JP2000127097A - Burr punching device for molding sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burr punching device for a molding sheet such as a corrugated board, a plate board or the like, which is capable of surely punching a small piece, a side part, a groove part, a hole part and the like of the board. SOLUTION: This device is a rotary molding sheet burr punching device adapted to punch a corrugated board which is a molding sheet. In the device, a knife edge 27 has a small piece punch blade 22 which is shaped substantially corresponding to the contour of a small piece burr of a small groove portion formed in the corrugated board C and expanded gradually from the deepest part of the small groove to an inlet part, and a side punch blade 23 for punching the side part along the punch line of the side part of the corrugated board C. The knife edge 27 is provided on the outer periphery of a rotating body.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary punching apparatus for a molded sheet, which removes, in the next step, a scum such as a corrugated cardboard or a plate ball as a formed sheet.

2. Description of the Related Art Conventionally, when a small piece of a corrugated cardboard or a plate ball as a molded sheet is taken out by a corrugated or board manufacturing apparatus, a straight blade is generally used in a punching mechanism of the chip punching device.
Alternatively, a wave blade having a predetermined pitch is used. And, in the scrap removal mechanism of the punching device,
The punched scum is removed to the outside from the cardboard or board. In any case, in the case of the conventional apparatus, only one pitch of the above-mentioned wave blade is 2.0 mm or more. The conventional apparatus will be described in more detail. The straight blade 10 shown in FIG.
9 or the wave blade 103 shown in FIG. 9 is attached to the outer periphery of the rotating body which is driven to rotate, and these are cut into the side portions to be punched and the small grooves forming the small chip residue 101, and the small chip residue 101 is cut by the straight blade 102 or the wave blade 103. Was punched out, and in the next step, the small piece residue 101 was hooked and dropped.

However, in the case where the straight blade 102 or the wave blade 103 is used, there have been the following inconveniences in the related art. That is, when the straight blade 102 is used, since the straight blade 102 sharply cuts out the sides and small pieces of the corrugated cardboard or the board, the operator cuts the finger of the operator handling the corrugated board or the board. With the danger of getting lost. In addition, wave blade 1
When using No. 03, one pitch of the wave portion is coarse (one pitch of 2.0 mm or more), so that a small piece
01 was not completely separated from the small groove but hung, and the punching performance was poor in that the operator had to manually remove each time in the subsequent delivery part. Therefore, the present inventor has arranged a punching blade having a shape substantially corresponding to the contours of various groove portions, various hole portions, etc. formed in a corrugated cardboard or a board, and a punching line at a side portion of the corrugated board or a board. By setting the pitch of each wave blade with the side punching blade to be less than 2.0 mm, which was completely inconceivable in the past, it is possible to reliably punch and remove scum and to develop the present invention. It has been reached. That is, an object of the present invention is to provide an apparatus for blanket punching a molded sheet, which can reliably punch small pieces, side portions, and the like of a corrugated cardboard or a board ball as a molded sheet.

According to the first aspect of the present invention,
What is claimed is: 1. A rotary-type formed sheet scrap punching device for punching a corrugated cardboard or a board, which is a formed sheet, wherein said small groove has a shape substantially corresponding to the contour of a small piece of a small groove portion formed in said corrugated cardboard or a board. A small piece punching blade having a shape gradually expanding from the deepest part of the portion to the entrance of the small groove portion (portion connected to the side portion), and a side portion along a punching line of the side portion of the corrugated cardboard or board ball. A blade mold having a side punching blade for punching is provided on the outer periphery of the rotating body. According to the present invention, a small groove portion of a molded sheet made of corrugated cardboard or board is punched by a small die punching blade attached to a rotating body, and a side portion is punched by a side punching blade attached to a rotating rotary body. Therefore, the punching force of the small piece punching edge and the side punching blade can be reliably applied to the small piece residue in the small groove portion and the punching line in the side portion to reliably punch out these. According to a second aspect of the present invention, the rotary small piece punching blade and the side punching blade according to the first aspect are straight blades. According to the second aspect of the present invention, it is possible to reliably punch small chips in a small groove portion and a punching line in a side portion by using a small piece punching blade and a side punching blade with a straight blade. According to a third aspect of the present invention, in the small piece punching blade and the side punching blade according to the first aspect, the small piece punching blade has a fine pitch and the side punching blade has a coarse pitch. The invention according to claim 4 is the invention according to claim 1.
In the small piece punching blade and the side punching blade described above, one pitch of each punching blade is less than 2.0 mm to 0.1 mm or more. According to the third and fourth aspects of the present invention, it is possible to more reliably punch small chips in the small groove portion without failing to punch out. The invention according to claim 5 is a rotary-type molded sheet scrap punching apparatus for punching a corrugated cardboard or a plateboard as a molded sheet, wherein various groove portions, various hole portions formed in the corrugated cardboard or the plateball, A cutting die having a punching blade having a shape substantially corresponding to a contour of a scum such as a curve of various shapes, and a side die having a side punching blade arranged along a punching line on a side portion of the corrugated cardboard or the board, is used as a rotating body. It is provided on the outer periphery. According to a sixth aspect of the present invention, a punching blade having a shape substantially corresponding to a contour of a scum such as various grooves, various holes, and various shapes of curves according to the fifth aspect, and a side punching blade are straight blades. Things. The invention according to claim 7 is
6. A punching blade having a shape substantially corresponding to a contour of a scum, such as various groove portions, various hole portions, and curves of various shapes according to claim 5,
In the edge punching blade, the punching blade has a fine pitch, and the edge punching blade is a wave pitch having a coarse pitch. According to an eighth aspect of the present invention, there are provided various groove portions according to the fifth aspect,
The punching blades and side punching blades having shapes substantially corresponding to the outline of the scum, such as various hole portions and various shapes of curves, have a pitch of each punching blade of less than 2.0 mm to 0.1 mm or more. is there. According to the invention as set forth in claims 5, 6, 7, and 8, various types of grooves, various types of holes, and various shapes such as curves, etc., can be more reliably assured without failing to punch out scum of the shape of the scum. Can be punched. According to a ninth aspect of the present invention, there is provided a rotary-type formed sheet scrap punching apparatus according to any one of the first to eighth aspects, further comprising an auxiliary rotating body that is disposed to face a rotating body having a blade die on an outer periphery. The position at which the blade of the rotating body is received is a hard or hard rotating body made of metal, or a soft or soft rotating body made of a material other than metal. According to the ninth aspect of the present invention, in the rotary type sheet scrap punching device, the position of the rotary body facing the rotary body provided with the blade die on the outer periphery is made of metal. By using a hard type or hard type rotating body made of a material other than metal or a soft type or soft type rotating body made of a material other than metal, the respective functions of the first to eighth aspects can be exhibited.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a molded sheet punching apparatus according to the present invention, which is configured to punch out corrugated cardboard or plate ball, which is a molded sheet, and remove scum punched in the next step. Will be described. First, with regard to the molded sheet scrap punching apparatus of the first embodiment,
This will be described with reference to FIGS. FIG. 1 is a schematic diagram showing an apparatus for punching a molded sheet according to an embodiment of the present invention. The punching apparatus for a formed sheet performs required printing on a corrugated cardboard or a board (hereinafter referred to as a corrugated cardboard) C supplied from a paper feeding unit (not shown) by a printing unit 2, and then a rotary punching unit 3. For example, as shown in FIG.
0b, and furthermore, the cardboard C is removed from the scrap removing portion 4.
Where the scrap 10a and the punched side 10b
Is removed. This molding sheet punching device is not particularly illustrated, in addition to the small piece residue 10a and the punching side portion 10b, but is substantially similar to various groove portions, various hole portions, various shapes of curves, etc. of the molding sheet. Of course, the corresponding shape is also punched and removed. Furthermore,
The sheet of the corrugated cardboard or the board C after the scrap removal step, that is, the scrap removal step, ie, the scrap removal step 4 or the like, is performed as a product by the user in a vial delivery section and a grip margin removal section (not shown). It is supplied, assembled on the user side, and put to practical use as a cardboard or board container. As shown in FIG. 1, the printing unit 2 has a drum-shaped plate cylinder 11 and a drum-shaped impression cylinder 14 facing each other.
While passing the corrugated cardboard C before punching between them, the plate 13 provided on the plate cylinder 11 is brought into contact with the surface of the corrugated cardboard C to print required characters, figures, and the like. Next, an example of the configuration of the punching unit 3 will be described with reference to FIGS. The punching unit 3 includes a drum-shaped rotating body 21 and a drum-shaped auxiliary rotating body (anvil) that are arranged to face each other.
25, an auxiliary plate 26 such as a plywood plate attached along the outer periphery of the rotating body 21 and a small piece punching blade 22 and a side punching blade 23, and, if necessary, various groove portions, various hole portions, and the like. A required number of blade dies 27 each having a punching blade having a shape substantially corresponding to a contour of a scum such as a curve of various shapes are attached. The rotating body 21 and the auxiliary rotating body (anvil) 25
Can be implemented by disposing them in reverse to the illustration. The auxiliary rotating body (anvil) 25 receives the blade 27 of the rotating body 21 at a hard or hard rotating body made of metal or a soft or soft rotating body made of a material other than metal. be able to. The small piece punching blade 22
Small chip residue 1 in the small groove 16 formed in the cardboard C
0a and a shape substantially corresponding to the contour of the small groove 16 and an entrance portion of the small groove 16 from the deepest portion (a portion connected to the side portion 17).
The shape is gradually expanded as it reaches. Further, the side punching blade 23 is formed in a shape that punches a side portion along a punching line L of the side portion 17 of the cardboard C. As the small piece punching blade 22 and the side punching blade 23, a straight blade as shown in FIG. 3 or a wave blade as shown in FIG. 4 can be used. Any of the straight blades and wave blades can be used as appropriate. The small piece punching blade 22 of the wave blade as shown in FIG. 3 has a fine pitch, and the side punching blade 23 has a coarse pitch. For example, in the first embodiment, the pitch of the small piece punching blades 22 is 1 mm, and the pitch of the side punching blades 23 is 2 mm. As shown in FIG. 6, the scrap removing section 4 extends an endless flat belt 33 between the driving pulley 31 and the driven pulley 32, and also, between the driving pulley 31 and the driven pulley 32, and A required number of, for example, elliptic columnar vibration imparting rollers 34 are arranged at positions between them, and the driving pulley 31 is rotationally driven in the direction of the arrow by a driving source (not shown).
The vibration applying roller 34 is rotationally driven by a drive source (not shown) to bring the outer periphery of the vibration applying roller 34 into contact with the inner surface of the belt 33 in a discontinuous state. Vibration up and down as shown by arrows. As shown in FIG. 7, the scrap removing unit 4 may be configured to use a blower unit 40 that supplies wind to the corrugated cardboard C that has been subjected to the punching process by the punching unit 3 to remove the scrap. . According to the above-mentioned scrap sheet punching apparatus, a corrugated cardboard C is fed from a paper feeding unit (not shown) through the printing unit 2 between the drum-shaped rotating body 21 and the drum-shaped auxiliary rotating body (anvil) 25. And the above-mentioned structure attached to the rotating body 21, in particular, a so-called flared shape small piece punching blade 2.
2, the side punching blade 23, various groove portions, various hole portions,
A punching line L of the small groove 16 and the side 17 is punched by a blade die 25 having a punching blade having a shape substantially corresponding to the contour of the waste such as a curve of various shapes. At this time, the punching force of the small blade punching blade 22, the side punching blade 23, the punching blade having a shape substantially corresponding to the contour of the scum such as various groove portions, various hole portions, various shapes of curves, etc., reliably ensures the small pieces of the small groove 16 portion. By acting on the scum 10a and the punching line L of the side portion 17, each scum such as the small piece scum 10a and the punched side portion 10b can be reliably punched. In particular, when the small piece punching blade 22 uses a fine pitch and the side punching blade 23 uses a wave pitch with a coarse pitch, the small piece scrap 10a in the small groove 16 portion of the corrugated cardboard or the board ball C is punched more reliably without impairment. It becomes possible. Next, in the scrap removing section 4, the cardboard C from the punching section 3 is conveyed on the belt 33 driven by the driving pulley 31 in the direction of the arrow shown in FIG. Then, the outer periphery of the vibration applying roller 34 comes into contact with the inner surface of the belt 33 in a discontinuous state, whereby the conveying surface of the belt 33 vibrates up and down. As a result, the small piece scrap 10a and the punched side portion 10b An external force, that is, a vibrating force acts on the small piece scrap 10a and the punched side portion 10b, which are completely separated and removed from the corrugated cardboard or the board ball C, and further dropped downward from the belt 33 to be removed. Thereby, the small piece residue 1
0a, the separation and removal operation of the punched side portion 10b can be automatically and efficiently executed. The small piece punching blade 22, the side punching blade 23, various groove portions, various hole portions,
A punching blade having a shape substantially corresponding to the contour of a scum such as a curve of various shapes, each pitch of which is less than 2.0 mm and 0.1 m
m, preferably less than 2.0 mm and 1.0 mm or more.

According to the present invention, the punching force of a rotary punching blade having a shape substantially corresponding to a contour of a scum, such as a small piece punching blade, a side punching blade, various grooves, various holes, and various shapes of curves. Is applied to the shape line substantially corresponding to the outline of the scum, such as the punching line of the small groove portion and the side portion, various groove portions, various hole portions, various shapes of curves, etc. The present invention can provide a scrap punching apparatus for a molded sheet such as a corrugated cardboard or a plate ball, which can be punched out.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an outline of a molded sheet scrap punching apparatus according to the present embodiment.

FIG. 2 is a perspective view illustrating a configuration of a punching unit according to the present embodiment.

FIG. 3 is a schematic view showing an example of the shape of a small piece punching blade and a side punching blade of the present embodiment.

FIG. 4 is a schematic view showing another example of the shape of the small piece punching blade and the side punching blade of the present embodiment.

FIG. 5 is a plan view of a corrugated cardboard punched by the scrap sheet punching device of the present embodiment.

FIG. 6 is a schematic diagram illustrating an example of a scrap removing section according to the present embodiment.

FIG. 7 is a schematic diagram showing another example of a scrap removing section in the present embodiment.

FIG. 8 is an explanatory view showing an example of a conventional punching blade.

FIG. 9 is an explanatory view showing another example of a conventional punching blade.

[Explanation of symbols]

 Reference Signs List 3 punching portion 10a small piece waste 10b punching side 16 small groove 17 side 21 rotating body 22 small piece punching blade 23 side punching blade 25 auxiliary rotating body C corrugated cardboard

Claims (9)

[Claims] 1. A rotary type sheet scrap punching apparatus for punching a corrugated cardboard or a board, which is a molded sheet, wherein the apparatus substantially corresponds to a contour of a small piece of a small groove portion formed in the corrugated board or a board. A small piece punching blade having a shape and gradually expanding from the deepest portion of the small groove portion to the entrance portion (portion connected to the side portion) of the small groove portion, and punching a side portion of the corrugated cardboard or board ball A scrap punching device for a molded sheet such as a corrugated cardboard or a board ball, comprising a cutting die having a side punching blade for punching a side portion along a line on an outer periphery of a rotating body. 2. The apparatus for punching out scraps from a molded sheet such as a corrugated cardboard or a board according to claim 1, wherein said small piece punching blade and said side punching blade are straight blades. 3. The corrugated cardboard or board ball according to claim 1, wherein the small piece punching blade and the side punching blade are wave blades having a small pitch of the small piece punching blade and a coarse pitch of the side punching blade. Dust punching device for molded sheet. 4. A small piece punching blade and a side punching blade, wherein one pitch of each punching blade is less than 2.0 mm to 0.1 m.
2. The scrap punching mechanism for corrugated cardboard or plateboard according to claim 1, wherein the scraper is at least m. 5. A rotary-type molded sheet scrap punching apparatus for punching a corrugated cardboard or a plate ball as a molded sheet, comprising: various groove portions formed in the corrugated cardboard or a plate ball;
Various hole portions, a punching die having a shape substantially corresponding to the contour of the scum such as curves of various shapes, and a blade die having a side punching blade arranged along a punching line of a side portion of the corrugated cardboard or board ball or the like. A scrap punching device for a molded sheet, such as a corrugated cardboard or a board, provided on the outer periphery of a rotating body. 6. A punching blade having a shape substantially corresponding to a contour of a scum, such as the various groove portions, various hole portions, and curves of various shapes;
6. The scrap punching mechanism for corrugated cardboard or plateboard according to claim 5, wherein the side punching blade is a straight blade. 7. A punching blade and a side punching blade having a shape substantially corresponding to a contour of a scum such as the various groove portions, various hole portions, and curves of various shapes, the punching blades have a fine pitch, and the side punching blades have a pitch. 6. A scrap punching mechanism for corrugated cardboard or plateboard according to claim 5, which is a rough wave blade. 8. The punching blades and side punching blades each having a shape substantially corresponding to the outline of the scum, such as the various groove portions, the various hole portions, and the curves of the various shapes, each pitch of the punching blades is 2.0 m.
6. The scrap punching mechanism for corrugated cardboard or plateboard according to claim 5, which is less than m to 0.1 mm or more. 9. An auxiliary rotating body, which is disposed in opposition to a rotating body having a cutting edge on the outer periphery in the rotary-type molded sheet scrap punching device, a position for receiving the cutting edge of the rotating body is made of metal. 9. The scrap punching mechanism for corrugated cardboard or plate ball according to claim 1, wherein the mechanism is a hard type or hard type rotating body, or a soft type or soft type rotating body made of a material other than metal.