JPH06297392A - Discharge device for punching-out chip in paper article punching-out device - Google Patents

Abstract

PURPOSE:To surely separate a residual part by forming a plurality of projecting for pressing-cutting the residual part of a punching-out line, as for the constitution in which a punched-out material sheet is inserted between a pair of molds and the punching-line is punched out by the projection on the upper mold side, and the punching-out chip is separated. CONSTITUTION:A material sheet 10 is transferred and placed onto the upper surface of a lower mold basic plate 12, and a punching-out line L is positioned at about the intermediate position between a basic plate outer edge surface 12a and the inner surface of a projection 15. Then, an upper mold basic plate 11 is lowered, and the first projection 13 of the projection 15 is brought into contact with the upper surface of the punching-out chip 17 of the sheet member 10, and the upper surface is pressed, and bent downward from the outer edge, having a residual part 20 as fulcrum. Accordingly, the cut surface 20a of the residual part 20 is turned and shifted in the horizontal direction. The punching-out chip 17 in a bent state is not inclined inside, and held downward in the vertical direction, since a projection part 16 is formed on the outer edge surface of the lower side basic plate 12, and the punching-out chip 17 is separated from a punched-out product 18 through the succeeding lowering of the second projection 14.

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 punching scraps from a paper punching device, and more specifically, it inserts a pre-punched material sheet between a pair of dies and projects it from one of the dies. The present invention relates to a device for punching a punching line of a sheet with a projection and removing punching chips.

[0002]

2. Description of the Related Art Conventionally, in this type of punching scrap removal device,
In the previous step, for example, as shown in FIG. 11, the punching line L around the punched product 2 which is a finished product is cut from the material sheet 1 on which the punching line L is formed by performing the required punching.
Various devices are provided for removing the punching scraps 3 partitioned by.

As shown in FIG. 12, the punching line L that is die-cut in the above-mentioned pre-process has a so-called perforation shape, and a seam (hereinafter referred to as a residual portion 4) is formed at a cut portion at a required interval.
(Referred to as) is formed.

As a device for removing the die-cut material sheet, for example, a device shown in FIG. 13 has been conventionally provided. In this apparatus, the punching line L is formed on the substrate 6 of the upper die 5.
While the projection 7 is projected downward along the outside with a smaller gap, the substrate 9 having a size slightly smaller than the outer shape of the punched product is fixed to the lower die 8 and the upper die 5 is lowered to project. By punching out the punching scrap 3 by means of 7, the residual portion 4 is separated and the punching scrap 3 is detached as shown in FIG.

[0005]

As described above, in the external removal device, the surface of the portion which becomes the punching waste 3 is pushed downward by the projection 7 and the material sheet 1 is bent along the punching line L to form the substrate. The residual part 4, which is connected to the part of the product 2 supported by 9, is so torn apart. In this way, when the protrusion 7 is used to bend and separate the portion that will become the punching waste 3 with a large load at the time of detaching, the protrusion 7 is positioned slightly outward from the position just above the punching line L. Since it is preferable to position the protrusion 7 at the position, the protrusion 7 is arranged with a gap S2 from the punching line L as described above. However, when the width W1 of the punching scrap 3 is wide, a large load can be applied, and the punching scrap 3 can be reliably removed by separating the residual portion 4.
When the width W1 of the punching waste 3 is small, a large load cannot be applied, and the residual portion 4 may not be cut off.

In addition, in the external device, in order to easily bend the punching scrap 3 along the punching line L, the projection 7 has the lower die 8.
Substrate 9 as described above so as not to collide with the substrate 9 of
The outer edge of the is punched inward from the punching line L with a gap S1. Therefore, the punching waste 3 refracted by the protrusion 7
As shown in FIG. 15, it is easy for the part of (4) to enter the gap S1 and tilt toward the substrate 9 side. In this way, when the tip is tilted, the contact area with the protrusion 7 is reduced, and the load by the protrusion 7 does not sufficiently act on the portion that becomes the punching scrap 3, and the separation at the residual portion 4 becomes more difficult. .

The present invention has been made in view of the above-mentioned problems, and in particular, an apparatus for improving the projection for pushing out a portion to be punched dust and separating it from the residual portion and surely removing it can be provided. It is intended to be provided. Another object of the present invention is to suppress the inclination of the punching scrap portion that occurs when the lower die substrate is retreated from the punching line to the punching side and escaped, so that the punching scraps can be removed more reliably.

[0008]

In order to solve the above problems, in the present invention, a punching line consisting of a cut portion and a residual portion is provided in advance in the material sheet in the die cutting step along the outer peripheral edge of the punched product. , The material sheet provided with the punching line is conveyed and placed between a pair of upper and lower dies facing each other of the removal device,
These upper and lower dies are moved in the proximity direction, and the projections provided on one die push out the punching scraps of the material sheet to separate the above-mentioned residual portion and separate the punching scraps from the punching product. In the apparatus, a first protrusion that is arranged outside the punching line at a predetermined distance from the punching line, contacts the surface of the punching dust and presses it, and bends the punching dust with the residual portion as a fulcrum. , Is arranged on the punching line side of the first projection, and its tip is arranged with a required step difference from the first projection, and contacts the cutting surface that is bent by the first projection and displaced from the vertical direction to the horizontal direction. A second projection to be formed, the first projection bends the punching waste, and the refraction causes the cutting surface to appear horizontally, and then the second projection contacts the cutting surface to push it down to separate the remaining portion. Punching in the paper machine punching device configured There is provided a outer detachment device.

The first protrusion and the second protrusion may be integrally formed, and the lower portion may be branched to provide the first protrusion and the second protrusion. Alternatively, the first protrusion and the second protrusion may be formed separately.

The above-mentioned projection is provided downward on the upper die substrate,
When the first protrusion and the second protrusion are integrally formed, a metal plate having a vertically long rectangular cross section for fixing the upper end to the upper die substrate is formed by notching the side portion on the punching line side of the lower portion. The lower end surface of the protrusion is provided above the lower end surface of the first protrusion with a step. At that time, the lower end surface of the second projection is perpendicular to the vertical side surface of the first projection on the punching line side or inclined upward from the tip.

When the first protrusion and the second protrusion are formed separately, they are made of metal plates each having a narrow cross section, and the upper end is fixed to the substrate with a required space and the lower end is positioned with a step. ing. It should be noted that it is preferable that a spacer is interposed in the gap formed between the first protrusion and the second protrusion to prevent foreign matter from entering.

Of the above projections, the first projections are provided along the entire punching line, but the second projections may be provided only at required locations, for example, the remaining portion of the material sheet and its vicinity. Needless to say, the second protrusion may be provided along with the first protrusion along the entire punching line.

On the other type of substrate not provided with the protrusions, the outer edge thereof is set to be slightly smaller than the punching line (outer shape of the punched product), and the required portion, for example, the material sheet A protruding portion that protrudes to the punching line is provided on the outer end surface at a position corresponding to the residual portion, and refracted punching waste is prevented from being restricted by the protruding portion and inclining inward from the punching line. .

The projecting portion may have bolts or screws fixed to the outer end surface of the substrate, and the head portion thereof may be the projecting portion. Alternatively, the protrusion may be welded. Further, a plate member that extends from the rear surface side of the substrate and has its tip bent to project to the outer end surface of the substrate may be attached to form the above-mentioned protruding portion. At that time, it is preferable that the portion protruding to the outer end surface of the substrate is a spring piece. Further, it is preferable that the protruding portion is inclined or curved so that the diameter thereof is reduced toward the substrate side which is the material sheet mounting surface.

The projection consisting of the first projection and the second projection provided along the punching line is a projection for the contour line which is arranged for removing external punching scraps outside the contour line of the punched product. It can be preferably used. However, the present invention is not limited to the above-mentioned outer shape line, and can be used as a projection for an inner shape line which is arranged to remove internal punching scraps located on the inner side of the punched product.

[0016]

As described above, since the first projection and the second projection are provided as the projections projecting on one of the substrates in order to push out the punching dust, the projections are moved to the other substrate side during the operation. First, the surface of the punching dust is pushed by the first protrusion, and the punching dust is bent around the punching line as a fulcrum. Then,
The second projection comes into contact with the cut surface that is bent and oriented in the horizontal direction, and pushes the cut surface. Therefore, the remaining portion supported by the other substrate is torn off and the punching dust is separated from the product portion.

During the above operation, the punching scraps refracted by the first protrusions come into contact with the protrusions provided on the outer end surface of the other substrate, the inclination toward the substrate side (inward) is blocked, and the vertical direction Retained. Therefore, the cut surface that has been bent and displaced horizontally is stably held in the horizontal direction without tilting, and the second protrusion surely contacts the cut surface to press the cut surface to apply a load to the residual portion. It can be pushed down.

[0018]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 5 show a first embodiment, and FIGS. 1 and 2 show an upper mold substrate 11, a lower mold substrate 12 and a material sheet 1.
FIG. 3 is an explanatory diagram showing a relative positional relationship between a punching line L of 0, a protrusion 15 including a first protrusion 13 and a second protrusion 14 attached to the substrate 11, and a protrusion 16 attached to the substrate 12.

The punching product 18 formed by removing the punching scraps 17 from the material sheet 10 has a simple rectangular shape for the sake of simplicity, and is completely cut along the outer edge of the rectangular shape by cutting in the previous step. A punching line L including a cut portion 19 that has been cut and a residual portion 20 that is partially continuous is provided.

Similar to FIGS. 13 and 14, the upper die side substrate 11 is moved up and down by a driving means (not shown), while the lower die side substrate 12 is fixed at a predetermined position. Therefore, the upper mold substrate 11 is lowered toward the lower mold substrate 12 so as to come close to the lower mold substrate 12, and is raised so as to be separated from each other. The upper mold substrate 11 is lowered when the punching scraps are detached. I am trying to let you.

On the substrate 11 on the upper die side, a projection 15 made of a metal material is provided so as to project downward along the punching line L, and the inner surface 15a of the projection 15 is separated from the punching line L by a predetermined gap S1. In the embodiment, it is located 2 mm apart and is located outside. The gap S1 is not more than the thickness T of the material sheet 10. As shown in the figure, the protrusion 15 branches off from the lower portion of the upper base portion 15b having a required thickness to form the first protrusion 13 and the second protrusion 1.
4 is provided. The second protrusion 1 located on the punching line L side
The lower end surface 14a of No. 4 is positioned above the lower end surface 13a of the outer first projection 13 with a height H, and has the shape in which the first projection 13 hangs outside the second projection 14. That is, the lower end surface 13a of the first protrusion 13 and the lower end surface 14a of the second protrusion 14
And a step of height H is provided between and.

The lower end surface 14a of the second projection 14 is inclined upward from the tip on the punching line L side toward the first projection 13 side as shown in the drawing so that it is between the inner surface 13b of the first projection 13 and the lower surface. A void 22 having a V-shaped cross section is formed in the.

The width W2 of the lower end surface 14a of the second protrusion 14
When the cut portion 19 or the residual portion 20 of the material sheet 10 is bent and the cut surfaces 19a, 20a are displaced in the upward horizontal direction, the lower end surface 14a contacts the cut surfaces 19a, 20a,
Moreover, the second projection 13 has the punching scrap 1 outside the punching line L.
The size is set so as to contact the surface of No. 7. Therefore, the second
The width W2 of the lower end surface 14a of the protrusion 14 becomes large when the thickness T of the material sheet 10 is large, and becomes small when the thickness T is small and the material sheet 10 is thin.

The outer end surface 12a of the substrate 12 on the lower die side is made smaller than the punching line L by a distance and is allowed to escape inward at a distance S2 (2 mm in this embodiment) from the punching line L.
A punching line L for the material sheet 10 is provided on the outer end surface 12a.
Head 21a of the screw 21 at a position facing the remaining portion 20 of
The projecting portion 16 composed of is projected. The screw 21 is attached by screwing it into the outer end surface 12a. The screw head 21a forming the protruding portion 16 has a substantially hemispherical shape, and its apex 21b protrudes to the punching line L.

Next, the external removal action of the punching scraps 17 by the external removal device will be described with reference to FIGS. 5 (A) to 5 (E). First,
As shown in (A), the material sheet 10 is conveyed and placed on the upper surface of the lower die substrate 12, and the punching line L is placed at a substantially intermediate position between the outer end surface 12 a of the substrate 12 and the inner surface of the protrusion 15. Position. Then, the upper die substrate 11 is lowered as shown in FIG. When the substrate 11 descends, first, the lower end surface 13a of the first protrusion 13 protruding below the protrusion 15 is moved to the sheet member 1
It comes into contact with the upper surface of the punching waste 17 of 0. As the first protrusion 13 descends, the punching waste 17 is pressed from above and bent downward from the outer end with the residual portion 20 as a fulcrum.

By the protrusion by the first protrusion 13, the punching waste 17 is gradually bent downward at a right angle to the portion of the punched product 18 on the substrate 12, as shown in FIG. Therefore, the remaining portion 20 (the cutting portion 19
The cut surface 20a of (including) also rotates and is displaced in the horizontal direction.

Punching waste 17 bent by the first protrusion 13
Does not incline inward because the projection 16 is provided on the outer end surface of the lower substrate 12, and thus is held downward in the vertical direction as shown in FIG.
The a and 19a can be held in an upward horizontal state.

When the first protrusion 13 descends, the first protrusion 13
Since the second protrusion 14 integrated with the lower part also descends and the lower end surface 14a is located above, the cut surfaces 20a, 1
After 9a is horizontally displaced by the first protrusion 13,
The lower end surface 14a of the second protrusion 14 can be brought into contact with the cut surfaces 20a and 19a. In addition, the lower end surface 1 of the second protrusion 14
Since the gap 22 having a V-shaped cross section is formed by inclining the cutting surface 4a, the cut surfaces 20a and 19a are easily locked and are not easily removed after locking.

In the state shown in (D) above, the second protrusion 1 is further added.
When 4 is lowered, the cut surfaces 20a and 19a are pushed down by the second protrusions 14, and as shown in (E), the residual portion 20 is surely pushed off to separate the punched product 18 and the punching waste 17. It can be done. At the time of this operation from (D) to (E), the bent punching dust 17 causes the protrusion 16 and the first protrusion 1
Since it is sandwiched between the side surface of No. 3 and held substantially vertically without tilting, the cutting planes 20a, 19a in the horizontal direction are formed by the second projections 14.
It is pushed down by the lower end surface 14a of the
Can be reliably separated.

The present invention is not limited to the above embodiment, but the projection 1
The shape of 5 may be the shape shown in FIGS. 6 and 7. The modification of the protrusion 15 shown in FIG. 6 is the lower end surface 1 of the second protrusion 14.
4a 'is made horizontal without tilting upward toward the first projection 13 side. As described above, it is preferable that the shape of the lower end surface of the second protrusion 14 be in a state of being inclined upward from the horizontal position shown in FIG. 6 as shown in the first embodiment. The first protrusion 1
Inclining downward toward the third side is not preferable because the lower end surface of the second protrusion 14 makes it easier for the cut surface turned by the first protrusion 13 to be in a horizontal state than in a horizontal state.

Further, as shown in FIG. 7, the second protrusion 14
Is the residual portion 20 provided on the punching line L of the material sheet 10.
You may provide only in the part which opposes. That is, the first protrusion 1
3, the second protrusion 14 may be projected at a required interval.

FIG. 8 shows a second embodiment of the present invention, in which the projections composed of the first projections and the second projections are formed separately. That is, the first protrusions 13 'and the second protrusions 14' are each formed of a narrow metal flat plate, and their upper ends are fixed to the upper mold substrate 11 so as to protrude downward at a required interval. The height of the first protrusion 13 'is higher than that of the second protrusion 14' by H, so that the lower end surface 1 of the first protrusion 13 'is used.
3a ′ is located below the lower end surface 14a ″ of the second protrusion 14 ′ by a height H.

The first protrusions 13 'are arranged along the entire length of the punching line L, while the second protrusions 14' are provided at required positions.
That is, it is arranged only at a position facing the remaining portion of the punching line L and its vicinity. Needless to say, they may be arranged along the entire length of the punching line L, like the first protrusions 13 '.

Since a gap is created between the first protrusion 13 'and the second protrusion 14', a spacer 26 made of rubber or the like is inserted in this gap to prevent foreign matter such as dust from entering the gap. Is preferred.

In the second embodiment, the spring plate 27 is used as the protrusion 16 'provided on the outer end surface of the lower die substrate 12. That is, a curved spring portion 27a is provided at one end of the metal spring plate 27 so as to project upward, the spring plate 27 is fixed to the back surface of the substrate 12, and the spring portion 27a is projected at the outer end surface 12a. It is arranged.

Since the operation and effect of the second embodiment is similar to that of the first embodiment, the description thereof will be omitted.

As the protrusion 16 provided on the outer end surface 12a of the lower substrate 12, an L-shaped frame member 28 is used as shown in FIG. It may be attached over 12a. At this time, it is preferable that the upper end surface 28a of the frame member 28 be tapered.
Further, as shown in (B), the projecting piece 30 may be welded to the flat plate-shaped frame member 29, and the projecting piece 30 may be projected to the outer end surface 12a.

Further, in the above-mentioned embodiment, the protrusions consisting of the first protrusions and the second protrusions are adopted for punching the outline line of the punched product, but as shown in FIG. In the case where there is a punching portion inside the ', the projection composed of the first projection and the second projection can be used also for punching out the internal punching scrap 17'.

[0039]

As is apparent from the above description, according to the punching-dust removing apparatus of the present invention, the punching dust is pushed down along the punching line of the material sheet, and the residual portion of the punching line is left. A first protrusion and a second protrusion are provided as a protrusion for pushing down the punch, and the first protrusion bends the punching scraps to expose the cutting surface of the punching line in the horizontal direction. Since the two protrusions are brought into contact with each other and pushed down, it is possible to reliably separate the residual portion and separate the punching scraps from the punched product to be detached.

That is, since the conventional projection has a structure in which the remaining portion is pushed down only by contacting the surface side of the punching scrap and bending the punching scrap, especially when the width of the punching scrap is narrow. , The load from the protrusions was not sufficient and the remaining part could not be pushed off smoothly. On the contrary,
According to the present invention, the first projection adheres to the surface side of the punching scrap to bend the punching scrap, and the cutting surface that appears in the horizontal direction is pushed down by the second projection by the refraction, so that the second projection pushes down the cutting scrap securely. It is possible to load and press on.

Further, since the protruding portion is provided on the outer end surface of the lower die substrate which is escaped inward from the punching line, while the surface of the punching scrap is pushed down and bent by the first protrusion, and While pushing down the cut surface by the two protrusions, the bent scraps do not incline, hold it in the vertical direction, and push down the cut surface by the second protrusion to reliably cut off the residual part. It has various advantages.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a positional relationship of the entire external removal device in a first embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is an enlarged sectional view of a main part of the first embodiment.

FIG. 4 is a perspective view of a protrusion of the first embodiment.

5 (A) (B) (C) (D) (E) are drawings showing the operating state of the first embodiment.

FIG. 6 is a perspective view showing a modified example of a protrusion.

FIG. 7 is a perspective view showing another modified example of the protrusion.

FIG. 8 is a sectional view showing a second embodiment.

9 (A) and 9 (B) are schematic views showing a modified example of the protrusion provided on the substrate.

FIG. 10 is a plan view showing another material sheet for removing punching scraps according to the present invention.

FIG. 11 is a perspective view of a material sheet.

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

FIG. 13 is a cross-sectional view showing a conventional external removal device.

FIG. 14 is a cross-sectional view showing a state in which a conventional external device is operated.

FIG. 15 is a schematic view showing a problem of a conventional external device.

[Explanation of symbols]

 L punching line 10 material sheet 11 upper die substrate 12 lower die substrate 13 first protrusion 14 second protrusion 15 protrusion 16 protrusion portion 19 cutting portion 20 residual portion 20a cutting surface

Claims (5)

[Claims] 1. A punching line consisting of a cutting portion and a residual portion is previously provided on a material sheet along an outer peripheral edge of a punched product in a die cutting step, and the material sheet provided with the punching line is provided in an external device. It is placed between the upper and lower dies facing each other, and these upper and lower dies are moved in the proximity direction, the punching scraps of the material sheet are pushed down by the protrusions provided on one of the molds, and the above-mentioned residual portion is cut off to thereby punch the scraps. In the device for removing punching scraps for separating from the punching product, the protrusions are arranged outside the punching line with a required gap, and contact with the surface of the punching chips to press the residual portion. The first projection for refracting the punching scraps with the fulcrum as a fulcrum, and the first projection are arranged on the punching line side, and the tip of the first projection is provided with a required step, and the first projection is bent. Second protrusion that comes into contact with the cut surface that appears in the horizontal direction Striking 抜屑 outer detachment device according to have Shiki punching device provided. 2. The apparatus according to claim 1, wherein the first protrusion and the second protrusion are integrally formed, and the lower portion is branched to provide the first protrusion and the second protrusion. 3. The device according to claim 1, wherein the first protrusion and the second protrusion are formed separately. 4. The first protrusion is arranged along the entire circumference of the punching line, while the second protrusion is arranged at a position facing at least the remaining portion of the punching line. The apparatus according to item 1. 5. The other mold not provided with the projection has an outer end surface set to be slightly smaller than the punching line, and a projecting portion projecting up to the punching line is provided on the outer end surface at a required location. Device according to any one of the preceding claims.