GB757533A - Improvements in eccentric presses, preferably, working as stamping or punching machines - Google Patents

Improvements in eccentric presses, preferably, working as stamping or punching machines

Info

Publication number
GB757533A
GB757533A GB2402/54A GB240254A GB757533A GB 757533 A GB757533 A GB 757533A GB 2402/54 A GB2402/54 A GB 2402/54A GB 240254 A GB240254 A GB 240254A GB 757533 A GB757533 A GB 757533A
Authority
GB
United Kingdom
Prior art keywords
ram
arm
crank
rollers
stamping
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
GB2402/54A
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.)
Essa Maschinenfabrik A G
Original Assignee
Essa Maschinenfabrik A G
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 Essa Maschinenfabrik A G filed Critical Essa Maschinenfabrik A G
Publication of GB757533A publication Critical patent/GB757533A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating

Abstract

757,533. Punching; stamping. ESSA MASCHINENFABRIK AKT.-GES. VORM. PRESSENFABRIK AKT.-GES. S. ALLEMAND [FRUHER PRESSENFABRIK S. ALLEMAND]. Jan. 26, 1954. [Jan. 26, 1953; Sept. 7, 1953], No. 2402/54. Class 83 (4). In a punching or a stamping machine in which a connecting-rod driven by a crank or an eccentric moves the tool carrying ram upwardly for the working stroke, the feeding mechanism is mounted on and moves with the ram. The feeding mechanism consists of two pairs of rollers whose grip on the metal strip being worked upon is released at the moment of punching or stamping. The driving shaft 7 carries a connecting-rod 9 having a ball end 10 engaging the ram 11 and a crank-pin 16 which through a linkage reciprocates an arm 27 pivoted on the ram 11. The arm 27 drives two pairs of rollers such as 34, 35 through a ratchet device and the driven roller 34 of each pair is subjected to a friction brake 39 constantly applied. The idling roller 35 of each pair is normally spring-urged to grip the strip but may be released manually by a lever 48 or automatically by a fixed cam 46 when the strip is punched or stamped. The pairs of rollers 34, 35 are mounted on blocks 11a adjustably secured on each side of the ram 11. In order to prevent buckling of the strip due to stretching when punched or stamped, the feed stroke of the pushing pair of rollers is made less than that of the pulling pair (not shown) by adjusting the effective length of the ratchet driving arm corresponding to arm 32. The length of the stroke of the arm 27 is alterable by varying the effective lengths of certain of the links and the radius of the crank-pin 16. The timing of the feed stroke is adjustable by angularly altering the position of the crank-pin 16.
GB2402/54A 1953-01-26 1954-01-26 Improvements in eccentric presses, preferably, working as stamping or punching machines Expired GB757533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE757533X 1953-01-26

Publications (1)

Publication Number Publication Date
GB757533A true GB757533A (en) 1956-09-19

Family

ID=6660048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2402/54A Expired GB757533A (en) 1953-01-26 1954-01-26 Improvements in eccentric presses, preferably, working as stamping or punching machines

Country Status (2)

Country Link
BE (1) BE525540A (en)
GB (1) GB757533A (en)

Also Published As

Publication number Publication date
BE525540A (en)

Similar Documents

Publication Publication Date Title
US2514261A (en) Rotary intermittent feed mechanism
US2292851A (en) Strip feeding apparatus
GB657192A (en) Improvements in or relating to metal working presses
US1421354A (en) Stock-handling mechanism
US2222168A (en) Sheet material feeding mechanism
GB757533A (en) Improvements in eccentric presses, preferably, working as stamping or punching machines
US2598451A (en) Metal strip or sheet feeding means
GB1311155A (en) Apparatus for feeding material to a working machine
US1664717A (en) Wire feeding and cutting machine
US2614515A (en) Hood forming machine
GB667569A (en) Coil stock holding and feeding device
GB737771A (en) A machine for operating on strip stock and a reciprocating slide feed therefor
GB887107A (en) Automatic machine for stamping and forming sheet-metal parts from strip material fed thereto
GB723843A (en) Improvements in or relating to punching machines
GB613223A (en) Improvements in or relating to machines for breaking razor-blade strip
GB1029139A (en) Improvements in or relating to eccentrically actuated presses with strip feeding means
GB1150750A (en) Drive for a Feed Device
GB964522A (en) Improvements in or relating to headers
GB200621A (en) Improvements in perforating mechaniam for use with rotary printing machines
GB767496A (en) Stock feed mechanism for a stock working machine, such as a nail making machine
GB1091982A (en) Improvements in or relating to machines for stamping blanks from strip material
GB564877A (en) Improvements relating to feed mechanisms for punching presses
GB1113035A (en) Apparatus for punching blanks from strip material
SU127230A1 (en) Press machine
GB655929A (en) Improvements relating to shearing, punching, and stamping presses