KR100985389B1 - The scribe head with apparatus for preventing loosening of bolt used in screwing the actuator - Google Patents

Abstract

The present invention prevents the bolt used for adjusting the actuator clamping force from the glass scribe head arbitrarily loosened by the vibration of the actuator, and can easily fix the bolt head in response to the change in the tightening position of the bolt, so that the adjustment work is very simple. The scribe head is provided with a bolt loosening prevention function for adjusting the actuator clamping force, the bolt 22 for adjusting the clamping force of the actuator 20 installed in the tubular case 10 is the upper portion of the case 10 A scribe head screwed to the upper cap 12 to be closed, the scribe head comprising: washer support portions 12a and 12b extending upward from an upper edge of the upper cap 12; A bolt head fitting hole 40a is formed at an inner side of the bolt head 22a of the fastening force adjusting bolt 22, and an outer side thereof is supported by the washer support parts 12a and 12b to prevent rotation. 40);

Glass scribe head, actuator clamping force adjusting bolt

Description

Scribe head with apparatus for preventing loosening of bolt used in screwing the actuator}

The present invention relates to a scribe head, and more particularly, to prevent loosening of the bolt for adjusting the actuator clamping force used in the glass scribe head, and to easily fix the bolt head in response to a change in the tightening position of the bolt. The present invention relates to a scribe head equipped with an anti-loosening bolt for adjusting actuator tightening force, which can be performed very easily.

Many glass scribe heads are known which vibrate a diamond tip to cut a workpiece. Such a scribe head is provided with an actuator for vibration, a tip for generating a crack in the workpiece, a horn connecting the actuator and the tip and the like.

The scribe head is a vibration generated by an actuator using a piezo oscillation element is transmitted to the diamond tip that is held in the holder through the horn so that the diamond tip vibrates up and down to generate cracks on the glass. .

The scribe head uses an appropriate bolt to adjust the clamping force of the actuator. The fastening force adjusting bolt is formed by screwing the upper part of the scribe head body, the operator is to adjust the actuator fastening state of the desired state by tightening or loosening this bolt.

By the way, the fastening force adjustment bolt installed as described above is often loosened gradually in the tightening position initially set by the vibration transmitted as the actuator vibrates.

In this case, the vibration width of the actuator becomes smaller, which causes a problem that the crack for the panel cannot be generated at an appropriate depth.

In addition, such a conventional scribe head has a problem that it is not easy to set the vibration width of the actuator as needed.

That is, in the conventional scribing head, the actuator fastening force adjusting bolt is not used to be fixed while being screwed once, but is used to be tightened or loosened frequently according to the thickness or the degree of bending of the workpiece, and to precisely adjust the actuator vibration width. Since the equipment is not provided separately, it is not easy for the operator to set the actuator vibration width appropriately.

The present invention has been made in order to solve the above problems, the bolt used for adjusting the actuator clamping force in the glass scribe head to prevent the bolt from being arbitrarily loosened by the vibration of the actuator, simply corresponding to the change in the fastening position of the bolt bolt head To provide a scribe head with a bolt loosening prevention function for adjusting the actuator clamping force can be fixed so that adjustment can be performed very easily.

The present invention has the following means to solve the above object.

The present invention is a bolt 22 for adjusting the fastening force of the actuator 20 installed in the tubular case 10 is screwed to the upper cap 12 for closing the upper portion of the case 10 is provided with a scribe head A washer support part (12a, 12b) extending upward from an upper edge of the upper cap (12); A bolt head fitting hole 40a is formed at an inner side of the bolt head 22a of the fastening force adjusting bolt 22, and an outer side thereof is supported by the washer support parts 12a and 12b to prevent rotation. 40);

The washer 40 is preferably octagonal.

Preferably, the bolt head fitting hole 40a is hexagonal.

It is preferable that the inner angle of one vertex of the bolt head fitting hole 40a formed in the washer 40 and one vertex of the rim of the washer 40 constitute 7.5 °.

The present invention has the effect of preventing the clamping force adjusting bolt used to adjust the actuator clamping force in the glass scribe head to be arbitrarily loosened or loosened by the vibration of the actuator.

In addition, the present invention can be easily fixed to the bolt head in response to the change in the fastening position of the bolt has the effect that the actuator vibration width adjustment operation can be performed very simply.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

1 is a schematic perspective view of a scribe head with a bolt loosening prevention function for adjusting the tightening force of the actuator according to the present invention, Figure 2 is a longitudinal cross-sectional view of the scribe head shown in Figure 1, Figure 3 is an upper portion shown in Figure 1 4 is a plan view of FIG. 3, and FIG. 5 is a longitudinal sectional view of FIG. 4.

As shown in FIGS. 1 and 2, the scribe head provided with an actuator fastening force adjusting bolt loosening function according to the present invention has a tubular case 10, an upper cap 12, a lower cap 14, and a tip holder 16. ), The fixed portion 18, flat springs (30, 32), fastening force adjustment bolt 22, the horn 34 and the like is applied to the scribe head.

The actuator 20 is fixed to the upper and lower holders 26 and 28 to generate vibrations that cause cracks in the workpiece. In the upper portion of the actuator 20 is configured an upper cap 12 is fastened to the case 12 so that the actuator 20 can vibrate within a limited range.

The vibration of the actuator 20 is transmitted through the horn 34 to the diamond tip 36 fixed to the holder 16. The horn 34 has elastic restoring force by the flat springs 30 and 32. The first flat spring 30 is fitted from the top of the horn 34 and the second flat spring 32 is supported from the bottom of the horn 34. The elastic force of the flat springs 30 and 32 depends on the thickness, the slit size, and the like.

Meanwhile, an actuator fastening force adjusting bolt 22 is screwed to the upper cap 12. 3 to 5 show the upper cap 12 and the fastening force adjusting bolt 22 and washer coupled thereto in detail. As shown, the fastening force adjusting bolt 22 is installed in the upper cap 12, and the fastening force adjusting bolt 22 is such that the bolt head 22a is prevented from rotating in the bolt head fitting hole 40a of the washer 40. It is fixed. It is preferable that the bolt head 22a is hexagonal in cross section, and it is preferable that the fitting hole 40a in which this bolt head 22 is fitted is also hexagonal.

Preferably, the washer 40 has an octagonal cross section. The edge of the washer 40 is supported by the washer support portions 12a and 12b extending upward from the upper edge of the upper cap 12 to prevent rotation. It is preferable that the washer support portions 12a and 12b extend from each side of the quadrilateral upper cap 12, respectively.

A steel ball 24 is interposed between the hole groove 22c formed in the screw 22b of the fastening force adjusting bolt 22 and the groove 26a formed in the upper holder 26. The ball 24 prevents the actuator 20 from tilting even when the fastening force adjusting bolt 22 and the center axes of the actuators 20 and the horns 34 do not coincide with each other. When the actuator 20 is not inclined as described above, the upper surface of the actuator 20 and the bottom surface of the upper holder 26 are always in surface contact, and thus the life of the actuator 20 is lengthened. 20) also has the effect of preventing the twist.

The fastening force adjusting bolt 22 is to be able to preset the fastening force of the actuator 20 in accordance with the depth to be screwed through the upper cap 12. The operator tightens or loosens the tightening force adjusting bolt 22 to set the proper tightening force of the actuator 20, and then inserts the washer 40 into the washer support 12a, 12b while inserting the bolt head 22a into the fitting hole 40a. It is installed to prevent the fastening force adjustment bolt 22 to rotate so that the adjusted fastening force is kept constant.

A method of fastening the fastening force adjusting bolt 22 and the washer 40 configured as described above will be described with reference to FIGS. 6 and 7A to 7C. First, FIG. 6 shows all the positions of the bolt head fitting holes 40a which may appear when the washer 40 is fastened at an arbitrary angle, and FIGS. 7A to 7C are in the fastening position of the fastening force adjusting bolt shown in FIG. It is a figure for demonstrating the method of fitting a washer to a bolt head.

According to an embodiment of the present invention, one vertex (small 'a') of the bolt head fitting hole (40a) formed in the washer (40) and one vertex (large 'A') of the rim of the washer (40) form an angle of 7.5 °. The case will be described.

Here, the angle at which the vertex 'A' of the octagonal vertex of the washer 40 and the adjacent vertex 'a' of the inner hexagonal fitting hole 40a is eccentric can be adjusted according to the intention of the operator. have.

In the present invention, the minimum size of the actuator 20 fastening amount adjusted through the fastening force adjustment bolt 22 is vertex A of the octagon washer 40 and vertex a of the hexagonal fitting hole 40a adjacent thereto is 7.5. Since it is eccentric, it becomes the distance which the screw part 22b moved when the fastening force adjustment bolt 22 was rotated by 15 degrees. Since the fastening force adjusting bolt 22 can adjust the fastening force of the actuator 20 in units of 15 °.

When the number of the vertices of the fitting hole 40a is increased, more precise tightening force can be adjusted. However, when the fitting hole 40a is hexagonal as in the present invention, if the pitch of the tightening force adjusting bolt 22 is 1 mm, 40 Bolt fastening is possible in the unit of μm, and when the pitch is 0.5 mm, bolt fastening is possible in the unit of 20 μm.

7A to 7C, the clamping force adjustment and the washer 40 will be described in more detail.

FIG. 7A shows the initial state in which the bolt head 22a is fitted into the fitting hole 40a and the washers 40 are installed in the washer support portions 12a and 12b to adjust the tightening force of the actuator 20. FIG. Fig. 7C shows the correlation with the washer 40 when the head 22a is rotated 15 ° clockwise (tightening the bolt by 40 mu m and the tightening force of the actuator is increased by the corresponding spring force). Correspondence with washer 40 when (22a) is rotated 30 ° clockwise (tightening the bolt 80㎛ to increase the tightening force of the actuator by the corresponding spring force). In FIG. 7A the washer 40 and the bolt head 22a are shown separately to aid in understanding the invention.

First, as shown in FIG. 7A, one vertex 'A' of the octagonal washer 40 is zip-directed than one vertex 'a' of the hexagonal fitting hole 40a, and the washer 40 is disposed. The other vertex of 'B' is leftward biased than the other vertex 'b' of the fitting hole 40a.

Accordingly, in the initial tightening force setting state, one vertex '1' of the bolt head 22a is 7.5 ° left-facing at the vertex 'A' of the washer 40, and the other vertex of the bolt head 22a is 'b') is oriented 7.5 ° from the washer 40 vertex 'b'.

In this state, when the washer 40 is lifted to rotate the bolt head 22a to adjust the tightening force, and then rotated 15 ° clockwise as shown in FIG. 7B, the vertex of the bolt head 22a ('1'). ) Is 7.5 ° post-directed over washer 40 vertex 'A' at the initial position. As the bolt head 22a is rotated as described above, since the vertex '1' of the bolt head 22a is oriented toward the posture of the washer 40 vertex 'A', the vertex 'b' of the fitting hole 40a is changed. When the vertex 'b' of the fitting hole 40a which is oriented toward the postal position of the washer 40 is aligned with the vertex '1' of the bolt head 22a, the washer 40 is fastened. It's done.

FIG. 7C illustrates a method of fastening the washer 40 when the bolt head 22a is rotated 30 ° in an initial state. The fastening method is similar to that when the bolt head 22a is rotated 15 degrees.

In other words, when the bolt head 22a is rotated 30 °, the vertex '1' of the bolt head 22a becomes 22.5 ° postal than the vertex 'A' of the washer 40 at the initial position. Therefore, since the vertex 'c' of the fitting hole 40a is oriented 22.5 ° from the washer 40 vertex 'C', the vertex 'c' of the fitting hole 40a is set to the bolt head 22a. Just snap it to the vertex ('1').

Subsequently, when the bolt head 22a is rotated 45 °, the state is returned to the state shown in FIG. 7A, so that the vertex 'a' of the fitting hole 40a is aligned with the vertex '1' of the bolt head 22a. Insert it.

As described above, the present invention prevents the bolts used for adjusting the actuator clamping force by using the octagonal washer 40 formed with the hexagonal bolt head fitting holes 40a to be arbitrarily loosened by the vibration of the actuator, and the bolts The bolt head can be easily fixed in response to the change in the fastening position of the screw, making adjustment very easy.

1 is a schematic perspective view of a scribe head having a function of preventing bolt loosening for adjusting a fastening force of an actuator according to the present invention.

FIG. 2 is a longitudinal sectional view of the scribe head shown in FIG. 1; FIG.

3 is a detailed view of the upper cap portion shown in FIG. 1.

4 is a plan view of FIG.

5 is a cross-sectional view of FIG. 4.

6 is a view showing a position change appearing in the washer as the tightening force adjusting bolt shown in FIG. 4 rotates by 15 °.

7 is a view for explaining a method of fastening the washer to the bolt head according to the fastening position of the fastening force adjustment bolt shown in FIG.

* Brief description of the main parts of the drawings

10: case 12: upper cap

12a, 12b: washer support 12c: ball hole

14: lower cap 16: tip holder

18: fixing part 20: actuator

22: fastening force adjusting bolt

22a: bolt head 22b: bolt thread

22c: ball groove

24: ball

26: upper holder 28: lower holder

30: first elastic member 32: second elastic member

34: Horn 36: Tips

38: fixing bolt 40: washer

40a: Bolt head fitting hole

Claims (4)

In the scribe head in which a bolt 22 for adjusting the tightening force of the actuator 20 installed in the tubular case 10 is screwed to the upper cap 12 closing the upper portion of the case 10. Washer support parts (12a, 12b) extending from the upper edge of the upper cap 12 to the upper portion; A bolt head fitting hole 40a is formed at an inner side of the bolt head 22a of the fastening force adjusting bolt 22, and an outer side thereof is supported by the washer support parts 12a and 12b to prevent rotation. 40), The hole 22c formed in the threaded portion 22b of the bolt 22 for adjusting the clamping force and the groove 26a formed in the upper holder 26 are formed of the bolt 22, the actuator 20, and the horn 34. The scribe head with a bolt loosening prevention function for adjusting the actuator fastening force, characterized in that the ball 24 for interposing the central axis to prevent the actuator 20 is inclined. The method of claim 1, The washer 40 is a scribe head is provided with a bolt loosening prevention function for adjusting the actuator tightening force of the octagonal rim. 3. The method of claim 2, The bolt head fitting hole (40a) is a scribe head having a bolt loosening prevention function for adjusting the actuator clamping force is formed by drilling in a hexagonal shape. The method of claim 3, wherein One vertex ('a') of the bolt head fitting hole (40a) is a scribe head having a bolt loosening prevention function for adjusting the actuator tightening force is 7.5 ° eccentric from one vertex ('A') of the washer (40).

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