JPH02172664A - Grinding and polishing device for wood working machine - Google Patents

Abstract

PURPOSE:To improve a profile action for a working material by forming a slit group on the surface of a pressure fitting roll. CONSTITUTION:A desired grinding wheel 20 is made by forming a slit group 26 on the outer peripheral face of a pressure fitting roll 23 consisting of soft materials and providing peripherally a polishing belt 25 on the press-fitting roll 23. Thus, the elastic capacity of the grinding wheel 20 is improved, the grinding wheel 20 is profiled to the surface of the work W to be fed and this surface is uniformly subjected to polishing.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention uses a grinding wheel, an endless sanding mechanism, etc., which uses a pressing roll to bring an abrasive band disposed around the roll into contact with a workpiece. , relates to a grinding and polishing device for a wood processing machine that performs grinding and polishing.

<Problems to be Solved by the Invention> When grinding a workpiece W with an abrasive band disposed around the pressing roll, for example, as shown in FIG. 2, the grinding surface of the workpiece W has a curved surface. If there is an uneven surface, as in the case of an uneven surface, the polishing band cannot be uniformly traced over the surface to be processed, resulting in uneven polishing. Furthermore, even if the pressure roll is an elastic body, its tracing action cannot be said to be sufficient.Therefore, a roll with an uneven surface that matches the shape of the pressure roll is formed, and the grinding process is performed using the roll. If it is a means, there is a drawback that a roll must be manufactured every time the uneven shape changes.

An object of the present invention is to provide a grinding and polishing apparatus that can uniformly apply the tracing action of the pressure rolls and grind and polish flat and uneven surfaces with the same roll.

<Means for Solving the Problems> The present invention is first characterized in that a group of slits are formed on the outer peripheral surface of a pressure roll made of a soft material, and an abrasive band is provided around the pressure roll. It is something to do.

Secondly, in order to further improve the tracing action, slit groups are also formed in the abrasive band provided around the pressure roll.

Furthermore, thirdly, the pressure roll is formed with a suction roll on the outer peripheral surface thereof, and the pressure roll is made of a breathable material, and an air passage communicating with the outside via the pressure roll is formed on the roll shaft. However, a reduced pressure source or a pressurized air source is connected to the air passage to produce a suction effect or a pressurized effect.

<Function> In the first means, since the slit group is formed on the outer circumferential surface of the pressure roll, the slits provide good elasticity and contraction ability, making it easier to follow the workpiece W.

In addition, when slits are formed in the abrasive band as in the second method, the abrasive band can follow the tracing action of the pressure roll with slit groups formed on the outer circumferential surface and perform polishing well. Become.

Furthermore, in the third means, the abrasive band is brought into closer contact with the surface to be processed by the suction action of the reduced pressure source or the pressurizing action of the pressurized air source. In other words, in the suction action, the processed material W
Supplements the tracing action on the convex portion of the workpiece W, and supplements the tracing action on the concave portion of the workpiece W in the case of pressurizing action.

<Example> An example of a wood processing machine to which the present invention is applied will be described with reference to Fig. 1.2.

Reference numeral 1 denotes a machine frame, and a material feeding device 2 is disposed at the bottom thereof in the front-rear direction.

To explain the configuration of the material feeding device 2, the material feeding frame 3
is provided with a driven material feed roll 4 and a driven material feed roll 5 driven by a material feed motor 6 at the front and rear ends protruding from the machine frame 1, and the material feed rolls 4 and 5 are provided with numerous ventilation holes. The material conveying belt 7 with holes formed therein runs over the belt. A plurality of presser rolls 8 are pivotally supported on the upper part of the material feeding device 2.

Further, in the material feeding frame 3, there is a grinding head 1 to be described later.
At positions 3a and 13b, suction ports 9 are disposed inscribed in the upper part of the running portion of the material conveying belt 7 to suck the workpiece W onto the belt surface. The material feeding frame 3 is supported by a screw shaft (not shown), and can be adjusted up and down by rotating the handle 10 to screw the screw shaft. The suction port 9 is connected to a vacuum device (
(not shown).

An installation machine 11 is placed across the upper part of the machine frame 1 in the width direction, and dovetail guides 12.12 are formed on the front and rear surfaces of the installation machine 11.
Mounting frame 14.14 for grinding heads 13a, 13b
are installed so that they can be raised and lowered. By rotating the vertical lifting screw 15 screwed onto the mounting frame 14 and held by the installation machine 11 using the handle 16, the mounting frame 14 is moved along the lifting screw 15 and the dovetail guide 12. I try to go up and down. A grinding wheel 20.20 according to the present invention is rotatably supported on the mounting frame 14 by bearings 17a and 17b, as shown in FIG.
It is rotated by drive motors 18, 18 disposed on the mounting frame 14 via a belt interlocking mechanism 19. Further, the mouth end of the duct 21 for discharging grinding debris can be seen on the lower side of the grinding wheel 20.20.

Next, the configuration of the grinding wheel 20 according to the present invention will be explained in detail.

In FIG. 2, the grinding wheel 20 includes a drive shaft 22 connected to a belt interlocking mechanism 19 and a pressure roll 23 made of a soft material such as sponge fitted onto the drive shaft 22.
An abrasive band 25 made of cloth abrasive paper is wrapped around the periphery of the abrasive material.

A slot group 24 consisting of countless slits S is formed on the outer circumferential surface of this pressure roll 23.

This slit group 24 includes a slit group 24a in which a large number of concentric endless slits S are arranged in the axial direction as shown in FIG. There is a pickpocket group 24b.

In addition, the slit group 24 is c −
Various forms of s can be proposed.

The abrasive band 25 may be formed of stretchable abrasive paper so as not to impair the tracing action of the slit group 24 of the pressure roll 23, and can follow the bending of the surface of the pressure roll 23.

As a means for more effectively drawing out the tracing action by the slit group 24, a slit group 26 may also be formed in the abrasive band 25 as shown in FIG. 20, the slits S of the slit group 24 try to open following the surface to be processed, but the slit group 26 of the abrasive band 25 also follows this action, and the slit group 24 of the pressure roll 23 attempts to open its mouth. The effect will be put to good use.

In forming such slit groups 24 and 26.

An abrasive band 25 is provided around the pressure roll 23, and then.

By forming the slits S through the abrasive band 25 and the pressure roll 23 from the surface, the slit group 24 and the slit group 26 can be formed in the same form.

In FIG. 3, the pressure roll 23 is formed of an air-permeable material such as sponge, and the drive shaft 22 of the pressure roll 23 is formed into a tubular shape with an air passage 27 formed therein. A vent hole 28 is formed, and the air passage 27 is communicated with a vacuum pump. As a result, the outside air passes through the pressure roll 23 to the air passage 27.
This action reinforces the elastic action of the pressing roll 23, and when the pressing roll 23 presses the abrasive band 25 against the uneven surface of the workpiece surface, it further improves the tracing action on the convex surface side, and the slit In cooperation with the action of the group 24, the abrasive band 25 is made to closely follow the surface of the workpiece W.

When the air passage 27 is connected to a pressurized air source,
The pressurizing action reinforces the press roll 23 on the press side,
It is possible to further improve the tracing action on the convex side of the processed surface.

In addition, as shown in FIG. 8, a grinding wheel 20,
It may be inclined by 5° to 15° with respect to the traveling direction of the workpiece W. This inclination further improves the tracing effect and allows uniform finishing polishing.

FIG. 9 shows an endless sanding mechanism 30 in which a pressure roller 31 is disposed below, a tension roller is disposed above, one of which is used as a driving roller, and an endless abrasive belt 33 is passed between the rollers 31 and 32. This is a grinding and polishing device provided at the front and rear, and the other configurations are the same as those in FIG.

Even in this configuration, the slit group 24 is formed on the circumferential surface of the endless sanding mechanism 30. Further, the abrasive band 33 may be made of elastic abrasive cloth or may have slit groups 26 formed on its surface in order to improve its followability to the tracing action of the endless sanding mechanism 30. It can also be inclined with respect to the running direction of the material W. Furthermore, an air passage can be formed in the roll axis of the pressure roll 31, and a reduced pressure source or a pressurized air source can be connected to the air passage.

<Effects of the Invention> As described above, in the present invention, since the slit group is formed on the surface of the pressure roll, the tracing action on the workpiece W is improved, and even if the workpiece surface has unevenness due to a curved surface, etc., the slit group is formed on the surface of the pressure roll. It can be ground and polished according to the pattern. Therefore, flat surfaces and uneven surfaces can be processed using the same pressing roll, and there is no need to manufacture pressing rolls for each uneven surface shape.

In this case, if a group of slits is also formed on the abrasive band, the tracing action of the group of slits of the pressure roll can be effectively brought out.

In addition, in a configuration in which an air passage is formed in the roll shaft and a reduced pressure source or a pressurized air source is connected to the air passage, the abrasive band 25 is further attached to the workpiece W due to the suction action or pressurization action of the air. There are excellent effects such as being able to increase the copying effect by closely adhering and cooperating with the action of the slit group of the pressure roll.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention, in which FIG. 1 is a front view showing an example of a grinding and polishing device, FIG. 2 is a vertical side view showing a grinding wheel 20, and FIG. 3 is a pressure roll equipped with an air passage 27. Longitudinal side view showing the grinding wheel 20 with 23, No. 4
5 is a perspective view of the pressure roll 23 equipped with a slit group 24a, FIG. 6 is a plan view of an example c-s of the slit group 24, and FIG. FIG. 7 is a perspective view of the grinding wheel 20 with a group of slits 26 on the abrasive band 25, FIG. 8 is a schematic plan view of the configuration in which the pressure roll 23 is inclined with respect to the material feeding direction, and FIG. 9 is a side view of the endless sanding machine. 30 is a front view of a grinding and polishing device equipped with a 20...Grinding wheel 22...Drive shaft 23...Press roll 24...Slit group 25...Abrasive band 26...-Slit group 27...Air passage 30...Endless Sunday 31...・・Pressure roll 33 ・・Abrasive band W ・・Working material handling mechanism Pa J5 20th Fig. 85 Fig. 3 Fig. 8

Claims (1)

[Claims] 1) A press roll that presses against the workpiece fed by the feed device via an abrasive band is formed of a soft material, and a group of slits are formed on the circumferential surface of the roll. Grinding and polishing equipment for wood processing machines. 2) A pressure roll that presses against the workpiece fed by the material feeding device via an abrasive band is formed of a soft material, a group of slits are formed on the circumferential surface of the roll, and an abrasive roller is provided around the pressure roll. A grinding and polishing device for a woodworking machine characterized by having slits formed in the band as well. 3) A pressure roll that presses against the workpiece fed by the material feeding device via an abrasive band is formed of a breathable soft material, and a group of slits is formed on the circumferential surface of the roll, and a pressure roll is attached to the roll axis. 1. A grinding and polishing device for a woodworking machine, characterized in that an air passage communicating with the outside is formed through the air passage, and a reduced pressure source or a pressurized air source is connected to the air passage.