JP2002103479A - Blank mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blank mold in which labor hour is saved in manufacturing and weight is reduced and disorder of bundled condition of products or retention of the products in an opening part are reduced. SOLUTION: A top mold 1 with pushing plates 4 which are fixed on a base plate 3 through supports 6 and press plates 5 which are supported on the base plate 3 through supports 7 and elastic members 7a and can be displaced in the vertical direction to the base plate 3 by elastic deformation of the elastic members 7a and a bottom mold 2 with a top plate 8 and a bottom plate 10 in which opening parts each with a dimension forming a definite gap to the outer periphery of the pushing plate 4 are formed, a plurality of columnar connecting members 9 for connecting and fixing the top plate 8 and the bottom plate 10 and guiding members 12 for connecting peripheral faces of the top and bottom opening parts 11 together and provided so as to surround the opening parts 11 on a plurality of positions of the opening parts 11 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blank mold for use in an apparatus for cutting and separating a desired pattern from a flexible flat material such as paper, cardboard sheet or plastic sheet.

[0002]

2. Description of the Related Art For example, a plastic case is manufactured by cutting and punching out a case original having a desired shape from a plastic sheet and folding the original. This production
Full automation is desired.

[0003] Japanese Patent Application Laid-Open No. Hei 5-177589 discloses an automatic punching apparatus for sheet material. The automatic punching apparatus for sheet material described in the publication is a step of automatically supplying the sheet material, a product in which the sheet material is cut into a pattern of a desired shape, connected at a nick portion, and not completely separated from the sheet material. In this process, the step of obtaining the product, the step of punching the product using a punching die, and the step of separating the product into waste parts are automated.

[0004] However, in the separation step in the above-mentioned publication, after punching, the product that has risen together with the upper die of the punching die is separated by dropping it on a product tray, and the product in the product tray is scattered. However, for example, in order to automate even the product folding process, there is a problem that a so-called bundling process for organizing and bundling the products is required.

[0005] In recent years, a punching type called a blank type has been adopted in the art in order to solve the above problem.
FIG. 6 is a partial sectional view showing a blank mold. In the figure, 21 is an upper mold and 22 is a lower mold. The upper die 21 includes a base plate 23 made of plywood, and an extruded portion 25 formed by stacking plywood formed into a product shape on the base plate 23.
The lower mold 22 has an opening 26 formed by laminating plywood in which the extruded portion 25 is fitted with a predetermined clearance and formed by laser processing or the like. 27 is a sheet material from which a product 28 to be punched is cut, 29
Is a holding plate for locally holding the sheet material 27.

FIG. 7 is a sectional view showing a punched state. As shown in the figure, the product 28 of the sheet material 27 is correctly placed on the opening 26 of the lower mold 22 and the sheet material 2
7 is held down, the push-out section 25 descends, and the pushed product 28 is separated from the sheet material 27 and the opening 2
At the same time as falling inside 6, the extruded portion 25 rises.
The product 28 is bundled below the opening 26 by repeatedly raising the pushing section 25, supplying the sheet material 27, and lowering the pushing section 25.

In the punching shown in FIG. 7, the extruding portion 25 repeatedly moves up and down at high speed. The air pressure inside the opening 26 fluctuates in a complicated manner due to the repetition of the high speed rise and fall. Due to this fluctuation in air pressure, the tied state of the product 28 is disturbed, and sometimes the product 28
May stay inside the opening 26. In order to prevent the sizing state from being disturbed or staying inside the opening 26, it is necessary to increase the depth of the opening 26 to some extent. In addition, since there is a limit to the thickness that can be formed by laser processing or the like, a plurality of plywoods are formed, and the plurality of plywoods are stacked to form the opening 26 and the punched portion 25.

[0008]

As described above, the conventional so-called blank mold forms a product shape on each plate material such as a plywood and laminates the formed plate materials, so that the production is troublesome. There is a problem that the weight of the blank mold becomes heavy.

In addition, there is a problem that the product is easily affected by fluctuations in the air pressure due to the rise and fall of the extruding portion, and the product is not properly bundled or the product stays inside the opening.

[0010] The present invention has been made to solve the above-described problems, and can save time and effort in manufacturing.
An object of the present invention is to provide a blank mold that is reduced in weight and that prevents the product from being disturbed in a bundled state or that the product stays inside the opening.

[0011]

A first blank mold according to the present invention comprises a base plate, an extruded plate connected to the base plate via the base plate and a space through a first connecting member, and a support member. An upper die having a pressing plate supported by the base plate via an elastic member and capable of being displaced in a direction perpendicular to the base plate by elastic deformation of the elastic member, and a fixed gap with the outer periphery of the extrusion plate Upper and lower plates each having an opening having a size in which the opening is formed, a plurality of second connecting members for connecting and fixing the upper plate and the lower plate via a space, and a plurality of positions of the opening. And a lower die having a guide member that connects the peripheral surfaces of the upper and lower openings and surrounds the openings.

A second blank type according to the present invention is the same as the first blank type, wherein the extruded plate is provided with an air vent hole penetrating the plate.

A third blank type according to the present invention is the same as the first blank type, wherein the pressing plate is provided so as to surround the outer periphery of the extruding plate.

A fourth blank type according to the present invention is the first blank type, wherein a hard elastic material is provided on the surface of the extruded plate.

A fifth blank die according to the present invention is the first blank die, wherein a hard elastic material is provided on the surface of the holding plate.

A sixth blank die according to the present invention is the same as the first blank die, wherein the guide member is fitted to the upper plate and the lower plate such that the guide member is movable in a direction perpendicular to the peripheral surface of the opening. A fitting portion is provided.

A seventh blank type according to the present invention is the first or second blank type, wherein the guide member is made of a metal plate.

An eighth blank type according to the present invention is any of the first, sixth and seventh blank types, wherein the guide member is provided with a support portion for supporting the upper plate and the lower plate. Things.

A ninth blank mold according to the present invention is the first blank mold, wherein the tapered portion having a gradient below the lower plate and the tapered portion are provided at a plurality of positions on the peripheral surface of the opening of the lower plate. A guide member having a surface composed of the lower plate and a linear portion in the vertical direction is provided.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a sectional view showing a first embodiment of a blank type according to the present invention. In the figure, 1 is an upper mold, 2 is a lower mold, 13 is a product receiving stand, 14 is a sheet material whose product shape is cut and the product is locked by a nick, 15
Is a punched product, showing a bundled state.

The upper die 1 is formed into a shape of a product to be punched out of the base plate 3 and the sheet material 14, and has an extruded plate 4 having an air vent hole 4 a formed therein. The upper die 1 surrounds the outer periphery of the extruded plate 4 and presses the sheet material 14. And a holding plate 5. The extruding plate 4 is fixed to the base plate 3 with a predetermined distance by the first connecting member 6, and a space is formed between the base plate 3 and the extruding plate 4. The holding plate 5 is fixed to one end of the support member 7, and the other end of the support member 7 is movably supported by the base plate 3 together with an elastic body 7a such as a spring or rubber.

As shown in FIG. 2A, the pressing plate 5 first presses the sheet material 14 during a load in punching, and then the elastic body 7a is displaced as shown in FIG. 2B. ,
The extruding plate 4 punches the sheet material 14. in this way,
First, the supporting member 7 and the elastic member 7a may be installed in such a manner that the pressing plate 5 presses the sheet material 14, and then the extruding plate 4 punches the sheet material 14, and the supporting member as shown in FIG. In addition to the combination of the elastic member 7 and the elastic member 7a, various forms such as sandwiching an elastic member such as a spring, rubber, or bellows between the support member 7 and the base plate 3 can be adopted.

The lower die 2 includes a flat upper plate 8 and a lower plate 10.
And a plurality of second connecting members 9 for connecting and fixing the upper plate 8 and the lower plate 10, and a space is formed between the upper plate 8 and the lower plate 10. The upper plate 8 and the lower plate 10 are formed with an opening 11 having a predetermined gap from the peripheral surface of the extruded plate 4 by laser processing or the like, and a main portion of the peripheral surface of the opening 11 is punched. A guide member 12 having a function of guiding a product is provided. The guide member 12 has an opening 11 so that the punched product 15 can be smoothly guided.
Is formed between the upper plate 8 and the lower plate 10 so as to have the same surface as the peripheral surface. The guide member 12 connects the upper plate 8 and the lower plate 10 and also has a function as a strength member against the pressing force of the upper die 1.

The blank mold according to the present embodiment is configured as described above, and thus requires more time for the extruding plate 4 and the opening 11 by laser processing or the like than the conventional flat plate laminated one. The molding time is reduced.

By providing a space between the base plate 3 and the extruding plate 4 and between the upper plate 8 and the lower plate 10, the weight of the entire mold can be reduced, and the extruding plate 4 moves up and down. As a result, the air flow generated in the opening 11 flows into the space, so that the air pressure fluctuation inside the opening 11 is reduced, the falling posture of the punched product is stabilized, and the bundled state is improved. In addition, the state inside the mold can be monitored, and when an abnormality occurs, it is possible to quickly respond.

Further, by providing the guide member 12 so as to avoid a place where the product stays, such as a portion where the shape of the opening 11 is complicated, the product can be smoothly dropped.

The guide member 12 has the same surface as the peripheral surface of the opening 11 between the upper plate 8 and the lower plate 10, so that the product can be guided smoothly and the bundled state can be improved. Can be.

Although the air vent hole 4a provided in the pushing plate 4 is not always necessary, the provision of the air vent hole 4a reduces the air pressure applied to the product and stabilizes the posture of the falling product. Can be.

If the punched sheet material 14 is deformed, the sheet material 14 may not be transported smoothly, and the sheet material 14 may stay on the way. However, the pressing plate 5 should surround the shape of the pushing plate 4. Thereby, the deformation of the sheet material 14 is suppressed, and the sheet material 14 can be smoothly transported.

Embodiment 2 FIG. FIG. 3 is a side view showing Embodiment 2 of the blank type according to the present invention, and the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.

In the second embodiment, as shown in FIG. 3A, a hard elastic material 16 is provided on the pressing surface of the extruding plate 4 for pressing the sheet material 14 or the pressing surface of the pressing plate 5. .

By providing the hard elastic material 16 on the pressing surface of the extruding plate 4, it is possible to prevent the product from being damaged. In addition, when a soft elastic material is used, FIG.
As shown in FIG. 3, the edge portion of the soft elastic material is greatly deformed, giving a tensile stress to the sheet material 14 and deforming the sheet material 14. By using the hard elastic material 16, as shown in FIG. , Punching the product part with shearing force, sheet material 1
4 can be prevented from being deformed.

Further, as shown in FIG.
When a soft elastic material is used, the sheet material 14 may float on the pressing surface. However, by providing the hard elastic material 16 on the pressing surface of the holding plate 5, as shown in FIG. As described above, the pressing plate 5 flatly presses the sheet material 14 on the pressing surface, and can prevent the pressing plate 5 from slipping.

As described above, the hard elastic member 16 is an elastic member having such a hardness that the contact surface thereof can be elastically deformed in a state of being flat when it comes into contact with the sheet member 14. Alternatively, there is a synthetic material of cork and rubber.

Embodiment 3 FIG. FIG. 4 is a plan view (a), a cross-sectional view (b), and a perspective view (c) showing a guide member showing a third embodiment of the blank mold according to the present invention.
In the figure, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.

The third embodiment relates to a guide member 12, and as shown in FIGS. 3 (a) and 3 (b), a plurality of guide members 12 are formed by opening the upper plate 8 and the lower plate 10. 11 or fitted in a groove 17 or through hole 18 formed around the opening 11 of the upper plate 8 and the lower plate 10.

The guide member 12 is a rectangular guide member 12a as shown in FIG. 4C or a guide member 12c provided with a support portion 12b for supporting the upper plate 8 and the lower plate 10 by notches or the like. .

Each of the guide members 12a and 12c functions as a strength member against the pressing of the upper die. In particular, the guide member 12c is formed in a shape provided with the support portion 12b like the guide member 12c. Strength can be increased.

The groove 17 and the through hole 18 are
The guide surface 12d of the guide members 12a, 12c can be adjusted to the peripheral surface of the opening 11 by increasing the moving direction so that the a, 12c can move in the direction perpendicular to the peripheral surface of the opening 11.

The material of the guide members 12a and 12c is preferably a material having good workability, high strength, and capable of reducing the area of the guide surface 12d. A metal plate having good workability, such as stainless steel, is preferably used. Used.

Embodiment 4 FIG. FIG. 5 is a sectional view (a) and a bottom view (b) showing a fourth embodiment of the blank mold according to the present invention, and the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.

The fourth embodiment is characterized in that a guide member 19 is provided as shown in FIG. 5, and the guide member 19 is attached to the lower plate 10 so as to guide the product 15 in the falling direction. Are provided on the peripheral surface of the opening 11.
The guide member 19 includes a tapered portion 19a and a linear portion 19b.
Are provided on the lower plate 10 so that

As described above, a gap is provided between the opening 11 and the push plate 4, and a gap is formed between the product 15 and the opening 11. According to this embodiment, by providing the guide member 19, the gap can be reduced, and the bundled state of the product can be improved.

As the material of the guide member 19, a material having a small surface roughness and smoothness is used. As a material of the guide member 19, a thin metal plate is a material which has good moldability and is preferable.

As a method for fixing the guide member 19 to the lower plate 10, it is a simple and convenient method to use a double-sided adhesive tape. However, using an adhesive or forming a groove in the lower plate 10 Various methods can be adopted, such as fitting into a screw or using a screw.

[0046]

According to the first blank of the present invention, the base plate, the extruding plate connected to the base plate by the first connecting member via the base plate and the space, the support member, and the elastic member. An upper die having a pressing plate supported by the base plate through the base member and capable of being displaced in a direction perpendicular to the base plate by the elastic deformation of the elastic member, and a fixed gap with the outer periphery of the extruding plate are formed. Upper and lower plates having openings of different sizes, a plurality of second connecting members for connecting and fixing the upper and lower plates via a space, and And a lower die having a guide member provided so as to surround the opening and to surround the opening. Extruded plate which is troublesome due to Molding time of the opening is reduced and.

Further, since the space between the base plate and the extruding plate and the holding plate and the space between the upper plate and the lower plate are spaces, the weight of the blank mold as a whole is reduced, and the air pressure fluctuation inside the opening is reduced. It is possible to stabilize the falling posture of the punched product and improve the state of bundle.

Further, the state inside the mold can be monitored, and when an abnormality occurs, it is possible to respond quickly.

Further, a guide member can be provided inside the opening so as to avoid a place where the product is likely to stay, so that the product can be smoothly dropped.

According to the second blank type according to the present invention, since the extrusion plate is provided with the air vent hole penetrating this plate, the air pressure applied to the product is reduced, and the posture of the falling product is stabilized. can do.

According to the third blank type of the present invention, since the pressing plate is provided so as to surround the outer periphery of the extruding plate, the pressing plate suppresses the deformation of the sheet material, and is used after the punching. The sheet material can be smoothly transported.

According to the fourth blank die of the present invention, since the hard elastic material is provided on the surface of the extruded plate, it is possible to prevent the product from being damaged.

According to the fifth blank type of the present invention, since the hard elastic material is provided on the surface of the holding plate, the holding plate can be prevented from slipping.

According to the sixth blank type of the present invention, the upper plate and the lower plate are provided with the fitting portions for fitting the guide members so as to be movable in a direction perpendicular to the peripheral surface of the opening. Therefore, the surface of the guide member on the opening side can be matched with the peripheral surface of the opening.

According to the seventh blank die of the present invention, since the guide member is made of a metal plate, the pressing strength of the lower die is increased, and the area of the guide member in contact with the product is reduced. It can make the product fall smoothly.

According to the eighth blank die of the present invention, since the guide member is provided with the support portion for supporting the upper plate and the lower plate, the pressing strength of the lower die can be increased.

According to the ninth blank type of the present invention, the tapered portion having a gradient below the lower plate and the lower plate following the tapered portion are provided at a plurality of positions on the peripheral surface of the opening of the lower plate. Since the guide member having the surface composed of the vertical linear portion is provided, the gap between the opening and the product can be reduced, and the product can be better bundled.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a first embodiment of a blank type according to the present invention.

FIG. 2 is a partial cross-sectional view showing an operation of the first embodiment of the blank type according to the present invention.

FIG. 3 is a side view showing Embodiment 2 of the blank mold according to the present invention.

FIG. 4 is a partial plan view (a), a cross-sectional view taken along line AA (b), and a perspective view (c) showing a guide member showing a third embodiment of the blank mold according to the present invention.

FIGS. 5A and 5B are a partial sectional view and a bottom view showing a fourth embodiment of the blank mold according to the present invention. FIGS.

FIG. 6 is a partial sectional view showing a conventional blank mold.

FIG. 7 is a partial cross-sectional view showing a punched state by a conventional blank die.

[Explanation of symbols]

1 upper die, 2 lower die, 3 base plate, 4 extruded plate,
4a air vent hole, 5 holding plate, 6 support, 7 support member, 7a elastic body, 8 upper plate, 9 connecting member, 10 lower plate, 11 opening, 12, 12a, 12c guide member,
12d guide surface, 13 product stand, 14 sheet material,
15 products, 16 hard elastic materials, 17 grooves, 18 through holes, 19 guide members, 19a tapered portions, 19b linear portions.

Claims (9)

[Claims] 1. A base plate, an extruding plate connected to the base plate via a first connecting member via the base plate and a space, a support member, and an elastic member supported by the base plate via an elastic member. An upper die having a pressing plate capable of being displaced in a direction perpendicular to the base plate by elastic deformation of a member, and an upper plate having an opening having a size in which a constant gap is formed with the outer periphery of the extruding plate; A lower plate, a plurality of second plates connecting and fixing the upper plate and the lower plate via a space portion;
A connecting member, a lower mold having a guide member provided to connect the peripheral surfaces of the upper and lower openings to a plurality of positions of the opening and surrounding the opening. . 2. The blank die according to claim 1, wherein the extruding plate is provided with an air vent hole penetrating the plate. 3. The blank die according to claim 1, wherein the holding plate is provided so as to surround an outer periphery of the pushing plate. 4. The blank die according to claim 1, wherein a hard elastic material is provided on the surface of the extruded plate. 5. The blank mold according to claim 1, wherein a hard elastic material is provided on a surface of the holding plate. 6. The upper plate and the lower plate are provided with a fitting portion for fitting the guide member so as to be movable in a direction perpendicular to the peripheral surface of the opening. Blank type. 7. The blank mold according to claim 1, wherein the guide member is made of a metal plate. 8. The guide member according to claim 1, wherein the guide member is provided with a support portion for supporting the upper plate and the lower plate.
Or a blank type according to any one of 7. 9. A guide having a tapered portion having a slope below the lower plate and a surface formed of a linear portion perpendicular to the lower plate following the tapered portion at a plurality of locations on the peripheral surface of the opening of the lower plate. The blank type according to claim 1, further comprising a member.