JPH0392261A - Wood finishing grinding machine - Google Patents

Abstract

PURPOSE:To obtain an even grinding surface by elevatably supporting a downsanding roll brush and an upsanding roll brush in the front position of a turning frame and in the rear position thereof respectively. CONSTITUTION:By turning a turning frame 20, roll brushes 41a and 41b are slanted so as to be optimum to the shape of a work. When the work is fed, the work is first ground by the downsanding roll brush 41a which rotates in the feeding direction of the work, and then is ground by the upsanding roll brush 41b which rotates in the direction reverse to the feeding direction, so that an even grinding surface can be produced. The chips produced by grinding are discharged between the roll brushes 41a and 41b because of the rotational relationship of respective rolls, thus they are collected to a section duct 22 through suction ports 23a, 23b arranged between the roll brushes 41a and 41b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a finish grinding machine for woodworking that performs finish grinding and polishing on the processed surface of a workpiece using a roll brush.

[Prior Art] A finish grinding machine for woodworking in which a roll brush is arranged perpendicular to the running direction of the workpiece is known, and this roll brush is used for super finish grinding. [Problems to be Solved by the Invention] Workpieces W supplied to a finishing grinder for woodworking using a roll brush have various shapes, such as those with inclined front and rear ends e, as shown in FIG. There is something. On the other hand, conventional roll brushes are fixedly attached at right angles or at a fixed angle to the material feeding direction, and grind uniformly regardless of the shape of the workpiece W. For this reason, there is a drawback that it is not possible to perform optimal grinding and polishing that corresponds to the shape of the workpiece W. The object of the present invention is to provide a finish grinding machine that can eliminate these drawbacks. [Means for Solving the Problems] The present invention rotatably supports a rotating frame on the upper part of a material feeding device, and a down-sanding type roll brush is provided at a front position of the rotating frame and a down sanding type roll brush is provided at a rear position of the rotating frame. The up-sanding type roll brushes are each supported so as to be movable up and down, and a suction duct is disposed in the center of the rotary frame, and the suction port is disposed between the two roll brushes. ．． [Operation] The rotary frame is rotated to incline the roll brush so as to best suit the shape of the workpiece W. When the workpiece W is fed, the workpiece is first ground by a down-sanding roll brush that rotates along the feed direction, and then by an up-sanding roll that rotates in the opposite direction to the feed direction. Grinded with a brush. The shavings generated by this grinding are discharged between the roll brushes due to the rotational direction of each roll, and are therefore collected into the suction duct from the suction port provided between the roll brushes. [Example] An example of the present invention will be described with reference to FIGS. 1 to 4. 1 is a machine frame, at the bottom of which a material feeding device 2 is arranged in the front-rear direction. To explain the structure of this material feeding device 2, a driving material feeding roll 4 and a driven material feeding material 5 are supported on the material feeding frame 3 at the front and rear ends protruding from the frame 1, and the material feeding roll 4,
A material conveying belt 7 is stretched around the roller 5, and the material conveying belt 7 is driven and driven by a material conveying motor 6 linked to the driving material conveying roll 5. The material feeding frame 3 can be adjusted up and down by rotating the handle 8. A rough grinding section I is provided at the front of the machine frame I. To briefly explain an example of the configuration of the movable grinding section I, the machine frame l
A traveling frame 10 is mounted on a guide rail 12 provided on the upper part of the conveyor, and the frame 10 is reciprocated by a drive device in a direction perpendicular to the name of the material to be transported. The traveling frame 10 is provided with roll brushes 11a and 11b driven by a drive motor. With this configuration, the roll brush l1a. 1lb are arranged at intervals in the front and back on the material conveying belt 7, and carry the processed material W.
Grinding is performed twice in sequence. At the rear position of the rough grinding part ■, there is a finish grinding part ■ according to the present invention.
is installed. The configuration of this finish grinding section ■ will be explained. A disk-shaped rotating base 2l that constitutes the upper end of the rotating frame 20 is mounted on the upper frame 1a of the machine frame 1, and the central suction duct 22 formed by the hanging part of the rotating frame 20 is mounted on the upper frame 1a. It hangs downward from a rectangular through hole 1b formed in the frame 1a. As clearly shown in FIG. 3, the upper frame 1a on the circumference of the rotating base 21 has a plurality of rotating frames circumscribing the circumferential edge of the rotating base 21 to maintain the rotation of the rotating frame 20. Guide roll 2
8 will be provided. Further, four guide arcs 24 are concentrically formed on the peripheral edge of the rotation base 21, and a screw shaft 25 protruding from the upper frame 1a is inserted into the guide arcs 24, and a tightening handle 26 is attached to the protruding end thereof. are screwed together, and in the tightened state,
While holding the position of the rotating frame 20, by loosening the tightening handle 26, the rotating frame 20 can be rotated using the rotating guide roll 28 and the guide arc 24 as a guide. A reinforcing frame 27 is provided on the rotating base 2l.
is provided. As shown in Fig. 2.4, below the upper frame 1a, a rotation shaft 3 is provided on the front and rear surfaces of the suction duct 22.
A holding frame 30.30 for supporting the l is provided. The rotation shaft 31 is linked to a left-right linking rod 33 supported by the suction duct 22 via a pair of wedge gears 35, and can be rotated by rotating a handle 34 provided at the end of the linking rod 33. The moving shaft 31 is rotated. The lower end of the rotation shaft 3l has a lifting platform 37a. 37b is screwed together. Therefore, due to the rotation of the rotation shaft 3l, the lifting platform 37a. 37
b is a vertical guide rod 39 provided in the suction duct 22;
Elevation and descent are controlled using the guide. The above-mentioned lifting platform 37a. Bearings 40 are provided at both ends of the lower surface of 37b.
40 respectively roll brushes 41a. 4lb is supported. Also, the lifting platform 37a. A rotary drive motor 43a. 43b, a pulley provided on its drive shaft, and a roll brush 41a. The rotary drive motor 43a. 43b, the roll brush 41a. I am trying to drive 4lb.

That is, as shown by the arrow in FIG.
A rotates the roll brush 41a clockwise in the same figure to make it a down-sanding type roll brush, and a rotary drive motor 43b rotates the roll brush 4lb counterclockwise in the same figure to make it an up-sanding type roll brush. ．． The roll brush 41a having such a configuration. Suction ports 23a and 23b extending in a bifurcated manner at the lower end of the suction duct 22 are arranged at an intermediate position of 4lb. The upper end of the suction duct 22 communicates with a recovery pipe in which a vacuum pump (not shown) is installed, and the suction port 23a. 23b produces a suction action for the grinding debris.

In the above configuration, the suction duct 22 is connected to the rotating frame 2.
0, and roll brushes 41a. Since the roller brushes 41a. By selecting the 4lb mutual sanding method, the polishing debris is collected in the center, making it possible to collect the polishing debris using a single suction duct 22, resulting in a well-organized configuration. In addition, a plurality of presser rolls 47 are pivotally supported on the upper part of the material conveying belt 7. Next, the operation of the above embodiment will be explained. First, the tightening handle 26 is loosened, and the rotating frame 20 is manually rotated according to the shape of the workpiece W using the rotating guide roll 28 and the guide arc 24 as guides. As a result, the roll brush 4
1a. 4lb, give the workpiece W the required inclination corresponding to its shape. That is, as shown in FIG. 5, the front and rear edges e1. : If there is a slope, its front and rear edges e,
Roll brush 41a. Adjust the inclination in advance by making the 4lb axis parallel.

After such preparation, the drive material feed roll 5 is driven and the material feed belt 7 is run, and then the workpiece W is fed onto the material feed belt 7, and the workpiece W runs while being pressed by the presser roll 47. , first, in the movable grinding section I, a roll brush lla. reciprocates along a guide rail l2. Rough grinding and polishing is performed by llb. After the rough finish grinding in the rough grinding section (■), super-finish grinding is further performed in the next finish grinding section II. This finish grinding part I
In step I, the roll brush 41a rotates along the feeding direction of the workpiece W to perform down sanding on the upper surface of the workpiece W. Further, the roll brush 4lb rotates in a direction opposite to the feeding direction of the workpiece W, and performs up-sanding on the upper surface of the workpiece W6.However, the workpiece W is subjected to down-sanding and up-sanding, resulting in unevenness. At the same time, the required inclination corresponding to the workpiece W is polished by the roll brush 4la. Since it is applied to 4lb, the polishing surface is good. This roll brush 41a. The polishing debris of the workpiece W that has been ground and polished by the 4lb.
a. It is sucked from 23b.

In the above configuration, the rotation of the rotation frame 20 may be adjusted by a drive motor, and in this case, various interlocking mechanisms such as forming a gear meshing with a drive gear on the circumference of the rotation base 21 are used. can be adopted. [Effects of the Invention] As described above, the present invention makes the rotary frame 20 rotatable, and the rotary frame 20 has a down-sanding roll brush 41a at the front and an up-sanding roll brush 4lb at the rear. are arranged respectively, and a suction duct 22 is formed in the center of the suction port 23a.
．． 23b with the roll brush 41a. 4lb, so a) Roll brush 4 can be adjusted at will depending on the form of the processed material W.
1a. A tilt angle of 4lb can be selected, allowing for good grinding and polishing. b) Roll brush 41a. 4lb is used for down sanding and up sanding,
It can produce an evenly polished surface. c) Suction duct 22 and roll brush 41a. 4lb is assembled into a rotating frame 20 to form a unit and can be rotated as a unit, so the structure is cohesive. 2) Roll brush 41a. The polishing debris is collected between 4 lbs., and can be collected without any trouble using a single suction tact 22. Combined with the unitization described above, the entire device becomes compact. It has excellent effects such as

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 shows a rough grinding section I.
2 is a left side view, FIG. 3 is a plan view, FIG. 4 is a partially cutaway plan view, and FIG. 5 is an explanation showing an example of the grinding mode for the workpiece W. This is a diagram. 2... Material feeding device 2 0-... Rotating frame 2l... Rotating base 22... Suction duct 23a. 23b-...Suction port 41a...One roll brush 4lb...Roll brushina, ;till=/

Claims (1)

[Claims] A rotating frame is rotatably supported on the top of the material feeding device,
A down-sanding type roll brush is supported at the front position of the rotating frame, and an up-sanding type roll brush is supported at the rear position of the rotary frame so as to be able to rise and fall, and a suction duct is disposed at the center of the rotating frame. A finish grinding machine for woodworking, characterized in that a suction port is disposed between the roll brushes.