Sheet material processing device

Abstract

To provide a sheet material processing device which can fix a plurality of small pieces, which are taken out from even a sheet material with no release material layer without need for a half-cutting blade in a punching die.SOLUTION: A sheet material processing device comprises a punching die for a plurality of pieces, and a support plate 21 which is so located as to face the punching die and on which a sheet material as a punched component is placed. The support plate 21 has a groove 23 crossing a blade tip contact part 24 contacting a punching blade of the punching die. Links that connect things cut by the punching blade are simultaneously created by the groove 23, and therefore, each punched small piece can be held in the sheet.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a sheet material converting apparatus, and more particularly to a converting apparatus for forming tiny seams connecting multiple pieces. [Background technology]

[0002] Conventionally, label materials used for labels, etc. are laminated with an upper layer of a base material and a lower layer of a release material, and when producing labels from this label material, half-punching is performed on the inner circumference of the fully punched label material, where only the base material is cut and the release material is not cut, in order to make it easier to peel off the base material from the release material. Also, when producing multiple labels or cake picks to be used for cake decoration from a single sheet using a multi-cavity punching blade, half-punching is performed by cutting only the base material and holding the labels and cake picks on the release material in order to make it easier to manage the quantity.

[0003] An example of a processing device that simultaneously performs half punching and full punching on a sheet material is described in Patent Document 1.

[0004] FIG. 6 shows a conventional cutting edge die described in Patent Document 1 that is capable of simultaneously performing half blanking and full blanking with high accuracy.

[0005] 6, the blade die includes a full punching blade 60, a half-cut blade 61, and a blade fixing part 62 for fixing the bases of the full punching blade and the half-cut blade, and the blade fixing part 62 has a base material 63 and a back plate 64 which are overlapped and fixed to each other. The full punching blade 60 passes through a full punching blade through groove 65 formed in the base material 61, is fitted into a full punching blade height adjustment groove 67 formed in the back plate 64, and is supported by the groove bottom surface of the full punching blade height adjustment groove 67. The half-cut blade 61 passes through a half-cut blade through groove 66 formed in the base material 63, is fitted into a half-cut blade height adjustment groove 68 formed in the back plate 64, and is supported by the groove bottom surface of the half-cut blade height adjustment groove 68. The depth of excavation of the full-punch blade height adjustment groove 67 to the bottom surface of the groove and the depth of excavation of the half-cut blade height adjustment groove 68 to the bottom surface of the groove were adjusted so that the half-cut blade 61 half-cuts to the sealing material 71 when the full-punch blade 60 punches through the sheet-like base material 70 in the thickness direction down to the release material 72. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2015-30054 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, conventional manufacturing methods required a full-punch blade and a half-punch blade (half-cut blade) like the blade type described in Patent Document 1, and had the problem that the blade height of the half-punch blade had to be precisely adjusted in increments of 10 micrometers to match the thickness of the release material.

[0008] Even for products that do not require adhesiveness, such as cake picks, materials with release agents are used in order to control the production volume after cutting multiple cake picks from a single sheet material. This makes it difficult to reduce the unit price of cake picks.

[0009] The present invention has been made to solve the above-mentioned problems in the conventional technology, and its object is to provide a sheet material processing device that uses a punching die having punching blades all of the same blade height, and is capable of fixing a large number of labels, etc., cut from sheet material that does not have a release material layer to a sheet, and that produces high-quality labels etc. after separation. [Means for solving the problem]

[0010] The sheet material processing device of the present invention, which solves the above-mentioned conventional problems, comprises a punching die for multiple pieces, and a backing plate arranged opposite the punching die on which the sheet material to be punched is placed, the backing plate having a groove that intersects with the blade contact portion that comes into contact with the punching blade of the punching die, and which is characterized in that the groove simultaneously produces a connector that connects together the items cut by the punching blade.

[0011] Further, the grooves engraved on the receiving plate constituting the sheet material processing device according to the present invention are formed for the blade contact portion forming a closed loop. Effect of the Invention

[0012] According to the present invention, even when a plurality of small pieces are taken from a sheet material, the sheet material processing device can connect the fully punched portions with joints, and since the joints are extremely small and have a weak bonding strength, no joint traces remain on the small pieces after separation.

[0013] Furthermore, even if the small pieces are completely punched out and would otherwise be separated, each small piece is connected to the other parts other than the punched pieces by connectors, so that the small pieces can remain fixed together as a single sheet. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a punching die according to an embodiment of the present invention. [Diagram 2]FIG. 1A is a diagram showing the relationship between a punching die, a sheet material, and a receiving table in an embodiment of the present invention; FIG. 1B is a diagram showing a state when a punching blade in an embodiment of the present invention abuts against a sheet material on a receiving plate; [Diagram 3] (a) is a diagram showing a cutting edge contact mark on a backing plate in an embodiment of the present invention; (b) is a diagram showing a cutting edge contact mark and a groove formed on a backing plate in an embodiment of the present invention; [Figure 4] FIG. 1 is a diagram showing a processed sheet according to an embodiment of the present invention; [Diagram 5] FIG. 13 is a diagram showing the positional relationship between the cutting edge contact portion on the backing plate and the grooves to be cut in the embodiment of the present invention. [Figure 6] A diagram showing the conventional cutting tool used to simultaneously perform full punching and half-cutting DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The present invention will now be described in detail with reference to the drawings.

[0016] Fig. 1 is a diagram showing a punching die attached to a sheet material processing device in an embodiment of the present invention. In Fig. 1, the punching die is composed of six rectangular punching blades 11, which cut out cake picks to be used for decorating cakes. The six rectangular punching blades have the same height.

[0017] FIG. 2 is a diagram showing the relationship between the punching die, the sheet material, and the receiving stand. 2(a), the punching die 10 is formed of a punching blade 11 extending perpendicular to the paper surface and a blade fixing part 15 for fixing the blade, and the blade fixing part is configured by fixing an aluminum back plate 13 and an acrylic resin base material 14. The punching blade 11 is fixed to the blade fixing part 15.

[0018] The punching blade 11 in this embodiment is a spring blade, and is formed by bending a strip of steel plate into the shape shown in FIG.

[0019] The sheet material 30 does not have a layer of a release material and is made of only a layer of synthetic paper with a thickness of 250 micrometers. Synthetic paper is a paper-like film made mainly of synthetic resin, and has both the properties of paper and plastic. In this embodiment, the cake pick is made from the synthetic paper sheet material.

[0020] The receiving base 20 is composed of a receiving plate 21 made of acrylic resin having a thickness of 2 mm on the side for receiving the punching die, and a base plate 22 on the back side thereof, the two being joined together so as to be separable.

[0021] Next, a method for processing the receiving plate constituting the receiving base, which is prepared in order to produce cake picks from the sheet material by punching, will be described with reference to the drawings. 3(a) and 3(b) are plan views of the backing plate.

[0022] First, the punching die and receiving stand are set in the sheet material processing device, and the mounting position is adjusted so that the punching blade abuts against the receiving plate of the receiving stand with a gap of 0 millimeters.

[0023] Next, the position of the cutting edge is marked on the backing plate using a punch die. For example, carbon paper is placed on the backing plate, and the punch blade is butted against the backing plate to leave a cutting edge contact mark 24 as shown in Figure 3(a). The position of this cutting edge contact mark and the cutting edge contact part of the present invention refer to the same position.

[0024] Next, grooves 23 are engraved on the receiving plate as shown in FIG. 3(b) so as to intersect with all of the blade contact marks 24 that form the closed loops marked on the receiving plate. The portion of the groove 23 that intersects with the blade contact marks 24 is the "connector" that connects the cake pick produced by the punching die to the other portions of the sheet material, as described below. When the sheet material is synthetic paper with a thickness of 250 micrometers, the width of the groove is preferably about 500 micrometers and the depth is preferably 200 to 400 micrometers. Since the receiving plate 21 is made of acrylic resin, it is easy to process, and since the width and depth of the groove do not require precision, the groove can be easily processed with a plastic cutter or the like.

[0025] The above is the processing procedure for forming the grooves on the surface of the support plate 21 facing the punching die. As a result, the sheet material processing device according to the present invention is provided with a punching die and a backing plate 21 having a groove that intersects with the marked blade contact mark 24 (blade contact portion).

[0026] Next, a process for cutting out cake picks using the sheet material processing apparatus according to the present invention will be described.

[0027] First, the sheet material processing device sends a roll of sheet material to a predetermined position on the receiving table 20.

[0028] Next, the sheet material processing device abuts the punching die 10 against the sheet material placed on the receiving table 20 and punches it out.

[0029] Fig. 2(b) is a diagram showing the state of the punch blade, the sheet material, and the receiving plate when the sheet material 30 is placed on the receiving plate 21 of the sheet material processing device and the punch die is butted against it. Fig. 2(b) is cut along a plane passing through the center line of the groove width, and the punch blade 11 extends in a direction perpendicular to the paper surface.

[0030] In Fig. 2(b), when the punch blade 11 is abutted against the sheet material 30 in a portion of the receiving plate 21 where there is no groove 23, the sheet material 30 is cut as shown by B and C in the figure, but when the punch blade 11 is abutted against the sheet material 30 in a portion of the receiving plate 21 where there is a groove 23, the sheet material 30 is cut from the top surface, but A and B are not cut completely, and a part of the receiving plate side enters the groove 23, resulting in an incompletely cut portion. The portion 31 that enters the groove becomes a very small connection that connects the cut cake pick to the other portions.

[0031] Next, the sheet material processing device sends the processed portion of the rolled sheet material to a cutting position and cuts it to a specified size with a cutting blade. At this time, the unprocessed portion of the rolled sheet material is in a specified position on the receiving table 20, so it is punched out by the punching die 10 in the next process.

[0032] 4 is a diagram showing one processed sheet cut from a roll of sheet material, showing that six final products, namely cake picks 33, have been punched out. Each cake pick 33 is separated from the other parts 34 by a completely cut portion 32 and a joint 31 which is an incompletely cut portion, but is held from the other parts 34 by the joint 31.

[0033] The above is the method for cutting cake picks using the sheet material processing apparatus according to the present invention. Thus, according to the sheet material processing apparatus of the present invention, the joints 31 which become the incomplete cut portions are formed by the grooves 23 in the receiving plate 21, so that the punching die does not require half-punching blades even in the portions where the joints are to be left, and it is sufficient that the blade heights of all the punching blades are the same, and high precision in the blade heights is not required.

[0034] In addition, when multiple cake picks are punched out from a sheet material made of paper or film, a joint is formed that connects the cake picks to the other parts, so even if they are made from a sheet material that does not have a layer of release material, the cake picks do not separate from the processed sheet even after being punched out, and can remain fixed in place. This makes it easy to manage the number of cake picks etc. that are made.

[0035] It is possible to create a processed sheet with a connection by designing the shape of the punching blade of the punching die so that it has a connecting part that is continuous with the cake pick. In this case, however, when the final product, the cake pick, is separated, some of the connecting part will remain on the cake pick, making it impossible to produce a product of satisfactory quality.

[0036] Furthermore, even if the joint is created using a method that does not involve a half-punching blade hitting the receiving plate as in the conventional processing device, the joint between the joint and the cake pick part or other parts is not damaged when cut, so the joint strength is higher than that of the joint processed by the processing device of the present invention. Therefore, when the cake pick is separated from the processed sheet, part of the joint is likely to remain on the separated cake pick, making it difficult to maintain the quality of the cake pick.

[0037] In contrast, when produced using the processing device of the present invention, the punch blade reaches the edge of the groove as shown in Figure 2(b), causing significant damage to the joint and reducing the strength of the joint. Therefore, when the cake pick is removed from the sheet material, no discernible joint remains, and the quality of the cake pick can be maintained at the same level as cake picks produced using a conventional manufacturing method that uses a layer of release material.

[0038] Next, the position of the connection will be described. It is necessary that the binder does not remain on the cake pick in the final product, so it is important to form the binder in a position that will not leave the binder on the cake pick when it is separated.

[0039] When the two parts connected by the connector are separated after a very small connector is formed as in the present invention, the part with the smaller angle of contact with the connector will have a structure that sandwiches the connector, and the connector will remain.

[0040] This will be explained using the drawings. 5(a) is a diagram showing the relationship between the groove 23 cut into the backing plate and the blade contact portion 24 cut by the punch blade, where the shaded portion is the connection. Note that the width t of the groove is wider than the width of the blade contact portion 24, and the length of the groove is arbitrary.

[0041] In the figure, the connector 31 formed at the corner portion is connected to the cake pick A at a larger angle than the other portion B, and the other portion B sandwiches the connector 31. Therefore, when the cake pick A and the other portion B are separated, the connector 31 remains on the other portion B, and not on the cake pick A side.

[0042] For this reason, when cutting the groove 23 into the receiving plate, it is preferable to cut it at the apex of the convex angle on the cake pick side. This makes it possible to prevent the joint from remaining on the cake pick side when the cake pick is separated from the processed sheet.

[0043] Next, a method for adjusting the bonding strength between the cake pick portion and the other portions will be described.

[0044] Depending on the weight of the sheet material and the size of the cake pick, the tiny connections may not be strong enough to hold the cake pick or other parts of the sheet together, causing the cake pick to detach from the finished sheet.

[0045] In such a case, the bonding strength can be increased by forming a joint on a straight line section or by increasing the number of joints, rather than forming a joint at the apex of the convex angle on the cake pick side. In this case, since it is necessary that no joints remain on the final cake pick product, it is not preferable to increase the bonding strength of the joints too much. Rather, it is preferable to increase the number of joints with weak bonding strength to increase the bonding strength of the entire cake pick.

[0046] Furthermore, the strength of the connection between the joint on the straight portion and the cake pick portion or other portion can be adjusted by changing the angle between the blade contact portion and the groove.

[0047] 5(b) and 5(c) are diagrams showing the relationship between the angle and the connection between the groove 23 cut in the backing plate and the blade edge contact portion 24 cut by the punching blade. In Figure 5(b), the angle between groove 23 and blade tip contact portion 24 cut by the punching blade is 90 degrees, and the connection width between the connector and cake pick A, and between the connector and other portions B is t, whereas in Figure 5(c), it is t / sin α, and the smaller the angle α, the greater the connection width with the connector, thereby increasing the degree of bonding between the connector and the cake pick portion, and between the connector and other portions.

[0048] As described above, according to this embodiment, even when a large number of cake picks are cut from a sheet material that does not have a release layer using a punching die with punching blades that all have the same blade height, the fully punched cake picks can be connected to the other parts by the joints formed at the same time, and can be kept fixed to a single processed sheet. Furthermore, since the joints are extremely small and have a weak bonding strength, no traces of the joints remain on the small pieces after separation, so it is possible to produce cake picks of quality that are not inferior to those produced from a sheet with a release material.

[0049] In this embodiment, carbon paper is used to mark the cutting edge contact marks, but this is not limited to the above, and it is also possible to apply colored ink to the cutting edge and press it against the backing plate like a stamp to mark it. Any other method that can mark the backing plate without damaging the cutting edge is acceptable, and is not limited to the above method.

[0050] In addition, in the present embodiment, the punching blade is a spiral blade, but this is not limiting and the punching blade may be an etching blade or the like, and is not particularly limited.

[0051] Furthermore, in this embodiment, the backing plate is an acrylic resin plate, but this is not limiting, and the backing plate can be easily and inexpensively processed in a similar manner using any material that is easy to process. [Industrial Applicability]

[0052] As described above, the present invention is useful for producing cake picks and the like from sheet materials such as paper that do not have a release layer, and is suitable for production using a punching die that can produce multiple pieces. [Explanation of symbols]

[0053] 10 Punching Dies 11 Punching blade 13, 64 Back plate 14, 63 Base material 15 Blade fixing part 20 Cradle 21 Support plate 22 Base plate 23 Groove 24 Cutting edge contact area 30 Synthetic Paper 31 Jumpsuit 32 Completely cut part 33 Cake Pick 34 Other parts 60 Fully punched blade 61 Half-punched blade 62 Blade fixing part 65 Full punching blade through groove 66 Half-punched blade through groove 67 Full punching blade height adjustment groove 68 Half-punched blade height adjustment groove 69 Foundation 70 Sheet-shaped substrate 71 Sealing materials 72 Peeling material

Claims

1. The method includes: a punching die for multiple pieces; and a receiving plate disposed opposite the punching die and on which a sheet material to be punched is placed; The backing plate has a groove that intersects with a blade contact portion that contacts the punching blade of the punching die, The groove simultaneously creates a joint that connects the items cut by the punching blade. A sheet material processing device comprising:

2. The groove engraved on the backing plate is provided for the cutting edge contact portion forming a closed loop.

2. The sheet material processing apparatus according to claim 1 .

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