KR20030038052A - Preventive apparatus for destroying of puncher knife - Google Patents

Abstract

PURPOSE: A breakage preventive apparatus of a knife of a boring machine is provided to increase the productivity and the recovery rate of the strip, and to reduce repair hour by preventing breakage of the knife or the strip by restricting the knife from being stuck to the hole of a strip. CONSTITUTION: A breakage preventive device is composed of a boring part having a die holder(10) installed in the lower part of a strip to support the strip, a knife(12) installed on the strip to perforate the strip, a knife holder(14) fixing the knife, an upper plate(16) mounting the knife holder, a cylinder(18) installed in the upper part of the upper plate to lift up and down the upper plate, and a housing mounting the cylinder; a looping preventive part having a lower plate(30) installed in the lower part of the upper plate in parallel, a sliding pin penetrated between the upper and lower plates and a spring installed around the sliding pin to assemble the upper plate with the lower plate elastically; and a roller part(40) installed in the lower part of the housing for rolling on the strip in moving. The breakage of the knife or the strip is prevented by restricting the knife from being stuck to the hole of the strip.

Description

Perforator Knife Breakage Prevention Device {PREVENTIVE APPARATUS FOR DESTROYING OF PUNCHER KNIFE}

The present invention relates to a perforator knife breakage prevention device installed in a welding facility of the pickling line, more specifically, a perforator knife breakage prevention device which prevents the knife from being damaged or the strip is damaged by the knife is fixed to the strip during the strip drilling It is about.

In general, the pickling line is a line for removing foreign matter attached to the surface of the strip to install a welding facility to weld the coil, so that the strip is continuously charged and pickled.

Welding equipment installed in such a pickling line in general, as shown in FIG. 1, the mobile welding table 100 to which the preceding strip S1 is fixed, the fixed welding table 102 to which the following strip S2 is fixed, and Cutter 104 which cuts the tail portion of the leading strip S1 and the top portion of the trailing strip S2 for easy welding, and a welder for welding the top portion of the tail portion and the trailing strip S2 of the preceding strip S1 ( 106).

In addition, the welding facility includes a perforator 108 for drilling a hole in the trailing strip S2 in order to detect a weld of the strips S1 and S2, a detector 110 installed to detect the hole, and a detector 110. It further includes a welding inspector 112 is installed to inspect the weld where the weld is located when the hole is detected by.

Here, the punching machine 108 for drilling holes in the strip S2 is installed at the lower end of the strip S2 as shown in FIG. 2 to support the strip S2 and the die of the strip S2. A knife 122 installed above the hold 120 to drill a hole in the strip S2, a knife holder 124 holding the knife 122, and a cylinder 126 for lifting the knife holder 124 up and down. )

In addition, the roller 128 is installed in front and rear of the knife 124 so that the hole and the knife 124 are easily separated when the knife 124 is separated from the hole after the strip S2 is drilled.

However, if the thickness of the strip is thin, a loop is generated in the strip as the knife drills the strip so that when the knife is raised, the perforated surface of the strip is attached to the edge of the knife and rises together.

At this time, if the knife is not separated from the strip and proceeds with the strip, the knife is subjected to shearing force as the strip proceeds and is broken.

In addition, even if the shear strength of the knife is so large that the knife is not broken, the perforated portion of the strip is torn or scratched by the knife.

Therefore, if the knife is broken or the strip is torn off, it takes maintenance time to repair it, thus reducing productivity.

In addition, since the knife is broken and must be replaced, the torn strip has to be scrapped, thereby increasing the cost.

Therefore, the present invention has been made to solve the problems of the prior art, the object of the present invention is to provide a perforator knife breakage prevention device that prevents the knife from being stuck to the hole of the strip when punching the strip.

1 is a view schematically showing a general welding equipment.

Figure 2 is a perspective view schematically showing a perforator knife damage prevention device according to the present invention.

Figure 3 is a perspective view showing a perforated part and a roofing prevention part of the perforator knife damage prevention device according to the present invention.

Figure 4 is a part assembly view showing a perforated part and a roofing prevention part of the perforator knife damage prevention device according to the present invention.

Figure 5 is an assembly view showing the assembly state of the roller of the perforator knife damage prevention device according to the present invention.

Figure 6 is an operating state showing the operation of the perforator knife damage prevention device according to the present invention.

Figure 7 is a working state showing the time of puncture of the perforator knife damage prevention device according to the present invention.

8 is a working state diagram showing the knife return time of the punching machine knife damage prevention device according to the present invention.

9 is a working state diagram schematically showing the drilling operation of the drilling machine according to the prior art.

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

10: die holder 12: knife

14: knife holder 16: the upper plate

18: cylinder 20: housing

30: lower plate 32: sliding pin

34 housing 40 roller part

42: support plate 44: support shaft

60: detection sensor

In the strip perforator knife breakage prevention device of the present invention to achieve the object as described above in the perforator knife breakage prevention device for preventing the breakage of the perforator knife for drilling holes in the strip. A die holder installed at the lower part of the strip to support the strip, a knife installed at the top of the strip corresponding to the upper part of the die holder to drill the strip, a knife holder to which the knife is fixed, and an upper plate to which the knife holder is fixed, and an upper part A perforated part formed at a top of the plate and configured to include a cylinder for raising and lowering the upper plate and a housing in which the cylinder is installed; A roofing prevention portion formed of a lower plate installed below the upper plate so as to be parallel to the upper plate, a sliding pin installed to penetrate between the upper plate and the lower plate, and a spring installed on an outer circumferential surface of the sliding pin to elastically couple the upper plate and the lower plate; It is installed on both sides of the upper plate in the lower portion of the housing and comprises a roller portion that is rubbed on the upper portion of the strip during the progress of the strip.

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

1 is a view schematically showing a general welding equipment, Figure 2 is a perspective view schematically showing a perforator knife damage prevention device according to the present invention, Figure 3 is a perforation and roofing prevention of the perforator knife damage prevention device according to the present invention 4 is a perspective view illustrating parts, and FIG. 4 is a parts assembly view illustrating a perforation part and a roofing prevention part of a perforator knife breakage prevention device according to the present invention.

Perforator knife breakage prevention device according to an embodiment of the present invention is made of a perforated portion for drilling holes in the strip, a looping prevention portion to prevent the looping phenomenon of the strip, and a roller to facilitate the movement of the strip during the progress of the strip. .

First, the perforation part is installed at the lower part of the strip S2 to support the strip S2, and is installed at the top of the strip S2 corresponding to the upper part of the die holder 10 to perforate the strip S2. The knife 12, the knife holder 14 is fixed to the knife 12, the top plate 16 is fixed to the knife holder 14 is installed, the top plate 16 is installed on the top plate 16 It consists of a cylinder 18 for elevating and lowering the housing, the cylinder 18 is installed.

The die holder 10 is installed below the strip S2, and a die hole 11 into which the knife 12 penetrating the strip S2 is inserted is formed at the center thereof.

Here, the die hole 11 is preferably opened in the lower portion so that the scrap of the perforated strip (S2) can be discharged.

In addition, the diameter of the die hole 11 should be at least larger than the diameter of the knife 12 so that the knife 12 does not get caught in the die hole 11 after drilling the strip.

The knife 12 is fixed to the knife holder 14 with a bolt 13 so that replacement is possible.

The knife 12 drills a hole in the strip S2 while descending, raises the hole after drilling, and returns to the standby position.

Knife holder 14 is fixed to the lower portion of the upper plate 16 with a bolt 15, the knife 14 is inserted into the lower portion is fixed by the set screw 17 of the side.

The upper plate 16 is fixed to the front end of the cylinder rod 19 of the cylinder 18 upwards, and the knife holder 14 is fixed to the lower center.

In addition, holes 16a into which the sliding pins 32 to be described later are inserted are formed at each corner of the upper plate 16.

On the other hand, the upper plate 16, the knife 12 is raised and lowered in accordance with the expansion and contraction of the cylinder 18 installed on the upper plate 16 to puncture the strip (S2) or return the knife (S2).

In addition, the upper portion of the cylinder 18, the housing 20 is fixed to the cylinder 18 is installed, the roller portion 40 is installed on both sides of the housing 20, the roller 46 during the strip (S2) progression Cloud friction with the strip (S2) so that the strip (S2) is moved smoothly.

The perforation of the strip (S2) by the perforation as described above is the upper plate 16 and the knife holder 14 fixed fixed thereto as the cylinder 18 is extended, the knife as the knife holder 14 is lowered The knife 12 fixed to the holder 14 is lowered to drill a hole in the strip S2.

Next, the roofing prevention part is provided with a lower plate 30 disposed below the upper plate 16 so as to be parallel to the upper plate 16, a sliding pin 32 installed to penetrate the upper plate 16 and the lower plate 30, and sliding. Installed on the outer circumferential surface of the pin 32 is composed of a spring 34 to elastically couple the upper plate 16 and the lower plate 30.

The lower plate 30 is installed at the lower portion of the upper plate 16 so as to be parallel to the upper plate 16, and a hole 30a into which the sliding pin 32 is inserted is formed at each corner, and the knife 12 at the center thereof. An opening 31 through which is penetrated is formed.

The sliding pin 32 is installed to pass through the holes 16a and 30a formed in the upper plate 16 and the lower plate 30, and a spring 34 is installed on the outer circumferential surface thereof.

The sliding pin 32 has a flange 32a having a diameter larger than that of the hole 16a of the upper plate 16 at the top, so that the upper plate 16a is not separated out through the upper end of the sliding pin 32. Do not.

In addition, a screw hole 32b is formed in the lower portion of the sliding pin 32, and a bolt 33 having a larger head diameter than the hole 30a of the lower plate 30 is engaged with the screw hole 32b.

Therefore, even if the elastic force of the spring 34 acts on the lower plate 30 does not escape to the lower portion of the sliding pin (32).

The spring 34 is installed on the outer circumferential surface of the sliding pin 32 to allow the upper plate 16 and the lower plate 30 to be elastically coupled.

Therefore, when the lower plate 30 corresponds to the upper surface of the strip S2, the lower plate 30 is in close contact with the strip S2 by the elastic force of the spring 34.

Next, as shown in FIG. 5, the roller 40 is installed at both sides of the upper plate 16 at the lower portion of the housing 20 to press the upper portion of the strip S2 when the strip S2 proceeds. S2) and cloud friction.

The roller portion 40 is located at both sides with respect to the upper plate 16, the support plate 42 is extended and fixed to the lower portion from the housing 20, and the roller shaft axially supported by the support plate 42 ( 44, the roller 46 provided in the roller shaft 44 between the support plate 42, the bolt 48 which engages with the acidic acid formed in the both sides of the roller shaft 44, the support plate 42, and the roller. It is formed between the shaft 44 is made of a bearing 50 to allow the roller shaft 44 to move smoothly.

Since the roller portion 40 rotates by contacting the outer circumferential surface of the roller 46 and the upper surface of the strip S2 when the roller portion 40 comes into contact with the strip S2, the scratching does not occur on the surface of the strip S2. Do not.

On the other hand, the rear end of the perforator is provided with a detection sensor 60 for detecting a hole drilled in the strip (S2).

Such operation of the puncture knife damage prevention device according to the present invention is as follows.

6 is an operational state diagram showing the operation of the puncture knife damage prevention device according to the present invention, Figure 7 is a working state diagram showing the time of puncture of the puncture knife damage prevention device according to the present invention, Figure 8 is a punch knife according to the present invention It is a working state diagram which shows the knife return of a damage prevention apparatus.

When welding of the tail portion of the preceding strip S1 and the top portion of the trailing strip S2 is completed, the cylinder 18 is extended so that the upper plate 16 and the knife holder 14 fixed to the cylinder rod 19 are lowered. Since the knife holder 14 descends, the knife 12 fixed to the knife holder 14 by the set screw 17 also descends.

In addition, the sliding pin 32 installed to penetrate the hole 16a of the upper plate 16 and the lower plate 30 elastically installed on the upper plate 16 are also lowered.

During the lowering, the lower plate 30 first corresponds to the top surface of the strip S2.

Even if the lower plate 30 corresponds to the upper surface of the strip S2, the cylinder 18 is continuously extended, so the lower plate 30 stops by pressing the upper surface of the strip S2, and the upper plate 16 slides. Continue to descend along (32).

At this time, since the spring 34 is compressed between the upper plate 16 and the lower plate 30, the compressive force of the spring 34 is transmitted to the lower plate 30, and the compressive force transmitted to the lower plate 30 is applied to the strip S2. Pressurized.

As described above, the knife holder 14 and the knife 12 continue to descend in the state in which the strip S2 is compressed to drill holes in the surface of the strip S2.

At this time, the lower plate 30 presses around the hole, thereby preventing a part of the strip 32 from being drawn into the hole along the edge of the knife 12.

Next, when the drilling of the hole is completed, the knife 18 is raised by reducing the cylinder 18 as opposed to the time of drilling.

At this time, since the lower plate 30 presses the periphery of the hole, the strip S2 and the knife 12 are easily separated even if the edge portion and the hole surface of the knife 12 are fixed.

After the strip S2 and the knife 12 are separated, the knife 12 is continuously raised to return to the standby position.

When the knife 12 returns, the strip S2 advances, and when the strip 12 advances and a hole is detected by the detection sensor 60, the welded portion of the strip S2 is positioned at the weld inspection unit.

If it is determined that the weld is not abnormal after the weld inspection, the strip S2 enters the pickling line.

As described above, the perforator knife breakage preventing device according to the present invention prevents the knife from being stuck to the strip so that the knife is not broken or torn off the strip, thereby reducing the maintenance time generated thereby improving productivity.

It also prevents knife cuts and tearing of the strips, which reduces knife consumption and increases strip recovery, resulting in cost savings.

Claims (1)

A perforator knife breakage preventing device for preventing breakage of a perforator knife for drilling a hole in a strip. A die holder installed at a lower portion of the strip to support the strip, a knife installed at an upper portion of the strip corresponding to an upper portion of the die holder to drill the strip, a knife holder fixed to the knife, and a fixed fixed knife holder A perforated part formed of an upper plate, a cylinder installed at an upper portion of the upper plate to move the upper plate up and down, and a housing in which the cylinder is installed; A lower plate installed below the upper plate so as to be parallel to the upper plate, a sliding pin installed to penetrate between the upper plate and the lower plate, and a spring installed on an outer circumferential surface of the sliding pin to elastically couple the upper plate and the lower plate to each other. Roofing prevention portion consisting of; Perforated knife breakage prevention device, characterized in that formed on both sides of the upper plate in the lower portion of the housing consisting of a roller portion that is rubbed on the upper portion of the strip during the progress of the strip.