JPH0283158A - Feeding mechanism for sand paper in polishing device - Google Patents

Abstract

PURPOSE:To reduce the feeding of the work stock of a polishing device and the driving resistance in driving of a sandpaper side and to improve the polishing performance of an uneven bar face by extending a sandpaper in the direction crossing with the feeding direction of the work stock. CONSTITUTION:A belt like sandpaper 26 is spread in a cross direction for the feeding direction of the work stock 8 located on a table 4. This sandpaper 26 is delivered by a delivery mechanism intermittently and quantitatively according to the quantity of its consumption along the work stock 8 feeding direction with being pressed by a pad 43. Consequently, the adhesion of the sandpaper 26 and pad 43 is improved and also the belt like sandpaper 26 is renewed frequently, and an uniform polishing face is obtainable as a whole or even compared with other work stocks.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention is mainly used for polishing wood of furniture, fittings, etc.
In other areas where it can be functionally applied, the present invention relates to a sandpaper supply mechanism in a polishing device used for polishing synthetic resins or metals.

B) Conventional technology C) Frames of doors and decorative boards, which are generally used for furniture and fittings, etc., and which have linear uneven stripes along the outer periphery, can also be used in the same way as other decorative surfaces. ! After machining and forming uneven stripes, the material is polished and the painted surface is polished.

For example, arc-shaped uneven strips 51a and 51 as shown in FIG.
When mechanically polishing the surface of the frame material (processed material) 51 on which the shape b is formed, the processed material 51 is placed on a straight table 52 and fed linearly, as shown in the W2B diagram.
An endless belt-like sandpaper 54 is stretched over the rollers 53.53 along the direction in which the workpiece is fed, and while the belt is driven in the opposite direction to the feed direction, the rollers 53.53 open sandpaper 54
A device is known in which the material is pressed against the surface of the workpiece using a bat 55, and the pressing surface of the bat 55 has an uneven surface along the uneven lines 514 and 51b.

<Problems to be Solved by the Invention> However, there are the following problems in those using conventional belt-shaped sandpaper.

b) Strong tension is generated in the belt-shaped sandpaper, and when it is pressed with a bat, the peaks of the workpiece are strongly polished, but the valleys and steep slopes are poorly polished, and there are deep grooves and narrow grooves. , it is impossible to polish a part of the corner at the end of the workpiece.

As mentioned above, the contact pressure of the belt against the uneven surface is uneven, so if the valley (groove) parts are sufficiently polished, the peak parts will be over-polished, and when polishing after painting, there will be parts where the paint is scraped off, so this method It is impossible to polish the painted surface.

C) Because the bat is pressed against the inner surface of the driving belt, the back of the belt and the bat are subject to severe wear, making it necessary to attach wear-resistant resin to the pad surface or add wear-resistant materials such as graphite.
There is a large loss in terms of labor and cost.

2) Since the butt is pressed against the driving belt and gives resistance, the driving force of the belt-shaped sangu becomes excessive and it is necessary to firmly clamp the workpiece onto the bed. It is not economical, as it is necessary to use a belt and increase the power of the feed drive.

e) Since the entire sandpaper is always used, there is a large difference in polishing performance between the beginning of use and the end of use (at the end of its life), resulting in variations in finishing accuracy.

f) In the conventional belt type, as shown in Fig. 9, unless the pad width is narrower than the belt width, the belt-shaped sandpaper will come off the bat, resulting in an uneconomical situation in which the entire belt cannot be used.

Means for Solving the Problems> The present invention solves the above-mentioned problems, and provides a sandpaper that has particularly low drive resistance in feeding the processed material of the polishing device and drive on the sandpaper side, and has good polishing performance on uneven striped surfaces. The first invention is to provide a feeding mechanism, and the first invention comprises a table 4 on which a workpiece 8 is placed and fed in a fixed direction, and a belt stretched so as to be close to a processing surface 8a of the workpiece 8. In the M structure, the sandpaper 26 is provided with a sandpaper 26 having a shape of 26, and the polishing surface of the sandpaper 26 is pressed against the processing surface 8a to polish the processing surface 8a. It is characterized by being stretched in the direction of

In addition to the features of the first invention, the second invention of the present application includes a table 4 on which the workpiece 8 is placed and fed in a certain direction, and a table 4 that is stretched so as to be close to the processing surface 8a of the workpiece 8. A belt-shaped sandpaper 26 is provided, and the polished surface of the sandpaper 26 is pressed against the processing surface 8a to remove the processing surface 8a.
In the mechanism for polishing, the sandpaper 26 is stretched in a direction that crosses the feeding direction of the workpiece 8, and the sandpaper 26 is fed intermittently and quantitatively according to the amount of the surface to be used. 8! It is characterized by having a structure.

<Function> Since the belt-shaped sandpaper 26 is stretched in a direction that intersects the feeding direction of the workpiece 8 on the table 4, the sandpaper 26 is held down by the bat 43 and is moved little by little along the workpiece feeding direction. It can be made into a reciprocating mechanism, and the adhesion of the bat and belt to the processing surface is improved.

Furthermore, since the sandpaper 26 can be supplied intermittently in a fixed amount, the sandpaper 26 is frequently replaced with a new one (ffl).
s minute), resulting in a uniformly polished surface compared to the entire or pond processed material.

<Embodiment> To describe in detail the embodiment of the present invention illustrated below, the body 1 of the polishing device includes a main body 7 frame 2 which houses a feeding drive device, etc., and a frame 2 erected on the side of the rear end of the main body frame 2. Ru Post 7 Ray! 3, and on the front end of the main body frame 2, a table 6 is installed in the left and right longitudinal direction, and has a mounting surface 6a with a horizontal upper surface and a straight guide 4 projecting from the rear end in the left and right direction. ing. Inside the table 6, the peripheral surface is the above-mentioned placement surface 6.
Feed rollers 7 slightly protruding from a are arranged parallel to each other in the front and back direction and are pivotally supported, and the rotation of the feed rollers 7, the mounting surface 6a, and the guide 4 move the workpiece 8 (see tpJs diagram and FIG. 7). ) is sent linearly in the left and right direction.

An elevating slide device 9 is installed on the upper right side of the post frame 3.
The arm 7 frame 11 is attached to the arm 7 frame 11 so as to protrude forward and can be vertically adjusted, and two upper and lower idle rods 12 are attached in parallel in the left and right direction within the tip of the arm 7 frame 11. . Two left and right sliders 13.13 are supported on the guide rod 12 so as to be movable left and right, and each slider 13 is provided with plate-shaped brackets 14 that face parallel to each other and protrude toward the front side. There is.

A sander frame 1 is provided on the inner side of each bracket 14 above.
6 are installed in the vertical direction, each sander frame 16 is pivoted by a mounting shaft 17 at the bottom, and a fixing screw 1 at the top
8, it is fixed in a tilt-adjustable manner.

Reference numeral 19 denotes an arc-shaped adjustment hole through which the fixing screw 18 is inserted, forming an arc centered on the mounting shaft 17.

The sander frame 16 has a vertically elongated box-like side surface as shown in Figs. thunder frame 1
A swinging arm 23 is rotatably supported at the upper end on both front and rear sides of the lower part of the swinging arm 23, and an f-section roller 25 is rotatably mounted on the outside of the tip of each swinging arm 23 via a bearing 24. It is pivoted. The top roller 22, the bottom roller 25.
An endless belt-shaped sandpaper 26 (note: not limited to the belt material) is wrapped around the outer circumference of the swing arm 25, and each swing arm 23 has a spring (not shown) with the lower end always facing outward. The tension of the sandpaper 26 is maintained by the opening and closing force of the swing arm 23.

The outer part on the bearing bracket 21 is the top roller 22
Adjust the vertical inclination of the shaft 27 of the sandpaper 26
It has a mechanism that allows adjustment of the left and right movement of the
An f4ffli screw 28 and a return spring 29 are provided. The outer end of the pongee 27 is pushed down with the adjustment screw 28 to tilt it downward, and when it is loosened, the spring 29 tilts it upward.

In addition, a child en-wheel 3 is located outside the top roller 22.
1 is concentrically mounted on the shaft, and the child en-wheel 31 rotates together with the top roller 22 only when rotating in a certain direction due to a built-in ratchet Wi mechanism (not shown), and idles when rotating in the opposite direction. It has become. and the fourth
As shown in the figure and FIG. 6, a chain 32 is wound around the child en-wheel 31, one end of the chain is attached to a rod of an air cylinder 33 attached to the outside of the sander frame 16, and the end of the chain is attached to a rod of an air cylinder 33 attached to the outside of the sander frame 16. The springs 34 are each connected to the free ends of the retraction springs 34. By reducing the shilling 33, the top roller 22 is rotated by a certain angle, and the sandpaper 26 is
When the sill ring 33 is released by rotating it by a certain amount, the child en-wheel 31 is returned to its original position by the spring 34.

The sandpaper 26 is fed out intermittently and quantitatively by the feeding mechanism 35 configured as described above, and the sandpaper is replaced with new one at the butt 43 portion, which will be described later.

Above the Sangu 7 frame 16 is an air shilling 3.
6 is housed and attached in the vertical direction, and the tip of a cylinder rod 37 at the lower end thereof is connected to a pad pressing rod 39 via a release mechanism 38 that releases the stroke of the rod. Spring receiver 41 and relief 8 attached to cylinder rod 37! A cushion spring 42 is inserted between the cylinder rod 37 and the cylinder rod 38, and the pushing force of the cylinder rod 37 is released. 438 and is released, but the pressing force is transmitted to the pressing rod 39 via the spring 42.

The tip of the pressure rod 39 is sander 7ray A 1677)
A belt-shaped sandpaper 26 is protruded from the lower end so as to be slidable, and at its tip is located between the lower rollers 25.25.
A pad 43 that presses the surface 8a of the workpiece 8 against the workpiece surface 8a is detachably attached. The punt 43 is made of elastic rubber or synthetic resin, and is fixed on its upper surface to a pad base 44 by adhesion or the like, and the bat base 44 is attached to the pressing rod 39.

The pad 43 is shaped like a rectangular block with the left and right upper or lower corners cut out at a notch 46, as shown in FIG. It has a shape. This is to enable polishing up to part of the corner of the frame-shaped workpiece 8, as shown in the figure.

The lower surface of the pad 43 has an uneven surface that matches the irregularities of the surface shape (processed surface) of the workpiece 8, and a uniform cut 47 is formed in the front-rear direction on the lower surface of the pad 43.
It has a structure that improves compatibility with the irregularities on the surface of the workpiece when it returns from side to side, improving polishing performance.

1 in arm frame 11! As shown in FIG.
．． A crank ('11 mechanism 63, 63) is provided at each stage at the shaft end of the shaft 62, and each crank mechanism 63 is connected to the back surface of a slider 13 that moves left and right on the idle rod 12.

As a result, the crank mechanisms 63, 63 are simultaneously rotated in reverse by the motor 48, causing the pair of sliders 13, 13, that is, the sander frame 16, to slide back and forth in opposite left and right directions, and the puffs 43, 43 are also rotated in opposite directions. Return to direction.

To polish the workpiece 8 using the above device, place the workpiece 8 horizontally on the table 4 with its uneven surface facing upward, and apply sandpaper 26 to the surface with the two pads 43. While closely pressing and rotating the feed row 27, the workpiece 8 is sent to the left or right direction, and the bat 43.43
The machined surface is polished by the reciprocating motion of the motor 48 (which is driven back and forth in left and right opposite directions, separately) 43.43.

When the polishing performance of the sandpaper 26 decreases due to the above-mentioned polishing, the air sill ring 33 is driven to remove the sandpaper 26.
Puff 6) 43. Just send out the necessary length corresponding to the front and rear width of 43, and then sand it again with new sandpaper. During these polishing operations, the height of the butt 43 is adjusted by the lifting/lowering slide device 9, the pressing force thereof is adjusted by the shilling 36, and the inclination of the throat 43 in the front and rear direction is adjusted by moving the sander frame 16 around the mounting shaft 17. It swings appropriately and is adjusted and set by tightening with the fixing screw 18. At this time, if the workpiece 8 does not contact the feed guide 4, a straight auxiliary guide (not shown) is connected to the feed guide 4. Along,
Alternatively, it can be fixed independently, or it is also possible to have an m structure in which the feed guide 4 is adjusted by moving after 111j.

<Effects of the Invention> Since the present invention is configured as described above, it is easier to adapt the bat or sandpaper (-) to the machining surface, compared to the conventional case in which belt-shaped sandpaper is fed along the feed direction of the workpiece. It has the advantage of having good polishing properties and adhesion, and being able to provide uniform, accurate polishing with a good finish regardless of the wood abrasive material or type of polishing.

In addition, belt-shaped sandpaper can be fed intermittently from the side in the material feeding direction, so it is possible to sand with new sandpaper as needed or always.
Uniform polishing performance can be obtained.

In addition, by moving the bat back in small increments in the material feeding direction, the entire width of the belt can be used, which is economical.

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention apparatus, FIG. 1 is an enlarged perspective view of the polishing part of the present invention apparatus, tpJ2 is a plan view showing the polished state of the workpiece, and FIGS. 3 to 7 FIG. 5 is an overall front view, a side view, and a plan view showing the inside of the polishing apparatus of the present invention. 6 and 7 are a front view and a side view of the main part showing the structure of the sander 7 frame part, and FIGS. 8 and 9 are a front view and a side view of the main part showing the principle of a conventional polishing device. 4: Table 8: Processing material 8a: Processing surface 26: Sandpaper 35
: Feeding mechanism 43: Bat Figure Figure Figure Figure Figure Figure Figure 8 (Processed material) Figure Procedure Amendment (Voluntary) January 19, 1999 1, Indication of Case 1988 Patent Application No. 23424 .3 No. 2, Name of the invention Sandpaper supply mechanism in a polishing device 3, Relationship with the case of the person making the amendment Patent author Address 17B4-20 Sendo, Kanuma City, Tochigi Prefecture Name
Sutegi Numao 4, Agent 〒
110 TILO3 (83519492 Name (
8167) Patent attorney Makoto Kono (and 1 other person) 5. Date of amendment order 6. Subject of amendment 1. The following points in Memorandum M of the present application are amended. 1. The claims from page 1, line t55 to page 2, line 4 are amended as follows. 1) A table plate on which the workpiece (8) is placed and sent in a certain direction; and a belt-shaped sandpaper (26) stretched close to the workpiece surface (8a) of the workpiece (8). , and the polished surface of the sandpaper (26) is
), in which the sandpaper (26) is stretched in a direction in which the sandpaper (26) is stretched in two directions with respect to the feeding direction of the workpiece (8); supply mechanism. 2) Table U on which the workpiece (8) is placed and sent in a certain direction
and a belt-shaped sandpaper (26) stretched so as to be close to the processed surface (8a,) of the processed material (8), and the polished surface of the sandpaper (26) is placed close to the processed surface (8a,).
In the mechanism for polishing the processed surface (8a) by pressing against the workpiece (8a), the sandpaper (26) is stretched in a direction intersecting the feeding direction of the workpiece (8), and the sandpaper (26) ) A sandpaper supply mechanism in a polishing device, which is provided with a feeding mechanism that feeds sandpaper intermittently and quantitatively according to the amount of the surface to be used. (The following is a margin) 2. In the 7th line of page 5, in the 5th line, 16th line, in the 6th line of page 6, and the 9th to 10th lines of page 12, "Table 4" has been replaced with "Table 6". ” and corrected each other. 3. In the 8th line of ttS on page 10, replace the phrase "Tip wa" with one character as "Tip wa". 4. On page 14, line 15, replace "4: Table" with "
6: “Table”. (Left below) ■. In the drawings attached to this application, Figure 6 has been corrected as per the attached sheet (above) Figure 6

Claims (1)

[Claims] 1) A table on which the workpiece (8) is placed and sent in a certain direction (
4) and a belt-shaped sandpaper (26) stretched so as to be close to the processed surface (8a) of the processed material (8), and the polished surface of the sandpaper (26) is placed close to the processed surface (8a) of the processed material (8).
Sandpaper in a polishing device in which the sandpaper (26) is stretched in a direction intersecting the feed direction of the workpiece (8), in the mechanism for polishing the processed surface (8a) by pressing against the workpiece (8a). supply mechanism. 2) A table on which the processed material (8) is placed and sent in a certain direction (
4) and a belt-shaped sandpaper (26) stretched so as to be close to the processed surface (8a) of the processed material (8), and the polished surface of the sandpaper (26) is placed close to the processed surface (8a) of the processed material (8).
In the mechanism for polishing the processed surface (8a) by pressing against the workpiece (8a), the sandpaper (26) is stretched in a direction intersecting the feeding direction of the workpiece (8), and the sandpaper (26) ) in an abrasive device, which is provided with a feeding mechanism that feeds sandpaper intermittently and quantitatively according to the amount of the surface to be used.