DE521663C - Method and punch for joining unvulcanized rubber sheets in pairs - Google Patents

Method and punch for joining unvulcanized rubber sheets in pairs

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Publication number
DE521663C
DE521663C DEM105407D DEM0105407D DE521663C DE 521663 C DE521663 C DE 521663C DE M105407 D DEM105407 D DE M105407D DE M0105407 D DEM0105407 D DE M0105407D DE 521663 C DE521663 C DE 521663C
Authority
DE
Germany
Prior art keywords
cutting edge
punch
rubber sheets
edge
pairs
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.)
Expired
Application number
DEM105407D
Other languages
German (de)
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.)
ISTVAN DOROGI DR
LAJOS DOROGI DR
Original Assignee
ISTVAN DOROGI DR
LAJOS DOROGI DR
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.)
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Publication date
Application filed by ISTVAN DOROGI DR, LAJOS DOROGI DR filed Critical ISTVAN DOROGI DR
Application granted granted Critical
Publication of DE521663C publication Critical patent/DE521663C/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B29C66/73752—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2022/00—Hollow articles
    • B29L2022/02—Inflatable articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Verfahren und Stanze zur paarweisen Vereinigung von unvulkanisierten Gummiplatten Das sogenannte Zwickverfahren wird in der Gummiindustrie dazu benutzt, um zwei unvulkanisierte Gummiblätter nach bestimmten Umrißlinien gleichzeitig auszuschneiden und dabei das Blattpaar an der Schnittkante zu verschweißen. Hierzu werden gewöhnlich stumpfe Stanzen verwendet, da diese mit ihrer abgerundeten Schnittkante die durchschnittenen Gummiblätter knapp neben der Trennungslinie allmählich verlaufend zusaminenpressen und eine keilförmig zugeschärfte Naht erzeugen.Method and punch for the pairwise union of unvulcanized Rubber sheets The so-called Zwick process is used in the rubber industry to to cut out two unvulcanized rubber sheets at the same time according to certain outlines and welding the pair of blades at the cutting edge. This is usually done blunt punches are used, as these cut through with their rounded cutting edge Gradually press the rubber sheets together just next to the dividing line and create a wedge-shaped, sharpened seam.

Zur Vermeidung der Mängel der mit stumpfen Stanzen hergestellten Nähte hat man bereits die Verwendung von Stanzen zum paarweisen Ausstanzen und Verschweißen von unvulkanisierten Gummiblättern vorgeschlagen, bei denen neben einer scharfen Schnittkante auch ein Preßteil vorgesehen ist, über deren Druckfläche die Schnittkante vorsteht.To avoid the imperfections of the seams made with butt punches one already has the use of punches for punching out and welding in pairs suggested by unvulcanized rubber sheets, in addition to which a sharp one Cut edge also a pressed part is provided, over the pressure surface of which the cut edge protrudes.

Demgegenüber besteht das Wesen der Erfindung darin, daß die beiden zu vereinigenden Gummiplatten beim Stanzen auf eine gegenüber ihrer ursprünglichen Dicke verringerte Gesamtstärke unter Bildung eines Schweißflansches neben der Schnittkante zusammengepreßt und in diesem Zustand vulkanisiert werden. Der wesentliche Unterschied dein Bekannten gegenüber besteht darin, daß bisher die Stärke der erzeugten Naht der zweifachen Gummiblätterstärke entspricht, so daß von irgendeiner nennenswerten Zusammenpressung nicht gesprochen werden kann, während gemäß der Erfindung die beiden zu vereinigenden Gummiblätter beim Stanzen auf eine gegenüber ihrer ursprünglichen Dicke verringerte Gesamtstärke unter Bildung eines Schweißflansches neben der Schnittkante zusaminengepreßt und in diesem Zustand vulkanisiert werden. Dadurch entstehen dauerhafte, dem Aufblasdruck bei Gummifiguren widerstehenden Nähte. Die Erzielung einer ständig dichten, druckfesten Randnaht ist insbesondere bei aufblasbaren Gummifiguren ein wesentliches Erfordernis, das bei den üblichen Verfahren der Verschweißung nicht verwirklicht wird.In contrast, the essence of the invention is that the two to be united rubber sheets when punching on one opposite their original Thickness Reduced overall thickness with the formation of a welding flange next to the cutting edge pressed together and vulcanized in this state. The main difference your acquaintance opposite consists in the fact that so far the strength of the seam produced corresponds to twice the gum sheet thickness, so that of any noteworthy Compression can not be spoken, while according to the invention the two to be united rubber sheets when punching on one opposite their original Thickness Reduced overall thickness with the formation of a welding flange next to the cutting edge pressed together and vulcanized in this state. This creates permanent, Seams that resist the inflation pressure of rubber figures. Achieving one constantly dense, pressure-resistant edge seam is particularly important for inflatable rubber figures essential requirement that is not the case with conventional welding processes is realized.

Die Erfindung betrifft ferner eine Stanze mit einem Preßteil neben der Schnittkante zur Ausübung des Verfahrens, deren Neuheit darin besteht, daß die Schnittkante um einen Abstand über den Preßteil vorsteht, der kleiner ist als die ursprüngliche Gesamtstärke der beiden zu vereinigenden Gummiplatten.The invention also relates to a punch with a pressing part alongside the cutting edge to carry out the procedure, the novelty of which is that the Cut edge protrudes by a distance over the pressing part which is smaller than that original total thickness of the two rubber sheets to be combined.

Dabei kann man mit ganz geringem Halbmesser abgerundete stumpfe Schneidekanten oder auch scharfe, gegebenenfalls nur einseitig abgeschrägte Schneidekanten benutzen.Here you can get rounded blunt cutting edges with a very small radius or also use sharp cutting edges, if necessary only beveled on one side.

In Abb. i und 2 der Zeichnung ist das zur Ausführung des Verfahrensgeeignete schwach stumpfe Stanzwerkzeug mit dem durchzustanzenden Gummiblattpaär vor dem Stanzen und nach dem Stanzen in vergrößertem Schnitt dargestellt.In Fig. I and 2 of the drawing is the one suitable for carrying out the process weakly blunt punching tool with the pair of rubber blades to be punched through before punching and shown after punching in an enlarged section.

Abb. 3 zeigt dasselbe Werkzeug mit vollständig zugeschärfter Schneidekante in einer der Abb. 2 entsprechenden Darstellung.Fig. 3 shows the same tool with the cutting edge fully sharpened in a representation corresponding to Fig. 2.

Abb. d. zeigt die durch diese Stanzen erzeugte flanschförmige 'NTaht in schaubildlichem Schnitt.Fig. D. shows the flange-shaped 'N seam produced by this punching in a diagrammatic section.

Abb. 5 zeigt die Stanze gemäß Abb. 3 in einer Ausführungsform für das gleichzeitige Durchstanzen von zwei Blattpaaren in vergrößertem Schnitt.Fig. 5 shows the punch according to Fig. 3 in an embodiment for the simultaneous punching through of two pairs of leaves in an enlarged section.

Gemäß Abb. i ist die Stanze e mit einer schwach abgestumpften Schnittkante ä ausgerüstet. An der einen Seite besitzt das Stanzwerkzeug einen Absatz f, der in bezug auf die Schnittkante um die Stufe h zurückspringt; die kleiner ist als die Gesamtstärke d des durchzuschneidenden Blattpaares A, B. Besitzen die beiden Blätter A und B die gleiche Stärke, so beträgt die Höhe h der Stufe zweckmäßig die Hälfte der Gesamtstärke d. Beim Durchschneiden des Blattpaares A, B (Abb. 2) preßt der Absatz f an einer scharf abgegrenzten Breite za die beiden Blätter A, B etwa auf die Hälfte ihrer ursprünglichen Stärke mit einem genügenden Druck zusammen, um an der vollen Breite n des aus Abb. q. ersichtlichen Flansches p das sichere Verschweißen zu erzielen. Infolgedessen werden die Blätter miteinander vereinigt, ohne daß sich an irgendeiner Stelle eine Querschnittschwächung oder ein Verkleben geringeren Haltes ergeben würde. Die Breite ii kann genügend groß sein, damit längs der Schweißstelle befindliche kleine kautschukfremde Körperchen keine undichte Stellen in der Naht erzeugen.According to Fig. I, the punch e is equipped with a slightly blunted cutting edge ä. On one side, the punching tool has a shoulder f which jumps back by the step h with respect to the cutting edge; which is smaller than the total thickness d of the pair of leaves A, B to be cut through. If the two leaves A and B are of the same thickness, the height h of the step is appropriately half the total thickness d. When cutting through the pair of leaves A, B (Fig. 2), the shoulder f compresses the two leaves A, B at a sharply defined width za to about half of their original thickness with sufficient pressure to allow the full width n of the from Fig . q. visible flange p to achieve reliable welding. As a result, the sheets are united with one another without any weakening of the cross-section or a sticking of a poor hold would result. The width ii can be sufficiently large so that small, non-rubber bodies located along the weld point do not create any leaks in the seam.

Dadurch, däß die verschweißende Preßwirküng der Stanze durch die zurückspringende besondere Stufe, also durch einen von der Schneidekante getrennten Teil, erzeugt wird, kann man die Schneide, wie aus Abb.3 ersichtlich, auch mit einer auf das Gummiblattpaar senkrechten, an der einen Seite scharf abgeschrägten Schneide ausführen, wodurch. die Schnittkante der Kautschukblätter sehr scharf ausfällt. Mit der Stanze kann man auch mehrere Blätter gleichzeitig durchschneiden: Wünscht man zwei Blattpaare derart gleichzeitig zu schneiden, daß die Blätter bloß paarweise verschweißt werden, so benutzt man zweckmäßig die aus Abb. 5 ersichtliche zweiseitig ausgeführte Stanze, die auch nach oben eine Schnittkante g' und einen Absatz f' aufweist. Die stabförmige, gerade oder gebogene Stanze c bildet ein loses Werkzeug, das auf (las eine Gummiblattpaar A, B gelegt und mit dem zweiten Gummiblattpaar A', B' bedeckt wird, worauf das Pressen zwischen zwei Platten m und m' erfolgt.Because the welding pressing action of the punch is created by the special step that is set back, i.e. by a part separated from the cutting edge, the cutting edge can also be placed on one side with a perpendicular to the pair of rubber blades, as can be seen in Fig run sharp beveled cutting edge, which. the cut edge of the rubber sheets is very sharp. With the punch you can cut through several sheets at the same time: If you want to cut two pairs of sheets at the same time in such a way that the sheets are only welded in pairs, then you can use the two-sided punch shown in Fig. 5, which also has a cutting edge g 'at the top. and has a paragraph f '. The rod-shaped, straight or curved punch c forms a loose tool which is placed on (read a pair of rubber sheets A, B and covered with the second pair of rubber sheets A ', B' , whereupon the pressing takes place between two plates m and m ' .

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur paarweisen Vereinigung von unvulkanisierten Gummiplatten durch verschweißendes Stanzen unter Anwendung einer Stanze, bei der neben einer scharfen Schnittkante ein Preßteil vorgesehen ist, über dessen Druckfläche die Schnittkante vorsteht, dadurch gekennzeichnet, daß die beiden zu vereinigenden Gummiplatten beim Stanzen auf eine gegenüber ihrer ursprünglichen Dicke verringerte Gesamtstärke unter Bildung eines Schweißflansches neben der Schnittkante zusammengepreßt und in diesem Zustand vulkanisiert werden. PATENT CLAIMS: i. Method for pairwise union of unvulcanized Rubber sheets by welding punching using a punch, in which In addition to a sharp cutting edge, a pressed part is provided over its pressure surface the cut edge protrudes, characterized in that the two to be united Rubber sheets reduced to a thickness compared to their original thickness during punching Total thickness compressed to form a welding flange next to the cutting edge and vulcanized in this state. 2. Stanze mit einem Preßteil neben der Schnittkante zur Ausübung des Verfahrens des Anspruches i, dadurch gekennzeichnet, daß die Schnittkante (g) um einen Abstand (h) über den Preßteil (f) vorsteht, der kleiner als die ursprüngliche Gesamtstärke (d) der beiden zu vereinigenden Gummiplatten (A, B) ist. 2. Punch with a pressed part next to the cutting edge for exercising the method of claim i, characterized in that the cutting edge (g ) protrudes by a distance (h) over the pressing part (f) which is smaller than the original total thickness (d) of the two rubber plates (A, B) to be combined. 3. Stanze zur Ausübung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß ein den auszustanzenden Umrißlinien folgender Stab (c) an zwei gegenüberliegenden Seiten parallel zur Ebene der Schnittkante gerichtete Druckflächen (f, f') hat und an der einen Kante einer jeden Druckfläche je eine über diese vorspringende Schneide (g, g') vorgesehen ist.3. Punch for performing the method according to claim i, characterized in that a rod (c) following the outlines to be punched out has pressure surfaces (f, f ') directed parallel to the plane of the cutting edge on two opposite sides and on one edge of each pressure surface a cutting edge (g, g ') protruding over this is provided.
DEM105407D 1928-05-15 1928-06-30 Method and punch for joining unvulcanized rubber sheets in pairs Expired DE521663C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU521663X 1928-05-15

Publications (1)

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DE521663C true DE521663C (en) 1931-04-01

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DEM105407D Expired DE521663C (en) 1928-05-15 1928-06-30 Method and punch for joining unvulcanized rubber sheets in pairs

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DE (1) DE521663C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748075C (en) * 1939-12-07 1944-10-25 Joseph Beyer Fa Method for joining fabric webs for garments by welding
EP0344987A2 (en) * 1988-05-28 1989-12-06 Fabrex Limited Improvements relating to appliqué articles
WO2003016029A2 (en) * 2001-08-14 2003-02-27 James Walker & Company Limited Elastomeric products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748075C (en) * 1939-12-07 1944-10-25 Joseph Beyer Fa Method for joining fabric webs for garments by welding
EP0344987A2 (en) * 1988-05-28 1989-12-06 Fabrex Limited Improvements relating to appliqué articles
EP0344987A3 (en) * 1988-05-28 1991-03-27 Fabrex Limited Improvements relating to appliqué articles
WO2003016029A2 (en) * 2001-08-14 2003-02-27 James Walker & Company Limited Elastomeric products
WO2003016029A3 (en) * 2001-08-14 2003-04-03 Walker & Co James Ltd Elastomeric products

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