JP4032090B2 - Mold structure of strip device for automatic punching machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, punched metal sheet such as paper box making a paper plate containing the cut line of the expansion plate shape such as a paper box making the cutting die, relates to the type structure of an automatic punching machine for strip devices except the slug.
[0002]
[Prior art]
Automatic punching machines such as paperboard and cardboard boxes are a kind of transfer machine, and each process of paper feeding → punching → dropping (all-round strips, partial strips) → counting of sheets → discharging is performed by one machine. Therefore, the punching process is a vertical working type shearing process. In this shearing method, a material is carried between a cutting tool and a processing cradle (cutting plate), and is pressed and punched until the cutting tool and the processing cradle come into contact with each other. As a result, the tip of the blade comes into contact with the processing cradle every time the punching process is repeated, and the wear of the tip is promoted.
[0003]
The wear of the cutting edge in the shearing process as described above causes a fine area to be generated at the tip of the cutting edge, and this generates paper dust and whiskers from the work material during the punching process. In recent production control of various products, it is not allowed to mix and adhere fine scraps, 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 dust and whiskers generated during shearing are present in the material (paperboard, cardboard box, etc.) from the start of punching to the end of punching, and are not exposed to the product surface. Paper dust and whiskers appear in the process of separation into products and peripheral debris in the all-round strip process in the paper feeding → punching → all-round strip → number counting → discharge process in the punching machine To do. And since these fine scraps are lightweight, they adhere to the product side edge and the edge of the outer peripheral scrap piece by electrostatic action, and even if a dust absorber is installed in the process part of the punching process or the entire peripheral strip Can not be reliably sucked out. Conventionally, there is no suitable means for removing these fine debris, and each outer peripheral edge of a product that has been piled up is 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 board having a development board-shaped cut line, and the strip device excluding the chipping includes a female type and a male type. In this case, it is ideal that the female type fits into the male type with no gaps, but the error in the mounting position when setting the female type and male type to the strip device, If there is a positioning error when positioning the paper board or warping of the paper board, the female mold will be fitted into the male mold with no gap, and there will be inconvenience such as biting the paper board when punching the paper board is there. Therefore, in practice, 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 dimension of the development plate to be punched, and the male type is formed to be larger by about 1.5 mm to 2 mm. Further, from the relationship of the operation stroke of the strip 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 for manufacturing the female and male dies of the strip device as described above with high accuracy and without waste of materials (see Patent Document 1).
[0008]
[Patent Document 1]
Japanese Patent Publication No. 2-17318.
[0009]
[Problems to be solved by the invention]
As mentioned above, paper dust and whiskers generated in the all-round strip process by an automatic punching machine are electrostatically adsorbed even if a dust suction device is installed around the process section. Therefore, it cannot be removed reliably.
[0010]
Also, as in the past, as a removal work of these paper dust, whiskers, etc., in the removal work of wiping the edge with a broom etc. in a state where the products are stacked, dust etc. is scattered around and the work environment As a matter of course, it is inefficient in terms of the process.
[0011]
An object of the present invention is for an automatic punching machine that eliminates the above-mentioned conventional disadvantages and can automatically remove paper dust and whiskers adhering to the product-side edge during strip operation during the strip process. and to provide a mold structure of the strip device.
[0012]
This mold structure can be easily and easily adopted by adopting the female type and the male type manufactured by the manufacturing method of the female type, the male type of the strip device for automatic punching machine described in the above-mentioned Patent Document 1 It can be surely realized.
[0013]
[Means for Solving the Problems]
The mold structure of the strip device for an automatic punching machine according to the present invention is a strip device for an automatic punching machine, in which a development board such as a paper box is punched from a paper board in which a cut line of a development board shape such as a paper box is inserted, and the punching residue is removed. And at least a peripheral portion of the male strip attachment is provided with a plurality of placement recesses for arranging brushing members made of scissors brushes, and a bottom end of the placement recess The portion is formed in a curved shape, and when the male type and the female type are fitted, the scissors brush that is arranged in the placement concave portion and protrudes from the bottom end portion is prevented from being refracted. And
[0014]
In this case, the plurality of brushing members may be disposed on both the female peripheral edge and the male strip attachment peripheral edge so as to be displaced from each other, and the bottom end of each positioning recess may be formed in a curved shape. desirable.
[0015]
A scissors brush is suitable as the brushing member, and a binding scissor brush, a liner brush or the like is desirable as the shape and shape of the scissors brush. And, this is the peripheral portion of the peripheral portion and the male strip attachment of the female to beard brush is arranged provided an arrangement recess forming the bottom tip curved as described above, the recess for該該arrangement The wrinkle brush is disposed on the surface. Thus, upon engagement of the male and female, as whiskers brush projecting from the bottom tip is curved without refraction, bending beard brush by being refracted, it is possible to prevent wear, etc. I can .
[0016]
It is desirable that the strip device mold is manufactured by the female type and male type manufacturing methods described in Patent Document 1. That is, a female die manufactured by cutting a plate material such as a plywood plate with a laser beam processing machine to a predetermined size smaller than the developed plate, and a male side strip produced by cutting the plate material with a predetermined size larger than the developed plate the attachment via a spacer composed of a male produced by fixing on the substrate, it sets up the brushing member on the periphery of the female rim section and a male strip attachment.
[0017]
As in the present invention, a plurality of placement recesses for placing brushing members made of scissors brushes are provided on the peripheral edge of the female mold or the male strip attachment, and the bottom end of the bottom of the placement recess is curved. If it is formed, when the male type and the female type are fitted, it is possible to prevent the scissors brush that is arranged in the arrangement concave portion and protrudes from the tip of the bottom surface from being refracted. Even when paper dust or whiskers appearing in the process of being separated into peripheral scrap pieces, electrostatically adhere to the product edge, they are surely swept away by the brushing member and attached to the product or assembled in the box There is no risk of mixing.
[0018]
When the plurality of brushing members are arranged at intervals around the circumference, paper dust and whiskers can be more reliably swept away, and by arranging brushing members having different shapes in combination, It can correspond to the shape and properties of paper dust and whiskers, and a plurality of brushing members are arranged on both the female peripheral edge and the male strip attachment peripheral edge . In this case, the brushing member on the female mold side keeps the material (paperboard or cardboard) flat until the strip operation starts even if the margin of the material at the time of punching is small. Thus, the male die can uniformly contact the punched product during the entire strip, and the stripped scrap pieces can be dropped in a state of being almost horizontal in the longitudinal direction.
[0019]
Using a scissors brush as the brushing member, a bundling scissors brush or a liner brush is formed, and the bottom end of the bottom of the placement recess formed on the peripheral edge of the female type and the male type strip attachment is formed into a curved surface. If it is arranged in the concave portion for arrangement, when the male type and female type are fitted, the scissors brush protruding from the bottom end of the bottom surface is bent and does not refract at a right angle, so that the scissors brush is prevented from being bent or worn. be able to.
[0020]
The strip device mold is prepared by cutting a plate material such as a plywood plate with a laser beam processing machine to be smaller than the development plate by a predetermined size, and cutting the plate material to be a predetermined size larger than the development plate. If the male base guide is made of a male type manufactured by fixing it on a substrate through a spacer, and the brushing member is installed in the female type or (and) the male type, Since the female type and the 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.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Type structure of an embodiment of an automatic punching machine for strip device according to the present invention will be described with reference to FIG, in this embodiment, female, male Patent Document 1 (KOKOKU 2-17318 JP) The example using what was manufactured by the described manufacturing method is demonstrated.
[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 the computer, the computer performs offset processing inside and outside the graphic, and the laser beam processing machine is controlled by the graphic information processed in this way, As shown in FIG. 1, the central portion of the plywood plate 11 having a plate thickness of 12 mm is cut into a developed plate shape by about 1.5 mm to 2 mm smaller than the size of the developed plate 21. Next, as shown in FIG. 2, the central portion of the veneer plate 11 is cut into a developed plate shape by about 1.5 mm to 2 mm larger than the size of the developed plate. As shown in FIG. 3, the inner portion of the plywood plate 11 is a female die 1 as it is, and the outer portion is a male strip attachment 12.
[0023]
The male strip attachment 12 is fixed to a veneer plate 13 having a thickness of 16 mm, which is drawn with a drawing machine by an automatic drafting machine, with a spacer 15 interposed therebetween as shown in FIG. The At this time, the strip attachment 12 is fixed so as to be separated from the marking line 14 of the plywood plate 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 die 1 and the male die 2 of the strip device manufactured as described above, as shown in FIGS. 6 and 7, a plurality of brushing members are provided below the peripheral edge portion 12 a of the strip attachment 12 in the male die 2. 5 is arranged. The material, form, shape, etc. of the brushing member 5 are not particularly limited. In the embodiment, a scissors brush is used, and in the examples of FIGS. 6 and 7, a bundled scissors in which the base end portion of the scissors bundle 6a is bundled with the cylindrical piece 6b. A brush 6 is used. However, as shown in FIG. 11, this scissors brush may be a liner brush in which a large number of scissors bundles 7a protrude from the side edge of the plate-like substrate 7b at a predetermined interval, and various shapes of brushing members are appropriately combined. Can also be arranged.
[0025]
6 and 7, the male mold 2 is displayed in an inverted state so that the arrangement form of the brushing member 5 can be seen. A recess 3 for arranging the brushing member 5 is formed below the peripheral edge portion 12 a of the strip attachment 12. The bundling brush 6 is arranged in the arrangement recess 3 so that the bunch 6a protrudes from the edge. The tip of the bottom surface 4a of the placement recess 3 is formed in a curved surface 4b so that the bundle 6a is not bent at a right angle during strip operation. Thereby, bending and wear of the scissors brush can be prevented. The brushing member 5 is exchangeably fixed by a fixing member (not shown) or the like.
[0026]
As shown in FIG. 8, the strip operation is performed by feeding a paper board 20 with a cut line of a development board shape such as a paper box on the female die 1 and lowering the male die 2 to punch out the outer scrap pieces 20a. A development plate 21 is obtained. At this time, the paper dust and whiskers 20b generated in the step of making the development plate-shaped cutting line appear in a state of being electrostatically attached to the edge of the development plate 21. In the process of descending, the brushing member 5 (in the embodiment, the bunch bundle 6a) provided on the strip attachment 12 of the male mold 2 strokes the edge 21a of the developing plate 21, so that the paper dust and whiskers 20b are wiped off. , These fall.
[0027]
FIG. 9 is a cross-sectional view showing a mode in which the brushing member 5 is also disposed on the peripheral edge 1 a of the female die 1. In this case, when the brushing member 5 is arranged on the upper side of the peripheral edge portion 1a of the female die 1 as shown in FIG. 9, as shown in FIG. Even if the strip 20a is small), the material can be held horizontally until the strip is started, the male die 2 at the time of the all-round strip uniformly contacts the material, and the stripped scrap 20a is long. The direction is dropped in a state close to horizontal.
[0028]
In the strip device in an automatic punching machine, it is extremely important to maintain the horizontal state of the material at the time of dropping as described above. When the scrap portion rotates locally and an oblique state occurs, the entire scrap piece is broken. When the shape of the scrap pieces is not straight, the removal allowance portion is not uniformly pressed by the strip attachment 12 of the male mold 2 and is scattered in different directions. This also causes the underbar that supports the female die 1 to come into contact with or hang up, causing local dust clogging at the time of dropping. And once the clogged scraps do not fall naturally, they collide with the next product to be transported and the machine is automatically stopped. Therefore, as one of the most important issues of the dropping system, how to make the entire scrap piece in a horizontally uniform state depends on whether the operating speed of the automatic punching machine can be increased. Therefore, it occupies a big weight of technical issues.
[0029]
It was explained that the whole scrap piece is dropped in a horizontal and uniform state, but especially in corrugated board processing, there are vertical and horizontal eyes due to the construction of the paper material, and the cardboard flow direction (along the corrugation valley) There is a slight difference between the case of punching at right angles to the direction and the case of punching in parallel. In other words, when punching at a right angle to the flow direction, it can be easily removed, but when punching in parallel to the step, corrugation can be used if the punching blade and the step do not constitute any parallel. The cutting blade enters the ridges and valleys and a cutting edge enters and a slight resistance difference is generated when dropping, and the scraps rotate and it becomes difficult to make a uniform horizontal drop of the scraps, resulting in cantilevering.
[0030]
Further, in the case of scrap pieces having a punching blade in parallel with the step direction, in the present invention, since the brushing member 5 is provided at the peripheral edge of the female die 1, the punched waste piece is the female die 1. Therefore, the punched scrap pieces are not rotated due to a difference in resistance between the left and right sides, and can be easily pushed down 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 strip device for an automatic punching machine according to the present invention, at least a peripheral portion of the male strip attachment is provided with a plurality of placement recesses for placing brushing members made of scissors brushes and the placement recesses. The bottom end is formed in a curved surface, and when the male type and the female type are fitted, the scissors brush that is disposed in the placement recess and protrudes from the bottom end is prevented from being refracted. Even when paper dust or whiskers appearing in the process of being separated into products and peripheral scraps in the all-round strip process, electrostatically adhere to the product edges, they are surely swept away by the brushing member and adhere to the products There is no danger of being mixed into the assembled box. In addition, it is possible to eliminate the work process of manually sweeping away the paper dust and whiskers.
[0032]
In this case, a scissors brush is used as the brushing member, and a bundling scissors brush or a liner brush is disposed in the concave portion for placement on the bottom end of the bottom surface formed on the peripheral edge of the female-type or male strip attachment. For example, when the male type and the female type are fitted, the scissors brush protruding from the bottom end is not bent and refracted at a right angle, so that the scissors brush can be prevented from being bent or worn.
[Brief description of the drawings]
FIG. 1 is a plan view of a plate material (plywood) for explaining a manufacturing process of a female mold and a male mold used in a mold 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 a laser beam processing machine.
FIG. 3 is a plan view of a female type.
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 disposed on the outer peripheral edge of a male strip attachment, and a state in which the male shape is reversed.
FIG. 7 is a cross-sectional view of a main part showing a state in which a brushing member is arranged on the outer periphery of the male strip attachment.
FIG. 8 is a side view of a main part showing a state during strip operation.
FIG. 9 is a partial cross-sectional view showing a mode in which the brushing member is also disposed on the outer periphery of the female mold.
FIG. 10 is a side view showing a state in which an outer peripheral portion to be a piece of paper board is supported by a brushing member arranged in a female shape.
FIG. 11 is a perspective view showing another configuration example of the scissors brush as a brushing member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Female type 2 Male type 3 Arrangement concave part 4a Bottom surface of arrangement concave part 4b Curved shape 5 Brushing member 6 Bundling scissors brush 6a Collar bundle 6b Cylindrical piece 11 Veneer plate 12 Strip attachment 13 Veneer plate 14 Marking wire 15 Spacer 20 Paper plate 20b Scrap 20b Whiskers 21 Unfolding plate

Claims (2)

Punched metal sheet such as paper box making a paper plate containing the cut line of the expansion plate shape such as a paper box making, female automatic punching machine for strip devices except the slug, a mold structure formed of a male, at least A plurality of placement recesses for arranging brushing members made of scissors brushes are provided on the peripheral edge of the male strip attachment, and the bottom end portion of the placement recess is formed in a curved shape. A mold structure of a strip device for an automatic punching machine, which prevents the scissors brush disposed in the placement recess from protruding from the bottom end portion from being refracted during fitting.   A plurality of brushing members are arranged at different positions on both the female peripheral edge and the male strip attachment peripheral edge, and the bottom end of each of the placement recesses is formed in a curved surface. The mold structure of the strip device for an automatic punching machine according to claim 1.

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