JPH0322983Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a surface finishing device having a pin-shaped cutting blade, and in particular, a surface finishing device that cuts a part to be cut, such as a floor surface, has a plurality of cutting blades. The present invention relates to a surface finishing device having a pin-shaped cutting edge that uses several pins to reduce costs.

[Prior Art] Surface finishing devices are used for polishing and cutting concrete floors, mortar floors, etc. of buildings, and for removing old paint films, as well as for floor cleaning and oil mud removal.

[Problems to be solved by the invention] By the way, in the conventional surface finishing device, a plate-shaped holding member is pivotally attached to the surface finishing device, and the plate-shaped holding member has a cutter made of diamond chips, carbide chips, etc. A plurality of cutter parts each having a blade are attached. In addition, there is also one in which a cutting edge such as a grindstone, a wire brush, or a diamond chip is directly fixed to the plate-shaped holding part.

As a result, when forming the cut portion, expensive diamond chips or carbide chips are used as cutting edges, which increases the cost of the cut portion.
The disadvantage is that it is economically disadvantageous. Also,
The whetstones and brushes mentioned above are cheap, but they wear out quickly.
It has the disadvantage of requiring frequent replacement.

``Purpose of the invention'' Therefore, in order to eliminate the above-mentioned disadvantages, the purpose of this invention is to provide a pin-shaped cutting edge in which the pin-shaped tip is held by a soft holding member, except for the cutting edge, and to hold the pin-shaped cutting edge. A cutter portion is provided, which is inserted into each of the plurality of holes of the holding plate, and the large diameter head of the pin-shaped cutting blade is held by the holding plate and the holding member, and the cutter portion is inserted between the holding plate and the holding member of the cutter portion. By providing a space inside which is filled with fluid and allows the pin-shaped cutting blade to move forward and backward according to the uneven shape of the part to be cut, it can be used as a cutter for surface finishing equipment that performs cutting work on parts to be cut, such as floors. It is an object of the present invention to provide a surface finishing device having a pin-shaped cutting edge that can be formed at a low cost, is economically advantageous, and can be manufactured very easily by simplifying the configuration of the cutter portion.

[Means for solving the problem] In order to achieve this purpose, this invention has a plurality of cutter parts each having a plurality of pin-shaped cutting edges attached to a predetermined part and driven to rotate to cut the surface of the part to be cut. In a surface finishing device having a pin-shaped cutting blade that performs cutting, the pin-shaped cutting blade is provided with a part other than the cutting edge of the pin-shaped chip buried and held by a soft holding member,
The pin-shaped cutting blades are inserted into the plurality of holes of the holding plate, and a cutter part is provided in which the large-diameter head of the pin-shaped cutting blade is held by the holding plate and the holding member. The present invention is characterized in that a space is provided between the holding plate and the clamping member, the interior of which is filled with fluid and allows the pin-shaped cutting blade to move forward and backward in accordance with the uneven shape of the part to be cut.

[Operation] By configuring as described above, the part to be cut,
For example, when cutting a floor surface, multiple pin-shaped cutting blades are brought into contact with the floor surface, and the surface can be reliably cut according to the uneven shape of the part to be cut, and the cutter part can be made at a low cost. By forming it into a shape, it is economically advantageous.

[Example] Hereinafter, an example of this invention will be described in detail based on the drawings.

1 to 7 show examples of this invention. In FIG. 3, 2 is a surface finishing device, 4 is a caster, 6 is a weight, 8 is a drive unit, 10 is a dust collector, 12 is an operating handle, and 14 is a switch. At the bottom of the weight 6 of the surface finishing device 2, a fourth
As shown in the figure, a plate-shaped holding part 16 is rotatably mounted, and a rubber skirt part 18 is provided to surround this plate-shaped holding part 16 so as to be movable up and down.

Further, the plate-shaped holding portion 16 includes second, fourth, and fifth portions.
As shown in the figure, a plurality of cutter portions 22, for example three cutter portions, each having a plurality of pin-shaped cutting edges 20 made of carbide.
is attached so that it can swing. In other words, this cutter part 2
2 consists of a cutting blade 20, a disc member 24, which is a holding plate, formed into a disc shape, for example, and a shaft portion 26, and as shown in FIGS. 1 and 6, a plurality of holes are formed in the disc member 24. The pin-shaped cutting blade 20 is inserted into this hole 28 from above, and the cutting edge 20a of the pin-shaped cutting blade 20 is held and protruded downward, and a large-diameter head is inserted into the hole 28 from above. The portion 20h is disposed so as to be located on the upper side. Further, in order to prevent the pin-shaped cutting blade 20 from falling off, a holding member 30 holds the head 20h of the pin-shaped cutting blade 20.
Hold it from above. Note that the pin-shaped cutting edge 20 can be fixed to the disc member 24 by various known techniques.

Here, the configuration of the pin-shaped cutting edge 20 will be explained in detail. As shown in FIG. 7a, the pin-shaped cutting edge 20
A pin-shaped tip 20c made of expensive carbide or the like having a small diameter and excellent wear resistance, and this pin-shaped tip 2
Inexpensive and soft holding member 20b that holds 0c
The pin-shaped cutting edge 20 is made of these and is hard to break and strong.

Then, the shaft portion 26 of the cutter portion 22 is passed through the hole 16a of the plate-shaped holding portion 16 from below via the spring washer 32, and the upper portion 26 of the shaft portion 26 is
t is screwed on with a nut 36 via a spring washer 34, and is provided so as to be able to rotate slightly. Thereby, the cutter portion 22 is configured to be swingable with respect to the plate-shaped holding portion 16.

Further, a space is provided between the disc member 24 and the holding member 30, which are holding plates of the cutter portion 22, and the inside thereof is filled with fluid and the pin-shaped cutting blade 20 is moved forward and backward according to the uneven shape of the part to be cut. A section 38 is provided.

To be more specific, a space 38 is formed by the disc member 24 and the holding member 30 on the upper side of the disc member 24, which is a holding plate of the cutter part 22 and is formed into a disc shape, for example.
form. At this time, the space 38 is filled with a fluid 40 such as oil.

Note that the reference numeral 42 is a dust collection hole formed in the plate-shaped holding portion 16.

Next, the effect will be explained.

When cutting the part to be cut, for example, the floor,
The driving unit 8 of the surface finishing device 2 is driven to move the surface finishing device 2 forward, and the cutting edge 20a of the pin-shaped cutting blade 20 is brought into contact with the floor surface, and the surface finishing device 2 is moved according to the uneven shape of the floor surface. Cutting part 2 while following the unevenness
2 to reliably cut the surface of the part to be cut.

As a result, by using an off-the-shelf pin-shaped cutting blade as the cutter part of a surface finishing device that performs cutting work on a part to be cut, such as a floor surface, the cutter part can be formed at a low cost, which is economically advantageous. In addition, the structure of the cutter part can be simplified, the pin-shaped cutting blade can be easily replaced, and the cutter part can be manufactured very easily.

In addition, since the uneven surface of the part to be cut can be reliably cut, there is no uncut material left during the cutting operation, and the adhesion of the subsequent coating process is improved, which is advantageous in practice.

Furthermore, the pin-shaped cutting blade of the cutter moves forward and backward according to the uneven shape of the floor surface, which makes it possible to reduce vibration and noise during cutting operations, making it easier to use. It can be improved.

Furthermore, when performing cutting work, Fig. 7b
As shown in FIG. 2, the cutting edge 20a of the pin-shaped tip 20c has a cutting edge function, and the sharpness of the cutting edge 20a can be maintained well, and the pin-shaped tip 20c can be used to the end, extending its service life. It is economically advantageous.

In addition, since the inexpensive and soft holding member 20b that holds the pin-shaped tip 20c is easily worn out in accordance with the wear of the cutting edge 20a, there is no inconvenience that the pin-shaped tip 20c is broken, and the cutting edge 20
The amount of protrusion of a can be kept constant, and the cutting edge 20a
This is advantageous in practice since there is no risk of reducing the cutting ability of the machine.

Furthermore, since the cutting edge 20a is formed to have a small diameter, the cutting edge 20a can penetrate into the part to be cut well, and the cutting ability can be improved.

It should be noted that this invention is not limited to the above-mentioned embodiments, and can be modified in various ways.

For example, in the embodiment of this invention, a space 38 is formed above the disc member 24 of the cutter part 22 by the disc member 24 and the holding member 30, and the space 38 is filled with oil. Although the configuration is such that the pin-shaped cutting blade 20 is configured to be filled with the fluid 40, any configuration that allows the pin-shaped cutting blade 20 to move forward and backward may be used, and it is also possible to use a biasing mechanism such as a spring.

[Effects of the invention] As is clear from the detailed explanation above, according to this invention, a pin-shaped cutting edge is provided in which the pin-shaped tip is held by a soft holding member except for the cutting edge, and
Pin-shaped cutting blades are inserted into the plurality of holes of the holding plate, and a cutter part is provided in which the large-diameter head of the pin-shaped cutting blade is held by the holding plate and the holding member. A space is provided between the holding plate and the clamping member, which is filled with fluid and allows the pin-shaped cutting blade to move forward and backward according to the uneven shape of the area to be cut, so that cutting of the area to be cut, for example, the floor surface, can be performed. The cutter part of the surface finishing device can be formed at low cost by using a ready-made pin-shaped cutting blade, which is economically advantageous, and the structure of the cutter part is simplified, making it easier to replace the cutting blade. It is extremely easy to manufacture. Also,
It is possible to reliably cut the surface of the front surface to be cut, there is no uncut material during the cutting operation, and the adhesion of the post-process painting is good, which is advantageous in practical terms. Furthermore, the cutting edge of the pin-shaped tip has a cutting edge function, which allows it to maintain good sharpness, and allows the pin-shaped tip to be used to the end, extending its service life, making it economical. It's advantageous. Furthermore, since the inexpensive and soft holding member that holds the pin-shaped tip easily wears out as the cutting edge wears, there is no inconvenience of the pin-shaped tip breaking, and the amount of protrusion of the cutting edge is kept constant. This is advantageous in practice since there is no risk of reducing the cutting ability of the cutting edge.
In addition, by forming the cutting edge with a small diameter, the cutting edge can penetrate into the part to be cut well, and the cutting ability can be improved.

[Brief explanation of the drawing]

Figures 1 to 7 show an embodiment of this invention, with Figure 1 being a schematic enlarged sectional view of the cutter part, Figure 2 being a schematic enlarged sectional view showing the attachment state of the cutter part, and Figure 3 being a schematic enlarged sectional view of the cutter part. 4 is a schematic perspective view of the plate-like holding part of the surface finishing device; FIG. 5 is a bottom view showing how the cutter part is attached to the plate-like holding part; FIG. 6 is a bottom view of the cutter part; FIG. 7a is a schematic enlarged sectional view of the pin-shaped cutting blade before use, and FIG. 7b is a schematic enlarged sectional view of the pin-shaped cutting blade after use. In the figure, 2 is a surface finishing device, 4 is a caster, 6 is a weight, 8 is a drive unit, 10 is a dust collector, 1
2 is an operating handle, 14 is a switch, 16 is a plate-shaped holding part, 18 is a rubber skirt part, 20 is a cutting blade,
20a is the cutting edge, 20h is a large diameter head, 20c is a pin-shaped tip, 20b is a soft holding member, 22 is a cutter part, 24 is a disc member, 26 is a shaft part, 28 is a hole part, 30 is a holding member Members 32 and 34 are spring washers, 3
6 is a nut, 38 is a space, 40 is a fluid, and 42 is a dust collection hole.

Claims (1)

[Scope of utility model registration request] In a surface finishing device that has a pin-shaped cutting blade that cuts the surface of the part to be cut by attaching a plurality of cutter parts each having a plurality of pin-shaped cutting blades to a predetermined part and driving them to rotate, the pin-shaped cutting part is cut by a soft holding member. A pin-shaped cutting blade is provided in which the tip other than the cutting edge of the chip is buried and held, and the pin-shaped cutting blade is inserted into a plurality of holes of the holding plate, and the large-diameter head of the pin-shaped cutting blade is held. A cutter part held by a plate and a holding member is provided, and a fluid is filled between the holding plate and the holding member of the cutter part, and the pin-shaped cutting blade is moved forward and backward according to the uneven shape of the part to be cut. 1. A surface finishing device having a pin-shaped cutting blade, characterized in that a space portion is provided to allow the surface to finish.