WO2000073748A1

WO2000073748A1 - Weighed object dispensing mechanism and weighing device

Info

Publication number: WO2000073748A1
Application number: PCT/JP2000/003489
Authority: WO
Inventors: Kenzi Noumi; Masatomi Kawahara
Original assignee: Plus One Techno Co., Ltd.
Priority date: 1999-05-31
Filing date: 2000-05-31
Publication date: 2000-12-07
Also published as: JP4048235B2

Abstract

A weighed object dispensing mechanism capable of continuously performing an operation to dispensing and discharge stored weighed objects by a specified amount, characterized by comprising a hopper which stores the weighed objects and a plurality of rotating tubes which communicate with the discharge part of the hopper and are disposed aslant in a plurality of stages in vertical direction to move the weighed objects discharged from the hopper downward, whereby a weighing device capable of weighing at a higher speed and with higher accuracy can be provided by utilizing such a weighing mechanism.

Description

Description: Mechanism for cutting out objects to be weighed and weighing device

TECHNICAL FIELD The present invention relates to a weighing device and a weighing device for continuously weighing tea, black tea, or other weighed objects by a predetermined amount. Background art

Conventionally, instant soups such as powdered soup, dried foods, tea and tea etc. are packed in bags, but these packs need to be packed with a certain amount of products. As a cutting-out device for bagging the raw material of such a granular material, a device in which several feeders with a vibrator or a screw feeder are arranged on a small bucket conveyor is generally known. I have.

In this cutting device, the raw material is continuously discharged from the supply feeder while applying vibration by a vibrator, and the bucket is continuously operated under the supply feeder. Sent to bagging equipment.

However, in the conventional feeder, in the case of the feeder equipped with a vibrator, the raw material is cut out based on the operation time, so that, for example, the discharge speed of the feeder changes due to voltage fluctuation, or There is a problem that the amount of the material to be cut out varies depending on the stock amount of the material to be weighed in the hopper.

On the other hand, in the case of a screw type feeder, it is good when the material to be weighed is powder, but when there is a large amount of particulate matter in the material to be weighed, it is discharged while pushing the object, so the discharge amount varies and it is difficult to cut out accurately. was.

As a countermeasure, it is necessary for the operator to constantly check and adjust the cutout amount of the device, and always increase the predetermined amount by 15 to 20% so that it does not become smaller than the predetermined amount. It is necessary to set it so that it can be cut out. Waste of raw materials.

FIG. 6 shows an example of a continuous weighing-out apparatus for continuously weighing and granulating powdery and granular materials which can be used by the present inventors to solve the above problems. A continuous weighing-out device A for powdery and granular materials having a configuration is presented.

This machine is capable of accurate cutting, but with only one rotating cylinder, it has only about 15 cutting-offs per minute. Need to line up.

However, if a large number of rotary cylinders are arranged in the row direction, the width of the device A becomes large, and there is a disadvantage that the device does not fit on the line of the conventional cutting device and the bag-filling device which is the subsequent processing. Conventional lines are widely used, and in order to utilize the existing lines, it is necessary to modify the equipment to make it space-saving.

The present invention has been made in view of the above circumstances, and accurately weighs and cuts out a powdery or granular material to be weighed, and continuously weighs and weighs the material that can be applied to a conventional bagging line. A mechanism and a weighing device are provided. Disclosure of the invention

A weighing mechanism for cutting out and weighing an object to be weighed according to claim 1 that meets the above-mentioned object, comprising: a weighing mechanism for continuously performing an operation of cutting out and discharging a contained weighed object by a predetermined amount. A hopper for storing the objects to be weighed, and a plurality of inclined vertical stages for communicating the objects to be weighed discharged from the hopper with the discharge portion of the hopper and moving downward. It has a plurality of rotating cylinders arranged.

The weighing device according to claim 2 is a weighing device that continuously cuts out an object to be weighed, weighs and discharges a predetermined amount, and a hopper that stores the object to be weighed. A plurality of rotating cylinders, which are in communication with a discharge portion of the hopper and move downwardly to be weighed and discharged from the hopper, are disposed in a plurality of stages inclining vertically, and a discharge damper; And a receiving container for temporarily storing the objects to be weighed cut out from the rotary cylinder, and a chute for discharging a predetermined amount of the objects to be weighed discharged from the receiving container downward. The weighing device according to claim 3 is characterized in that, in the weighing device according to claim 2, the weighing device has a weighing device that weighs the weighed object put into the receiving container. I do.

The weighing device according to claim 4 is the weighing device according to claim 3, wherein when the measurement signal from the weigher becomes close to a target value, the rotation of the rotary cylinder is performed. It is characterized by having a motor mechanism for reducing the speed.

The weighing device according to claim 5 is the weighing device according to claims 2 to 4, wherein the hopper has at least a plurality of discharge units arranged in a plurality of stages in a vertical direction. Features.

The weighing device according to claim 6 is the weighing device according to claim 5, characterized in that the hopper has a plurality of discharge units arranged in a plurality of rows.

A weighing device according to a seventh aspect of the present invention is the weighing device according to the second to sixth aspects, wherein the material to be weighed is a powdery or granular material. BEST MODE FOR CARRYING OUT THE INVENTION

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a side sectional view of a weighing device according to an embodiment of the present invention, FIG. 2 is a front view of the device, and FIGS. 3 to 5 are partial detailed views of the device.

As shown in FIGS. 1 and 2, a weighing device 1 according to an embodiment of the present invention is entirely made of a material such as strong iron or stainless steel, and has two portions arranged on a bottom side in two stages. A hopper 3 having a discharge portion 2 and two inclined portions arranged in two stages that are communicated with the discharge portion 2 of the hopper 3 via a bearing 4 and gradually move the particulate matter flowing out of the hopper 3 downward. An elongated rotating cylinder 5 with a rotating shaft, two motor mechanisms 6 arranged in two stages to rotate the rotating cylinder 5, and a two-stage arranged to temporarily store powder and granular material cut out from the rotating cylinder 5 The two receiving containers 7, two mouth cells 8 for weighing the powdery and granular materials put into the receiving containers 7 together with the tare, and the receiving containers 7 based on signals from the load cells 8. Open the discharge damper 9 Open and close two dampers arranged in two stages It has a mechanism 10, one chute 11 for discharging a predetermined amount of particulate matter discharged from the receiving container 7 downward, and a gantry 12 for supporting them. Hereinafter, these will be described in detail.

The hopper 3 has an upper part fixed to a gantry 12, a lower part gradually narrowed to form two discharge parts 2 arranged in two steps on a bottom side, and an opening / closing lid 13 on one bottom side. Is provided so that the remaining weighed material can be discharged to the outside.

Bearings 4 are provided at two discharge portions 2 of the hopper 3, respectively, and one ends of two rotary cylinders 5 arranged in two stages are rotatably supported.

At the entrance end of each of the two rotary cylinders 5, a weighing object introducing cylinder 15 having a blade plate 14 is exchangeably mounted and accumulates near two discharge portions 2 of the hopper 3. The weighed material is agitated and gradually guided to each rotary cylinder 5. The intermediate portion of each rotary cylinder 5 is rotatably supported by an intermediate bearing 16, and the bearing 4 and the intermediate bearing 16 are supported by an inclined support plate 17. Each rotary cylinder 5 is always at a fixed angle. (In the range of 0 to 12 degrees). The inclined support plate 17 is fixed to the mount 12 at a predetermined angle by a fixed support member 18a at the bottom of the mount 12 and an adjustment bolt 18.

A pulley 19 is provided at an intermediate position between the two rotary cylinders 5, and each rotary cylinder 5 has two motors arranged in two stages below the inclined support plate 17 via a timing belt 20. It is connected to the output shaft 36 of the motor.

The rotating cylinders 5 rotate with the rotation of the motors 21, and the objects to be weighed that flow into the rotating cylinders 5 through the weighing object introducing cylinders 15, are rotated by the inclination and rotation of the rotating cylinders 5. It gradually flows downward, and is discharged at a constant speed from each of the rotating cylinder discharge ports 23 to 23. The two receiving containers 7 for receiving the objects to be weighed discharged from the two rotary cylinder discharge rollers 23 are provided with two buckets 25 having a bottom part having an inclined bottom plate 24 and an upper part of each bucket 25. It has two discharge dampers 9 arranged on one of the buckets 25 so as to be openable and closable via the pins 26.

These two receiving containers 7 are suspended from two load cells 8 fixed to the upper part of the gantry 12 as shown in FIG. 3, and each receiving container 7 and its Measure the weight of the weighed material accumulated inside and send out an electrical signal Has become. The signal from the load cell 8 controls the high / low speed switching of each rotary cylinder 5 and the opening / closing timing of each discharge damper 9.

As shown in FIGS. 4 and 5, each of the two receiving containers 7 is provided with a damper opening / closing mechanism 10, and each discharge damper 9 is actuated by a predetermined signal from each load cell 8 to operate each discharge container 9. An object to be weighed having a predetermined weight accumulated in the receiving container 7 is discharged to the lower shot 11.

The damper opening / closing mechanism 10 includes an operating arm 29 fixed via a pin 28 rotatable at one end to lift the projection 27 of the discharge damper 19, and a pin 30 connected to an intermediate portion thereof. Arm 3 1 rotatably connected to the operating arm 29 via a rotating arm 3 3 rotatably connected to the upper part of the connecting arm 31 via a pin 32, and a rotating arm 3 3 Motor 34 that rotates the rotating arm 360 by 360 degrees, a proximity sensor 35 that detects the original position of the rotating arm 33, that is, the opening position of the discharge damper 9, and a support member 36 for the motor 34. ing.

When a predetermined signal is received from the load cell 8, the motor 34 rotates and the rotating arm 33 rotates as shown by the arrow in FIG. 4, the connecting arm 31 is lifted, and the operating arm 29 With the point B as a fulcrum, the point C rises, and the protrusion 27 of the output damper 9 is lifted. As a result, the discharge damper 9 is opened.

As a result, the weighed material accumulated in the designated receiving container 7 is discharged to the lower shot 11, but when the rotating arm 33 rotates, the operating arm 29 returns to the original position and is discharged. Damper 9 closes.

Here, in order to surely operate the rotating arm 33, a proximity sensor 35 for detecting that the rotating arm 33 has rotated 360 degrees and is at the origin position again is provided.

The chute 1 1 for discharging the material to be weighed has a rectangular cross-section, narrows down, and ensures that the weighed material discharged from the two receiving containers 7 is reliably discharged from the lower shot discharge port 37. It has become.

With the above configuration, the material to be powdery and granular material is transferred from the two discharge portions 2 at the bottom of the hopper 3 to the two rotating cylinders via the two weighing object introduction tubes 15. Flow through 5 into two receiving containers 7. Here, each rotating cylinder 5 rotates at a high speed of 100 to 150 rpm until the weight measurement signal of the load cell 8 reaches 90% of the target value, and the weight measurement signal becomes 90% of the target value. At this point, the rotation speed is changed to a low speed of 10 to 15 rpm, and the weighing object is gradually discharged from the rotary cylinders 5 to the receiving container 7 for accurate weighing.

Then, in this configuration, the opening and closing of the discharge damper 9 of the receiving container した whose weighing is completed is controlled so as to be in time for the cycle time of the bag filling line as the post-processing.

The material to be weighed discharged from the designated receiving container 7 is sent to the bagging line through one chute 11.

In the present embodiment, the rotary cylinder 5 is described as having two stages in the vertical direction, but is not necessarily limited to two stages. That is, if a plurality of rotary cylinders 5 are provided in the vertical direction, the conventional line can be used as it is, and moreover, a large-volume cutout can be realized at a higher speed. Similarly, the discharge section 2 provided in the hopper 3 is not limited to a vertically arranged two-stage discharge section. If a plurality of discharge sections 2 are provided, the rotary section 5 can be more efficiently covered. We will be able to send out weighed items.

The plurality of rotary cylinders 5 provided in a plurality of stages may be respectively connected to a plurality of discharge units 2 provided in the hook 3. Further, if the discharge sections 2 are provided not only in the vertical direction but also in a plurality of rows in the horizontal direction, and the rotary cylinders 5 communicate with each other, the speed can be further increased. For example, assuming that two rotating cylinders of two stages are one unit, each unit has a weighing-out capacity of 30 times / minute, so if 10 units are arranged, a total capacity of 30 times / minute is provided. A high-speed weighing and cutting device can be configured.

In addition, when the object to be weighed is a granular material, accurate cutting can be performed without being affected by variations in the amount of the granular material sent out from the supply feeder or the like. Industrial applicability

As is clear from the above description, the weighing mechanism enables high-speed weighing and accurate weighing by arranging a plurality of tiers, and can constitute a high-speed weighing device. As a result, the conventional problem that a large amount of raw material of 15 to 20% is always supplied and that workers must constantly monitor them have been improved, leading to great rationalization. . BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side sectional view of a weighing device according to one embodiment of the present invention. FIG. 2 is a schematic front view showing a vertical relationship of a rotating cylinder of the weighing device. FIG. 3 is a front view showing the relationship between the receiving container and the weighing device. FIG. 4 is a front view of the opening / closing mechanism of the discharge damper. FIG. 5 is a side view of the opening / closing mechanism of the discharge damper. FIG. 6 is a side sectional view of a conventional apparatus for continuously weighing and cutting out powdery and granular materials.

Claims

The scope of the claims

1. A weighing object cut-out mechanism for continuously performing an operation of cutting out and discharging a contained weighing object by a predetermined amount,

A hopper for storing the objects to be weighed,

A plurality of rotating cylinders that are in communication with the discharge section of the hopper, and that are disposed in a plurality of inclined and vertically arranged stages for moving the objects to be weighed discharged from the hopper downward. A mechanism for cutting out the object to be weighed.

2. A weighing device that continuously cuts out the object to be weighed, weighs it, and discharges a predetermined amount.

A hopper for storing the objects to be weighed,

A plurality of rotating cylinders that are in communication with the discharge portion of the hopper and that are arranged in a plurality of inclined and vertically arranged stages for moving the objects to be weighed discharged from the hopper downward;

A receiving container that includes a discharge damper and temporarily stores an object to be weighed cut out from the rotary cylinder;

A weighing device comprising a chute for discharging a predetermined amount of the weighed object discharged from the receiving container downward.

3. The weighing device according to claim 2, further comprising a weigher for weighing the object to be weighed put into the receiving container.

4. The motor according to claim 3, further comprising a motor mechanism configured to reduce the rotation speed of the rotary cylinder when a measurement signal from the weigher approaches a target value. Weighing device.

5. The weighing device according to any one of claims 2 to 4, wherein the hopper has at least a plurality of discharge portions arranged in a plurality of stages in a vertical direction.

6. The weighing device according to claim 5, wherein the hopper has a plurality of discharge portions arranged in a plurality of rows.

7. The weighing device according to claims 2 to 6, wherein the objects to be weighed are powdered and granular materials.