KR20010068473A - fatigue test apparatus for a attacnment holder of a mask-frame assambly in a CRT - Google Patents

Abstract

PURPOSE: A device of measuring the fatigue rate of the fixing holder of an assembler of the masks and frames of the CRT is provided to pick out the defective holders and to help design the configuration correspondingly. CONSTITUTION: In the device of measuring the fatigue rate of the fixing holder of an assembler of the masks and frames of the CRT, a fixing holder(15) is placed on a base(20). a fixing element(21) is formed on the base(20) to hold the fixing holder(15) on one side. A delivering element(23) is fixed on the podding part of an L-shaped supporting element(22). A moving shaft(24) and a pressure gauge(25) are moved vertically by the moving element(23). A pressing shaft(26) is for pressuring the fixing holder(15). A detecting sensor(27) measures the distance of the fixing holder's movement under pressure. A control unit(28) controls the moving element(23) and receives the data from the detecting sensor(27). A display(29) displays the data.

Description

Fatigue measuring apparatus for a attacnment holder of a mask-frame assambly in a CRT}

The present invention relates to a fatigue measuring device for a mask-frame assembly fixing holder of a cathode ray tube, and more particularly, to measure the fatigue of the fixing holder to sort out defects and good products of the fixing holder, and furthermore, in consideration of deformation or fatigue thereof. The present invention relates to a fatigue measuring apparatus for a mask-frame assembly fixing holder of a cathode ray tube.

In general, in order to maintain a constant distance q 'value 8 between the window mask of the cathode ray tube 10 and the front surface of the panel in FIG. 1, the q' value can be corrected according to the deformation of the shadow mask heated by the electron beam. The shadow mask frame assembly 13 is supported by the panel 11 via the bimetal or trimetal fixing holder 15. In Fig. 1, the dowel 12 represents the funnel and the dove 14 represents the inner shield.

Conventionally, it is used by welding to bimetal fixing holder 15, but recently trimetal plate joined in parallel with stainless steel is cut and bent into a predetermined shape to fix the trimetal fixing holder for supporting the shadow mask frame assembly. Use as (15).

The structure of the fixing holder 15 and the fixing and supporting structure of the shadow mask frame assembly are shown in FIG. Here, the trimetal fixed holder 15 has a first bent portion 15b and a second bent portion 15c, and a flat portion up to the first bent portion 15b is provided on the shadow mask frame assembly 13. It is welded and the stud pin opening 15a is formed in the flat part after the 2nd bending part 15C.

In addition, the stud pin 16 is fixed to protrude inward at a predetermined position of the panel 11.

Therefore, the shadow mask frame assembly 13 is supported by the panel 11 by inserting the opening 15a of the trimetal fixing holder 15 into the stud pin 16.

However, the trimetal fixed holder 15 of such a structure is not only unstable or displaced easily due to vibration or shock due to the elastic force, but also the shadow mask frame assembly 13 is detached. There is a problem that occurs.

In particular, in the screening process, the fixing holder 15 is frequently detached and the shadow mask frame assembly 13 is detached, thereby applying, exposing, and developing the slurry, photoresist, dag, and the like. If deformation occurs, it affects the screen quality.

In addition, heat deformation is further generated through the frit furnace and the exhaust furnace, and the deformation of the fixed holder 15 is intensified.

Accordingly, the present invention is to solve this problem, and to measure the fatigue of the fixing holder to screen the defects and good products of the fixing holder and furthermore to design in consideration of the deformation or fatigue of the mask-frame assembly fixing holder of the cathode ray tube The purpose is to provide a fatigue measuring device.

1 is a schematic partial sectional view showing a fixing holder of a shadow mask frame assembly of a conventional cathode ray tube;

2 is a detailed partial cross-sectional view of the "A" part of FIG.

Figure 3 is a schematic diagram showing the configuration of the fatigue measuring device of the mask-frame assembly fixing holder of the cathode ray tube according to an embodiment of the present invention.

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

10: cathode ray tube 11: panel

12: Funnel 13: Shadow mask frame assembly

15: fixed holder 20: base

21: fixing means 22: L-shaped post

23: feed means 24: feed shaft

25: pressure gauge 26: pressure shaft

27: displacement detection sensor 28: control unit

29: display unit

In order to achieve the above object, a fatigue measuring apparatus for a mask-frame assembly fixing holder of a cathode ray tube according to an embodiment of the present invention includes a base 20 for arranging the fixing holder 15 and an upper portion thereof. A fixing means 21 for fixing the fixing holder 15 disposed at one side thereof, an L-shaped support 22 provided on the base 20, and a transport fixed to the protrusion of the L-shaped support 22. Means 23, a feed shaft 24 conveyed up and down by the conveying means 23, a pressure gauge 25 connected to the feed shaft 24 and conveyed together, and the pressure gauge 25 And a displacement sensing sensor 27 for measuring a displacement amount of the fixed holder 15 when the pressure is applied by the pressure shaft 26 and a pressure shaft 26 for applying pressure to the fixed holder 15 while being conveyed together with the pressure. ) And its transfer means 23 and receive pressure and displacement from the pressure gauge 25 and the displacement sensor 27. And a display unit 29 for outputting a pressure and displacement signal from the control unit 28 and displaying the pressure and displacement signals from the control unit 28 to fix the shadow mask frame assembly 13 of the cathode ray tube 10. It is characterized by measuring the fatigue of 15).

It may be configured to include a counter 30 connected to the control unit 28 to control and display according to the number of times the pressure is applied to the fixed holder (15).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic diagram of a fatigue measuring apparatus of a mask-frame assembly fixing holder of a cathode ray tube according to an embodiment of the present invention.

In FIG. 3, the fatigue measuring apparatus of the fixed holder includes a base 20, a fixing means 21, a conveying means 23, a conveying shaft 24, a pressure gauge 25, a pressing shaft 26, and a displacement detecting sensor ( 27), the control part 28 and the display part 29 are comprised.

The base 20 is configured to arrange the fixing holder 15, and thus, fixing means such as a vise to fix the fixing holder 15 at one side when the fixing holder 15 is disposed on the base 20. 21 is installed on the base 20.

In addition, the conveying means 23 is fixed to the protruding portion of the L-shaped strut 22 provided in the base 20, and the conveying shaft 24 protrudes from the conveying means 23 so as to be conveyed up and down.

The pressure gauge 25 is connected to the feed shaft 24 so that the pressure gauge 25 is connected to the feed shaft 24 to measure the pressure on the fixed holder 15 by the lower pressure shaft 26 and input the pressure to the control unit 28.

The pressure shaft 26 is connected to the pressure gauge 25 to apply pressure to the fixed holder 15 while being conveyed together with the pressure gauge 25. In order to measure the displacement amount of the fixed holder 15 when pressure is applied by the pressure shaft 26, a displacement sensor 27 is installed on one side of the fixed holder 15.

The transfer means 23 is controlled to transfer the feed shaft 24, the pressure gauge 25, and the pressurization shaft 26 up and down, and the pressure and the displacement amount from the pressure gauge 25 and the displacement detection sensor 27. The fatigue measuring apparatus of the present invention includes a control unit 28 to receive an input, and furthermore, it is preferable that the display unit 29 receives the pressure and displacement signal from the control unit 28 and displays the same. It may also include a counter 30 connected to the control unit 28 to control and display according to the number of times the pressure is applied to the fixed holder (15).

According to the fatigue measuring apparatus of the mask-frame assembly fixing holder of the cathode ray tube configured as described above, first, the fixing holder 15 is fixedly installed through the fixing means 21, and then driven by a driving means such as a motor. When the conveying means 23 is operated, the conveying shaft 24 is lowered, and the pressing shaft 26 presses the fixed holder 15 accordingly.

At this time, when the control unit 28 is configured to act only up to a predetermined pressure, the conveying means 23 stops and rises due to the corresponding pressure signal from the pressure gauge 25, and the maximum detected by the displacement sensor 27. The displacement value is input to the controller 28 and output to the display unit 29 to output the displacement amount along with the counting count from the counter 30, and by repeating this process, the degree of fatigue can be known.

In addition, when the control unit 28 is set such that the pressing shaft 26 presses only the predetermined displacement amount, the conveying means 23 stops by the displacement signal, and then rises. The fatigue degree is displayed on the display unit 29.

According to the configuration and function of the fatigue measuring device of the mask-frame assembly fixed holder of the cathode ray tube according to the embodiment of the present invention described above, such as the transfer means 23, the pressure gauge 25 and the displacement sensor 27, By the configuration, it is possible to measure the fatigue degree of the fixed holder 15 of the cathode ray tube 10, so that the defects of the fixed holder 15 can be selected, and the quality can be improved by reflecting such fatigue degree in the design. Has the effect of.

Claims (2)

A base 20 for arranging the fixing holder 15, fixing means 21 for fixing the fixing holder 15 disposed on the base 20 at one side, and the base 20. An L-shaped strut 22, a conveying means 23 fixed to the projection of the L-shaped strut 22, a conveying shaft 24 conveyed up and down by the conveying means 23, and the conveying shaft ( A pressure gauge 25 connected to and conveyed together with the pressure gauge 25, a pressure shaft 26 for applying pressure to the fixed holder 15 while being transferred together with the pressure gauge 25, and a pressure shaft 26. When the pressure is applied, the displacement detection sensor 27 for measuring the displacement amount of the fixed holder 15 and the conveying means 23 are controlled, and the pressure and displacement amount from the pressure gauge 25 and the displacement detection sensor 27 are controlled. And a display unit 29 for receiving the control unit 28 and a pressure and displacement signal from the control unit 28 and displaying the signal. As a cathode ray tube (10) of the shadow mask frame of a cathode ray tube mask, comprising a step of measuring the fatigue of the fixing holder 15 of the assembly 13-frame assembly exhaustion measuring device for fixing the holder. 2. A mask-frame assembly of a cathode ray tube according to claim 1, comprising a counter (30) connected to said control portion (28) to control and display according to the number of times of applying pressure to the holding holder (15). Fatigue measuring device of fixed holder.