KR960001211Y1 - Press dies making for inner shield of tv - Google Patents

Abstract

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Description

Press mold for TV inner shield production

1 is an overall perspective view of the present invention

2 is a perspective view of an inner shield of a television manufactured from a mold of the present invention.

3 is a lower perspective view of the present invention

4 is a perspective view of the prize-type bottom of the present invention

5 is a cross-sectional view of the main portion of the upper and lower molds of the present invention combined

6 is a cross-sectional view of the main portion of the upper and lower molds of the present invention separated

7 is a perspective view of the punch for bending the present invention

Fig. 8 (a) is a plan view of piercing and trimming dice

(b) is a side view of (a)

9 (a) is a plan view of a piercing and trimming punch

(b) is a side view of a partially fractured state of (a)

* Explanation of symbols for main parts of the drawings

4: draw punch 5: piercing and trim dice

8, 27: iron plate support 9: material cutting blade

10: strip bar 11: lower mold

17: Draw Dice 18: Piercing and Trimming Punch

21: prize mold 24: material cutting hole

The present invention relates to a press mold for manufacturing an inner shield of a television, which is assembled to a holder coupled to the back of the CRT of a television, and shields the magnetic field so as not to affect the screen due to a magnetic field when a magnetic force is formed by a magnet. Specifically, the drawing, bending, piercing, and trimming processes for manufacturing an inner shield are completed in one mold to be automated.

In the conventional case, a process for forming an inner shield of a television in a press die, the first prior art was a drawing (DRAWING) → a piercing (SIDE PIERClNG) → a trimming three-step process, after which (DRAWING) → Inner SHIELD can be manufactured only after the multi-step process of trimming and piercing. Therefore, press and mold must be provided for each process. Inefficiency and unnecessary workforce in purchasing and manufacturing molds have the disadvantage of incurring the loss of technical manpower and waste of energy (power).

Therefore, the present invention solves the above-mentioned problems and the process of drawing, piercing, trimming, etc. is performed at the same time in a single mold to produce the finished inner shield (INNER SHIELD). A detailed description with reference to the drawings is as follows.

The lower support plate (3) and the lower fixing plate (6) formed with the strip bar guide rod (7) are sequentially coupled to the lower plate (2) where the guide rods (1) are formed at four corners, and the fixing plate (6) has a draw punch ( 4) is combined with the piercing and trimming dice (5) is coupled to the strip bar guide rod (7) is a strip bar (10) formed with the iron plate support (8) and material cutting blade (9) on one side is inserted into the lower mold ( 11), a rectangular hole 12 and a through hole 13 were drilled in the center portion and the slope of the lower die 11 to discharge the scrap after trimming and piercing work, and a through hole 13 formed in the piercing and trimming die 5. Eject pin 14 for product separation is coalesced with spring on both sides.

The upper plate 16 formed with the guide bush 15 coupled to the guide rods 1 at four corners is sequentially connected to the upper support plate 19 and the reinforcement plate 20, and the drawing die 17 and the piercing and trimming punches ( 18 is combined to form an upper mold 21, the exhaust die 22 and the air injection hole 23 is drilled in the draw die 17 and the one side wall and the bottom surface combined with the top plate 16 and air The injection hole 23 is coupled to the air nib (25) to inject air to separate the product, and on one side of the piercing and trimming punch (18) iron plate support (27) and spring rise prevention pin ( 26) and a material cutting hole 24 are formed to combine the upper and lower molds 21 and 11 so that the inner shield of the television is manufactured in a mold.

In the drawings, reference numeral 28 is an iron plate, 29 is an inner shield of a television, 30 is a spring, 31 is a piercing hole for drilling a hole, and 32 is a hole for drilling a hole. Piercing bracket for 33, the outer trimming.

Looking at the effect of the present invention configured as described above are as follows.

As is well known, if the upper and lower molds 21 and 11 are firmly installed in the press with a clamp, and then power is transmitted, the upper mold 21 is guided to the guide bush 15 when the crankshaft rises to guide rods ( 1) and the strip bar 10 is wound in a bundle in a state where the strip bar 10 is raised and positioned along the strip bar guide rod 7 along the strip bar guide rod 7 by a known die cushion installed in the press. The crank shaft is placed on the upper surface of the iron plate support (8) and the strip bar (10) while the supplied iron plate is supplied between the piercing and trimming punch (18) of the upper and lower molds (21) (11) and the strip bar (10). While lowering the upper die (21) is lowered along the guide rod (1) of the lower die (11) while pressing the inflated iron plate with the product rising prevention pin (26) while supporting the steel plate support (8) (27) and Simultaneous cutting of the material cutting blade (9) and material cutting hole (24) and strip bar (10) strip bar guide rod (7) The draw die 17 is engaged with the draw punch 4 protruding while descending to bend and bent so as to have an inner shield shape and shape, and drawn into an inner shield shape and shape. The steel plate is gradually lowered by the upper die 21, and the center hole and the small hole in the slope are drilled by the piercing and piercing brackets of the trimming punch 18, and the scrap produced by drilling the hole is the rectangle of the lower die 11 Falling through the hole 12 and the through hole 13, the eject pin 14 is pressed by the draw die 17, the spring is compressed and the elastic force to raise the iron plate is pressed to actuate the upper die (21) when lifting The inner shield is easily separated from the drawing punch 4 of the lower die 11, and the outer edge of the inner shield is the piercing and trimming punch 18 of the piercing and trimming punch 18, and the piercing and trimming dies. The inner shield (INNER SHIELD) is molded in one mold by being cut by the engagement of (5), and after the molding is completed, the upper die 21 is lifted and the air nipple 25 is coupled to the upper mold 21 according to the rotation of the crankshaft. Blowing air into the injection hole 23 serves to separate and fall the inner shield injected into the drawing die 17, the eject pin 14, which was compressed by the spring also removes the external force while the drawing punch (4) The upper and lower molds 21 and 11 are separated from the upper and lower molds 21 and 11 by pushing the inner shield inserted into the exhaust hole, and the exhaust hole 22 is combined with the upper and lower molds 21 and 11. It will act as a natural exhaust of the air inside.

The above invention solves the problem of installing a separate mold production or press according to each process because the inner shield of the TV is manufactured by simultaneously drawing, piercing and trimming in a single mold. It is a very practical design to save energy.

Claims (1)

(Fixing) Piercing and trimming dice 5 in which the fixed plate 6 and the lower support plate 3 are coupled to the lower plate 2 on which the ordinary guide rod is formed, and the drawing punch 4 is coupled to the fixed plate 6. The strip bar guide rod 7 of the fixed plate 6 is formed with a strip bar 10 having an iron plate support 8 and a material cutting edge 9 inserted therein to form a lower die 11, but with a rectangular hole 12. ) And the through hole 13 are drilled and eject pins 14 are installed on both sides of the through hole 13, and the upper plate 16 on which the guide bush is formed is an upper support plate 19 and a reinforcement plate 20, and piercing and trimming. The punch 18 is sequentially coupled, but at the center thereof, a draw die 17 in which an exhaust hole and an air injection hole are processed is formed, and an iron plate support 27 and a material cutting hole 24 are formed at one side of the piercing and trimming punch l8. And the upper mold 21 in which the product rising prevention pin 26 is installed is combined with the lower mold 11 for drawing, piercing, Reaming an inner shield (INNER SHIELD) for producing a press mold of the television, characterized in that the work ever.