JP7328677B2 - Diffusion device for granular materials - Google Patents

Description

The present invention relates to a granule spreading device for uniformly spreading granules discharged and dropped from a discharge chute of a constant feeder that conveys granules by a fixed amount and discharges them from the discharge chute.

Conventionally, as a technology to spread powder and granules in a uniform band on an object placed on a conveyor moving in the horizontal direction, a fixed quantity of granules is discharged from a discharge chute by a fixed quantity feeder. There is a method in which the granules are received by a trough, tray, or the like of a vibrating feeder installed below, and further dropped onto a conveyor little by little by the vibration of the vibrating feeder.

However, in this method, the granular material flows down from the discharge chute like a waterfall and piles up on the trough in a conical shape. When dispersed in a band, the density in the center becomes extremely high.

Therefore, the applicant of the present application has disclosed a density diffusion device shown in Patent Document 1. The density diffusion device of Patent Document 1 is arranged between a granular material receiver disposed below a discharge chute of a granular material feeder that conveys a fixed amount, and the discharge chute to dispose the discharged and dropped powder particles. It has an umbrella-shaped member against which the body rests, and a fan-shaped plate formed of a corrugated plate under the front side of the umbrella-shaped member.

According to the density diffusion device of Patent Document 1, the granular material discharged from the discharge chute falls along the arc of the upper surface of the umbrella-shaped member so as to be scattered onto the fan-shaped plate member arranged below, It spreads over the trough along the grooves and ridges of the corrugated plate forming the fan-shaped plate, spreading over the entire width of the trough.

JP 2015-30595 A

However, even with this device, depending on the physical properties of the powder to be handled (for example, specific gravity, particles, differences in particle size, adhesion and cohesion due to moisture and static electricity, etc.) There is an inconvenience that the body does not flow and accumulates, and it is not possible to diffuse sufficiently.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and an object of the present invention is to provide a diffusion device capable of diffusing even a granular material having physical properties that make it difficult to diffuse.

The present invention has the following features in order to achieve the above objects.

[1] A device disposed between a discharge chute of a powder feeder that conveys a fixed amount and a receiver of a vibrating feeder disposed below the discharge chute, for feeding the powder discharged from the discharge chute. A diffusing device for granules to be diffused into the receptacle,
a power source that is attached to the main body and rotates the rotating shaft;
a crank fixed to the rotating shaft;
a connecting member whose base end side is rotatably fixed to the crank via a hinge pin;
a diffusing section provided on the tip side of the connecting member and onto which the granular material discharged from the discharge chute drops onto the upper surface;
The main body and the connecting member are connected by a support mechanism that supports the distal end of the connecting member so as to translate and swing along the horizontal direction.

[2] The connecting member is a rod-shaped or plate-shaped elongated member, and has an elongated hole formed along its longitudinal direction with a length of at least twice the distance between the rotation shaft and the hinge pin. ,
the body portion includes a sliding pin extending along a vertical direction toward the connecting member;
The diffusion device according to [1], wherein the support mechanism is configured by inserting the slide pin into the elongated hole.

[3] The diffusion device according to [1] or [2], wherein the diffusion portion is provided with a plurality of gutter portions extending along the translational direction of the connecting member.

[4] Any one of [1] to [3], wherein the crank is provided with crank holes for supporting the hinge pin at a plurality of positions with different distances from the rotation axis. Diffusion device according to paragraph

According to the diffusing device of the present invention, the diffusing portion onto which the granular material discharged from the discharge chute falls can be translated and oscillated. It can be diffused into the receptacle of the feeder.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the structure of the powder diffusion system which concerns on embodiment of this invention. It is a side view which shows the structure of the spreading|diffusion apparatus which concerns on embodiment of this invention. It is a top view showing composition of a diffusion device concerning an embodiment of the invention. FIG. 4 is a cross-sectional view taken along line IV-IV of the diffusion plate of the diffusion device according to the embodiment of the present invention; FIG. 4 is an explanatory diagram for explaining the operation of the diffusion device according to the embodiment of the present invention;

As shown in FIG. 1 , the diffusion device 100 according to the present embodiment includes a quantitative feeder 200 for granular material (corresponding to the “granular material feeder” of the present invention) and a By being arranged between the vibrating feeder 300, the powder diffusion system 1 is configured as a whole.

In this embodiment, one large workbench and one small workbench having legs supporting the top plate are prepared at the four corners of the workbench, and the diffusion device 100 is placed on the top plate of the large (tall) workbench. By placing the diffusion device 100 above the vibrating feeder 300, and placing the diffusion device 100 on the top plate of a small (short) workbench, it can be placed between the quantitative feeder 200 and the vibrating feeder 300 for powder or granular material. is installed in

The diffusion device 100 is fixed to the top plate of a small (short) workbench via a tilted triangular prism-shaped sloping table so that the tip side is inclined downward.

The granular material quantitative feeder 200 is, for example, a granular material quantitative feeder driven by a motor 201 with a speed reducer as disclosed in Japanese Unexamined Patent Application Publication No. 2012-41106. The granulated material is quantitatively weighed by the measuring groove of a gear-shaped disk (not shown) rotated by a motor 201 with a speed reducer, and discharged downward from a discharge chute 203 provided on the back side. .

This quantitative feeder 200 is installed on a top board via an electronic balance (not shown). As a result, the entire fixed-rate feeder loaded with powder is placed on an electronic balance, the amount of powder discharged is detected from the decrease in weight over a certain period of time, and the supply amount (discharge amount) is adjusted so that it matches the set value. Quantitative supply can be achieved by automatically controlling the

Directly below the lower opening of the discharge chute 203, a diffusion plate 60 (corresponding to the "diffusion section" of the present invention) of the diffusion device 100, which will be described later, is slanted downward with its leading end side (lower left in FIG. 1). tilted toward).

A vibration feeder 300 supported by a coil spring is mounted and fixed below the diffuser plate 60. The vibration applied to the upper surface of the vibration feeder 300 moves the powder forward (to the right in FIG. 1). ) (corresponding to the "receptor" of the present invention).

In this embodiment, the tip side of the trough 301 is inclined downward (in FIG. 1, it is inclined downward to the right). Since the tip of the diffuser plate 60 is inclined downward to the left and the tip of the trough 301 is alternately inclined downward to the right, the diffuser plate 60 and the trough 301 are arranged to form a substantially "y" shape. ing.

Next, the configuration of the diffusion device 100 according to this embodiment will be described with reference to FIGS. 2 to 4. FIG.

As shown in FIGS. 2 and 3, the diffusion device 100 includes a main body 10, a motor 20 (corresponding to the "power source" of the present invention), a crank 30, a connecting link 40 (corresponding to the "connecting member" of the present invention). ), sliding pins 50 and diffusion plate 60 .

The body portion 10 has a top plate 13 fixed to four support shafts 12 erected from the four corners of a square base portion 11 in plan view. The top plate 13 has an extending portion 14 extending outward (to the left in FIG. 2) from the base portion 11 in plan view.

The top plate 13 has a through-hole (not shown) penetrating from the front and back near the center surrounded by the four support shafts 12 . A cylindrical sliding pin 50 is erected upward at the center of the tip edge of the extending portion 14 .

The speed of the motor 20 can be adjusted by providing an inverter (not shown). The motor 20 is screwed to the back side of the top plate 13 with the output shaft 21 (corresponding to the "rotating shaft" of the present invention) to be rotated inserted into the through hole from below.

A crank 30 is fixed to the output shaft 21 so as to rotate together with the output shaft 21 . The crank 30 is a plate-like member bent in an L-shape, and has a fixing portion 31 fixed to the output shaft 21 and a mounting portion 32 extending horizontally from the upper edge of the fixing portion 31 .

Mounting holes 33 (corresponding to "crank holes" of the present invention) are formed in the four corners of the mounting portion 32, and long mounting holes 34 (" corresponding to "crank hole".) is formed.

The connecting link 40 is an elongated plate-like member. A through hole (not shown) is provided at the proximal end of the connecting link, and is fixed to the mounting hole 33 of the mounting portion 32 via a hinge pin 35 so as to be rotatable and detachable.

The connecting link 40 has a sliding groove 41 (corresponding to the "long hole" of the present invention) penetrating the front and back along the longitudinal direction in the central portion, and a diffusion plate 60 on the upper surface of the tip portion. is fixed.

The width of the sliding groove 41 in the lateral direction is larger than the diameter of the sliding pin 50, and the length in the longitudinal direction is more than twice the distance of the mounting hole 33 on the distal end side, which is the farthest from the output shaft 21. Large.

The sliding pin 50 is a bolt and has a lower positioning nut 51 and an upper retainer nut 52 . The outer diameters of the lower positioning nut 51 and the upper retainer nut 52 are larger than the width of the sliding groove 41 .

The connecting link 40 is relatively slidable and rotatable by inserting the sliding pin 50 from which the locking nut 52 has been removed into the sliding groove 41 and screwing the locking nut 52 onto the tip of the sliding pin 50 . It can be attached detachably and detachably. The slide groove 41 and the slide pin 50 described above correspond to the support mechanism of the present invention.

The diffuser plate 60 has a rectangular shape in a plan view as shown in FIG. 3, and is curved in a wave shape as shown in FIG.

Next, the operation of the diffusion device 100 according to this embodiment will be described using FIG. Note that the output shaft 21 of the motor 20 rotates counterclockwise in FIG. 5, and the crank 30 is simply illustrated as a rod-shaped member in FIG.

First, in the position shown in FIG. 5A, the crank 30 and the connecting link 40 are oriented toward 12 o'clock. As a result, the slide pin 50 is arranged on the base end side of the slide groove 41 of the connecting link 40, and the diffuser plate 60 is pushed to the front position (upper position in FIG. 5) farthest from the output shaft 21. As shown in FIG.

Next, as shown in FIG. 5B, when the output shaft 21 rotates to the left by 90°, the crank 30 is oriented in the 9 o'clock direction. As a result, the connecting link 40 is pulled rearward, so that the sliding pin 50 relatively moves to the central portion side of the sliding groove 41 . At the same time, the proximal end of the connecting link 40 is pulled leftward, so the diffuser plate 60 attached to the distal end of the connecting link 40 is turned rightward about the slide pin 50 .

Next, as shown in FIG. 5C, when the output shaft 21 rotates further 90 degrees to the left, the crank 30 is oriented toward 6 o'clock. At this time, the slide pin 50 relatively moves to the tip of the slide groove 41, whereby the connecting link 40 and the diffuser plate 60 are retracted to the rearmost.

Next, as shown in 5D, the output shaft 21 rotates a further 90 degrees to the left, causing the crank 30 to point toward the 3 o'clock direction. As a result, the connecting link 40 is pushed forward, so that the sliding pin 50 relatively moves to the central portion side of the sliding groove 41 . At the same time, the proximal end of the connecting link 40 is pushed rightward, so that the diffuser plate 60 attached to the distal end of the connecting link 40 is turned leftward about the sliding pin 50 .

Next, when the output shaft 21 rotates a further 90 degrees to the left, the crank 30 is oriented toward 12 o'clock, as shown in FIG. 5A. At this time, the slide pin 50 relatively moves to the base end side of the slide groove 41, thereby pushing the connecting link 40 and the diffusion plate 60 forward most.

As a result, the diffuser plate 60 is horizontally translated and oscillated. Specifically, it is displaced in a figure 8 shape in plan view. However, since the rotation at the lower side of the figure 8 is small, the diffuser plate 60 looks like a reverse teardrop, or, more closely, rotates clockwise.

Finally, the effects of the powder diffusion system 1 will be described.

A fixed amount of the granular materials put into the hopper 202 of the quantitative feeder 200 is weighed, discharged from the discharge chute 203 , and dropped onto the upper surface of the diffusion plate 60 .

Granules that have fallen onto the diffuser plate 60 run along the ridge 62 and accumulate in the gutter 61 .
At this time, in the diffusion device 100 of the present embodiment, the diffusion plate 60 translates and rotates. It can diffuse in the width direction.

The granular material spread in the width direction on the trough 301 is sent downward by the vibration applied from the vibrating feeder 300 and sequentially falls downward from the leading edge of the trough 301 .

Therefore, by preparing a conveyor below the vibrating feeder 300, it is possible to spread the granular material in a uniform strip.

As described above, according to the diffusing device 100 of the present embodiment, it is possible to uniformly diffuse even a powder or granular material having physical properties that make it difficult to diffuse.

In addition, the difficulty of diffusion differs depending on the granular material. Therefore, in order to spread the powder across the width of the trough 301, it is necessary to adjust the granular material.

In contrast, according to the diffusion device 100 of the present embodiment, it is possible to adjust the spread width by adjusting the rotation speed of the motor with the inverter.

Also, the swing width of the diffuser plate 60 of the present embodiment (horizontal movement amount of the diffuser plate 60 in FIGS. 5B and 5D) is determined by the distance between the output shaft 21 and the hinge pin 35 .

On the other hand, in the crank 30 of the present embodiment, mounting holes 33 for the hinge pin 35 are formed on the base end side and the tip end side of the mounting portion 32, respectively. The swing width of the diffusion plate 60 can be adjusted.

Furthermore, since the crank 30 of the present embodiment is formed with an elongate mounting hole 34 extending from the center of the base end side of the mounting portion 32 toward the center of the tip side thereof, the mounting position of the hinge pin 35 can be finely adjusted. , the amplitude of the diffusion plate 60 can be finely adjusted.
[Modification]
It should be noted that the present invention is not limited to the above embodiments, and various design changes can be made.

For example, in the present embodiment, the diffusing plate 60 curved in a wave shape has been described as an example, but the diffusing plate of the present invention is not limited to this. That is, the diffusing plate may be a simple plate-like member, or may be a tray-like member having a peripheral wall erected around the peripheral edge of the plate-like member excluding the tip edge. Further, the diffusion plate may be a plate-like member having a plurality of open-ended grooves adjacent to each other. Furthermore, the diffusion plate may be a sieve formed of a mesh member.

In this embodiment, the swing width of the diffusion plate 60 is adjusted by the crank 30 having a plurality of holes, but the present invention is not limited to this. A plurality of through holes may be provided to adjust the mounting position of the hinge pin 35 .

In this embodiment, the support mechanism in which the slide pin 50 is loosely fitted in the slide groove 41 has been described as an example. It may be slidably supported by inserting a plate-like or bar-like connecting link into the inside thereof.

Further, the sliding groove 41 does not have to pass through the front and back of the connecting link 40, but rather, a hole whose diameter increases upward from the lower end is formed along the longitudinal direction, and the upper end of the sliding pin 50 expands in diameter. may be inserted.

10 main body 20 power source (motor)
21 rotary shaft (output shaft)
30 crank 33 crank hole (mounting hole)
34 Crank hole (mounting slot)
35 hinge pin 40 connecting member (connecting link)
41 slotted hole (sliding groove)
50 sliding pin 60 diffusion part 61 gutter part 100 diffusion device 200 powder feeder 203 discharge chute 300 vibration feeder 301 receiver (trough)

Claims (4)

The receiver is provided between a discharge chute of a powder feeder for conveying a fixed amount and a receiver of a vibrating feeder disposed below the discharge chute, and receives the powder discharged from the discharge chute. A diffusion device for granules to be diffused in,
a power source that is attached to the main body and rotates the rotating shaft;
a crank fixed to the rotating shaft;
a connecting member whose base end side is rotatably fixed to the crank via a hinge pin;
a diffusing section provided on the tip side of the connecting member and onto which the granular material discharged from the discharge chute drops onto the upper surface;
The main body and the connecting member are connected by a support mechanism that supports the tip of the connecting member so as to translate and swing along a plane direction orthogonal to the rotation axis. diffusion device. The connecting member is a rod-shaped or plate-shaped elongated member, and has an elongated hole formed along its longitudinal direction with a length that is at least twice the distance between the rotation shaft and the hinge pin,
the body portion includes a sliding pin extending along a vertical direction toward the connecting member;
2. The diffusion device according to claim 1, wherein the support mechanism is configured by fitting the sliding pin into the elongated hole. 3. The diffusing device according to claim 1, wherein the diffusing portion is provided with a plurality of gutter portions extending along the translational direction of the connecting member. 4. The diffusion according to any one of claims 1 to 3, wherein the crank is provided with crank holes for supporting the hinge pin at a plurality of positions with different distances from the rotation axis. Device.

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