EP0055332A1 - Châssis pour poinçonneuse - Google Patents

Châssis pour poinçonneuse Download PDF

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Publication number
EP0055332A1
EP0055332A1 EP19810107691 EP81107691A EP0055332A1 EP 0055332 A1 EP0055332 A1 EP 0055332A1 EP 19810107691 EP19810107691 EP 19810107691 EP 81107691 A EP81107691 A EP 81107691A EP 0055332 A1 EP0055332 A1 EP 0055332A1
Authority
EP
European Patent Office
Prior art keywords
base plate
punch
tub
cheeks
dish
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.)
Granted
Application number
EP19810107691
Other languages
German (de)
English (en)
Other versions
EP0055332B1 (fr
Inventor
Theodor Pflugfelder
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.)
Louis Leitz Firma
Original Assignee
Louis Leitz Firma
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 Louis Leitz Firma filed Critical Louis Leitz Firma
Publication of EP0055332A1 publication Critical patent/EP0055332A1/fr
Application granted granted Critical
Publication of EP0055332B1 publication Critical patent/EP0055332B1/fr
Expired legal-status Critical Current

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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
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/36—Punching or perforating pliers
    • 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

Definitions

  • the invention relates to a letter punch lower part of the type specified in the preamble of claim 1.
  • the bending edges of the side cheeks and the lateral bending edges of the pressed-up tub parts are at a greater or lesser distance from one another, forming flat standing surfaces. It has been shown that bending moments occur in this intermediate area in the case of larger perforation loads, which pull and deform the flat parts of the base surface depending on the point of application of the tensile forces occurring on the side of the tub flanks or the side cheeks. These deformations can lead to an undesirable widening of the insertion slot and to changes in position in the area of the punch guides.
  • the invention is therefore based on the object to improve the known letter punch lower part in such a way that deformations in the area of the standing surfaces are avoided even under high tensile stresses.
  • bores 9, 9' are provided which serve as a bearing point for a pressure plate, not shown.
  • the pushed-up tub tapers in the area of the fields 22 and 23, so that the lower edge edges 24, 24 ', which run obliquely outwards in their front area, form acute angles with the dash-dotted bending lines 25, 25'.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Punching Or Piercing (AREA)
EP19810107691 1980-12-27 1981-09-28 Châssis pour poinçonneuse Expired EP0055332B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803049249 DE3049249C2 (de) 1980-12-27 1980-12-27 Brieflocher-Unterteil
DE3049249 1980-12-27

Publications (2)

Publication Number Publication Date
EP0055332A1 true EP0055332A1 (fr) 1982-07-07
EP0055332B1 EP0055332B1 (fr) 1984-01-18

Family

ID=6120428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810107691 Expired EP0055332B1 (fr) 1980-12-27 1981-09-28 Châssis pour poinçonneuse

Country Status (2)

Country Link
EP (1) EP0055332B1 (fr)
DE (1) DE3049249C2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646778A1 (de) * 1976-10-16 1978-04-20 Leitz Fa Louis Brieflocher
DE2646135A1 (de) * 1976-10-13 1978-04-27 Leitz Fa Louis Brieflocher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646135A1 (de) * 1976-10-13 1978-04-27 Leitz Fa Louis Brieflocher
DE2646778A1 (de) * 1976-10-16 1978-04-20 Leitz Fa Louis Brieflocher

Also Published As

Publication number Publication date
DE3049249C2 (de) 1985-05-09
EP0055332B1 (fr) 1984-01-18
DE3049249A1 (de) 1982-07-29

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