EP0163700A1 - Expanding machine - Google Patents

Expanding machine

Info

Publication number
EP0163700A1
EP0163700A1 EP19850900014 EP85900014A EP0163700A1 EP 0163700 A1 EP0163700 A1 EP 0163700A1 EP 19850900014 EP19850900014 EP 19850900014 EP 85900014 A EP85900014 A EP 85900014A EP 0163700 A1 EP0163700 A1 EP 0163700A1
Authority
EP
European Patent Office
Prior art keywords
work
piece
bars
bar
cross
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Withdrawn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
EP19850900014
Other languages
German (de)
French (fr)
Inventor
Frederick Edward Wise
Ulrich Winkler
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.)
GLAMAGARD Pty Ltd
Original Assignee
GLAMAGARD Pty Ltd
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 GLAMAGARD Pty Ltd filed Critical GLAMAGARD Pty Ltd
Publication of EP0163700A1 publication Critical patent/EP0163700A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
    • B21D47/02—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars by expanding

Definitions

  • This invention relates to the stretching or expansion of sheet material that has formed therein a pre-determined array of slots, slits or other cut-outs.
  • a machine for expanding a pre-cut or slotted work-piece having a plurality of ribs spaced apart by web portions comprising a work table, expanding means mounted for movement across the work table and including expander bars adapted to engage selected ribs of the work-piece and means for expanding the expander bars from an initial position in which the expander bars are close enough together so that the work-piece can be located on the work table with the expander bars positioned between adjacent ribs of the work ⁇ piece to a final position in which the expander bars have expanded the work-piece to a pre-determined extent.
  • a machine for expanding a work-piece comprising: (i) a frame, (ii) a work table supported by the frame, (iii) a fixed cross-bar mounted on the frame adjacent a longitudinal extent of the work table, (iv) a fixed claw mounted on the fixed cross-bar adapted to engage and hold one longitudinal extent of the work-piece, (v) a movable cross-bar mounted for transverse move ⁇ ment across the work table, (vi) a movable claw mounted on the movable cross-bar adapted to engage and hold the other .
  • linkage means connected between the fixed and movable cross-bars and supporting a plurality of expander bars adapted to engage the work-piece at pre-selected positions thereacross, and, (viii) drive means for moving the movable cross-bar away from the fixed cross-bar so as to cause the linkage means to expand whereby the expander bars expand the work-piece.
  • the machine has a plurality of fixed and moving claws which are arranged opposite one another so that the respective edges of the work-piece are gripped at pre ⁇ determined aligned locations.
  • the linkage means may be supported on the work table by nylon stilts located beneath the point of connection of each expander bar with the linkage means.
  • the fixed and moving claws are slidable along their respective cross ⁇ bars and the drive means includes an endless chain drive to which the movable cross-bar is adjustably connected.
  • the linkage means may be in the form of a series of inter ⁇ connected pivotal levers which form a scissors set or lazy tongs.
  • Fig. 1 is a diagrammatic plan view of a machine for expanding a work-piece according to one embodiment of the invention with the work-piece expanded.
  • Fig. 2A is a view taken along line IIA of Fig. 1 with the work-piece in its unexpanded disposition.
  • Fig. 2B is a view similar to Fig. 2A with the work ⁇ piece in its expanded disposition.
  • Fig. 3A is a plan view of the linkage means and expander bars of the machine shown in Fig. 1 when the work-piece is to be loaded onto the machine.
  • Fig. 3B is a view similar to Fig. 3A with the linkage means fully extended.
  • Fig. 4A is a diagrammatic view showing the loading of a work-piece onto the expander bars
  • Fig. 4B is a view similar to Fig. 4A showing the unloading of an expanded work-piece from the expander bars.
  • Fig. 5 is a partial side view of the mounting arrange ⁇ ment of the fixed claw on the fixed cross-bar
  • Fig. 6 is a partial side view showing the support arrangement for the expander bars and the linkage means on the work table
  • Fig. 7 is a partial perspective view of the machine shown in Figs. 1 to 6.
  • the machine for expanding a pre-slotted work-piece includes a main frame having legs 10, 10a interconnected by a bar 11 and which support a work table 12.
  • the main frame carries a drive motor 13 having a driven sprocket 14 around which passes a chain drive 15.
  • a movable cross-bar 18 is adjustably mounted on the chain 15 by connectors 19.
  • the fixed cross-bar 17 has a fixed claw 20 and the movable cross-bar 18 has a movable claw 21 mounted thereon.
  • the claws 20, 21 are pivotted by means of cylinders 22, 23 to engage and disengage the edges of a work-piece situated on the work table 12.
  • linkage means 24 Extending between the cross-bars 17, 18 is a plurality of linkage means 24 each of which consists of a series of pivotally interconnected levers 24a which form a scissors set.
  • the ends of the linkage means 2-4 are connected to mounting plates 25, 26 on the cross-bars 17, 18.
  • the linkage means is connected to a series of upstanding parallel expander bars 27 and at appropriate points there are downwardly depending nylon stilts 28 which support the linkage 24 on the work table 12.
  • the linkage 24 In the initial position of the movable cross-bar 18, the linkage 24 is closed so that the expander bars 27 are close together as shown in Figs 3A and 4A.
  • the linkage 24 opens to separate the expander bars 27 as shown in Figs 3B, 4B and 6.
  • the work-piece 30 consists of a plurality of ribs 31 spaced apart by web portions 32 which define a repeating H-section pattern.
  • OMP ⁇ of the ribs 31 have beads 33 which can be shaped to help retain the work-piece 30 on the expander bars 27.
  • the work- piece 30 has formed therein an array of slots 34 which when the work-piece 30 is expanded become openings 35 as shown in Figs 1 and 4B.
  • the claws 20, 21 are slidably mounted on their cross ⁇ bars 17, 18.
  • the cross-bar 17 has a rail 40 on which is mounted a carriage 41 that is locked thereto by locking bolt 42.
  • the carriage 41 has a pivotal mounting 43 for the claw 20.
  • At the opposite side of the carriage 41 there is a cylinder 22 mounted at an axis 44 which is arranged to raise and lower the jaw 45 of the claw 20 out of and in to engage with the rib 31 of the work-piece 30.
  • Appropriate control systems are provided to regulate the movement of the cross bar 18 and these include limit switches 50, 51 which are operated by abutments 52, 53 on the chain 15.
  • a brake is associated with the chain drive to prevent over-run at the end of a stroke of the cross bar 18.

Abstract

Une machine d'expansion d'une pièce à usiner prédécoupée ou à entaille (30) ayant une pluralité de nervures (31) espacées par des parties d'âme (32), comprend une table (12), des moyens d'expansion consistant en une barre transversale (17) portant des griffes (20) et des plaques de montage (25) fixées par rapport à la table (12) avec une barre transversale mobile (18) portant des griffes (21) et des plaques de montage (26) actionnées pour effectuer un mouvement transversalement par rapport à la table (12) par une roue dentée entraînée (14), une chaîne (15) et une roue de renvoi (16). Des moyens de liaison (24) sont reliés à des plaques de montage (25, 26); sur ces moyens de liaison se trouvent des barres d'expansion (27) adaptées pour engager des nervures sélectionnées (31) de la pièce à usiner (30); en actionnant l'entraînement à chaîne (14, 15, 16), les moyens de liaison (24) et les barres d'expansion (27) sont déplacés à partir d'une position initiale dans laquelle les barres d'expansion (27) sont suffisamment rapprochées pour permettre le positionnement de la pièce à usiner (30) sur la table (12) et des barres d'expansion (27) entre les nervures adjacentes (31) de la pièce à usiner vers une position finale dans laquelle les barres d'expansion (27) ont été déplacées pour effectuer une expansion de la pièce à usiner (30) d'une ampleur prédéterminée.A machine for expanding a pre-cut or notched workpiece (30) having a plurality of ribs (31) spaced apart by core portions (32), comprises a table (12), expansion means consisting in a cross bar (17) carrying claws (20) and mounting plates (25) fixed relative to the table (12) with a movable cross bar (18) carrying claws (21) and mounting plates ( 26) actuated to carry out a movement transversely with respect to the table (12) by a driven toothed wheel (14), a chain (15) and a return wheel (16). Connecting means (24) are connected to mounting plates (25, 26); on these connecting means are expansion bars (27) adapted to engage selected ribs (31) of the workpiece (30); by actuating the chain drive (14, 15, 16), the connecting means (24) and the expansion bars (27) are moved from an initial position in which the expansion bars (27) are close enough to allow the workpiece (30) to be positioned on the table (12) and expansion bars (27) between the adjacent ribs (31) of the workpiece to a final position in which the bars expansion (27) have been moved to expand the workpiece (30) by a predetermined magnitude.

Description

EXPANDING MACHINE
FIELD OF INVENTION
This invention relates to the stretching or expansion of sheet material that has formed therein a pre-determined array of slots, slits or other cut-outs.
BACKGROUND ART
For the sake of convenience, the invention will be described with reference to the stretching of an aluminium extrusion that consists of a plurality of spaced apart ribs inter-connected by and projecting either side of a web portion to provide a repeating H section pattern. However, it is to be understood that this is by way of example only and it is not to be construed as a limitation upon the scope of the invention.
DISCLOSURE OF THE INVENTION
It is an object of this invention to provide an improved machine for expanding pre-cut or slotted work- pieces such as aluminium extrusions which should ensure a regular expansion of the work-piece across the direction of expansion of the work-piece.
According to the invention there is provided a machine for expanding a pre-cut or slotted work-piece having a plurality of ribs spaced apart by web portions, said machine comprising a work table, expanding means mounted for movement across the work table and including expander bars adapted to engage selected ribs of the work-piece and means for expanding the expander bars from an initial position in which the expander bars are close enough together so that the work-piece can be located on the work table with the expander bars positioned between adjacent ribs of the work¬ piece to a final position in which the expander bars have expanded the work-piece to a pre-determined extent.
According to another aspect of the invention there is provided a machine for expanding a work-piece comprising: (i) a frame, (ii) a work table supported by the frame, (iii) a fixed cross-bar mounted on the frame adjacent a longitudinal extent of the work table, (iv) a fixed claw mounted on the fixed cross-bar adapted to engage and hold one longitudinal extent of the work-piece, (v) a movable cross-bar mounted for transverse move¬ ment across the work table, (vi) a movable claw mounted on the movable cross-bar adapted to engage and hold the other . longitudinal extent of the work-piece, (vii) linkage means connected between the fixed and movable cross-bars and supporting a plurality of expander bars adapted to engage the work-piece at pre-selected positions thereacross, and, (viii) drive means for moving the movable cross-bar away from the fixed cross-bar so as to cause the linkage means to expand whereby the expander bars expand the work-piece.
Preferably, the machine has a plurality of fixed and moving claws which are arranged opposite one another so that the respective edges of the work-piece are gripped at pre¬ determined aligned locations. Furthermore, the linkage means may be supported on the work table by nylon stilts located beneath the point of connection of each expander bar with the linkage means.
OMPI In a preferred embodiment of the invention, the fixed and moving claws are slidable along their respective cross¬ bars and the drive means includes an endless chain drive to which the movable cross-bar is adjustably connected. The linkage means may be in the form of a series of inter¬ connected pivotal levers which form a scissors set or lazy tongs.
In order that the invention may be more readily under¬ stood and put into practical effect, reference will now be made to the accompanying drawings in which:-
Fig. 1 is a diagrammatic plan view of a machine for expanding a work-piece according to one embodiment of the invention with the work-piece expanded. Fig. 2A is a view taken along line IIA of Fig. 1 with the work-piece in its unexpanded disposition.
Fig. 2B is a view similar to Fig. 2A with the work¬ piece in its expanded disposition. Fig. 3A is a plan view of the linkage means and expander bars of the machine shown in Fig. 1 when the work-piece is to be loaded onto the machine.
Fig. 3B is a view similar to Fig. 3A with the linkage means fully extended. Fig. 4A is a diagrammatic view showing the loading of a work-piece onto the expander bars, Fig. 4B is a view similar to Fig. 4A showing the unloading of an expanded work-piece from the expander bars. Fig. 5 is a partial side view of the mounting arrange¬ ment of the fixed claw on the fixed cross-bar, Fig. 6 is a partial side view showing the support arrangement for the expander bars and the linkage means on the work table, and. Fig. 7 is a partial perspective view of the machine shown in Figs. 1 to 6.
OMPI As indicated in Figs 1, 2A and 2B, the machine for expanding a pre-slotted work-piece includes a main frame having legs 10, 10a interconnected by a bar 11 and which support a work table 12. The main frame carries a drive motor 13 having a driven sprocket 14 around which passes a chain drive 15. Adjacent leg 10a there is an idler sprocket 16 around which the chain 15 also passes.
Above the leg 10a there is a fixed cross-bar 17 which will be described with reference to Fig. 5. A movable cross-bar 18 is adjustably mounted on the chain 15 by connectors 19. The fixed cross-bar 17 has a fixed claw 20 and the movable cross-bar 18 has a movable claw 21 mounted thereon. The claws 20, 21 are pivotted by means of cylinders 22, 23 to engage and disengage the edges of a work-piece situated on the work table 12.
Extending between the cross-bars 17, 18 is a plurality of linkage means 24 each of which consists of a series of pivotally interconnected levers 24a which form a scissors set. The ends of the linkage means 2-4 are connected to mounting plates 25, 26 on the cross-bars 17, 18. At each pivot point, the linkage means is connected to a series of upstanding parallel expander bars 27 and at appropriate points there are downwardly depending nylon stilts 28 which support the linkage 24 on the work table 12.
In the initial position of the movable cross-bar 18, the linkage 24 is closed so that the expander bars 27 are close together as shown in Figs 3A and 4A. When the movable cross-bar 18 is moved away from the fixed cross-bar 17 by the chain drive 15, the linkage 24 opens to separate the expander bars 27 as shown in Figs 3B, 4B and 6.
In this instance, the work-piece 30 consists of a plurality of ribs 31 spaced apart by web portions 32 which define a repeating H-section pattern. The other extremities
OMPΪ of the ribs 31 have beads 33 which can be shaped to help retain the work-piece 30 on the expander bars 27. The work- piece 30 has formed therein an array of slots 34 which when the work-piece 30 is expanded become openings 35 as shown in Figs 1 and 4B.
As can be seen in Fig. 5 in the case of the fixed claw 20, the claws 20, 21 are slidably mounted on their cross¬ bars 17, 18. The cross-bar 17 has a rail 40 on which is mounted a carriage 41 that is locked thereto by locking bolt 42. The carriage 41 has a pivotal mounting 43 for the claw 20. At the opposite side of the carriage 41 there is a cylinder 22 mounted at an axis 44 which is arranged to raise and lower the jaw 45 of the claw 20 out of and in to engage with the rib 31 of the work-piece 30.
Appropriate control systems are provided to regulate the movement of the cross bar 18 and these include limit switches 50, 51 which are operated by abutments 52, 53 on the chain 15. A brake is associated with the chain drive to prevent over-run at the end of a stroke of the cross bar 18.
Various modifications may be made in details of design and construction without departing from the scope and ambit of the invention.
OMPI

Claims

- 6 -CLAIMS
1. A machine for expanding a pre-cut or slotted work-piece having a plurality of ribs spaced apart by web portions, said machine comprising a work table, expanding means mounted for movement across the work table and including expander bars adapted to engage selected ribs of the work¬ piece and means for expanding the expander bars from an initial position in which the expander bars are close enough together so that the work-piece can be located on the work table with the expander bars positioned between adjacent 0 ribs of the work-piece to a final position in which the expander bars have expanded the work-piece to a pre¬ determined extent.
2. A machine for expanding a work-piece comprising:
(i) a frame, (ii) a work table supported by the frame, (iii) a fixed cross-bar mounted on the frame adjacent a longitudinal extent of the work table,
(iv) a fixed claw mounted on the fixed cross-bar adapted to engage and hold one longitudinal extent of the work-piece, (v) a movable cross-bar mounted for transverse ove- 0 meπt across the work table,
(vi) a movable claw mounted on the movable cross-bar adapted to engage and hold the other longitudinal extent of the work-piece, (vii) linkage means connected between the fixed and 5 movable cross-bars and supporting a plurality of expander bars adapted to engage the work-piece at pre-selected positions thereacross, and, (viii) drive means for moving the movable cross-bar away from the fixed cross-bar so as to cause the 0 linkage means to expand whereby the expander bars expand the work-piece.
3. A machine according to claim two having a plurality of fixed and moving claws which are arranged opposite one another so that the respective edges of the work-piece are gripped at pre-determined aligned locations.
4. A machine according to any one of the preceding claims wherein the linkage means may be supported on the work table by nylon stilts located beneath the point of connection of each expander bar with the linkage means.
5. A machine according to claim three wherein the fixed and moving claws are slidable along their respective cross¬ bars and the drive means includes an endless chain drive to which the movable cross-bar is adjustably connected.
6. According to any one of the preceding claims wherein th linkage means is in the form of a series of interconnected pivotal levers which form a scissors set or lazy tongs.
EP19850900014 1983-12-05 1984-12-05 Expanding machine Withdrawn EP0163700A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2694/83 1983-12-05
AU269483 1983-12-05

Publications (1)

Publication Number Publication Date
EP0163700A1 true EP0163700A1 (en) 1985-12-11

Family

ID=3693186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850900014 Withdrawn EP0163700A1 (en) 1983-12-05 1984-12-05 Expanding machine

Country Status (2)

Country Link
EP (1) EP0163700A1 (en)
WO (1) WO1985002567A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242380B (en) * 1990-03-17 1994-06-29 Boal Uk Ltd Stretching apparatus
KR101113633B1 (en) 2003-08-06 2012-02-15 쉘 인터내셔날 리써취 마트샤피지 비.브이. Support for a tube bundle
CN106825101A (en) * 2017-03-16 2017-06-13 烟台胜闻斯国际贸易有限公司 Aluminium sheet is molded spreadboard
CN107999647B (en) * 2017-11-30 2024-02-27 珠海格力智能装备有限公司 Expansion rod driving mechanism and pipe expander with same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797506A (en) * 1928-07-16 1931-03-24 Kalman Steel Company Inc Machine for the production of expanded metal
AU434936B2 (en) * 1970-07-16 1973-04-17 Jury + Spiers Proprietary Ltd. Method for producing expanded metal
AU453003B2 (en) * 1970-09-22 1974-09-19 Jury & Spiers Proprietary Limited Expanded metal structural member
AU469862B2 (en) * 1972-08-23 1976-02-26 Comalco (J.& S.) Pty. Ltd. Expanded mesh
AU475675B2 (en) * 1972-08-24 1975-02-06 Comalco (J.& S.) Pty. Ltd. Metal expanding machine
AU500092B2 (en) * 1975-10-20 1979-05-10 Ampliform Pty. Limited Mesh forming method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8502567A1 *

Also Published As

Publication number Publication date
WO1985002567A1 (en) 1985-06-20

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19851106

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WINKLER, ULRICH

Inventor name: WISE, FREDERICK, EDWARD