EP1052037A2 - Fliegende Stanzmaschine für stranggegossenen Profile - Google Patents

Fliegende Stanzmaschine für stranggegossenen Profile Download PDF

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Publication number
EP1052037A2
EP1052037A2 EP00109867A EP00109867A EP1052037A2 EP 1052037 A2 EP1052037 A2 EP 1052037A2 EP 00109867 A EP00109867 A EP 00109867A EP 00109867 A EP00109867 A EP 00109867A EP 1052037 A2 EP1052037 A2 EP 1052037A2
Authority
EP
European Patent Office
Prior art keywords
punching
speed
section bar
moving
section bars
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Withdrawn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
EP00109867A
Other languages
English (en)
French (fr)
Other versions
EP1052037A3 (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 EP1052037A2 publication Critical patent/EP1052037A2/de
Publication of EP1052037A3 publication Critical patent/EP1052037A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work

Definitions

  • the present invention relates to machines fit to carry out slots in metallic and non-metallic section bar, in particular the invention refers to a stepless punching machine for extruded section bars for roller shutters.
  • stepless electromechanical punching machines in other words, machines for carrying out the slots in the section bars moving continuously, without stopping the section bars to operate the punching.
  • these machines have a maximum feeding speed limit of the section bars of 33-34 meters per minute, because in each punching cycle the punches must firstly "follow” the moving section bars, then punch these latter keeping the same feeding speed of the section bar and finally lift the punches from the section bar, always keeping the punches according to the section bar movement.
  • a further drawback is that the punches wear out easily due to their continuous moving in correspondence of the punching and namely the entry to and exit from the slots carried out by them in the continuously moving section bar.
  • the brushless electric motors and the hydraulic cylinders cause a relevant increase of the realization costs of these punching machines in comparison with the "electromechanical" machines and even more, they consume generally a lot of energy.
  • the main object of the present invention is to propose a punching machine to carry out slots in section bar stepless moved, for instance, coming out directly from extruders, of metallic and nonmetallic type, in other words for instance, in aluminum or in plastics, at the same time increasing the feeding and punching speed of section bars.
  • Further object is to propose a machine automatically setting the punching pitch, keeping it constant, for instance despite of the wear out of the feeding means of the section bars.
  • a further object is to propose a machine of simple realization, low cost and high reliability.
  • This machine 1 is supported by the frame 9 having adjustable feet 8 and to which is connected a table 7 fit to support the section bars moving through the machine along its working axis.
  • the moving means 10 includes an electric motor 2 connected by means of belts 4 to a flywheel 3 keyed on a main shaft 11 rotationally supported by the frame 9 by means of a bearing center body 19 interposed therein.
  • the punching means 20 include a punch 21 lined up along the section bar moving direction and it is supported by a first carriage 22 fit to slide vertically on a guide 35, fixed to the shifting means 30, by means of the connection to an eccentric member 23, keyed on the main shaft 11 of the moving means 10.
  • eccentric member 23 consists of an eccentric 23b and a connecting rod 23a.
  • the shifting means 30 include a second carriage 31 sliding on a pair of guides 32 parallel to the moving direction of the section bars.
  • the guide 35 fit for sliding the first carriage 22 is sideways and vertically connected to said second carriage 31.
  • the driving means 50 include a pair of belts 33, having the first ends fixed to the opposite side of the second carriage 31 and the remaining ends are fixed to the indexer means 40 by means of a pair of sector gears 51.
  • Each sector gear 51 consists of a first circular segment 51a, followed by a second linear segment 51b to which the related end of the belt 33 is fixed, and is connected to the output shaft 47 of the indexer means 40 in order to be radially shiftable in respect to this latter in order to change the linear shifting speed of the shifting means 30 as a consequence of the oscillation speed change of the sector gears 51, as a consequence of the change of the arm length of the force that converts the rotational motion of the output shaft 47 into the linear motion of the second carriage 31.
  • the indexer means 40 include an oscillator 41 whose input shaft 42 is driven by the main shaft 11 by means of a belt 44 and whose output shaft 47 transmits an oscillating motion to the driving means 50.
  • Figure 5 shows a diagram of the motion law of the oscillator 41 in which:
  • a further rotation of 60 degrees drives the second carriage 31 to a zero speed during a further rotation 62 (figure 5) equal to 6 degrees until this latter inverts the motion in the following rotation of 118 degrees of the flywheel 3, causing a maximum returning speed Vr of the second carriage 31 to the top dead point, that is the origin of a further punching cycle.
  • the motion inversion phase persists during a rotation of 6 degrees of the flywheel 3.
  • the operation of said machine provides first to reach the extrusion speed of the section bars and the punching pitch in order to establish the rotation speed of the flywheel 3 and thus, consequently to change it, for instance, by means of a known and not shown speed variator.
  • the operation of the electric motor 2 causes the rotation of the main shaft 11, and therefore the rotation of the eccentric 23b and of the connecting rod 23a that cyclically lowers the first supporting carriage 22 of the punch 21 toward the table 7.
  • the punch movement and then the consequent realization of a series of slots in the section bars occur in phase relationship with the forward motion of the section bar.
  • a turn of the flywheel 3 causes a 45 degrees forward and 45 degrees backward rotation of the output shaft of the oscillator according to the motion law above mentioned and carried out by the internal kinematic motion of the oscillator 41.
  • the forward rotation angle is the working angle during which the second carriage 31 "follows" the section bar at null relative speed, in order to punch the slots through the section bar by means of the punch 21 not moving relatively with the section bar.
  • the adjustment of the sector gears 51 causes a "precise” regulation of the shifting speed of the second carriage 31 acting on the variation of the connection radius length of the timing belt 33 to the output shaft 47 of the oscillator 41.
  • the main advantage of the present invention is to provide a punching machine fit to carry out the slots on the stepless moving section bars, for instance directly at the output of the extruders, of the metallic and non metallic kind, in other words, for instance, made of aluminum or plastic material, so increasing at the same time the feeding and punching speeds of the section bars.
  • Another advantage is to provide a machine able to set automatically the punching pitch length, keeping it constant, for instance, despite of the wear out of the feeding 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)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
EP00109867A 1999-05-11 2000-05-10 Fliegende Stanzmaschine für stranggegossenen Profile Withdrawn EP1052037A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO990248 1999-05-11
IT1999BO000248A IT1309247B1 (it) 1999-05-11 1999-05-11 Macchina asolatrice in continuo di profili estrusi

Publications (2)

Publication Number Publication Date
EP1052037A2 true EP1052037A2 (de) 2000-11-15
EP1052037A3 EP1052037A3 (de) 2002-07-17

Family

ID=11343977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109867A Withdrawn EP1052037A3 (de) 1999-05-11 2000-05-10 Fliegende Stanzmaschine für stranggegossenen Profile

Country Status (2)

Country Link
EP (1) EP1052037A3 (de)
IT (1) IT1309247B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104139123A (zh) * 2013-05-10 2014-11-12 佛山市顺德区精锻机械制造实业有限公司 冲床自动送料装置

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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104139123A (zh) * 2013-05-10 2014-11-12 佛山市顺德区精锻机械制造实业有限公司 冲床自动送料装置

Also Published As

Publication number Publication date
ITBO990248A0 (it) 1999-05-11
IT1309247B1 (it) 2002-01-16
EP1052037A3 (de) 2002-07-17
ITBO990248A1 (it) 2000-11-11

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