JP2020157241A - Excessive powder recovery device - Google Patents

Abstract

To provide an excessive powder recovery device which enables suitable recovery of excessive powders and suitable discharge of an article.SOLUTION: An excessive powder recovery device 10 comprises: a cylindrical body 12 which is provided with an inlet 12a from which an article is inputted and an outlet 12b from which the article is discharged, and which has a side wall 120 formed with a plurality of openings 12c capable of holding the article inside; a first drive part 14 which rotates the cylindrical body 12 with an axis L of the cylindrical body 12 as a center line; a second drive part 15 which reciprocates the cylindrical body 12 in a direction along the axis L; and a control part 16 which controls the first drive part 14 and the second drive part 15 so that excessive powders are discharged from the plural openings 12c and the article is discharged from the outlet 12b.SELECTED DRAWING: Figure 1

Description

The present invention relates to a surplus powder recovery device.

Goods such as candies sprinkled with powder such as sugar and seasoning materials are distributed as commercial products. If excess powder (surplus powder) falls on a combination weighing device or the like when weighing and packaging such an article, it may lead to a decrease in productivity. Therefore, collect the excess powder from the article in advance. Is desirable. For example, Patent Document 1 describes a device that discharges an article from a lower opening of a drum while discharging excess powder from the plurality of slits by rotating a drum in which a plurality of slits are formed in an inclined state. Has been done.

Japanese Unexamined Patent Publication No. 61-85181

However, in the apparatus described in Patent Document 1, since the transportation of the articles uses the downward gradient of the drum, there is a possibility that a larger amount of the articles than expected may be unexpectedly discharged due to the weight of the articles themselves. Excess powder has not been sufficiently recovered from the articles that were suddenly discharged. Further, in the apparatus described in Patent Document 1, since the amount of articles discharged from the drum depends on the tilt angle of the drum, it is necessary to adjust the tilt angle of the drum in order to adjust the discharge amount of the articles. However, it is not realistic to adjust the tilt angle of the drum because changing the tilt angle of the drum requires changing the height of at least one of the upstream side and the downstream side of the device.

Therefore, an object of the present invention is to provide a surplus powder recovery device capable of appropriately recovering surplus powder and appropriately discharging articles.

The surplus powder recovery device of the present invention is a cylinder provided with an input port for inserting an article and an discharge port for discharging an article, and has a side wall having a plurality of openings capable of holding the article inside. Excess powder is discharged from the cylinder, the first drive unit that rotates the cylinder about the axis of the cylinder as the center line, the second drive unit that reciprocates the cylinder in the direction along the axis, and a plurality of openings. Further, it includes a control unit that controls the first drive unit and the second drive unit so that the article is discharged from the discharge port.

In this surplus powder recovery device, a first drive unit and a second drive unit provided independently of each other are provided on the cylinder body so that excess powder is discharged from a plurality of openings formed in the side wall of the cylinder body. It is controlled so that the article is discharged from the outlet. Therefore, according to this surplus powder recovery device, it is possible to appropriately recover the surplus powder and appropriately discharge the article.

In the surplus powder recovery device of the present invention, the control unit is the second drive unit so that the acceleration in the direction from the discharge port to the inlet is larger than the acceleration in the direction from the inlet to the discharge port in the reciprocating movement of the cylinder. May be controlled. As a result, a predetermined amount of the article can be reliably discharged from the discharge port. In addition, the cylinder can be made to function like a sieve, and excess powder can be reliably discharged from a plurality of openings.

In the surplus powder recovery device of the present invention, the axis may extend in the direction along the horizontal direction. As a result, the layout of each configuration in the surplus powder recovery device can be simplified.

In the surplus powder recovery device of the present invention, the side wall includes a frustum-shaped portion that narrows from the inlet to the discharge port, and a plurality of openings may be formed in the frustum-shaped portion. As a result, the article is conveyed uphill inside the cylinder, so that the residence time of the article inside the cylinder can be secured, and the excess powder can be reliably discharged from the plurality of openings.

In the surplus powder recovery device of the present invention, a plurality of openings may be formed in a region of the side wall on the inlet side of the region including the discharge port. As a result, it is possible to prevent the surplus powder from falling to the discharge destination of the article by the surplus powder recovery device.

The surplus powder recovery device of the present invention may further include a recovery chute provided with a recovery port having a shape along the lower portion of the side wall. As a result, excess powder discharged from the plurality of openings can be reliably recovered.

In the surplus powder recovery device of the present invention, the width of the recovery port in the direction along the axis may include the width in which the region in which the plurality of openings are formed reciprocates. As a result, the surplus powder discharged from the plurality of openings can be recovered more reliably.

The surplus powder recovery device of the present invention may further include an air injection unit that injects air from above with respect to a region in which a plurality of openings are formed. As a result, it is possible to reliably discharge the surplus powder from the plurality of openings while preventing the excess powder from being clogged in the plurality of openings.

The surplus powder recovery device of the present invention is arranged on the upstream side of the charging port and further includes a saucer to which articles are supplied from the outside, and the second drive unit reciprocates the cylinder and the saucer integrally in the direction along the axis. You may move it. As a result, the article can be smoothly supplied from the upstream line to the surplus powder recovery device.

According to the present invention, it is possible to provide a surplus powder recovery device capable of appropriately recovering surplus powder and appropriately discharging articles.

It is a block diagram of the surplus powder recovery apparatus of one Embodiment. It is an end view along the line II-II of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and duplicate description will be omitted.
[Structure of combination weighing device]

Prior to the description of the configuration of the surplus powder recovery device of one embodiment, the configuration of the combination weighing device to which the article is discharged by the surplus powder recovery device of one embodiment will be described. As shown in FIG. 1, the combination weighing device 1 includes a charging chute 2, a distributed feeder 3, a plurality of radiating feeders 4, a plurality of pool hoppers 5, a plurality of weighing hoppers 6, a collecting chute 7, and the like. It includes a timing hopper 8. The combination weighing device 1 weighs the article so as to reach the target weighing value and supplies it to the bag making / packaging machine 9. The bag-making and packaging machine 9 forms the film into a bag having a predetermined capacity, and packs the articles weighed and supplied by the combination weighing device 1 into bags.

The throwing chute 2 receives an article supplied from the outside and discharges it downward. The dispersion feeder 3 is arranged below the input chute 2. The dispersion feeder 3 vibrates the conical transport surface that spreads downward to transport the article discharged from the charging chute 2 to the top of the transport surface to the outer edge of the transport surface. The plurality of radiating feeders 4 are arranged radially below the dispersion feeder 3. Each radiating feeder 4 vibrates the trough to convey articles discharged from the outer edge of the transport surface of the distributed feeder 3 to the inner end of the trough to the outer end of the trough.

The plurality of pool hoppers 5 are arranged in a ring shape below the plurality of radiation feeders 4. Each pool hopper 5 temporarily accumulates articles discharged from the corresponding radiant feeder 4. Specifically, each pool hopper 5 accumulates articles discharged from the corresponding radiant feeder 4 in a state where the gate is closed, and opens the gate from that state to discharge the articles downward. The plurality of weighing hoppers 6 are arranged in an annular shape below the plurality of pool hoppers 5. Each weighing hopper 6 temporarily accumulates articles discharged from the corresponding pool hopper 5. Specifically, each weighing hopper 6 accumulates articles discharged from the corresponding pool hopper 5 with the gate closed, and opens the gate from that state to discharge the articles downward.

The collecting chute 7 is arranged below the plurality of weighing hoppers 6. The collecting chute 7 collects the articles discharged from each measuring hopper 6 and discharges them downward. The timing hopper 8 is arranged below the collective chute 7. The timing hopper 8 temporarily accumulates the articles discharged from the collecting chute 7. Specifically, the timing hopper 8 accumulates the articles discharged from the collecting chute 7 in a state where the gate is closed, and opens the gate from that state to discharge the articles downward. The articles discharged from the timing hopper 8 are supplied to the bag making and packaging machine 9.

In the combination weighing device 1 configured as described above, when an article is temporarily accumulated in each weighing hopper 6, a weighing value corresponding to the mass of the article is measured. Then, a combination of measurement values is selected from the plurality of measurement values so that the total value falls within a predetermined range with the target measurement value as the lower limit value, and the article is discharged from the measurement hopper 6 corresponding to the combination. In this embodiment, the articles to be weighed and packaged are articles such as candy sprinkled with powder such as sugar and seasoning material.
[Configuration of surplus powder recovery device]

Next, the configuration of the surplus powder recovery device of one embodiment will be described. As shown in FIG. 1, the surplus powder recovery device 10 includes a device main body 11, a cylinder 12, a saucer 13, a first drive unit 14, a second drive unit 15, a control unit 16, and a collection chute. A collection container 18, an air injection unit 19, and an air injection unit 19 are provided. The apparatus main body 11 is arranged on a gantry M installed so that at least a portion of the charging chute 2 of the combination weighing apparatus 1 projects upward. In FIG. 1, the recovery chute 17 and the recovery container 18 are shown by a two-dot chain line.

The tubular body 12 has an input port 12a into which the article is inserted and an discharge port 12b in which the article is discharged. The tubular body 12 is attached to the first drive unit 14 so that the axis L of the tubular body 12 (for example, the line passing through the center of gravity of the input port 12a and the center of gravity of the discharge port 12b) extends in the horizontal direction. Be done. In this state, the discharge port 12b is arranged above the charging chute 2 of the combination weighing device 1. The tubular body 12 is removable from the first drive unit 14.

The tubular body 12 has a side wall 120 that defines an inlet 12a and an outlet 12b. The side wall 120 includes a first portion 121 that defines the inlet 12a and a second portion 122 that defines the outlet 12b. The second portion 122 is a frustum-shaped portion that narrows from the inlet 12a toward the outlet 12b. In the present embodiment, the outer shape of the first portion 121 is cylindrical, and the outer shape of the second portion 122 is truncated cone. That is, in the present embodiment, the input port 12a and the discharge port 12b have a circular shape.

A plurality of openings 12c are formed in the second portion 122 of the side wall 120. More specifically, the plurality of openings 12c are formed in the region R2 of the second portion 122 on the input port 12a side of the region R1 including the discharge port 12b. Each opening 12c has a shape that allows the article to be held inside the cylinder 12. That is, articles such as candy cannot pass through each opening 12c, and powder such as sugar and seasoning material can pass through each opening 12c. In the present embodiment, each opening 12c is a through hole formed in the side wall 120, and the plurality of openings 12c are uniformly distributed in the region R2.

The saucer 13 is arranged on the upstream side of the input port 12a. The saucer 13 is attached to the second drive unit 15 so that the bottom surface 13a of the saucer 13 is horizontal. In this state, the downstream end of the saucer 13 is arranged in the input port 12a of the tubular body 12. Articles are supplied to the saucer 13 from the outside. In the present embodiment, the article is sprinkled with powder by a seasoning device (not shown) arranged on the upstream side of the surplus powder recovery device 10, and the dusted article is supplied to the saucer 13.

The first drive unit 14 is arranged at a portion connecting the cylinder body 12 and the saucer 13, and is composed of a drive motor, gears, and the like. The first drive unit 14 rotates the tubular body 12 with the axis L as the center line (see arrow A in FIG. 2). The second drive unit 15 is arranged in the device main body 11 and is composed of a drive motor, gears, and the like. The second drive unit 15 reciprocates the tubular body 12 and the saucer 13 in a direction along the axis L (see arrow B in FIG. 1).

The control unit 16 is arranged in the device main body 11 and is composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The control unit 16 controls the first drive unit 14 and the second drive unit 15 so that excess powder is discharged from the plurality of openings 12c and articles are discharged from the discharge port 12b. In the present embodiment, the control unit 16 makes the acceleration in the direction from the discharge port 12b toward the input port 12a larger than the acceleration in the direction from the input port 12a toward the discharge port 12b in the reciprocating movement of the cylinder body 12 and the saucer 13. 2nd drive unit 15 is controlled.

As shown in FIGS. 1 and 2, the recovery chute 17 has a recovery port 17a that has a shape along the lower portion of the second portion 122 of the tubular body 12. That is, the collection port 17a has a shape that covers the lower portion of the second portion 122 of the tubular body 12 through a predetermined gap. The width of the collection port 17a in the direction along the axis L includes the width in which the region R2 in which the plurality of openings 12c are formed reciprocates. That is, the region R2 in which the plurality of openings 12c are formed reciprocates within the width of the collection port 17a in the direction along the axis L. The recovery container 18 is arranged below the recovery chute 17 and accumulates excess powder discharged from the recovery chute 17. The air injection unit 19 injects air from above with respect to the region R2 in which the plurality of openings 12c are formed.
[Action and effect]

As described above, in the surplus powder recovery device 10, the first drive unit 14 and the second drive unit 15 provided independently of each other are surplus from the plurality of openings 12c formed in the side wall 120 of the tubular body 12. The control unit 16 controls so that the powder is discharged and the article is discharged from the discharge port 12b provided on the cylinder 12. Therefore, according to the surplus powder recovery device 10, it is possible to appropriately recover the surplus powder and appropriately discharge the article.

If excess powder falls on the combination weighing device 1 or the like when weighing and packaging an article such as a candy sprinkled with powder such as sugar or a taste material, there is a risk of reducing productivity. Therefore, it is extremely important to recover the surplus powder from the article in advance by the surplus powder recovery device 10.

Further, in the surplus powder recovery device 10, the acceleration of the second drive unit 15 in the reciprocating motion of the tubular body 12 from the discharge port 12b toward the charging port 12a is higher than the acceleration in the direction from the charging port 12a toward the discharge port 12b. It is controlled by the control unit 16 so as to be large. As a result, a predetermined amount of the article can be reliably discharged from the discharge port 12b. Further, the tubular body 12 can be made to function like a sieve, and excess powder can be reliably discharged from the plurality of openings 12c.

Further, in the surplus powder recovery device 10, the axis L extends in the direction along the horizontal direction. As a result, the layout of each configuration in the surplus powder recovery device 10 can be simplified.

Further, in the surplus powder recovery device 10, a plurality of openings 12c are formed in the second portion 122 of the side wall 120, which narrows from the input port 12a toward the discharge port 12b. As a result, the article is conveyed uphill inside the cylinder 12, so that the residence time of the article inside the cylinder 12 can be secured, and the excess powder can be reliably discharged from the plurality of openings 12c. it can.

Further, in the surplus powder recovery device 10, a plurality of openings 12c are formed in a region R2 of the side wall 120 on the input port 12a side of the region R1 including the discharge port 12b. As a result, it is possible to prevent the surplus powder from falling to the combination weighing device 1 which is the discharge destination of the article by the surplus powder recovery device 10. That is, since the plurality of openings 12c are not formed in the region R1 including the discharge port 12b in the side wall 120 of the tubular body 12, the discharge port 12b is directly (that is, another) above the input chute 2 of the combination weighing device 1. Can be placed (without going through a feeder).

Further, in the surplus powder recovery device 10, the recovery port 17a of the recovery chute 17 has a shape along the lower portion of the second portion 122 of the tubular body 12. As a result, excess powder discharged from the plurality of openings 12c can be reliably recovered.

Further, in the surplus powder recovery device 10, the width of the recovery port 17a in the direction along the axis L includes the width in which the region R2 in which the plurality of openings 12c are formed reciprocates. As a result, the surplus powder discharged from the plurality of openings 12c can be recovered more reliably.

Further, in the surplus powder recovery device 10, the air injection unit 19 injects air from above with respect to the region R2 in which the plurality of openings 12c are formed. As a result, it is possible to reliably discharge the surplus powder from the plurality of openings 12c while preventing the excess powder from being clogged in the plurality of openings 12c.

Further, in the surplus powder recovery device 10, the saucer 13 to which articles are supplied from the outside is arranged on the upstream side of the input port 12a of the cylinder body 12, and the second drive unit 15 is the cylinder body in the direction along the axis L. 12 and the saucer 13 are reciprocated as one. As a result, the article can be smoothly supplied from the upstream line to the surplus powder recovery device 10.
[Modification example]

The present invention is not limited to the embodiments described above. The plurality of openings 12c may be formed on the side wall 120, for example, by forming at least a part of the tubular body 12 with a mesh-like member. Further, the plurality of openings 12c may be a plurality of slits extending in a direction along the axis L, respectively. Further, the second drive unit 15 may reciprocate the tubular body 12 so as to include, for example, a component in the vertical direction in addition to the component in the direction along the axis L. Further, the recovery chute 17 may be attracted by air, and the air and the powder may be separated by a filter on the downstream side of the recovery chute 17. Further, a plurality of types of cylinders 12 and cylinders having no opening 12c may be interchangeable.

10 ... Excess powder recovery device, 12 ... Cylinder, 12a ... Input port, 12b ... Discharge port, 12c ... Opening, 13 ... Frustum, 14 ... 1st drive unit, 15 ... 2nd drive unit, 16 ... Control unit, 17 ... Recovery chute, 17a ... Recovery port, 19 ... Air injection section, 120 ... Side wall, 122 ... Second part (frustum-shaped part), L ... Axis line, R1, R2 ... Region.

Claims (9)

A cylinder having a loading port for inserting an article and a discharging port for discharging the article, and having a side wall having a plurality of openings capable of holding the article inside.
A first drive unit that rotates the cylinder with the axis of the cylinder as the center line, and
A second drive unit that reciprocates the cylinder in a direction along the axis, and
A surplus powder recovery device including a first drive unit and a control unit that controls the second drive unit so that excess powder is discharged from the plurality of openings and the article is discharged from the discharge port. The control unit controls the second drive unit so that the acceleration in the direction from the discharge port to the input port becomes larger than the acceleration in the direction from the input port to the discharge port in the reciprocating movement of the cylinder. The surplus powder recovery device according to claim 1. The surplus powder recovery device according to claim 1 or 2, wherein the axis extends in a direction along a horizontal direction. The side wall includes a frustum-shaped portion that narrows from the inlet to the outlet.
The surplus powder recovery device according to claim 3, wherein the plurality of openings are formed in the frustum-shaped portion. The surplus powder recovery device according to any one of claims 1 to 4, wherein the plurality of openings are formed in a region of the side wall on the inlet side of the region including the discharge port. The surplus powder recovery device according to any one of claims 1 to 5, further comprising a recovery chute provided with a recovery port having a shape along the lower portion of the side wall. The surplus powder recovery device according to claim 6, wherein the width of the collection port in the direction along the axis includes a width in which the region in which the plurality of openings are formed reciprocates. The surplus powder recovery device according to any one of claims 1 to 7, further comprising an air injection unit that injects air from above with respect to the region where the plurality of openings are formed. Further provided with a saucer arranged on the upstream side of the input port and to which the article is supplied from the outside.
The surplus powder recovery device according to any one of claims 1 to 8, wherein the second drive unit reciprocates the cylinder body and the saucer integrally in the direction along the axis.

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