JP2004130493A - Die structure of stripping device for automatic punching machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a die structure of a stripping device for an automatic punching machine capable of automatically removing paper powder and mustache-like chips adhering to an edge on the product side in a stripping operation. <P>SOLUTION: This die structure has a female die and a male die of the strip device for the automatic punching machine for punching a development plate of a paper box or the like from a paper plate having a cutting line of the development plate shape of the paper box or the like and for removing the punching chips. A plurality of brushing members are arranged at the peripheral edge of a stripping attachment of at least the male die. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a die structure of an automatic punching machine for stripping a development plate such as a paper box from a paper plate having a cut line of a development plate shape such as a paper box formed by punching and removing the debris.
[0002]
[Prior art]
Automatic punching machine such as paperboard and corrugated box is a kind of transfer machine, and each process of paper feeding → punching → dropping (full circumference strip, partial strip) → counting → discharge is performed by one machine. Therefore, the punching process is a vertical operation type shearing process. In this shearing method, a material is carried between a cutting tool and a processing pedestal (cutting plate), and is pressed and punched until the cutting tool and the processing pedestal come into contact with each other. As a result, the tip of the blade comes into contact with the processing pedestal each time the punching process is repeated, which promotes wear of the tip.
[0003]
The abrasion of the cutting edge in the above-described shearing process results in the generation of a fine area at the tip of the cutting edge, which generates paper dust and whisker-like debris from the processed material during the punching process. In recent years, in the production control of various products, the incorporation and adhesion of fine debris is not allowed, so it is necessary to remove such paper dust and whiskers so that they do not adhere to the box material or enter the box. There is.
[0004]
However, these paper dusts and whiskers generated during the shearing process are present in the material (paperboard, cardboard box, etc.) from the start of punching to the end of punching, and are not exposed on the surface of the product. The paper dust and whiskers appear in the process of separating the product and outer swarf in the entire stripping process in the process of feeding → punching → whole strip → number of sheets → discharging in the punching machine I do. And since these fine dusts are lightweight, they adhere to the product side edge and the edge of the outer scraps due to electrostatic action, and even if a dust absorbing device or the like is installed in the punching process or the process section of the entire circumference strip. , Cannot be reliably sucked and discharged. Conventionally, there is no suitable means for removing these fine debris, and the peripheral edge of a high pile of products has been manually removed by wiping with a broom or the like.
[0005]
In the automatic punching machine as described above, a stripping device, such as a paper box, is punched from a paper plate having a cut line in the shape of a spreading plate, and a stripping device for removing the chippings is provided with a female type and a male type. In this case, it is ideal that the female type fits the male type with no gap. However, there is an error in the mounting position when setting the female type and the male type in the strip device, and There is a positioning error when positioning the paper board, or there is a warpage of the paper board, so if the female type is fitted with the male type with no gap, there is a disadvantage that the paper board will bite when punching the paper board. is there. For this reason, a slight gap (usually about 3 mm to 4 mm) is provided between the female type and the male type.
[0006]
In this case, the female type is usually formed to be smaller by about 1.5 mm to 2 mm than the size of the development plate to be punched, while the male type is formed to be larger by about 1.5 mm to 2 mm. Further, from the relation of the operation stroke of the stripping device, the thickness of the female type is set to about 9 mm to 12 mm, and the thickness of the male type is set to about 50 mm.
[0007]
We have previously proposed a method of manufacturing the above-described female and male strip devices with high precision and without wasting material (see Patent Document 1).
[0008]
[Patent Document 1]
Japanese Patent Publication No. 2-17318.
[0009]
[Problems to be solved by the invention]
As described above, paper dust and whiskers generated in the entire circumference stripping process by the automatic punching machine, even if a dust suction device is installed around the process section, the paper dust and whiskers are electrostatically adsorbed. It cannot be reliably removed.
[0010]
In addition, as in the past, when removing paper dust, whiskers, etc., in the removal operation of wiping the edge of the product with a broom or the like while the product is stacked, dust or the like scatters around, resulting in a work environment. Of course, this is not preferred, and the process is extremely inefficient.
[0011]
SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic punching machine capable of eliminating the above-mentioned conventional disadvantages and automatically removing paper dust and whiskers adhering to an edge on a product side during a stripping operation during a stripping process. An object of the present invention is to provide a mold structure of a strip device.
[0012]
This mold structure can be easily and easily adopted by adopting the female type and the female type manufactured by the method of manufacturing the female type and the male type of the stripping device for the automatic punching machine described in Patent Document 1 proposed earlier. It can be realized reliably.
[0013]
[Means for Solving the Problems]
The mold structure of the stripping device for an automatic punching machine according to the present invention is such that a developing plate such as a paper box is punched from a paper plate having a cut line of a developing plate shape such as a paper box, and the stripping device for the automatic punching machine excluding the chippings. A mold structure comprising a female type and a male type, wherein a plurality of brushing members are arranged at least on a peripheral portion of the male type strip attachment (claim 1).
[0014]
In this case, it is desirable that the plurality of brushing members be disposed all around at intervals, and that brushing members having different shapes can be combined and disposed (claims 2 and 3). The brushing member can be arranged at both the female peripheral edge and the male strip attachment at different positions.
[0015]
The brushing member is preferably a beard brush, and the form and shape of the beard brush are desirably a united beard brush or a liner brush. An arrangement recess is provided in the peripheral portion of the female type or the peripheral portion of the male strip attachment on which the beard brush is to be arranged, and the bottom end of the arrangement concave portion is formed in a curved shape to form a male. When the mold and the female mold are fitted, it is desirable that the beard brush protruding from the bottom end is bent without being bent, thereby preventing the beard brush from being bent or worn due to bending. 6).
[0016]
The type of the strip device is desirably manufactured by a female or male manufacturing method described in Patent Document 1. That is, a female die manufactured by cutting a plate material such as a veneer plate by a predetermined size smaller than the spread plate by a laser beam processing machine, and a male side strip formed by cutting the plate material by a predetermined size larger than the spread plate. The attachment is constituted by a male type manufactured by fixing it on a substrate via a spacer, and the brushing member is installed on the female type and / or the male type (claim 7).
[0017]
According to the structure in which a plurality of brushing members are arranged at least on the peripheral edge of the male strip attachment as in the present invention, the paper dust that appears in the process of being separated into the product and the peripheral debris in the entire peripheral stripping process Even if the whiskers are electrostatically adhered to the product edge, they are surely swept off by the brushing member, and there is no risk of adhering to the product or mixing into the assembled box.
[0018]
In the case where the plurality of brushing members are arranged around the entire circumference at intervals, it is possible to more reliably sweep out paper dust and whiskers, and by arranging brushing members having different shapes in combination, The brushing member on the female side can be adapted to the shape and properties of paper dust and whisker-like debris. However, even if the margin of the blank at the time of punching is small, it plays the role of keeping the blank (cardboard or corrugated cardboard) flat until the strip operation starts. The stripped debris can be dropped in a nearly horizontal state in the longitudinal direction by uniformly contacting the punched product.
[0019]
Using a whisker brush as the brushing member, a binding whisker brush or a liner brush, the bottom end of the disposing concave portion formed on the peripheral portion of the female type or the peripheral portion of the male type strip attachment is formed in a curved shape. If the beard brush is arranged in the disposing recess, the beard brush protruding from the front end of the bottom surface is curved and does not bend at a right angle when the male type and the female type are fitted, so that the beard brush is prevented from being bent and worn. be able to.
[0020]
A female mold manufactured by cutting a plate material such as a veneer plate by a predetermined size smaller than the spread plate by a laser beam processing machine, and a mold of the strip device, and by cutting the plate material by a predetermined size larger than the spread plate. And a male type manufactured by fixing the male type basic guide on a substrate via a spacer, and the brushing member is installed on the female type and / or the male type. Since the female and male types have uniform gaps to be fitted to each other, the length of the brushing member can be easily set, and a uniform brushing effect can be expected.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a mold structure of a stripping device for an automatic punching machine according to the present invention will be described with reference to the drawings. In this embodiment, a female type and a male type are described in Patent Document 1 (Japanese Patent Publication No. 2-17318). An example of using a device manufactured by the manufacturing method described above will be described.
[0022]
1 to 4 show a manufacturing process of a female type and a male type. First, the graphic information of the development board of the paper box is input to a computer, the computer performs an inward / outward offset processing on the graphic, and controls the laser beam processing machine with the graphic information thus processed, As shown in FIG. 1, the central portion of the plywood 11 having a thickness of 12 mm is cut into a developed plate shape that is smaller by 1.5 mm to 2 mm than the size of the developed plate 21. Next, as shown in FIG. 2, the central portion of the plywood 11 is cut into a developed plate shape that is 1.5 mm to 2 mm larger than the size of the developed plate. As shown in FIG. 3, the inner part of the plywood 11 is the female type 1 as it is, and the outer part is the male type strip attachment 12.
[0023]
The male strip attachment 12 is fixed to a 16 mm-thick plywood plate 13 on which a figure of a developed plate is drawn by an automatic drafting machine with a spacer 15 interposed therebetween as shown in FIG. You. At this time, the strip attachment 12 is fixed so as to be apart from the marking line 14 of the plywood 13 by 1.5 mm to 2 mm outside. There is a gap of about 3 mm to 4 mm between the female mold 1 and the male mold 2 manufactured in this way, and this gap is formed uniformly. FIG. 5 is a male side view.
[0024]
Using the female device 1 and the male device 2 of the strip device manufactured as described above, a plurality of brushing members are provided below the peripheral portion 12a of the strip attachment 12 in the male device 2, as shown in FIGS. 5 is arranged. The brushing member 5 is not particularly limited in its material, form, shape, and the like, but in the embodiment, a beard brush is used, and in the examples of FIGS. 6 and 7, a bundled beard in which the base end of a beard bundle 6a is bundled with a cylindrical piece 6b. A brush 6 is used. However, as shown in FIG. 11, the beard brush may be a liner brush in which a large number of beard bundles 7a protrude from the side edges of the plate-like substrate 7b at predetermined intervals, and brushing members of various shapes are appropriately combined. Can also be placed.
[0025]
6 and 7, the male mold 2 is shown in an inverted state so that the arrangement form of the brushing member 5 can be understood. A recess 3 for arranging the brushing member 5 is formed below the peripheral portion 12a of the strip attachment 12. The binding whisker brush 6 is arranged in the arrangement concave portion 3 such that the whisker bundle 6a protrudes from the edge. The distal end of the bottom surface 4a of the recess 3 is formed into a curved surface 4b so that the beard bundle 6a does not bend at a right angle during the strip operation. This can prevent the beard brush from being bent or worn. The brushing member 5 is exchangeably fixed by a fixing member (not shown) or the like.
[0026]
As shown in FIG. 8, in the strip operation, a paper board 20 having a cut line in the form of a developed plate such as a paper box is sent onto the female mold 1, and the male mold 2 descends and punches out the outer debris pieces 20a. A deployment plate 21 is obtained. At this time, the paper dust and whisker-like debris 20b generated in the step of forming the cut line of the spread plate shape appear in a state of being electrostatically attached to the edge of the spread plate 21. In the process of descending, the brushing member 5 (in the embodiment, the beard bundle 6a) provided on the male-type strip attachment 12 strokes the edge 21a of the developing plate 21, whereby the paper dust and the whiskers 20b are wiped. , These fall.
[0027]
FIG. 9 is a cross-sectional view showing an embodiment in which the brushing member 5 is also arranged on the peripheral portion 1a of the female die 1. In this case, when the brushing member 5 is arranged on the upper side of the peripheral portion 1a of the female mold 1 as shown in FIG. 9, as shown in FIG. Even when the strip 20a is small, the material can be held horizontally until the strip is started, and the male mold 2 at the time of the entire circumference strip uniformly contacts the material, and the stripped scrap piece 20a is elongated. The book is dropped in a direction almost horizontal.
[0028]
In a stripping device of an automatic punching machine, it is extremely important to maintain the horizontal state of the material at the time of the above-mentioned dropping of a sheet. When the shape of the debris is not straight, the cut-out portion is not uniformly pressed by the male-type strip attachment 12, so that the debris is scattered in a different direction. This also causes the underbar supporting the female mold 1 to contact or hang, causing local debris to be jammed when the book is dropped. Then, the once clogged debris does not fall naturally, but collides with the next conveyed product, resulting in automatic stop of the machine. Therefore, as one of the most important issues of the bookbinding system, how to drop the whole scraps in a state where they are leveled uniformly depends on whether the operating speed of the automatic punching machine can be increased. As such, it occupies a significant weight in technical issues.
[0029]
Although it has been explained that the entire piece of scrap is dropped in a state of being evenly leveled, especially in corrugated board processing, there are longitudinal and transverse eyes due to the structure of the paper material, and the flow direction of the corrugated cardboard (along the corrugation peaks and valleys) Slightly different from the case where the punching is performed at right angles to the direction perpendicular to the direction in which the punching is performed. In other words, when punching at right angles to the flow direction, it can be easily released, but when punching parallel to the step, if the punching blade and the step do not constitute any parallel, corrugation The cutting blade enters the mountain and the valley, causing a slight difference in resistance when the book is dropped, and the scraps are rotated to make it difficult to evenly and horizontally drop the scraps, which causes lifting.
[0030]
Further, in the case of a scrap piece having a punching blade parallel to the step direction, in the present invention, since the brushing member 5 is provided on the periphery of the female mold 1, the punched scrap piece is the female mold 1. Is supported by the brushing member 5 and is not rotated due to a difference in resistance between the left and right sides of the scraped piece, and can be easily dropped by being pushed down by the strip attachment 12 of the male mold 2.
[0031]
【The invention's effect】
According to the mold structure of the stripping device for an automatic punching machine according to the present invention, in the device according to the first aspect, since a plurality of brushing members are arranged at least on the peripheral edge of the male strip attachment, the entire periphery is provided. Even if paper dust or whisker-like debris that appears during the process of being separated into product and peripheral debris in the stripping process is electrostatically adhered to the product edge, it is reliably wiped off by the brushing member and adhered to the product or assembled There is no risk of being mixed in the box. Further, it is possible to eliminate an operation step of manually sweeping out the paper dust and whiskers.
[0032]
In this case, when the plurality of brushing members are arranged around the entire circumference at intervals, paper dust and whisker-like debris can be more reliably wiped off, and brushing members having different shapes are arranged in combination. This makes it possible to correspond to the shape, properties, etc. of paper dust and whisker-like waste, and when a plurality of brushing members are arranged in both female and male types at different positions, the female type side The brushing member serves to keep the material (paperboard or corrugated cardboard) flat until the stripping operation is started, even if the margin of the material at the time of punching is small. The male mold uniformly contacts the punched product, and the stripped scrap pieces can be dropped in a state that is nearly horizontal in the longitudinal direction.
[0033]
Using a whisker brush as the brushing member, a binding whisker brush or a liner brush, the bottom end of the disposing concave portion formed on the peripheral portion of the female type or the peripheral portion of the male type strip attachment is formed in a curved shape. If the beard brush is arranged in the disposing recess, the beard brush protruding from the front end of the bottom surface is curved and does not bend at a right angle when the male type and the female type are fitted, so that the beard brush is prevented from being bent and worn. be able to.
[0034]
Further, the mold of the stripping device, a female die manufactured by cutting a plate material such as a veneer plate by a predetermined size smaller than the spread plate by a laser beam processing machine, and cutting the plate material by a predetermined size larger than the spread plate. A male base guide manufactured by fixing the male base guide formed on the substrate via a spacer, and the brushing member is installed on the female type and / or the male type. Since these female type and male type have uniform gaps to be fitted to each other, the length of the brushing member can be easily set, and a uniform brushing effect can be expected.
[Brief description of the drawings]
FIG. 1 is a plan view of a plate material (plywood) for explaining a manufacturing process of a female die and a male die used for a die structure of a strip device for an automatic punching machine according to the present invention.
FIG. 2 is a plan view showing a cutting line by the laser beam processing machine.
FIG. 3 is a plan view of a female mold.
FIG. 4 is a plan view of a male type.
FIG. 5 is a side view of a male type.
FIG. 6 is a perspective view showing a state in which a brushing member is arranged on an outer peripheral edge of a male strip attachment, in a state where the male type is inverted.
FIG. 7 is a cross-sectional view of a main part showing a state in which a brushing member is arranged on a peripheral edge of a male strip attachment.
FIG. 8 is a side view of a main part showing a state during a strip operation.
FIG. 9 is a partial cross-sectional view showing a form in which a brushing member is also arranged on an outer peripheral edge of a female mold.
FIG. 10 is a side view showing a state in which an outer peripheral portion of the paper board, which is to be scrap, is supported by a brushing member arranged in a female shape.
FIG. 11 is a perspective view showing another configuration example of a beard brush as a brushing member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Female type 2 Male type 3 Arrangement concave part 4a Bottom surface 4b of arrangement concave part 5 Curved surface 5 Brushing member 6 Binding whisker brush 6a Beard bun 6a
6b Tube piece 11 Veneer board 12 Strip attachment 13 Veneer board 14 Marking line 15 Spacer 20 Paper board 20a Scrap pieces 20b Whiskers 21 Deployment board

Claims (7)

Punching a development plate such as a paper box from a paper plate containing a cutting line of a development plate shape such as a paper box, a female type of an automatic punching machine stripping machine for removing the scraps, a mold structure composed of a male type, at least the said A mold structure for a strip device for an automatic punching machine, wherein a plurality of brushing members are arranged on a peripheral portion of a male strip attachment. 2. The die structure for an automatic punching machine according to claim 1, wherein a plurality of brushing members are arranged around the entire circumference at intervals. 3. The die structure for an automatic punching machine according to claim 1, wherein brushing members having different shapes are arranged in combination. The automatic punching machine according to any one of claims 1 to 3, wherein the plurality of brushing members are arranged on both the peripheral portion of the female type and the peripheral portion of the male type strip attachment at different positions. Type structure of stripping device. The brushing member is a beard brush, and an arrangement concave portion is provided on a peripheral portion of a female type or a peripheral portion of a male strip attachment where the beard brush is to be disposed. The mold structure of the strip device for an automatic punching machine according to any one of the above. The bottom end of the placement concave portion is formed in a curved surface, and when the male and female types are fitted, the beard brush projecting from the bottom end is prevented from being bent. A mold structure of the stripping device for an automatic punching machine according to claim 5. A die of a stripping device is produced by cutting a plate material such as a plywood plate by a laser beam processing machine to a predetermined size smaller than the spread plate, and a female mold manufactured by cutting the plate material to a predetermined size larger than the spread plate. The strip device for an automatic punching machine according to any one of claims 1 to 6, characterized in that the strip device is configured by fixing a male side strip attachment on a substrate via a spacer. Type structure.

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