JPS6345215B2 - - Google Patents

Description

Detailed Description of the Invention The present invention relates to a cutter used in various cooking machines such as mixers, and by changing the shape of the blade of the cutter, the cutting performance is improved and power consumption is reduced when incorporated into the equipment. , which reduces noise during operation.

An embodiment of the present invention will be described below with reference to the accompanying drawings. The figure shows a mixer. 1 is a motor, 2 is a main body with a built-in motor 1 and a back plate 4 fitted with legs 3 at the bottom, 5 is a motor shaft, and a lower connector 6 is arranged at the top. are doing. Reference numeral 7 denotes a tip stand, on which a tip 9 with a tip lid 8 removably fitted is disposed. An oil-less bearing 10 is provided in the center of the tipping table 7, and a cutter 11 bent at two places in the center for a mixer is fixedly formed on the upper part of the cutter 10, and an upper connector 12 is arranged at the lower part of the cutter. The main shaft 13 is rotatably inserted.

The tip 7 is removably fitted into a rib 14 protruding from the main body 2. Further, the lower connector 6 and the upper connector 12 are fitted to each other, and the rotation of the motor 1 is transmitted to the cutter 11 for the mixer via the motor shaft 5 and the cutter main shaft 13 to cut and crush the material input into the pot 9. .

The cutter 11 described above is formed into a plate shape from stainless steel, and its blade portion 11'
The shape is formed by cold rolling a straight section a at the tip and a smooth curved section b connected thereto, and then pounding the cutting edge with a press to form a sharp cutting edge.

Uses commonly used materials, consumes less power,
In order to cut and grind efficiently with low noise, it is necessary to improve the characteristics of the motor by increasing the rotation speed of the mixer cutter, increase the length of the cutter blade, or reduce the cutting resistance. To prevent this, countermeasures have been taken, such as making the cutting edge of the cutter sharp. However, improving the characteristics of the motor and increasing the overall length of the cutter increases power consumption and adversely affects the temperature rise of the motor. In addition, if the cutter's cutting edge is made sharp, there will be a problem that the cutting edge will curl or bend when grinding hard materials such as soybeans and coffee beans. Therefore, in consideration of the above-mentioned problems, the current state of the art is to form the blade portion into a shape as shown in FIGS. 5 and 6 by grinding.

On the other hand, in the cutter according to the embodiment of the present invention, since the curved part b of the blade part is formed by rolling,
The hardness of the cutting edge is improved (conventionally it was HV400, the cutting edge hardness of the cutter in the example was HV600), and the wear resistance and strength are improved. The relationship between the rotating cutter and the liquid is shown in FIGS. 4 to 6, and the fluid resistance of the conventional cutter is greater than that of the conventional cutter. In other words, in the conventional cutter shown in Figures 5 and 6, a vortex is generated in the wake due to the cross-sectional shape, the pressure decreases, and the pressure resistance (shape resistance) that the cutter receives from the fluid in the direction of rotation increases. . Furthermore, the frictional resistance related to the surface roughness of the blade portion is also smaller in a rolled cutter than in a conventional polished cutter. These things are
The load on the motor is low, the rotational speed is increased even with a motor with the same characteristics, the power consumption is low, material can be cut and crushed efficiently, and the noise during equipment operation is low. Moreover, compared to the conventional individual polishing operations, continuous cutting by rolling leads to a significant cost reduction.

In this way, the cutter of the present invention improves cutting performance by simply providing a smooth curved portion on the blade, and in the case of mixers, etc., it reduces power consumption and noise during operation. It has an excellent effect. Furthermore, if the blade part is formed by plastic working and the cutting edge is pressed, the hardness will increase and at the same time it will become sharper, making it possible to effectively crush hard materials, which is an excellent effect not seen in the past. It will be done.

Furthermore, since the hardness of only the cutting edge is increased and the hardness of the central part of the cutter is not increased, it has the effect that the shape of the central part of the cutter can be changed.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a mixer using a cutter according to an embodiment of the present invention, Fig. 2 is a plan view of a cutter showing the same embodiment, Fig. 3 is a sectional view of the blade of the cutter, and Fig. 4 is a sectional view illustrating how the cutter is used, and FIGS. 5 and 6 are sectional views illustrating how the conventional cutter is used. 11... Cutter, 11'... Blade portion, a... Straight portion, b... Curved portion.

Claims (1)

[Claims] 1. A cutter for a cooking machine whose blade part is formed by plastic processing into a straight part at the tip and a smooth curved part connected to the straight part, and which is also bent.