EP2586578A1 - Dispositif et procédé destinés à fabriquer des tampons de coton hydrophile - Google Patents

Dispositif et procédé destinés à fabriquer des tampons de coton hydrophile Download PDF

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Publication number
EP2586578A1
EP2586578A1 EP20120405110 EP12405110A EP2586578A1 EP 2586578 A1 EP2586578 A1 EP 2586578A1 EP 20120405110 EP20120405110 EP 20120405110 EP 12405110 A EP12405110 A EP 12405110A EP 2586578 A1 EP2586578 A1 EP 2586578A1
Authority
EP
European Patent Office
Prior art keywords
cutting
die
cutting edge
textile
embossing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20120405110
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German (de)
English (en)
Inventor
Guy Petignat
Erich Matter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROWEG HOLDING AG
Original Assignee
ROWEG HOLDING AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROWEG HOLDING AG filed Critical ROWEG HOLDING AG
Publication of EP2586578A1 publication Critical patent/EP2586578A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/449—Cutters therefor; Dies therefor for shearing, e.g. with adjoining or abutting edges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • Y10T83/9425—Tool pair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • Y10T83/9428—Shear-type male tool

Definitions

  • the invention relates to an apparatus and a method for the production of textile parts, in particular cotton pads, from a textile fabric, in which the textile parts are separated from the textile fabric out.
  • a device comprises at least a first tool component having a receiving opening for receiving separated textile parts, as well as at least one, cooperating with the first tool component, second tool component with a cutting tool for separating the textile parts from the fabric.
  • the first and second tool components are in this case designed to separate out the textile parts relative to each other to move toward each other.
  • Non-woven textiles in particular non-woven fabrics, are experiencing an ever widening use, in particular in the technical, medical and cosmetic fields.
  • the non-woven textiles which are characterized in particular by a composite of non-directional fibers, are often in the form of extensive fabrics or webs, z. B. manufactured as a roll product.
  • textile surface parts here called textile parts, are separated from this fabric.
  • These textile parts are either already end products or they are intermediates, which are the subject of further processing into end products.
  • a flat fleece separate wadding pads application in cosmetics, eg. As for cleaning the face and make-up and make-up removal.
  • z. B. cotton pads by punching out of a fabric to produce For this purpose, a tool is used which comprises two tool blocks.
  • a lower tool block which is usually stationary, contains a plurality of rows of dies.
  • the upper tool block includes a plurality of rows of work stamps.
  • Each work stamp is assigned a die.
  • the pairing of work ram and die cooperating with one another during the standing process forms a punching unit.
  • the work stamp contains a punching tool and is guided movably towards the die.
  • the die contains a receiving opening for receiving the punched cotton pads.
  • the punch of the work stamp contains a blade, which forms a closed sectional contour, which is usually circular.
  • the blade of the punching tool is guided with high force against a flat support surface which surrounds the die opening, wherein the fabric is squeezed and separated between the support surface and the blade.
  • the die opening accordingly has a smaller circumference than the cotton pad, which is punched out on the support surface surrounding the die opening.
  • the said flat bearing surface assumes the function of an anvil, on which the blade of the punching tool impinges and leads to a pinching of the fibers in the textile fabric until it is severed.
  • stamping process according to the prior art, however, squeezing forces are not shear forces, as z. B. in a conventional cutting process is the case.
  • the present method and the associated device have the disadvantage that the blade of the working punch, which is guided in each case with high force onto the flat contact surface of the die during the punching process, is relatively quickly blunted and loses its release effect. The loss of separation must in turn be compensated by an increase in the already high stamping force.
  • the application of relatively high punch forces also lead to a correspondingly high energy consumption during operation.
  • the high punching forces and the device parts must be designed according to robust and high quality, which in turn increases the tooling costs.
  • the high forces which act on the device parts generally lead to higher tool and machine wear.
  • Wadding is to be understood as a basically loose structure of fibers and / or threads which only or almost exclusively result in a volume structure due to their adhesion to one another.
  • the textile fabric from which the textile parts, in particular cotton pads, are produced is preferably a nonwoven or nonwoven fabric or a nonwoven fabric.
  • the fleece is analogous to cotton preferably from loosely connected fibers, which are not yet or mostly not yet connected. The strength of a fleece is based only or almost exclusively on the fiber's own liability. However, it can be influenced by work-up (solidification).
  • the textile fabric can be constructed in one or more layers.
  • the fibers or threads of the textile parts, in particular the cotton pads, or of the textile fabric are preferably made of cellulose, in particular of cotton.
  • the fibers or threads may also consist of viscose or of synthetic materials such as polyester.
  • the fibers may in particular also comprise microfibers. Mixtures of the aforementioned materials are also possible.
  • the invention is characterized by the fact that the textile parts, such as cotton pads, are not punched as described above from a textile sheet material but rather are cut out.
  • the first tool component is designed as a die with a first cutting edge running around the die opening and the second tool component as a working punch with a second cutting edge.
  • the second cutting edge is in particular also formed closed closed.
  • a pairing of work ram and die cooperating with each other during the cutting process forms one cutting unit each.
  • the die and the working punch are now arranged in the device and guided relative to each other, that for cutting of textile parts, the second cutting edge past the first cutting edge, at least partially feasible in the die opening.
  • the second cutting edge thus slides past the first cutting edge, which is to be understood as a relative movement in which it is not yet necessary to determine which cutting edge is actively moved.
  • the two cutting edges together form a closed sectional contour, which describes the outline of the separated textile part.
  • the closed sectional contour is preferably circular and the textile parts produced with this Thomasachir are preferably cotton rondelles.
  • the cut contour may also be oval or polygonal or have another closed shape.
  • the second cutting edge preferably slides without clearance or clearance past the first cutting edge into the die opening, as is usual in a shear cutting.
  • the projections of the first and second cutting edges, which correspond to the sectional contour are therefore practically congruent with one another taking into account possible tolerances.
  • the second cutting edge can, for. B. are introduced relative to the first cutting edge by 1 mm to 1.5 mm in the die opening to perform the cut.
  • the tolerances are preferably in very small areas of z. B. 1/1000 to 1/100 mm.
  • the first cutting edge is now preferably formed from two cutting surfaces which meet one another at an angle of approximately 90 ° (degrees of angle). Of course, the angle should include tolerance-related deviations from these 90 ° with.
  • the first cutting edge surrounding the die opening thus constitutes the edge of a step.
  • a first cutting face preferably forms a wall of the die recess.
  • a second cutting surface is preferably part of a die support surface for the textile fabric.
  • the second cutting edge is preferably formed of two at an angle of 45-90 ° (degrees), in particular of approximately 90 °, meeting each other cutting surfaces.
  • the second cutting edge of the work ram preferably includes a first cutting surface which is parallel to the first cutting surface of the first cutting edge of the die. These two cutting surfaces slide past each other during the cutting process.
  • the two mutually parallel cutting surfaces are suitably also parallel to the direction of movement of the tool components, in particular parallel to a stroke direction of the work stamp.
  • the two cutting edges can be formed and arranged relative to each other and be feasible in the direction of movement, that the first and second cutting edge during the cutting at least partially and preferably over their entire extent in each case form an angle to each other, so do not lie parallel to each other, and perform a scissor-like cut.
  • the first cutting edge is preferably in a geometric plane. However, the course of the first cutting edge may also be jagged or undulating. The deflection of the waves, curves or points is suitably parallel to the direction of movement of the tool components.
  • the second cutting edge is preferably also in a geometric plane. However, the course of the second cutting edge may also be serrated, wavy or curvy. The deflection of the waves, curves or serrations is here also expedient parallel to the direction of movement of the tool components.
  • the two planes can be parallel or at an angle to one another.
  • Such an angle can z. B. greater 0 ° and less than 30 °, preferably less than 15 °.
  • the two mutually parallel planes are preferably perpendicular to the direction of movement of the tool components.
  • the cutting edges meet simultaneously over their entire circumferential length.
  • the two levels are at an angle to each other or are the two cutting edges at least partially not parallel to each other by z. B. one of the cutting edge has a serrated, wavy or curved curved course, so intersect the cutting edges during the cutting process at least partially each at an angle. In this way, the cutting process can be optimized.
  • the working punch contains a cutting insert with a hollow cylindrical cutting section, on the front side of which the closed cutting edge is arranged.
  • the hollow cylindrical cutting section is directed with its cutting edge to the die.
  • the cutting insert is preferably designed as a cutting ring, with a ring-shaped or circular-shaped cutting edge.
  • the work stamp is designed in particular as a hollow die.
  • the hollow punch preferably contains a guided in this ram for ejecting the textile parts from the die opening.
  • the die has a contact surface, for the edge section of the textile part, set back relative to the first cutting edge in the direction of the cutting stroke or in the ejection direction of the work die into the die opening.
  • the support surface is in particular part of a shoulder or step in the die cavity.
  • the support surface may be formed as a continuous or discontinuous surface.
  • the support surface is in particular annular.
  • the bearing surface is at an angle, in particular perpendicular to the direction of movement of the tool components or to the direction of the cutting stroke.
  • the support surface preferably forms a common corner region with the wall of the die recess, which also forms the first cutting surface of the first cutting edge.
  • the support surface or the step or shoulder, which forms the support surface, and the wall of the die recess are preferably an integral part of a common, one-piece manufactured Matrizenbauteils.
  • the bearing surface but can also, as explained below, be part of a separately formed embossing member.
  • the support surface of the textile part is during and / or after cutting out of the support surface in the recess of the die.
  • One function of the support surface is, inter alia, to ensure that the textile part is arranged in the depression of the die after the cutting process and in particular before or during the ejection process.
  • An inclination of the textile part in the die recess which would be disadvantageous for the subsequent ejection and stacking process, is therefore practically impossible. This ensures the formation of an ordered, even stack of cut-out textile parts.
  • the textile part resting on the support surface in the ejection direction which preferably corresponds to the direction of the cutting stroke, is ejected from the die.
  • the textile part is moved away from its contact position on the support surface and through a passage opening surrounded by the support surface and fed to a storage space.
  • the working punch preferably contains a bearing surface for the textile part directed towards the end face.
  • the end face is preferably annular. Contains the work stamp a cutting ring, the end face is preferably formed by the cutting ring.
  • the end face preferably forms a second cutting surface of the second cutting edge.
  • the end face preferably extends radially outward to the second cutting edge.
  • the end face is preferably at an angle and in particular perpendicular to the direction of movement of the tool components or of the cutting stroke.
  • the device is preferably designed so that the end face of the work ram and the support surface for the textile part can cooperate with each other in such a way that the textile part can be pressed or squeezed flat in an edge region as part of a cutting process.
  • the end face of the work ram during the cutting process is introduced into the die opening so far that the textile part is clamped and pressed between the end face of the cutting ring and the support surface. It is a flat pressing force exerted on the edge region of the textile part, hereinafter referred to as edge pressure.
  • the strength of the edge pressure can be adjusted depending on the textile materials to be processed. This is done by adjusting the gap size between the support surface and the end face in the maximum insertion depth of the end face.
  • the gap size can z. B. 0.1 mm or more.
  • the width of the end face and, correspondingly, the width of the edge pressing can be, for example, 0.3 to 2 mm, in particular 0.3 to 0.7 mm.
  • the width of the end face is preferably smaller than the width of the support surface for the textile part. This also means, in particular, that the width of the end face is smaller than the distance between the die wall forming a cutting face and a second pre-knitting contact face in the supporting face.
  • the width of the edge pressure in the edge region of the textile part is preferably smaller than the distance between the embossment in the edge region and the end edge of the textile part.
  • the working punch and in particular the cutting ring may have a connecting surface which adjoins the end face and is arranged radially inwards, which is recessed counter to the direction of the cutting stroke or the ejection direction.
  • This connection surface is adjacent, for example, to an embossing insert of the work stamp.
  • the connection area is also appropriate set back relative to the support surface, so that in the region of the connection surface no or a smaller edge pressure is exerted on the textile part.
  • the edge pressure is preferably annular. It can be designed to be continuous or interrupted.
  • the edge pressure in the edge region of the textile part causes a local compression of the fiber material. Accordingly, the haptics in the edge region of the textile part changed. The stronger the edge pressure, the harder the grip in the edge area.
  • a stamping insert with a first pre-effective edge For the purpose of attaching an edge embossing on the textile part of the work stamp contains in development of the invention, a stamping insert with a first pre-effective edge, which is directed towards the die.
  • the embossing insert preferably contains a hollow cylindrical embossing section with a frontally arranged on this pre-effective contact surface.
  • the hollow-cylindrical embossing section or its pre-effective contact surface arranged on the end face preferably has the same circumferential geometry as the hollow-cylindrical cutting section or the cutting edge arranged on its end side.
  • the embossing insert is preferably arranged concentrically within a hollow cylindrical cutting section of the cutting insert.
  • the embossing insert is preferably mounted on the working punch via an element which can be elastically deformed in the direction of movement of the work punch or in the stroke direction.
  • the elastic element is arranged behind the embossing insert on the working punch, viewed from the die.
  • the embossing insert is elastically spring-mounted in the direction of movement.
  • the working punch contains a ring-shaped embossing die which is arranged concentrically with respect to the cutting ring and forms a first contact surface having a positive effect.
  • the first pre-effective contact surface may be formed as a continuous or discontinuous surface, which z. B. extends frontally along the hollow cylinder circumference of the embossing insert.
  • the contact surface may also consist of frontally along the hollow cylinder circumference arranged embossing edges, in particular cutting edges exist.
  • the contact surface may in particular be formed as a continuous or discontinuous annular surface or consist of embossing edges, in particular cutting edges, arranged along the annular circumference of the embossing die.
  • the first pre-effective contact surface can therefore also be composed of a plurality of partial surfaces, by means of which z. B. a geometric pattern can be embossed or pressed into the textile part.
  • the first pre-effective contact surface protrudes along the direction of movement of the tool components relative to the second cutting edge.
  • This arrangement takes into account the fact that the second pre-effective contact surface of a counter-organ, also referred to as embossing element described below, is slightly recessed relative to the first cutting edge into the die opening.
  • an additional embossing member is preferably arranged in the die opening.
  • the embossing member has a second pre-effective contact surface offset from the first cutting edge in the die opening.
  • the second contact surface is thus in fact in the die opening.
  • the embossing member or the second pre-effective contact surface can be integrated into the support surface for the textile part.
  • the pre-effective contact surface can be formed by the step or shoulder, which contains the support surface for the textile part. That is, the embossing member can be formed by the support surface or by the associated shoulder or step.
  • the embossing element and the wall of the die recess, which forms the first cutting edge for the first cutting edge, are preferably an integral part of a common, one-piece die component.
  • the embossing element can also be designed as a separate, built into the die component.
  • the embossing member may be formed as a hollow cylinder or with a hollow cylinder portion, with an end face directed towards the working punch.
  • the embossing element is designed in particular as a stamping bush.
  • the support surface for the textile part is part of the hollow cylinder or hollow cylinder section and in particular the embossing sleeve.
  • the second pre-effective contact surface is z. B. frontally disposed on the hollow cylinder or the hollow cylindrical portion of the embossing member or the embossing box.
  • the second pre-effective contact surface may be formed as a continuous or interrupted, frontally circumferential surface, such as annular surface, or from along the circumference, in particular ring circumference, the embossing member frontally arranged embossing edges, in particular cutting edges exist.
  • the second pre-effective contact surface can therefore also be composed of a plurality of partial surfaces, by means of which z. B. a geometric pattern can be embossed or pressed into the textile part. The second contact surface can abut the cutting surface of the first cutting edge.
  • the second pre-effective contact surface cooperates for the purpose of introducing an edge embossing in the textile part with the first pre-effective contact surface of a stamping die, z. B. according to the above embodiment.
  • the edge embossing may include a local deformation of the fiber structure and / or the local introduction of cuts in the edge region. Furthermore, the edge embossing can also include a local punching or cutting of fiber material in the edge region.
  • one of the pre-effective contact surfaces in particular the first contact surface, as described above, can be formed from one or a plurality of edges or cutting edges.
  • heating means for heating the embossing insert in the working punch and / or embossing member in the die can be provided.
  • the work stamp with respect to the direction of gravity, is an upper work train component and the die a lower tool component.
  • the matrix preferably forms a support surface for the textile fabric.
  • the Matrizenauflage Design is z. B. arranged horizontally.
  • the device now contains a plurality of side by side, e.g. in several rows, arranged cutting units.
  • a cutting unit is designed for cutting textile parts from the sheet material and each includes a working punch and a die.
  • the Matrizenauflage Structure is preferably formed as a continuous surface, which extends over a plurality of juxtaposed cutting units.
  • the Matrizenauflage Structure is accordingly broken by a plurality of, preferably arranged in rows next to each other, die openings.
  • the textile fabric can preferably be fed continuously as a material web to the device.
  • the cutting units or the working punches of the individual cutting units are therefore preferably operated or moved in common mode via a common actuator system.
  • the work stamp is lowered to execute the cutting process in a working cycle to the die opening. This corresponds to the so-called cutting stroke.
  • the matrix remains preferably stationary. After completion of the cutting process and a possible embossing the work stamp is pulled back up to its original position and completed the power stroke. The work stamp thus completes a work stroke.
  • the die is guided to the work stamp, or that both tool components are moved, for. B. that the two tool components are guided in opposite directions towards each other or away from each other.
  • the direction of movement of the tool component (s) is preferably parallel to the direction of gravity.
  • an edge embossing on the textile part is made during or after the passing of the second cutting edge on the first cutting edge and before the retraction of the second cutting edge of the work die from the die opening in the die opening.
  • an edge pressure is applied to the textile part during and / or after the passage of the second cutting edge past the first cutting edge and before the second cutting edge of the work ram is withdrawn from the die opening in the die opening.
  • the working punch contains a cutting insert with a cutting edge and an embossing insert which forms a first pre-effective contact surface.
  • An embossing element is arranged in the die opening, which has a second pre-effective contact surface offset from the first cutting edge in the die opening. The embossing insert is guided together with the cutting insert to the die out.
  • the embossing insert and the cutting insert are arranged relative to one another and moved relative to one another in such a way that the embossing insert with its pre-effective contact surface only interacts with the pre-effective contact surface of the embossing member for the purpose of embossing after the severing cut has been made.
  • the die is movable relative to the cutting ring to the die and is guided relative to the cutting ring, that the die with its first pre-effective contact surface only during or after performing the separating cut with the second pre-effective contact surface of the embossing member for the purpose of execution an imprint interacts.
  • work steps B and C are optional.
  • the method according to the invention can comprise only work step A, work steps A and B or work steps A, B and C.
  • the device according to the invention and the associated method have the advantage that the textile parts or cotton pads are separated from the textile fabric by a cutting process.
  • the fibers are separated between the cutting edges, producing a precise cut.
  • the cutting process also requires less power and correspondingly less work in contrast to punching. For example, to cut out the cotton pads half to one-third of the previously used for punching the cotton pads power is sufficient. As a result, the wear on tool and machine parts can be reduced and energy saved.
  • the actuator system for generating the cutting force due to the lower power requirement can be redimensioned accordingly.
  • the tool can generally be constructed lighter and with less expensive materials.
  • the tool components therefore require much less maintenance compared to the punching blades according to the prior art, so that the downtime the device due to maintenance work, such. B. replace punching tools, can be reduced.
  • FIGS. 1 a and 1b show a punching device 101 for punching cotton pads from a pulp web according to the prior art.
  • the punching device 101 comprises an upper frame 119 and a lower frame 123.
  • the punching device 101 further comprises a plurality of punching units 118 each having a die 102 and a working punch 103 which cooperate with each other.
  • the working punches 103 are arranged in the upper frame 119.
  • the dies 102 are arranged with their die opening 104 in the subframe 123.
  • a pair of work dies 103 and die 102 each form a punching unit 118.
  • the working punch 103 is formed as a hollow punch and includes an outer punch ring 105, which forms a punching edge 107.
  • the punching edge 107 of the punching ring 105 cooperates with a flat bearing surface 114 of the die 102, which surrounds the die opening 104.
  • the working punch 103 further includes an inner annular die 110 for attaching an edge embossing on the cotton pad.
  • the embossing punch 110 has a pre-effective contact surface, which cooperates with the flat bearing surface 114 of the die.
  • each counter-holder punch 117 are arranged in the upper frame 119. The counter-punch 117 serve to clamp the web on the support surface 114 and are guided against this slidably.
  • the punching edge 107 of the punching ring 105 cooperates with the flat bearing surface 114 of the die 102, which here exercises the function of an anvil.
  • the punching goes with the squeezing of the fibers in the Area of the punching edge 107 associated, which is associated with a considerable compressive force which is transmitted through the punch ring 105 on the fiber structure.
  • the embossing stamp 110 or its pre-effective contact surface likewise interacts with the flat bearing surface 114 of the die 102.
  • the pre-effective contact surface of the bearing surface 114 lies within the annular punching surface and concentric with it, but outside the die opening 104.
  • the work stamp 103 also includes a plunger for ejecting the punched cotton pads through the die opening 104 in a storage space 122. Since the punching edge 106 outside of the die opening 104 strikes the support surface 114 of the die 102, the die opening 104 has a smaller diameter than that cotton wool pad.
  • FIGS. 2 . 3a and 4 show a particular embodiment of an inventive device for separating cotton pads from a textile sheet material.
  • the inventive device has a similar basic structure as the punching device described above FIG. 1 ,
  • the device 1 also comprises a top frame 19 and a bottom frame 23.
  • the device 1 further comprises a plurality of cutting units 18, each with a die 2 and a working punch 3, which cooperate with each other during the cutting operation.
  • the working punches 3 are each arranged in the upper frame 19.
  • the matrices 2 are each arranged with their die openings 4 in the sub-frame 23.
  • the die 2 forms a first, closed cutting edge 6, which surrounds the die opening 4 and represents the boundary of the die opening 4 to the die support surface 14.
  • the first cutting edge 6 is formed by two, at a right angle hitting cutting surfaces 8 a, 8 b, wherein a first Cutting surface 8a forms a wall of the die opening 4 and is oriented parallel to the stroke direction R of the punch and a second cutting surface 8b is part of Matrizenauflage Chemistry 14 and is arranged perpendicular to the first cutting surface 8a.
  • the working punch 3 is formed as a hollow punch and includes an outer cutting ring 5, which forms a second, closed, annular cutting edge 7.
  • the second cutting edge 7 is formed by two cutting surfaces 24a, 24b which meet at a right angle, a first cutting surface 24a being arranged parallel to the stroke direction R of the punch and a second cutting surface 24b correspondingly perpendicular thereto.
  • the second cutting surface 24b is formed as an end face, which cooperates with a bearing surface 30 described below for exerting an annular edge pressure on the cotton pad 21.
  • the working punch 3 further includes an inner annular and the cutting ring 5 concentrically arranged die 10 for attaching an edge embossing on the cotton pad 21.
  • the die 10 is against the top, so on one of the die 2 opposite side via an elastic damping element 15, z. B. Vulkollan, attached to the work stamp 3 and the cutting ring 5 and stored.
  • the embossing punch 10 has a first, pre-effective contact surface 12, which opposite the cutting edge 7 of the cutting ring 5 z. B. protrudes by 1-1.4 mm, in particular 1.2 mm.
  • the die 2 has a base 16, which may also be formed as an elastic damping element.
  • the pad 16 is supported, for example via a counter-holder plate (not shown) on the subframe 23.
  • a stamping bush 11 is arranged on the die 2 and in the die opening 4 .
  • the embossing bushing 11 forms a bearing surface 30 for the cotton pad 21, which is set back in the direction of the cutting stroke R relative to the first cutting edge 6 in the die opening 4.
  • the support surface 30 is perpendicular to the stroke direction R.
  • the support surface 30 is part of a radially formed in the die opening 4 through the embossing box 11 shoulder. Called this shoulder or step causes at least local narrowing of the die opening. 4
  • the contact surface 30 includes a second, pre-effective contact surface 13. This contact surface 13 is also set back relative to the first cutting edge 6 in accordance with the die opening 4.
  • the pre-effective contact surface 13 is arranged in a radially inner region of the annular bearing surface 30.
  • the support surface 30 or the second contact surface 13 is set back relative to the first cutting edge 6, for example, by 1 to 3 mm, in particular by 1.5 mm in the die opening 4.
  • the embossing can 11 is fixed in the die opening 4 between the die pad 16 and the die 2.
  • the embossing bushing 11 has an annular shoulder on the outer circumference, which is embedded or clamped between the die 2 and the base 16 and thus prevents the embossing bushing 11 from shifting along the stroke direction.
  • the support surface 30 with the second impact-effective contact surface 13 is formed as an annular surface which abuts the first cutting surface 8a of the first cutting edge 6.
  • the width of this ring surface is z. B. 1.5 to 2.5 mm, in particular 2 mm.
  • the second pre-effective contact surface 13 cooperates for the purpose of introducing an edge embossing in the cotton pad 21 with the first pre-effective contact surface 12 of the embossing die 10, z. B. according to the above embodiment.
  • the edge embossing causes in the present embodiment, the local introduction of cuts combined with a local deformation of the fiber structure in Border area.
  • the first pre-effective contact surface 12 of the embossing punch 10 comprises a plurality of edges, which form line-shaped contacts to the second contact surface 13 in the embossing position.
  • a counter-punch 17 is arranged in each case in the upper frame 19.
  • the counter-punch 17 is used for clamping the sheet material on the support surface 14 and is guided for this purpose under construction of a contact pressure to this slidable.
  • the counterstamp 17 is likewise guided against the surface material 20 or against the support surface 14 by means of a lifting movement rectified to the stroke direction R of the work ram 3.
  • FIG. 3b shows a variant of the arrangement according to FIG. 3a , The arrangement according to FIG. 3b However, it is also in a device according to FIG. 2 and 4 used.
  • the die 52 also forms a first, closed cutting edge 56 which surrounds the die opening 54 and represents the boundary of the die opening 54 to the die support surface 64.
  • the first cutting edge 56 is formed by two orthogonal cutting surfaces 58a, 58b, wherein a first cutting surface 58a forms a wall of the die opening 54 and oriented parallel to the stroke direction R of the punch and a second cutting surface 58b is part of the die support surface 64 and is arranged perpendicular to the first cutting surface 58a.
  • the working punch 53 is designed as a hollow punch and contains an outer cutting ring 55, which forms a second, closed, annular cutting edge 57.
  • the second cutting edge 57 is formed by two cutting surfaces 74a, 74b which meet at a right angle, wherein a first cutting surface 74a parallel to the stroke direction R of the punch and a second cutting surface 74b is arranged perpendicular thereto.
  • the second cutting surface 74b is formed as an end face, which cooperates with a bearing surface 50 described below for exercising an annular edge pressure on the cotton pad 21.
  • the connection surface 75 is adjacent to an embossing stamp 60 described below.
  • the working punch 53 further includes an inner annular and the cutting ring 55 concentrically arranged die 60 for attaching an edge embossing on the cotton pad 21.
  • the die 60 is against the top, so on one of the die 52 opposite side via an elastic damping element 65 on Working stamp 53 or attached to the cutting ring 55 and stored.
  • the embossing punch 60 has a first, pre-effective contact surface 62, which projects with respect to the cutting edge 57 of the cutting ring 55.
  • the die 52 also has a base 66, which may also be formed as an elastic damping element.
  • the pad 66 is supported, for example via a counter-holder plate (not shown) on the sub-frame.
  • the die 52 furthermore has a bearing surface 50, which is arranged offset in the direction of the cutting stroke R in the die opening 54.
  • the support surface 50 is formed by a radially arranged in the die opening, annular shoulder. This shoulder or step causes an at least local narrowing of the die opening 54.
  • the bearing surface 50 is designed as an annular surface which adjoins the cutting surface 58 a of the first cutting edge 56.
  • the support surface 50 is integrally connected to the cutting surface 58a.
  • the contact surface 50 includes a second, pre-effective contact surface 63. This contact surface is also set back relative to the first cutting edge 56 in accordance with the die opening 54.
  • the second, pre-effective contact surface 13 is arranged in a radially inner region of the annular bearing surface 30.
  • the support surface 50 or the second contact surface 63 is set back relative to the first cutting edge 56, for example by 1 to 3 mm, in particular by 1.5 mm into the die opening 54.
  • the second pre-effective contact surface 63 cooperates for the purpose of introducing an edge embossing in the cotton pad 21 with the first pre-effective contact surface 62 of the embossing punch 60, z. B. according to the above embodiment.
  • the edge embossing causes in the present embodiment, the local introduction of cuts combined with a local deformation of the fiber structure in the edge region.
  • the first pre-effective contact surface 62 of the embossing punch 60 comprises a plurality of edges, which form line-shaped contacts to the first contact surface 63 in the embossing position.
  • the annular edge pressure starting from the outer edge of the cotton pad 21, extends radially inwards in the direction of the edge embossing. However, the edge pressure does not extend to the edge embossing in the present case. This is because in an annular portion which is arranged between the edge pressure and the edge embossing, no or a significantly lower pressing force is exerted on the cotton pad 21 due to the recessed contact surface 75.
  • the embossing die 10, 60 is lowered together with the cutting ring 5, 55.
  • the pre-effective contact region 12, 62 of the embossing punch 10, 60 is arranged opposite the cutting edge 7, 57 so that it comes into operative contact with the pre-effective contact region 13, 63 of the embossing can 11, 61 in the die 2, 52 only when the cutting operation in progress or already completed.
  • the edge embossing is thus performed overlapping with the cutting operation or thereafter and before returning the working punch 3, 53 from the die opening 2, 52.
  • the working punch 3, 53 further includes a centric opening in which a plunger 9 is guided. This serves to eject the punched cotton pads 21 through the die opening 4, 54 in an underlying storage space 22.
  • the plunger 9 is extended after completion of the edge embossing before or when returning the work ram 3, 53 in the direction of the cotton pad 21.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP20120405110 2011-10-24 2012-10-01 Dispositif et procédé destinés à fabriquer des tampons de coton hydrophile Withdrawn EP2586578A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01717/11A CH705663A2 (de) 2011-10-24 2011-10-24 Vorrichtung und Verfahren zur Herstellung von Textilteilen.

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EP2586578A1 true EP2586578A1 (fr) 2013-05-01

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EP20120405110 Withdrawn EP2586578A1 (fr) 2011-10-24 2012-10-01 Dispositif et procédé destinés à fabriquer des tampons de coton hydrophile

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US (1) US20130098219A1 (fr)
EP (1) EP2586578A1 (fr)
CH (1) CH705663A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016148564A1 (fr) * 2015-03-13 2016-09-22 Vmi Holland B.V. Dispositif de perforation pour la fabrication de pastilles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112027762B (zh) * 2020-08-27 2024-11-01 康源科技(重庆)有限公司 一种用于无纺布分切后的分料装置
CN113047027B (zh) * 2021-03-31 2023-03-28 东莞威保运动器材有限公司 一种纺织面料裁样器
CN116198825A (zh) * 2023-03-02 2023-06-02 山东中鸿特检生物科技有限公司 一种隔离防相互干扰的检测试剂盒及其生产方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1302072B (de) * 1964-04-25 1969-11-13 Floxite Company Inc Stanzvorrichtung zur Herstellung eines Zahnreinigers
DE1943949A1 (de) * 1969-08-29 1971-03-11 Klaus Kaesler Verfahren und Vorrichtung zum kontinuierlichen Schneiden und Praegen von Blattzuschniten fuer die Herstellung kuenstlicher Blumen
EP0318673A1 (fr) * 1987-11-28 1989-06-07 Helmut Pelzer Coupeuse à couper des pièces de matière à longues fibres

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1302072B (de) * 1964-04-25 1969-11-13 Floxite Company Inc Stanzvorrichtung zur Herstellung eines Zahnreinigers
DE1943949A1 (de) * 1969-08-29 1971-03-11 Klaus Kaesler Verfahren und Vorrichtung zum kontinuierlichen Schneiden und Praegen von Blattzuschniten fuer die Herstellung kuenstlicher Blumen
EP0318673A1 (fr) * 1987-11-28 1989-06-07 Helmut Pelzer Coupeuse à couper des pièces de matière à longues fibres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016148564A1 (fr) * 2015-03-13 2016-09-22 Vmi Holland B.V. Dispositif de perforation pour la fabrication de pastilles
NL2014455B1 (en) * 2015-03-13 2016-10-13 Vmi Holland Bv Punching device for manufacturing pads.

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CH705663A2 (de) 2013-04-30
US20130098219A1 (en) 2013-04-25

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