JP2000184855A - Control of rubbing machine of green tea manufacturing and rubbing machine of green tea manufacturing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide both a method for efficiently rubbing tea leaves by properly applying pressure to the tea leaves and an apparatus capable of continuously and clearly knowing pressure applied to the tea leaves. SOLUTION: In a method for controlling a rubbing machine for green tea manufacturing, pressure applied to tea leaves is measured and a weight is moved based on the measured value. Pressure applied to the tea leaves 3 can be continuously watched by a numerical value, an operator can readily understand it and easily use it for control afterward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a tea making machine and a device therefor.

[0002]

2. Description of the Related Art A tea making and kneading machine is configured to put tea leaves into a cylindrical kneading drum having a circular bottom on a kneading machine and circularly move the tea leaves in the kneading drum with a pressing lid. Thus, the kneading action is performed by applying the kneading pressure. In order to apply pressure to the pressure lid, a method of placing a weight on the pressure lid and pressing the weight with the weight of the weight, and a method of pressing the pressure lid against tea leaves with a screw screw are used. The former is performed with a kneading machine for green tea, and the latter is performed with a kneading machine for black tea. In either method, the measurement of the pressing force applied to the tea leaves during the kneading operation and the control of the pressing force and the rotation speed of the kneading drum based on the measured value are not performed.

[0003]

In the kneading step, while applying pressure to the tea leaves, the dried tea leaves and the wet tea leaves are mixed to make the degree of drying between the tea leaves uniform. In addition, the water inside the tea leaves is extruded to the surface by the pressing force, and the surface and the inside water of each tea leaf are made uniform and the fibers are further softened. In the production of green tea, it is possible to eliminate uneven drying of the tea leaves dried by the rough kneading operation in the previous step and to facilitate the next middle kneading operation. In the black tea process, the tea leaves that have undergone the withering process are softened, so that the withering of the withering is uniform and the fermentation is performed on average. If the power applied to the tea leaves is too strong, the tea leaves may be torn or torn and crushed. Also, if the pressing force is not uniformly applied to the entire tea leaf and the tea leaf is not mixed, a phenomenon occurs in which only a part receives an excessive force and a certain part does not receive the force.

[0004] Evenly applying a proper pressure to the tea leaves in the tea kneading machine affects the quality of the tea product. The pressure on the tea leaves must be changed according to the volume of the tea leaves in the tea kneading machine, the kneading process time, the degree of leaching of the internal moisture to the surface, the properties of the tea leaves, and the like. For these reasons, it is important to continuously and accurately measure the pressure applied to the tea leaves. It is therefore an object of the present invention to provide a method for adjusting the pressure applied to the tea leaves to an appropriate value and performing efficient kneading, and a device capable of continuously and clearly knowing the pressure applied to the tea leaves.

[0005]

The present invention employs the following means in order to solve the above-mentioned problems. (1) In the control method of the tea making machine, the pressing force applied to the tea leaves is measured, and the weight is moved according to the measured value. (2) In the control method of the tea making machine, the pressing force applied to the tea leaves is measured, and the pressure lid is moved up and down according to the measured value. (3) In the control method of the tea making machine, the pressing force applied to the tea leaves is measured, and the rotation speed of the kneading drum is changed according to the measured value.
(4) In the tea kneading machine, the pressure applied to the kneading machine is received by a load cell and measured. (5) In the tea making machine, the pressure of the pressure lid is received by a load cell and measured.

[0006]

The function of the tea kneading machine of the present invention is used to measure the pressing force applied to the tea leaves, and to determine the position of the weight according to the volume of the tea leaves, the kneading process time, the properties of the tea leaves, the degree of leaching of the internal moisture to the surface, etc. Can be moved, the pressure lid can be moved up and down, and the number of rotations of the kneading drum can be changed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a tea kneading machine having a load cell (load measurement sensor) below a kneading machine, and FIG. 2 is a partially cutaway view of a side surface. The tea kneading machine presses the tea leaves 3 in the kneading drum 2 on the kneading machine 1 with the pressing lid 4 to make the tea leaves 3 slightly dry.
Make the water uniform and rub in. The kneading drum 2 is supported on a machine frame 9 by three crank arms 5, and is driven by a motor (not shown) through a rear crank arm 5A.
It rotates on the massaging machine 1. The rotation speed of the kneading drum 2 is changed by this motor. A load cell 6 is provided below the massaging machine 1 to measure a load on the massaging machine 1. A total of four load cells 6 may be provided, one at each of the four corners of the kneading machine 1, or may be provided at any one location (in the case of one location, about 1/1 of the whole).
4). The pressure applied to the tea leaves 3 is changed by moving the weight 8 on the weight rod 7 back and forth. The weight 8 is moved manually or by a motor (not shown) connected to the weight 8.

When the measured value is smaller than the preset pressure, the weight 8 is advanced to increase the pressure, and when the measured value is greater than the preset pressure, the weight 8 is decreased. , The weight 8 is retracted. Also, when the measured value is smaller than the preset pressure, tea leaves may be torn,
In order to increase the kneading action without increasing the risk of tearing, increase the rotation speed of the kneading drum 2 (fast), and when the measured value is greater than the preset pressing force, do not break the shape of the tea leaves. Then, the number of revolutions of the kneading drum 2 is reduced (increased).

FIG. 3 is a partially cutaway front view of the tea making machine in which the pressing means is different from that of the tea making machine of the embodiment described above, and the pressing lid 4 is moved up and down by the motor 11 to apply a load to the tea leaves. .
The pressure lid 4 is connected to a motor 11 and supported by a screw 12. The pressure lid 4 moves up and down by rotating the sprocket 19 by operating the motor 11. 18 is a detent,
A screw is cut on the inner surface of the sprocket 19, and by turning the sprocket 19 meshing with the screw screw 12, the screw screw 12
The screw screw 12 is provided so as not to turn when it moves up and down along the screw on the inner surface 9. When the measured value is smaller than the preset pressure, the pressurizing lid 4 is lowered to increase the pressure, and when the measured value is greater than the preset pressure, to decrease the pressure, The pressure lid 4 is raised. In this type, unlike the type of FIG.
If it is lowered too much, excessive force will be generated, and the machine may be damaged. When the pressure exceeds a certain level in the load cell 6,
The lowering of the pressure lid 4 is stopped.

FIG. 4 is a partially cutaway view of a side of the tea kneading machine in which a load is applied by the weight 8 and the pressing force of the pressure lid 4 is measured by the load cell 13. A load cell 13 is provided below the front end of the weight rod 7, and the pressure applied to the tea leaves 3 is measured by measuring the pressure applied by the pressure lid 4 with the load cell 13. FIG. 5 shows a case in which the pressing force of the pressure lid 4 is measured by a load cell 13 as shown in FIG. In this case, the force applied to the load cell appears as a pulling force (arrow) contrary to FIG. FIG. 6 shows an embodiment in which a load cell 17 is provided below the screw screw 12 that supports the pressure lid 4, and the pressure applied to the tea leaves is measured.

[0011]

According to the apparatus of the present invention, the pressing force applied to the tea leaves can be viewed continuously in numerical values, which is easy for the operator to understand and is useful for subsequent control. Also, by knowing the pressing force applied to the tea leaves, it is possible to further control the pressing force and to change the rotation speed of the kneading drum, so that it is possible to perform control suitable for the tea leaves in the tea kneading machine, and to obtain high quality tea. Products can be.

[Brief description of the drawings]

FIG. 1 is a front view of a tea kneading machine having a load cell below a kneading machine.

FIG. 2 is a partially cutaway view of a side surface.

FIG. 3 is a partially cutaway front view of a tea making machine that presses a pressure lid with a motor.

FIG. 4 is a partially cutaway view of a side surface of a tea kneading machine in which a load cell is provided below a front end of a weight rod.

FIG. 5 is a partially cutaway view of the front of a tea kneading machine that receives a pressing force applied to a pressure lid by a load cell.

FIG. 6 is a partially detailed view of a tea kneading machine in which a load cell is provided below a screw.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Kneading machine 2 Kneading drum 3 Tea leaf 4 Pressure lid 5 Crank arm 6 Load cell 7 Weight rod 8 Weight 9 Machine frame 10 Roller 11 Motor 12 Screw screw 13 Load cell 14 Arm 15 Arm 16 Arm 17 Load cell 18 Detent 19 Sprocket

Claims (5)

[Claims] 1. A method for controlling a tea kneading machine, comprising: measuring a pressing force applied to a tea leaf; and moving a weight according to the measured value. 2. A method for controlling a tea kneading machine, comprising: measuring a pressing force applied to tea leaves; and raising and lowering a pressure lid according to the measured value. 3. A method for controlling a tea kneading machine, comprising: measuring a pressing force applied to tea leaves; and changing a rotation number of the kneading drum according to the measured value. 4. A tea kneading machine wherein a load applied to a kneading machine is received by a load cell and measured. 5. A tea making and kneading machine characterized in that a pressing force of a pressure lid is received by a load cell and measured.