JP2650916B2 - Pressurized contact method between rotating blade iron and wet material - Google Patents

Description

The present invention relates to concrete, mortar, other non-solid,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure contact method between a rotary blade iron and a wet material for the purpose of flattening the surface of a non-liquid substance or material (referred to as a wet material).

(Prior Art) Conventionally, a power plastering machine employs a rotating blade ironing method in which a plastering iron is rotated about a rotation axis by power.

The rotating blade iron system is known to have a structure in which a rotating shaft is vertically provided at a central portion of a support body, and three to five rectangular blade irons are radially protruded at a lower end portion thereof at a predetermined contact angle. .
Also, the support arm protruded laterally from the support body, a rotating shaft was vertically installed at the tip of the support arm, and three to five rectangular blade irons were radially protruded at the lower end thereof at a variable contact angle. The structure was also known.

(Problems to be Solved by the Invention) Since all of the conventional rotary blade irons are substantially rectangular flat plates, the speed of the iron at the contact portion with the wet material gradually increases as the distance from the rotation axis increases, and the material becomes soft. When padding, stickiness on the material surface to the iron increases, and it is difficult to obtain a smooth finished surface at the tip of the iron, and on the side close to the rotation axis, that is, the part finished with the iron face at the base end, on the contrary, the stickiness is small. As a result, the finished surface becomes smooth, and it is difficult to obtain a uniform smooth surface.

In other words, the wet material is considered to have the best speed for the coating finish depending on the composition, the amount of water added, and other differences.However, when a rotating blade iron is used, the best speed is obtained by setting the middle portion of the blade iron to the best speed. The speed was slower at the proximal end and faster at the distal end, making the best adjustment practically difficult. In addition, even if a good finish surface is obtained at the center of the power machine, the power machine moves, so that part is outside the iron,
In other words, the end portion becomes more viscous again, and the finished surface eventually becomes rough.

(Means for solving the problems) However, as a result of research on the relationship between wet materials and iron speed, the properties of wet materials that have not yet been solidified have been found to vary between iron speed and iron angle, and between material stickiness and holding resistance. It has been found that there is a compensation effect.

Therefore, if the iron angle is increased or decreased in response to changes in speed,
Even when a rotary blade iron is used, a good smooth finished surface can be obtained, and the above-mentioned conventional problems have been solved.

Furthermore, the contact area is increased so that the center part of the power machine, that is, the base end of the iron, can be pressed well and finished smoothly, and the tip of the iron is effective and the stickiness is small, the contact area is small, and the material surface is reduced. By doing so, the finished surface is now a smooth surface and the power machine is separated from its finished surface.

That is, the present invention provides a rotary blade iron of a power machine in which the blade iron makes a circular orbit, in which the contact area between the lower surface of the rotary blade iron and the upper surface of the wet material is made to be in inverse proportion to the distance from the center of rotation. The contact angle between the rotating blade iron and the wet material was completed by making the contact angle of the wet material with the surface of the wet material proportional thereto.

In the above, the power machine is a robot machine or a human-powered mobile machine. The robot machine possesses an artificial brain and performs plastering work and other surface smoothing work by rotating a rotary feather iron while moving based on a radio command from the outside world. In addition, the human-powered mobile machine is a machine that moves the main body by human power, but has a structure in which the rotating blade iron is rotated by power. In the robot machine, the robot plastering machine has a structure having an ironing device in the center of the main body, a structure in which an arm rod is extended from the main body, and an ironing device is installed at the tip of the arm rod, and a moving device, There are three known configurations in which a plastering machine is connected to this, but the present invention can be applied to any of them. The robot plastering machine has separate driving devices for driving the ironing device and driving the main body, and can be operated separately, and the power reduction is one, and the transmission mechanism is different. It may be a system.

The wet material in the present invention is a plaster material such as cement system, gypsum system, lime system, structural component material such as concrete or butter, cheese, cream, other food materials, or clay, soil and the like handled in other industries. And collectively refers to non-solid, non-liquid substances or materials.

Accordingly, the blade iron of the present invention is mainly used for plastering materials and for forming flat surfaces such as concrete, but can also be used for other manufacturing industries.

(Operation of the Invention) In the present invention, the contact area between the rotary blade iron of the power machine and the wet material is inversely proportional to the linear velocity of each part. Since the contact area is large at the base end portion (inside) where the speed is relatively slow, the surface finish of the wet material can be made substantially uniform.

(Embodiment) Next, an embodiment of the present invention will be described with respect to a plastering iron.

Base arms 2a, 2a are provided radially and equidistantly at the lower end of the rotating shaft 1, and the base ends of the support arms 2, 2 are connected to the ends of the base arms 2a, 2a at an angle, respectively. The blade irons 3 and 3 are fixed to 2 and 2, respectively. The mounting angles of the base arms 2a, 2a and the support arms 2, 2 may or may not be adjustable. The wing irons 3 and 3 are trapezoidal in plan view, and the base end of the wing iron is widened and the front end is narrowed. The feather iron 3, 3
Is in contact with the wet material by being inclined upward with respect to the surface of the wet material in the rotation direction, and the contact angle of the iron increases toward the tip. The contact angle between the rotary blade iron and the wet material is variable. This angle depends on the properties of the plaster material that has not yet set, but the contact angle difference θ between the lower surface of the base end edge of the blade iron and the lower surface of the tip side edge of the wet material surface exceeds 0 degrees and is 90 degrees. Is less than. Although the angle is changed in order to make the relationship between the speed of the blade and the contact area inversely proportional and to adjust the stickiness of the material and the holding resistance, the shape of the blade does not necessarily need to be trapezoidal. As shown in FIG. 2, it is sufficient that the contact area in the radial direction decreases as the distance from the rotation axis increases.

In the above embodiment, when the rotating shaft 1 is rotated in the direction of arrow 4, each of the blade irons 3, 3 also rotates in the same direction to press and smooth the surface of the wet material. It is in contact with the wet material at the hatched portion in FIG. Therefore, the base end (part A) of the blade iron comes into contact with a relatively large area, and the front end (part B) comes into contact with a relatively small area. And a good surface finish can be finally obtained at the tip of the iron.

(Effects of the Invention) According to the present invention, the contact area of the rotating iron with the wet material is made to be inversely proportional to the linear velocity of the blade iron. As a result, it is possible to come into close contact with the conditions suitable for the manual ironing work of the technician, which has the effect of enabling the surface finish to be uniformly smoothed.

[Brief description of the drawings]

FIG. 1 is a plan view showing the relationship between the rotating shaft and the blade iron of the present invention, FIG. 2 is an explanatory diagram showing the change in the contact area of the blade iron, and FIG. 3 shows an example of the blade iron of the present invention. It is a perspective view. 1 ... rotating shaft 2 ... support arm 3 ... feather iron

Claims (4)

(57) [Claims] 1. A rotating blade iron of a power machine in which the blade iron follows a circular orbit, wherein a contact area between a lower surface of the rotating blade iron and an upper surface of a wet material is made inversely proportional to a distance from a center of rotation. Pressurized contact method between rotating blade iron and wet material 2. The method of claim 1, wherein said power machine is a robot machine or a human-powered mobile machine. 3. The method according to claim 1, wherein the contact area is adjusted by changing the width of the rotary blade iron and changing the contact angle. 4. The method according to claim 2, wherein said robot machine comprises a rotary blade ironing device and a device for supporting and moving said rotary blade ironing device.