JP2507488Y2 - Wide belt sander - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a wide belt sander machine applied to grind and polish wood and the like. More specifically, the height of the front roll and the rear roll can be changed with respect to the tread pressure pad, and various grinding can be performed. The present invention relates to a wide belt sander machine capable of producing a polishing mode.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Laid-Open No. 60-53453, one of a front roll and a rear roll is a rubber roll, and the other is a metal roll so that both rolls can be moved up and down. Selectively approach the material feeding device side to press it against the processed material through the endless sanding belt to grind and polish it, or select the treading pad between the front roll and the rear roll at the lowest position to polish the pad. A configuration has been proposed in which it is possible to perform the grinding and polishing, and a plurality of modes of grinding and polishing such as light grinding and heavy grinding can be performed by selecting the elevation of the roll.

Further, the endless sanding belt includes paper,
In addition to the application of a thin belt x of cloth or the like, a non-woven belt has come to be applied in order to polish the surface to be ground, improve the finish, and make the paint surface more beautiful. This non-woven belt has a wall thickness of 5 to 10 mm, and when the non-woven belt is used as it is in a wide belt sander machine in which the position of each member is adjusted for thin belts, the ground end of the non-woven belt is on the running material passage side. Will be projected. Therefore, in order to make it possible to apply the belts having different thicknesses to the same base, as disclosed in Japanese Patent Application No. 60-222301, there has been proposed a structure capable of adjusting the height of rolls. .

As described above, the height of the front roll and the height of the rear roll can be adjusted separately, and there is a growing demand for the ability to change the grinding mode and the belt thickness. .

[0005]

Although various types of rolls capable of adjusting the heights of the front roll and the rear roll as described above have been proposed, the heights are adjusted for each roll. However, there is a drawback that the adjustment is troublesome. An object of the present invention is to provide a wide belt sander machine capable of easily adjusting the heights of the front roll and the rear roll.

[0006]

According to the present invention, a front roll, a rear roll, and a tread pad are mounted on a tilting frame, and one of the tilting frame and the sanding frame is provided with an arcuate guide groove, and the other is provided with the guide groove. The tilting frame is rotatably supported by the sanding frame by providing an arcuate projecting edge that fits in the groove and slides.

[0007]

When the tilting frame is tilted with respect to the sanding frame by the guide action of the arcuate guide groove and the arcuate projecting edge with the center of the arc as a pivotal fulcrum, the height of the front roll, the rear roll and the tread pad is increased. The position will change. Therefore, in the steady position where the tread pad between the front roll and the rear roll is at the lowest position, pad grinding can be performed in which the tread pressure of the tread pad acts on the work material, and the tilting frame can be moved to the left or right. If the front roll or the rear roll is inclined, the roll grinding can be performed with the lower edge of the front roll or the rear roll at the lowest position.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an outline of a wide belt sander machine of the present invention. A lower part of a main body frame 1 is provided with a material feeding device 5 in which a material feeding belt 4 is stretched between traveling rolls 2 and 3. A sanding frame 7 is provided on the main body frame 1 at a position above the material feeding device 5.

At the upper end of the sanding frame 7,
A steering roller 8 and a tilting frame 9 to be described later are tiltably supported at the lower end thereof, and a front roll (driving roll) 10 having a large diameter is provided at the front position of the tilting frame 9 and at the rear position thereof. A rear roll (following roll) 11 is arranged, and the belt traveling roll group 8, 10, 11 constitutes a drive mechanism. Further, as shown in FIG. 2, the front roll 10 has a pulley 15 provided at the shaft end thereof, around which a drive belt 16 is stretched to apply a driving force. Further, a treading pad device 12 is fitted between the rolls 10 and 11 of the tilting frame 9, and the endless sanding belt 6 is stretched around the pad surface 13 of each roll and the treading pad device 12 in a tension state.
A material feeding passage 14 is provided between the material feeding device 5 and the tread pad device 12.
Is formed. In addition, the sanding frame 7
A plurality of pressing rolls 17 that are pressed by the ammunition machine 15 toward the material feeding device 5 side are provided in the upper part of the material feeding passage before and after.

The tilting frame 9 is rotatably supported by the sanding frame 7, and its detailed structure will be described with reference to FIG. A mounting hole portion 20 is formed at the lower end of the sanding frame 7, and the mounting hole portion 2
Arc-shaped guide grooves 21 and 21 are formed on the front and rear inner walls of 0 so as to face each other. Then, the arcuate projecting edges 24, 24 at both ends of the arcuate hanging plate 23 fixed to the upper end of the fitting upper portion 22 of the tilting frame 9 are fitted into the arcuate guide grooves 21, 21, and the tilting frame 9 is fixed. It is rotatably supported along the arc-shaped guide grooves 21 and 21 with the center of the arc as a fulcrum. Further, an arcuate rack 26 is fixed to the central portion of the hanging plate 23, and a pinion 30 fixed to a drive shaft 29 of a reversible control motor M supported by bearings 28, 28 in the mounting hole 20 is provided. It is adapted to engage with the rack 26. A stopper 32 is fitted on the upper edge of the pinion 30 to prevent its rotation. The stopper 32 is fixed to the tip of a holding rod 35 that is inserted into a sliding hole 34 of the sanding frame 7. By pulling a grip 37 provided at the tip of the holding rod 35, a sliding notch 38 is formed. It is possible to move backwards and evacuate backwards. Further, the holding rod 35 is brought into two positions by a moderation ball 40 provided facing the sliding hole 34 being brought into contact with one of the locking grooves 42a and 42b formed in the holding rod 35 by the action of the spring 41. Selectively retained. At the position shown in FIG. 2, the moderating ball 40 is held in a fixed position by elastically contacting with the locking groove 42a.

In such a structure, when the reversible control motor M is driven in a state in which the grip portion 37 is pulled to retract the stopper 32 and the pinion 30 is rotatable, the pinion 30 rotates and the rack is rotated. 26 is an arc-shaped guide groove 2
The tilting frame 9 can be rotated in any of the left and right directions about the arc center of the arc-shaped guide grooves 21 and 21 as a fulcrum.

At the steady position of the tilting frame 9, the pedal pressure pad device 12 is positioned at the center position in FIG. 1, the pedal pressure acts on the inner surface of the endless sanding belt 6, and the work material is the pedal pressure pad device 12. It is ground and polished by. On the other hand, when the reversing control motor M is driven to rotate the tilting frame 9 in the clockwise direction in FIG. 1, the lower edge of the front roll 10 is located below the tread surface of the tread pad apparatus 12, and the endless sanding belt. 6 is pressed against the processed material at the lower edge of the front roll 10 and is subjected to heavy grinding and polishing. Similarly, when the tilting frame 9 is rotated counterclockwise in FIG. 1, the lower edge of the rear roll 11 is located below the tread pad device 12, and the rear roll 11 presses the endless sanding belt 6 against the work material. It will be.

For this reason, for example, by using one of the front roll 10 and the rear roll 11 as a rubber roll and the other as a metal roll, different forms of roll grinding are possible, and pad grinding and polishing by the tread pad device 12 is possible. Therefore, the three types of grinding / polishing modes can be performed only by the drive control of the reversible control motor M. Further, even when the material of the endless sanding belt 6 is changed and the grinding height position is adjusted due to the change in the thickness thereof, the drive control of the reversible control motor M can be easily performed.

[0014]

According to the present invention, as described above, the tilting frame 9 in which the front roll 10, the rear roll 11, and the tread pad device 12 are mounted on the sanding frame 7, the arc-shaped guide grooves 21, 21 and the arc-shaped projections are provided. Since it can be rotated to a desired position by combining with the edges 24, 24, any one of the front roll 10, the rear roll 11, and the tread pad device 12 is arbitrarily set to the lowest position only by adjusting the rotation position. Therefore, it is possible to easily select various grinding modes and adjust the thickness of the endless sanding belt 6 and to easily perform the adjustment control only by rotating the tilting frame 9. effective.

[Brief description of drawings]

FIG. 1 is a schematic front view of a wide belt sander machine according to the present invention.

FIG. 2 is a vertical sectional side view of a main part.

[Explanation of symbols]

 6 Endless sanding belt 7 Sanding frame 9 Tilt frame 10 Front roll 11 Rear roll 12 Treading pad device 21,21 Circular guide groove 24,24 Circular ridge 26 Rack 30 Pinion M Reversible control motor

Claims (1)

(57) [Scope of utility model registration request] 1. An endless sanding belt is looped over a plurality of belt running roll groups provided on a sanding frame,
In a wide belt sander machine in which a tread pressure pad is arranged between a front roll and a rear roll arranged on the material feeding passage side of the belt traveling roll group, and the tread pressure pad is brought into contact with the inner surface of the belt, the front portion The roll, the rear roll, and the treading pad are mounted on a tilting frame, and one of the tilting frame and the sanding frame is provided with an arcuate guide groove, and the other is provided with an arcuate projecting edge that is fitted and slid into the guide groove. A wide belt sander machine, wherein a tilting frame is rotatably supported by the sanding frame.