EP0429126B1 - Bundling apparatus - Google Patents
Bundling apparatus Download PDFInfo
- Publication number
- EP0429126B1 EP0429126B1 EP90202995A EP90202995A EP0429126B1 EP 0429126 B1 EP0429126 B1 EP 0429126B1 EP 90202995 A EP90202995 A EP 90202995A EP 90202995 A EP90202995 A EP 90202995A EP 0429126 B1 EP0429126 B1 EP 0429126B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loop
- arms
- articles
- zone
- bundling
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
- B65B27/10—Bundling rods, sticks, or like elongated objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/20—Means for compressing or compacting bundles prior to bundling
Definitions
- the invention relates to a bundling apparatus according to the preamble of claim 1 for clamping a plurality of elongate rod-shaped articles, for example steel bars, into a bundle.
- the binding wire fulfils the function of clamping means which has to be permanently capable of matching the shape of the bundle being formed.
- the wire must be flexible. After the bundle is formed, a know is made in the binding wire. The knot should not loosen during further handling of the bundle. For this purpose, the wire must be stiff and permanently deformable. The two conflicting demands on the binding wire require a compromise so that in practice bundles are irregularly formed or not held tightly.
- DE-A-1511826 describes a bundling apparatus in which a U-shaped swinging arm pushes a chain, which is initially in a loop below steel bars collected in a trough. The pushing end of the arm pushes the chain over the bars, thereby picking up the bars into a bundle.
- the aim is to reduce friction, to achieve good roundness of the bundle.
- GB-A-1574349 shows a bundling apparatus in which two C-shaped arms swing to pull respective chains across the top of a bundle of bars, to tighten the bundle.
- GB-A-1358472 shows a device with two swinging arms which push two sides of a loop of a sling towards each other to form a bundle. The bundle is then tightened by shortening the loop by pulling the ends of the loop.
- None of the prior art proposals were suited for collecting rods from a wide span into a bundle, as may be required for example when steel bars arrive at the bundling apparatus on a roller table. lt is desired to avoid the step of first collecting the bars in a trough. A subsidiary problem is to avoid fouling of the moving parts of the bundling apparatus by dirt and scale from the bars.
- the elongate flexible element e.g. a chain
- the elongate flexible element is fixed at both ends to a frame of the apparatus.
- the invention is based firstly on the concept notion that the gripping of elongate articles into a bundle, and the binding together of a bundle is done preferably by two separate apparatuses.
- the system of frame, two swinging arm and flexible element forms a closed circle which may be changed in shape, and which essentially describes a flat plane, the gripping plane.
- Elongate articles such as concrete-reinforcing bars may be fed through the closed circle transversely to the gripping plane.
- the arms By rotating the arms suitably, the zone encompassed by the closed circle is reduced and the articles gripped into a bundle.
- An advantage of the bundling apparatus in accordance with the invention is that it may be composed of a small number of individually simple elements.
- the bundling apparatus may comprise only a small number of moving parts and so be suitable for use in industrial surroundings. Moreover, movement of the moving parts is simple, so that the mechanization of the bundling apparatus is equally simple.
- the bundling apparatus is suitable for operating with a binding machine which turns binding wire around the gripped bundle and forms a knot. Because the bundling apparatus ensures the gripping of the elongate articles into a bundle, the binding machine is relieved both mechanically and in terms of time.
- the crossing of the two swinging arms over the bundling zone enables the apparatus to pick up the articles from a wide zone.
- the invention is particularly suitable for collecting and bundling articles lying on a flat surface, such as a conveyor table.
- the swinging axes or common axis of the swinging arms are above the bundling zone, e.g. directly above a table over which the articles to be bundled collect. This avoids the risk of contamination of the rotating mechanism by dirt and scale from the bundled articles, and gives good accessibility for maintenance.
- the flexible element can assume a wide, free catenary shape for collection of articles over a wide zone. The conveyor of the articles to be bundled is kept largely separate from the bundling apparatus.
- the frame, first and second swinging arms, and gripping element describe a closed circle in a gripping plane.
- the elongate articles may be fed into the bundling apparatus transversely to this gripping plane.
- the feed-through size of the closed circle, i.e. the bundling zone, where the elongate articles are fed through is inadequate.
- At least one of the swinging arms is provided with a guide for pushing the flexible gripping element, from inside the loop, at least when the swinging arms are at their open position.
- the swinging arms at least between their pivot axes and the pushing members which contact the elongate flexible element, are straight, which simplifies their production.
- Fig. 1 shows a bundling apparatus 1 which comprises a frame or portal or grate shape2, a first swinging tensioning arm 3 and a second swingable tensioning arm 4.
- One end of each of the tensioning arms 3 and 4 is connected to a support 6 of the frame 2 so that it is free to rotate around an axis 5which is common for the two arms 3,4.
- a piston-cylinder unit 7,8 Between the frame 2 and each tensioning arm 3,4 there is a piston-cylinder unit 7,8. Both piston-cylinder units 7,8 are double-action.
- the operating elements of suitable piston-cylinder units are generally known and are not further illustrated.
- the outer end of the tensioning arm 3 is provided with a guide wheel 9; the outer end of the tensioning arm 4 is provided with a guide wheel 10.
- Branch arms 14,15 carry further guide wheels below the guide wheels 9,10.
- An elongate flexible gripping element, in the form of a link-chain 11, is attached at its two ends to supports 12 and 13 respectively of frame 6.
- the link-chain 11 passes over the guide wheels 9,10 and 14,15.
- the link chain 11 has the tendency to hang freely in a loop according to a catenary shape.
- the guide wheels 9.10 push the chain 11 inwardly from outside the loop.
- the two guide arms 14 and 15 press the link-chain 11 under the guide wheels 9 and 10 outwards, so that the zone described by elements 6, 3, 14, 11, 15 and 4 at the position of a roller 16 supporting the articles to be bundled is enlarged.
- Each of the guide arms 14 and 15 comprises a rod-shaped element that is provided on the side facing away from the tensioning arm by a slider over which the link-chain may slide.
- the roller 16 is a roller of a feed conveyor for part bundles 20, 21, 22 and 23.
- Each of the part bundles 20, 21, 22 and 23 is in itself a bundle of, for example, reinforced concrete rods.
- the four part bundles must then be bundled together into a main bundle 25 which is shown in Fig. 2.
- the pistons of the two piston-cylinder units 7,8 are extended out of the cylinders, so that the two tensioning arms 3 and 4 rotate around axis 5, crossing each other as seen in Figs. 1 and 2.
- both wheels 9.10 move substantially the whole width of the conveyor roller 16.
- the two guide wheels 9 and 10 move the link-chain 11 and tighten the loop of the chain 11 around the part bundles 20, 21, 22 and 23.
- the part bundles are bundled together into a newly formed main bundle 25.
- a desired gripping force on bundle 25 is achieved by extending the pistons of the piston cylinder combination out to a selected position.
- the pistons After binding wire has been placed around main bindle 25 in a manner of itself well-known, the pistons are retracted into the cylinders whereby the bundling apparatus returns into the position of rest indicated in Fig. 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Package Frames And Binding Bands (AREA)
- Executing Machine-Instructions (AREA)
- Confectionery (AREA)
- Jellies, Jams, And Syrups (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Clamps And Clips (AREA)
Abstract
Description
- The invention relates to a bundling apparatus according to the preamble of
claim 1 for clamping a plurality of elongate rod-shaped articles, for example steel bars, into a bundle. - Such bundling apparatus is known from GB-A-1,358,472.
- It is a known practice to bind together into a bundle elongate objects such as concrete-reinforcing bars. In this practice, wire is passed manually or mechanically around a number of bars, the binding wire is then tightened and a knot is made in the binding wire as tightly as possible thus formed so that the bundle holds together.
- When it is tightened, the binding wire fulfils the function of clamping means which has to be permanently capable of matching the shape of the bundle being formed. For this purpose, the wire must be flexible. After the bundle is formed, a know is made in the binding wire. The knot should not loosen during further handling of the bundle. For this purpose, the wire must be stiff and permanently deformable. The two conflicting demands on the binding wire require a compromise so that in practice bundles are irregularly formed or not held tightly.
- DE-A-1511826 describes a bundling apparatus in which a U-shaped swinging arm pushes a chain, which is initially in a loop below steel bars collected in a trough. The pushing end of the arm pushes the chain over the bars, thereby picking up the bars into a bundle. The aim is to reduce friction, to achieve good roundness of the bundle.
- GB-A-1574349 shows a bundling apparatus in which two C-shaped arms swing to pull respective chains across the top of a bundle of bars, to tighten the bundle.
- GB-A-1358472 shows a device with two swinging arms which push two sides of a loop of a sling towards each other to form a bundle. The bundle is then tightened by shortening the loop by pulling the ends of the loop.
- None of the prior art proposals were suited for collecting rods from a wide span into a bundle, as may be required for example when steel bars arrive at the bundling apparatus on a roller table. lt is desired to avoid the step of first collecting the bars in a trough. A subsidiary problem is to avoid fouling of the moving parts of the bundling apparatus by dirt and scale from the bars.
- It is an object of the invention to provide a bundling apparatus which can pick up elongate articles over a relatively wide span, and from them into a bundle.
- According to the invention there is provided a bundling apparatus according to
claim 1. - Preferably the elongate flexible element, e.g. a chain, is fixed at both ends to a frame of the apparatus.
- The invention is based firstly on the concept notion that the gripping of elongate articles into a bundle, and the binding together of a bundle is done preferably by two separate apparatuses.
- The system of frame, two swinging arm and flexible element forms a closed circle which may be changed in shape, and which essentially describes a flat plane, the gripping plane. Elongate articles, such as concrete-reinforcing bars may be fed through the closed circle transversely to the gripping plane. By rotating the arms suitably, the zone encompassed by the closed circle is reduced and the articles gripped into a bundle.
- An advantage of the bundling apparatus in accordance with the invention is that it may be composed of a small number of individually simple elements.
- Another advantage is that the bundling apparatus may comprise only a small number of moving parts and so be suitable for use in industrial surroundings. Moreover, movement of the moving parts is simple, so that the mechanization of the bundling apparatus is equally simple. The bundling apparatus is suitable for operating with a binding machine which turns binding wire around the gripped bundle and forms a knot. Because the bundling apparatus ensures the gripping of the elongate articles into a bundle, the binding machine is relieved both mechanically and in terms of time.
- The crossing of the two swinging arms over the bundling zone enables the apparatus to pick up the articles from a wide zone. Thus the invention is particularly suitable for collecting and bundling articles lying on a flat surface, such as a conveyor table.
- Reduction of the necessary rotation of the swinging arms is achieved in a preferred embodiment of the bundling apparatus of the invention which the two arms rotate around the same axis. This embodiment is also structurally simple.
- In a particularly preferred embodiment, the swinging axes or common axis of the swinging arms are above the bundling zone, e.g. directly above a table over which the articles to be bundled collect. This avoids the risk of contamination of the rotating mechanism by dirt and scale from the bundled articles, and gives good accessibility for maintenance. The flexible element can assume a wide, free catenary shape for collection of articles over a wide zone. The conveyor of the articles to be bundled is kept largely separate from the bundling apparatus.
- As described above, the frame, first and second swinging arms, and gripping element describe a closed circle in a gripping plane. The elongate articles may be fed into the bundling apparatus transversely to this gripping plane. For some applications, when the bundling apparatus is in a position of rest, the feed-through size of the closed circle, i.e. the bundling zone, where the elongate articles are fed through is inadequate.
- In order to enlarge the width of the bundling zone, preferably at least one of the swinging arms is provided with a guide for pushing the flexible gripping element, from inside the loop, at least when the swinging arms are at their open position.
- Preferably the swinging arms, at least between their pivot axes and the pushing members which contact the elongate flexible element, are straight, which simplifies their production.
- The invention will now be illustrated in the following by way of non-limitative example with reference to the drawing. In the drawing:-
- Fig. 1 is a schematic representation of a bundling apparatus in accordance with the invention in its initial position of rest, and;
- Fig. 2 is a schematic representation of the bundling apparatus of Fig. 1 in a position in which rod-shaped articles are gripped in a bundle.
- The same reference numbers correspond to the same elements in both figures.
- Fig. 1 shows a
bundling apparatus 1 which comprises a frame or portal or grate shape2, a first swingingtensioning arm 3 and a second swingable tensioning arm 4. One end of each of thetensioning arms 3 and 4 is connected to asupport 6 of theframe 2 so that it is free to rotate around an axis 5which is common for the twoarms 3,4. Between theframe 2 and eachtensioning arm 3,4 there is a piston-cylinder unit cylinder units - The outer end of the
tensioning arm 3 is provided with aguide wheel 9; the outer end of the tensioning arm 4 is provided with aguide wheel 10.Branch arms guide wheels chain 11, is attached at its two ends to supports 12 and 13 respectively offrame 6. The link-chain 11 passes over theguide wheels link chain 11 has the tendency to hang freely in a loop according to a catenary shape. The guide wheels 9.10 push thechain 11 inwardly from outside the loop. The twoguide arms chain 11 under theguide wheels elements roller 16 supporting the articles to be bundled is enlarged. Each of theguide arms - The
roller 16 is a roller of a feed conveyor forpart bundles part bundles main bundle 25 which is shown in Fig. 2. - In order to form the
main bundle 25, the pistons of the two piston-cylinder units arms 3 and 4 rotate aroundaxis 5, crossing each other as seen in Figs. 1 and 2. Thus both wheels 9.10 move substantially the whole width of theconveyor roller 16. The twoguide wheels chain 11 and tighten the loop of thechain 11 around the part bundles 20, 21, 22 and 23. By further extending the pistons, the part bundles are bundled together into a newly formedmain bundle 25. A desired gripping force onbundle 25 is achieved by extending the pistons of the piston cylinder combination out to a selected position. After binding wire has been placed aroundmain bindle 25 in a manner of itself well-known, the pistons are retracted into the cylinders whereby the bundling apparatus returns into the position of rest indicated in Fig. 1.
Claims (6)
- A bundling apparatus for clamping a plurality of elongate rod-shaped articles (20-23) into a bundle (25), having an elongate flexible clamping element (11) arranged so as to form a loop at least partly surrounding a zone into which said articles are to be brought for bundling, a first swingable tensioning arm (3) having a first contact member (9) for engaging said clamping element from outside said loop, said first arm being swingable about a first axis (5) so that said first contact member (9) follows a first path and moves above said zone while pushing said clamping element (11) in a manner which tightens said loop, around the articles to be bundled and having a second swingable tensioning arm (4) having a second contact member (10) for engaging said clamping element (11) from outside said loop said second arm (4) being likewise swingable about a second axis (5) so that said second contact member (10) follows a second path and moves above said zone while pushing said clamping element (11) in a manner which tightens said loop around the articles to be bundled characterized in that at least one of the first axis and the second axis is positioned above the respective path and at the side of the respective path remote from the zone and in that the first and second arms (3,4) are able to cross during this swinging movement to effect tightening of said loop.
- A bundling apparatus according to claim 1 having a frame (2), said clamping element (11) being fixed at its two ends to said frame.
- A bundling apparatus according to claim 1 or claim 2 wherein said first and second arms (3,4) are swingable about a common axis (5).
- A bundling apparatus according to any one of claims 1 to 3 wherein at least one of said first and second arms (3,4) has a second contact member (14,15) for engaging said clamping element (11) from inside said loop, thereby to increase the width of said loop prior to the tightening of the loop.
- A bundling apparatus according to any one of claims 1 to 4 wherein said axes (5) of swinging of said first and second arms are located at a level above said zone into which said articles are brought for bundling.
- A bundling apparatus according to any one of claims 1 to 5 wherein at least one of said first and second arms (3,4) is straight.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8902865A NL8902865A (en) | 1989-11-21 | 1989-11-21 | BUNDLE DEVICE. |
NL8902865 | 1989-11-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0429126A1 EP0429126A1 (en) | 1991-05-29 |
EP0429126B1 true EP0429126B1 (en) | 1994-05-18 |
Family
ID=19855657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90202995A Expired - Lifetime EP0429126B1 (en) | 1989-11-21 | 1990-11-13 | Bundling apparatus |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0429126B1 (en) |
JP (1) | JPH03212319A (en) |
AT (1) | ATE105804T1 (en) |
CA (1) | CA2030273A1 (en) |
DE (1) | DE69009009T2 (en) |
ES (1) | ES2052164T3 (en) |
FI (1) | FI905728A (en) |
NL (1) | NL8902865A (en) |
NO (1) | NO905020L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3007686B1 (en) * | 2013-06-28 | 2016-02-26 | Gerard Grimberg | BRANCHING PRESS |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1511826A1 (en) * | 1966-07-08 | 1969-11-27 | Schwermaschb Kom Ernst Thaelma | Packing device for rod-shaped rolling stock |
GB1358472A (en) * | 1972-02-04 | 1974-07-03 | Norbergs Mekaniska Verkstad Ab | Method and apparatus for bundling rod beam or tube lengths |
CA1006882A (en) * | 1973-03-30 | 1977-03-15 | Morgan Construction Company | Bundle forming apparatus |
US3871288A (en) * | 1973-11-23 | 1975-03-18 | Automation Development Corp | Automatic bar handling system |
JPS5453099A (en) * | 1977-10-03 | 1979-04-26 | Kawasaki Steel Corp | Method to band edge plates |
IT1087081B (en) * | 1977-10-19 | 1985-05-31 | Elektrostalsky Z Tyazhelogo Ma | DEVICE TO FORM ROUND PACKS OF ARTICLES IN THE FORM OF A BAR |
JPS5579215A (en) * | 1978-12-01 | 1980-06-14 | Takigawa Kogyo Kk | Method of bundling |
-
1989
- 1989-11-21 NL NL8902865A patent/NL8902865A/en not_active Application Discontinuation
-
1990
- 1990-11-13 EP EP90202995A patent/EP0429126B1/en not_active Expired - Lifetime
- 1990-11-13 DE DE69009009T patent/DE69009009T2/en not_active Expired - Fee Related
- 1990-11-13 ES ES90202995T patent/ES2052164T3/en not_active Expired - Lifetime
- 1990-11-13 AT AT90202995T patent/ATE105804T1/en not_active IP Right Cessation
- 1990-11-19 CA CA002030273A patent/CA2030273A1/en not_active Abandoned
- 1990-11-20 FI FI905728A patent/FI905728A/en not_active IP Right Cessation
- 1990-11-20 NO NO90905020A patent/NO905020L/en unknown
- 1990-11-21 JP JP2314485A patent/JPH03212319A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0429126A1 (en) | 1991-05-29 |
CA2030273A1 (en) | 1991-05-22 |
JPH03212319A (en) | 1991-09-17 |
ATE105804T1 (en) | 1994-06-15 |
FI905728A0 (en) | 1990-11-20 |
NL8902865A (en) | 1991-06-17 |
ES2052164T3 (en) | 1994-07-01 |
NO905020L (en) | 1991-05-22 |
DE69009009D1 (en) | 1994-06-23 |
NO905020D0 (en) | 1990-11-20 |
DE69009009T2 (en) | 1994-09-22 |
FI905728A (en) | 1991-05-22 |
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