JPH0427501Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention can also be used as a wood carving machine, and is also used to peel off soft materials such as paint films, cork tiles, P tiles, and jutan stuck to concrete. The present invention relates to a soft material removal device that can also be used as a peeling machine, and particularly relates to a device that applies high-speed vibration to the blade portion and removes the soft material by linear movement.

"Prior Art" The applicant first formed a cam surface at the tip of a cam shaft rotatably supported on a main body, and applied the cam surface to a fixed shaft to which a wood carving knife was fixed via a steel ball. On the other hand, a wood carving machine has been proposed in which a wood carving cutter is vibrated in a straight line through a steel ball to perform wood carving, following the rotational displacement movement of a cam surface caused by the rotation of the cam shaft. (Utility Model Registration No. 1285110, Jitsukiaki
52-36318) "Problems to be Solved by the Invention" In this conventional technology, since the steel ball is configured to generate linear vibration while rotating on the cam surface,
The problem has been that the cam surface is easily worn due to the point contact and pressure of the steel balls, resulting in poor durability.

However, since the steel ball is sandwiched between the cam surface and the fixed shaft end, if the pressing force of the blade part is strong, the two members cannot smoothly roll due to pressure contact. In some cases, it bit into the cam surface and generated frictional heat due to its vibration.

In addition, in the above structure, since the displacement movement of the cam surface is directly transmitted to the fixed shaft of the blade, this mechanism can be used to remove soft materials such as paint films, cork tiles, P tiles, and jutan adhered to concrete. When used as a peeling machine to peel materials, there was a risk that the impact force would be so strong that it would crush the concrete surface, making it impossible to use it as a peeling machine.

Furthermore, with the above configuration, if the steel ball and the cam surface are separated from each other and the hand is swung toward the blade, a repulsive force is generated as soon as the steel ball and the cam surface come into contact, causing injury to the finger or hand, which poses a safety problem. It was hot.

In view of the shortcomings of the prior art, the first object of the present invention is to provide a soft material removal device that utilizes high-speed vibration and can be used both as a peeling machine and as a wood carving machine.

Another object of the present invention is to provide a soft material removal device that utilizes high-speed vibration and is designed to improve safety and durability.

"Means for solving problems" In order to achieve such technical problems, this invention
An inner ring eccentrically supported on a rotating shaft, an outer ring rotatably fitted to the inner ring via a plurality of steel balls interposed on the outer peripheral surface of the inner ring, and a rear end thereof facing the outer peripheral surface of the outer ring. and a blade attachment member attached so as to be swingable while maintaining a free state in an adjacent direction, and by pressing the blade portion located at the tip of the attachment member against a soft material, the above-mentioned A soft material removing device is proposed in which the rear end of a mounting member is configured to be able to come into contact with the outer circumferential surface of an outer ring.

"Function" According to this technical means, since the inner ring, steel balls, and outer ring constitute a so-called rolling bearing, the blade mounting member (hereinafter referred to as the diaphragm) is spaced apart from the outer circumferential surface of the outer ring. In this state, when the rotating shaft is rotated, the entire bearing rotates following this rotation, and no linear momentum is imparted to the diaphragm.

When the diaphragm is pressed against, for example, a member to be peeled, the end face of the diaphragm and the circumferential surface of the outer ring come into contact with each other, so that only the outer ring is gripped by the frictional force between the two and its rotational movement is stopped, and the inner ring Since only the side rotates eccentrically, only the amplitude corresponding to the amount of eccentricity is transmitted to the outer ring through the steel balls interposed therebetween, and the amplitude is transmitted to the diaphragm together with the outer ring.

Therefore, the bearing outer ring, which is held in direct contact with the diaphragm, vibrates back and forth while drawing a gentle sine curve together with the diaphragm, resulting in quiet high-speed vibration.

In addition, when the pressing of the diaphragm against the member to be separated is released in this state, the diaphragm is easily separated because no urging force is applied toward the outer circumferential surface of the outer ring, and the vibration is canceled. becomes.

Therefore, since the diaphragm only moves forward and vibrates at high speed, the efficiency of peeling and cutting is extremely improved, and there is no risk of damaging the concrete or other parts. It becomes possible to provide a softening agent removal device which is extremely preferable as a peeling machine for peeling off the attached soft material such as jutan.

Also, the reason why the diaphragm does not have an impact repulsive force is that even if a finger or hand swings against the blade, the finger or hand is soft, so the finger or the like absorbs the slight vibration caused by the eccentricity, and the finger or the like moves. It never breaks and is extremely safe.

The fact that the diaphragm vibrates at high speed and moves forward means that even if the film on the soft material side is thick, the blade attached to the tip of the diaphragm can easily penetrate into the soft material, making it easy to peel it off. is achieved.

In other words, in conventional peeling machines, the grinder that grinds from the surface requires longer peeling time as the soft material to be peeled becomes thicker, but with the present invention, the peeling time can be shortened regardless of the thickness of the soft material to be peeled. It can be peeled off and the soft material can be removed uniformly without leaving any peeling residue.

There are other peeling machines in which the blade moves back and forth (piston), but since the blade moves not only forward but also at the rear end, the cutting is poor, and it unnecessarily slides in the same place, resulting in poor processing efficiency. It also falls.

The mechanism is also complicated because the blade part is retracted.

In the present invention, since the blade only moves forward, it does not move back and forth in the same location or attempt to cut the same location, and the cutting efficiency is very high.

Also, the blade attached to the diaphragm should be wide or L.
By replacing it with a letter-shaped one, efficient peeling becomes possible.

In addition, since the present invention can be formed flat with only the rolling bearing attached to the rotating shaft and the diaphragm, it can be easily manufactured by simply modifying a commercially available disc grinder, achieving high versatility and miniaturization. .

Furthermore, according to the present invention, the outer ring of the bearing is in contact with the diaphragm because the contact resistance between the outer ring and the diaphragm is extremely greater than the rotational resistance between the inner ring and the outer ring, so the outer ring slides between the diaphragm and the diaphragm. Since the rollers are rolled only by the relative eccentric diameter without any problems, there is no risk of wear between the two, which greatly improves the durability caused by the wear, and also prevents heat generation from the sliding. do not have.

In addition, since there are many steel balls between the inner and outer rings, the pressing force is dispersed, and the hard balls do not remain stationary at a predetermined position, but roll on the circumferential surfaces of the two rings with minute resistance. Since the wheels are moving, wear on the inner ring side does not occur to the extent that it becomes a problem.

Furthermore, since the rotational torque of the rotating shaft is only the eccentric radius of the inner ring, it is small, so a relatively small motor is sufficient, and power consumption can be reduced as well as weight and size reduction.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail by way of example with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, and relative positions of the components described in this example are not intended to limit the scope of this invention, but are merely illustrative examples. It's nothing more than that.

1 to 3 show a peeling machine according to an embodiment of the present invention attached to a known disk grinder. In the figure, 1 is a base 1 attached to the disk grinder body which has a built-in motor (not shown). A rotating shaft 11 protrudes from the bottom surface, and the rotating shaft 11 is threaded with threads 11 in order to facilitate attachment of the disk plate.
A is engraved and two sides of the base 11b are cut out.

Further, the base 1 is as shown in FIGS. 2 and 3,
A rectangular recess 12 for housing a diaphragm, which will be described later, is formed on the front side, which is the axis of the rotating shaft 11, in other words, on the upper right side of FIG. U-shaped grooves are provided on both the left and right sides of the line center line, opening toward the rotating shaft 11 side, and serve as grooves 13 for preventing the diaphragm from coming off, which will be described later.

Reference numeral 2 designates a bearing unit fitted to the rotating shaft 11, which includes a disk ring-shaped receiving plate 21 and a flange 22a at the upper end.
The bearing body 20 is comprised of a cylindrical eccentric tube 22 having a cylindrical shape, and a bearing body 20 fitted to the circumferential surface of the eccentric tube 22.

The cylindrical eccentric tube 22 has a center hole 22b.
A screw groove is formed in the rotary shaft 11 so that the rotary shaft 11 can be screwed onto the rotary shaft 11, and the outer peripheral side thereof is formed slightly eccentrically with respect to the center hole 22b.

The bearing body 20 is connected to the inner ring 23 through an inner ring 23 that is tightly fitted to the circumferential surface of the eccentric cylinder 22 and a large number of steel balls 24 interposed on the outer periphery of the inner ring 23.
The outer ring 25 has an outer ring 25 rotatably fitted to the outer ring 25, and the outer diameter of the outer ring 25 is set to be slightly larger than the outer diameter of the flange 22a of the eccentric cylinder 22.

After fitting the receiving plate 21 into the base portion 11b of the rotating shaft 11 in a key shape, the eccentric tube 22 with the bearing body 20 attached to the outer peripheral surface is screwed onto the threaded portion of the rotating shaft 11. The flange 22a and the receiving plate 2
1 to press and hold the bearing body 20. As a result, the rotating shaft 11 and the bearing body 20 are integrated.

3 is a rectangular flat diaphragm having a width and height slightly smaller than the rectangular recess 12 on the main body 1 side;
Horizontal slit groove 3 for attaching the blade part 4 to its tip side
1 and a screw mounting hole 32 are formed, and a bolt 33 is screwed onto the upper surface side corresponding to the slip-off prevention groove 13 on the base end side facing the outer ring 25 of the bearing body 20.
The diaphragm 3 is configured to be able to swing only within a predetermined range without being pulled out in cooperation with the slip-off prevention groove 13.

After the diaphragm 3 is housed in the recess 12 so as to face the outer circumferential surface of the outer ring 25, the clamping plate 5 is placed on the bank 14 of the disc grinder main body 1 located on both left and right sides of the recess 12 so as to straddle the diaphragm 3. After abutting and fixing with bolts 36, the diaphragm 3
The flat blade part 4 is inserted into the horizontal slit groove 31 on the tip side and fixed with the bolt 33.

As a result, the diaphragm 3 is housed with a slight gap between the recess 12 and the clamping plate 5 both vertically and horizontally, and as a result, it can be swung only in the direction toward and away from the outer ring 25. Also, the diaphragm 3
The surface is coated with Teflon,
It is designed to be able to swing with lower frictional resistance.

According to this embodiment, the above-described effects of the present invention can be smoothly achieved.

``Effects of the invention'' As described above, this invention vibrates with a gentle sine curve and only forward motion is imparted to the blade, so it can be used not only as a wood carving machine but also as a paint film, cork tile, plastic, etc. It is possible to provide a soft material removal device that is most suitable as a peeling machine for peeling off soft materials such as jutan stuck to tiles and concrete.

Moreover, in the present invention, since vibrations are transmitted while the outer ring 25 and the diaphragm 3 are stationary, there is no risk of wear between them, and durability can be greatly improved.

Further, as described above, since vibrations are transmitted while the outer ring and the diaphragm are stationary, no impactive repulsive force is generated, and safety can be improved.

It has various effects such as

[Brief explanation of the drawing]

1 to 3 show a peeling machine according to an embodiment of the present invention attached to a known disc grinder, in which FIG. 1 is a front sectional view, FIG. 2 is a plan view, and FIG. 3 is the same as that in FIG. It is a sectional view of the main part taken along the line A-A'.

Claims (1)

[Scope of utility model claims] An inner ring eccentrically supported on a rotating shaft, an outer ring rotatably fitted to the inner ring via a plurality of steel balls interposed on the outer peripheral surface of the inner ring, and a rear end thereof facing the outer peripheral surface of the outer ring. and a blade attachment member attached so as to be swingable while maintaining a free state in an adjacent direction, and by pressing the blade portion located at the tip of the attachment member against a soft material, the above-mentioned A soft material removal device configured such that a rear end of a mounting member can come into contact with the outer peripheral surface of an outer ring.