JPH072492Y2 - Rotating hopper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a rotary hopper for accommodating and holding and discharging articles such as various works or powder particles.

[Problems to be Solved by Conventional Techniques and Inventions] When a work is fed to a parts feeder for feeding, if the work is placed on the parts feeder for a long time, the work may be damaged. In such a case, it is necessary to supply a certain amount of workpieces to the parts feeder almost quantitatively every time the workpieces are exhausted from the parts feeder or when the workpieces are reduced to a certain amount.

Supply to such a part feeder is conventionally performed manually, but in order to efficiently operate the part feeder and other assembling devices, etc., it is necessary to always wait. It was necessary to supply the work pieces in a timely manner, which was extremely troublesome.

Also, for example, a bag for packaging a certain amount of goods with a certain degree of accuracy,
In the case of packaging in boxes, bottles, etc., if the items are directly supplied to the packaging bags, boxes, bottles, etc. while measuring the amount, the supply speed will be considerably slowed down, which will also cause a decrease in overall work efficiency. Becomes

The present invention has been made in view of the above problems existing in the prior art, and an object of the present invention is to intermittently supply a plurality of parts to a part feeder or the like by one product supply operation. Automatic supply of goods,
Another object of the present invention is to provide a rotary hopper capable of improving the overall work efficiency by increasing the supply speed of articles as compared with the case of direct supply.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the rotary hopper of the present invention is rotatably supported with respect to a rotary table by a rotary table and a rotary axis that forms a substantially circumferential direction. , The portion radially inward of the rotation axis is supported on the rotary table so that it can be tilted substantially radially outward and is held on the rotary table with a circumferential interval therebetween. A plurality of buckets, an intermittent drive means for intermittently driving the rotary table at each rotation angle according to the central angle formed by the buckets, and a portion of the buckets radially inward of the rotation axis line at a constant rotation angle position. The tilting member that pushes up the part to tilt the bucket and discharges the contents, and the tilting part of the rotary table that is provided below the part radially inward of the rotation axis of each bucket. An insertion portion through which the member can be inserted in a substantially vertical direction, a vertical drive means for driving the tilting member in a substantially vertical direction while the rotation of the rotary table driven intermittently is stopped, and a fixed position where the bucket is tilted. Except for the vicinity, it is provided in a fixed state so as to surround the rotary table below the portion radially outward of the rotation axis of the non-tilted bucket, and lowers the bucket that is tilting approximately radially outward. A bucket tilting prevention member that supports from the side to prevent tilting, and the center of gravity of each bucket is located radially inward of its rotation axis in both the untilted state and the tilted state. I am trying.

While the rotary table driven intermittently is not rotating, the insertion portion of the rotary table is located at a position where the tilting member can be inserted substantially vertically.

When the vertical drive means is operated in a state where articles are supplied to each bucket in the non-tilting state, first, the tilting member is inserted through the insertion portion located at the constant rotation angle position in a substantially upward direction,
The portion radially inward of the pivot axis of the bucket at that position is pushed up. Since a bucket tilting prevention member is not provided near a certain position where the bucket is tilted,
The bucket tilts outward in the substantially radial direction, and the contents are discharged in that direction.

Next, the tilting member descends and exits the insertion portion in a substantially downward direction. Since the center of gravity of the bucket is located radially inward of the rotation axis of the bucket in both the non-tilted state and the tilted state, the bucket returns to the non-tilted state by its own weight as the tilting member descends.

After that, when the intermittent driving means is operated, the rotary table is driven by the rotation angle corresponding to the central angle formed by the buckets, and the rotation table is brought into the rotation suspension state again. Since the next bucket containing the articles reaches a certain position where the content articles are discharged by tilting, when the vertical drive means is actuated again, the tilting member inserts the insertion section at the position of the bucket to tilt the bucket. , Articles are discharged from the bucket.

While the turntable is rotating and at rest, except near a certain position where the bucket is tilted and the contents are discharged.
A bucket tilting prevention member is provided below the portion radially outward of the rotation axis of the bucket in the non-tilted state so as to surround the rotary table, and the bucket that is tilted substantially radially outward from the lower side. Since it is supported, at the position where the content article should not be discharged, the buckets cannot be tilted substantially outward in the radial direction, and the content article is reliably held. Since the portion of the bucket radially inward of the rotation axis is supported on the rotary table, it is not possible to tilt it substantially outward in the radial direction.

During the rotation suspension of the rotary table, the articles can be supplied to a plurality of empty buckets at a time, and the intermittent drive means intermittently drives the rotary table at a rotation angle corresponding to the interval between the buckets. In addition, by tilting each bucket by the tilting member at a constant rotation angle position and discharging the contents articles, it is possible to automatically intermittently supply the articles to the parts feeder and the like a plurality of times. .

Further, while the rotary table is intermittently driven by the intermittent drive means at every rotation angle according to the bucket interval, the tilting member tilts the bucket at a constant rotation angle position to eject the contents. Then, when the articles are supplied to the packaging bag and the like and the articles are supplied to the empty bucket at another position, for example, in the case of the constant quantity supply, when the article supply speed to the bucket is relatively low, the bucket tilts. The time required to discharge the content item, that is, to supply the item, can be shorter than the time required to supply the item to the bucket. Therefore, during that time difference,
The articles discharged from the bucket can be directly or indirectly subjected to various treatments to improve the work efficiency as a whole.

Since the rotary table holds a plurality of buckets and the rotary table is driven by the intermittent driving means, the space required is relatively small.

Further, since the bucket is moved by rotating the rotary table, maintenance is easy.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings.

The drawings are all about one embodiment of the present invention. FIG. 1 is a partially cutaway front view and FIG. 2 is a plan view.

A is a rotary hopper as an embodiment of the present invention, and B is a bowl feeder.

In the rotary hopper A, 10 is a disk-shaped rotary table,
12 is the base plate, 14 is the first for driving the rotary table 10.
It is a reversible motor. The rotary table 10 may have a plate shape, a frame shape, a frame shape, or the like. The first reversible motor 14 is vertically fixed to the base 18 via a support column 16. The base plate 12 is fixed to the upper end of the first reversible motor 14, and the rotary table 10
The rotary table shaft 20 projecting downward from the central portion of the output shaft 22 and the output shaft 22 projecting upward of the first reversible motor 14 are coupled via a coupling 24. Also turntable 10
Is a cylindrical member 26 fixed to the upper side of the central portion of the base plate 12 so as to surround the output shaft 22 and the coupling 24, and a bearing 28 provided at the upper end of the cylindrical member 26.
Is rotatably supported via.

Eight buckets 30 are held on the rotary table 10 in a point-symmetrical manner at each central angle of 45 degrees. In a normal state, that is, in a state in which articles can be stored, each bucket 30 has a vertical rectangular side plate 30a on the rotation center side, an inclined rectangular side plate 30b on the outer peripheral side, both trapezoidal side plates 30c, a bottom plate 30d, and an inclined side plate. It is composed of a rectangular protrusion 30e protruding from the lower surface of the rectangular side plate 30b, and is held by a pair of holding columns 32 so as to be tiltable by rotation at the upper portion of the rectangular protrusion 30e, that is, the outer peripheral portion. Holding column in each bucket 30 where the axis of rotation is located
The bottom located radially inward of 32 has a rotary table 10
It is supported on the upper surface.

A through hole 36 for inserting the tilting rod member 34 is provided below the rectangular protrusion 30e of each bucket 30 on the rotary table 10. However, as long as the tilting rod member 34 can be inserted, a cutout may be used instead of the through hole. The tilting rod member 34 is vertically supported by a guide sleeve 38 provided upright on the base plate 12 at a position close to the bowl feeder B so as to be vertically movable. The lower portion of the tilting rod member 34 penetrates an insertion hole 40 provided in the base plate 12 and projects below the base plate 12. An upper end portion of the tilting rod member 34 is formed in a hemispherical head portion 34a having a diameter larger than the inner diameter of the guide sleeve 38, and a vertical slit 38 provided on the inner peripheral side of the guide sleeve 38.
A bottom dead center indicating projection 34b for detecting the bottom dead center position of the tilting rod member 34 is projected from the middle portion of the tilting rod member 34 from a to the side. Reference numeral 42 denotes a bottom dead center position detecting photo sensor, and the base plate 1 so that the bottom dead center indicating projection 34b is present at the detection position when the tilting rod member 34 is located at the bottom dead center.
It is provided on 2. Reference numeral 44 denotes a second reversible motor suspended and fixed to the lower side of the base plate 12. A cam 48 is provided on the output shaft 46 of the second reversible motor 44, and the rotation of the cam 48 drives the tilting rod member 34 up and down. Then, when the tilting rod member 34 is located directly below the through hole 36 of the rotary table 10, the second reversible motor 44 is rotated to raise the tilting rod member 344, and the head portion 34a of the tilting rod member 34 is square. The protrusion 30e is pushed up, the bucket 30 is tilted to the outer peripheral side, and the contents are discharged. As shown by the solid line and the chain double-dashed line in FIG. 1, the center of gravity of each bucket 30 has a diameter of the rotary table 10 that is larger than that of the holding column 32 on which the rotation axis is located in both the untilted state and the tilted state. Located inward.

Further, on the lower side of the rotary table 10, corresponding to the installation intervals of the buckets 30, there are provided angle indicating projections 50 projecting downward in order to detect the rotational angular position in the same circumference at every 45 degrees center. ing. A rotation angle position detecting photosensor 52 is fixedly installed at one location on the base plate 12 so that the lower portion of the angle indicating projection 50 can pass the detection position by the rotation of the rotary table 10. In the through hole 36 of the rotary table 10, the angle indicating protrusion 50, the tilting rod member 34, and the rotation angle position detecting photosensor 52, the lower portion of the angle indicating protrusion 50 is at the detection position of the rotation angle position detecting photosensor 52. The tilting rod member 34 is arranged in such a positional relationship that it is located directly below the through hole 36 of the rotary table 10 when existing.

54 is a support plate attached to the outer peripheral side of the guide sleeve 38.
It is a chute fixed through 55. This shoot 54
Is arranged so that the contents of the bucket 30 tilted by the tilting rod member 34 are supplied into the bowl 56 of the bowl feeder B via the chute 54.

Reference numeral 58 denotes a support member for preventing tilting of the bucket 30, which is substantially C-shaped in a plane and arranged so that the upper end portion is located slightly below the outer peripheral side end portion of the bucket 30 except for the vicinity of the upper end portion of the chute 54. This prevents the bucket 30 located at a position other than the position facing the chute 54 from tilting too much, and increases the reliability of holding the work.

Work can be supplied to each bucket 30 of the rotary hopper A by one operation. When the rotary hopper A is operated after the work is supplied to each bucket 30 almost quantitatively,
The photo sensor 42 for detecting the position of the bottom dead center has a projection 34 for indicating the bottom dead center.
When b is detected, that is, when the tilting rod member 34 is located at the bottom dead center and the head 34a is located below the through hole 36 of the rotary table 10, the first reversible motor 14 is
Rotate in a fixed direction, and the turntable 10 rotates. Then, the photo sensor 52 for detecting the rotation angle position is a projection for indicating the angle.
By detecting 50, the first reversible motor 14 is stopped with the tilting rod member 34 positioned directly below the through hole 36 of the rotary table 10.

Then, if the work is damaged when the work is placed on the bowl feeder B for a long time, there is no work in the bowl feeder B, or the number of works is below a certain number through a sensor. After the electrical confirmation, the second reversible motor 44 makes one rotation and the tilting rod member 34 moves up and down. As a result, the work accommodated by tilting the bucket 30 toward the outer peripheral side is discharged, and is supplied into the bowl of the bowl feeder B via the chute 54.

After tilting the bucket 30 and electrically confirming the bottom dead center position detection signal by the bottom dead center position detection photosensor 42,
The first reversible motor 14 again rotates in the same direction,
Photo sensor 52 for detecting the rotation angle position again by rotating
The first reversible motor 14 is stopped again when the angle indicating protrusion 50 is detected by the second reversible motor 44.
Rotates once. And by repeating the above operation,
The intermittent work can be automatically supplied to the bowl feeder B.

The work can be re-supplied to each of the empty buckets 30 in a single operation, for example, when seven buckets 30 are empty or after all the buckets 30 are empty. .

In the above embodiment, the rotation angle position detecting photo sensor 52, the angle indicating projection 50, and the first reversible motor 14 mainly constitute an intermittent drive means, and the cam 48 and the second reversible motor 44 mainly move up and down. It constitutes a driving means.

Further, in the case of packing a certain amount of articles with a certain degree of accuracy in a packaging bag, a box, a bottle, etc., the first reversible motor 14 is stopped, and the second reversible motor 44 makes one rotation to tilt the rod member 34. Moves up and down, the bucket 30 is tilted toward the outer peripheral side, and the stored article is discharged, and the article is quantitatively supplied to the bucket 30 at the left end in FIG.

When the fixed quantity supply of the articles to the left end bucket 30 is completed after the articles are discharged in a shorter time than the fixed quantity supply due to the tilting of the bucket 30 at the right end in FIG. 1, the bottom dead center position by the photo sensor 42 for detecting the bottom dead center position. After electrically confirming both the detection signal and the fixed quantity supply end signal from the fixed quantity supply device (not shown), the first reversible motor 14 again rotates in the same direction. Then, the first reversible motor 14 is stopped again by the rotation of 45 degrees, and the above operation is repeated.

Since the time required to discharge the content item due to the tilting of the right end bucket 30 can be shortened compared to the time required to supply the item to the left end bucket 30, the supply of the item into the packaging bag is performed during the time difference due to the reduction. After that, various treatments such as sealing the packaging bag can be performed, and the working time as a whole can be efficiently used.

The discharging speed of the content item from the bucket 30 can be changed by the rotation speed of the second reversible motor 44, the shape of the cam, and the like, and the impact due to discharging can be mitigated.

Further, in the above embodiments, reversible motors are used for both the intermittent drive means and the vertical drive means,
Of course, the present invention is not limited to this. For example, the rotary table 10 may be driven by a stepping motor. It is also possible to use a known mechanism other than those shown in the above embodiments. It is of course possible to use various actuators such as a pneumatic actuator instead of the electric motor.

As a reference example, a bucket conveyor circulated by a chain is intermittently driven at every pitch corresponding to the distance between the buckets, the articles are supplied to the buckets during a rest, and the content articles when the bucket falls due to the inversion of the circulating chain. It is possible to automatically discharge the parts from the parts feeder or the like a plurality of times by discharging the product once or to increase the supply speed of the product. However, in this case, unlike the rotary hopper of the present invention, it is difficult to always discharge the contents articles well at every pitch, the required space is relatively large, and maintenance of the chain is troublesome. There is a drawback that it costs.

[Advantages of the Invention] In the rotary hopper of the present invention, a plurality of buckets, which are held at the rotary table at intervals in the circumferential direction, are rotatably supported on the rotary table by a rotary axis that forms a substantially circumferential direction. At the same time, by supporting the portion radially inward of the rotation axis on the rotary table, it is possible to incline substantially outward in the radial direction, and the center of gravity of each bucket is not tilted or tilted. Also in the radial direction inward of the rotation axis, the tilting member is inserted substantially vertically in the rotary table below the portion radially inward of the rotation axis of each bucket. An insertion part that can be inserted is provided, and at a certain rotation angle position, the part of the bucket that is radially inward of the rotation axis is pushed up to tilt the bucket, and the tilting member for discharging the contents and the intermittent To By providing a vertical drive means for driving the tilting member in a substantially vertical direction during the rotation stop of the driven rotary table, it is possible to provide a fixed article discharge means and a return means for each bucket without a specific article discharge means or return means. By substantially vertically moving the tilting member provided only at the rotation angle position, the contents are discharged by tilting each bucket, and the bucket is tilted further by returning to the non-tilt state due to the weight of the bucket. Except near a certain position, the rotary table is surrounded below the portion radially outward of the rotation axis of the bucket in the non-tilted state, and the bucket that is about to be tilted radially outward is supported from below. By providing a bucket tilting prevention member so as to prevent tilting, the rotation angle at which the content article should be discharged without providing a special article discharge prevention unit for each bucket. To enhance the reliability of the content article holding bucket at a position other than the position.

As described above, according to the rotary hopper of the present invention, it is possible to intermittently supply the articles to the parts feeder and the like multiple times by one article supply operation with a configuration that is as compact and simple as possible and easy to maintain. It can be done automatically and the labor can be reduced. Also, the time required to discharge the contents articles due to the tilting of the bucket and the time required to supply the articles to the bucket can be increased by increasing the discharge speed (contents supply speed) of the contents articles. The work efficiency as a whole can be effectively increased by utilizing the time difference between Moreover, since the content item is highly reliably held, the entire work can be performed more reliably and efficiently.

[Brief description of drawings]

The drawings are all about one embodiment of the present invention. FIG. 1 is a partially cutaway front view and FIG. 2 is a plan view. In the drawing, A is a rotary hopper, 10 is a rotary table, and 14 is a first.
A reversible motor, 30 is a bucket, 34 is a tilting rod member, 34b is a bottom dead center indicating projection, 42 is a bottom dead center position detecting photo sensor, 44 is a second reversible motor, 48 is a cam,
Reference numeral 50 is an angle indicating projection, 52 is a rotation angle position detecting photo sensor, and 58 is a bucket tilting prevention supporting member.

Claims (1)

[Scope of utility model registration request] 1. A rotary table and a rotary shaft that is rotatably supported by a rotary axis that forms a substantially circumferential direction, and a portion radially inward of the rotary axis is supported on the rotary table. As a result, the plurality of buckets held on the rotary table at circumferential intervals from each other in a state in which the buckets can be tilted substantially radially outward, and the rotary table is rotated according to the central angle formed by the buckets. Intermittent drive means that drives intermittently at each angle, and tilting for discharging the contents by pushing up the portion of the bucket that is radially inward of the rotation axis at a fixed rotation angle position to tilt the bucket. The member and an insertion portion of the rotary table, which is provided below the portion radially inward of the rotation axis of each bucket, through which the tilting member can be inserted in a substantially vertical direction, and are driven intermittently. Rotating table The vertical drive means for driving the tilting member in a substantially vertical direction during the rotation suspension of the bull, and the radial direction outer than the rotation axis of the bucket in the non-tilted state except for the vicinity of a certain position where the bucket is tilted. It is provided in a fixed state so as to surround the rotary table on the lower side of the portion, and is provided with a bucket tilting prevention member that supports a bucket that is about to tilt outward in the substantially radial direction from below and prevents tilting, The rotary hopper characterized in that the center of gravity of each bucket is located radially inward of its rotation axis in both the non-tilted state and the tilted state.