WO1995005254A1 - Dispositif de regulation - Google Patents

Dispositif de regulation Download PDF

Info

Publication number
WO1995005254A1
WO1995005254A1 PCT/EP1994/002739 EP9402739W WO9505254A1 WO 1995005254 A1 WO1995005254 A1 WO 1995005254A1 EP 9402739 W EP9402739 W EP 9402739W WO 9505254 A1 WO9505254 A1 WO 9505254A1
Authority
WO
WIPO (PCT)
Prior art keywords
speed
motor
roller
stretching
cutting
Prior art date
Application number
PCT/EP1994/002739
Other languages
German (de)
English (en)
Inventor
Michael Späth
Original Assignee
Spaeth Michael
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 Spaeth Michael filed Critical Spaeth Michael
Priority to AU76537/94A priority Critical patent/AU7653794A/en
Priority to EP94926845A priority patent/EP0700322A1/fr
Priority to JP7506761A priority patent/JPH08505326A/ja
Publication of WO1995005254A1 publication Critical patent/WO1995005254A1/fr

Links

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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
    • B21D31/046—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal making use of rotating cutters
    • 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
    • B21D43/021—Control or correction devices in association with moving strips
    • B21D43/022—Loop-control
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/08—Making hollow objects characterised by the structure of the objects ball-shaped objects

Definitions

  • Balls made of expanded metal which in turn is made of thin aluminum foil etc., are filled, for example, as explosion protection in fuel tanks etc.
  • the manufacture of the balls by cutting the aluminum strips in the longitudinal direction, transverse stretching, roughly compressing the strips of expanded metal in the transverse direction, cutting individual sections to length and pressing the sections together to form balls is known in principle, e.g. from German patent applications P 38 14 448 and P 38 16 792.
  • the problem is on the one hand that the aluminum foil used is usually from less than 1/10 mm thick at the desired speeds is already difficult to handle, and handling becomes even more unstable after cutting and transverse stretching, since the finished stretch material undergoes a length reduction of approximately 10% during its transverse stretching, and exactly this length reduction Tensile load in the longitudinal direction can be reversed again.
  • the material for the individual processing stations must be under a certain minimum tension in the longitudinal direction in order to prevent folding - viewed in the side view - or running up in front of a station, which immediately leads to destruction of the aluminum strip. For this reason it is known in principle to use tensioning rollers when handling running belts.
  • a direct current motor is not used, which is less expensive, but has a too unfavorable torque curve in certain speed ranges, which initially accelerates when accelerating and when the speed threshold is reached too strong a pull occurs with the tape torn off.
  • the DC motor used is directed with a speed monitoring device, for example an optoelectric sensor, which is aimed at an incremental turntable, which is coupled to the motor shaft.
  • This actual speed is increased or decreased depending on the state of the last previous tensioning pulley, which is determined by the stretching unit and usually also after the cleaning device connected downstream.
  • a non-driven deflection roller is used as the tensioning roller, which due to its own weight lies in an upwardly open loop of the belt, this tensioning roller being movable in essentially perpendicular guides.
  • the tensioning pulley will move upwards in its guides up to a predetermined end stop.
  • the height of the tensioning roller between the upper and lower end stops is constantly controlled by a light barrier, which is directed from above onto the tensioning roller or a reflector firmly connected to it, and so that the current altitude of this tension pulley can be measured at any time.
  • the motor of the end reel is accelerated or slowed down by control electronics so that the tensioning roller is kept in a central area and preferably at rest.
  • the motor of the end reel is additionally equipped with a primary gear with, for example, four successive speed levels.
  • the gearbox switches the motor to the next slower gear stage and, when the lower end stop is reached, to the next faster gear stage.
  • the stretching unit is driven at a constant speed, and instead the speed of the previous cutting unit is regulated.
  • the braking force applied to the supply reel at the beginning of the system does not essentially vary according to the intended instantaneous speed of the cutting unit, but rather according to the mass still present on the supply reel and the resulting inertia against changes in speed.
  • the balls cannot be produced from the expanded material, as in the previously known solutions, by means of a star-shaped, step-wise rotating star into which the sections of the expanded material are introduced on one side, then towards Balls are compacted and fall out of the star again on the other side, since at the intended running speed the flying force adversely affects the entire process and is difficult to predict.
  • the stretch material strip is first pushed roughly to the side by pulling it through a calibration opening 34, as a result of which the strip is rippled open in the longitudinal direction.
  • This collapsed band is then cut to certain lengths and the sections thus obtained are deformed into spheres by negative molding.
  • the clamping of the strips pushed together through the calibration opening is carried out at a different location and with separate devices than the cutting off.
  • the front, free end of the film strip, which has not yet been deflected, is inserted into the cylindrical stamp guide in a stamp block which is open on both end faces.
  • the rear opening of the punch guide is closed by an end punch 23 with a semicircular concave front face.
  • the front section is cut to length at the beginning and preferably still inside the punch guide by means of knives which can be moved relative to one another and are preferably guided directly in the punch block.
  • a front stamp 22 is also introduced into the stamp guide from the front, and the ball is thus formed between the front stamp and the end stamp within the stamp guide.
  • the front punches are arranged in a row next to one another, specifically on one of two knives 27 which are movable relative to one another and to which all the front punches are applied.
  • cutting openings are left open in the knives, the cross-section of which can be reduced by pushing the knives against each other in order to clamp the film strip and thereby also be able to be cyclically transported in the longitudinal direction, for example into the punch guide.
  • the stamp block can be displaced in the transverse direction with respect to the knives for clamping and transporting the stretching material and thus also with respect to the front stamps which are mounted on this knife.
  • the stamp guides of the stamp block can be aligned with the stamps in one work step and with the openings in the clamping device, through which the stretch material is fed into the stamp guides, in the other work step.
  • the stamp block is preferably moved while the knife with the front stamps remains at rest.
  • the front punch and end punch can of course be moved in and out of the punch guide in the axial direction.
  • the end stamp is removed and the front stamp is pressurized with compressed air, whereby the ball is blown out.
  • the same knives are used, which are arranged in pairs and can be moved against each other, which are used in the plane of the front stamp only for clamping and for axial further transport within the stamp block for actual cutting.
  • Fig. 1 is a side view of the expanded material unit and Fig. 2 is a schematic representation of a spherical shape unit.
  • FIG. 1 shows a side view of the production of the essentially endless stretch material wound on the end reel 7, which is then processed into balls with the device in FIG. 2 away from the roll.
  • the raw material is in the form of a roll wound on a supply reel 2, and during the passage of the film strip 1 through a lubrication unit, then the cutting unit 6, the stretching unit 5 and the suction unit 42 to a widened in the transverse direction and in the longitudinal direction shortened stretch material is processed, which has a thickness about 100 times greater than * the starting material.
  • a first tensioning roller 8 is arranged between the cutting unit 6 and the stretching unit 5 and a second tensioning roller 9 is arranged between the stretching unit 5 and the end reel 7.
  • the stretching unit 5 is driven at a constant speed after the machine has started up.
  • Two toothed belts 43 run with their toothed sides against each other in a manner known per se and each hold an outer edge of the film strip 1 between them.
  • the film strip runs onto a run-up body or a run-up belt 45, so that the transverse dimensions of the film band increase in the course of the run-up body 45, despite the parallel arrangement of the edges of the film band.
  • a downward and upward open loop of the film strip 1 is formed by two deflection rollers 38, 39, the deflection roller 8 resting on the film strip 1 in the lowest point thereof.
  • the weight of this tensioning roller 8 determines the tension of the film strip 1 between the cutting unit 6 and of the stretching unit 5.
  • the speed of the cutting unit 6, which essentially consists of counter-rotating cutting roller 3 and pressing roller 4 is only theoretically equal to the throughput speed through the stretching unit 5, since instantaneous speed differences can arise due to the inherent elasticity and spring action of the film strip 1 . This can be done either by regulating the drive speed of the cutting unit 6 and / or by strengthening or weakening the outlet brake on the supply reel 2, which is also realized by a controllable electric motor.
  • the regulation of the cutting unit 6 or the braking effect on the supply reel 2 is carried out as a function of the height of the first tensioning roller 8.
  • the tensioning roller 8 reaches or passes through the upper or lower sensor 11 'or 12', the speed of the preceding units is increased or decreased step by step, for example in 1% steps, until the tensioning roller 8 again in the area between the sensors 11 'and 12'.
  • the sensors 11 'and 12' are electrically coupled to the drive control of the preceding units via a control.
  • the end reel 7 has to be considered as the most difficult point of the system.
  • the speed of the motor 10 of the end reel 7 depends not only on the working speed of the preceding units and the cumulative changes in speed due to longitudinal expansion etc., but also on the instantaneous diameter of the end reel 7. This diameter, however, is only somewhat circular at the beginning , while with increasing diameter and non-uniform compression of the individual layers of the stretch material, the outer contour becomes more and more out of round and thus there are different speeds of the film strip even in the course of a single revolution of the end reel with constant angular speed.
  • the film strip 1 is first guided over at least one, preferably two or more cleaning brushes 16, for example in an S-shape, and then after the stretching unit via a second tensioning roller 9, before the film strip 1 sucks off small residual parts in the dust extraction 42 and before the deflection rollers 35/36 with a full end reel 7, cutting to length with the cutting knife 41 is possible.
  • the cleaning brushes 16 not only remove solid particles, but the brushes are chosen with regard to bristle stability in the longitudinal direction (radial) according to material, thickness and length such that each of the brushes dampens the short-term speed changes.
  • Medium-quality 70 ⁇ m thick aluminum foil is a brush with a diameter of approximately 10 cm and a free bristle length of approximately 3 cm.
  • the speed of the motor 10 of the end reel 7 is not only controlled when one of the upper or lower sensors 11 or 12 is run through, but also in the area in between.
  • a reflector 15 is fastened to the tensioning roller 9 and is illuminated by a light barrier 14 mounted approximately vertically above it.
  • the light barrier 14 thus continuously controls the height of the tension roller 9 and is connected to the speed control device of the motor 10 via a control.
  • the motor 10 is also continuously checked for its actual speed by optoelectronic scanning of an incremental tachometer disc rotating with the motor shaft. The actual speed is also continuously passed on to the speed control device.
  • the motor 10 has a stepped transmission with speed ranges that adjoin one another and do not overlap or only overlap very little. If, despite this fine control described, this second tensioning roller reaches the upper or lower sensor 11 or 12, in this case the motor 10 is switched to the next faster or lower gear stage, within which the fine adjustment of the speed is then carried out again by means of the light barrier 14 .
  • Fig. 2 shows the spherical shape unit, the direction of passage is drawn from left to right with an arrow.
  • the strip of expanded material is drawn from a supply reel (not shown) or a corresponding number of working units realized from one another from a plurality of supply reels via the calibration openings 34 of the calibration rail 20, which have a strongly rounded inlet, and is therefore strong in the transverse direction pushed together to an approximately round cross-section.
  • This base material is guided through the overlapping opening of the cutting openings 28 of the two first knives 26 and 27, which are movable relative to one another and can thereby change their free passage in order to further compress the base material that is passed through or also to cut it off entirely.
  • a complete cutting is not intended with the knives 26 and 27, but only a compression, which also makes it possible to pull the base material in the direction of the arrow and back, that is to say in the longitudinal direction. Actual cutting takes place with the identically designed knives 26 ', 27', which are located within the stamp block 24.
  • the cutting openings 28 are not circular, but have at one point a smaller, additional bulge than a semicircle 29, the semicircle 29 of the cutting Openings 28 of the two knives 26, 27 are arranged in opposite directions.
  • the cross-section of the two semicircles 29 can be reduced in relation to one another during a movement, as indicated by the arrowheads drawn through them, as a result of which the strand passed through is compressed to about 1/4 of its diameter and thereby clamped at one point becomes.
  • the strand clamped therein is inserted into a stamp guide 25 flush with the openings 28 and 29, respectively, by bringing the knives 26, 27 closer to the stamp block 24.
  • the punch guides are now aligned with the front punches 22 and the end punches 23, and at the same time with the cutting openings 28 in the knives 26 ', 27', so that a ball is formed from the section 34 by retracting the punches 22, 23.
  • This is removed from the stamp guide 25 by pulling the end stamp 23, which is attached to a stamp plate with the other end stamps of the other workstations, back out of the stamp guide 25 in the direction of arrow 48 and at the same time from the lowest point of the end-side, hemispherical recess the front stamp 22 Compressed air supplied via the compressed air connection 30 and the ball is thereby blown out of the stamp block.
  • the advantage of the movement of the stamp block 24 in the transverse direction and the fact that the knife 27 stops in the transverse direction except for the clamping movement lies in the fact that the supply of the expanded metal strip is thereby facilitated by the feeding positions and the immobility of the calibration rail 20 being always constant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne un dispositif permettant de produire des objets sphériques homogènes en matériau étirable, réalisé à partir de rubans de feuille, notamment à partir de feuille d'aluminium faisant moins de 0,1 mm d'épaisseur. Ce dispositif comporte un dévidoir d'alimentation (2), un ruban de feuille enroulé qui forme un rouleau, une unité de coupe (6) qui travaille en continu au moyen d'un rouleau de coupe (3) et d'un rouleau presseur (4), une unité d'étirage (5) qui étire en continu dans le sens transversal, au moins une bobine terminale (7) destinée à recevoir le matériau étirable fini et au moins un rouleau tendeur (8, 9) disposé entre le dévidoir et la bobine terminale. Afin d'assurer un fonctionnement durable sans à coups du dispositif, il est prévu de réguler le régime du moteur (10) de la bobine terminale (7). Les rouleaux tendeurs (8, 9) situés entre l'unité de coupe (6) et l'unité d'étirage (5), ainsi qu'entre ladite unité d'étirage (5) et la bobine terminale (7) sont des rouleaux non commandés qui peuvent coulisser dans des glissières (13) approximativement verticales, entre un détecteur supérieur (11, 11') et un détecteur inférieur (12, 12'). Leurs poids dépend du matériau dans lequel le film est réalisé, de la résistance et de l'épaisseur de ce dernier. Le régime du moteur (10) peut être régulé. Lorsque les rouleaux tendeurs (8, 9) atteignent le détecteur supérieur (11, 11'), le régime est réduit, et lorsqu'ils atteignent le détecteur inférieur (12, 12'), le régime est augmenté, de manière à ce que les rouleaux tendeurs demeurent en position entre les deux détecteurs (11, 12).
PCT/EP1994/002739 1993-08-17 1994-08-17 Dispositif de regulation WO1995005254A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU76537/94A AU7653794A (en) 1993-08-17 1994-08-17 Controller
EP94926845A EP0700322A1 (fr) 1993-08-17 1994-08-17 Dispositif de regulation
JP7506761A JPH08505326A (ja) 1993-08-17 1994-08-17 制御器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934327670 DE4327670C2 (de) 1993-08-17 1993-08-17 Vorrichtung zum Herstellen von Streckmaterial zur anschließenden Herstellung von homogenen Kugeln
DEP4327670.9 1993-08-17

Publications (1)

Publication Number Publication Date
WO1995005254A1 true WO1995005254A1 (fr) 1995-02-23

Family

ID=6495408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/002739 WO1995005254A1 (fr) 1993-08-17 1994-08-17 Dispositif de regulation

Country Status (6)

Country Link
EP (1) EP0700322A1 (fr)
JP (1) JPH08505326A (fr)
AU (1) AU7653794A (fr)
CA (1) CA2147242A1 (fr)
DE (1) DE4327670C2 (fr)
WO (1) WO1995005254A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309187A (en) * 1996-01-19 1997-07-23 Minster Machine Co Stamping press damped follower looped control system
WO2009105914A1 (fr) * 2008-02-27 2009-09-03 Huang Xiaodong Appareil de traitement pour matériau anti-explosion et son dispositif de commande
CN117732951A (zh) * 2024-02-07 2024-03-22 江苏宣胜金属科技有限公司 一种钢管头压纹路设备及其方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009050486B4 (de) 2009-10-23 2011-06-30 Späth, Michael, Dr., 82166 Zylindrischer Formkörper, Verfahren zu dessen Herstellung sowie dessen Verwendung für die Explosions- und Schwallschutzreduzierung bei Fahrzeugen
DE102009050485B4 (de) 2009-10-23 2011-07-28 Späth, Michael, Dr., 82166 Fahrzeuge mit einer Explosions- und Brand- sowie Schwallschutzeinrichtung
CH702938A1 (de) * 2010-04-13 2011-10-14 Soudronic Ag Anordnung zur Bildung einer Bandschlaufe und Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln.
CN112474875B (zh) * 2021-01-09 2021-07-20 兴化市东昌合金钢有限公司 一种钛合金钢丝冲料制造方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126985A (en) * 1966-01-21 1968-09-11 Otto Carl Selden A tape winding or unwinding device
DE1463761A1 (de) * 1963-07-15 1969-06-26 Windmoeller & Hoelscher Vorrichtung zum Aufrechterhalten einer gleichbleibenden Zugspannung fuer mittels eines Achswicklers aufzuwickelnde Werkstoffbahnen
FR2134289A1 (fr) * 1971-04-30 1972-12-08 Etudes Et Fab Nautiques Autom
DE3504136A1 (de) * 1984-02-21 1985-08-22 Hannes Wiener Neustadt Schrenk Vorrichtung zur herstellung von streckmetall
US4804898A (en) * 1988-02-22 1989-02-14 Rapid-Air Corporation Stock feed apparatus
NL8801128A (nl) * 1988-04-29 1989-11-16 Manfred Furch Inrichting voor het vervaardigen van vullichamen, die kunnen worden aangebracht in een brandstofreservoir, zoals dat van een voertuig.
AT389658B (de) * 1987-09-04 1990-01-10 Gass Helmut Verfahren und vorrichtung zur herstellung von fuellmaterial fuer hohlraeume sowie derartiges fuellmaterial
EP0486464A1 (fr) * 1990-11-13 1992-05-20 Hannes Schrenk Dispositif pour former des corps à stabilité dimensionnelle en forme de balle en matière à fils fins

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814448A1 (de) * 1988-04-28 1989-11-09 Spaeth Michael Max Vorrichtung zur herstellung von streckmaterial
DE3816792A1 (de) * 1988-05-17 1989-11-23 Spaeth Michael Max Verfahren und vorrichtung zum herstellen von fuellkoerpern aus streckmaterial

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1463761A1 (de) * 1963-07-15 1969-06-26 Windmoeller & Hoelscher Vorrichtung zum Aufrechterhalten einer gleichbleibenden Zugspannung fuer mittels eines Achswicklers aufzuwickelnde Werkstoffbahnen
GB1126985A (en) * 1966-01-21 1968-09-11 Otto Carl Selden A tape winding or unwinding device
FR2134289A1 (fr) * 1971-04-30 1972-12-08 Etudes Et Fab Nautiques Autom
DE3504136A1 (de) * 1984-02-21 1985-08-22 Hannes Wiener Neustadt Schrenk Vorrichtung zur herstellung von streckmetall
AT389658B (de) * 1987-09-04 1990-01-10 Gass Helmut Verfahren und vorrichtung zur herstellung von fuellmaterial fuer hohlraeume sowie derartiges fuellmaterial
US4804898A (en) * 1988-02-22 1989-02-14 Rapid-Air Corporation Stock feed apparatus
NL8801128A (nl) * 1988-04-29 1989-11-16 Manfred Furch Inrichting voor het vervaardigen van vullichamen, die kunnen worden aangebracht in een brandstofreservoir, zoals dat van een voertuig.
EP0486464A1 (fr) * 1990-11-13 1992-05-20 Hannes Schrenk Dispositif pour former des corps à stabilité dimensionnelle en forme de balle en matière à fils fins

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309187A (en) * 1996-01-19 1997-07-23 Minster Machine Co Stamping press damped follower looped control system
GB2309187B (en) * 1996-01-19 1998-07-15 Minster Machine Co Stamping press damped follower looped control system
WO2009105914A1 (fr) * 2008-02-27 2009-09-03 Huang Xiaodong Appareil de traitement pour matériau anti-explosion et son dispositif de commande
EP2251113A1 (fr) * 2008-02-27 2010-11-17 Xiaodong Huang Appareil de traitement pour matériau anti-explosion et son dispositif de commande
EP2251113A4 (fr) * 2008-02-27 2011-06-01 Xiaodong Huang Appareil de traitement pour matériau anti-explosion et son dispositif de commande
CN101932392B (zh) * 2008-02-27 2012-10-03 上海华篷防爆科技有限公司 防爆材料加工设备及其控制装置
CN117732951A (zh) * 2024-02-07 2024-03-22 江苏宣胜金属科技有限公司 一种钢管头压纹路设备及其方法
CN117732951B (zh) * 2024-02-07 2024-05-07 江苏宣胜金属科技有限公司 一种钢管头压纹路设备及其方法

Also Published As

Publication number Publication date
AU7653794A (en) 1995-03-14
DE4327670C2 (de) 1996-04-25
CA2147242A1 (fr) 1995-02-23
DE4327670A1 (de) 1995-02-23
JPH08505326A (ja) 1996-06-11
EP0700322A1 (fr) 1996-03-13

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