DE4211767C1 - Reinforced plastics hollow support strut - has inner metal sleeve reinforcing with spaces at each end for stress relief on moulding. - Google Patents

Reinforced plastics hollow support strut - has inner metal sleeve reinforcing with spaces at each end for stress relief on moulding.

Info

Publication number
DE4211767C1
DE4211767C1 DE19924211767 DE4211767A DE4211767C1 DE 4211767 C1 DE4211767 C1 DE 4211767C1 DE 19924211767 DE19924211767 DE 19924211767 DE 4211767 A DE4211767 A DE 4211767A DE 4211767 C1 DE4211767 C1 DE 4211767C1
Authority
DE
Germany
Prior art keywords
reinforcement
plastic
cavity
spaces
strut
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 - Fee Related
Application number
DE19924211767
Other languages
German (de)
Inventor
Giuseppe Attilo
Manfred Schibalsky
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.)
Dr Spiess Kunststoff Recycling GmbH and Co
Original Assignee
Dr Spiess Kunststoff Recycling GmbH and Co
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
Priority claimed from DE19914124030 external-priority patent/DE4124030C1/en
Application filed by Dr Spiess Kunststoff Recycling GmbH and Co filed Critical Dr Spiess Kunststoff Recycling GmbH and Co
Priority to DE19924211767 priority Critical patent/DE4211767C1/en
Application granted granted Critical
Publication of DE4211767C1 publication Critical patent/DE4211767C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/005—Compensating volume or shape change during moulding, in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/26—Non-fibrous reinforcements only
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The hollow profile plastics strut (1) has an inner, hollow metal sleeve (2) bonded to the plastics. The sleeve stops short of the ends of the strut, with hollow spaces (14) each end to allow the sleeve to expand thermally. The hollow ends are sealed with press-fit caps (19). The sleeves are moulded into the struts, with the hollow spaces preventing stresses. The end caps fit into widened recesses in the ends of the strut. The plastics material is made from recycled plastics. USE/ADVANTAGE - Strong, lightweight strut, low cost construction.

Description

Gegenstand des Hauptpatents ist ein langgestreckter auf Biegung belastbarer Gegenstand, wie z. B. Bankbohle, Träger etc., aus Recycling-Kunststoff, insbesondere aus stark verunreinigtem Recycling-Kunststoff, mit einer allseitig im Kunststoff eingebetteten Armierung, wobei mindestens eine Kompensationszone zum Abbau auftretender Schrumpfspannungen zwischen Armierung und Kunststoff vorgesehen ist, wobei die Armierung aus mindestens zwei teleskopartig ineinanderschiebbaren Profilen besteht.The subject of the main patent is an elongated one Bending resilient object, such as B. bench planks, beams etc., from recycled plastic, especially from strong contaminated recycled plastic, with one on all sides reinforcement embedded in plastic, at least a compensation zone for reducing shrinkage stresses provided between reinforcement and plastic is, the reinforcement from at least two telescopically nested profiles.

Mit einer derartigen Ausführung eines langgestreckten auf Biegung belastbaren Gegenstandes wird schon ein Teil der Schrumpfspannungen des Recycling-Kunststoffes abgebaut.With such an embodiment of an elongated on bending resilient object already becomes a part the shrinkage stresses of the recycled plastic are reduced.

Die Erfindung bezweckt, das Verstellen von langgestreckten Gegenständen aus Recycling-Kunststoff so zu verbessern, daß die mit einer stabilen Armierung ausgestatteten Gegenstände durch die materialbedingten unterschiedlichen Schrumpfspannungen beim Abkühlen nicht unbrauchbar bzw. zerstört werden. The invention aims to adjust elongated To improve items made from recycled plastic so that those equipped with stable reinforcement Objects by the material-related different Shrinkage stresses not unusable when cooling or be destroyed.  

Das wird gemäß der Erfindung dadurch gelöst, daßThis is solved according to the invention in that

  • a) die Kunststoffummantelung an beiden Enden des Gegenstandes sich über die Armierung hinaus erstreckt,a) the plastic sheathing at both ends of the object extends beyond the reinforcement,
  • b) die Kompensationszone aus einem an den Enden der Armierung sich anschließenden, von der Kunststoffummantelung gebildeten Hohlraum besteht undb) the compensation zone from one at the ends of the reinforcement subsequent, from the plastic jacket formed cavity and
  • c) der Hohlraum im Querschnitt gleich oder größer ist als der Querschnitt der Armierung.c) the cavity is the same or larger in cross section than the cross section of the reinforcement.

Die Armierung reicht also nicht bis an das jeweilige Ende des Gegenstandes. Die Ummantelung steht darüber hinaus. In diesen kurzen überstehenden Enden erübrigt sich eine Armierung. Die sich an den Enden der Armierung anschließende Kompensationszone, die aus einem von der Kunststoffummantelung gebildeten Hohlraum besteht, dient zur Aufnahme einer eventuell vorstehenden Armierung, wenn sich nämlich beim Abkühlungsprozeß und gleichzeitigem Schrumpfen die Kunststoffummantelung verkürzt. Die vorstehende, in den Hohlraum hineinragende Armierung stört keineswegs, weil die beiderseitigen offenen Enden des Gegenstandes anschließend verschlossen werden. Bei der Ausformung des Hohlraumes ist selbstverständlich zu beachten, daß dieser im Querschnitt gleich oder größer ist als der Querschnitt der Armierung. Nur dann kann sich die Armierung ungehindert in den Hohlraum hineinschieben, soweit dies eben erforderlich ist.The reinforcement does not reach the end of the object. The sheath is beyond. In these short protruding ends no reinforcement is required. The compensation zone at the ends of the reinforcement, the one from the plastic jacket formed cavity is used to accommodate  a possibly protruding reinforcement, if namely during the cooling process and at the same time Shrinking the plastic jacket shortens. The above, reinforcement protruding into the cavity disturbs by no means because the mutually open ends of the Subsequently be closed. In the The shape of the cavity is of course to be observed, that this is the same or larger in cross section than the cross section of the reinforcement. Only then can push the reinforcement freely into the cavity, as far as this is necessary.

Nach einem weiteren Merkmal der Erfindung kann der an den Enden des Gegenstandes offene Hohlraum der Kunststoffummantelung durch je eine in diesen einsteckbare Abschlußkappe abgeschlossen sein. Dadurch kann keine Feuchtigkeit in das Innere des fertigen Gegenstandes eindringen und die Armierung ist vor Korrosion geschützt.According to a further feature of the invention, the the ends of the object open cavity of the plastic jacket by inserting one into each End cap must be completed. No one can Moisture inside the finished item penetrate and the reinforcement is protected against corrosion.

Schließlich kann der Hohlraum zur Aufnahme der Abschlußkappe in dem dafür vorgesehenen Bereich im Querschnitt erweitert sein. Diese Erweiterung dient als Anschlag für die Abschlußkappe. Dadurch kann nach außen hin stets ein sauberer gleichmäßiger Abschluß sichergestellt werden.Finally, the cavity for receiving the end cap in the area provided for this purpose in cross section be expanded. This extension serves as a stop for the end cap. This can always be done to the outside a clean, even finish can be ensured.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles soll die Erfindung näher erläutert werden. Es zeigtBased on an embodiment shown in the drawing the invention will be explained in more detail. It shows

Fig. 1 die Enden eines langgestreckten Gegenstandes im Schnitt und Fig. 1 shows the ends of an elongated object in section and

Fig. 2 eine Draufsicht auf ein Ende des langgestreckten Gegenstandes. Fig. 2 is a plan view of one end of the elongate object.

Der in der Fig. 1 dargestellte langgestreckte Gegenstand 1 besteht aus einer Armierung 2, die mit Kunststoff unmmantelt ist. Die Armierung 2 ist in der Länge so gehalten, daß die Kunststoffummantelung um ein vorbestimmtes Stück an den Enden 5, 6 übersteht. Im Anschluß an die Armierung 2 ist ein Hohlraum 14 in der Kunststoffummantelung ausgeformt. Dieser Hohlraum 14 ist im Querschnitt gleich oder größer als der Querschnitt der Armierung 2. Der Hohlraum 14 dient dazu, daß beim Abkühlen des Gegenstandes 1 und einsetzendem Schrumpfungsprozeß die Armierung 2 denselben nicht stört, so daß sich die im größeren Umfang schrumpfende Kunststoffummantelung, nur der Reibung unterworfen, ungehindert über die Armierung 2 hinwegschieben kann. Die Enden der Armierung 2 können also während des Schrumpfungsprozesses in den jeweiligen Hohlraum 14 eindringen.The illustrated in Fig. 1 elongate article 1 consists of a reinforcement 2, which is unmmantelt with plastic. The length of the reinforcement 2 is such that the plastic sheath protrudes by a predetermined amount at the ends 5, 6 . Following the reinforcement 2 , a cavity 14 is formed in the plastic casing. In cross section, this cavity 14 is equal to or larger than the cross section of the reinforcement 2 . The cavity 14 is used so that when the object 1 cools down and the shrinking process begins, the reinforcement 2 does not disturb the same, so that the plastic casing, which is shrinking to a greater extent, is only subjected to friction and can slide freely over the reinforcement 2 . The ends of the reinforcement 2 can thus penetrate into the respective cavity 14 during the shrinking process.

Die Armierung 2 kann aus einem Hohlprofil, insbesondere aus einem Vierkantrohr bestehen. Dies hat den Vorteil, daß keine Kunststoffmasse in die lichte Weite des Hohlprofiles eindringen kann, wodurch der Schrumpfungsprozeß, ohne irgendwelche Spannungen in der Ummantelung zu verursachen, abläuft.The reinforcement 2 can consist of a hollow profile, in particular a square tube. This has the advantage that no plastic mass can penetrate into the inside width of the hollow profile, as a result of which the shrinking process takes place without causing any tension in the casing.

An den Enden 5, 6 des Gegenstandes 1 kann der Hohlraum 14 zu einem Anschlag für die Abschlußkappe 19 ausgeformt sein. Dadurch wird stets ein gleicher Sitz der Abschlußkappe 19 im Hohlraum 14 ermöglicht.At the ends 5, 6 of the object 1 , the cavity 14 can be formed into a stop for the end cap 19 . As a result, an identical fit of the end cap 19 in the cavity 14 is always made possible.

In der Fig. 2 ist ein unabgedecktes Ende 5, 6 dargestellt. Die Außenkanten des Gegenstandes 1 können abgerundet sein.In FIG. 2 is a unabgedecktes end 5, 6. The outer edges of the object 1 can be rounded.

Claims (3)

1. Langgestreckter auf Biegung belastbarer Gegenstand, wie z. B. Bankbohle, Träger etc., aus Recycling- Kunststoff, insbesondere aus stark verunreinigtem Recycling-Kunststoff, mit einer allseitig im Kunststoff eingebetteten Armierung, wobei mindestens eine Kompensationszone zum Abbau auftretender Schrumpfspannungen zwischen Armierung und Kunststoff vorgesehen ist, wobei die Armierung aus mindestens zwei teleskopartig ineinanderschiebbaren Profilteilen besteht, dadurch gekennzeichnet, daß
  • a) die Kunststoffummantelung an beiden Enden (5, 6) des Gegenstandes (1) sich über die Armierung (2) hinaus erstreckt,
  • b) die Kompensationszone aus einem an den Enden (5, 6) der Armierung (2) sich anschließenden, von der Kunststoffummantelung gebildeten Hohlraum (14) besteht und
  • c) der Hohlraum (14) im Querschnitt gleich oder größer ist als der Querschnitt der Armierung (2).
1. Elongated object resilient to bending, such as. B. bench planks, beams etc., made from recycled plastic, in particular from highly contaminated recycled plastic, with reinforcement embedded on all sides in the plastic, at least one compensation zone being provided for reducing shrinkage stresses occurring between the reinforcement and plastic, the reinforcement consisting of at least two consists telescopically telescopic profile parts, characterized in that
  • a) the plastic coating at both ends ( 5, 6 ) of the object ( 1 ) extends beyond the reinforcement ( 2 ),
  • b) the compensation zone consists of a cavity ( 14 ) adjoining the ends ( 5, 6 ) of the reinforcement ( 2 ) and formed by the plastic sheathing and
  • c) the cavity ( 14 ) in cross section is equal to or larger than the cross section of the reinforcement ( 2 ).
2. Langgestreckter Gegenstand nach Anspruch 1, dadurch gekennzeichnet, daß der an den Enden (5, 6) des Gegenstandes (1) offene Hohlraum (14) der Kunststoffummantelung durch je eine in diesen einsteckbare Abschlußkappe (19) abgeschlossen ist.2. Elongated object according to claim 1, characterized in that the at the ends ( 5, 6 ) of the object ( 1 ) open cavity ( 14 ) of the plastic jacket is each closed by an insertable into this end cap ( 19 ). 3. Langgestreckter Gegenstand nach Anspruch 2, dadurch gekennzeichnet, daß der Hohlraum (14) zur Aufnahme der Abschlußkappe (19) in dem dafür vorgesehenen Bereich im Querschnitt erweitert ist.3. Elongated object according to claim 2, characterized in that the cavity ( 14 ) for receiving the end cap ( 19 ) is enlarged in cross section in the area provided.
DE19924211767 1991-07-19 1992-04-08 Reinforced plastics hollow support strut - has inner metal sleeve reinforcing with spaces at each end for stress relief on moulding. Expired - Fee Related DE4211767C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924211767 DE4211767C1 (en) 1991-07-19 1992-04-08 Reinforced plastics hollow support strut - has inner metal sleeve reinforcing with spaces at each end for stress relief on moulding.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914124030 DE4124030C1 (en) 1991-07-19 1991-07-19 Longitudinally stretched component e.g. plank - made of recycling plastic, with embedded reinforcement and zone to compensate for shrinkage
DE19924211767 DE4211767C1 (en) 1991-07-19 1992-04-08 Reinforced plastics hollow support strut - has inner metal sleeve reinforcing with spaces at each end for stress relief on moulding.

Publications (1)

Publication Number Publication Date
DE4211767C1 true DE4211767C1 (en) 1993-12-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924211767 Expired - Fee Related DE4211767C1 (en) 1991-07-19 1992-04-08 Reinforced plastics hollow support strut - has inner metal sleeve reinforcing with spaces at each end for stress relief on moulding.

Country Status (1)

Country Link
DE (1) DE4211767C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106545124A (en) * 2015-11-11 2017-03-29 陈菲 The building method of compression member and raising compression member compression bearing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840508C2 (en) * 1988-12-01 1991-07-18 Dr. Spiess Kunststoff-Recycling Gmbh & Co, 6719 Kleinkarlbach, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840508C2 (en) * 1988-12-01 1991-07-18 Dr. Spiess Kunststoff-Recycling Gmbh & Co, 6719 Kleinkarlbach, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106545124A (en) * 2015-11-11 2017-03-29 陈菲 The building method of compression member and raising compression member compression bearing
CN106545124B (en) * 2015-11-11 2019-02-12 陈菲 Compression member and the building method for improving compression member compression bearing

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