WO1991001828A1 - Dispositif pour le cintrage de tôles - Google Patents

Dispositif pour le cintrage de tôles Download PDF

Info

Publication number
WO1991001828A1
WO1991001828A1 PCT/EP1990/001178 EP9001178W WO9101828A1 WO 1991001828 A1 WO1991001828 A1 WO 1991001828A1 EP 9001178 W EP9001178 W EP 9001178W WO 9101828 A1 WO9101828 A1 WO 9101828A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
rollers
stop
bending edges
filler
Prior art date
Application number
PCT/EP1990/001178
Other languages
German (de)
English (en)
Inventor
Xaver Lipp
Original Assignee
Reinhardt Maschinenbau Gmbh
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 Reinhardt Maschinenbau Gmbh filed Critical Reinhardt Maschinenbau Gmbh
Publication of WO1991001828A1 publication Critical patent/WO1991001828A1/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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers

Definitions

  • the invention relates to a device for bending sheet metal to form bending edges that run parallel to one another and at a distance from one another, according to the preamble of patent claim 1.
  • Sheets processed by means of such a device are used, for example, for the production of duct elements for air conditioning and air conditioning systems in order to stiffen the wall surfaces of these duct elements, which are generally rectangular in cross section.
  • the sheet provided with the bending edges is therefore bent into a channel element in such a way that the bending edges run in the circumferential direction of the channel element.
  • the filler pieces allow an increase in the gap to the value caused by the fold when a fold passes through the gap between the two rollers of a pair of rollers, the return spring ensuring that the fold profile of the filler piece remains in contact with the fold and the filler piece returns to the starting position as soon as the fold has left the gap between the rollers.
  • the sheet or web can therefore advantageously run continuously through the device, even if there are folds running transversely to the transport direction.
  • both rolls of each pair of rolls can each have a filler piece, provided that the fold protrudes on both sides of the web or the board.
  • Advantageous embodiments of the filler are the subject of claims 2 to 3.
  • FIG. 1 is a perspective view of a channel element which is made from a sheet metal machined by means of the exemplary embodiment
  • Fig. 2 shows a section along the line II-II
  • FIG. 5 shows an end view of the pair of rollers shown in FIG. 5,
  • FIG. 7 shows a side view of one of the control disks and the stop controlled by it.
  • a sheet metal web which is composed of pieces which follow one another in the longitudinal direction of the web and which are connected to one another by a fold 1 running in the transverse direction of the web, with bending edges 2 arranged next to one another in the longitudinal direction of the web and at equal intervals
  • one is to be provided as a whole 3 designated device is provided, which has a number of roller pairs 4 corresponding to the number of bending edges 2 to be formed.
  • These pairs of rollers 4 are arranged in a rotationally fixed manner at a distance corresponding to the distance between the bending edges 2 on an upper shaft 5 or a lower shaft 6 running parallel to this.
  • the upper shaft 5 and the lower shaft 6 are mounted horizontally in a frame 7 and can be driven synchronously in opposite directions.
  • the associated drive motor is not shown in FIG. 3, since such drives are known.
  • the outer surface of one roller 8 of each pair of rollers 4 forms a wedge-shaped groove 9 running in the circumferential direction.
  • the circumferential surface of the other roller 10 has a corresponding wedge-shaped cross-sectional profile.
  • the rollers 8 and 10 are arranged alternately on both shafts 5 and 6, so that after passing through the sheet metal the zones 11 lying between two adjacent bending edges 2 each form an obtuse angle and these angles alternate open at the top and bottom, as shown in Fig. 2.
  • Tables 12 of the device 3 on both sides of the pairs of rollers align the table or web in the middle between the pairs of rollers 4 and serve as a support surface for the web or table.
  • the filler 15 has parts 16 projecting in the axial direction beyond the roller 10, both of which are of identical design and, with their material portions projecting in the direction of rotation and counter to the direction of rotation of the recess 14, form two guide grooves in which the roller 10 engages. Through these guide grooves, the filler 15 is aligned with the recess 14 in the axial direction.
  • two prestressed compression springs 17 each engage the parts 16 symmetrically with respect to the filler piece 15, which are supported on the other hand on two brackets 18 which protrude from the two end faces of the roller 10. stand. These prestressed compression springs 17 seek to hold the parts 16 in contact with stop elements 19 which protrude into the displacement path of the parts 16. When the parts 16 abut the stop elements 19, the profile provided on the radially outward-facing end face of the filler piece 15 connects continuously to the profile of the roller 10.
  • the depth of the recess 14 positively limits the displaceability of the filler 15 against the shaft 6.
  • the displacement path is chosen so that it is at least equal to the thickness of the fold 1.
  • the compression springs 17 keep the filler pieces 15 in their greatest distance from the shaft. If, as shown in FIG. 6, a fold 1 runs in between the rollers 8 and 10 of each pair of rollers 4, the filler pieces 15 are displaced against the shaft 6 against the force of the compression springs 17 in accordance with the thickness of the fold 1. As a result, the fold 1 can also run through the device and be provided with the bending edges 2. As soon as the fold 1 has left the rollers 8 and 10, the compression springs 17 bring the filler pieces 15 back into the position defined by the stop elements 19.
  • the distance between two folds 1 does not correspond to the circumference of the rollers 8 and 10 and also the distance of the first fold 1 from the front edge of the table or web 20 can not be matched to the angular position of the rollers 8 and 10, project into the path of the folds 1 stop lugs 21.
  • These stop lugs 21 are arranged at a distance from one another in the longitudinal direction of the shaft 6 and are all of the same design. As a rule, it will suffice to arrange a stop nose 21 symmetrically to the center of the roller set formed from the roller pairs 4.
  • the stop lug 21 is provided on a pivoting lever 22 which extends below the web 20 in the direction of transport and is pivotally mounted on the frame 7 with an axis parallel to the shaft 6 in the region * of its one end is. In the area of its other end, a tension spring 23 engages it, which tries to pivot it away from the track 20.
  • the stop lug 21 is located somewhat in front of the plane defined by the shafts 5 and 6, so that the fold 1 comes into contact with the stop lug 21 before it is caught by the pairs of rollers 4.
  • a scanning roller 24 is rotatably mounted on the pivot lever 22 with an axis parallel to its pivot axis, which roller roller bears against a control cam 25 'of a control disk 25 because of the tension spring 23.
  • the control disc 25 is arranged in a rotationally fixed manner on the shaft 6, which carries all those rollers 8 and 10 in the same angular position which are provided with a recess 14 and a filler 15.
  • the control curve formed by the outer surface of the control disc 25 has a recess 26, which thus relate to the angular position of the recesses 14 is arranged that the scanning roller 24 runs into it when the filler pieces 15 are aligned with the fold 1 held by the stop lugs 21.
  • the stop lugs 21, which until then have prevented the web 20 from being transported further by the rotating rollers 8 and 10, are moved out of the web of the fold 1. Therefore, it can now be transported further by the driven rollers 8 and 10 and provided with the bending edges 2.
  • a slide shoe 27 is arranged above the stop lugs 21, in such a way that the gap between it and the stop lugs 21 in their The blocking position is smaller than the thickness of the fold 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Un dispositif sert à cintrer des tôles en formant des bords de cintrage parallèles espacés. Chacune des régions adjacentes délimitées par deux bords adjacents de cintrage englobe un angle obtus et ces angles s'ouvrent alternativement dans des directions opposées. Le dispositif comporte des paires de cylindres adjacentes équiaxiales situées à distance des bords de cintrage. Chaque paire de cylindres forment un intervalle angulaire. Pour des tôles (20) avec des plis (1) perpendiculaires aux bords de cintrage (2) à former, au moins un cylindre (8) de chaque paire de cylindres (4) comporte en un point de sa périphérie un évidement (14) dans lequel peut être insérée radialement une pièce intercalaire (15). La surface extérieure de ladite pièce, tournée vers l'axe (6) du cylindre, présente le même profil que la surface d'enveloppe du cylindre. La pièce intercalaire peut être poussée, à l'encontre de la force d'un ressort, d'une position, dans laquelle sa surface extérieure affleure la surface d'enveloppe du cylindre, dans une position enfoncée dans laquelle la différence de hauteur entre la face extérieure et la surface d'enveloppe du cylindre est égale à la longueur de saillie du pli au-dessus de la face de la tôle en contact avec la surface d'enveloppe du cylindre.
PCT/EP1990/001178 1989-08-10 1990-07-19 Dispositif pour le cintrage de tôles WO1991001828A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3926472.6 1989-08-10
DE19893926472 DE3926472C1 (fr) 1989-08-10 1989-08-10

Publications (1)

Publication Number Publication Date
WO1991001828A1 true WO1991001828A1 (fr) 1991-02-21

Family

ID=6386889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/001178 WO1991001828A1 (fr) 1989-08-10 1990-07-19 Dispositif pour le cintrage de tôles

Country Status (2)

Country Link
DE (1) DE3926472C1 (fr)
WO (1) WO1991001828A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102000717A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种段差成型模具
CN102000739A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种滚筋模具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
No relevant documents disclosed *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102000717A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种段差成型模具
CN102000739A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种滚筋模具

Also Published As

Publication number Publication date
DE3926472C1 (fr) 1991-02-07

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