JPS5930660A - Both side grinding belt type sanding machine - Google Patents

Abstract

PURPOSE:To grind lumber effectively, by mounting rough grinding belts running in a direction meeting either at right angles or slantwise with a feeding direction of a work and finish grinding belts running in an identical direction with the rough grinding belts in succession to them are mounted symmetrically respectively, in simultaneous grinding for both symmetrical side faces of the lumber. CONSTITUTION:A board material (a) to be ground is loaded on caterpillars 16a and 16b by positioning it with a guide component 70, which is made to advance by a clasp 17 and is transfered to a place between rough grinding heads 50a and 50b while pressing it by holding belts 36a and 36b. Rough grinding belts 55a and 55b are made to run and rotate in a vertical direction to a feeding direction of a work, and both side faces of the board material (a) is ground heavily and transfered to the next finish grinding heads 60a and 60b by the heads 50a and 50b. Finish of te surface ground roughly is done here by finish grinding belts 68a and 68b running and rotating in an identical direction with a feeding direction of the work. Thus, as a whole area of the rough grinding belts are used, their life can be lengthened and grinding operation can be made effective as the rough grinding and finish grinding can be done simultaneously.

Description

[Detailed Description of the Invention] The invention relates to a belt sander machine that simultaneously grinds and polishes both sides of workpieces such as plywood and resin. This invention relates to a belt sander machine that efficiently and automatically performs grinding and polishing.

Normally, in order to finish a processed material smoothly to the specified dimensions, it is necessary to perform a rough cutting process using a cutter, plane body, etc. to roughly cut the temporary surface and make a medium cut, and a finishing process to make the cut surface smooth. There is.

By the way, in the past, such processing was performed separately,
If the device is bulky and uses cutters such as cutters, it takes a long time to set the cutler and the work is troublesome.

Therefore, as disclosed in Fig. 6 of Utility Model Application Publication No. 51-3992, a grinding belt for rough grinding is passed over a contact roll in front of the constant material passage, and a treading pad is used behind it. A grinding belt was devised in which rough grinding and finish grinding were performed without using a cutter by arranging grinding belts to run along the material feeding direction.

However, according to this configuration, the abrasive belt wrapped around the contact roll has f rows that follow the fiber direction of the wood, so the contact roll Jl[! Even if the pressure is increased, sufficient grinding cannot be performed, resulting in insufficient grinding and re-grinding, or there are cases where it is necessary to grind the blade as a pre-processing before applying it to the device. In this case, it would be wasteful to provide both a rough grinding belt and a finish grinding belt. In addition, if the grinding rlJt (see Fig. 5) in the direction perpendicular to the feeding direction of the workpiece is narrow, for example when correcting the misalignment of a box by grinding, a part of the abrasive belt surface This is uneconomical because only the surface of the abrasive belt is rubbed, and since the pressure receiving surface is small, the pressure on the contact surface becomes large, which tends to cause grinding marks along the running direction on the surface of the abrasive belt, making it difficult to remove the abrasive belt. frequency of replacement increases.

The purpose of the invention is to eliminate the above-mentioned drawbacks by providing a transport device that transfers the workpiece while holding it vertically or horizontally, the corresponding interval of which can be adjusted freely, and moves relative to both sides of the material transport path in the direction away from the workpiece. A mounting frame is provided, and rough grinding belts that run perpendicularly or diagonally to the material feeding direction are mounted on both frames in a corresponding manner so that the inner surface of the rough grinding belt faces the material feeding path, and a Finish-grinding and abrasive belts running in the same direction as the material feeding direction are attached to the frames in a corresponding manner, with their inner surfaces facing the material feeding path, and the rough-grinding belts are arranged perpendicular to the fiber direction of the processed material. Alternatively, the grinding amount is increased by running diagonally, and the grinding process is completed in - times, and the G is applied so that it is optimal for workpieces with a narrow grinding amount.

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

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

The insertion groove 3 formed on the upper surface of the dovetail guide 2 has a first
As shown in the figure, the moving screw 7, which rotates from the deceleration motor and screw mounted on the right side of the frame 1, is inserted through it, and its right and left ends are supported by metal plates 8, 8, and the insertion groove is inserted into the mounting frame 5. By screwing the threaded ply plate 9 protruding into the moving screw 7 into the moving screw 7, the mounting frame 5 is moved in the width direction by the rotation of the deceleration motor 6, and the mounting frame 4.5 is moved in the away direction. The frames are moved relative to each other, and the space between the frames is used as a material feeding path.

The mounting frame 4. (5) is a caterpillar fly Al0a (fo
b), and a column-shaped vertical frame 1la (llb) is provided on the outside.

The left and right caterpillar frames loa and IOb have driven wheels 12a and 12b rotatably supported at the front, respectively, and a drive wheel 13a at the rear.

+3b is pivotally supported, and the wheels 12a, 12b, 13a,
Material feeding caterpillars 16a, 1 are provided with several auxiliary wheels 14 inscribed in the material feeding caterpillar 13b and provided with a large number of locking tools 17 at regular intervals.
6b, and connect the two straight running parts to the caterpillar frame IOa, t.

Place it slightly above b.

The drive wheels 13a and 13b are connected by a spline shaft +F3 passing through the left and right sides, and as the drive wheel (=J frame 5) moves in the width direction, the right drive wheel +3be
moving along axis 18;

The spline shaft 1g is driven by a support frame 20 erected at the rear of the lower frame 1 and a first drive motor 21 attached thereto via a chain 22 and a sprocket 23. ,
16b will circulate around the roll group.

Furthermore, behind the caterpillars 16a and 16b,
Caterpillar frame loa, rear end GO of fob (=J
The feed-out bells 25a and 25b are respectively arranged by passing over a plurality of mounting rolls 24 supported on the girder mounting plate 15, and the sprocket 26 attached to the spline shaft 18 and the shaft of the mounting roll 24' at the rear end (this The attachment is carried out by hooking and passing the chain to the sprocket 26' (thus, the healds 25a and 25b are moved by the rotation of the spline shaft Ig).

27a, 27b are the caterpillar frames 10a, l.
The presser belt frames are respectively placed on the ob, and the frames are fitted into dovetail guides 28a and 28b formed on the inner surfaces of the vertical L/- mulla and 11b, respectively, so as to be able to rise and fall. (See FIG. 6) Insert the lifting screws 29a and 29b into the vertical frames lla and Ilb, and insert the lifting screws 29a and 29b.
, 29b, the belt frames 27a, 27b, which are threaded onto the screws, are moved up and down along the guides 28a, 28b. Sprockets 30a and 30b are coaxially fixed to the lifting screws 29a and 29b, respectively, and a pair of rod-shaped link covers 31a cover the sprockets and swing around the shafts.

An intermediate sprocket 32 is pivotally mounted to the central connection part of the sprocket 31b, and the sprockets 30a, 32.30b are connected by a chain, and the drive shaft of a reversible motor 33 attached to the vertical frame lla and the lifting screw 29a are connected by a chain. From this, by driving the reversible motor 33,
The lifting screws 29a and 29b are interlocked so that the presser belt frames 27a and 27b are raised and lowered simultaneously.

Driven rollers 34a and 34b are pivotally attached to the front portions of the presser belt frames 27a and 27b (7), respectively, and driving rollers 35a and 3.5b are pivotally attached to the rear portions thereof.

A spline shaft 37 is passed through the drive rollers 35a and 35b, and the drive roller 35b is connected to the drive roller 35b so that it can slide on the shaft 37.

The left end of the shaft 37 protrudes from the frame 27a and is attached to the gear 3.
8 is fixed to the gear 3, and a gear 41 is pivotally supported at a connecting portion between a link cover 39 that swings about the shaft 37 and a link cover 40 that swings about the shaft 18.
A sprocket coaxial with the gear 41 is connected by a chain to a sprocket attached to the left end of the shaft 18, and the drive motor 21 rotates the drive rollers 35a and 35b. The drive roller 35a and the driven roller 34a and the drive roller 35b and the driven roller 3
4b, the material feeding presser belts 36a, 36b run by the drive rollers are hung and passed around, respectively, and the belts 36a, 36
A large number of pressure rolls 43 which are urged downward by springs 42 or the like are disposed on the inner surface of the lower straight running portion of b.

The presser belt 36a, the material feed caterpillar 6a, the presser bell 36b, and the material feed caterpillar +6b constitute a material feeding device on both the left and right sides of the material feeding path.

50a and 50b are the material feeding caterpillars 16a.

+6b is a rough grinding head according to the invention provided on the side part, and rough grinding frames 51a and 51b are respectively attached to the front sides of the left and right vertical frames l\Ila and Ilb, and tension driven rollers 52 are attached to the frames. A grinding motor 53 is attached to the lower part of the rough grinding frames 51a and 51b, and the driven roller 5 is attached to the output shaft of the grinding motor 53.
A corresponding drive roller 54 is attached directly below the driven roller 52 and the drive roller 54, respectively.
5a and 55b, and the belt is connected to the grinding motor 53G.
Therefore, it travels in a direction perpendicular to the direction in which the workpiece is fed.

Furthermore, the rough grinding frame 51a.

A traveling guide plate 56 is supported on the inner surface of the rough grinding belt 51b, and comes into contact with the inner surfaces of the rough grinding belts 55a and 55b, so that the inner running portion of the belt faces the material feeding path 11111.

The bells l-55a and 55b are covered with a cover 56.5 from the outside.
6, and the cover 56 is provided with a discharge port 57 for discharging the grinding debris generated by the grinding process.

60a and 60b are the rough grinding heads 50a.

The finishing grinding head is installed on both sides of the material feeding path behind the 50b, and is fitted into the lifting guides 61a and 61b provided on the rear side of the vertical frames Ila and Ilb (see Fig. 6). A drive/tension roller 65 rotated by a grinding motor 64 is pivoted outward and up and down on finish grinding and polishing frames 63a and 63b, which are raised and lowered by the rotation of an elevating screw 62 inserted up and down. By arranging and supporting the driven rollers 66, 67 in the front and rear, the rollers 65, 66, 67 are arranged in a triangular manner, and the finishing grinding and abrasive belts 6ga, 6&
The belts 68a and 68b are run along the material feeding direction by the grinding machine 4.

The driven rollers 66 and 67 are disposed between G and the tread cushion pads 69 are supported on the frame rollers 3a and 63b, respectively.1. The inner running portions of the belts 6&a, 613b are pressed toward the material feeding path.

Others 70 are material feeding guides provided on the left caterpillar frame IOa in the front-rear direction, and the moving handle 7
1 rotation, the guide 70 is moved in the width direction.

Further, 73 is a scale plate that indicates the width interval of the mounting frames 4 and 5 that are moved apart by the moving screw 7.

The operation of the above embodiment will be explained.

When cutting the temporary phase a shown in FIG. 4, rotate the moving handle 71 to move the material feeding guide surface of the guide guide 70 by the amount of grinding than the grinding surface of the left rough grinding bell) 55a. Move it outward and fix it.

When cutting the protrusion C due to misalignment of the box rack shown in FIG. Avoid contact with the periphery of the box.

Next, the deceleration motor 6 is driven while visually observing the scale plate 73, and the rough grinding head 50b and the finish grinding head 60b on the right side are moved to move the rough grinding head 50b and the finish grinding head 60b, and between the rough grinding bells 55a and 55b and between the bottom and L grinding abrasive belts 68a and 68b. Match the distance to the finishing inset of the workpiece. The base 6b and the caterpillar are driven by the deceleration motor 6.

In addition to the rough frame lOb and the vertical frame llb, the delivery bell) 25b and presser belt frame 27be move integrally.

Further, after screwing the finish grinding heads 60a, 60b, the left and right grinding motors 53, 53 are driven to cause the left and right rough grinding bells 55a, 55b to travel in a direction perpendicular to the material feeding direction, The grinding motors 64 and 64 are driven to carry out the final grinding and polishing bells 68a and 68b along the material feeding direction, and the drive motor 2I is driven to grind the left and right caterpillars 16a and 16b, and directly above the caterpillars. The caterpillar 1
The workpieces a and b are placed on the workpieces 6a and 16b, and are stopped at the rear by the stopper 17 and transported forward.

The processing N'a+b is performed using the presser belt frames 27a and 2.
When reaching the bottom of 7b, press the left end of the belt 3
6a and the caterpillar 16a, and its right end is held down by the bell) 36b and the caterpillar +6b, and is automatically fed.

The processing U'a+b is the left and right rough grinding bells) 55a, 55
b is subjected to polishing in a direction perpendicular to the fiber direction. Therefore, the surface to be ground is sufficiently ground.

Furthermore, the workpieces a and b are (1 knee h grinding abrasive bell) 68a + 68b between tread pressure cushion pad 69G
As a result, finish grinding and polishing is performed along the fiber direction of the workpiece while applying a suitable tread pressure, and a smooth polishing plate is created on the ground surface.

The traveling direction of the rough grinding bells 55a and 55b may be inclined with respect to the feeding direction of the workpiece, and the angle of inclination is appropriately selected depending on the workpiece (the amount of grinding and the grinding part). Furthermore, the material feeding device consisting of the presser bells 36a, 36b and the caterpillars 16a, 16b is arranged in the left and right direction, and the rough grinding heads 50a, 50b and the grinding -・Rad 60a, 60b
may be arranged one above the other.

In the embodiment described above, the material to be processed is fed by the left handle (=the upper presser bell provided on the J frame 4) 36a and the caterpillar 16.
aG The left end of the workpiece is clamped between two parts, the upper presser heald 36b provided on the mounting frame 5, and the caterpillar +6.
b), the right end of the workpiece was applied while being clamped vertically, and the distance between the material feeding devices at both ends could be changed as appropriate.

Therefore, when grinding a box material having an opening at the top as shown in Fig. 5, it is possible to feed the material while supporting its periphery, and the grinding part G where the grinding pressure of the belt is applied is
Since the material is supported closely, the material can be transported safely without being tilted to the left or right by the grinding pressure, and the material can be transported by a wide material delivery belt above and below the center of the material delivery path. In some cases, it is not possible to cut both sides of the workpiece unless the ri of the workpiece is higher than the material conveying belt, but in the non-example, there is no such restriction and there are advantages such as a mouth that can be applied to narrow workpieces. be.

As clarified in the above explanation, the invention is to install a pair of left and right rough grinding bells 55a and 55b that run perpendicularly or diagonally in the opposite phase direction to both sides of the shipping passage, and furthermore, A pair of finishing grinding abrasive belts 6εa, 68
b are given as several examples, and the rough grinding belts 55a, 5
5bG Therefore, by grinding both sides of the workpiece from a direction perpendicular or oblique to the fiber direction, the amount of grinding can be increased, making heavy grinding possible to nJ, and even when the rlJt of the surface to be ground of the workpiece is narrow, the grinding amount can be increased. Grinding surface [rough grinding bell] 55a,
Since the belt 55b rubs from the perpendicular or diagonal direction, the entire surface of the rough grinding bells 55a and 55b is always used, and the service life can be dramatically extended without creating grinding marks on the belt. Since rough grinding and finish grinding are performed using a stand-based device, there are excellent effects such as extremely efficient machining operations.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the invention, and FIG. 1 is a partially cutaway front view, FIG. 2 is a partially cutaway side view, FIG. 6 is a plan view, and FIGS. 4 and 5 are examples of processed materials. FIG. I; Lower frame 4, 5; Mounting frame 6; Deceleration motor 7; Moving screw 16a, 16bi caterpillar 21; Drive motor 33; Reversible motor 55a, 55bi rough grinding belt 68a, 68b; Finish grinding abrasive belt

Claims (1)

[Claims] A shipping device that transfers the processed material while holding it vertically or horizontally is punched so that the corresponding interval can be adjusted freely, and mounting frames that move relatively toward and away from each other are provided on both sides of the shipping path, and both frames are attached to the frame orthogonally to the material feeding direction. Rough grinding belts that run diagonally are installed in a corresponding manner so that the inner surface of the rough grinding belt faces the shipping path G, and one finish grinding is performed that runs behind the rough grinding belt in the same direction as the material feeding direction G. A double-sided grinding and abrasive belt sander machine characterized in that the belts are attached to the frame in a corresponding manner, and the inner surfaces thereof face the shipping passage.