US3009377A - Adjustable tool connection for platen presses - Google Patents

Adjustable tool connection for platen presses Download PDF

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Publication number
US3009377A
US3009377A US65050957A US3009377A US 3009377 A US3009377 A US 3009377A US 65050957 A US65050957 A US 65050957A US 3009377 A US3009377 A US 3009377A
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US
United States
Prior art keywords
platen
tool
rod
tool connection
pivot
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 - Lifetime
Application number
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English (en)
Inventor
Laufer Frederic
Trey Rene 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.)
Bobst Mex SA
Original Assignee
Bobst SA
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 Bobst SA filed Critical Bobst SA
Application granted granted Critical
Publication of US3009377A publication Critical patent/US3009377A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/26—Details
    • 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
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9483—Adjustable

Definitions

  • the present invention relates to platen presses, and more particularly to presses of the type used for cutting out or shaping a material in sheet form.
  • the invention contemplates the provision of elements, preferably, incorporated into the associated press, for purposes of gripping the associated tool to cause the same to bear against the platen of a press.
  • FIG. 1 indicates diagrammatically a press arrangement in which provisions of the invention can be embodied
  • FIG. 2 illustrates, on enlarged scale, an embodiment of the invention adapted to be positioned according to line AB in FIG. 1;
  • FIG. 2A illustrates, on enlarged scale, the fastening of the tool to the platen according to lines AC in FIG. 1;
  • FIG. 3 illustrates a control provided by the invention seen in the direction of arrow F in FIG. 1;
  • FIGS. 4 and 5 are operational diagrams.
  • the press comprises a mobile lower platen 1 which is lifted and lowered successively with respect to a fixed upper platen 2 connected with a body structure 3, the sheets to be worked being transported and guided between the platens by endless chains 4 which support gripper bars.
  • the lower tool has not been illustrated.
  • the upper tool 5 is illustrated and is held against the upper platen 2 by its left-hand and right-hand edges with regard to the position illustrated, or else by 1ts front and rear edges or in the vicinity of such edges.
  • the tool 5 will thus tend to sag and; generally, to bear imperfectly against the platen in central region thereof. This defect is found to exist even if grooves and ribs or studs adapted to engage in one another are used.
  • the invention obviates this disadvantage by providing,
  • At least one element which is adapted to be placed under tension in such manner as to exert a tractive force on a jaw which grips the tool so that the tool bears against the said platen.
  • FIG. 2 shows a portion of the upper platen 2, a portion of the body structure 3 of the press, and the central part of the tool 5 with a T-section rib 6. This structure is positioned along line AB of FIG. 1.
  • Rib 6 which is of small length and can be replaced by a stud, is slidable in a corresponding groove 6a in the platen 2, perpendicularly to the plane of the drawing.
  • the tool 5 has been illustrated in a simplified form which emits moulds o-r fillets, the make-ready pieces, and any protective metal sheet which might be used for covering the latter.
  • FIG. 2A illustrates a bolted arrangement whereby the ends of the tools are fastened to platen 2 by bolt 24 and nut 25 along lines AC of FIG. 1
  • a piston 7 which is slidable in a sleeve 8 and which is recessed at 9 so as to comprise a configuration similar to that of the groove.
  • the piston forms a jaw adapted to coincide with the groove and thus receive the rib or stud 6 of the tool 5 with the object of retaining the same.
  • the piston 7 is connected to the upper part of the body structure 3 by a toggle lever whose two lever arms are constituted by two bars 10 and 11, the first being articulated to the piston 7 at pivot 12 and the second to a rod 13; their other ends are mutually articulated at pivot -14.
  • the rod 13 is adapted to move upwards and downwards in a specially shaped sleeve 15 which is held in the body structure 3. This movement takes place in opposition to the action of a compression spring 16 whose tension can be adjusted by means of a bolt 17 which is threaded on rod 13.
  • a vertical movement of the whole arrangement is made possible owing to the fact that the pivot 18 con necting the bar 1 1 to the rod 13 by means of a housing 18a (rigidly connected to bar 11) has some play in the sleeve 15, the said pivot extending through an elongated hole 19 in the said sleeve.
  • FIG. 2 shows rod 20 as seen from the side.
  • FIG. 3 shows, in side view, the bars '10 and 11 and also their pivot -14 and it will be seen that the rod 20 extends to a wall 3' of the body structure 3 of the press, the front side in the view shown in FIG. 1.
  • a handwheel 21 which, through the intermediary of the screw 22, is adapted to exert a pulling force in the direction of the arrow 23 on the toggle lever.
  • this handwheel is only a traction means given by way of example, and that it could be replaced, for example, by an eccentric or any other device adapted to fulfill the same functions.
  • FIG. 4 shows the bars 10 and 11 in alignment between the spring 16 (here a draw spring for the sake of simplifying the drawings) and the jaw 9, which alignment corresponds to the position of rest of FIG. 2.
  • a pulling effect can be exerted in the direction of the arrow 23 (for example, by means of the handwheel 2 1). It will be apparent (see position 3 of FIG. 5) that this will necessarily cause either the lifting of the jaw 9 or the deformation (compression in FIG. 2 or traction in FIG. 5) of the spring 16, so that the tool 5 will be gripped and made to bear against the platen. It is understood that the tool 5 peripherally engages the platen as well.
  • the position of the elastic member can of course vary; for example it could be incorporated in one of the lever arms of the toggle lever system or even in the rod 20.
  • this rod which can extend through the full width of the body structure of the press, could be connected to the pivots of a plurality of toggle lever systems acting, in a sense, in parallel on a plurality of T-section ribs or studs on the tool, which would thus be gripped and made to bear against the platen in two or three places at the same time.
  • the object aimed at by the invention could also be achieved by other means than by toggle lever systems.
  • a press having a body supporting a platen against which is positioned a tool having opposite edges fastened to the platen and having a surface facing the platen;
  • traction means located intermediate said opposite edges and extending through the platen, said traction means comprising a system of pivoted levers, one of said levers being resiliently pivotally attached to said platen and another of said levers being pivotally attached to said tool, a pivot coupling said levers at the free ends thereof and control means attached to said platen and being connected to the coupled lever ends for imparting lateral movement to said ends and thereby effecting endwise movement of said tool with respect to said platen.
  • a device as claimed in claim 1 comprising a lug on the tool for traction with said engagement means.
  • control means comprises a rod supported on the body and coupled to said pivot, the rod comprising a threaded portion, the device further comprising a handwheel engaging the threaded portion for adjusting the rod.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Press Drives And Press Lines (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Handling Of Sheets (AREA)
US65050957 1956-04-16 1957-04-03 Adjustable tool connection for platen presses Expired - Lifetime US3009377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH329745T 1956-04-16

Publications (1)

Publication Number Publication Date
US3009377A true US3009377A (en) 1961-11-21

Family

ID=4537838

Family Applications (1)

Application Number Title Priority Date Filing Date
US65050957 Expired - Lifetime US3009377A (en) 1956-04-16 1957-04-03 Adjustable tool connection for platen presses

Country Status (5)

Country Link
US (1) US3009377A (enrdf_load_stackoverflow)
CH (1) CH329745A (enrdf_load_stackoverflow)
DE (1) DE1048771B (enrdf_load_stackoverflow)
FR (1) FR1170528A (enrdf_load_stackoverflow)
GB (1) GB803456A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5104370A (en) * 1989-10-12 1992-04-14 Bobst Sa Ancillary device for fastening a tool within a platen press
CN108481428A (zh) * 2018-05-16 2018-09-04 镇江市高等专科学校 一种药敏试验用简易打孔器及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1175976B (de) * 1962-01-11 1964-08-13 Bobst & Sohn A G J Vorrichtung zum Befestigen eines Werkzeuges am oberen Tiegel einer Tiegelpresse zum Praegen, Stanzen od. dgl.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US970888A (en) * 1909-09-27 1910-09-20 Patrick J Conboy Adjustable die-holder.
US1306726A (en) * 1919-06-17 smith
US1389286A (en) * 1921-08-30 Means for securing dies in forging apparatus
US1563940A (en) * 1921-03-23 1925-12-01 Economy Engineering Company Bolt machine
US1798526A (en) * 1929-09-28 1931-03-31 Katches Inc Fastening device
US2163229A (en) * 1936-12-04 1939-06-20 Daniel J Williams Method of making die units and component parts thereof
US2574281A (en) * 1945-04-23 1951-11-06 Olson John Push or pull toggle clamp
US2930271A (en) * 1956-10-24 1960-03-29 Sr Lawrence V Whistler Punch and die assembly having tool positioning means

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1306726A (en) * 1919-06-17 smith
US1389286A (en) * 1921-08-30 Means for securing dies in forging apparatus
US970888A (en) * 1909-09-27 1910-09-20 Patrick J Conboy Adjustable die-holder.
US1563940A (en) * 1921-03-23 1925-12-01 Economy Engineering Company Bolt machine
US1798526A (en) * 1929-09-28 1931-03-31 Katches Inc Fastening device
US2163229A (en) * 1936-12-04 1939-06-20 Daniel J Williams Method of making die units and component parts thereof
US2574281A (en) * 1945-04-23 1951-11-06 Olson John Push or pull toggle clamp
US2930271A (en) * 1956-10-24 1960-03-29 Sr Lawrence V Whistler Punch and die assembly having tool positioning means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5104370A (en) * 1989-10-12 1992-04-14 Bobst Sa Ancillary device for fastening a tool within a platen press
CN108481428A (zh) * 2018-05-16 2018-09-04 镇江市高等专科学校 一种药敏试验用简易打孔器及其使用方法

Also Published As

Publication number Publication date
CH329745A (fr) 1958-05-15
GB803456A (en) 1958-10-22
DE1048771B (enrdf_load_stackoverflow) 1900-01-01
FR1170528A (fr) 1959-01-15

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