JPS59129654A - Both side surface type grinding belt sander - Google Patents

Abstract

PURPOSE:To effect the optimum grinding in accordance with the quality grain or the like of wood by a method wherein a sanding frame is permitted to be rotated about a pivoting shaft to permit to change the running angle of a rough grinding belt. CONSTITUTION:An adaptor frame 5 is moved with respect to the adaptor frame 4 to coincide the distances of rough grinding devices 30, 30 and finish grinding devices 50, 50 with the width of a work and a caterpillar frame 10 as well as a longitudinal frame 11 are moved integrally with the adaptor frame 5. Next, when a handle is rotated manually, pivoting frame 32 is swung about a shaft 36 into a work sending direction and is positioned from a position, orthogonal to the work sending direction, to a properly slanted position. According to this method, a slant angle may be selected properly from a heavy grinding, in which the running direction of the rough grinding belt 43 is orthogonal to the direction of the fiber of the wood of the work piece, to a light grinding in order to obtain a necessary grinding amount and the finish grinding, in which the grinding direction is along the direction of the fibers of the wood, may be effected between the finish grinding devices 50, 50.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt sander machine that simultaneously grinds and polishes both sides of a workpiece such as wood plywood or resin material. This invention relates to a belt sander that efficiently performs sanding.

Normally, in order to smoothly finish a workpiece to a predetermined dimension, it is necessary to perform rough grinding to determine the width of the plate material, and finish grinding and polishing to smooth the ground surface.

In order to perform this rough grinding and finish grinding and polishing automatically, a rough grinding belt is provided in front of the material feeding path, and a finish grinding belt is provided behind it on both sides, and the amount of grinding by the rough grinding belt is increased. The present applicant has developed a rough grinding belt in which the belt runs perpendicularly or diagonally to the running direction in order to prevent the formation of grinding marks that occur when grinding a thin surface on the rough grinding belt. Application was filed (Patent Application 1987-
141438).

In order to make the above-mentioned invention even more useful, the present invention makes it possible to adjust the amount of grinding by making the angle of the rough grinding belt variable, and the belt is attached to both sides of the material feeding path so as to move relatively toward and away from each other. is provided with a frame, and both frames have rotating shafts projecting inwardly in a direction perpendicular to the material feeding direction, supporting a sanding frame with a roll pivoted up and down on the shafts,
A rough grinding belt is hung around the roll so that the grinding running part of the rough grinding belt faces the material feeding path, and the running angle of the rough grinding belt is controlled by making the sanding frame rotatable around the shaft. The finishing grinding abrasive belt is configured to be adjustable from perpendicular to the material feeding direction to any arbitrary angle, and the finishing grinding abrasive belt running in the same direction as the material feeding path is attached to the rear of the rough grinding heald, and the mounting corresponds to the frame. When heavy grinding is required, the running direction of the rough grinding belt should be close to perpendicular to the material feeding direction to improve the grain of the wood. The workpiece is polished from the direction perpendicular to the belt, and when the heavy grinding is to be alleviated, the running direction of the rough grinding belt is inclined, and the oblique angle is changed according to the material, grain, etc. of the wood. It is designed to perform optimal grinding.

An embodiment of the invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a lower frame, on the upper surface of which a dovetail guide 2 is formed in the left-right direction, a mounting frame 4 is fitted on the left side of the guide 2, and a mounting frame 5 is fitted on the right side of the guide 2. .

As shown in FIG. 3, a moving screw 7 rotated by a deceleration motor 6 mounted on the right side of the lower frame 1 is inserted into the insertion hole 3 formed on the upper surface of the guide 2, and the mounting frame 5
By protruding a part of the base 8 into the insertion hole 3 and screwing it onto the moving screw 7, the mounting frame 5 is moved in the width direction by the rotation of the deceleration motor 6, and thus the mounting frame 4-15
The width of the material feeding path between the two is variable.

The mounting frame 4.5 has a longitudinally long caterpillar frame 10.10 on the inside and a columnar vertical frame 1 on the outside.
1.11 are installed on bases 8 and 8-hi, respectively.

The left and right caterpillar frames 10.10 have front and rear driven wheels 12. A caterpillar 14 stretched around a drive wheel 13 is provided, and its upper straight running part faces slightly above the caterpillar frame 10. The left and right drive wheels 13 are connected by a spline shaft 15, and the right drive wheel 13 moves along the spline shaft 15 as the mounting frame 5 moves in the ri direction. Further, the spline 5 is rotated by a drive motor 17 mounted on a support frame 16, thereby causing the caterpillar 14 to travel.

20, 2'O is the front δ self caterpillar frame 10, 10
The presser belt frames 20 are fitted into the dovetail guides 21 formed on the inner surface of the vertical frame 11 so as to be able to rise and fall freely (the first
(see figure). A lowering screw 22 is inserted into the vertical frame 11, and its rotation lowers the presser belt frame 20 along the dovetail guide 21. The lifting screw 22
is rotated by the drive of a reversible motor 24 attached to the vertical frame 11 by means of a connecting device within the link cover -23.

The presser belt frame 20 has front and rear driven rollers 25.
, drive rollers 26 are pivotally supported, and a material feeding presser belt 27 is wrapped around the rollers 25 and 26.
is connected to the drive motor 17 by suitable connection means. Rotate the recording material pressing belt 27 with the caterpillar 1.
4, and constitutes a material feeding device consisting of caterpillars 14 and material feeding pressing belts 27, which correspond to the upper and lower sides of the material feeding path.

30.30 is a rough grinding device according to the main part of the present invention provided on the side of the caterpillar 14, and support frames 31 protruding forward are fixed to the front sides of the left and right vertical frames 11.11, respectively. , the rotation frame 3 is attached to the support frame 31.
I support 2.

As shown in FIG. 4, the rotating frame J-32 has a shape consisting of a support plate 34 in the front and back direction whose inner surface is inclined downward, and a mounting plate 35 in the left and right directions that protrudes toward the material feeding path. A rotation shaft 36 is provided on the supporting plate 34 in the left-right direction, and a sanding frame 37 is fixed to the reporting plate 35 at a distance from the inclined inner surface of the supporting plate 34. The sanding frame 37 has a tension driven roll 38 on its upper surface.
A drive roll 39 is supported at the bottom thereof, and the drive roll 39 is connected to a grinding motor 40 attached to the lower front surface of the sanding frame 37. Further, a traveling guide plate 42 is fixed to the side surface of the sanding frame 37 on the material feeding path side. Further, a rough grinding heald 43 is attached to the tension/driven roll 38 and the drive roll 39, and is passed over the front surface of the traveling guide plate 42, the support plate 34, and the sanding frame 3.
7, the running guide plate 42 allows the grinding running section to face the material feeding path between the several frames 4.5.
The outer periphery of the driven roll 38 or the like is covered with a cover 47, and the cover 47 is brought into contact with the inclined inner surface of the support plate 34.

111j The pivot 36 is inserted through the outer side of the support frame 31, and the bevel gear 44 is fixed to the end thereof, and the bevel gear 44 is fixed to the end of the pivot 36. $
! : 44 is supported on the support frame 31)\tor4
It meshes with the bevel gear 45 rotated by 6.

50.50 is a finish polishing device provided on both sides of the material feeding path behind the rough grinding device 30.30, which is supported by the vertical frame 11.11 so as to be movable up and down.
1 pivots a rotating drive/tension roll 52 in the vertical direction, further inwardly, driven rolls 53 and 53 are arranged triangularly with respect to the tension roll 52, and a heavy grinding abrasive belt 55 is attached to the roll group. The finishing grinding abrasive belt 55 is run along the material feeding direction by the grinding motor 51.

The operation of the above embodiment will be explained.

The deceleration motor 6 is driven to move the several frames 5 with respect to the first frame 4, and the interval between the left and right rough grinding devices 30, 30 and final polishing devices 50, 50 is made to match the width of the workpiece. As a result, the caterpillar frame 10, vertical frame 11, etc. move together with the J frame 5. Also, the finishing polisher, W50, is raised and lowered in accordance with the height 5 position of the workpiece.Next, the handle 46 is manually rotated, the rotating frame 32 swings in the material feeding direction around the rotating shaft 36, and moves from a position perpendicular to the material feeding direction in FIG. Rotating frame 3
It is also possible to make 11 rows in the material feeding direction by increasing the distance between the two rows. )do. For this reason, the running direction of the rough grinding belt 43 is applied to the wood 'fk% of the two materials.The angle of inclination ranges from heavy grinding performed perpendicular to the ML force direction to light grinding performed perpendicular to the wood fiber direction. By appropriately selecting , it becomes possible to obtain the required amount of grinding.

Thereafter, the grinding motors 40 and 51 are driven to run the rough grinding heald 43 and the finish grinding abrasive belt 55, and the drive motor 17 is further driven to make the caterpillar 14 and the material feeding belt 27 run. Then, the workpiece is placed on the caterpillar 14 and moved forward. The left end of the workpiece is held between the caterpillar 14 and the feed presser heald 27 and is automatically fed. ' The workpiece is subjected to a pre-grinding process of the required amount corresponding to the material of the workpiece by selecting the 1ψ oblique angle as described above between the rough grinding devices 30 and 30, and then to the final polishing device. Finish grinding and polishing is performed along the fiber direction of the workpiece between 50 and 50 degrees, and a smooth polished surface can be produced on the ground surface.

5 to 9 show a rough grinding device 60.6 according to a second embodiment of the present invention.
0, and a support frame 61 is attached to the front side of the vertical frame 11.
to be fixed. The support frame 61 projects support side plates 62, 64 forward in parallel at regular intervals, and the sanding frame 67 is pivoted around a rotation shaft 65 inserted between the support side plates 62, 64 so as to be able to swing back and forth. support

The sanding frame 67 supports a tension driven roll 68 on its upper surface and a driving roll 69 on its lower part.
The drive roll 69 is supported by the sanding frame 6
7 Connected to the grinding motor 70 attached to the lower front surface. Furthermore, a travel guide plate 72 is provided projecting from the side surface of the sanding frame 67 on the material feeding path side at a distance to avoid the support side plate 64. An arcuate groove 63 is formed in the supporting side plate 62, and the radius of the arcuate groove 63 is formed below the rotational axis 65 on the side surface of the sanding frame 67. Screw grooves 73 are provided at equal intervals, and butterfly screws 74 are screwed into the arcuate grooves 63 and the screw grooves 73, thereby making it impossible for the sanding frame 67 to swing about the rotation axis 65, thereby creating a support frame. Hold at 61. Furthermore, the rough grinding belt 43 is passed around the tension driven roll 68 and the drive roll 69, so that the supporting side plate 62, the supporting side plate 64, the sanding frame 67, etc. are arranged within the rough grinding belt 43.

The other part 75 is a cover with an open inner side that covers the rough grinding device 60 having such a structure.

] Loosen the butterfly screw 74 and then remove the swing frame 67.
When the sanding frame 67 is rotated manually or the like about the rotation shaft 65 to give the sanding frame 67 an appropriate inclination, and the i++ hinge 74 is tightened, the sanding frame 67
is pressed against the inner surface of the support side plate 62 and held in that position.

This swinging operation causes the rough grinding belt 43 to move in the seventh direction.
The angle of inclination can be appropriately selected from the heavy grinding position perpendicular to the wood fiber direction of the workpiece shown in the figure to the light grinding position parallel to the wood fiber direction, thereby controlling the required amount of grinding. It becomes possible to obtain. Other operations are the same as those of the first embodiment and will be omitted.

As clarified by the above description, the present invention is capable of adjusting the amount of grinding by making the angle of the rough grinding belt 43 variable, and is capable of relative movement toward and away from both sides of the material feeding path. For this installation, a rotating i1'th36 (65) is formed inwardly protruding from the frames 4, 5 in a direction perpendicular to the material feeding direction, and a sanding frame 37 (67) with a roll vertically supported on the shaft is supported. , a rough grinding belt 43 is attached to the roll.
The running angle of the rough grinding belt 43 is made variable by hanging the rough grinding belt 43 so that the grinding running part of the rough grinding heald 43 faces the material feeding path and making the sampling frame 37 rotatable around the axis. Therefore, the finish grinding and abrasive belt 55 running behind the rough grinding belt 43 in the same direction as the material feeding path is attached to the frames 4 and 5 in a corresponding manner, and the finishing process is carried out by one machine. If heavy grinding is required in a machine that performs rough grinding and finish grinding, the running force direction of the rough grinding belt 43 is made close to orthogonal to the material feeding direction, so that the wood is coated from a direction perpendicular to the grain of the wood. When grinding a processed material and wanting to reduce the heavy grinding, the running direction of the rough grinding belt 43 can be inclined, and the oblique angle can be changed depending on the wood material, wood grain, etc. to perform optimal grinding. There are some excellent effects that can be achieved.

[Brief explanation of the drawing]

Figures 1 to 4 show a first embodiment of the present invention, with Figure 1 being a partially cutaway plan view of the Herdsander machine, and Figure 2 showing the same part! ,l
The J-cut side garden side view shows the same partially cutaway front IA, FIG. 4 is a perspective view of the rotating frame 32, FIGS. 5 to 9 show the second embodiment, and FIG. 5 shows a partially cutaway part of the main part. :11 side view, FIG. 6 is the same side view, FIG. 7 is the same front view, FIG. 8 is the support frame 61,
An isolated perspective view of the sanding frame 67 shade, and FIG. 9 is a longitudinal sectional side view showing a holding means for the sanding frame 67. 4.5; Mounting frame 11: Vertical frame 30: Rough grinding device 32; Rotating frame 36; Rotation N] 37;
Sandy/Ku Frame 38, Tension Driven Roll
39: Drive roll 43; Rough grinding belt 50;
Polishing device 60: Rough grinding device 61; Support frame 65
; times iPJ+itl+ 67; sanding frame 68: tension driven roll "9; drive a
-/1. ;74, @ Screw applicant Takekawa Iron Works Co., Ltd. Agent Patent attorney Kita Matsuura

Claims (1)

[Claims] For installation that moves relatively toward and away from each other on both sides of the material feeding path, a frame is provided on both sides of the material feeding path, and rotation shafts are formed inwardly protruding from both frames in a direction perpendicular to the material feeding direction, and the rolls are pivoted up and down on the shafts. the sanding frame is supported, a rough grinding belt is placed around the roll, the grinding traveling part of the rough grinding heald faces the material feeding path, and the sanding frame is rotatable around the rotation axis. The running angle of the rough grinding belt is variable from perpendicular to the material feeding direction to an arbitrary angle, and a finish grinding and polishing heald is provided behind the rough grinding belt and runs in the same direction as the material feeding path. A double-sided grinding and abrasive belt machine that is mounted on the frame in a corresponding manner so that its grinding running part faces the material feeding path.