EP0308857A2 - Dispositif de poinçonnage - Google Patents

Dispositif de poinçonnage Download PDF

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Publication number
EP0308857A2
EP0308857A2 EP88115358A EP88115358A EP0308857A2 EP 0308857 A2 EP0308857 A2 EP 0308857A2 EP 88115358 A EP88115358 A EP 88115358A EP 88115358 A EP88115358 A EP 88115358A EP 0308857 A2 EP0308857 A2 EP 0308857A2
Authority
EP
European Patent Office
Prior art keywords
punching device
frame
punching
tools
guide
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.)
Withdrawn
Application number
EP88115358A
Other languages
German (de)
English (en)
Other versions
EP0308857A3 (fr
Inventor
Wilfried Ebmeyer
Günter Mattiebe
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0308857A2 publication Critical patent/EP0308857A2/fr
Publication of EP0308857A3 publication Critical patent/EP0308857A3/fr
Withdrawn legal-status Critical Current

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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
    • B30B1/261—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 by cams
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/16—Cam means
    • 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
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/048—Laminated frame structures
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18304—Axial cam
    • Y10T74/18312—Grooved
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/447—Plural tools successively actuated at same station
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8719—With transmission yieldable on overload
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8843—Cam or eccentric revolving about fixed axis
    • 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
    • Y10T83/95—Machine frame

Definitions

  • the invention relates to a punching device, preferably for punching intermittently moving material webs made of thermoplastic material, consisting of upper and lower tools held in a machine frame, at least one of which is provided with a drive that moves it up and down.
  • Punching devices of this type are known in different embodiments. However, these usually work in a scissor-cut manner, that is to say in such a way that the interacting cutting edges of the upper and lower tools do not meet one another during the punching cut, but rather run past one another at a distance. The die cut is thus carried out in the "soft".
  • An object of the invention is to provide a punching device of the type specified at the beginning, with which clean punch cuts can be carried out.
  • this object is achieved in a punching device of the generic type in that the tools that perform the punching cut are best of a knife plate or a knife ring and an abutment plate or an abutment ring hen that touch or almost touch each other at the end of the die cut.
  • the punching device according to the invention with "hard” to “hard” working punching tools is particularly advantageous and expedient when material webs made of thermoplastic material, for example for the production of bags or sacks, are to be punched.
  • a carrier piece of the movable tool part is provided with a guide for a moving intermediate piece and that the intermediate piece is held in contact with a stop by a hard elastic and / or hard plastic cushion, which is seen in the drive direction at the rear End of the tour.
  • This pad not only ensures the required flexibility in a die cut “hard” to "hard”, but it also has a shock-absorbing effect, so that the vibration stress on the device is reduced.
  • a further object of the invention is therefore to provide a mounting and mounting of two or more punching devices in a machine frame in such a way that they do not interfere with one another as a result of shock loads caused by them. So it should be a shock and vibration for several independently working punching devices reducing or damping storage can be created.
  • two punching devices are provided in the machine frame, the associated upper and lower tools of which are each attached to two separate and parallel frame plates or to support bars of these frame plates, of which the plates belonging to the same upper and lower tools are connected to one another by upper cross members, and that all frame plates are firmly connected to one another at their lower ends.
  • the tools of a punching device are each supported or supported on frame plates or frame spars of frame plates, which form independent partial frames, which are each connected to one another at their upper ends by supports and which are only connected together at their lower ends.
  • This layered construction of the frame from frame plates forming subframes surprisingly achieves a considerable reduction in shock and vibration stresses. This may be due to the fact that the vibrations in the lower joint attachment cancel each other out or for other reasons that still have to be clarified.
  • the frame plates of a frame group can touch one another or can be at a distance from one another.
  • an outer and the opposite inner form the support plates for associated upper and lower tools. Due to this staggering, the distance between the respective frame plates carrying a punching device is always the same.
  • two or more mutually parallel groups of frame plates are provided in three or more punching devices, one of which is outer a group with the inner of the other group and then the following form the subframe for holding a punching device.
  • the associated frame plates or frame spars expediently have raised sections on their upper and lower sides in such a way that they follow one another in the longitudinal direction, the upper and lower tools being guided in a longitudinally displaceable and lockable manner on the elevated sections.
  • Each frame part expediently has two mutually parallel bars for holding and guiding upper and lower tools that belong together.
  • the upper and lower tools can be held in slides which can be moved and locked on the frame plates or their bars.
  • the upper carriages can have laterally projecting legs which are supported on the sliding surfaces formed by the raised sections via sliding pieces and / or rollers.
  • the lower carriages can only be supported on the rails formed by the raised sections via upper legs with rollers or sliders, the carriage being pressed against the rails by a single-arm, cantilevered resilient arm, and an adjusting spindle being provided for the longitudinal adjustment of the lower carriage.
  • the resilient support arm can be attached to a lower cross member that connects the groups of left and right frame parts or plates. The spindle can also be used to fine-tune the punching tools during operation if the punching cut is inaccurate.
  • the movable punching tool is usually moved up and down by a pneumatic piston-cylinder unit. This allows but it is fundamentally not possible to create a desired movement characteristic. Another object of the invention is therefore to provide a punch drive which gives the moving punch a desired movement.
  • this object is achieved in that the guide piece, which preferably carries the upper tool part, is guided axially displaceably but non-rotatably in a slide bush of a holder and is provided with a circumferential groove, the flanks of which form guide tracks for slide cams or rollers which have axles around the axis of the guide piece rotatably but axially immovably mounted in the frame and at least partially enclosing the guide piece printhead, which is provided with a continuously moving it back and forth, and that the guideways are shaped such that the printhead guides the guide piece through its Rotation or swivel movement gives the desired up and down movement.
  • the guide piece is driven with a movement characteristic that is optimally adapted to the cut.
  • the print head is expediently rotatably mounted on a pin fastened to a yoke-like support of the frame or of the slide, which pin is provided with a central bore in which an upper pin-like extension of the guide piece is guided in an axially displaceable manner.
  • the axes of the printhead are offset by 90 degrees to each other, that cam rollers are mounted on opposite axes in each case coaxially, two of which run only on the lower path and two only on the upper path of the guide groove, and that the bottom flank is offset by 90 degrees to each other mutually opposite elevations and the upper flank opposite complementary recesses are provided.
  • the desired drive movement can be given to the guide piece. This is preferably designed such that greater acceleration occurs at the beginning of the movement and only movement at a lower speed towards the end, so that the punching tools meet at a decelerated speed.
  • the rollers are each supported on the lower and upper flanks of the circumferential groove in such a way that they hold and guide the guide piece in the axial direction essentially without play.
  • the guide piece is provided over its circumference with axially extending wedges which are guided in corresponding grooves in the guide bush of the slide.
  • the punching device according to the invention is equally suitable for double presses that differ from double punching devices only in that instead of interacting punching tools, cooperating pressing tools are provided, which can also consist of dies and patrices. Protection is therefore also claimed for double presses of the same design, in which the punching tools are replaced by pressing tools.
  • double press the device described is referred to as a double press, whether punch cuts are made with it.
  • double press was chosen because the dies 29 and dies 50 could be both punching and pressing tools.
  • the upper part 1 belonging to the lower part 2 consists of a frame 13 which is clamped to the upper region of the two frames 3 and 5 by means of the projecting arms 15 of the holder 14 or by means of clamping pieces 16 connected to the frame 13.
  • the upper part 1 can therefore be slid onto the corresponding spars of the frame.
  • the other identically designed upper part 1 ' is clamped in an analogous manner in the upper region of the two frames 4 and 6 with these, namely via the projecting arms 15' and the two clamping pieces 16 '.
  • the holder 14 receives a guide piece 17 which is slidably guided therein by means of a feather key 18.
  • An intermediate piece 19, which carries a lower projecting projection 20, is screwed into the guide piece 17 from below.
  • This protruding Ansatu 20 lies behind a cover 21 which closes the cylindrical space 22 of a carrier piece 23.
  • a hard rubber buffer 24 rests on the bottom of the cylindrical space 22 and is supported on the extension 20 with its end facing away from the bottom of the cylindrical space.
  • Pins 25 are firmly connected to the support piece 23 and penetrate the upper leg 26 of a tool holder, generally designated 27, with little play.
  • the actual pressure plate 28 with the male part 29 is located at the lower end of the pin 25.
  • the guide piece 17 is firmly connected to a cover 30, which has an inner cam track 31. At a distance from the cover 30, a further cover 32 is provided, which also has an inner cam track 33. Both covers 30 and 32 are firmly connected to one another via the rotating part 34.
  • the control part formed from the two covers 30 and 31 and the rotating part 34 is provided with an upwardly projecting pin 35 which is mounted in the bore 36 of a holding pin 37 screwed tightly in the frame 13.
  • a print head 38 is rotatably mounted, with which a toothed segment 39 is screwed.
  • This toothed segment 39 engages in a pinion 40 of a geared motor 41, so that the print head 38 can be rotated via it.
  • the printhead 38 has a lower recess 42 which surrounds the control part consisting of the covers 30 and 32 and the rotating part 34.
  • four rollers 44, 45, 46 and 47 are rotatably supported, of which the rollers 44 and 45 are arranged opposite one another in one plane and the rollers 46 and 47 opposite one another in a somewhat higher plane. This becomes clear when looking at FIG.
  • the exact setting is made by screwing the intermediate piece 19 more or less deeply into the guide piece 17.
  • the position once set is ensured by the clamping ring 51. 1 and 2 it can be seen that the upper tool 52 is mounted by means of the pin 25 in the upper leg 26 of the tool holder 27 and the die 50 in the lower leg 53 of the tool holder 27.
  • This tool holder 27 can be moved laterally out of the press in the direction of arrow A, so that another tool holder with a different tool set can be used in a simple manner.
  • the press of Fig. 3 is constructed identically to the press described above and shown in Fig. 2, so that it is not necessary to go into this embodiment. It should only be mentioned that the inner cam tracks 31 and 33 corresponding cam tracks 31 'and 33' are shown rotated so that the punch is in the "closed position", while the punch according to Fig. 2 is in the "open position” .
  • FIGS. 2 and 3 A comparison of FIGS. 2 and 3 shows that, on the one hand, the lower part 2 and the upper part 1 are supported on the frame 3 and 4, while the lower part 2 'and the upper part 1' are shown in FIG. 3 on the frame 4 and 6 support.
  • This separate support is necessary because in a so-called "hard-on-hard press" it is necessary to work with a very precise setting and the two presses must not interfere with one another, which would be the case, for example, if both presses were on a common one Frames would be stored. Any springing-up occurring in the area of one press would inevitably have an impact on the other press in the form of a slight change in position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP19880115358 1987-09-25 1988-09-19 Dispositif de poinçonnage Withdrawn EP0308857A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3732421 1987-09-25
DE3732421 1987-09-25

Publications (2)

Publication Number Publication Date
EP0308857A2 true EP0308857A2 (fr) 1989-03-29
EP0308857A3 EP0308857A3 (fr) 1991-04-10

Family

ID=6336920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880115358 Withdrawn EP0308857A3 (fr) 1987-09-25 1988-09-19 Dispositif de poinçonnage

Country Status (4)

Country Link
US (1) US4936178A (fr)
EP (1) EP0308857A3 (fr)
JP (1) JPH01164598A (fr)
DK (1) DK530088A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444418A3 (en) * 1990-02-23 1992-07-15 Cincinnati Milacron Inc. Apparatus and method for producing shaped composite pieces and a cutter for cutting sheet material
IT201700049139A1 (it) * 2017-05-05 2018-11-05 C M S Di Mancini Walter & C Snc Pressa per la produzione di pasticche
CN109015895A (zh) * 2018-09-05 2018-12-18 潘声君 一种自动裁床的自动冲压系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062331A (en) * 1989-08-07 1991-11-05 Eastman Kodak Company Apparatus and method for edge notching a continuously moving web
US6526800B1 (en) 1998-04-08 2003-03-04 Lillbacka Jetair Oy Sheet fabrication center and methods therefor of optimally fabricating worksheets
DE202009001625U1 (de) * 2009-02-09 2009-07-16 Rennsteig Werkzeuge Gmbh Vereinzelungsvorrichtung zum Abscheren von an einem Vorratsband aufgereihten Werkstücken
CN108582257B (zh) * 2018-06-13 2020-10-20 深圳市鑫赛自动化设备有限公司 一种冲切模具

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1134047A (en) * 1914-04-28 1915-03-30 Roy W Hunter Cam-movement for jig-polishers.
US1224471A (en) * 1916-01-31 1917-05-01 Universal Hammer Company Hammer.
US1763500A (en) * 1927-10-31 1930-06-10 Bowen Charles Anthony Saw
US1978051A (en) * 1934-02-15 1934-10-23 Hood Rubber Co Inc Apparatus for cutting sheet material
US3111053A (en) * 1958-03-25 1963-11-19 Erik M Lorentzon Laterally and angularly adjustable coupling for tool reciprocating mechanism
US3072003A (en) * 1960-03-11 1963-01-08 Sirugue & Cie Ets Punching machine with photoelectric means to stop work carriage and actuate punch
US3174377A (en) * 1962-11-19 1965-03-23 Moenus Maschf Hydraulic die cutting press with means for simultaneous adjustment of cutting heightand stroke
US3386324A (en) * 1966-08-23 1968-06-04 Lockheed Aircraft Corp Mounting adapter for the ram of power presses
US3760676A (en) * 1972-05-05 1973-09-25 Amada Ltd Us Unitized ram drive for a punch press
GB2176740B (en) * 1985-06-14 1988-11-16 Sankyo Mfg Press machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444418A3 (en) * 1990-02-23 1992-07-15 Cincinnati Milacron Inc. Apparatus and method for producing shaped composite pieces and a cutter for cutting sheet material
IT201700049139A1 (it) * 2017-05-05 2018-11-05 C M S Di Mancini Walter & C Snc Pressa per la produzione di pasticche
CN109015895A (zh) * 2018-09-05 2018-12-18 潘声君 一种自动裁床的自动冲压系统

Also Published As

Publication number Publication date
US4936178A (en) 1990-06-26
EP0308857A3 (fr) 1991-04-10
DK530088A (da) 1989-03-26
DK530088D0 (da) 1988-09-23
JPH01164598A (ja) 1989-06-28

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