JPS60167756A - Sander for woodworking - Google Patents

Abstract

PURPOSE:To polish a corner angular surface for finishing so efficiently, by making a corner angular part of the wood work mounted on a table contact toward an angular surface made up of the front of a surface plate and a sliding plate, while making a polishing belt come into a state of being projected somewhat more nearer to the table side than a vertical line. CONSTITUTION:An L-shaped base plate 4 is erected on a box body 2 making up a device body, and a traveling roller 6 is pivotally supported on an upper surface part of a vertical base plate 4a free of turning motion, while a vertical surface plate 7 is erected on the sidepiece corresponding to the roller 6, and a sliding plate 8 is installed in the bottom surface part of a horizontal direction, thus a corner angular part of a wood work 1 is efficiently polished for finishing. A polishing belt 20 is stretched over so as to pass through rollers 6 and 13, the surface plate 7 and the sliding plate 8, and on the roller 13, pressing force acts with a hydraulic cylinder 21 in an arrow (b) direction. A vertical surface (g) of the surface plate 7 is made to be somewhat projected to the side of a table 28 whereby a slide of the polishing belt 20 is smoothed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to furniture having a corner portion, for example, a drawer with sleeves 1 as shown in FIG. This relates to a woodworking sander that can efficiently perform polishing finishes such as e and f.

Until now, there has been no woodworking sander on the market that can efficiently polish and finish the corner surfaces as described above, and the process has been carried out exclusively by hand, which is labor-intensive and time-consuming. It becomes.

The present invention aims to solve the above problems,
The feature is that a sliding plate is installed in the horizontal direction at right angles to the bottom of an upright surface plate, and a polishing belt runs while bending at right angles on the front surface of the surface plate and the bottom surface of the sliding plate. , polish the upper and lower horizontal positions of the surface plate.
L/ ) running rollers are provided, and each running roller is made to rotate in synchrony, and the workpiece is placed at the front position where the abrasive belt is bent at right angles. The reason is that a table has been set up.

Hereinafter, an example of implementing the present invention will be described based on the accompanying drawings.

Reference numeral 2 denotes a box forming the main body of the apparatus, in which a driving electric motor 8 is housed. Reference numeral 4 denotes an L-shaped base set upright on the box body, and a bearing 5 is provided on the upper surface of the vertical base 4a for use in running. - In addition to being supported by the shaft in the 8□ movable part, a surface plate 7 is vertically set up in a certain height range on the side surface corresponding to the traveling roller 6. A sliding plate 8 is provided on the bottom surface in a horizontal direction perpendicular to the mounting plate. child! The sliding plate 8 is used to efficiently polish and finish the corners of the workpiece during the sliding movement of the polishing belt, which will be described later, and is usually made of hardened steel, but other materials may also be used. It can be made from ceramic materials, etc. In addition, in order to prevent the polishing bell l- from swelling due to the air brought in by the polishing belt running in the area, or from becoming hot due to the frictional heat caused by sliding, the bottom surface of the surface plate and/or the sliding surface should be A plurality of air grooves are formed at the mating points of the moving plates in the same direction as the running direction of the abrasive belt, which will be described later, as specifically shown in FIG. 4.

4A and 4B are a front view and a side view of the surface plate 7, and in the illustrated example, one air groove 9 is bored in the bottom of the platform.

10 is a rail laid on the horizontal base 4b; 11 is a bed that slides on the rail/L'IO; a bearing 12 is provided on the upper surface;
Similar running rollers 13 are provided on the corresponding side. 14 is a pulley on the opposite side, which is connected to the electric motor 3;
The driving force is transmitted through the be/l/l-15, and the traveling roller 13 is rotated.

Therefore, the traveling roller 6 is also rotated in synchronization with the rotation of the traveling roller 13, and there is a pulley on the same side where the pulley 14 is located, that is, on the opposite side of the traveling roller 6. 16 is attached, and a belt 17 is hung between the other grooves in the pulley 14 and rotated. In addition, 18 and 19 are the belt 15
．． This is a belt tensioning means for applying a constant tension to the belt 17 to prevent it from coming off.

Reference numeral 20 denotes an abrasive belt that is stretched so as to pass through the running roller 6.13, the surface plate 7, and the sliding plate 8 on the lower surface thereof, and is driven by the electric motor 3 to run in the direction of arrow (A). It is now possible to do so. Normal running rollers 6 and 13
The circumferential speeds of the running rollers 6 are made to be synchronous and the same, but in order to reduce the sliding resistance of the polishing bell l-200 near the sliding plate 8, the circumferential speed of the running roller 6 is made slightly larger. It is convenient to use a pulley 16 on the traveling roller 6 as a pulley whose speed can be adjusted in order to make the adjustment easier. However, in the illustrated example, the pulley 1
Although the explanation has been given on the case where the rotation 6'fij1 is transmitted via the pulley 14 and the belt 17, a system in which it is directly driven by a separate motor synchronized with the electric motor 3 can be adopted.

Reference numeral 21 denotes a fluid cylinder for constantly applying a constant pressing force to the traveling roller 13 in the direction of the arrow (b) during polishing and finishing work. Specifically, the cylinder body is a box-shaped body. 2. The support plate 22 fixedly installed in the horizontal base 4b on the upper surface of the bed is fixed to the support plate 22 using a pin 23 so as to be able to swing freely, whereas the piston rod is connected to a bracket 24 vertically installed on the bottom surface of the bed base 11 and a pin. It is connected through 25.

The above configuration uses a fluid cylinder,
A similar effect can be obtained by using other mechanical means such as a screw ring or other threaded rod. Incidentally, when replacing the polishing belt 20 or when the work is closed, the bed stand 11 is moved in the direction of arrow e4 so that no tension is applied to the polishing belt 2o.

Reference numeral 26 denotes a sliding angle adjustment plate installed upright on the upper surface of the surface plate, which is used to adjust the vertical angle f of the surface plate 7 during actual polishing work.
This is to allow the polishing belt 20 to slide smoothly onto the trace surface g when the polishing belt 20 is slightly protruded toward the table for placing the workpiece. The top surface of the vertical plate 26a is formed into a slightly receding inclined surface, and a graphite band 27 is provided in a covered state on the front side including this surface so as to reduce the sliding resistance. Reference numeral 28 denotes a table for placing a workpiece on the front surface of the box body 1 to facilitate polishing and finishing work, and the table 28 is constructed as follows.

That is, 29 is a guide plate fixed to the front wall of the box 1;
is an elevating plate that moves up and down guided by the guide plate, and has U-shaped guide grooves 30a, 30 at both ends.
b is provided, and a bearing flange 31 for supporting a threaded rod (described later) is provided at the lower center, and a fluid cylinder supported by a mold bearing flange 33 fixed to the box side is provided at the lower side of the chain plate 30. It is fixed to the piston rod of 34,
The cylinder 34 is actuated to perform a vertical lifting action.

Reference numeral 35 denotes another elevating plate that can be moved up and down using the U-shaped grooves aOa and ao'b of the elevating plate 30 as guides, and the upper side is connected to the back side of the tape/I/28 via a pin 36. A bearing flange 37 is provided at the upper center of the chain plate so as to be freely fixed and supported, and a bearing flange 37 is provided that protrudes forward for a long time, and the tip boss portion S is provided with a female thread. The screw rod 3d is screwed into an upright state, and the tip of the rod is freely fixed to the back surface of the tape/v28 via a pin 39. Then, by appropriately operating the hands/Lz 40a and 40b screwed into the upper and lower parts of the threaded rod 38 with the boss S in between,
That is, when either one of the handles 40a, 40b is loosened, the other is rotated to tighten it, so that the threaded rod 38 is moved slightly up and down. The angle of inclination θ relative to the angle θ can be slightly changed.

In the above explanation, changing the inclination angle θ means that during the polishing work of drawer 1, the depth part of the side wall surface is slightly tapered toward the back side (point 1 in Fig. It would be good to be able to add (see chain line) υ
, therefore, it is meant to help you perform your work efficiently.

Reference numeral 41 denotes a bearing fixed on the elevating plate 35, on which a handle shaft 42 is rotatably supported, and a hand (v43) is mounted on the outer end of the shaft, while a bevel gear 44 is mounted on the inner end. It gets stuck. Reference numeral 45 denotes a threaded rod whose lower end is screwed into a female thread formed in the boss portion S4 of the bearing flange 31 and is installed upright, and whose upper end is connected to the bearing 46 provided on the back surface of the bearing flange 31. The rod is rotatably supported, and a bevel gear 47 that meshes with the bevel gear 44 is attached to the middle of the rod.
By appropriately rotating the hand (v43), the screw rod 45 is rotated clockwise or counterclockwise, and this rotation causes the vertical movement of the elevating plate 35.

Note that 48 is a stopper provided on the upper surface of the guide plate 29, and is configured to restrict the upper limit of the elevating plate 30 that is raised by the operation of the fluid cylinder 34. This is because, in this device, the table 28 is raised and lowered over a large distance by the operation of the fluid cylinder 34, and after this.

The present invention is constructed as described above, and in operation, first, the workpiece 1 having the corner surface to be polished is placed on the tape/I/28''2, and the corner surface is The table 28 is brought into contact with the corner surface formed by the front surface of the surface plate 7 and the sliding plate 8. At this time, the height adjustment of the table 28 and other adjustments are made using the fluid cylinder 34 and the like as described above. Hand #48. Perform by operating 40a, 40b, etc.

Also, adjust the polishing plate 7 by loosening the bolt 49 in advance so that it can protrude a little from the vertical base 4a to the side of the surface plate 7. The vertical line is also placed in a state where it slightly protrudes toward the tape/L'28 side. This is Polished Versito 20
This is extremely effective in preventing curling during zero travel and in performing effective polishing work along the surface of the surface plate.

Next, the fluid cylinder 21 is operated to remove the polishing belt 20.
is tensioned under a constant tension, and then the start button of the electric motor 3 is pressed. As a result, the polishing belt 20 runs in the direction of arrow (A), and the workpiece 1
This makes it possible to efficiently polish and finish the corner surfaces e and f in an extremely short time. Furthermore, the device of the present invention greatly contributes to the reduction of conuts.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a sleeve drawer, Fig. 2 is a front view of the device of the present invention, Fig. 3 is a side view thereof, and Fig. 4 A and B are a front view and side view of the surface plate used in the present invention. It is a diagram. ■...Drawer with sleeves 2...Box body - 3...Electric motor Sen...Vertical base 4b...Horizontal base 6...Roller 7...Surface plate
8... Sliding plate 9... Air groove 11... Bed stand 13... Mouth ~ Ra 14. 16... Pulley 15.
17... Belt 20... Use [polished belt 21]
...Fluid cylinder 26...Sliding angle regulating plate 28...Table 29...Guide plate 30...Elevating plate 34...Fluid cylinder 35...Elevating plate 3
8... Screw rods 40a, 40b... Hand I'/l/ 43...
Handle 45... Screw rod 48... Stopper Patent applicant Shigeru 1, (,n Figure 1b)

Claims (3)

[Claims] (1) A sliding plate is installed in the horizontal direction perpendicular to the bottom of a surface plate set upright, and the polishing belt runs while bending at right angles on the front surface of the surface plate and the bottom surface of the sliding plate. and rollers for running the abrasive belt are provided at the upper and lower horizontal positions of the surface plate, and the rollers for each run are made to rotate in synchrony, and the abrasive belt is A woodworking sander characterized in that a table for placing a workpiece is provided at a front position where the workpiece is bent at a right angle. (2) The woodworking sander as set forth in claim 1, characterized in that a sliding nine-angle adjusting plate for the abrasive belt is provided on the upper surface of the guide plate. (3) A plurality of air grooves are formed in the bottom surface of the surface plate and/or at the mating location of the sliding plate in the same direction as the running direction of the abrasive belt, as described in claim 1. Sander for woodworking.