JP2013141713A - Machining method of thomson blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a levelling time by eliminating the distortion of a Thomson punching die with respect to a horizontal surface caused by the machining distortion of a Thomson blade and insertion distortion into a machining shape groove to improve seating on the horizontal surface.SOLUTION: A Thomson blade is constituted in such a manner that, at a predetermined position of the angle bending or arc bending of the Thomson blade, one or a plurality of slits 1, oblong holes 2, or holes 3 are formed at a body 53 to facilitate levelling, continuous slits 1, the oblong holes 2, or the holes 3 are arranged in the Thomson blade 5 at the upper part, the lower part, or the intermediate part of a body 53 of the Thomson blade to facilitate the levelling.

Description

The present invention relates to a method for processing a Thomson blade.

When punching with a Thomson punching die, the horizontal surface of the Thomson blade is difficult to come out and unevenness is required, and shortening of the work is required.

Japanese Patent Laid-Open No. 05-21699 JP-A-10-58041

The purpose is to make a Thomson blade that is easy to produce a horizontal surface, has little unevenness removal time, is less likely to produce paper dust, and has a long service life.

A Thomson blade characterized in that one or a plurality of slits 1, a long hole 2 or a hole 3 is provided in a main body 53 at a predetermined position for angle bending and arc bending of the Thomson blade to facilitate unevenness removal.

A Thomson blade characterized in that a slit 1, a long hole 2 or a hole 3 continuous to the Thomson blade 5 is provided in an upper portion, a lower portion or an intermediate portion of the Thomson blade main body 53 to facilitate unevenness removal.

A Thomson blade characterized in that a continuous uneven groove 4 is provided on a blade bottom 52 of the Thomson blade 5 to facilitate unevenness removal.

Even if it is a hard and rigid Thomson blade, after creating a Thomson die, the Thomson blade can be easily adapted to the horizontal surface, maintain the horizontal surface, reduce unevenness time, and make a Thomson blade that is less likely to be dusty. Become.

Configuration of Thomson blade for angle bending between straight lines of the present invention (a) One having slits at straight angle and straight angle bending positions (b) One having elongated holes at straight angle and straight angle bending positions (c) There is a hole at the angle bend position of the straight line Configuration of the Thomson blade between the arc and the straight line of the present invention (a) A slit between the straight line and the arc (b) A slot between the straight line and the arc (c) A hole between the straight line and the arc There are Continuously processed Thomson blade of the present invention (a) Thomson blade with continuous slits (b) Thomson blade with continuous long holes (c) Thomson blade with continuous holes near the bottom (D) Thomson blade with a continuous hole at the bottom of the blade edge (e) Thomson blade with a plurality of holes continuously (f) Thomson blade with a continuous groove on the bottom Cause of cutting unevenness (a) Floating machine surface plate (b) Bending corner bottom protrusion (c) Thomson blade curved Configuration of Thomson die (a) Thomson die (b) Shaped groove and base plate (c) Bridge machining drawing (d) Punched sectional view (e) Blade crush (f) Basic configuration of Thomson blade

FIG. 6 shows a Thomson blade 5. It consists of a blade edge 51, a blade bottom 52 and a main body 53.

FIG. 5 shows the configuration of a conventional Thomson die. As shown in (b), a machining shape groove 13 corresponding to the blade width is engraved in the base plate 12 with a laser-machining machine or the like in advance, and the Thomson blade 5 is formed into a linear or arc element of the machining shape with a machining jig. Bending is carried out and implanted into the processed shape groove 13 to form a Thomson die.

When the inner and outer sides of the base plate 12 are separated from each other by the machining shape groove 13 as shown in (b), a connecting portion 14 that is not separated is made and the inner and outer portions are kept connected. The cutting edge 51 needs a bridge 15 that is continuous and escapes only at the bottom.

FIG. 4 is a diagram showing the cause of cut unevenness. When the Thomson blade 5 is bent, one side is always lifted 6 as shown in (a), and the projection 52 is formed on the bottom 52 of the angle-bending Thomson blade 5 due to elongation as shown in (b). There is always a difference between the bending shape by the jig and the machining shape groove 13, and distortion occurs when it is forcibly implanted. Since the bridge 15 has a large width, the upper blade edge 51 becomes weak and bends without being able to withstand the punching pressure, and it becomes a place where it is necessary to adjust the punching unevenness, and the Thomson blade itself is bent as shown in FIG. And the problem of the floating 6, the protrusion 9 of the blade bottom 52, and the curvature 8 are entangled, and the horizontal plane in FIG.

(D) of FIG. 5 shows a sectional view of punching, and the machine moves so as to sandwich the upper surface plate 20 and the lower surface plate 10 with the machine, and the shim 16 and the back plate 17 are formed on the blade bottom 52 of the Thomson blade 5 therebetween. The cutting edge 51 has a face plate 18, and the processed paper 19 is placed between the Thomson blade 5 and the face plate 7, and the back plate 17 is for attaching the shim 16 and preventing scratches on the upper surface plate 20. 18 is made of steel and has a high hardness because it hits the cutting edge 51 of the Thomson blade 5. When the Thomson blade 5 slightly touches the face plate 16, the shim 16 is cut evenly to cut the paper 19 evenly. It is necessary to remove the unevenness that spreads under the floor before the use of Thomson Die Figure 5 (a). During that time, the expensive machine remains stopped and a loss time of about 2 hours occurs. It is desired to shorten this.

In order to remove the unevenness, the cutting edge 51 of the Thomson blade 5 is lowered toward the steel face plate 18, and the shim 16 is laid under the Thomson blade 5 where the paper 19 is poorly cut. Repeatedly, the horizontal plane is gradually raised. Finally, the Thomson blade 5 is pressed against the hard face plate 18 to remove the twist, and a part of the blade edge 51 is forcibly pushed into the face plate 18 to crush the blade edge 51 to obtain a horizontal plane. Therefore, the crushed blade 11 is inevitably formed, and when the paper 19 is pulled out, cutting with the crushed blade 11 produces a fine string-like paper powder, which affects the life of the Thomson die.

The Thomson blade 5 has a rigidity that is high enough to cut the paper 13, and the Thomson blade 5 only needs to be adjusted to the horizontal level with a slight punching pressure that does not leave scratches on the blade edge 51 when removing unevenness. If the rigidity is reduced, the rigidity is reduced, the element is divided, or the elasticity is given, and it is easy to get used to the horizontal, and if the force is applied to the extent that the cutting edge 51 is damaged, the cutting edge 51 is less damaged. .

FIG. 1 shows the configuration of a Thomson blade with an angle bend between straight lines.
(A) has a slit 1 of 3 mm or less between straight lines. Since the slit width is narrow and long, unlike the bridge, it can withstand the pressure from above and the cutting edge 51 is continuous, but each element is The slits 1 are opened and closed during the unevenness removal operation, and the distortion is corrected and the protrusions 9 are not bent.

 (b) has a long hole 2 between the straight lines, and since the long hole width is narrow and long, it can withstand the pressure from the top, the cutting edge 51 is continuous, but each element opens or closes a long hole. Then, the lift 6 is corrected by unevenness removal, the protrusion 9 can be absorbed, the blade bottom 53 is connected and smooth, so the back plate 17 and the shim 16 are not easily damaged, and the blade bottom 52 does not open during bending, so that the shape processing groove Implanting in 13 is easier than in (a).

 (c) has a hole 3 between the straight lines, can withstand the extraction pressure from above, the blade edge is continuous, but the degree of freedom between each element increases, the lift 6 is corrected by unevenness removal, and the protrusion 9 Since the blade bottom 52 is connected and smooth, the back plate 17 and the shim 16 are not easily damaged, the blade bottom 52 does not open during bending, and it is easy to plant in the shape processing groove 13, and the number and position of the holes are changed. The elasticity can be adjusted.

FIG. 2 shows the configuration of a Thomson blade between an arc and a straight line.
(A) has a slit 1 with a width of 3 mm or less between an arc and a straight line. Since the slit width is narrow and long, unlike a bridge, it can withstand the extraction pressure from above and the cutting edge 51 is continuous, but each element Is in a divided state, the lift 6 is opened and closed when the unevenness is removed, the distortion is corrected, and the protrusion 9 during bending is less likely to occur.

 (b) has a long hole 2 between an arc and a straight line. Since the width is narrow and long, it can withstand the pressure from above and the cutting edge is continuous. 2 opens and closes, the distortion is corrected, the protrusion 9 can be absorbed, and the bottom 52 is connected and smooth, so that the back plate 17 and the shim 16 are not easily damaged, and the bottom 52 does not open during bending. Compared to (a), the processing can be performed accurately and can be implanted in the shape processing groove 13.

 (c) has a hole 3 between a circular arc and a straight line, can withstand the extraction pressure from above, the cutting edge 51 is continuous, but the degree of freedom between elements increases, and the lift 6 is corrected by unevenness removal, and the protrusion 9 The bottom plate 17 and the shim 16 are not easily damaged because they are connected and smooth at the bottom, the blade bottom 52 does not open at the time of bending, the bending can be performed accurately, and it can be implanted in the shape processing groove 13 as compared with (a). The elasticity can be adjusted by changing the number and position of the holes.

FIG. 3 shows a configuration of a continuously processed Thomson blade.
(A) is a continuous Thomson blade 5 in which slits 1 having a width of 3 mm or less are continuously formed from the bottom of the blade edge 51 to the blade bottom 52, and the slit width is narrow and long. Withstands the punching pressure, the cutting edge 51 is continuous, but each element is in a divided state, the flexibility is also increased, and the lift 6 and the curvature 8 are corrected by opening and closing the slits when removing unevenness.

 (b) is a continuous Thomson blade 5 in which the long hole 2 is continuously knitted from the bottom of the blade tip 51 to the front of the blade bottom 52. Since the width is narrow and long, the blade tip can withstand the punching pressure from above. Although each element is continuous, each of the elements has increased flexibility, and the lift 6 and the curvature 8 are easily corrected by opening and closing the long hole 2 during unevenness removal work, and the bottom 52 is connected and smooth so that the back plate 17 and The shim 16 is not easily damaged, and the blade bottom 52 does not open at the time of bending, so that it can be easily implanted as compared with the case (a).

(C) is an arrangement in which a long hole 2 or a hole 3 is inserted in the upper part of the bottom 52 of the continuous Thomson blade 5 and mainly absorbs the protrusion 9, increases its flexibility, rises 6, and curves 8 are also removed during unevenness removal work. It is easy to correct, and since the bottom 52 is connected and smooth, the back plate 17 and the shim 16 are not easily damaged, the bottom 52 is not opened at the time of bending, and the bending can be performed accurately. Easier than that.

(D) is one in which the long hole 2 or the hole 3 is inserted in the lower part of the cutting edge 51 of the Thomson blade 5, and the cutting edge is mainly flexible.

 (e) has a plurality of the long holes 2 or the holes 3 in the main body 53 of the Thomson blade 5. Even if the blade hardness is hard, it can be made to have any elasticity by adjusting the number and positions of the holes 3. Although the cutting edge is continuous, the degree of freedom between the elements is increased, the lift 6 and the curve 8 are also easily corrected during unevenness removal work, and since the connection is smooth with the cutting edge 51, the back plate 17 and the shim 16 are not easily damaged and are implanted in the shape processing groove 13 Compared to (a), the blade bottom 52 does not open, which is easy.

(F) is obtained by inserting a groove 4 having an unevenness in the blade bottom 52 continuously, and can absorb the protrusion 9, the curve 8, and the protrusion 6.

DESCRIPTION OF SYMBOLS 1 Slit 2 Long hole 3 Hole 4 Sewing groove 5 Thomson blade 51 Cutting edge 52 Blade bottom 53 Main body 6 Lifting 7 Face plate 8 Curved 9 Projection 10 Lower surface plate 11 Blade crush 12 Base plate
13 Shape processing groove 14 Linking portion 15 Bridge 16 Shim 17 Back plate 18 Face plate 19 Paper 20 Upper surface plate

Claims (3)

A Thomson blade characterized in that one or a plurality of slits 1, a long hole 2 or a hole 3 is provided in a main body 53 at a predetermined position for angle bending and arc bending of the Thomson blade to facilitate unevenness removal. A Thomson blade characterized in that a slit 1, a long hole 2 or a hole 3 continuous to the Thomson blade 5 is provided in an upper portion, a lower portion or an intermediate portion of the Thomson blade main body 53 to facilitate unevenness removal. A Thomson blade characterized in that a continuous uneven groove 4 is provided on a blade bottom 52 of the Thomson blade 5 to facilitate unevenness removal.

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