharge prevention means comprises a guide extending from one side of the circumferential side of the discharge port to the inside of the sieve body, and the guide is arranged so that an object avoids the discharge port in a sieving vibration mode. The vibrating sieve device according to claim 6, wherein the vibrating sieve device is configured to move along.