JPS634598Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a dial for adjusting the gap between the passages of ground workpieces in a belt sander machine, and is designed to adjust the roughness of abrasive grains for rough grinding, finish grinding, etc. This allows the passage gap adjustment to be easily determined in accordance with the thickness of the sanding belt, which comes from the thickness of the base paper and base fabric to be bonded.

(Prior art) A grinding material passage is provided between the material transfer surface and the grinding surface of the sanding belt, and the gap between the passages is adjusted by relative movement of the material transfer surface and the sanding frame. A passage gap adjustment device is known in which a mounting table for the ground workpiece or its model is provided on one side of the frame, and a dial gauge that contacts the ground workpiece or its model is attached to the other side.

However, different thicknesses of sanding belts are used depending on whether it is for rough cutting, finishing cutting, hard material grinding, soft material grinding, etc. It does not display the required gap based on the thickness of the sanding belt, but it displays the gauge based on the thickest sanding belt, so the thickness of the sanding belt that will actually be used is determined based on that display. The disadvantage is that indexing must be done according to the

(Problems to be Solved by the Present Invention) The present invention aims to solve the above-mentioned drawbacks of the conventional device only by improving the gauge.

(Means for Solving the Problems) The present invention aims to solve the above problems, and consists of a dial gauge with an inner fixed plate through which a rotating pointer freely passes, and a ring-shaped scale. The invention is characterized in that the inner fixing plate has several types of indications showing the thickness of the sanding belt in descending order of thickness corresponding to the scale of the outer rotating plate. It is.

A preferred embodiment of the invention will now be described.

(Example) Fig. 1 shows an example of a belt sander equipped with a grinding material passage gap adjusting device which has been used conventionally and which also uses the gauge of the present invention. Deing frame 2
A material conveying belt table 4 is provided on an installation frame 1 and is moved up and down by the rotation of a handle 3, and a material conveying belt 7 is hung between a driven roll 5 and a driving roll 6 at the front and rear ends of the table 4. A support block 9 is provided which projects above the material transfer surface 8 with the upper running portion of the belt 7, and the sanding belt 12 is hung around the guide rolls 10, 10a and the tension/steering roll 11 attached to the block 9. A grinding unit 13 is installed between the rolls 10 and 10a to constitute a belt sander machine A, and in front of the grinding material input inlet 14 of the sander machine, a material conveying belt table 4 is placed at the same level as the material conveying surface. Mounting table 1
Attach the legs 16 of 5 and sanding frame 2.
, there is a gauge mounting frame 1 facing above the mounting table 15.
An arm 18 supporting the gauge 7 is attached to the gauge mounting frame 17, and a support tube 19 for a contactor 21 that rises slightly in contact with the ground material or its model placed on the mounting table 15, and a mounting portion 20 for the gauge 22 are attached to the gauge mounting frame 17. is provided, the material feeding table 4 is raised by the handle 3,
When the contactor touches the spindle 23 of the gauge 22 and the pointer swings as the ground workpiece or model on the mounting table 15 rises, the pointer is set to the 0 scale of the gauge 22.

The present invention improves the display of the gauge 22 described above, and the gauge 22 has a pointer 24 as shown in FIG.
An inner fixed plate 25 that freely rotates around the center.
and an outer rotating plate 26 with a scale 27 shaped like a ring.
It consists of a spindle 23 for rotating the above-mentioned pointer 24, and several kinds of indications 28 showing the thickness of the sanding belt 12 in order of thickness are provided on the inner peripheral fixed plate 25. The letters attached to each scale 27 are particle size symbols attached to the sanding belts 12 having different thicknesses.

In the sanding belt 12, the grain size of the abrasive grains differs depending on the purpose of grinding, and when the grain size differs, the thickness of the base paper and base cloth to which the grain size is attached also differs. The thickness of the sanding belt 12 can be known.

(Function of the invention) In the invention, the 0 scale of the outer rotating plate 26 is set to one of the indicators 28 indicating the thickness of the sanding belt 12 to be used, as shown in FIG.
As before, the spindle 23 is pushed onto the ground material placed on the mounting table 15 via the contactor 21, and the pointer 24 is oscillated until it coincides with the 0 scale as shown in the figure. FIG. 3 shows the sanding belt to which #60 abrasive grains are adhered and the gauge 22 when the passage gap is adjusted to suit each thickness of the workpiece or its model.

(Effect of the invention) Previously, in the device, the sanding belt 12
In order to install an appropriate passage gap according to the thickness of the material, as shown in FIG. , set the appropriate passage gap depending on the feeling, or set the passage gap based on the thickest sanding belt 12, and then make corrections according to experience to suit the thickness of the belt. However, by using the gauge of the present invention, the zero of the outer rotating plate 26 can be adjusted.
All you have to do is adjust the scale to the desired display 28.
This allows the passage gap to be set accurately to suit various thicknesses of the sanding belt 12, and has the effect of eliminating the need for experience.

[Brief explanation of the drawing]

FIG. 1 is a side view of a belt sander using the gauge of the present invention, FIG. 2 is a front view of the gauge of the present invention, and FIG. 3 is a front view showing an example of its use. 2 → sanding frame, 8 → material transfer surface,
12 → sanding belt, 15 → mounting table, 22
→ Gauge, 24 → Pointer, 25 → Inner rotating plate, 26
→Outer rotating plate, 27 → Scale, 28 → Display.

Claims (1)

[Claim for Utility Model Registration] A grinding material passage is provided between the material transfer surface and the grinding surface of the sanding belt, and the gap between the passages is adjusted by relative movement of the material transfer surface and the sanding frame. A mounting stand for the ground workpiece or its model is provided on either side of the sanding frame, and a dial gauge is attached to the other side. The sanding belt is composed of a ring-shaped outer rotating plate, and the inner fixed plate has several types of indications indicating the thickness of the sanding belt in descending order of thickness corresponding to the scale of the outer rotating plate. Features a dial for adjusting the gap between the passage of the material to be ground in a belt sander.