KR100290836B1 - Inner Shield Manufacturing Equipment for CRT - Google Patents

Abstract

The present invention relates to a CRT inner shield manufacturing apparatus for facilitating the production of the inner shield to obtain an effect of improving productivity, reducing materials, as well as reducing workforce;

Inside the panel 12 of the CRT 11 and the funnel 13 interposed in the rear of the frame 15 supporting the shadow mask 14, which is a reticulated thin plate, to prevent oxidation and heat absorption during the CRT manufacturing process. In manufacturing the inner shield 10 to perform the function of preventing the reflection of the electron beam and to prevent the geomagnetic influence of the electron beam emitted from the electron gun;

A lower mold 22 installed on the upper surface of the base 20 'and an upper mold 23 positioned on the upper side of the lower mold 22 to move up and down;

The inner shield manufacturing apparatus configured by sequentially placing the piercing part 25, the primary bending part 26, the secondary bending part 27, and the forming and cutting part 28 in the upper and lower molds 23 and 22. To 20;

It is characterized in that the inner shield 10 is completed while continuously supplying the parent material 21 wound into a roll type while piercing, primary bending, secondary bending, forming and cutting are sequentially performed.

Description

Inner shield manufacturing equipment for CRT.

The present invention relates to an inner shield manufacturing apparatus for a braun tube, and more particularly, to facilitate the production of the inner shield (INNER SHIELD) to improve the productivity, material savings, as well as to provide an improved manufacturing apparatus to reduce the workforce It is about.

Inner shield for CRT is a thin metal interior product used in the frit process of CRT manufacturing process. It performs anti-oxidation, heat absorption and anti-reflective function of electron beam during CRT manufacturing process, and electrons emitted from electron gun It serves to prevent the geomagnetic influence of the beam.

This inner shield 10 is as in FIG. 1;

The inside of the panel 12 and the funnel 13 of the CRT 11 is interposed in the rear of the frame 15 supporting the shadow mask 14 which is a reticular and extremely thin plate body.

The inner shield as described above is completed by forming a metal thin plate, washed with a hydrocarbon-based detergent, and treated with a blackening film (Fe ₃ O ₄ ), and forming a special alloy plated material on the surface of the thin metal to form a hydrocarbon-based material. There are two types of cleaning done with cleaning agents.

Looking at the prior art for manufacturing such an inner shield is completed in four processes.

A blanking process 3 for making the parent material 1 into the shape of the inner shield 2;

A piercing process (5) for forming a fixed hole, a connection hole, and an opening (4) in the blanking finished parent material (1);

The primary bending process 6 for bending and molding the parent material 1 passed through the piercing process 5 and the secondary bending process for forming the primary banded parent material 1 into a complete inner shield 2. It consists of (7).

In the prior art as described above, a separate mechanical device (press mold) required for each process should be provided, and an operator must be positioned for each process to supply and discharge materials.

Therefore, to complete a single inner shield, it has to go through four steps, which leads to a significant decrease in productivity. In particular, it requires a lot of manpower and a dedicated machine for blanking, piercing, and primary and secondary banding. There were various problems such as the cause of the cost increase due to the increase of equipment cost.

Therefore, in the present invention, the production of the inner shield is completed in one process to solve the above problems, thereby improving productivity, reducing material consumption, as well as reducing manpower and other equipment costs. For the purpose.

1 is a half sectional view of a CRT for illustrating the present invention.

2 is a view showing an inner shield manufacturing process to which the prior art is applied.

3 is a plan view of the inner shield manufacturing apparatus to which the technique of the present invention is applied.

Figure 4 is a front view of the inner shield manufacturing apparatus to which the technique of the present invention is applied.

Figure 5 is an excerpt perspective view of the take-out loader is applied to the inner shield forming apparatus of the present invention to take out the completed inner shield.

* Description of the symbols used in the main parts of the drawings *

10; Inner shield

22; Bottom mold

23; Upper mold

25; Piercing Part

26; 1st Bending Part

27; 2nd Bending Part

28; Forming and Cutting Part

38; Roll feeder

40; Take out loader

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the preferred embodiment of the present invention for achieving the above object.

1 is a half sectional view of a CRT for explaining the present invention, FIG. 3 is a plan view of an inner shield manufacturing apparatus to which the technique of the present invention is applied, FIG. 4 is a front view of an inner shield manufacturing apparatus to which the technique of the present invention is applied, and FIG. It demonstrates together as an extracting perspective view of the extraction loader which takes out the completed inner shield applied to the inner shield shaping | molding apparatus of this invention.

The inner shield 10 interposed in the rear of the frame 15 supporting the shadow mask 14, which is a reticular body and an extremely thin plate body, in the panel 12 and the funnel 13 of the CRT 11 is in the CRT manufacturing process. It is a sheet metal embedded product used in the frit process. It performs anti-oxidation, heat absorption, and anti-reflection of the electron beam during the manufacturing process of the CRT and prevents the geomagnetic influence of the electron beam emitted from the electron gun. To perform.

In the present invention, the inner shield 10 is continuously manufactured by supplying a roll-type parent material 21 to the inner shield 10 manufacturing apparatus 20.

The inner shield manufacturing apparatus 20 is located on the upper side of the lower mold 22 and the lower mold 22 installed on the upper surface of the base 20 ', and the upper mold is lifted and lowered by a press slide (Press Slide) ( 23).

In the upper and lower molds 23 and 22, the piercing part 25, the primary bending part 26, the secondary bending part 27, and the forming and cutting part 28 are sequentially disposed, and the lower mold 22 On the primary bending part 26, the secondary bending part 27 of the) is further provided with a positioning pin 30 for accurate positioning of the parent material 21 to be supplied.

The piercing part 25 is not necessary for making the shape of the mother material 21 supplied to the piercing part 25 and is a means for improving the transportability of the mother material 21 continuously supplied. After cutting a and b of scraps a, b and c to be a portion, a portion of the positioning hole 32 which can be coupled to the bead 31 forming portion and the positioning pin 30 is further formed on the c portion. Form.

On the forming and cutting part 28, molding means for completely molding the inner shield 10 that is temporarily molded by secondary bending and cutting means for cutting the scrap c portion forming the beads 31 are provided together. do.

The inner shield manufacturing apparatus 20 is provided with a roll feeder 38 wound around the parent material 21 to enable continuous supply of the thin material mother material 21 to the rear of the inner shield manufacturing apparatus 20, and a molded inner shield at the front ( A takeout loader 40 for taking out 10 is provided.

The take-out loader 40 guides the movement of the rodless cylinder 42 and the rodless cylinder 42 fixed on the frame 41 which is erected to protrude upward from both front sides of the inner shield manufacturing apparatus 20. Guide bar 43 is provided for.

At the lower end of the rodless cylinder 42, a blowout arm 45 having a suction plate 44 which is operated by pneumatic portion at its tip end is formed to protrude in the direction of forming and cutting part 28, and the rodless cylinder 42 ) Is installed to be inclined downward toward the forming and cutting part 28 to facilitate taking out of the completed inner shield 10.

Looking at the working relationship of the present invention as described above;

The tip portion of the parent material 21 on the roll feeder 38 is taken out and supplied to the piercing part 25 of the inner shield manufacturing apparatus 20 to operate the inner shield manufacturing apparatus 20.

Then, the parent material 21 continuously supplied while the upper mold 23 is continuously raised and lowered is provided with the piercing parts 25 and the primary bending parts 26 and 2 provided on the upper and lower molds 23 and 22. The inner shield 10 is completed by the car bending part 27 and the forming and cutting part 28.

The inner shield 10 completed by the forming and cutting part 28 is taken out to the outside of the inner shield manufacturing apparatus 20 by the takeout loader 40 installed on the outside of the forming and cutting part 28.

When the parent material 21 is supplied to the upper and lower molds 23 and 22, the parent material 21 is moved to the outer shape of the inner shield 10 by the piercing part 25 by the lowering of the upper mold 23. Piercing is completed at the same time as blanking.

At this time, after the inner shield 10 is completed to enable continuous connection transfer, unnecessary scrap a and b portions are cut and beads 31 are formed at the scrap c portions and positioning is performed at the center of the beads 31. Positioning hole 32 for the purpose is formed integrally.

When the upper mold 23 rises in the above state, the parent material 21 positioned on the piercing part 25 by the roll feeder 38 is moved to the primary bending part 26, and the moved parent material (21) is able to accurately position the positioning hole 32 formed on the beads 31 by being coupled to the positioning pin 30 of the lower mold (22).

When the transfer of the mother material 21 is completed as described above, the upper mold 23 is lowered again, and the parent material passed through the piercing part 25 in the primary bending part 26 by the lowered upper mold 23. (21) is temporarily shaped by taking the shape of the inner shield (10).

At the same time, the mother material 21 supplied to the piercing part 25 is subjected to the same operation as the piercing part 25 described above.

When the upper mold 23 rises again, the parent material 21 is transferred by the roll feeder 38, and the parent material 21 at the uppermost end is transferred to the secondary bending part 27 to position the pin 30. ) And the positioning material 32 determines the exact position, and the rear base material is located in the primary bending part 26 and the piercing part 25, and the secondary bending and the 1 as the lowering of the upper mold 23. Car banding and piercing is made and the upper mold 23 is raised.

When the upper mold 23 rises, the parent material 21 is transferred by the roll feeder 38 so that the forming and cutting part 28, the secondary bending part 27, the primary bending part 26 and the piercing part ( 25, the parent material 21 positioned at the top by the lowering of the upper mold 23 is formed into a complete inner shield 10 and at the same time the scrap c portion in which the beads 31 are formed is cut and The parent material 21 is to be made of secondary banding and primary banding and piercing sequentially.

In this state, when the upper mold 23 rises, the takeout loader 40 takes out the completed inner shield 10 on the forming and cutting part 28 and discharges it to the outside of the inner shield takeout device 20, and the parent material 21 is again transferred by the roll feeder 38 by one part to repeat the operation described above.

Looking at the operation of taking out the inner shield 10, the take-out loader 40 is completed;

In the initial state, the rodless cylinder 42 of the take-out loader 40 is located at the rear of the guide bar 43, and the rodless cylinder 42 is guide bar 43 at the same time the upper mold 23 is raised. Move forward).

Then, the inner shield 10 in which the blowout arm 45 fixed to the lower end of the rodless cylinder 42 is positioned on the forming and cutting part 28 and the sucker 44 provided at the tip of the blowout arm 45 is completed. Adsorption in contact with).

At the same time, when the rodless cylinder 42 retreats, the completed inner shield 10 loses the suction force of the suction plate 44 in a state located outside the inner shield manufacturing apparatus 20, so that the inner shield 10 naturally produces the inner shield. It is discharged out of the device 20.

As described above, the present invention enables continuous manufacture of the inner shield 10 by sequentially supplying the parent material to one device through the piercing, the first and second bending and the forming and cutting parts.

In particular, by having a single device and completing it in one process, not only can the initial installation cost be reduced, but also the material can be saved, the supply of the parent material, and the discharge of the completed inner shield can be performed by one person. Because of this, it is possible to expect to save a lot of manpower.

As described above, the present invention facilitates the production of the inner shield, thereby improving productivity, reducing materials, and reducing workforce.

Claims (3)

Inside the panel 12 and the funnel 13 of the CRT 11 is interposed behind the frame 15 supporting the shadow mask 14, which is a reticulated thin plate, to prevent oxidation and to absorb heat during the manufacturing process of the CRT. In order to prevent the reflection of the electron beam and to prevent the geomagnetic effects of the electron beam emitted from the electron gun, the inner shield 10, which is wound in the roll type, is continuously supplied with piercing and the primary material. In constructing the inner shield manufacturing apparatus 20 to be completed in the bending, secondary bending and forming and cutting, the inner shield 10 is completed; The inner shield manufacturing apparatus 20 is composed of a lower mold 22 installed on the upper surface of the base 20 'and an upper mold 23 positioned on the upper side of the lower mold 22 to move up and down; The upper and lower molds (23, 22) are arranged in sequential piercing part 25, the primary bending part 26, the secondary bending part 27 and the forming and cutting part (28); A positioning pin (30) for precise positioning of the parent material (21) supplied on the primary bending part (26) and the secondary bending part (27) of the lower mold (22); The piercing part 25 has a bead 31 forming portion and positioning pin 30 for improving the mobility of the parent material 21 continuously supplied in addition to the means for making the shape of the mother material 21 to be supplied. A positioning hole 32 forming portion that can be coupled; The forming and cutting part 28 includes forming means for completely molding the inner shield 10 that is temporarily molded by secondary bending and cutting means for cutting the beads 31; At the rear and front of the inner shield manufacturing apparatus 20, a roll feeder 38 wound around the parent material 21 and a molded inner shield 10 are formed to enable continuous supply of the base material 21 of sheet metal. Inner shield manufacturing apparatus for a brown tube characterized by including a take-out loader 40 for taking out. The method of claim 1, The take-out loader 40 is a guide bar for guiding the movement of the rodless cylinder 42 and the rodless cylinder 42 fixed on the frame 41 erected at both front sides of the inner shield manufacturing apparatus 20 ( 43); The lower end of the rodless cylinder 42, the inner shield manufacturing apparatus for a CRT, characterized in that the take-out arm 45 having a sucker 44 to facilitate the take-out of the completed inner shield 10 is further provided. . The method of claim 2; The rodless cylinder (42) is an inner shield manufacturing apparatus for a brown tube, characterized in that it is installed to be inclined downward in the forming and cutting part (28) direction.