EP1052038A2 - Stanzmaschine für Rolladenprofile - Google Patents

Stanzmaschine für Rolladenprofile Download PDF

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Publication number
EP1052038A2
EP1052038A2 EP00109868A EP00109868A EP1052038A2 EP 1052038 A2 EP1052038 A2 EP 1052038A2 EP 00109868 A EP00109868 A EP 00109868A EP 00109868 A EP00109868 A EP 00109868A EP 1052038 A2 EP1052038 A2 EP 1052038A2
Authority
EP
European Patent Office
Prior art keywords
punching
section bars
machine according
indexer
moving
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Withdrawn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
EP00109868A
Other languages
English (en)
French (fr)
Other versions
EP1052038A3 (de
Inventor
Daniele Mantovani
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.)
Tecno System Srl
Original Assignee
Tecno System Srl
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 Tecno System Srl filed Critical Tecno System Srl
Publication of EP1052038A2 publication Critical patent/EP1052038A2/de
Publication of EP1052038A3 publication Critical patent/EP1052038A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/22—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member and work feed mechanically connected
    • 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
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/243—Perforating, i.e. punching holes in profiles
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool

Definitions

  • the present invention relates to machines for punching metallic and non-metallic section bars, in particular refers to a punching machine of aluminum section bar for roller shutter.
  • Electromechanical punching machines which carry out the slots in the section bars continuously moving, without stopping the section bars to operate the punching.
  • these machines have a section bar feeding maximum speed limit of 33-34 meters per minute, because in each punching cycle the punches must at first to follow the moving section bars, then to punch these latter keeping the same feeding speed of the section bars and finally to lift the punches from the section bars, always keeping the punches in accordance with the motion of the section bars.
  • a further drawback is that the punches wear out easily due to their continuous movement during the punching phase and in other words, when the punches carry out and leave the slots in the continuous moving of the section bars.
  • the brushless electric motors and the hydraulic cylinders cause a relevant increase of the production costs of these punching machines in comparison with the electromechanical machines and even more, generally they consume very much energy.
  • Object of the present invention is to propose a punching machine avoiding nearly all the drawbacks of the known machines.
  • the main object is to propose a punching machine for reducing the punches wear out and meanwhile for increasing the feeding and punching speeds of the section bars.
  • Further object is to propose a machine automatically setting the punching pitch, keeping it constant despite the wear out of feeding means for the section bar.
  • a further object is to propose a machine of simple realization, of low cost and of high reliability.
  • numeral 1 indicates a punching machine of section bar for roller shutters, according to the preferred embodiment, that essentially comprises a supporting frame 9, moving means 10, punching means 20, feeding means 30, indexer means 40, driving means 50, stop means 15 and fast forward moving means 60.
  • This machine 1 is supported by the frame 9 having adjustable feet 8 and to which is connected an adjustable table 7 fit for supporting the section bars to move through the machine along its operating axis and having an adjustable guide 7a, which keeps theses section bars aligned.
  • the moving means 10 comprise an electric motor 2 connected by means of belts 4 to a flywheel 3 keyed to a main shaft 11 which is rotationally supported by the frame 9 by means of a bearing central body 19 positioned in between.
  • the punching means 20 comprise a plurality of punches 21, in number of five in the embodiment in figure 4, which are aligned along the motion direction of the section bars and are supported by means of a vertically moving carriage 22 on which a eccentric 23 acts keyed on the main shaft 11 of the moving means 10.
  • Said carriage 22, at its upper part, is provided with a tilted surface 24 for contacting the eccentric 23 and is elastically supported by a pair of studs 25 on which are inserted elastic return means 26, in other words, each stud 25 is a guide for a spring 26.
  • the feeding means 30 comprise two double pairs of rubber wheels 31 respectively positioned downstream and upstream of the punching means 20.
  • the upper pair of rubber wheels 31a is keyed on respective shafts 32 connected to the driving means 50 by a chain 33 which engaged related pinions 34, while the lower double pair of rubber wheels 31b is freely supported by respective shafts 35.
  • Two first shafts 32 are connected to the driving means 50 by means of the chain 33 while one of the remaining two shafts 32 is connected to one of these first shafts 32 by a timing belt 36 fit to engage related pulleys 37 keyed to the two connected shafts 32.
  • the remaining two shafts 32 are mutually connected by a timing belt 38.
  • the indexer means 40 include an indexer 41 on whose input shaft 42 is keyed a pulley 43 connected to a correspondent pulley 45 keyed on the main shaft 11 by a timing belt 44.
  • a pulley 47 On the output shaft 46 of the indexer 41 is keyed a pulley 47 connected by means of a timing belt 48 to a correspondent pulley 49 keyed on the input shaft 6 of a variator 5 sequentially connected to the indexer 41 and whose output shaft is connected to the driving means 50 by a timing belt 53 which engages a pulley 59 keyed on the output shaft of the variator 5.
  • the driving means 50 comprise a shaft 51 that is rotationally supported by the frame 9 under the adjustable table 7 by interposing a pair of bearings 58.
  • the shaft 51 supports a pair of unidirectional rotating "free" wheels, first 55a and second 55b and on which are also keyed a first pulley 52 for connecting the indexer means 40, by means of the timing belt 53, a second pulley 54 for connecting the fast forward moving means 60, by means of a timing belt 56, one of the pinions 34 on which is engaged the chain 33 for connecting the feeding means 30 of the section bars.
  • the fast forward moving means 60 comprise a speed motovariator 61 whose output shaft is connected to the driving means 50 by means of a timing belt 56 and by pulleys respectively indicated by the numerals 57 and 62.
  • the stop means 15 comprise a flat belt 16 whose middle portion is fit to slide on the flywheel 3 and whose ends are fixed to the stem of a cylinder 17, vertically mobile between two extreme conditions, one is the free condition and another is the stop condition, in which, respectively, the flat belt 16 slides almost without friction on the flywheel 3 and the belt 16 stops by friction the flywheel 3, stopping it.
  • the operation of said device provides firstly the setting of the variator 5 and of the speed motovariator 61 to regulate respectively the pitch length between the various series of slots, in the preferred embodiment the number of the slots is five, because five is the number of the punches 21, and then the output speed of the section bars already punched by the machine 1.
  • the operation of the electric motor 2 allows the rotation of the main shaft 11, and therefore the rotation of the eccentric 23 that cyclically lowers the carriage 22 supporting the punches 21 toward the adjustable table 7.
  • the punches movement and therefore the consequent realization of a series of slots in the section bar is in phase relationship with the stop and the activation of section bar motion and therefore with the stop or the rotation of the rubber wheels 31a of the feeding means 30.
  • the rotation of the main shaft 11 causes, in sequence, the rotation of the eccentric 23, the disengaging of the punches 21 from the section bar slots, by means of the spring 26, the restart of the rotation of the output shaft of the indexer 41 and the consequent rotation of both the shaft 51 of the driving means 50, by means of the engaging of the first free wheel 55a, and the rubber wheels 31a, so effecting the forward moving of the section bar of a determined pitch length between a series of slots and the following one.
  • the moving means 10 are stopped during a predetermined time interval by means of the activation of the stop means 15, in correspondence of a not punching condition and therefore of not interference of the punches with the section bar.
  • the cylinder 17 provides to pull under tension the flat belt 16 that, because of friction, stops the flywheel 3 allowing it only 60 degrees of free rotation before the complete stop and therefore the speed motovariator 61 which provides to activate the rubber wheels 31 a by means of the rotation of the shaft 51 of the driving means 50 by virtue of the kinematic coupling with the second free wheel 55b and because the shaft 51 can freely rotate by means of the first free wheel 55a.
  • the activation of the rubber wheels 31a allows therefore the fast moving of the section bar without being punched by the punching means 20. It is important to highlight that the section bars move forward in the machine 1 during the punching at a speed ranging between 60 and 80 meters per minute: the preferable speed is 70 meters per minute, in correspondence of their punching condition.
  • section bars are moved or stopped for allowing their punching for a length proportional to the rotation of the main shaft 11 respectively varying from 230 to 250 degrees and from 110 to 130 degrees, and the preferable rotation is 240 degrees in correspondence of the forward moving of the section bar and 120 degrees in correspondence of the punching
  • the stop means 15 stop the rotation of the flywheel 3 in a range from 50 to the 70 degrees of the flywheel 3, and the preferable rotation is 60 degrees, as mention above.
  • the machine 1 has essentially the same means of the machine according to the preferred embodiment except the fast forward moving means 60, the two pairs of unidirectional moving free wheels, first 55a and second 55b of the driving means 50, while shifting means 70 are provided between the moving means 10 and the punching means 20.
  • the shifting means 70 include a stop 71 assembled on a slide 72 horizontally sliding on the carriage 22, this latter without the tilted surface 24, by virtue of guides 74 and actuator means 73, for instance a pneumatic or hydraulic cylinder, whose body 73a is fixed to the carriage 22 and whose stem 73b is fixed to the slide 72.
  • actuator means 73 for instance a pneumatic or hydraulic cylinder
  • Said actuator 73 moves alternatively the slide 72 between two extreme conditions, the first illustrated in the figures 7A and 8A in which on the stop 71 it acts sliding on the eccentric 23 in correspondence of the punching operation of the section bar, when the punches must be lowered to punch the section bar and a second condition, illustrated in the figures 7B and 8B, in which the stem 73a it is pull back without any interference between the eccentric 23 and the stop 71 in correspondence of the not punching condition of the section bar, when the section bar moves forward.
  • the driving means 50 include the shaft 51, rotationally supported by the frame 9 and having a pulley 52 fit for connecting the indexer means 40, by means of the timing belt 53 and the pulley 59.
  • a variant of the machine 1 does not provide the use of the stop means 15 because the flywheel 3 that drives the eccentric 23 can rotate continuously also in correspondence of the forward movement of the section bar or in correspondence of the not punching of the same because the shifting means 70 determine the interaction between the eccentric 23 and the punching means 20 and therefore the punching condition of the section bars.
  • the main advantage of the present invention is to provide a punching machine to increase the feeding and punching speed of the section bars and also to reduce the wear out of the punches.
  • Another advantage is to provide a machine fit to automatically regulate the punching pitch length, keeping it constant, despite of the wear out of the moving means of the section bar.

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)
  • Metal Rolling (AREA)
EP00109868A 1999-05-11 2000-05-10 Stanzmaschine für Rolladenprofile Withdrawn EP1052038A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999BO000247A IT1309246B1 (it) 1999-05-11 1999-05-11 Apparecchiatura asolatrice di profili per tapparelle
ITBO990247 1999-05-11

Publications (2)

Publication Number Publication Date
EP1052038A2 true EP1052038A2 (de) 2000-11-15
EP1052038A3 EP1052038A3 (de) 2002-07-17

Family

ID=11343976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109868A Withdrawn EP1052038A3 (de) 1999-05-11 2000-05-10 Stanzmaschine für Rolladenprofile

Country Status (2)

Country Link
EP (1) EP1052038A3 (de)
IT (1) IT1309246B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429016C (zh) * 2006-11-30 2008-10-29 张家港联亿电子有限公司 一种自动送料装置
CN102974682A (zh) * 2012-12-20 2013-03-20 黑龙江昕泰管业有限公司 高速打孔机
CN104511549A (zh) * 2014-12-16 2015-04-15 衢州市凡工电气科技有限公司 一种锥台形工件双面自动进料自动冲压装备
CN115608833A (zh) * 2022-11-17 2023-01-17 香河海潮制件有限公司 汽车底盘零部件多工位冲压成型装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE472282A (de) * 1941-03-24
US3322011A (en) * 1964-06-15 1967-05-30 Yoder Co Flying punch
US3892154A (en) * 1973-12-12 1975-07-01 Marcus L Duffy Structural steel punch
US5199339A (en) * 1990-04-23 1993-04-06 C & M Enterprises, Inc. H beam hole punch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429016C (zh) * 2006-11-30 2008-10-29 张家港联亿电子有限公司 一种自动送料装置
CN102974682A (zh) * 2012-12-20 2013-03-20 黑龙江昕泰管业有限公司 高速打孔机
CN104511549A (zh) * 2014-12-16 2015-04-15 衢州市凡工电气科技有限公司 一种锥台形工件双面自动进料自动冲压装备
CN115608833A (zh) * 2022-11-17 2023-01-17 香河海潮制件有限公司 汽车底盘零部件多工位冲压成型装置
CN115608833B (zh) * 2022-11-17 2023-07-21 香河海潮制件有限公司 汽车底盘零部件多工位冲压成型装置

Also Published As

Publication number Publication date
ITBO990247A0 (it) 1999-05-11
EP1052038A3 (de) 2002-07-17
IT1309246B1 (it) 2002-01-16
ITBO990247A1 (it) 2000-11-11

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