JP2002239996A - Improved face plate structure of molded sheet blanking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a face plate structure of a blanking device for molded sheet capable of removing the unevenness in the coating and allowing the face plate and a blanking edge to be serviceable for a long time by applying coating of hard resin to the outer surface and/or inner surface of the face plate of the rotary type blanking device. SOLUTION: The rotary type blanking device for molded sheet is equipped with a rotor 81 furnished at the periphery with a cutting edge die 84 and a projection 85 for formation of ruled lines and an anvil 82 located confronting the rotor 81, and the projection 85 forms ruled lines for folding-in while corrugated cardboard or pasteboard C as molded sheet is allowed to pass between the rotor 81 and anvil 82 and blanks out the specified part of the corrugated cardboard or the pasteboard C, wherein a coating part 83 made of hard resin having an appropriate thickness is stuck fast to the outer surface and/or inner surface of the face plate A of the anvil 82 and the rotor 81.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved face plate structure in a punching apparatus for corrugated cardboard or board, which is a molded sheet used in an assembling box or the like, and more particularly, to an improved structure for coating a face plate surface of a punching apparatus. The so-called unevenness at the time of punching a molded sheet, that is, a state in which a part that should be punched out when a molded sheet is punched, remains without being punched, and the durability of the punching blade can be lengthened. The present invention relates to a finished face plate structure.

2. Description of the Related Art As shown in FIG. 3, a conventional so-called rotary type punching apparatus for a formed sheet basically includes a rotary body 71 having a blade die 2 'and a ruled line forming projection 3' on its outer periphery.
And an auxiliary rotator (anvil) 72 disposed opposite to the rotator 71. The rotating body 7
1. The auxiliary rotating body (anvil) 72 is a state in which a columnar-shaped one is horizontally arranged. A rotating body 71 having the blade mold 2 ′ and the ruled line forming projection 3 ′ and rotating, and an auxiliary rotating body (anvil) 72 rotating opposite to the rotating body 71.
While passing the corrugated cardboard or board C, which is a forming sheet, between the sheet and the corrugated cardboard or board C, which is the forming sheet, by forming a crease forming projection 3 ′, the forming sheet is formed while forming creases for folding. A predetermined portion of a certain cardboard or board C is punched. The formation of the folding ruled line is effective when assembling a corrugated cardboard or a board C which is a punched formed sheet. Reference numeral 73 in the drawing indicates a portion of a rotating shaft made of metal of the auxiliary rotating body (anvil) 72. The rotating body 71 and the auxiliary rotating body (anvil) 72 are
The present invention can also be implemented by disposing them opposite to the illustration. The auxiliary rotating body (anvil) 72 receives the blade 2 ′ of the rotating body 71 by a hard or hard rotating body made of metal or a soft or soft rotating body made of a material other than metal. can do. On the other hand, as shown in FIG. 4A, a conventional so-called flat molded sheet punching apparatus basically includes a corrugated cardboard or a board C, which is a molded sheet.
4. A thin rectangular parallelepiped punching blade 51 for punching
A thin rectangular parallelepiped ruled line forming projection 52 as shown in FIG.
The upper die substrate 50 (always fixed and cannot be raised or lowered) is disposed opposite to the upper die substrate 50, and a corrugated cardboard or plate ball C, which is a molded sheet, is placed thereon. And a lower die substrate 54 that is driven upward by a driving unit (not shown) toward the upper die substrate 50 side, and the lower die substrate 54 rises while contacting the punching blade 51 and the ruled line forming projection 52. A predetermined portion of the corrugated cardboard or board C, which is a molded sheet, is punched out while forming a folding line on the corrugated cardboard or board C, which is a molded sheet. The formation of the folding ruled line is effective when assembling a corrugated cardboard or a board C which is a punched formed sheet. Reference numeral 3a in FIG. 4B denotes a screw portion for disposing the ruled line forming protrusion 52 on the upper die substrate 50. Reference numeral 70 in the figure is a pull-out chase. The upper substrate 50 is fixedly arranged,
An upper substrate 50 is provided for holding the punching blade 51 and the ruled line forming projection 52 in a state of protruding downward.
The lower mold substrate 54 is mounted such that the lower mold substrate 54 is mounted on the base 53, and is driven by a driving unit (not shown) so as to move up or down to the upper mold substrate 50 side as indicated by an arrow in the drawing. Has become.

However, in the above-mentioned conventional so-called rotary type punching apparatus for forming a sheet, when punching a corrugated cardboard or a sheet ball C as a forming sheet, the auxiliary rotating body (anvil) 72 is required. The blade edge of the blade mold 2 'directly hits the face plate made of iron or stainless steel in a hard state while rotating with a considerable pressure. At this time, the blade edge of the blade mold 2' and the auxiliary rotating body (anvil)
Due to the uneven contact with the face plate 72, the so-called unevenness at the time of punching the formed sheet, that is, the part which should be originally punched at the time of punching the formed sheet, is formed at a portion where the broken line and the solid line in FIG. There were a lot of situations that would have left them untouched. A conventional means for eliminating such unevenness is to affix an unevenness removing tape or the like in advance to the position of the face plate of the auxiliary rotating body (anvil) 72 where the unevenness is likely to occur. The contact between the blade edge of the blade mold 2 'and the face plate of the auxiliary rotating body (anvil) 72 is made as uniform as possible. However, this means for removing unevenness requires a great deal of work, and it is very difficult to remove so-called unevenness even if it is applied. Further, when punching a corrugated cardboard or a board C, which is a molded sheet, the cutting edge of the cutting die 2 ′ directly hits the face plate made of an iron or stainless steel of the auxiliary rotating body (anvil) 72 while rotating with a considerable pressure. Therefore, there is a problem that the blade edge of the blade mold 2 'does not last long and the face plate does not last long. In addition, reference numeral 10a in FIG. 5 is a small piece residue of a small groove portion, 10b is a punched side portion, 16 is a small groove,
Reference numeral 17 denotes a side portion, and L denotes a punching line. Similarly, even in the conventional so-called flat-shaped molded sheet punching apparatus, when punching out a corrugated cardboard or plate ball C as a molded sheet, the punching blade is formed on a face plate made of an iron material or a stainless steel of the lower mold substrate 54. The cutting edge of the cutting blade 51 directly hits in a hard state with a considerable pressure. At this time, due to the uneven contact between the cutting edge of the punching blade 51 and the face plate of the lower die substrate 54, for example, the broken line in FIG. In a portion where the solid line intersects, there was often a so-called unevenness at the time of punching a molded sheet, that is, a state where a part to be originally punched at the time of punching a molded sheet was left without being punched. Also in this case, as described above in the so-called rotary-type formed sheet punching apparatus,
It takes a great deal of time and effort to remove unevenness, and even with this, it is very difficult to remove so-called unevenness. In addition, a corrugated cardboard or a board C which is a molded sheet is used.
When punching, the cutting edge of the punching blade 51 directly hits the face plate made of iron or stainless steel of the lower die substrate 54 with a considerable pressure in a hard state, so that the cutting edge of the punching blade 51 does not last long and the face plate There is a problem that does not last long. The present invention has been made in view of the above circumstances, and a hard resin coating is applied to an outer surface and / or an inner surface of a face plate in a so-called rotary-type, so-called flat-type punching apparatus for forming sheets, so that the coating is almost complete. It is an object of the present invention to provide an improved face plate structure in a punching apparatus for a formed sheet, which is capable of so-called unevenness removal and has a long life of a face plate and a punching blade.

The improved face plate structure in the apparatus for punching a molded sheet according to the first aspect of the present invention has a rotating body having a blade and a ruled line forming projection on its outer periphery, and is arranged to face the rotating body. An auxiliary rotating body, a so-called anvil, which is configured to include a so-called anvil, the blade mold, a rotating body that rotates while including a ruled line forming projection, and an auxiliary rotating body that rotates opposite to the rotating body, a so-called anvil, A predetermined portion of a corrugated cardboard or plateboard, which is a molded sheet, while passing a corrugated cardboard or plateboard, which is a molded sheet, while forming a crease line for folding with the crease forming protrusions on the corrugated cardboard or plateboard, which is the molded sheet. In a rotary-type formed sheet punching device that punches a sheet, an auxiliary rotating body disposed opposite to the rotating body, on the outer surface and / or inner surface of a so-called anvil face plate, To become subjected fixed with a means attaching such a coating portion made of hard resin Mubeatsu those characterized. The improved face plate structure in the apparatus for punching a molded sheet according to claim 2 is characterized in that an upper die substrate having a ruled line forming projection and a punching blade on the lower surface and a lower surface of the upper die substrate are opposed to each other. And a lower die substrate placed on a base, on which a corrugated cardboard or a plate ball as a molding sheet is placed and driven upward by a driving means toward the upper die substrate side. Ascending, the punching blade attached to the lower surface of the upper die substrate, and forming a ruled line for folding by forming the ruled line forming protrusion on the corrugated cardboard or board, which is a molded sheet, while abutting against the ruled line forming protrusion. In a flat-type molded sheet punching device that is configured to punch a predetermined portion of a corrugated cardboard or a plate ball as a molded sheet, an outer surface and / or an inner surface of a face plate of a lower mold substrate disposed on the base, To become subjected fixed with a means attaching such a coating portion made of hard resin Mubeatsu those characterized. According to the first aspect of the present invention, when punching a corrugated cardboard or a board made of a molded sheet, the edge of the blade mold has a considerable edge on the coating portion of the face plate made of an iron or stainless steel of the auxiliary rotating body (anvil). When directly hitting while rotating under pressure, the coating portion will be depressed in a concave shape only at the portion where the cutting edge touches, and the portion will act as a buffer, so that when punching, Since the contact between the cutting edge and the face plate of the auxiliary rotating body (anvil) can be made as uniform as possible while exhibiting a buffering action, the so-called unevenness described above is not left, and
It is possible to make the face plate and the blade edge of the blade mold last longer. According to the invention as set forth in claim 2, when punching a corrugated cardboard or a board which is a molded sheet, the cutting edge of the punching blade is applied with a considerable pressure to the coating portion of the iron or stainless steel face plate of the lower mold substrate. When the coating portion falls down and hits directly, the coating portion is depressed in a concave shape only at the portion where the cutting edge touches, and the portion acts as a buffering portion. Since the contact with the mold substrate can be made as uniform as possible while exhibiting the buffering action, the above-mentioned so-called unevenness is not left, and the cutting edge of the face plate and the punching blade can be prolonged.

Embodiments of the present invention will be described below in detail. FIG. 1 shows an explanatory view of an improved face plate structure of a so-called rotary type sheet punching apparatus according to an embodiment of the present invention. This rotary formed sheet punching device includes a rotating body 81 provided with a cutting die 84 and a ruled line forming projection 85 on the outer periphery, and an auxiliary rotating body (anvil) 82 arranged to face the rotating body 81. It is configured. The rotating body 71 and the auxiliary rotating body (anvil) 7
Reference numeral 2 denotes a state in which the columnar members are arranged horizontally. Reference numeral 73 in the figure denotes an auxiliary rotating body (anvil) 7
2 shows a portion of a rotating shaft made of metal.
The rotating body 81 provided with the blade mold 84 and the ruled line forming projection 85 rotates while passing between the rotating body 81 and an auxiliary rotating body (anvil) 82 that rotates opposite to the rotating body 81. A predetermined portion of a molded sheet, which is an object to be punched and on which a ruled line is formed with a ruled line forming projection 85, that is, a corrugated cardboard or a board C, which is a molded sheet, is punched. The formation of the folding rule is
Cardboard or board C which is a punched molded sheet
It is effective when assembling. In the rotary molded sheet punching apparatus having such a configuration, the structure of the face plate A according to the present embodiment is such that the outer surface of the face plate A of the auxiliary rotating body (anvil) 82 arranged to face the rotating body 81
A hard resin coating 83 having an appropriate thickness, for example, a thickness of 0.1 mm or more, is fixed and applied by means such as sticking. According to the so-called rotary forming sheet punching apparatus provided with the face plate A configured as described above, when punching out corrugated cardboard or board C as a forming sheet, the iron or stainless steel of the auxiliary rotating body (anvil) 82 is used. Coating part 8 of face plate A made of
When the cutting edge of the blade die 84 directly hits while rotating with a considerable pressure, the coating portion 83 is depressed in a concave shape only at the portion where the cutting edge hits (the broken line at the top of the auxiliary rotating body 82 in FIG. 1). ), And this portion acts as a buffering portion, so that during punching, the contact between the cutting edge of the blade die 84 and the face plate of the auxiliary rotating body (anvil) 82 exhibits a buffering effect. Since it can be made as uniform as possible, for example, so-called unevenness is not left in a portion where the broken line and the solid line in FIG. 5 intersect, and the edge of the face plate A and the cutting edge of the blade mold 84 last longer. Can be done. 2 (a), (b),
(C) is an explanatory view of an improved face plate structure of the so-called flat molded sheet punching apparatus according to the embodiment of the present invention. This flat molded sheet punching device basically includes a thin rectangular parallelepiped punching blade 91 for punching a corrugated cardboard or a sheet ball C as a molded sheet, and a thin rectangular parallelepiped as shown in FIG. An upper substrate 90 having a ruled line forming projection 92 disposed thereon (always fixed and cannot be raised or lowered), is disposed below and opposed to the upper substrate 90, and is a corrugated cardboard or plate as a molded sheet. A lower substrate 94 on which a ball C is placed and which is driven upward by a driving means (not shown) toward the upper substrate 90; the lower substrate 94 rises to form a punching blade 91; A predetermined portion of the corrugated cardboard or the board C, which is a molded sheet, is punched out while forming a folding line on the corrugated cardboard C, which is a molded sheet, while being in contact with the protrusion 92.
The formation of the folding ruled line is effective when assembling a corrugated cardboard or a board C which is a punched formed sheet. Reference numeral 3 a in FIG. 4B denotes a screw portion for arranging the ruled line forming protrusion 92 on the upper die substrate 90. Reference numeral 70 in the figure is a pull-out chase. The upper substrate 90 includes an upper substrate 90 that is fixedly arranged and holds the punching blade 91 and the ruled line forming protrusion 92 in a state of protruding downward. The lower mold substrate 94 includes a base 93.
The lower mold substrate 94 is mounted thereon, and is driven by driving means (not shown) so as to move up or down to the upper mold substrate 90 side as indicated by an arrow in the figure. In the punching apparatus for a flat molded sheet having such a configuration, the structure of the face plate A according to the present embodiment may be appropriately provided on the outer surface and / or the inner surface of the face plate A of the lower mold substrate 94 disposed on the base 93. A hard resin coating 95 having a thickness of, for example, 0.1 mm or more is fixed and applied by means such as sticking. 2A shows a state in which a coating portion 95 is applied to the outer surface of the face plate A of the lower mold substrate 94, and FIG. 2B shows the inner surface (back surface) of the face plate A of the lower mold substrate 94.
FIG. 2 shows a state in which a coating portion 95 is applied, and FIG.
(C) shows a state in which coating portions 95 are applied to both surfaces of the face plate A of the lower die substrate 94. According to the so-called flat molded sheet punching device provided with the face plate A configured as described above, the corrugated cardboard or the sheet ball C as the molded sheet is used.
At the time of punching, when the cutting edge of the punching blade 91 falls down with considerable pressure and directly hits the coating portion 95 of the face plate A made of iron or stainless steel of the lower die substrate 94, the coating portion 95 The portion where the cutting edge touches is depressed into a concave shape (the portion indicated by two dots on the left and right of the coating portion 95 where the cutting edge of the punching blade 91 in FIG. 2 hits).
In other words, since the portion acts as a buffer, the contact between the cutting edge of the punching blade 91 and the lower mold substrate 94 can be made as uniform as possible while exhibiting a buffering effect. From FIG. 5, for example,
The so-called unevenness is not left in a portion where the middle broken line and the solid line intersect, and the edge of the face plate A and the punching blade 91 can be made longer.

According to the present invention, when punching out corrugated cardboard or board, which is a molded sheet used in an assembling box or the like, a so-called rotary-type punching device can be used.
Even in the case of a so-called flat punching device, when the punching of the formed sheet is completed, the so-called unevenness state can be eliminated without the so-called unevenness remaining, and at the same time, the face plate and the cutting edge of the punching blade in each of the above devices are removed. It is possible to provide an improved face plate structure in a molded sheet punching device that can be made to last a long time.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an improved face plate structure of a so-called rotary formed sheet punching apparatus according to an embodiment of the present invention, and FIG. 1 (a) is a so-called rotary formed sheet according to an embodiment of the present invention. 1B is an explanatory view of an improved face plate structure of the punching device of FIG. 1, and FIG. 1B is a schematic enlarged view of a part of an auxiliary rotating body (anvil) 83 in a state where a coating portion 83 is applied to an outer surface of a face plate A; c) is an auxiliary rotating body (anvil) 8
FIG. 1D is a schematic explanatory view of a partially enlarged state in which a coating portion 83 is applied to the inner surface of the face plate A of FIG. 3, and FIG. 1D shows a state where the coating portions 83 are applied to both surfaces of the face plate A of the auxiliary rotating body (anvil) 83. FIG. 3 is a schematic explanatory diagram of a partially enlarged view.

FIG. 2 is an explanatory view of an improved face plate structure of a so-called flat molded sheet punching apparatus according to an embodiment of the present invention.
2A is a schematic explanatory view showing a state in which a coating portion 95 is applied to the outer surface of a face plate A of the lower mold substrate 94, and FIG. 2B is a diagram showing a state in which the coating portion 95 is applied to the inner surface of the face plate A of the lower mold substrate 94. FIG. 2C is a schematic explanatory view showing a state in which coating portions 95 are applied to both surfaces of the face plate A of the lower die substrate 94.

FIG. 3 is a schematic explanatory view of a conventional so-called rotary type punching apparatus for a formed sheet.

FIG. 4 (a) is a schematic explanatory view of a conventional so-called flat molded sheet punching apparatus, and FIG. 4 (b) is a schematic explanatory view of a ruled line forming projection in the punching apparatus.

FIG. 5 is an explanatory view showing a state of a corrugated cardboard or a board which is a formed sheet after punching by a conventional punching device.

[Explanation of symbols]

 A face plate C Corrugated cardboard or plate ball which is a formed sheet 73 A portion of the rotating shaft of the auxiliary rotating body 82 Auxiliary rotating body (anvil) 83 Coating part 84 Blade type 85 Ruled line forming projection 90 Upper die substrate 91 Punched blade 92 Ruled line formation Projecting part 93 Base 94 Lower substrate 95 Coating part

Claims (2)

[Claims] 1. A rotating body 81 having a cutting die 84 and a ruled line forming protrusion 85 on its outer periphery, and an auxiliary rotating body, a so-called anvil 82, disposed opposite to the rotating body 81, A corrugated cardboard or board C, which is a formed sheet, is placed between a rotating body 81 that rotates while having a blade mold 84 and a ruled line forming projection 85, and an auxiliary rotating body that rotates opposite to the rotating body 81, a so-called anvil 82. While passing, the ruled line forming projections 8
5. A rotary-type formed sheet punching device for punching a predetermined portion of a corrugated cardboard or board ball C, which is a formed sheet, while forming a crease line for folding by using an auxiliary rotating body opposed to the rotating body 81; An improved face plate in a molding sheet punching device, characterized in that a so-called hard resin coating portion 83 is fixed to an outer surface and / or an inner surface of a face plate A of a so-called anvil 82 by sticking or the like. Construction. 2. A ruled line forming projection 92 and a punching blade 9
1 and a lower surface of the upper die substrate 90, which is disposed below and facing the upper die substrate 90, and a corrugated cardboard or plate ball C as a molding sheet is placed on the upper die substrate 90 to face the upper die substrate 90. A lower substrate 94 that is driven upward by driving means and is disposed on a base 93. The lower substrate 94 is raised, and a punching blade 91 attached to the lower surface of the upper substrate 90; While being in contact with the forming protrusions 92, the corrugated cardboard or board C which is a formed sheet is used.
A flat molded sheet punching device for punching a predetermined portion of a corrugated cardboard or board ball C, which is a molded sheet, while forming a ruled line for folding with the ruled line forming projections 92 on the base 93 An apparatus for punching a molded sheet, characterized in that a hard resin coating 95 having a suitable thickness is fixed to the outer surface and / or inner surface of the face plate A of the disposed lower die substrate 94 by means such as sticking. Improved faceplate structure.