JPS6219188Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial application field> This invention softens the tissue of tea leaves while
This invention relates to a tea grinder for evaporating water, and particularly to a swinging device for a spatula for kneading tea leaves.

<Prior Art> Generally, a tea processing machine and a spatula swinging device used therein have a configuration shown in FIG. 2.

That is, a cylindrical bottom plate 2 made of woven bamboo material adhered to the inner surface of a sheet metal material is provided at the upper part of the machine frame 1, which is framed in a box shape. form.

A hot air supply section 4 is provided at the upper rear side of the coarse chamber 3.
Furthermore, an inlet 5 for supplying tea leaves and an outlet 6 for taking out tea leaves are provided at the front surface of the top plate and the lower part of the bottom plate 2 of the roughening chamber 3, respectively.

A prismatic rotating shaft 7 is installed in the coarsening chamber 3 located at the axial center of the bottom plate 2, and a leaf scraper 8 and a spatula 9 are attached to the rotating shaft 7.

The spatula 9 is formed by bending a thick sheet metal material into a wave shape, and the base end 9a, that is, the end in the direction in which the rotating shaft 7 rotates, is bent toward the opposite rotational direction of the rotating shaft 7. The lower end 1 of the L-shaped swinging arm 10
It is integrally connected to 0a by a fastener 11 made of bolts and nuts. The swinging arm 10 is rotatably supported by a pin 12a at the tip of a support arm 12 whose bent portion 10b is protrusively fixed to the rotating shaft 7, and whose upper end 10c is elastically engaged with the support arm 12 by a spring mechanism 13. It was configured to stop.

The tea processing machine configured as described above feeds tea leaves from the input port 5 and supplies hot air from the hot air supply section 4 into the coarsening chamber 3, while grinding the leaves through the rotating shaft 7. Then, rotate the spatula 9 to the right as shown by arrow A, thereby steaming the tea leaves in the roughening chamber 3 while pressing the tea leaves into the coarsening chamber 2 with the spatula 9 and stirring the tea leaves with the leaf scraper 8. The tea leaves are repeatedly coarsened to a predetermined size.

During the coarse operation, depending on the quantity or quality of the tea leaves stored in the coarse coarse chamber 3,
The load applied to the spatula 9 will change.

The spring mechanism 13 operates to adjust to this change in load by moving the spatula 9 closer to or farther from the base plate 2 .

However, since the conventional swing arm 10 is bent into an L-shape, it has a complicated shape and is difficult to manufacture.

Furthermore, the spring mechanism 13 passes through the support arm 12 from the upper end 10c of the swing arm 10 to the spatula 9.
a spring guide rod 13a extending in the direction;
A compression coil spring 1 is attached to this spring guide rod 13a.
3b is inserted and its both ends are locked to the support arm 12 and the tip of the spring guide rod 13a, so when the spring mechanism is activated, the compression coil spring 13b and the spring guide rod 13a are deflected in the lateral direction and the support There was a drawback that the swinging arm would not be able to perform smooth swinging motion due to buffering with the arm.

<Problem that this device aims to solve> The object of this device is to obtain a spatula swinging device that is easy to manufacture and has smooth swinging action, by making the swinging arm a simple rod shape and by interposing a spring mechanism between the lower part of the swinging arm and the rotating shaft part.

<Means for Solving the Problems> In order to achieve the above object, the present invention is characterized by the following configuration.

That is, a rotating shaft is provided at the axial center of the semi-cylindrical bottom plate, a support arm extending radially outward is fixed to the rotating shaft, and the rotating shaft is attached to the outer end of the supporting arm. A swinging arm extending outward in a counter-rotation direction is swingably connected, a spring mechanism is provided between the swinging arm and the rotating shaft, and an outer end of the swinging arm is screwed together. It is characterized by having a configuration in which spatulas are provided facing each other along the bottom plate.

<Function> Since the present invention has the above configuration, the swinging arm is
There is no need for a portion that extends upward from the support arm on which it is supported, and it can be made into a straight bar shape.

Furthermore, since the spring mechanism is interposed between the swinging arm and the rotating shaft, the spring mechanism does not buffer against the support arm during operation, and the swinging arm, and thus the spatula, always swing smoothly. become.

<Example> Hereinafter, an example in which the above configuration is embodied will be described based on the drawings.

FIG. 1 is an enlarged side view of a main part of an embodiment according to the present invention, in which a support arm 12 is made to protrude leftward, that is, radially outward, from a rotating shaft 7 and is fixed with a bolt 12b.

A swing arm 10 is attached to the outer end of the support arm 12.
are swingably connected by a pin 12a.

The swinging arm 10 is made of a straight rectangular tube, and its upper end is swingably connected by the pin 12a, and a spatula 9 is integrally attached to the lower end, that is, the outer end of the swinging arm 10. Installed.

The spatula 9 is bent into a waveform in side view, and has a flat leg 9a fixed upright at its left end, that is, the end on the advancing side, and the middle part of the leg 9a and the right end, that is, the opposite end of the spatula 9. It has a reinforcing stay 9b that is fixed across the frame.

Then, the leg 9a is fitted to the outer end of the swing arm 10 and fastened with bolts and nuts 11, thereby detachably attaching the spatula 9 to the swing arm.

Further, the intermediate portion of the swing arm 10 and the rotation shaft 7
A spring mechanism 13 is interposed between the two parts.

That is, in the spring mechanism 13, the base end of the spring guide rod 13a is rotatably connected to the swing arm 10 by a pin 13c, and the spring guide rod 1 is attached to a metal fitting 13d fixed to the rotating shaft 7 side and protruding rightward.
A compression coil spring 13b is fitted into the spring guide rod 13a, and one end thereof is in contact with the base of the spring guide rod 13a, and the other end is in contact with the metal fitting 13d.

In addition, 13e is a spring receiver, and 13f is a stopper, which prevents the spring guide rod 13a from coming off from the metal fitting 13d.

According to the above embodiment, the spatula 9
When the tea leaves rotate in the direction of arrow A, the tea leaves are squeezed between the spatula 9 and the bottom plate 2, and a load is applied to the spatula 9.

When the load exceeds a predetermined value, the spatula 9 moves the swing arm 1 against the reaction force of the spring mechanism 13.
0, it rotates in the opposite direction of the arrow about the pin 12a and moves away from the bottom plate 2, thereby reducing the load applied to the spatula 9.

In this case, in the spring mechanism 13, since the pin 13c moves in an arc around the pin 12a, the base end of the spring guide rod 13a will swing slightly around the metal fitting 13d; Pin 13 is on the proximal end side where the amount of movement is large.
Since the distal end side, which is rotatably supported by c and has a small amount of rocking, is loosely fitted and supported by the metal fitting 13d, the rocking is smooth.

Further, since the side end portion of the compression coil spring 13b, which swings a large amount, is supported by the spring guide rod, the compression coil spring 13b can smoothly expand and contract without being biased with respect to the spring guide rod.

Therefore, when a load of a predetermined value or more is applied to the spatula 9, it smoothly moves toward and away from the bottom plate 2, and no overload is applied to the spatula 9.

<Effects> As is clear from the above embodiments, according to the configuration of the present invention, the swinging arm supporting the spatula is made into a straight shape, making it easy to manufacture, and the swinging motion becomes smooth, allowing the spatula to This has the effect that overload does not occur and damage to the product can be prevented.

[Brief explanation of the drawing]

FIG. 1 is an enlarged side view of essential parts showing an embodiment of the present invention, and FIG. 2 is a side sectional view of a tea processing machine. 1... Machine frame, 2... Base plate, 3... Rough chamber, 4... Hot air supply section, 5... Inlet, 6...
Outlet port, 7... Rotating shaft, 8... Leaf scraping, 9...
Spatula, 10... Swing arm, 11... Bolt/nut, 12... Support arm, 12a... Pin, 1
3... Spring mechanism, 13a... Spring guide rod,
13b...Compression coil spring, 13c...Pin, 1
3d...Metal fittings, 13e...Spring receiver, 13f...
Stotspa.

Claims (1)

[Scope of utility model registration request] A rotating shaft is provided at the axial center of the semi-cylindrical kneading bottom plate, a support arm extending radially outward is fixed to the rotating shaft, and a support arm extending radially outward is fixed to the outer end of the supporting arm in the counter-rotational direction of the rotating shaft. A swinging arm extending outward is swingably connected, a spring mechanism is provided between the swinging arm and the rotating shaft, and a spring mechanism is provided at the outer end of the swinging arm along the bottom plate. A spatula swinging device in a tea processing machine, which is equipped with spatulas facing each other.