• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Packaging cutting device; comprising a matrix plate (1) and a punch plate (2) carrying punches (3) and movable between an inoperative position matrix plate (1) and an operative position in which the punches penetrate into housings of the plate matrix (1) making cuts in the packages The punches (3) are interchangeable and comprise an active tip (31) in platelet form, with an integrated centering body (32), of non-circular section; housed tightly, and fixed by means of a removable clamping element in a cavity (21) of the punch plate (2). The active tip (3) rests with its rear surface against the punch holder plate (2) and protrudes from said punch holder plate in a measure of less than 10 millimeters, to avoid its lateral bending or deflection during cutting. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2730120A1
    申请号:ES201830443
    申请日:2018-05-07
    公开日:2019-11-08
    发明作者:Román Olle；Manuel Gonzalez
    申请人:Industrias Tecnologicas de Mecanizacion y Automatizacion SA；
    IPC主号:
    专利说明:

    [0001]
    [0002] Packaging cutting device.
    [0003]
    [0004] Object of the invention.
    [0005]
    [0006] The object of the present invention is a packaging cutting device, which comprises an interchangeable matrix plate and star punch plate, which has suitable characteristics for cutting plastic materials, for example, PLA, PET, PP and other complex sheets of different structures and thicknesses, especially applicable in the manufacture of packaging for food use.
    [0007]
    [0008] Field of application of the invention.
    [0009]
    [0010] This invention is applicable in machines for cutting containers and preferably, but not limited to, packaging intended for the food industry.
    [0011]
    [0012] State of the art
    [0013]
    [0014] In the manufacture of packaging and in particular of packaging for the food industry, it is usual to form packs with a variable number of containers that, once filled with the product in question, are closed by means of a continuous sheet, then it is necessary to carry out the cutting of perimeter areas of the mouths of the containers together with the lid applied on them.
    [0015]
    [0016] In this operation it is known to use devices consisting of a matrix plate and a punch holder plate, conveniently facing each other, the punch holder plate having a series of punches protruding from the surface of the punch holder plate facing the matrix plate and which They are responsible for cutting some peripheral areas of the mouth of the containers and the corresponding lids.
    [0017] The cutting devices currently used have a number of drawbacks both in terms of the difficulty of replacing the cutting punches with others suitable for making cuts with different geometry or cutting materials of different hardness and very abrasive plastics such as PLA and PP strongly loaded
    [0018]
    [0019] Although today all the cutting punches have an acceptable compromise to be able to cut almost all the materials, none of them guarantees an optimum duration of the cutting edges and the quality of the cut containers.
    [0020]
    [0021] This determines that in the case of cutting very abrasive plastic the life of the cutting edges is very low, sometimes 3 or 4 weeks, which means between 500,000 and 800,000 cycles, which is very little knowing that sharpening and replacement of the cutting punches is very high.
    [0022]
    [0023] Another drawback of such devices on the market is that the punches have an advance of 20 or 25 mm. what supposes a height of high step, certain operational restrictions and also flexions during the effort of cutting, especially in the case of the current devices that present every time punches of greater section due to the current design of the containers by the services of marketing.
    [0024]
    [0025] In the existing cutting devices, the punches are practically a part with the punch and blade holder plate, which makes it difficult to cool the punches if necessary, negatively affecting the duration of the cutting edge of the punches.
    [0026]
    [0027] Therefore, the technical problem that arises is the development of a cutting device with a series of features aimed at reducing the cost of spare parts, interchangeability and comfort of the punches to use in each case the most appropriate to the type of materials to be cut; improve the cooling of the punches if necessary; allow the use of materials of great hardness for the manufacture of the tips of the punches considerably increasing the useful life of the same and eliminate the unwanted flexion of the punches during the cutting effort.
    [0028]
    [0029] Description of the invention
    [0030]
    [0031] The packaging cutting device object of this invention; comprising a matrix plate and an interchangeable star punch plate, which allow relative displacement between an inoperative position, or opening, in which the punches remain distanced from the matrix plate; and an operative position in which the punches penetrate into housings of the matrix plate, making cuts in the packages; It presents some constructive peculiarities oriented to satisfactorily solve the problem described above.
    [0032]
    [0033] For this, and according to the invention, this cutting device comprises interchangeable punches having an active platelet-shaped tip, with an integrated centering body of non-circular section; whose centering body is housed tightly, and fixed by means of a removable clamping element, inside a cavity of the punch and knife holder plate having a section formally and dimensionally coincident with the section of the centering body of the punch ; so that in the mounting position the active tip of the punch is supported with its rear surface against the punch and knife holder plate, protruding from it.
    [0034]
    [0035] One of the characteristics of the invention is that the platelet-shaped active tip has a reduced height, less than 10 millimeters, which allows eliminating operational restrictions and bending due to the large decrease in the heights of passage to the punches in in relation to the punches currently used, they have a height of 20 to 25 mm and therefore more flexion during the cutting effort.
    [0036]
    [0037] The centering body of the punch in the punch plate, thanks to its design, machining range, in addition to its interchangeability provides extremely precise tolerances of shape and position, less than 0.003 mm.
    [0038]
    [0039] The characteristics of the device mentioned above allow to achieve a very reduced cost of the punches and spare parts, as well as a better market penetration considering that these wear parts are extremely expensive for industrial uses.
    [0040]
    [0041] The interchangeability and convenience of changing the punches for cutting materials with different characteristics constitutes another important advantage of the invention since a series of packages can be produced for example in PLA and then produce another series in PS by simply changing the tips of the punches to achieve perfect configurations of use depending on the plastic to be cut and its thickness.
    [0042]
    [0043] Another advantage of the invention is the best punch cooling system in case it is necessary to perform thermal regulation and avoid dilation, since the cooling will rise to the tip of the punch through the centering body thereof, avoiding thus the destruction of the cutting edges and increasing the life of the punch.
    [0044]
    [0045] This device allows to use materials of great hardness for the manufacture of the tips of cut of the punches for example the use of carbide with a hardness superior to 70 HRC (Rockwell hardness) and with a very high stability, which allows that the useful life of the cutting tips reach about 4 million cycles.
    [0046]
    [0047] The features of the invention will be more readily understood in view of the exemplary embodiment shown in the attached figures.
    [0048]
    [0049] Description of the figures.
    [0050]
    [0051] To complement the description that is being made and in order to facilitate the understanding of the characteristics of the invention, a set of drawings is attached to the present specification in which, for illustrative and non-limiting purposes, the following has been represented:
    [0052]
    [0053] - Figures 1 and 2 show elevational views of an embodiment of the cutting device according to the invention, in the open position and in the closed position respectively.
    [0054] - Figure 3 shows a bottom perspective view of the matrix plate and the vertically spaced punch holder plate.
    [0055]
    [0056] - Figure 4 shows a top perspective view of the matrix plate and the vertically spaced punch holder plate.
    [0057]
    [0058] - Figure 5 shows an elevational view of the punch holder plate, partially sectioned by the mounting area of one of the punches, the corresponding punch exploded with respect to said punch holder plate.
    [0059]
    [0060] - Figure 6 shows a view similar to the previous one, in which a punch can be seen mounted in the corresponding cavity of the punch holder plate.
    [0061]
    [0062] Preferred embodiment of the invention.
    [0063]
    [0064] As can be seen in Figures 1 and 2, this cutting device for packages comprises a matrix plate (1) and a punch plate (2) that allow relative displacement between an inoperative position represented in Figure 2 in which the punches ( 3) they remain distanced from the matrix plate (1) and an operative position, represented in figure 2, in which the punches penetrate into housings (11) of the matrix plate (1) referenced in figures 3 and 4, performing cuts in a container not shown and previously arranged on the matrix plate (2).
    [0065]
    [0066] As can be seen in Figures 5 and 6, the interchangeable punches (3) have an active platelet-shaped tip (31) with an integrated centering body (32) that extends along the posterior surface of the active tip (31).
    [0067]
    [0068] In this exemplary embodiment and as can be seen in greater detail in Figure 3, the tip (21) has a starry contour of concave curved sides intended to form the curved corners of the mouth and lid of a yogurt container.
    [0069]
    [0070] However, the tips or platelets (21) of the punches may have different configurations depending on the die cut or cut to be made in the containers.
    [0071] In this specific example, the centering body (32) of the punch has a quadrangular section that fits snugly in the cavity (21) of the punch holder plate (2) that has a section formally and dimensionally coinciding with the section of the mentioned centering body ensuring a positioning of the punch (3) with respect to the punch plate (2) with very high precision.
    [0072]
    [0073] As can be seen in figures 3 and 4, the punch (3) is fixed with respect to the punch holder plate by means of a removable clamping element (4) represented by a screw that is mounted on the punch holder plate (2) with the interposition of a bushing (41) and it is threaded into a hole defined for this purpose at the rear end of the centering body (32) of the punch (3).
    [0074]
    [0075] In figures 1 and 3 this device comprises columns (5) for guiding the punch plate (2) with respect to the matrix plate (1) in the opening and closing movements of the cutting device.
    [0076]
    [0077] Once the nature of the invention has been sufficiently described, as well as a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the described elements may be modified, provided that this does not imply an alteration. of the essential features of the invention that are claimed below.
    权利要求:
    Claims (3)
    [1]
    1. - Packaging cutting device; comprising a matrix plate (1) and a punch holder plate (2) enabled relative displacement between an inoperative position, or opening, in which the punches (3) of the punch holder plate (2) remain distanced from the plate matrix (1) and an operative position in which the punches (3) penetrate into housings of the matrix plate (1) making cuts in the packages; characterized in that the punches are interchangeable and comprise an active tip (31) in platelet form, with an integrated centering body (32), of non-circular section; whose centering body (32) is housed tightly, and fixed by means of a removable clamping element, inside a cavity (21) of the punch holder plate (2); said cavity (22) presenting a section formally and dimensionally coinciding with the section of the centering body (32) of the punch (3); so that in the mounting position the active tip (3) rests with its rear surface against the punch holder plate (2) and protrudes from said punch holder plate.
    [2]
    2. - Device according to claim 1, characterized in that the active tip or platelet has a height of less than 10 millimeters.
    [3]
    3. - Device according to claim 1, characterized in that the active tip (31) and the centering body (32) of the punches (3) form a mono-piece body manufactured with a hardness material greater than 70 HRC (Rockwell hardness ).
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3566835B1|2020-08-05|
    DK3566835T3|2020-10-26|
    ES2730120B2|2021-06-28|
    PL3566835T3|2021-01-11|
    EP3566835A1|2019-11-13|
    ES2826890T3|2021-05-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2367590A1|1976-10-13|1978-05-12|Applic Plastique Mec Elec|Beakers cut from thermoplastics sheet after filling - by single press which stamps out gussets then separates beakers|
    EP1415736A1|2002-10-31|2004-05-06|Trenkle & Schneider GmbH & Co. KG|Combined punching and cutting tool|
    DE10260064A1|2002-12-19|2004-07-01|Convenience Food Systems Wallau Gmbh & Co Kg|Tool for cross cutting of packing materials has knife interacting with knife rail, and at least one punch interacting with die, whereby punch is in advance of knife during cross cutting, with knife and knife rail interacting like shears|
    FR3022818A1|2014-06-30|2016-01-01|Sogameca Sas|IMPROVEMENT TO TOOLS FOR GROOVED MATRIX CUTTING OF MULTIPLE OBJECTS IN SHEET MATERIAL|
    US1070887A|1912-04-22|1913-08-19|Stephen D Hartog|Multiple punch and die.|
    DE2853267A1|1978-12-09|1980-07-24|Applic Plastique Mec Elec|DEVICE FOR CUTTING OUT CONTAINERS|
    FR2661341B2|1988-09-13|1994-09-09|Pignon Guy|DEVICE FOR FIXING ELEMENTS OF PRESS TOOLS IN THEIR SUPPORT.|
    DE4304951C2|1993-02-18|1997-09-11|Wachsmuth & Co Werkzeugbau|Tool for punching single and multiple containers made of plastic film|
    DE19521604C1|1995-06-14|1997-04-17|Wachsmuth & Co Werkzeugbau|Blades adjusting device for multi-compartment stamping installation|
    DE102009022931A1|2009-05-27|2010-12-09|CIP - Centrum für Innovative-Produktionssysteme GmbH i.G.|Punching tool and method of making the same|
    法律状态:
    2019-11-08| BA2A| Patent application published|Ref document number: 2730120 Country of ref document: ES Kind code of ref document: A1 Effective date: 20191108 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201830443A|ES2730120B2|2018-05-07|2018-05-07|PACKAGING CUTTING DEVICE|ES201830443A| ES2730120B2|2018-05-07|2018-05-07|PACKAGING CUTTING DEVICE|
    ES19000207T| ES2826890T3|2018-05-07|2019-04-30|Container cutting device|
    DK19000207.1T| DK3566835T3|2018-05-07|2019-04-30|CONTAINER CUTTING DEVICE|
    EP19000207.1A| EP3566835B1|2018-05-07|2019-04-30|Container cutting device|
    PL19000207T| PL3566835T3|2018-05-07|2019-04-30|Container cutting device|
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