JPH0719943A - Weighing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a weighing machine capable of accurately measuring the dispensing amount of powder while receiving the total weight of raw materials in a container. [Structure] A first rod 22 whose one end is connected to an underframe 19 by a fulcrum metal fitting 27, and a balance-like supported on a fulcrum 24 on the underframe 19 and the other end of the first rod 22 on one side of the balance. The second lathe 2 including the interlocked second lathe 23 and the loading platform 21 suspended at the priority position of the first lathe 22.
3, a load cell for measuring the load applied to the loading platform 21 is attached to the side interlocking with the other end of the first lapping rod 22, and the loading platform 21 is opposite to the interlocking side of the second lapping rod 23. A canceling device was installed to cancel the load applied to.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing machine for measuring raw materials such as powder and liquid dispensed from a container.

[0002]

2. Description of the Related Art For example, a bulk transportation system for raw material powder such as wheat flour is delivered to a bakery or the like by a lory truck of about 10 tons, and is put into a large storage tank by an air transportation system for storage. When used, it is dispensed using, for example, a 25 kilogram 1 batch small hopper scale. The dispensed powder is sent to a mixer by an air transportation system, hot water is pumped in, and yeast etc. are weighed and mixed to form a dough. On the other hand, noodle makers and confectioners who use a small amount often use a bag containing 25 kg.

In recent years, rationalization has become necessary not only in large factories but also in small factories, and there is a high intention to use raw material powder in bulk instead of bagging. The current bulk system is a lorry vehicle 1
Since the transaction is done on a stand-by-unit basis, a storage tank for loading about 20 tons of raw material powder is required, but this is expensive and requires a large installation space, large equipment, and a large investment amount. Therefore, a small-scale business operator installs a small-sized storage tank made of cloth, for example, which can store about 1 ton of raw material powder, and dispenses it from here. For this reason, a dispenser weighing machine is required. If the weighing machine is placed under a small storage tank and the weight of the storage tank is reduced, the space can be saved greatly and it can be used by small businesses. However, the actual weight to be weighed is orders of magnitude smaller than the total weight of the raw material powder.
Since the dispensing amount is 0 kilogram, there is a problem that such a weighing machine cannot accurately measure the dispensing amount.

The present invention has been made in view of the above points, and a weighing machine capable of accurately measuring the dispensing amount of the raw material while receiving the total weight of the raw material put in the container, that is, the total weight applied to the weighing machine is large. Also, 1/100 to 1/200 of that
It is an object of the present invention to provide a weighing machine that accurately measures a small weight.

[0005]

In order to solve the above-mentioned problems, the present invention provides a container in which the contents of powder and liquid contained in a container are used as a load together with the container, its contents and its structure. It is characterized in that a weight commensurate with the weight of the member is balanced inside the weighing mechanism, and the increase or decrease of the discharged or charged contents is weighed as an unbalanced amount.
Also, a first rod having one end connected to the underframe by a fulcrum metal fitting, and a second rod having one end of the balance supported by a fulcrum on the underframe in a balance-like manner and the other end of which is interlocked. A load cell for measuring a load applied to the loading platform on the side of the second lapping rod that is interlocked with the other end of the first lapping rod, including a loading platform suspended at an important position of the first lapping rod. Installation,
Further, a canceling device for canceling a load applied to the loading table is attached to a side opposite to the interlocking side of the second lever.

In the present invention, for example, in a system for discharging powder from a storage tank, the total amount of a small storage tank, a discharge machine, a transport machine and contents is 2-3 tons. On the other hand, the amount to be dispensed and supplied is about 25 to 50 kg as one measured value, which is about 1/100 of the total weight. Therefore, if the same weight as the total weight is balanced on the balance inside the weighing machine and only the amount reduced by discharge is weighed, it is 25 to 50.
It is possible to accurately measure the weight equivalent to the weighing of about kilogram.

Since the weighing machine moves to the final end of the display unit or the load cell by a lever such as a ladle, and the force is reduced, a balance weight such as a weight is provided in the vicinity of the end of the lathe, so that the actual weight is reduced. It can be balanced with far less weight.

The display method of the scale may be electric such as a load cell or mechanical such as dial display. The small storage tank discharge system is all automatic, so the load cell method is preferable because it controls the microcomputer. What is required for the weighing machine can be a transportation machine such as a storage tank, a discharge machine, and a mixing machine.

[0009]

[Function] Although the weight of the storage tank, the discharging machine, the transportation machine, etc. and the total weight of the powder in the storage tank act on each other, these weights are canceled by the cancel device, and only the weight of the raw material dispensed from the storage tank Can be measured accurately.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings.

FIG. 4 is a system diagram in which the weighing machine of the present invention is used in a noodle making factory.

In FIG. 4, the bagging raw material powder 1 is manually emptied into a hopper 2, and is fed into a small cloth-made storage tank 6 through a screw conveyor 3 and high-pressure air supplied from an air source 4 through an air transportation system 5. To be done. The powder in the small storage tank 6 is charged into the mixer 11 via the air transportation system 9 by the discharging machine 7 for discharging the powder from the storage tank and the mixing machine 8 connected to the air source 4 for pneumatic transportation. Container 12
The saline solution is stirred by the stirrer 13 and sent to the noodle mixer 11 by the pump 16 through the flowmeter 14. After kneading, it is discharged in the arrow direction by the discharging device 15 and sent to the noodle rolling process.

With the weighing machine 10, the amount of powder to be fed into the mixer 11 is controlled by the control panel 17 connected to the indicator 16. The storage tank 6 containing the charged powder, the discharge machine 7, and the mixing machine 8 for pneumatic transportation are mounted on the weighing machine 10, but are connected to the transportation air pipe by a flexible pipe.
Further, the weighing machine 10 has a load cell scale as another independent mechanism and can display the weight held in the storage tank on the display panel.

When measuring the weight to be dispensed, as described below, the weight or the like corresponding to the applied load is operated in the weighing machine so as to balance with the total applied load. That is, the output of the load cell is adjusted to be substantially zero. The measuring range of the load cell is 0 to 100 kilograms. In this state, move the ejector and transport machine to eject the powder,
Weigh, transport and continue until a predetermined amount, for example 25 kilograms (which is preset). The ejector is controlled so as to stop when it reaches a predetermined value.

As an example, a weighing machine used in the present system for accurately measuring the dispensed weight while receiving the total load is shown in FIGS.
Will be described.

FIG. 1 is a plan view of the weighing machine of the present invention, and FIG. 2 is a side view of the weighing machine.

In the weighing machine shown in FIGS. 1 and 2, the first frame is provided below the underframe 19 supported by the leveling foot 18.
One end of the first ladle 22 is connected with the fulcrum suspension fitting 27 as a fulcrum. The lower end of the first weight suspending metal fitting 28 fixed to the lower part of the first rod 22 is connected to a loading base load connecting metal fitting 35 connected to the loading base 21 via the middle frame 20. The loading platform 21 is attached to the upper part of the middle frame 20, and the storage tank 6, the discharger 7, the mixing machine 8 and the like are placed on the loading platform 21. The other end of the first rod 22 is connected to the second rod 23 by first and second rod connecting fittings 26. A fulcrum (edge) 24 of the second lever 23 is swingably supported by the underframe 19.

The load cell 34 is connected to the second by the connecting fitting 33.
The lever 23 is connected to one side of a fulcrum 24 thereof.
On the other hand, a weight 30 is attached to the second rod 23 on the opposite side of the fulcrum 24. In other words, the load cell 34 and the weight 30 are attached to the arms on both sides of the fulcrum 24 of the second lever 23, which is a balance, in a balanced relationship. The weight 30 is mounted on the second lever 23, is rotatably fitted to a screw shaft 31 which is rotatably supported, and the second rod 23.
It is attached so as not to rotate above and to slide, and is configured such that when the screw shaft 31 is rotated by the motor 32, the screw shaft 31 approaches or separates from the second lathe rod 23. Also, storage tank 6
The weight 30 is moved to a position where it can be canceled in balance with the load on the weighing machine including the raw material powder inside, that is, the weight of the storage tank 6, the powder in the storage tank 6, the discharge machine 7, the mixing machine 8 and the like. Then, the display of the load cell 34 is almost zero.

The weighing machine having the above structure operates as follows.

FIG. 3 is a diagram for explaining the operation of the weighing machine.

In FIG. 3, when the powder in the storage tank 6 on the loading platform 21 is dispensed by, for example, 100 kilograms, the loading platform 21 rises, and the middle frame 20 and the loading platform load connecting fitting 35.
After that, the first ladle 22 is lifted by the first weight suspension fitting 28. Therefore, the other end of the first sludge rod 22 rises with the first fulcrum suspension fitting 27 as a fulcrum, and the first and second sludge connecting fittings 26
Also rises. As a result, the second lever 23 is tilted about the fulcrum 24, and the load cell 34 is operated through the connecting fitting 33. Therefore, the weight of the powder dispensed from the storage tank 6 is displayed as 100 kilograms. Therefore, the motor 32 is operated to rotate the screw shaft 31 to move the weight 30, and the weight is balanced with the total load including the remaining amount of powder to restore the initial state. By repeating this operation, the weight of the powder dispensed from the storage tank 6 can be accurately measured. The weight 30 may be moved in advance so as to correspond to the amount of dispensing, and the weight 30 may be balanced when discharged by a predetermined amount.

In the above-mentioned embodiment, the method of adjusting the balance by moving the weight on the rod by using the motor is adopted. However, even if it is not such a method, the elastic force of a spring or the like or the electric force of the spring or the like is used on the weighing mechanism. You can use the power to balance the handle.
Further, although the balance is taken on the second lathe, that is, the balance weight is taken at the final end, it does not always have to be at the final end. Needless to say, the first rod may be structurally sufficient.

[0023]

As described above, the weighing machine of the present invention has a first lathe having one end connected to the underframe by a fulcrum fitting, and a balance supported on the underframe at the fulcrum on one side of the balance. It includes a second rod with which the other end of the first rod is interlocked, and a loading platform suspended at a critical position of the second rod, and is interlocked with the other end of the first rod of the second rod. A load cell for measuring the load applied to the loading platform is attached to the side, and a device for canceling the load applied to the loading platform is attached to the opposite side of the side of the second lathe that interlocks with the other end of the first lathe. Therefore, even if the weight of the container, etc. and the total weight of the powder in the container act on the loading platform, these weights are canceled by the canceling device, and the weight of the raw material dispensed from the storage tank is corrected each time. The excellent effect of being able to weigh is obtained. Further, due to such a structure and operation, even if the weight of the container and the contained raw material is larger than the amount to be dispensed, the amount to be dispensed while being placed on the weighing machine can be accurately weighed.

[Brief description of drawings]

FIG. 1 is a plan view of a weighing machine of the present invention.

FIG. 2 is a side view of the weighing machine of the present invention.

FIG. 3 is a diagram for explaining the operation of the weighing machine of the present invention.

FIG. 4 is a system diagram in which the weighing machine of the present invention is used in a noodle making process.

[Explanation of symbols]

 1 Powder 6 Storage Tank 7 Discharge Machine 8 Mixing Machine 10 Weighing Machine 19 Underframe 21 Loading Platform 22 1st Ladle 23 2nd Ladle 24 Support Point 27 Support Point Metal 30 Weight

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Kazuhiro Tatara 3-14-16 Nishi-Tenma, Kita-ku, Osaka City, Osaka Prefecture Nisshin Engineering Co., Ltd. Osaka Sales Office (72) Inventor Kazuhisa Handa 3-Nishi-Tenma, Kita-ku, Osaka City, Osaka Prefecture 14-16 Osaka Sales Office, Nisshin Engineering Co., Ltd. (72) Inventor Shoji Kitada 9-9-4, Tsukiji Minamihama, Amagasaki City, Hyogo Prefecture

Claims (3)

[Claims] 1. In a balance in which the content of powder or liquid contained in a container or the like is used as a load together with the container, a weight commensurate with the weight of the container and its contents and its structural members is balanced inside the weighing mechanism. In this way, the weighing machine is characterized by weighing the increase or decrease of the discharged or input contents as an unbalanced amount. 2. A first rod having one end connected to the underframe by a fulcrum metal fitting, and a first rod supported on the underframe in a balance-like manner at a fulcrum, and the other end of the first rod interlocked with one side of the balance. In order to measure the load applied to the loading platform on the side of the second lapping rod interlocking with the other end of the first lapping rod, which includes two lapping rods and a loading platform suspended at an important position of the first lapping rod. Weighing machine, and a canceling device for canceling a load applied to the loading table is attached to the opposite side of the interlocking side of the second ladle. 3. The weighing machine according to claim 2, wherein the canceling device is a weight that can approach or move away from the second ladle.