JPH035412Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is based on a pad support frame that corresponds to the back side of a running sanding belt, and a tread pressure pad in contact with the back side of the belt, and a tread pressure pad formed on the pad. In a woodworking curved surface sander that presses the curved surface against the grinding curved surface of the workpiece through the belt, it is possible to easily and accurately perform fine adjustment in the vertical direction to match the treading curved surface of the tread pad with the grinding curved surface of the workpiece. This is how it was done.

(Prior Art) A curved surface molding pad fine adjustment device that has been used for a long time has a slider whose vertical movement is controlled along a vertical guide b on the back surface of a main body frame a, as illustrated in FIG. c, and a movable piece f that is moved by a handle e using a front-rear guide d on its upper surface as a guide, and an axis g of the piece f supports a belt frame h so as to be swingable in the direction of the arrow. A pair of front left and right guide rolls i provided on the frame h
and a driving roll j driven by a motor M, and a sanding belt k is passed around the guide roll i.
A pad support frame supported by a belt frame h between the guide rollers 12 and 12 in FIG. 2 supports a tread pad Pt that presses against the grinding curved surface y on the side surface of the workpiece x via the belt k. If the machining curved surface y of the workpiece and the treading curved surface Pt' of the treading curved surface forming pad Pt do not match in terms of gender, move the slider c up and down, or move the moving piece f back and forth. Adjustments are made using a three-way adjustment device, such as by moving or swinging the belt frame h around the axis g, which not only increases the size of the device, but also requires time and skill to adjust. There were drawbacks, such as the fact that it was necessary.

(Purpose and Structure of the Present Invention) The present invention aims to eliminate such drawbacks and provide a structure that can be easily and accurately adjusted on the belt frame. A support curved surface 20 in the height direction, which is substantially perpendicular to the running direction of the sanding belt 14 and centered on a virtual center O near the center in the height direction of the treading pad, is formed on the corresponding front surface, and A sliding curved surface 21 in the height direction centered on the virtual center O is provided, a transparent hole 22 is provided in the frame 19 from the support curved surface 20 to the sliding curved surface 21, and a tread pressure pad 35 is attached or integrally formed. On the back side of the mold holder 26,
A protruding curved surface 27 that closely contacts the support curved surface 20 is provided, and a screw rod 31 protruding from the back surface of the mold holder 26 is passed through the through hole 22 to freely swing up and down. 31 is characterized in that a tightening nut 37 is screwed onto the sliding curved surface 21.

(Example) Figures 2 to 6 show an example of the present invention, in which a transport caterpillar belt 4 is stretched around guide rollers 2 and drive rollers 3 installed on the right and left sides of the main body frame 1. A grinding curved surface y is provided on the side surface of the workpiece x being transferred along the grinding surface.

The main body frame 1 has a pair of posts 5, 5 erected on the left and right sides of the rear side in FIG. A presser belt frame 8 that is moved up and down by a handle 9 is provided, and the frame 8
A presser belt 10, which is stretched between the front and rear rolls, is brought into contact with the workpiece x.

A belt frame 11 is provided on the rear side of the main body frame 1 between the supports 5, 5, and front and rear guide rollers 12, 12 brought close to the rear side of the transfer caterpillar belt 4, and a drive roller 13 driven by a motor M are provided. Pass the sanding belt 14 over it.

Guide rollers 12,1 are placed on the belt frame 11.
A pad support plate 15 shown in Figs. 2 and 5 is attached between the left and right guide pipes 1 fixed to the support plate.
A pad support frame 19 fixed by nuts 18, 18 is provided between the tips of the sliding rods 17, 17 passed through 6, 16, and the support frame 19 has a pad support frame 19 as shown in the enlarged cross-sectional view of FIG. , a support curved surface 20 is formed in the height direction around a virtual center O near the center in the height direction of the front surface corresponding to the tread pressure pad 35, and a sliding curved surface 21 concentric with the support curved surface 20 is provided on the rear surface; A vertically elongated through hole 22 is bored between both curved surfaces 20 and 21. Further, an arm 19a protruding from the pad support frame 19 to the side is attached to the pad support plate 1.
It is connected to a rod 25 of a cylinder 24 for advancing and retracting in the longitudinal direction attached to the cylinder 5.

A mold holder 26 having a protruding curved surface 27 formed on the rear surface that closely fits the curved surface 20 of the pad support frame 19 is joined to the support curved surface 20 of the pad support frame 19 so as to be rotatable in the vertical direction about the virtual center O. The holder 26 has a through hole 28 with a large diameter hole 29 on the front side.
and a screw hole 30 passing from the top surface to the large diameter hole 29, and a head 32 of a screw rod 31 passed through the through holes 28, 22.
is fitted into the large diameter hole 229, and an annular groove 33 formed therein is inserted into the large diameter hole 229.
Then, the inner end of the tightening screw 34 screwed into the screw hole 30 is brought into contact. In addition, on the front side of the padded support frame 19,
A treading pad 35 having a treading curved surface 36 having a male and female relationship with the cutting curved surface y of the workpiece x is attached to the mold holder 2.
6 or formed integrally with the holder 26. A tightening nut 37 that presses against the sliding curved surface 21 is screwed onto the threaded rod 31, and a removable lever handle 38 is fitted into the nut 37.

The pressing pad 35 brings the pressing curved surface 36 into contact with the grinding curved surface y of the workpiece x via the sanding belt 14.

In this embodiment, the tightening nut 37 is slightly loosened using the lever handle 38, the threaded rod 31 is moved up and down within the through hole 22 using the lever handle 38, and the mold holder 26 and the treading pad 35 are slightly moved. , align the treading curved surface 36 with the grinding curved surface y of the workpiece x. At this time, it is convenient to remove the sanding belt 14, but it is also possible to leave the sanding belt 14 interposed as shown in the figure. In addition, if there is too much space between the grinding curved surface y and the treading surface 36, or if there is no space, adjust the pad support frame 19, mold holder 26, and treading pad 35 by moving them back and forth using the advance/retreat cylinder 24. .

(Operations and Effects) The operation of the present invention is as described in the above embodiment, and the mold holder 26 and the treading pad 35 are screwed together with the screw rod 31 and tightened on the sliding curved surface 21 on the back surface of the pad support frame 19. Slightly loosen the tightening nut 37 that fixes the threaded rod 31 into the through hole 2.
2, the mold holder 26 and the tread pad 35 are slightly moved up and down to make fine adjustments to match the tread surface 36 to the cutting surface of the workpiece, and then the tightening nut 37 is tightened again. A mold holder 26, to which the tread pad 35 is attached or integrally molded, is attached to the front surface of the pad support frame 19 at the center of the tread pad in the height direction. A protruding curved surface 27 is provided in close contact with a support curved surface 20 in the height direction centered on a nearby virtual center O, and a screw rod 31 protruding from the protruding curved surface 27 is protruded from a through hole 22 formed in the pad support frame 19 to the back surface. The tightening screw 37 screwed into the threaded rod 31 is connected to the frame 1 which is formed concentrically with the support curved surface 20.
Since it is tightened to the sliding curved surface 21 of No. 9, the tread pressure pad, once finely adjusted, will not move freely during the grinding operation, and when the tightening screw 37 is loosened, the aforementioned protrusion can be achieved by simply operating the threaded rod 31. Since the curved surface 27 can be accurately moved to follow the curved surface of the support curved surface 20 on the front surface of the pad support frame 19 and the above-mentioned fine adjustment can be made, the forced cutting of the curved surface of the workpiece by the sanding belt 14 can be stabilized, and This has the effect of making it easy to make the desired fine adjustments.

[Brief explanation of the drawing]

Fig. 1 is a side view illustrating a conventional adjustment device, Figs. 2 to 6 show an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is a front view, Fig. 4 is a side view, and Fig. 4 is a side view. Figure 5 is an enlarged plan view showing the main parts, Figure 6 is Figure 5 A-A
It is a line cut side view. 1... Body frame, 11... Belt frame, 12... Guide roller, 13... Drive roller,
14... Sanding belt, 19... Padded support frame, 20... Support curved surface, 21... Sliding curved surface, 22... Through hole, 26... Mold holder, 27...
...Protruding curved surface, 31...screw rod, 35...tread pressure pad,
36...Tread pressure curved surface, 37...Tightening nut.

Claims (1)

[Claims for Utility Model Registration] A treading pad in contact with the back side of the sanding belt is attached to a pad support frame corresponding to the back side of the running sanding belt, and the treading curved surface formed on the pad is applied to the processed material through the belt. In a curved surface sander for woodworking that is brought into pressure contact with the grinding curved surface of the pad 35 of the pad support frame 19,
A support curved surface 20 in the height direction, which is approximately perpendicular to the running direction of the sanding belt 14, is formed on the front surface corresponding to the back surface of the tread pad, and is centered on a virtual center O near the center in the height direction of the tread pad. A sliding curved surface 21 in the height direction centered on the virtual center O is provided on the back surface of the frame 19, and a transparent hole 22 is provided in the frame 19 from the supporting curved surface 20 to the sliding curved surface 21.
A protruding curved surface 27 that closely contacts the support curved surface 20 is provided on the back surface of the mold holder 26 to which the treading pad 35 is attached or integrally formed, and the screw rod 31 protruding from the back surface of the mold holder 26 is attached to the aforementioned mold holder 26. A curved surface pad fine adjustment device for a curved surface sander machine, characterized in that the pad is passed through a through hole 22 so as to freely swing up and down, and a tightening nut 37 for tightening the sliding curved surface 21 is screwed onto a threaded rod 31 protruding from the back surface of the sliding curved surface 21. .