DE2733748A1 - Fitting cover and button to body of plastics barrel - by zonal heating and cooling, and compression to form bead with aid of template and using clamping ring - Google Patents
Fitting cover and button to body of plastics barrel - by zonal heating and cooling, and compression to form bead with aid of template and using clamping ringInfo
- Publication number
- DE2733748A1 DE2733748A1 DE19772733748 DE2733748A DE2733748A1 DE 2733748 A1 DE2733748 A1 DE 2733748A1 DE 19772733748 DE19772733748 DE 19772733748 DE 2733748 A DE2733748 A DE 2733748A DE 2733748 A1 DE2733748 A1 DE 2733748A1
- Authority
- DE
- Germany
- Prior art keywords
- barrel
- barrel body
- clamping ring
- aid
- template
- 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- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
- B29B13/024—Hollow bodies, e.g. tubes or profiles
- B29B13/025—Tube ends
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
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- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/22—Corrugating
- B29C53/30—Corrugating of tubes
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- 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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
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- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
- B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
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- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
- B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
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- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
- B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
- B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7154—Barrels, drums, tuns, vats
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
Abstract
Description
Kunststoff-Fässer werden üblicherweise durch tas Extrusions-Plastic barrels are usually made by extrusion
blasverfahren hergestellt. Bei diesem Verfahren wird eine Kunststoffschmelze zu einem Schlauch verformt, welcher in einer mehrteiligen Hohlform zu dem gewünschten Faß aufgeblasen wird. Füllöffnungen werden im selben Arbeitsgang angeformt. Deckel und Verschlußkappen werden separat gefertigt. Dieses Verfahren ist indessen maschinentechnisch aufwendig und nur bei großen Stückzahlen rentabel, da die Blas-Formen sehr teuer sind und für jede Faßgröße und -form eine besondere Blasform angefertigt werden muß. Außerdem muß die Extrudergröße dem Faßgewicht angepaßt sein, da der Mindestdurchsatz des Extruder dem Faßgewicht entsprechen sollte.blow molding manufactured. This process uses a plastic melt deformed into a tube, which in a multi-part hollow shape to the desired Barrel is inflated. Filling openings are formed in the same operation. lid and sealing caps are manufactured separately. However, this process is machine-based expensive and only profitable for large quantities, since the blow molds are very expensive and a special blow mold can be made for every barrel size and shape got to. In addition, the extruder size must be adapted to the barrel weight, as the minimum throughput of the extruder should correspond to the weight of the barrel.
Es wurde nun gefunden, daß man Kunststoff-Fässer in fast beliebiger Größe und auch in kleinen Stückzahlen herstellen kann, wenn man einen Faßkörper an beiden Enden auf bestimmte Weise mit je einer Sicke versieht und diese Sicke zum Befestigen eines Deckels mittels eines Spannringes verwendet.It has now been found that you can use plastic barrels in almost any Size and can also be produced in small numbers if you have a barrel body at both ends in a certain way provided with a bead and this bead used to fasten a lid by means of a clamping ring.
Gegenstand der Erfindung ist daher das im Anspruch genannte Verfahren.The subject of the invention is therefore the method mentioned in the claim.
Der für das erfindungsgemäße Verfahren zu verwendende Faßkörper besteht aus einem thermoplastischen Kunststoff. Als thermoplastische Kunststoffe kommen in Betracht Homo- und Copolymere des Vinylchlorids sowie deren Mischungen mit anderen Polymeren, Homo- und Copolymere von 1-Olefinen, z. B. Xthylen, Propylen, Buten-(1) sowie deren Mischungen mit anderen Polymeren, ferner schlagzähe Copolymere des Styrols sowie Homo- und Copolymere von Acrylsäure und Methacrylsäurederivaten. Vorzugsweise werden Homo- und Copolymere von 1-Olefinen verwendet, z. B. Hochdruck-Polyäthylen, Niederdruck-Polyäthylen und Polypropylen.The barrel body to be used for the method according to the invention consists made of a thermoplastic material. As thermoplastics come into consideration homo- and copolymers of vinyl chloride and their mixtures with others Polymers, homo- and copolymers of 1-olefins, e.g. B. ethylene, propylene, butene- (1) and their mixtures with other polymers, and also high-impact copolymers of styrene as well as homo- and copolymers of acrylic acid and methacrylic acid derivatives. Preferably homo- and copolymers of 1-olefins are used, e.g. B. high pressure polyethylene, Low pressure polyethylene and polypropylene.
Der Faßkörper kann eina beliebigen Querschnitt aufweisen, z. 13.The barrel body can have any cross-section, e.g. 13th
rund, rechteckig oder oval, ein runder Querschnitt wird jedoch bevorzugt. Er ist herstellbar durch Extrusion und Ablängen eines Rohres oder eines Profils oder durch Zusammenschweißen einer geeigneten Kunststofftafel. Die Wandstärke des Faßkörpers ist vom verwendeten Kunststoff und der vorgesehenen Faßgröße abhängig und beträgt 1 bis 4 mm, vorzugsweise 2 bis 3 m=.round, rectangular, or oval, but a round cross-section is preferred. It can be produced by extrusion and cutting to length of a pipe or profile or by welding together a suitable plastic board. the The wall thickness of the barrel body depends on the plastic used and the size of the barrel depends and is 1 to 4 mm, preferably 2 to 3 m =.
Der zu verwendende Boden bzw. Deckel besitzt rundum eine Ringnut, in welche der Rand des Faßkörpers eingebettet ist. Der Rand hat in dieser Nut etwas Spiel, um das Öffnen und Schließen des Fasses zu erleichtern. Außerhalb der Ringnut besitzt der Deckel einen rundumlaufenden Bördel, über welchen der Spannring greift. Die Form des Bodens bzw. Deckels entspricht dem vorgesehenen Querschnitt des Fasses. Die Herstellung des Bodens bzw. Deckels kann durch Tiefziehen erfolgen, jedoch ist die Spritzgußfertigung vorzuziehen, vor allem, wenn an den Stellen, wo der Faßboden erhöhtem Verschleiß ausgesetzt ist, mehr Kunststoffmaterial angesammelt sein muß. Derartige Deckel sind im Handel erhältlich. Obwohl Boden und Deckel des Fasses verschiedenartig geformt sein können auch der Boden auf andere Art am Faßkörper befestigt sein kann, z. B. durch Schweißen, sind Boden und Deckel vorzugsweise identisch und mit Spannringen befestigt.The base or cover to be used has an annular groove all around, in which the edge of the barrel body is embedded. The edge has something in this groove Game to make it easier to open and close the barrel. Outside the ring groove the lid has an all-round flange over which the clamping ring engages. The shape of the bottom or lid corresponds to the intended cross-section of the barrel. The bottom or cover can be produced by deep drawing, but is Injection molding is preferable, especially when in the places where the barrel bottom exposed to increased wear, more plastic material must be accumulated. Such covers are commercially available. Although the bottom and lid of the barrel are different can be shaped and the bottom can be attached to the barrel body in another way, z. B. by welding, the bottom and cover are preferably identical and with clamping rings attached.
Zur Durchführung des erfindungsgemäßen Verfahrens wird der FaB-körper in einer Ringzone bis in den Bereich der optimalen Warmformtemperatur erwärmt. Unter der optimalen Warmformtemperatur wird der Temperaturbereich verstanden und bei den meisten Warmformverfahren angestrebt, bei dem der Kunststoff den Verformungskräften nachgibt, aber noch genügend Kohäsion aufweist, um unter diesen Kräften nicht zu zerreißen. Dieser Bereich ist bei manchen thermoplastischen Kunststoffen weniger ausgeprägt Einige Kunststoffe zeigen oberhalb des Einfrierbereiches ein gummielastisches Verhalten oder beginnen, plastisch zu fließen; sie können einem Warmformverfahren der vorstehenden Art nicht unterworfen werden. Für die bevorzugt verwendeten 1-Olefin-Homo- und Copolymeren liegt die optimale Warmformungstemperatur im Bereich von 125 bis 1800C.To carry out the method according to the invention, the FaB body heated in a ring zone up to the range of the optimum hot forming temperature. Under the optimal thermoforming temperature is understood to be the temperature range and the Most thermoforming processes are aimed at, in which the plastic undergoes deformation forces yields, but still has enough cohesion not to under these forces tear. This range is less for some thermoplastics pronounced Some plastics show a rubbery elasticity above the freezing area Behave or begin to flow plastically; they can use a thermoforming process are not subject to the above type. For the 1-olefin homo- and copolymers, the optimum thermoforming temperature is in the range of 125 to 1800C.
Die Erwärmung kann mittels bekannter Einrichtungen durchgeführt werden, vorausgesetzt, daß nur eine ringförmige Zone rund um den Faßkörper erwärmt wird. Brauchbar sind Ileizbänder.The heating can be carried out by means of known devices will, provided that only an annular zone around the barrel body is heated. Ileizbands are useful.
Eine sehr einfache Methode der Herstellung einer ringförmigen verformbaren warmen Zone besteht darin, daß man den Faßkörper zunächst bis zu einer bestimmten Eintauchtiefe eo bis 140 mm, vorzugsweise 100 bis 120 mm)in ein Heizbad bringt, dort erweichen läßt und dann bis zu einer geringeren Tiefe (40 bis 70, vorzugsweise 50 bis 60 mm) in ein Kühlbad eintaucht. Das Heizbad enthält zweckmäßigerweise eine mit Wasser mischbare Heizflüssigkeit, wie z. B. ein Alkylenglykol oder Polyalkylenglykol, welche auf eine Temperatur von 125 bis 180 C, vorzugsweise auf 140 bis 1500C erhitzt wird. Das Kühlbad enthält der Einfachheit halber Wasser.A very simple method of making an annular deformable warm zone consists in the fact that the barrel body is first up to a certain Immersion depth eo up to 140 mm, preferably 100 to 120 mm) in a heating bath, there can be softened and then to a shallower depth (40 to 70, preferably 50 to 60 mm) is immersed in a cooling bath. The heating bath expediently contains a water-miscible heating fluid, such as B. an alkylene glycol or polyalkylene glycol, which is heated to a temperature of 125 to 180 C, preferably 140 to 1500C will. The cooling bath contains water for the sake of simplicity.
Die Breiten der erwärmten Zone und der kühlen Zone am Rand des Faßkörpers sind von der Größe des Bördels am Deckel und damit auch von der Größe der Sicke abhängig, da Bördel und Sicke sich in ihrer Größe entsprechen müssen, wenn ein dichter Versdiluß erreicht werden soll. Im allgemeinen istdie erwärmte Zone 50 bis 70 mm, vorzugsweise 50 bis 60 mm breit, ihr Abstand vom Rand des Faßkörpers (= kühle Zone) beträgt 40 bis 70 mm, vorzugsweise 50 bis 60 mm.The widths of the heated zone and the cool zone at the edge of the barrel body depend on the size of the flange on the lid and thus also on the size of the bead depending, since the flange and bead must correspond in size if a denser one Versdiluß is to be achieved. Generally the heated zone is 50 to 70 mm, preferably 50 to 60 mm wide, their distance from the edge of the barrel body (= cool zone) is 40 to 70 mm, preferably 50 to 60 mm.
Damit sich beim Stauchen das thermoplastische Material nur nach außen unter Bildung einer Sicke wölbt, wird in den Faßkörper eine Innenschablone, deren Abmessullgen dem inneren Querschnitt des Faßkörpers entsprechen, eingeführt. Diese Innenschablone kann eine Scheibe sein, die zur besseren Handhabung einen Griff erhält. Vorzugsweise wird jedoch ein Ring verwendet, welcher 60 bis 140 mm hoch und 3 bis 20 nun dick ist und an einer Stelle in axialer Richtung einen Schlitz aufweist. Die beiden Schenkel des Ringes liegen beim Einführen in den Faßkörper übereinander, so daß die vom Ring umschlossene Fläche kleiner als der Querschnitt des Faßkörpers ist, damit das Einführen erleichtert wird. In der vorgesehenen Position angelangt, wird der Ring gespreizt, so daß die beiden Schenkel gegeneinander stoßen und der Ring allseits an der Innenwand des Faß-* beim Beginn des StauChens körpers anliegt. Der Ring kann aus Holz, Kunststoff oder Metall bestehen. Vorzugsweise wird er aus einem Abschnitt eines Kunststoffrohres gefertigt.So that when upsetting the thermoplastic material is only outward arches to form a bead, an inner template is in the barrel body, whose Dimensions correspond to the inner cross-section of the barrel body, introduced. These The inner template can be a disc that is given a handle for better handling. Preferably, however, a ring is used which is 60 to 140 mm high and 3 to 20 is now thick and has a slot at one point in the axial direction. The two legs of the ring lie on top of each other when inserted into the barrel body, so that the area enclosed by the ring is smaller than the cross section of the barrel body to facilitate insertion. Arrived in the intended position, the ring is spread so that the two legs butt against each other and the Ring on all sides on the inside wall of the barrel * at the beginning of the stowage body is present. The ring can be made of wood, plastic or metal. Preferably will it is made from a section of plastic pipe.
Nachdem der Boden bzw. Deckel auf den Faßkörper aufgelegt und die Innenschablone eingelegt wurde, wird der Faßkörper zur Bildung der Sicke in axialer Richtung gestaucht. Dies geschieht zweckmäßigerweise in einer Preßvorrichtung, die hydraulisch, pneumatisch oder mechanisch betätigt werden kann. Es kommen hierfür infrage z. B. hydraulische Pressen oder Kniehebel- oder Exzenterpressen, für kleine Fässer auch einfache Drückeinrichtungen, welche von Hand betätigt werden können. Die Arbeitsrichtung dieser Vorrichtungen ist vorzugsweise vertikal, da dadurch Halte- und Zentriereinrichtungen für den Faßkörper entfallen können. Es ist ferner vorteilhaft, den Spannring im geöffneten Zustand mit einzulegen, um ihn nach Bildung der Sicke sofort anzulegen, so daß die Sicke unter Druck abkühlt.After the bottom or cover is placed on the barrel body and the Inside template was inserted, the barrel body to form the bead in the axial Direction compressed. This is conveniently done in a pressing device that can be operated hydraulically, pneumatically or mechanically. There come for this question z. B. hydraulic presses or toggle or eccentric presses, for small Barrels also have simple pushing devices that can be operated by hand. The working direction of these devices is preferably vertical, as it and centering devices for the barrel body can be dispensed with. It is also advantageous to insert the clamping ring in the open state, so that it can be removed after the bead has been formed put on immediately so that the bead cools down under pressure.
Der Spannring ist von üblicher Bauart. Der Querschnitt ist ein , dessen offene Seite nach innen zeigt. Eine Hebelmechanik sorgt dafür, daß der Ring fest zusammengezogen wird. Zusätzlich enthält der Ring Einrichtungen, die das unbeabsichtigte Öffnen verhindern können. Derartige Ringe sind marktüblich und im Handel erhältlich.The clamping ring is of the usual type. The cross section is one of whose open side facing inwards. A lever mechanism ensures that the ring is tight is contracted. In addition, the ring contains facilities that prevent the unintentional Can prevent opening. Such rings are customary on the market and are commercially available.
Das erfindungsgemäße Verfahren gestattet es, mit einem Mininum an Ausrüstung kleine Serien von verschiedener Größe, Form und Farbe preiswert herzustellen. In Ländern mit niedrigem Lohnniveau ist auch die Fertigung von großen Serien rationell.The inventive method allows with a minimum Equipment to manufacture small series of various sizes, shapes and colors inexpensively. In countries with low wages, the production of large series is also efficient.
In Figur 1 wird der Faßkörper (1) gezeigt mit der Ringzone (2), in welcher der Kunststoff die optimale Warmformtemperatur erreichen soll. Bis zum Rand des Faßkörpers (1) schließt sich eine kühle Zone (3) an.In Figure 1, the barrel body (1) is shown with the ring zone (2), in which the plastic should achieve the optimum thermoforming temperature. To the edge the barrel body (1) is followed by a cool zone (3).
Figur 2 zeigt, wie der Faßkörper (1) durch ein Heizband (4) erwärmt wird.Figure 2 shows how the barrel body (1) is heated by a heating band (4) will.
In Figur 3 wird der Faßkörper (1) in ein Heizbad (5) getaucht, so tief, wie der Breite der vorgesehenen Zonen (2) und (3) entspricht. Sodann wird er gemäß Figur 4 in ein Kühlbad (6) so tief eingetaucht, wie der vorgesehenen Zone (3) entspricht.In Figure 3, the barrel body (1) is immersed in a heating bath (5), see above deep, as corresponds to the width of the intended zones (2) and (3). Then will it is immersed in a cooling bath (6) as deep as the intended zone as shown in FIG (3) corresponds.
Aus Figur 5a und 5b sind vorteilhafte Gestaltungen der Innenschablone (7) zu erkennen. Der Querschnitt des Faßkörpers kar somit nicht nur rund, sondern auch rechteckig oder elliptisch sein.Advantageous designs of the inner template are shown in FIGS. 5a and 5b (7) to be recognized. The cross section of the barrel body is therefore not only round, but also be rectangular or elliptical.
Figur 6 zeigt einen Querschnitt durch den zu verwendenden Boden bzw. Deckel (8), welcher eine Ringnut (8a) und eine Bördel (8b) aufweist.Figure 6 shows a cross-section through the floor to be used or Lid (8) which has an annular groove (8a) and a flange (8b).
Figur 7 zeigt den Faßkörper (1), versehen mit einem Boden bzw.Figure 7 shows the barrel body (1), provided with a bottom or
Deckel (8) und einer Innenschablone (7) In der Preßvorrichtun (9) am Begiml des Stauchvorganges.Cover (8) and an inner template (7) in the pressing device (9) at the beginning of the upsetting process.
In Figur 8 wird der Faßkörper (1) nach dem Stauchvorgang gezeigt. An dem Körper hat sich eine Sicke (10) gebildet, an welcher der Boden bzw. Deckel (8) mittels des Spannringes (11) befestigt wird.In Figure 8, the barrel body (1) is shown after the upsetting process. A bead (10) has formed on the body, on which the base or cover (8) is attached by means of the clamping ring (11).
L e e r s e i t eL e r s e i t e
Claims (2)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772733748 DE2733748A1 (en) | 1977-07-27 | 1977-07-27 | Fitting cover and button to body of plastics barrel - by zonal heating and cooling, and compression to form bead with aid of template and using clamping ring |
IN799/CAL/78A IN148869B (en) | 1977-07-27 | 1978-07-20 | |
BR7804808A BR7804808A (en) | 1977-07-27 | 1978-07-26 | PROCESS FOR THE MANUFACTURE OF A PLASTIC KEG |
ZA00784237A ZA784237B (en) | 1977-07-27 | 1978-07-26 | Process for the manufacture of a plastics barrel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772733748 DE2733748A1 (en) | 1977-07-27 | 1977-07-27 | Fitting cover and button to body of plastics barrel - by zonal heating and cooling, and compression to form bead with aid of template and using clamping ring |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2733748A1 true DE2733748A1 (en) | 1979-02-15 |
Family
ID=6014888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772733748 Withdrawn DE2733748A1 (en) | 1977-07-27 | 1977-07-27 | Fitting cover and button to body of plastics barrel - by zonal heating and cooling, and compression to form bead with aid of template and using clamping ring |
Country Status (4)
Country | Link |
---|---|
BR (1) | BR7804808A (en) |
DE (1) | DE2733748A1 (en) |
IN (1) | IN148869B (en) |
ZA (1) | ZA784237B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004110727A1 (en) * | 2003-06-16 | 2004-12-23 | Oy Kwh Pipe Ab | Method and system for forming a reducer for pipes |
-
1977
- 1977-07-27 DE DE19772733748 patent/DE2733748A1/en not_active Withdrawn
-
1978
- 1978-07-20 IN IN799/CAL/78A patent/IN148869B/en unknown
- 1978-07-26 BR BR7804808A patent/BR7804808A/en unknown
- 1978-07-26 ZA ZA00784237A patent/ZA784237B/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004110727A1 (en) * | 2003-06-16 | 2004-12-23 | Oy Kwh Pipe Ab | Method and system for forming a reducer for pipes |
Also Published As
Publication number | Publication date |
---|---|
ZA784237B (en) | 1979-08-29 |
BR7804808A (en) | 1979-04-10 |
IN148869B (en) | 1981-07-04 |
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