JPS6031919Y2 - Dimensioning device for cutting abrasive paper pieces for abrasive tools - Google Patents

Description

[Detailed description of the invention] This invention is a material for a rolled-up molded product of abrasive paper called a paper cone or the like.

This invention relates to a sizing device for obtaining trapezoidal abrasive paper pieces with long hypotenuses using a cutting machine.

The conical abrasive tool shown in FIG. 1, which is widely used for dental and other technical applications, is made by holding a trapezoidal abrasive paper 16 with a long oblique side between two forked shafts 18, with the abrasive surface facing outward, as shown in the manufacturing diagram of FIG. It is formed by rolling it up and gluing the end 17.

To obtain abrasive paper pieces from a regular length of abrasive paper, a cutting machine of the same type used in the printing industry is used to cut stacks of over 100 sheets of abrasive paper.
Unlike obtaining a rectangular piece of paper, it is not possible to move the base paper using a feed handle, so a template of the same shape as the abrasive paper piece 16 is prepared and the abrasive paper 12 shown in FIG. Since the cutting is done sequentially according to the template as shown in Figure 13, there are problems in terms of safety, time, and accuracy.

This invention achieves its purpose without using a template, by using a mechanism that transports the cutting board device, which serves as a base for cutting blades of stacked abrasive paper, to a set position.

In Figures 3 and 4, the original blade holder of the cutting machine has a horizontally long flat iron 1 fitted into the groove 11 from which the material has been removed, and a bridge-like shape perpendicular to the groove 11 at both ends of the upper surface of the flat iron 1. Fix iron 2,
A horizontally long H-shaped metal fitting with a pair of rollers, which is constructed by attaching rollers 4 to the front upwards of the bridge iron 2 with shafts 3, is placed on the surface plate of the cutting machine, and a rectangular cutting board main body 5 is installed separately. A pair of rails 7 for door wheels are attached to both sides of the long sides with elastic bodies 6 such as sponge rubber in between, with the surface facing outward, using two wood screws 8 each, and a cutting board device including these rails is installed. They are sandwiched between the pair of rollers 4 and assembled so that they can be pulled out.

The rail 7 has a plurality of cutouts 10 at preset regular intervals, W cutouts 10 in the figure, and the left and right cutouts 10 abut against the roller 4 when the cutting board device is pulled out.

This hit is called the feed moderation mechanism.

The plan view in Fig. 3 shows the initial setting position of this device, where the first notches on both side rails 7 face the pair of rollers 4, and more than 100 sheets of abrasive paper are piled up with sand. The cutting board device is placed with the surface facing down, approximately in the center of the cutting board device, so that the decorative cutting board 14 is directly above the flat iron 1.

The abrasive paper 12 has dimensions indicated by dotted lines 13 in the figure, and 18 trapezoidal abrasive paper pieces are obtained.

If the cutting board device is straightened and pulled out immediately after cutting, the second notches of the two rails on both sides will face the pair of rollers 4, and if cutting is repeated in that way, the abrasive paper pieces will be removed. The cutting on the hypotenuse is skipped and omitted, resulting in only nine rectangular pieces of paper, the size of two trapezoids.

This has a mass production effect for obtaining rectangular pieces of paper for other purposes.

To cut the hypotenuse part as well, as shown in Figure 4, leave the right roller in the first notch and pull out only the left side.
If the paper is cut with the th notch facing the left roller, it will be cut along the chain line 15 and the first piece of abrasive paper will be obtained.

Next, pull out only the right side to get the second piece of abrasive paper, and in this order, use the moderation mechanism one step at a time alternately on the left and right, as if walking from the pair of rollers 4 left, right, left, right. As a result, up to 18 pieces of abrasive paper can be obtained as shown by the dotted line 13 of the abrasive paper 12 in FIG. 3.

As shown in Figure 4, only when the left side is pulled out one step more than the right side, the cutting board device becomes oblique with respect to the fixed width of the roller gate.
is contracted by external pressure to help pull it out of the gate.

In order to fully utilize the effect of the elastic body 6, it is desirable that the through hole 9 formed in the rail 7 be looser than the diameter of the wood screw 8.

The bottom dead center of the cutting blade when cutting is adjusted upward by the thickness of the cutting board 5, but if the cutting board is made of polyethylene or the like, it is suitable as a blade holder.

The device for obtaining trapezoidal abrasive paper pieces of specific dimensions is determined by the distance between the notches to be processed into the rail, the width of the pair of rollers 4 and the corresponding size of the cutting board device, and the arrangement of the abrasive paper on the cutting board. It can be easily designed by drawing.

If the cutting blade is sufficiently large for this device, the flat iron 1 temporarily fixed in the blade receiving groove 11 can be slid sideways to use the entire width of the cutting blade on average.

When using this device, the abrasive paper to be cut, the cutting board device, and the oblong H-shaped metal fitting with a pair of rollers are stacked and assembled on the surface plate of the cutting machine.
Although it is movable during preparation, each time the paper is cut, it is held between the surface plate and pressurized by the paper presser attached to the cutting machine and fixed, so there is no problem with cutting.

According to the device of this invention, compared to the conventional operation using a template just before the cutting blade falls, it is possible to quickly obtain a uniformly cut workpiece with safety, no accumulation of errors, and less loss. As a result, the rolled product can be made uniform, contributing to product reliability.

[Brief explanation of the drawing]

Figure 1 is a slope view of a conical polishing tool, Figure 2 is a schematic diagram of manufacturing this polisher, Figure 3 is a plan view of the device of this invention, and Figure 4 is a slope view of the main part showing an example of the operation of this invention. It is a diagram.

Claims (1)

[Scope of utility model registration request] The blade holder of the cutting machine has a horizontally long flat iron 1 fitted into the groove 11 from which the material has been removed, and bridge irons 2 perpendicular to the groove 11 are fixed to both ends of the upper surface of the flat iron 1. 1 consisting of rollers 4 mounted on shafts 3 facing upward at the front.
A horizontally long H-shaped metal fitting with a pair of rollers is fixed on the surface of the cutting machine, and a pair of rails 7 for a door roller are placed on the surface by sandwiching elastic bodies 6 on both long sides of the rectangular cutting board main body 5. are attached outwardly with two wood screws 8 each, and a cutting board device including a rail is sandwiched between the pair of rollers 4 and assembled so that it can be pulled out, and cutouts 10 at preset regular intervals are formed in the rail 7. A device for measuring dimensions for cutting a piece of abrasive paper for an abrasive tool, in which the contact with a roller 4 is used as a moderation mechanism for feed of a drawer for each cutting.