JPH0222209Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a polishing machine that reliably and efficiently polishes the uneven processed surface of a wooden product or the like using a plurality of cup-shaped polishing brushes.

(Prior Art) Conventionally, the inventor of the present invention developed a polishing machine for polishing uneven surfaces of wooden products, etc.
The rotary sander related to No. 123644 was provided.

This abrasive body is formed from a linear flexible abrasive member, which is attached to a plurality of rotating shafts extending radially from a rotating shaft, and the abrasive body is rotated and revolved to remove the irregularities of the workpiece. The flexible polishing member is long and bends when it hits the machined surface as shown in Figure 9, so the shape is simple and the roughness of the machined surface is smooth. The above-mentioned flexible polishing member was able to fit in and polish the concave portion.

Further, a polishing device that performs polishing using a cup-shaped brush is known from Japanese Utility Model Application Publication No. 151748/1983.

This polishing device rotates and slides the tip of a thrust brush attached to the tip of a rotating shaft onto the surface to be polished.
This sliding surface is polished or deburred.

(Problem to be solved by the invention) However, in the former type of rotary sander, since the polishing body is of a rotary type, the circumferential surface of the polishing body is made to rub against the surface to be processed, so the flexible polishing The member comes into contact with the workpiece surface while following a circular trajectory.

Therefore, for example, for objects with complicated shapes and fine undulations, such as sculptures, the flexible polishing member cannot penetrate into the undulations because it bridges over the undulations, as shown in Figure 9. .

Therefore, even if the convex portions of the material are polished, polishing remains in the concave portions, so that it is not practical for polishing complex surfaces such as sculptures.

In addition, since the latter polishing device has a cup-shaped brush facing upward with its upper surface aligned with the feeding table, the surface to be polished is inevitably fed downward, and the polished workpiece is taken out. Since it moves while rubbing against the table surface, it creates new scratches on the polished work surface, resulting in defective products.

Brushes that are supported by multiple shafts can be adjusted up and down in a series, but there is no fine adjustment means for raising and lowering a single brush, so each brush is finely adjusted individually to align the contact with the machined surface, and to adjust the height of the machined surface. It is not possible to uniformly polish the entire surface, resulting in uneven processing.

Each of them has various problems.

The present invention was developed to solve the above-mentioned problems, and the height of the polishing brushes is adjusted individually to bring the flexible polishing member into uniform contact with the surface to be machined. This cup-shaped brush is capable of uniformly polishing evenly, and is equipped with cup-shaped polishing brushes made of flexible polishing members in a staggered manner, and can automatically polish even complex and finely undulated work surfaces. The purpose is to provide polishing machines.

(Means for Solving the Problems) The means of the present invention for achieving the above-mentioned objects include: a material transfer means provided horizontally to a frame; and an adjustment means provided above the transfer means to adjust the material to the frame. a plurality of rows of lateral guides along the material feeding direction supported so as to be able to rise and fall; a plurality of sets of laterally movable brush holders held at predetermined intervals by these lateral guides; and a brush holder that is engaged with the brush holders. The cup-shaped polishing brush is attached to a lifting plate that is individually adjusted up and down by lifting means, and the linear flexible polishing member thereof faces the material feeding means.

Therefore, the above-mentioned polishing brushes are arranged in a staggered manner with the centers of the front and rear brushes shifted from each other, and the flexible polishing member is uniformly brought into contact with the surface to be polished which has complex irregularities. This is due to the configuration of the cup-shaped brush polishing machine.

(Function) The present invention achieves the following functions by virtue of the above-described configuration.

First, the height of the lower surface of each polishing brush, which is suspended in large numbers, is adjusted individually using the adjusting means of the horizontal guide and the raising and lowering means of the lifting plate, so that uniform contact with the work surface of the material and uniform polishing can be achieved. Make sure you get it.

When a large number of polishing brushes and the transfer means are driven to supply material to the transfer means, the material is transferred under the polishing brushes by the transfer means.

The processed surface of the material that has reached the polishing brush is first polished by the front polishing brush, and then sequentially transferred to the adjacent polishing brushes as it is transferred by the transfer means, where it is polished respectively.

At this time, each wire of the flexible polishing member of the polishing brush is approximately perpendicular to the surface to be processed.
And since they are in contact with a predetermined amount of pressure,
Even on a machined surface having complicated and fine undulations, the flexible polishing member does not hit the concave and convex portions, but reliably enters the concave portions to polish this portion, and approximately averages the amount of polishing of each portion.

The cup-shaped polishing brush rotates on the surface to be processed as shown in Fig. 8, and its left and right parts rub the surface parallel to the wood grain.
The front and rear parts are rubbed perpendicularly to form vertical and horizontal polished areas on the surface to be processed.

On the other hand, behind the front polishing brushes, the rear polishing brushes are arranged in a staggered arrangement with the center shifted, and the parts that have been polished by the front polishing brushes in parallel with the wood grain are then polished. Sand so that it is perpendicular to this grain.

Also, the part that was polished perpendicular to the wood grain is now polished parallel to this grain,
Since the polishing condition of each part of the surface to be processed is averaged, even surfaces to be processed that are complex and have fine undulations, such as sculptures, can be completely polished automatically, and manual refinishing is not required.

(Embodiment) Next, an embodiment of a cup-shaped brush polishing machine according to the present invention will be described based on the drawings.

In Figures 1 to 3, 1 is a frame, at the bottom of which is a lifting board 3 supported by cylindrical guides 2, 2, which can be raised and lowered using adjustment screws 7, 7 linked by an interlocking shaft 4 and gears 5, 6. It is provided in

A material transfer means C is provided on the upper part of the elevator plate 3, and this transfer means C has a driven roller 8 on the front side and a drive roller 10 rotated by a motor 9 on the rear side. It is constructed by suspending an endless material feeding belt 11 between the rollers 8 and 10, and the height of the material feeding surface of this material feeding belt 11 is controlled by the forward and reverse rotation of the adjusting screws 7 and 7. It can be adjusted freely.

In FIG. 3, 12, 12 are two sets of vertical guides, front and rear, provided on both sides of the upper part of the frame 1,
The material feeding belt 11 is attached to these vertical guides 12, 12.
Adjustment means 18, such as an adjusting screw, which engages lifting parts 14, 14 fixed to both ends of the horizontal guide 13 corresponding to the upper part, and is rotated in conjunction with the lifting parts 14, 14 by gears 16, 17 of an interlocking shaft 15. 18 screwed together,
By rotating the adjustment means 18, 18 in forward and reverse directions, the horizontal guide 13 is raised or lowered to an arbitrary height.

A plurality of brush holders 19 are held by this lateral guide 13 so that mutual spacing can be freely adjusted by lateral movement.

Each brush holder 19 has a vertical guide 2.
0, and each vertical guide 20 is provided with a lifting board 21.
The polishing brush 24 is attached to the lifting plate 21 by linking the lifting plate 21 with a lifting means 22 using screws or the like which raises and lowers the plate individually.
The drive motors 23 are individually adjusted up and down, and fine adjustments are made so that the tip of each polishing brush 24 applies uniform and almost the same polishing pressure to the surface to be processed of the material. .

The polishing brush 24 polishes the surface of the material to be processed according to its surface shape, and as shown in FIGS. It is constructed by planting it in b.

The polishing brush 24 is installed by attaching the base b to the shaft of the motor 23 attached to the lifting board 21 so that the horizontal, that is, the flexible polishing member a contacts the surface to be processed of the material perpendicularly. When rotated, due to the appropriate flexibility of the polishing member a, its tip fits well even on the surface to be processed, which has complex and fine undulations, and the uneven portions are polished evenly.

In particular, this polishing brush 24 has two rows of front and rear rows arranged in a straight line as shown in FIG. Alternatively, as shown in Figure 7, one (or both) of the front and rear rows can be arranged in a non-linear array, with the center of the front and rear rows shifted, and the rear row of rows placed between the front rows. As a so-called staggered arrangement, each part of the surface to be machined is subjected to an average of vertical polishing and horizontal polishing.

Reference numeral 25 denotes a material holding roller, which is used in front and rear of the front and rear polishing brushes 24 and in each polishing brush 24, 24.
is disposed in the middle of the transfer means C so as to be orthogonal to the material feeding direction in the transfer means C, and is pressurized by a bullet machine as is known in the art to press the material against the material feeding belt 11,
This ensures reliable material feeding and stable polishing.

Next, the operation of the above embodiment will be explained.

First, after finely adjusting each polishing brush 24 individually by operating the adjustment screw 22 to align the contact of the flexible polishing member a with the surface to be processed, the adjustment screw 18,
The polishing brushes 24 are simultaneously adjusted by 18 interlocking adjustments to set the polishing amount of the material, and the polishing brushes 24
If the material feeding belt 11 is rotated by the motor 23 and the motor 9 to feed the material between the material feeding belt 11 and the polishing brush 24, the material will be polished under the polishing brush 24 in the front row and in the rear row. The brush passes under the brush 24 and is repeatedly subjected to the polishing action as detailed in the action section above, even when the surface to be processed is complex and has fine undulations, such as a carved object.
It adapts well to these undulations and reliably enters the recesses, and does not leave any unscraped parts in this area.The difference in polishing direction between left and right and front and back, which is a drawback of the cup-shaped polishing brush 24, is due to the staggered arrangement of the front and rear brushes. With this method, materials with complex and fine undulations that cannot be processed with conventional rotary sanders can be polished automatically, eliminating the need for manual refinishing.

(Effects of the invention) The cup-shaped brush polishing machine according to the present invention has a flexible polishing member of the polishing brush that comes into contact with the processed surface of the material almost perpendicularly, so that when polishing an uneven processed surface,
Since the polishing member securely enters the concave portion and polishes this portion without hanging onto the bridge over the unevenness, it is possible to completely mechanically polish materials such as sculptures that have complex and fine undulations that cannot be mechanically polished.

Even if you use a cup-shaped polishing brush with different polishing directions for the front and back rows, the front and rear brushes will hit where the left and right sides of the front brush touch, and the front and back of the rear brush will touch where the front and rear brushes touch. Since the left and right sides of the rear brush come into contact and the polishing condition of each part is averaged, there will be no polishing unevenness on the entire surface of the processed surface after polishing is completed.

Furthermore, this device has a means for adjusting the horizontal guide and a means for elevating the elevating plate to which the polishing brush is attached.
Since the contact position of the polishing member of the polishing brush with the lower surface of the polishing member, that is, the surface to be processed, can be adjusted by finely adjusting the polishing brush individually, it is possible to apply uniform polishing pressure to the entire surface of the surface to be processed. This, in combination with the staggered arrangement described above, provides a more average polishing result.

It has special effects such as:

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a cup-shaped brush polishing machine according to the present invention. Figure 2 is a front view of the same as above. FIG. 3 is a side view showing the interlocking elevating part of the polishing brush in the same as above. FIG. 4 is a partially longitudinal front view of the cup-shaped polishing brush in the same as above. Figure 5 is a bottom view of the same as above. FIGS. 6 and 7 are plan views showing a staggered arrangement of cup-shaped polishing brushes in the same as above. FIG. 8 is an explanatory diagram of the cup-shaped polishing brush in a different polishing direction in the same as above. FIG. 9 is an explanatory diagram of a state in which a flexible polishing member of a polishing body in a conventional rotary sander is difficult to adapt to complicated and fine undulations. In the figure, 1 is a frame, C is a transport means, 18
13 is an adjusting means, 13 is a horizontal guide, 19 is a brush holder, 22 is an elevating means, 21 is an elevating plate, a is a flexible polishing member, and 24 is a polishing brush.

Claims (1)

[Scope of utility model registration request] A material transfer means provided horizontally to the frame, a plurality of rows of horizontal guides along the material feeding direction that are disposed oppositely above the transfer means and supported by the frame so as to be able to rise and fall freely, and these horizontal guides. A plurality of sets of laterally movable brush holders held at predetermined intervals are attached to an elevating plate that is engaged with the brush holders and individually adjusted up and down by an elevating means, and the linear flexible polishing is performed. The member consists of a cup-shaped polishing brush facing the material feeding means, and these polishing brushes are arranged in a staggered manner with the front and rear brushes offset from each other, and the polishing brushes are arranged in a staggered manner so as to cover a surface having complicated irregularities. A cup-shaped brush polishing machine characterized in that the flexible polishing member is uniformly brought into contact with the polishing surface.