JP2987080B2 - Ejection device for punching waste in paper cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing punched chips in a paper cutting machine, and more particularly, to a method in which a material sheet previously punched is placed between a pair of upper and lower dies and the upper and lower dies are brought close to each other. Device for punching out a punching line by punching a punching line of a material sheet with a punching material that is moved in a direction from one of the molds, and particularly when the width of the punching dust is narrow, The pressing force is reliably applied, and the punching line formed without leaving a large residual portion can be reliably punched, so that the punched chips can be removed from the punched product.

[0002]

2. Description of the Related Art Heretofore, in this type of punching out device for punched chips,
In the pre-process, for example, as shown in FIG. 11, the material sheet 1 on which a required die is cut to form a punching line L is separated by a punching line L around a finished punched product 1A. Various devices have been provided for removing the scrap 1B. As shown in FIG. 12, the punching line L that is die-cut in the above-described previous step is formed in a so-called perforated shape, and a seam (hereinafter, referred to as a residual portion La) is formed at a required interval in a cut portion. The portions other than the remaining portion La are cut off.

[0003] The material sheet 1 on which the punching line is formed
Conventionally, for example, the applicant has shown in FIG.
3 (A) and 3 (B) are provided. (Japanese Patent Laid-Open No. 2-2
No. 18598) In this apparatus, a punched material 4 is projected downward on a substrate 3 of an upper die 2 along a punching line L, and a sheet surrounded by the punched material 4 is provided via an elastic material 5. While the pressing plate 6 is attached, a substrate 8 having substantially the same shape as the punched product is fixed to the lower die 7 via a support frame 9.

[0004] In the above-mentioned removal device, the upper die 2 is lowered while the material sheet 1 is placed on the upper surface of the substrate 8 of the lower die 7, and the material sheet 1 is sandwiched between the sheet pressing plate 6 and the substrate 8. In this state, the blank 1B is pushed down by the blank 4 and the remaining portion L
a is cut off, and the cutting waste 1B is removed.

In recent years, in order to reduce the cost of the material sheet 1, it has been required to reduce the width H of the cutting waste 1B to reduce the disposal area.
The width H of B is reduced to about 5 mm. At the same time, in recent years, in order to improve the productivity of the punched product, the upper and lower dies 2,
7 and the conveying speed of the material sheet 1 and 1 and the approaching / separating speed of the upper and lower dies 2 and 7 are increased.
(Times / minute).

[0006]

As described above, if the width H of the punching waste is small, the pressing force of the punching material 4 cannot be sufficiently applied to the punching waste 1B. Therefore, when the large remaining portion La constituting the punching line L is left, the remaining portion La cannot be easily separated, and the small remaining portion La is formed. However, if the residual portion La is small, the residual portion La is torn off due to wind pressure or the like during high-speed transport of the material sheet 1, and a problem that the punched waste 1B remains on the transport line occurs. Further, at the time of punching by the stripping device, there is a problem that the punched chips 1B cannot be stripped accurately along the punching line.

As described above, since it is problematic to make the residual portion La small, even if the residual portion La is made large, the pressing force of the punched material 4 against the narrow blank swarf 1B can be reliably achieved. It is required to apply a load so that the punching waste 1B can escape.

In order to reliably apply the pressing force of the punched material to the material sheet, it is possible to reliably apply the pressing force of the punched material by supporting the lower surface of the punched chips when the punched material is disengaged. There is provided one in which a protruding plate having spring properties is provided from the outer end surface of the lower die substrate so that the lower surface of the punched waste 1B can be supported from the inside. However, when a protruding plate serving as a support is protruded from the lower die substrate side, the protruding plate comes into contact with the punched material 4 and is bent downward each time the punching waste 1B comes off, and the spring property gradually decreases. However, it is not possible to reliably support the punching waste, and there is a problem in durability. In the state where the punching waste 1B has been removed, the punched material 1B is on the upper surface of the protruding plate, and when the protruding plate is elastically restored after the removal, the punched waste 1B jumps up and down. There is a problem that the cutting waste 1B enters between 2 and 7. This problem easily occurs because air is blown up by negative pressure generated by lowering and raising the upper mold 7 at high speed.

The present invention has been made in view of the above problems, and even when the punched chips are narrow, the pressing force of the punched material is reliably applied to the punched chips to form a large residual portion. It is an object of the present invention to provide a punching device for a punching device in a paper container punching device capable of reliably punching out even a punching line and removing the punching dust from a punched product.

[0010]

In order to achieve the above object, according to the present invention, there is provided a punching line comprising a cut portion and a residual portion along an outer peripheral edge of a punched product in a die cutting step in advance. The material sheet provided with is placed between the upper and lower molds facing each other in the removal device, and the upper mold is moved close to the lower mold, and the material sheet is punched by the punched material protruding from the substrate of the upper mold. In a punching chip removal device in which the chips are pushed down from the outer surface of the lower die and the above-mentioned remaining portion is separated to separate the punching chips from the punched product, the chip is opposed to the outer end surface of the lower die on which the material sheet is placed. Then, a fixing base for the support plate is provided at a wider interval than the punching waste, and a support plate having elasticity that protrudes from the inner end surface of the fixing base to the lower surface of the punching waste and supports the punching waste is provided. While leaving a space between the tip of the support plate and the punching line, A punching material for a punching waste in a paperboard punching device, characterized in that the punching material for the punching waste at the part to be cut is formed in a thin plate shape and protrudes from the upper die substrate along the punching line. Is what you do. The above-mentioned removal device can be suitably used for a material sheet having a small width of punched scrap and a large remaining portion of the punching line.

According to a second aspect of the present invention, the support plate is formed of a material having elasticity, protrudes at a required interval along the outer end surface of the lower die, and is supported by at least the support plate. A residual portion is located on the material sheet punching line. The support plate holds the leading end side of the punching waste from the lower surface side, so that when the punching material comes off, the pressing force of the punching material is securely held by the punching waste, and the punching waste that comes off Does not interfere when a book is dropped downward. As the support plate, a steel plate, a resin plate, or the like having a spring property is preferably used, and a plate that bends downward when the punched chips come off and that elastically returns upward is preferably used. Note that the support plate does not need to be bent and may not be made of an elastic material as long as the tip lower surface of the punching waste is set to be slightly held and the punching waste can be dropped from the gap between the support plate and the lower mold. .

According to a third aspect of the present invention, the thin plate-shaped punched material has a saw-like shape in which pressing portions protruding at an acute angle are continuously provided.

According to a fourth aspect of the present invention, the punching material attached to the upper die substrate includes the thin plate-like punching material and the L-shaped punching material. , A wide lower end horizontal portion, and a plurality of pressing portions protruding at an acute angle from a punch contact surface of the lower end horizontal portion.

[0014]

According to the punching device of the present invention, the material sheet is placed on the lower mold and the punching line for the material sheet is connected to the outer end face of the lower mold. And the inner surface of the punching material, and the punching debris is supported from below with the support plate protruding from the lower surface of the outer end of the punching debris of the material sheet. From this state, the upper die is lowered, and the thin plate-shaped punched material protruding from the upper die presses the upper surface portion of the punched scrap located between the tip of the support plate and the punching line, so that the punching is performed. The remaining portion connecting the punched product and the punching waste is cut off, and the punching waste is removed from the punched product.

At this time, since the punching waste is supported on the lower surface by the support plate, the pressing force of the punching material is securely applied, the large remaining portion is reliably cut off, and the punching waste is removed. Removed from punched products. In addition, when the upper die is lifted after the punching chips are removed, air is blown up from the gap between the punched material and the outer end surface of the lower die due to the negative pressure. The protrusions prevent the punched chips from floating and entering between the upper and lower dies.

According to a second aspect of the present invention, the support plate projects along the outer end surface of the lower die at a required interval, and the punching line formed on the material sheet by the support plate remains. In order to support the lower surface of the outer end of the punching waste at the portion facing the portion, the pressing force of the punched material is reliably applied to the remaining portion, and the remaining portion is cut off. Further, since the support plate is formed of an elastic material, the support plate gradually bends at the time of disengagement, and at the same time as the residual portion is cut off, the tip of the support plate at which the punched chips are bent. After passing through the portion, the support plate returns to the current state and is located above the punching waste, so that the punched waste that has escaped does not jump upward.

According to the third aspect of the present invention, since a plurality of pressing portions protruding at an acute angle are continuously provided on the thin plate-shaped punching material, the punching material is formed along the punching line. In addition to preventing slipping, the pressing force is reliably applied to the punched scrap by point contact with the punched scrap.

According to a fourth aspect of the present invention, the punched material comprises the thin plate-shaped punched material and the L-shaped punched material. Since a plurality of pressing portions projecting at an acute angle are provided at the wide bottom horizontal portion, a pressing force can be applied to the entire surface in the width direction of the punching chips while preventing the punching chips from sliding in the width direction. .

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. As shown in FIG. 1, the paper box punching device according to the first embodiment of the present invention has a movable upper die 2 and a fixed lower die 7, and the upper die 2 is driven by a driving means (not shown). The punched chips 1B on the outer peripheral portion of the material sheet 1 are made to fall out by a thin plate-shaped punching material 10 and an L-shaped punching material 11 by being lowered.

As shown in FIG. 2, the material sheet 1 forms a punching line L composed of a cut portion Lb and a residual portion La in advance in accordance with the shape of the punched product 1A before the removal operation as in the prior art. doing. Punching waste 1B located outside the above-mentioned punching line L
Is formed to be a narrow width (about 5 mm), and
“a” is formed leaving a large size so that the punched chips 1B are not broken by the wind pressure during high-speed conveyance.

As shown in FIG. 3, the upper die 2 is formed on a wooden substrate 3 at a slightly outside position along a punching line L of a punched product 1A in the form of a thin plate made of a metal such as aluminum. The material 10 and the L-shaped punched material 11 are combined to project downward. Further, a sheet pressing plate 6 made of a thin plate slightly smaller than the punched product 1A is protruded through an elastic material 5 made of sponge or the like in a region surrounded by the punched materials 10 and 11. . The sheet push plate 6 is made to project slightly below the lower end of the punched material 11 by the elastic material 5.

On the other hand, as shown in FIGS. 4 and 5, the lower mold 7 is formed of aluminum or the like along the outer peripheral edge of a thick wooden substrate 12 having an outer shape slightly smaller than the outer shape of the punched product 1A. An outer frame member 13 formed by bending a metal plate is attached, and an upper surface thereof forms an arrangement surface 15 on which the material sheet 1 is placed. The lower die 7 is provided with a support plate 14 for the support plate at a required distance from the outer end surface of the outer frame member 13 and at a required interval in the longitudinal direction from the inner end surface of the fixed base 14. A plate 16 protrudes.

The fixing table 14 is formed of an outer frame projecting in a U-shape from the outer portion of the substrate 12, and a space between the outer end surface of the substrate 12 and the inner end surface of the fixing table 14 An interval wider than the width H of the blank 1B is formed. The fixing base 14 is provided with a mounting portion 14a for installing the support plate 16 at a predetermined interval, and the mounting portion 1a is provided at the time of removal.
A residual portion La is formed on the blanking line L of the material sheet 1 opposed to 4a. The fixing bases 14 may be separately provided at positions where the support plates 16 are protruded.

The support plate 16 is made of an elastic rectangular resin plate or a steel plate, protrudes from the outer lower surface of the punched chips 1B of the material sheet 1 placed on the lower mold 7, and overlaps with a required width h. On the other hand, a required interval is set between the blanking line L of the material sheet 1 placed on the placement surface 15. The support plate 16 is located at a residual portion La where the straight outer peripheral portion of the punched product 1A and the narrow-width blank 1B are continuous. In addition, the support plate 16 is made to be flush with the placement surface 15 and an adhesive or a bonding agent is attached to the fixing base 14 so that the width h overlapping the punching waste 1B is about 1 to 3 mm. It is fixed with screws. In the present embodiment, the thickness t of the support plate 16 is set to about 1 mm so that the lower surface of the punched waste 1B is reliably supported, while being able to bend when it comes off.

The outer frame member 13 is a thin upper end horizontal plate portion 1 which is continuous with the outer end of the material sheet mounting surface on the upper surface of the substrate 12.
3a and a vertical plate portion 13c along the outer peripheral end surface of the substrate 12 from the inner end of the upper horizontal plate portion 13a.
The lower end has a lower horizontal plate portion 13b extending along the lower surface of the substrate 12. A screw hole 13d is formed in the lower horizontal plate portion 13b, and a screw 21 is screwed into the substrate 12 through the screw hole 13d to thereby attach the outer frame member 13 to the substrate 12.
It is detachably fixed to. The outer frame member 13 is
It is not always necessary to attach to the entire outer periphery of the substrate 12,
The straight part is suitably attached to a long part. In the case where the gap is small, the outer end surface of the outer frame member has irregularities, or the curved surface, the outer end portion of the substrate 12 is provided with a taper that is inclined downward and inward so that the lower portion of the substrate 12 You may make it retreat to one.

The thin plate-shaped punched material 10 is connected to the support plate 1.
6 and the punching line L of the material sheet 1 placed on the lower die 7, the upper die substrate 3 projects from the upper die substrate 3 so as to be located substantially along the punching line. An L-shaped blank 11 is protruded.

As shown in FIG. 6, the punched material 10 has a buried portion 10a formed at the upper end thereof press-fitted into a mounting groove of the upper die substrate 3. A punching scrap contact surface at the lower end of the punching material 10 has a saw-like shape provided with a plurality of pressing portions 10b continuously and acutely protruding along the punching line L. In the present embodiment, the thickness of the punched material 10 is set to 1 mm, and the depth of the groove forming the pressing portion 10b is compared with the depth of the groove forming the pressing portion 11d of the punched material 11 described later. In this embodiment, the thickness is about 5 mm. The depth of the groove forming the pressing portion 10b is changed depending on the material of the material sheet.

As in the case of the blank 10, the blank 11 is pressed into the mounting groove formed in the upper substrate 3 by inserting the upper end embedded portion 11 b of the longitudinal axis 11 a into the mounting groove formed in the upper substrate 3. It is fixed with a slight gap on the outside of the side. The punched material 11
Is the lower horizontal portion 1 wider than the width H of the above-mentioned punched waste 1B.
A V-shaped groove extending along the punching line L is provided on the punching scrap contact surface 1c, and a plurality of pressing portions 11d projecting at an acute angle are provided. In the present embodiment, the depth of the groove forming the pressing portion 11d is about 2 mm.

Next, a description will be given of the action of the above-mentioned removal device for removing the punched chips 1B. First, as shown in FIG. 1, the material sheet 1 is placed on the arrangement surface 15 of the lower mold 7, and the material sheet 1
Is positioned at a substantially intermediate position between the outer end surface of the upper end horizontal portion 13a of the outer frame member 13 and the inner surfaces of the punched materials 10 and 11. In this state, the lower surface of the outer end of the blank 1B of the material sheet 1 overlaps the support plate 16 by the width h, and the blank 1B is supported by the support plate 16 from below.

Next, the substrate 3 of the upper die 2 is lowered. Due to the lowering of the upper die 2, the sheet pressing plate 6 comes into contact with the upper surface of the punched product 1A of the material sheet 1, and the material sheet 1 is positioned and sandwiched between the sheet pressing plate 6 and the arrangement surface 15, and thereafter. As shown in FIG. 7A, the pressing portions 10b and 11d of the blanks 10 and 11 come into contact with the upper surface of the blank 1B. At this time, since the lower surface of the blank 1B is supported by the support plate 16, the blank 1B is sandwiched between the support plate 16 and the blank 10.

By lowering the upper die 2 further from the above state, the support plate 16 gradually bends downward while supporting the punched chips 1B from below, as shown in FIG. 7B. On the other hand, since the lower surface of the blank 1B is supported by the support plate 16, the pressing force by the blanks 10 and 11 is applied.

Next, as shown in FIG. 7 (C), the large residual portion La is cut off, and the punched waste 1B is removed from the punched product 1.
A is separated from the support plate 16 and separated from the support plate 16. At this time, substantially simultaneously with the separation of the residual portion La, the support plate 1
The punching waste passes through the tip of No. 6 and the support plate 16 returns to the current state, and the support plate 16 is located above the punching waste 1B. Therefore, the separated blank 1B does not jump upward. In the lower die 7, the outer frame member 13 is attached to the outer periphery of the substrate 12, and the vertical plate portion 13c of the outer frame member 13 is retracted inward. I can do it.

As described above, according to the above-mentioned removal device, the punching line L formed on the material sheet 1 by the support plate 16 is formed.
Of the blank 1B at a position opposed to the remaining portion La of the blank 1b, the upper surface of the blank 1B is surely pressed even with the narrow blank 10 so that a load is applied to the remaining portion La. Can be given. Further, the pressing force can be applied to the entire width direction of the blank 1B by the lower horizontal portion 11c of the L-shaped blank 11. Furthermore, the punched material 10
The pressing portion 10b prevents the cutting waste 1B from sliding in the longitudinal direction along the punching line L, and the pressing portion 11d of the punching material 11 prevents the cutting waste 1B from sliding in the width direction. Can be done.

Therefore, the residual portion La formed by leaving a large portion is formed.
Can be surely cut off, and the punched waste 1B can be reliably pushed down from the punched product 1A to escape. Further, since the punching line L can be formed while leaving the residual portion La largely, even if the transport speed of the material sheet 1 is increased, the residual portion La is cut off by the wind pressure at the time of transport, and the punched waste 1B is cut. Can be prevented from remaining on the transport line,

When the upper die 2 is lowered to remove the cutting waste 1B from the outer periphery of the punched product 1A, the upper die 2 is raised.
The next material sheet 1 is placed on the arrangement surface 15, and the punched waste 1B is continuously removed. When the upper mold 2 is lifted, the air blows up from the gap between the punched materials 10 and 11 and the outer end surface of the outer frame member 13 of the lower mold 7 due to the negative pressure, as in the conventional case. The blank scrap 1B having a width rises. However, the support plate 16 protrudes from the gap, and the support plate 1
Since the gap between 6 and the outer end surface of the outer frame member 13 is narrower than the width H of the blank 1B, the blank 1B can be reliably prevented from entering between the upper and lower dies 2, 7.

As described above, according to the punching chip removing device of the present invention, the pressing force is reliably applied to the narrow width punching chip 1B, and the remaining portion La which is formed to be largely left is also reliably provided. Since the separation can be performed and the floating of the punched waste 1B can be prevented, the conveying speed to the upper and lower dies 2, 7 and the operating speed of the upper dies 2 are increased, so that the punched product 1A
Can be improved in productivity.

FIG. 8 shows a modification of the removal device according to the first embodiment of the present invention. In the removal device, a support plate 16 ′ protruding from the fixed base 14 of the lower die 7 is provided with the entire length of the punching line L. And a punched material protruding from the substrate 3 of the upper mold 2.
Only the thin blank 10 is used.

FIGS. 9 and 10 show a second embodiment. In the second embodiment, the substrate 12 of the lower die 7 and the fixing stand 14 are formed separately, and the lower die 7 shown in FIG. The connection is made using the support frame 25.

The support frame 25 includes a pair of X-direction support frames 25 -I fixed to the lower surface of the lower mold 7, and a pair of these support frames 25 -I.
-I, a pair of support frames 25-II in the Y direction fixed in the orthogonal direction to the lower surface of the support frame 25-I in the X direction. The fixing bases 14B on the left and right sides are fixed by -II.

These support frames 24-I and 24-II are shown in FIG.
The fixed base mounting portion 25b and the board mounting portion 25c are provided at a required interval from one side of the upper end of the flat frame portion 25a, and the fixed frame mounting portion is protruded from the other side of the lower end. 25d is projected. In addition, the fixed base mounting portion 2
At the upper end of the vertical frame portion 25a located between the base 5b and the substrate mounting portion 25c, a blade portion 25e having a substantially triangular cross section is protruded from the upper end of the vertical frame portion 25a. It extends over the inner end face. On the other hand, the material sheet 1 is provided with the punching line L at a position where it comes into contact with the blade portion 25e.

The device for removing punched chips in the paper punching apparatus of the present invention is not limited to the above-described configuration. For example, the support plate 16 may be formed such that the tip end portion has an arcuate shape. In addition, it may be formed in a wave shape in which the radius is continuous, and any shape may be used as long as the outer lower surface of the punching waste 1B can be securely supported from the outside.

[0042]

As is apparent from the above description, in the punching-out device for punching chips in the paper punching device according to the first aspect of the present invention, the distance between the outer end surface of the lower die on which the material sheet is placed and the clearance is set. A fixing plate is provided with a gap, and a support plate that protrudes from the fixing table to the lower surface of the punching dust of the material sheet and supports the punching dust is provided. Since it is more supported, the pressing force of the punched material can be reliably applied to the punched waste, and even a large remaining portion can be reliably separated. In addition, even if air blows up due to the negative pressure when the upper mold is raised, since the support plate protrudes toward the outer end surface of the lower mold, the punched chips that have fallen out of the upper mold are removed. It is possible to reliably prevent intrusion into the space. Therefore, by forming a punching line by enlarging the residual portion, it becomes possible to transport the material sheet between the upper and lower dies at a high speed, and it is possible to increase the operation speed of the upper die. The productivity of the punched product can be improved.

According to a second aspect of the present invention, the support plate projects along the outer end surface of the lower die at a required interval, and the remaining portion of the punching line formed on the material sheet by the support plate. It is designed to support the lower surface of the outer end of the punching waste at the position opposite to, so that the pressing force of the punched material can be reliably applied to the residual part, so even the large residual part can be cut off securely and the punched product It is possible to remove punching waste more. In addition, since the support plate has elasticity, it gradually bends due to the lowering of the upper die, and at the same time when the residual portion is broken, punched chips pass through the tip of the support plate, and the support plate returns to the current state and is punched. Since the support plate is located above the waste, it is possible to prevent the punched waste from jumping between the upper and lower dies.

According to the third aspect of the present invention, since a plurality of pressing portions which protrude at an acute angle are continuously provided on the thin plate-shaped punching material, the punching material can be pointed along the punching line. In the contact state, slippage can be prevented, and a pressing force can be reliably applied to the punched waste.

According to the fourth aspect of the present invention, the plurality of pressing portions formed at the lower horizontal portion of the wide L-shaped punched material prevent the punched chips from sliding in the width direction. The pressing force can be applied to the entire surface in the width direction of the punched waste.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an apparatus for removing punched chips in a paper container punching apparatus according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a positional relationship between a material sheet, a support plate, and a thin support plate.

FIG. 3 is a bottom view of the upper die.

FIG. 4 is a bottom view of the lower mold.

FIG. 5 is a perspective view of a main part of a lower mold.

FIG. 6 is a perspective view showing an L-shaped punched material and a thin plate-shaped punched material.

FIGS. 7A, 7B, and 7C are cross-sectional views illustrating a step of removing a material sheet by the removal device of the present invention.

FIG. 8 is a plan view showing a positional relationship among a material sheet, a support plate, and a thin punched material according to a modified example of the escape device of the first embodiment of the present invention.

FIG. 9 is a bottom view of the lower mold of the escape device of the second embodiment.

FIG. 10 is a perspective view showing a support frame for fixing a lower mold of the second embodiment.

FIG. 11 is a perspective view showing an example of a material sheet.

FIG. 12 is a partially enlarged plan view of the material sheet shown in FIG.

13A and 13B are cross-sectional views showing a conventional escape device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Material sheet 1A Punched product 1B Punched waste 2 Upper die 3 Upper die substrate 7 Lower die 10 Thin plate-shaped punched material 10b Pressing part 11 L-shaped punched material 11c Lower horizontal part 11d Pressing part 12 Lower die Substrate 14 Fixed base 16 Support plate L Punching line La Residual part Lb Cutting part

Claims (3)

(57) [Claims] 1. A material sheet provided with a punching line consisting of a cut portion and a residual portion along an outer peripheral edge of a punched product in a die cutting step in advance is placed between opposed upper and lower dies of a stripping device. Then, the upper die is moved closer to the lower die, the punched material of the material sheet is pushed down from the outer surface of the lower die by the punched material protruding from the substrate of the upper die, and the above-mentioned residual portion is cut off to thereby remove the punched waste. In a punching scrap removal device for separating the punched product from the punched product, facing the outer end surface of the lower die on which the material sheet is placed,
A support base for the support plate is provided at a wider interval than the punching waste, and a support plate having elasticity protruding from the inner end surface of the support base to the lower mold side is provided. A support plate is provided along the outer end surface of the lower mold at a required interval to abut the outer lower surface of the lower die, and at least a material sheet supported by the support plate is punched. The remaining portion is located on the line, and the punching material for the punching waste of the portion supported by the support plate is formed as a thin plate and protrudes from the upper die substrate along the punching line. Outer for punching waste in a paper container punching device. 2. The punching waste in a paper cutting machine according to claim 1, wherein said thin plate-shaped punching material has a saw-like shape in which a pressing portion projecting at an acute angle is continuously provided. Escape device. 3. The punched material to be attached to the upper die substrate is composed of the thin plate-shaped punched material and the L-shaped punched material.
The die-shaped punched material is provided with a wide lower end horizontal portion, and a plurality of pressing portions projecting at an acute angle are provided on a punch contact surface of the lower end horizontal portion. Item 3. A device for removing punched chips in the paper punching device according to Item 2.