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DE570979C - Process for the production of narrow dumbbell-shaped holes in rubber sheets - Google Patents

Process for the production of narrow dumbbell-shaped holes in rubber sheets

Info

Publication number
DE570979C
DE570979C DEA62500D DEA0062500D DE570979C DE 570979 C DE570979 C DE 570979C DE A62500 D DEA62500 D DE A62500D DE A0062500 D DEA0062500 D DE A0062500D DE 570979 C DE570979 C DE 570979C
Authority
DE
Germany
Prior art keywords
rubber sheets
production
shaped holes
dumbbell
rubber
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
DEA62500D
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.)
CHEMISCHER WERTE AG
Original Assignee
CHEMISCHER WERTE AG
Publication date
Priority to DEA62500D priority Critical patent/DE570979C/en
Application granted granted Critical
Publication of DE570979C publication Critical patent/DE570979C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B26F1/0084—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating rubber

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Verfahren zur Herstellung enger hantelförniiger Löcher in Gummiplatten Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung enger, hantelförmiger Löcher in Gummiplatten durch Ausstanzen. Es ist bekannt, Löcher in Gummiplatten durch Stanzen herzustellen. Bei den bekannten Verfahren handelt es sich aber um das Ausstanzen von Löchern gleichbleibenden oder, doppelkonischen Querschnitts in verhältnismäßig dicken Gummiplatten durch zylindrische oder sich konisch verjüngende Stanzen. Demgegenüber betrifft die Erfindung die Herstellung von engen Löchern mit hantelförmigem - Profil in verhältnismäßig dünnen Gummiplatten durch zylindrische Stanzen gleichförmigen Querschnitts.Process for making narrow dumbbell-shaped holes in rubber sheets The present invention is a process for the production of narrow, dumbbell-shaped Holes in rubber sheets by punching out. It is known to have holes in rubber sheets manufacture by punching. The known methods are, however punching holes of constant or double-conical cross-section in relatively thick rubber sheets by cylindrical or conically tapering Punching. In contrast, the invention relates to the production of narrow holes with dumbbell-shaped profile in relatively thin rubber sheets through cylindrical ones Stamping uniform cross-section.

Die Erfindung besteht darin, daß die vulkanisierte Platte beiderseitig mit einem Blatt aus nicht elastischem Material, wie z. B. Papier o. dgl., bedeckt und dann durch eine zylindrische Lochstanze von gleichförmigem Querschnitt Gummi aus der Platte herausgestanzt wird. Bei diesem Verfahren schneidet die Stanze nahe der Plattenoberfläche ein Loch, das etwa ihrem Außendurchmesser entspricht;, im Innern der Platte wird aber der Gummi durch den Druck der. Stanze gedehnt, so daß hier der bleibende Durchmesser des Loches beträchtlich kleiner wird als der Stanzendurchmesser: Infolgedessen haben die Stanzlöcher im Längsschnitt etwa Hantelform und die ausgestanzten- Gummistücke die Form doppelköpfiger Stifte bzw. Hanteln. Der Durchmesser des engen Mittelteils beträgt etwa nur ein Drittel bis ein Viertel des Außendurchmessers der Stanze bei einer Plattenstärke von 1,5 bis a,5 mm. Man kann also auf diese Weise Gummiplatten durch richtiges Ausstanzen von Gummi mit verhältnismäßig dicken Stanzen perforieren, ohne doch Löcher von größerem Durchmesser zu erhalten.The invention consists in that the vulcanized plate on both sides with a sheet of non-elastic material, such as. B. paper o. The like. Covered and then through a cylindrical punch of uniform cross-section rubber is punched out of the plate. In this process, the punch cuts close the plate surface a hole that corresponds approximately to its outer diameter ;, im Inside the plate, however, the rubber is pushed by the pressure of the. Punch stretched so that here the remaining diameter of the hole becomes considerably smaller than the punch diameter: As a result, the punched holes have roughly the shape of a dumbbell in the longitudinal section and the punched-out Pieces of rubber in the form of double-headed pins or dumbbells. The diameter of the tight The middle part is only about a third to a quarter of the outer diameter of the Punch with a plate thickness of 1.5 to 0.5 mm. So you can this way Rubber sheets by properly punching out rubber with relatively thick punches perforate without getting holes of larger diameter.

In der Zeichnung ist ein nach dem Verfahren gemäß der Erfindung gelochtes Gummistück im Querschnitt dargestellt. i ist das Gummiblatt; die Löcher weisen einen engen Mittelteil z und weitere Außenteile 3 auf.In the drawing is a perforated according to the method according to the invention Rubber piece shown in cross section. i is the rubber sheet; the holes point one narrow middle part z and other outer parts 3.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung enger, hantelförmiger Löcher in Gummiplatten durch Ausstanzen, dadurch gekennzeichnet, daß die vulkanisierte Platte beiderseitig mit einem Blatt aus nicht elastischem Material, wie z. B. Papier o. dgl., bedeckt und dann durch eine zylindrische Lochstanze von gleichförmigem Querschnitt Gummi aus der Platte herausgestanzt wird. Claim: A method for producing narrow, dumbbell-shaped holes in rubber sheets by punching out, characterized in that the vulcanized sheet on both sides with a sheet of non-elastic material, such as. B. paper o. The like. Covered and then punched out of the plate by a cylindrical hole punch of uniform cross-section rubber.
DEA62500D Process for the production of narrow dumbbell-shaped holes in rubber sheets Expired DE570979C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA62500D DE570979C (en) Process for the production of narrow dumbbell-shaped holes in rubber sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA62500D DE570979C (en) Process for the production of narrow dumbbell-shaped holes in rubber sheets

Publications (1)

Publication Number Publication Date
DE570979C true DE570979C (en) 1933-02-23

Family

ID=6942923

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA62500D Expired DE570979C (en) Process for the production of narrow dumbbell-shaped holes in rubber sheets

Country Status (1)

Country Link
DE (1) DE570979C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237299B (en) * 1964-02-22 1967-03-23 Ruhrkunststoff G M B H Process for the production of a perforated covering for perforated screens and use of a punching tool to carry out the process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237299B (en) * 1964-02-22 1967-03-23 Ruhrkunststoff G M B H Process for the production of a perforated covering for perforated screens and use of a punching tool to carry out the process

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