KR200199371Y1 - A line draw apparatus - Google Patents

Abstract

The present invention relates to a scribing apparatus that allows to draw a line exactly on a surface of a round object such as flat plates or pipes regardless of material or type.

According to a preferred embodiment of the scribing apparatus according to the present invention, left and right symmetrical installations are arranged on the saddle 13 body to which the handle 13a is attached so that the rollers 10 are parallel to each other. 11) and the bearing 12 is inserted, and writing instruments fixing device 30 which can be fixed to the front and rear, the position by the magnets (14, 15) installed up and down, the saddle 13 It is preferable to attach the graduation tape measure 20 to the front surface.

According to the present invention, it is possible to construct the drawing line exactly as desired in the flat or curved portion, thereby minimizing the loss caused by the drawing work that is irregularly performed in the field and to establish the working standard, and at any time Line drawing can be easily performed, and accurate distance can be measured by providing a scale tape measure in front of the line drawing device.

Description

{A line draw apparatus}

The present invention relates to a scribing apparatus, and more particularly, to a scribing apparatus capable of constructing the scribing exactly as desired on the surface of a round object such as flat plates or pipes regardless of the material and type.

In general, in the work site, a lot of line drawing operations are performed on the premise of cutting, welding, and fitting. In order to draw a straight line on a flat plate with a desired size, one side of the plate having the most straight state is generally used as a reference plane. Move the ruler as shown and mark it several times and connect the display to make a straight line.

As a result of the line drawing in this manner, the state of the straight line becomes very poor as shown in FIG.

In the same manner as in the case of a cylindrical tube such as a pipe, in general, a scribing operation is performed using scribing aids (paper, flat iron, etc.) such as FIGS. 3 and 4 in the field. Auxiliary devices that can prevent a slight hand shake, that is, anything that can be easily obtained on site can be used. Such a device is not intended for normal line drawing.

Therefore, the condition of the line becomes very poor, and even if the cutting work is done along the line after the drawing, the cutting surface is uneven. have.

In addition, it is difficult and difficult to match in the case of large size, which requires a lot of time and money.

Therefore, the present invention was devised to solve the conventional problems as described above, and it is possible to construct a straight line efficiently and efficiently in order to minimize the loss caused by anomalous drawing work that is made in the field and establish a work standard. It is an object of the present invention to provide a line drawing device.

1 is a detailed view showing a working method of drawing a line on a conventional flat plate.

Figure 2 is a plan view showing the results when the line is drawn on a flat plate by a conventional method.

3 and 4 are state diagrams showing a method of drawing a line on a conventional cylindrical object.

5 is a perspective view of the present invention line drawing device.

6 is a front view of the present invention line drawing device.

7 is a cross-sectional view of the writing instrument fixing device applied to the present invention,

8 is a plan view showing a coupling relationship between the writing instrument fixing device and the magnet stopper applied to the present invention.

Figure 9a is a state diagram showing a state in which the length measuring device applied to the present invention is coupled to the line drawing device.

9B is a plan view of FIG. 9A.

9C is a partial cross-sectional view of the fixing plate of FIG. 9A;

9D is a front view of FIG. 9A;

10 is a cross-sectional view of the roller of FIG.

<Explanation of symbols for the main parts of the drawings>

10, 10a, 10b: roller 11: shaft

12: bearing 13: saddle

13a: handle 14, 15: magnet

20: tape measure 21: fixed plate

30, 30a, 30b: writing instrument fixing device 31: outer cylinder

32: inner cylinder 33: writing instruments

34: leaf spring 35: coil spring

36: face plate 37: protrusion

40: flat plate 50: circular object

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Preferred embodiment of the scribing device according to the present invention,

The saddle 13 to which the handle 13a is attached is installed symmetrically to the left and right so that the roller 10 is parallel to the body, and the shaft 11 and the bearing 12 are inserted into the roller 10, On the back and the back, a writing instrument fixing device 30 that can be fixed to the position by the magnets (14, 15) installed up and down is installed, attaching a scale tape measure 20 to the front of the saddle (13) desirable.

FIG. 5 is a perspective view of the present invention drawing device, FIG. 6 is a front view of the present invention drawing device, FIG. 7 is a cross-sectional view of the writing device fixing device applied to the present invention, and FIG. 8 is a writing device fixing device and the magnet applied to the present invention. 9A is a plan view illustrating a coupling relationship with a stopper, and FIG. 9A is a diagram illustrating a state in which a length measuring device applied to the present invention is coupled to a line drawing device. FIG. 9B is a plan view of FIG. 9A, and FIG. 9C is a fixed plate of FIG. 9A. FIG. 9D is a front view of FIG. 9A, and FIG. 10 is a sectional view of the roller of FIG. 1.

As shown in FIG. 5, the ball bearing 12 and the shaft 11 are combined with the main body of the saddle 13 to connect the round rollers 10a and 10b to the saddle 13 so that the intervals before and after are parallel to each other. By assembling and installing at right angles, the rollers 10a and 10b are assembled in such a way that the rollers 10a and 10b do not meander and always progress in a straight line when they are pushed by contact.

The inner cylinder 32 is installed inside the outer cylinder 31 on the front and rear of the completed drawing device as shown in FIG. 7, and the writing spring 33 is provided with a leaf spring 34 that can fix the writing instrument 33 inside the inner cylinder. When inserting the coil spring, there is no movement, and the coil spring 35 is inserted into the writing instrument outer cylinder 31 to cushion the excessive force applied to the writing instrument 33 because the surface of the drawing base material is uneven. The reason is that the proper pressure is applied during the drawing operation so that a clear line appears in the place where the writing instrument 33 passes.

Outside the writing instrument fixing device configured as described above, the protrusions 37 are fixed by other methods such as welding to enable the saddle 13 to be fixed by other methods such as riveting 37, and the protrusions 37 are saddles 13. It is machined to the processing tolerance so that it can move freely without shaking through the hole in the inside of the face plate 36 fixed with.

Therefore, the protrusions 37 are inserted into the saddle 13 so that they can be freely rotated up and down to the upper and lower magnets 14 and 15 without shaking, and the writing implement fixing device is identical to the front and rear of the saddle 13. It is installed by the method, and it is easy to draw a line in which direction the drawer is used.

In addition, the accurate distance is measured when the gradation tape measure 20 is installed on the front of the scribing device configured as described above in the same manner as in FIGS. 9A to 9D.

Referring to the operation of the above content in detail as follows.

First, hold the handle 13a of the scribing device and place the scribing device on the material to be lined, that is, on a flat plate or a round base material such as a pipe, and move it in the direction of the line drawing to see how many straight lines you want to draw. If it is determined that the hand is fixed so as not to move the writing fixture fixing device 30 is rotated from the magnet 15 position to the magnet 14 position to fix and then the amount of pressing of the writing instrument 33 is moved up and down appropriately.

Next, after removing the scale tape 20 to fix one end by adjusting the scale, when the line is drawn with a drawer, the scale tape 20 fixed to the drawer is taken out so that the distance drawn is measured.

When the preparation for drawing is completed in this way, when the drawing device is pushed while keeping the drawing device in close contact with the plate from left to right, the rollers 10a and 10b are rolled and moved, and an arbitrary line is generated by the writing instrument 33 by the moved distance. In this way, several straight lines can be constructed in either direction while moving the interval continuously.

In addition, in order to draw a line perpendicular to any straight line drawn by the above-described method, 1, 2, 3,... Shown in the front cross section of the roller 10b in FIG. 5 are also applied to the rear cross section of the roller 10b. Since the scales 1,2,3 ... are displayed in the same way as the front cross section, place the scribing device at a right angle so that you can draw at right angles on the straight line created by the scribing operation. If you draw a line by matching it before and after the line, you can construct the line at right angles to the existing line.

For example, when the line drawing device is moved in a direction perpendicular to the existing line by matching the portions having the front 1.5 scale and the rear 1.5 scale before and after the existing straight line, the straight line is drawn at right angles to the existing line.

As described above, according to the present invention, since the line drawing can be accurately drawn as desired in the flat or curved portion, it is possible to minimize the loss caused by the drawing work that is irregularly performed in the field and to establish a work standard. In addition, under any conditions, it is easy to draw a line at a time, and accurate distance can be measured by providing a scale tape measure on the front of the draw device.

Claims (1)

The saddle 13 to which the handle 13a is attached is installed symmetrically to the left and right so that the roller 10 is parallel to the body, and the shaft 11 and the bearing 12 are inserted into the roller 10, On the back and the back, the writing instruments fixing device 30 that can be fixed to the position by the magnets (14, 15) installed up and down is installed, the scale tape 20 attached to the front of the saddle (13) Line drawing device characterized by the above-mentioned.