JP3018424U - Die-cut structure - Google Patents

Abstract

(57) [Summary] [Purpose] A die-cutting structure that allows punching of a specified shape from a sheet-shaped material such as paper or plastic, and that, when punching, can reliably form ruled lines without damaging the ruled lines. Is provided. [Structure] Ruled line forming blade 2 and cutting blade 3 on die board 4
And plant. The ruled line forming blade 2 is attached to the die board 4 so that it can be moved up and down by a minute amount. Sides of ruled line forming blade 2
A part of 20 is laterally pressed by the frictional resistance adding mechanism 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a die-cutting structure.

[0002]

[Prior art]

 When manufacturing a paper case such as a cigarette case or a food packaging box, it was manufactured by punching out a sheet-shaped material from the developed shape of the case to be manufactured and assembling the punched one.

Therefore, when punching from a material, it is necessary to form a ruled line which is a folding line when assembling the punched product.

Therefore, as this type of punching structure, as shown in FIG. 7, a ruled line forming blade a is provided. That is, the tip a of the ruled line forming blade a has a rounded shape and descends to press the sheet-shaped material c, thereby forming a ruled line d consisting of a small groove on the sheet-shaped material c. To form.

[0005]

[Problems to be solved by the device]

 However, the conventional ruled line forming blade a is fixed to a die board (not shown) and cannot reciprocate in the vertical direction.

Therefore, when the ruled line forming blade a descends and presses the sheet-shaped material c, the sheet-shaped material c is separated between the receiving plate receiving the sheet-shaped material c and the ruled-line forming blade a. There is a possibility that a large compressive force acts and the bottom e of the ruled line d is damaged.

Therefore, it is an object of the present invention to provide a punching structure capable of easily and reliably forming ruled lines.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the die-cutting structure according to the present invention is a die-cutting structure in which a ruled line forming blade and a cutting blade are planted in a die board, and the ruled line forming blade is attached to the die board. The die board is provided with a frictional resistance adding mechanism that elastically presses a part of the side surface of the ruled line forming blade from the lateral direction while being attached so as to allow a small amount of vertical movement.

Another punching structure is a punching structure in which a ruled line forming blade and a cutting blade are implanted in a die board, and the ruled line forming blade enables a minute amount of vertical movement on the die board. The die board is provided with a pressing force applying mechanism that elastically presses the ruled line forming blade downward and laterally.

[0010]

[Action]

 Since the ruled line forming blade is attached to the die board so that it can be moved up and down by a small amount, when this ruled line forming blade is pressed against a material made of a sheet body such as paper or plastic, the ruled line forming blade is The material is retracted by an amount so that the material does not receive a large compressive force between the crease forming blade and the receiving plate receiving the material.

Further, by the frictional resistance adding mechanism or the pressing force adding mechanism, it is possible to add a frictional resistance for adjusting the weight of the upward and downward reciprocating motion to the ruled line forming blade.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 1 is a cross-sectional view of a main part of a punching structure according to the present invention. As shown in FIG. 2, this punching structure is made from a sheet-shaped material 1 such as paper, plastic, a laminate material, and leather. The punched shape is a case (a punched body A) in a developed state such as a case, and includes a ruled line forming blade 2 and a cutting blade 3 as shown in FIG.

Further, the ruled line forming blade 2 and the cutting blade 3 are embedded in the die board 4. That is, the die board 4 is provided with a slit 5 into which the ruled line forming blade 2 is implanted and a slit 6 into which the cutting blade 3 is implanted. The blade 3 is implanted so that its tips 2a, 3a protrude from the lower surface 4a of the die board 4 by a predetermined amount.

The ruled line forming blade 2 is made of a metal strip plate, and its tip 2a has a rounded shape. With this ruled line forming blade 2, as shown in FIG. By being pressed, the ruled line 7 having a small groove shape is formed on the material 1. The ruled line 7 is a fold line when assembling the punched body A such as the case to be formed, as shown by the chain line in FIG.

Further, the cutting blade 3 is made of a metal strip plate, and its tip 3a is a cutting edge, and the cutting edge 3 can cut the material 1 as shown in FIG. As shown in FIG. 2, the punched body A having a predetermined shape can be punched.

Thus, the die board 4 is fixed to the surface plate T, the cutting blade 3 is fixed to the die board 4, and the ruled line forming blade 2 is attached to the die board 4 so that it can be moved up and down by a minute amount.

By the way, at the base end portion of the slit 5, elastic members 9 arranged at a predetermined pitch are installed. The elastic member 9 is composed of a coil spring 8 and presses the base end edge portion 2b of the ruled line forming blade 2 to elastically bias the ruled line forming blade 2 in a direction of protruding from the die board 4. That is, the notch 28 as shown in (b ') and (c') of FIG. 1 is provided at a predetermined pitch on the upper edge of the ruled line forming blade 2, and the elastic member 9 is attached to the notch 28. To be done.

Further, the die board 4 is provided with a frictional resistance adding mechanism 21 that elastically presses a part of the side surface 20 of the ruled line forming blade 2 laterally at a predetermined pitch.

For example, as shown in FIG. 3, the frictional resistance adding mechanism 21 includes a main body 23 including a tubular body 23a and a lid body 23b for covering the proximal end opening of the tubular body 23a, and the main body 23. An elastic member 24 to be installed and a pusher 25 into which the base end disk portion 25a is inserted into the main body 23 are provided.

That is, the inner flange 27 is formed at the opening edge of the main body 23, and in the free state, the elastic member 24 is attached to the inner flange 27 by the arrow shown in FIG. As shown in (b) of FIG. 3, the proximal end disk portion 25a of the pressing element 25 pressed outward as described above is locked, and the rounded tip end portion 25b of the pressing element 25 is in this state, as shown in FIG. When pressed inward as shown by the arrow, the pressing element 25 is inserted into the main body 23 against the elastic force of the elastic member 24.

The die board 4 is provided with a hole 26 communicating with the slit 5, and the frictional resistance adding mechanism 21 is fitted into the hole 26.

In this fitted state, the pressing element 25 is pressed by the side surface 20 of the ruled line forming blade 2 as shown in FIG.

Therefore, the frictional resistance adding mechanism 21 adds frictional resistance to the ruled line forming blade 2 for adjusting the weight of the up-and-down movement (slide). The falling of the ruled line forming blade 2 is effectively prevented, and the vertical movement is moderately light (weight).

In the free state, the elastic member 9 causes the ruled line forming blade 2 to project from the cutting blade 3 by a minute dimension H as shown in FIG. When the ruled line forming blade 2 is pressed against the die board 4 side against the elastic force of the elastic member 9, the ruled line forming blade 2 can be retracted by a minute dimension H. That is, in the free state of the ruled line forming blade 2, as shown in FIG. 1B, a gap S is provided between the upper edge of the ruled line forming blade 2 and the lower surface of the surface plate T. It matches H. A locking mechanism (not shown) may be provided to prevent the die board 4 from coming off. In this case, of course, depending on the locking mechanism, a small amount of vertical movement of the ruled line forming blade 2 is not restricted.

The surface plate T is connected to an up-and-down moving mechanism including a not-illustrated schilling mechanism, and the surface plate T, and thus the die board 4, moves up and down. The material 1 is received by a receiving plate (not shown).

Therefore, according to the punching die structure configured as described above, the die board 4 is lowered from the free state (the state above the material 1) shown in FIG. First, the ruled line forming blade 2 comes into contact with the material 1 as shown in FIG.

After that, when the die board 4 is further lowered, the ruled line forming blade 2 is retracted by the reaction force from the material 1 against the elastic force of the elastic member 9, and The ruled line 7 is formed as shown in FIG. At this time, since the retreat amount of the ruled line forming blade 2 is a minute dimension H, the tip 2a of the ruled line forming blade 2 and the tip 3a of the cutting blade 3 are the same as shown in FIG. At the height position, the material 1 is cut by the cutting blade 3. In this case, as shown in FIG. 1C, the upper edge of the ruled line forming blade 2 abuts the lower surface of the surface plate T and the ruled line forming blade 2 is received.

As described above, since the ruled lines 7 are formed and then cut, the dimension W between the cut portions does not shrink after cutting, and the punched body A with high accuracy can be formed.

When forming the ruled lines 7, the ruled line forming blade 2 is retracted as shown in FIG. 1C, so that the bottom portion 7a of the formed ruled lines 7 is not damaged.

Next, FIG. 4 shows a modified example of the elastic member 9. In this case, the elastic member 9 is made of an elastic cushion material 10 such as urethane resin or synthetic rubber, and is fitted into the hole 11 provided in the die board 4. Have been combined. Then, the base end edge portion 2b of the ruled line forming blade 2 is inserted.

Therefore, also in this case, in the free state, the ruled line forming blade 2 projects from the cutting blade 3 by a minute dimension H and is provided between the upper edge of the ruled line forming blade 2 and the lower surface of the surface plate T. Since the gap S is provided, when the ruled line forming blade 2 is pressed, it retreats by a minute dimension H against the elastic force of the cushioning material 10 which is the elastic member 9.

Further, FIG. 5A shows another modification of the elastic member 9, and in this case, the elastic member 9 comprises a leaf spring 12 mounted in the hole 11. Also in this case, in the free state, as shown in FIG. 5B, a gap S is formed between the upper edge of the ruled line forming blade 2 and the lower surface of the surface plate T, and the ruled line forming blade 2 is formed. When is retracted, the upper edge of the ruled line forming blade 2 is received by the lower surface of the surface plate T, as shown in FIG.

Next, FIG. 6 shows an enlarged cross-sectional view of the essential part of another embodiment. In this case, the die board 4 has a pressing force that elastically presses the ruled line forming blade 2 downward and laterally. The additional mechanism 30 is provided at a predetermined pitch.

The pressing force adding mechanism 30 has the same structure as that of the frictional resistance adding mechanism 21 described above, and includes a cylindrical body 34a and a lid 34b for covering the base end opening of the cylindrical body 34a. The main body 34, the elastic member 32 installed in the main body 34, and the pusher 33 into which the base end disk portion 33a is inserted into the main body 34 are provided, and are fitted into the holes 26 of the die board 4.

The rounded tip portion 33b of the pusher 33 is fitted into the cutout portion 31 provided on the side surface 20 of the ruled line forming blade 2. The notch 31 has a right-angled triangular cross-section, and in the free state, as shown in FIG. 6 (a), the tip 33b of the presser 33 is located on the base end face 31a of the notch 31. It is locked and the amount of protrusion of the ruled line forming blade 2 from the die board 4 is maintained at a predetermined amount. That is, the ruled line forming blade 2 projects from the cutting blade 3 by a minute dimension H.

Therefore, if the ruled line forming blade 2 is pressed toward the die board 4 side as shown by the arrow B as shown in FIG. 6B, the ruled line forming blade 2 will have the inclined surface portion 31 b of the notch 31. Is pushed up while sliding on the pusher 25. If the pushing force of the ruled line forming blade 2 is released from the state shown in FIG. 6B, the pusher 33 is pushed by the resilient force of the resilient member 24 as indicated by arrow C. The tip portion 33b presses the inclined surface portion 31b of the cutout portion 31, whereby the ruled line forming blade 2 is pressed downward as indicated by the arrow D, and returns to the original state shown in FIG.

That is, the pressing force applying mechanism 30 prevents the ruled line forming blade 2 from coming off, and at the same time imparts frictional resistance to the ruled line forming blade 2 to prevent the ruled line forming blade 2 from moving vertically. The lightness can be finely adjusted, whereby the ruled line 7 can be reliably formed without damaging the bottom wall 7a thereof.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and for example, the arrangement pitch of the frictional resistance adding mechanism 21 and the pressing force adding mechanism 30 and the number of the arrangements can be freely changed, and each mechanism can be changed. The elastic force of the elastic members 24 and 32 of 21 and 30 also adds frictional resistance to the ruled line forming blade 2 to adjust the lightness of the vertical direction movement of the ruled line forming blade 2. The pressure applying mechanism 30 can be freely changed as long as it can press the ruled line forming blade 2 downward.

[0040]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

When the ruled line forming blade 2 is pressed against the sheet-shaped material 1 such as paper or plastic, the blade 2 can be retracted by a very small amount without damaging the ruled line 7 to be formed. Highly accurate cut product shape and dimensions.

By the frictional resistance adding mechanism 21 or the pressing force adding mechanism 30, it is possible to add a frictional resistance for adjusting the weight of the reciprocating motion in the vertical direction, and the material for forming a ruled line with an appropriate pressing force on the material 1. 2 can be pressed, and the ruled line 7 can be reliably formed.

The frictional resistance adding mechanism 21 or the pressing force adding mechanism 30 can effectively prevent the ruled line forming blade 2 from coming off, and can stably form the ruled line 7 for a long period of time.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a punched state.

FIG. 3 is a sectional view of a frictional resistance adding mechanism.

FIG. 4 is a cross-sectional view showing a modified example of an elastic member.

FIG. 5 is a cross-sectional view showing another modification of the elastic member.

FIG. 6 is a cross-sectional view of a pressing force adding mechanism.

FIG. 7 is a simplified cross-sectional view of a conventional main part.

[Explanation of symbols]

 2 Ruled line forming blade 3 Cutting blade 4 Die board 20 Side surface 21 Friction resistance adding mechanism 24 Elastic member 25 Pusher 25b Tip 30 Pressing force adding mechanism 31 Notch 31b Inclined surface 32 Elastic member 33 Pusher 33b Tip

Claims (4)

[Scope of utility model registration request] 1. A die-cutting structure in which a ruled line forming blade 2 and a cutting blade 3 are planted in a die board 4, wherein the ruled line forming blade 2 is used.
Is attached to the die board 4 so that it can be moved up and down by a small amount, and a frictional resistance adding mechanism 21 for elastically pressing a part of the side surface 20 of the ruled line forming blade 2 from the lateral direction is provided on the die board 4. Die-cut structure characterized by that. 2. The friction resistance adding mechanism 21 comprises a ruled line forming blade 2
And a pusher 25 that can reciprocate laterally with respect to
2. The punching structure according to claim 1, further comprising: an elastic member 24 that presses against the side surface 20 side of the ruled line forming blade 2 to press the tip end 25b of the pressing element 25 against the side surface 20. 3. A ruled line forming blade 2 in a die-cutting structure in which a ruled line forming blade 2 and a cutting blade 3 are implanted in a die board 4.
Is attached to the die board 4 so that it can be moved up and down by a small amount, and a pressing force applying mechanism 30 for elastically pressing the ruled line forming blade 2 downward and laterally is provided on the die board 4. Die-cut structure characterized by. 4. A pressing force applying mechanism 30 is provided with a pusher 33 capable of reciprocating in a lateral direction with respect to the ruled line forming blade 2, and the pusher 33 on a side surface 20 of the ruled line forming blade 2. The tip 33b of the pusher 33 is pressed by pushing it toward the notch 31 having the inclined surface 31b.
Resilient member 32 for pressing the inclined surface portion 31b of the cutout portion 31 into contact with
The die-cutting structure according to claim 2, further comprising: