DE19828321A1 - Cylindrical fluted fabric web filter elements for use in fuel filters, etc. - Google Patents
Cylindrical fluted fabric web filter elements for use in fuel filters, etc.Info
- Publication number
- DE19828321A1 DE19828321A1 DE19828321A DE19828321A DE19828321A1 DE 19828321 A1 DE19828321 A1 DE 19828321A1 DE 19828321 A DE19828321 A DE 19828321A DE 19828321 A DE19828321 A DE 19828321A DE 19828321 A1 DE19828321 A1 DE 19828321A1
- Authority
- DE
- Germany
- Prior art keywords
- bellows
- filter
- halves
- longitudinal
- filter insert
- 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- Withdrawn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
- 239000000446 fuel Substances 0.000 title claims description 4
- 239000004744 fabric Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000000969 carrier Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 241000446313 Lamella Species 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000004826 seaming Methods 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000008901 benefit Effects 0.000 description 5
- 239000004831 Hot glue Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
-
- 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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- 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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- 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
- B29C66/50—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
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
-
- 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
-
- 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
- B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
- B29K2711/12—Paper, e.g. cardboard
- B29K2711/123—Coated
-
- 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
- B29L2031/14—Filters
Abstract
Description
Die Erfindung geht aus von einem Filtereinsatz in Sternbauart und einem Verfahren zu seiner Herstellung nach der Gattung der Ansprüche 1 bzw. 6.The invention relates to a filter insert in Star design and a process for its manufacture the genus of claims 1 and 6, respectively.
Es ist schon ein Filtereinsatz in Sternbauart sowie ein Verfahren zu seiner Herstellung aus der DE 24 17 551 B2 bekannt, das sich insbesondere für Flüssigkeitsfilter in Sternfilterbauart eignet. Bei diesem Filtereinsatz wird ein ein- oder mehrschichtiges Bandmaterial zickzackförmig gefaltet und zu einem ziehharmonikaartigen, sich längserstreckenden Balg geformt, von der ein Teil abgelängt wird und in eine kreiszylindrische Form umgeformt wird, bei dem beide aneinanderstoßende Enden des Balgs durch einen Längsverschluß dicht und fest miteinander verbunden werden. Das so hergestellte hohlzylindrische Filterelement wird in an sich bekannter Weise stirnseitig noch mit zwei Endkappen leckfrei verbunden, um so einen Filtereinsatz zu bilden. Von Nachteil bei dieser Bauart des Filtereinsatzes ist, daß dieser Schritt vom sich längs erstreckenden Balg zum kreisförmigen Zylinder, also aus einer Ebene heraus in ein dreidimensionales Gebilde von der Technik der Handhabung her gesehen relativ schwierig ist und deshalb meist manuell oder mit sehr hohem technischen Aufwand realisiert wird. Bei diesem Filtereinsatz, der lediglich einen einzigen Längsverschluß aufweist, muß der Balg in seiner ganzen Länge in eine volle Kreisform überführt werden, was einen hohen technischen Aufwand erfordert und einer einfachen, kostengünstigen Automatisierung der Herstellung entgegensteht.It is already a star-shaped filter insert as well as a Process for its preparation from DE 24 17 551 B2 known that is particularly suitable for liquid filters in Star filter type is suitable. With this filter insert a single or multi-layer tape material zigzag folded and into an accordion-like, itself elongated bellows shaped, part of which is cut to length is and is formed into a circular cylindrical shape, at where both abutting ends of the bellows by one Longitudinal closure tightly and firmly connected. The hollow cylindrical filter element thus produced is in in a manner known per se at the end with two end caps connected leak-free to form a filter insert. From The disadvantage of this type of filter insert is that this step from the longitudinal bellows to the circular cylinder, i.e. from one plane into one three-dimensional structure from the technique of handling seen relatively difficult and therefore mostly manual or is realized with a very high technical effort. At this filter insert, which is only a single one Has longitudinal closure, the bellows must be in its entire length be converted into a full circular shape, which is a high requires technical effort and a simple, low cost automation of manufacturing opposes.
Ferner ist aus der FR 2 273 574 A1 ein Filtereinsatz bekannt, bei dem ein einziges, aus Flachmaterial bestehendes Sieb durch angespritzte, axial verlaufende gerade Längsrippen und durch stirnseitig angespritzte, halbkreisförmige Randstreben als zwei Halbschalen ausgebildet sind. Die beiden Halbschalen sind durch das Sieb selbst gelenkig miteinander verbunden und zu einem hohlzylindrischen Filterelement zusammenklappbar, wobei ein rastender Längsverschluß die beiden Halbschalen dicht zusammenhält. Hier wird zwar durch die angespritzten Rippen und Streben die Handhabung der beiden Halbschalen erleichtert. Jedoch eignet sich diese Bauweise nicht für einen Filtereinsatz, bei dem aus einem zickzackförmig geformten Balg ein Filterelement in Sternfilterbauart hergestellt werden soll. Auch ist die Handhabung zweier gelenkig miteinander verbundener Halbschalen mit einem relativ empfindlichen Sieb fertigungstechnisch schwer durchführbar und läßt sich schlecht automatisieren.FR 2 273 574 A1 is also a filter insert known in which a single, made of flat material Sieve through molded, axially running straight Longitudinal ribs and by injection molded on the semicircular edge struts as two half shells are trained. The two half-shells are through the sieve itself articulated to one another hollow cylindrical filter element collapsible, one latching longitudinal closure tightly the two half-shells holds together. Here is through the molded ribs and strive to handle the two half shells facilitated. However, this type of construction is not suitable for a filter insert, which consists of a zigzag shaped bellows a filter element in star filter design to be manufactured. Also handling two articulated half shells with a relatively sensitive sieve difficult to manufacture feasible and difficult to automate.
Der erfindungsgemäße Filtereinsatz in Sternbauart mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß seine Bauweise erheblich erleichtert wird. Vor allem lassen sich bei der Herstellung seine einzelnen Bauteile erheblich leichter handhaben und verarbeiten. Die Herstellung des Filtereinsatzes läßt sich dadurch besser automatisieren. Die Herstellung zweier Längsnuten an zwei Balghälften läßt sich relativ einfach beherrschen; der relativ geringe Mehraufwand durch eine zusätzliche Längsnaht wird durch den Vorteil der leichteren und einfacheren Herstellung mehr als ausgeglichen. Gemäß dem Verfahren nach Anspruch 6 wird dabei ein vereinfachtes Herstellungsverfahren angegeben, das sich besonders gut für eine Automation eignet. Das Verfahren nach Anspruch 6 arbeitet besonders platzsparend und kostengünstig und ermöglicht die Herstellung von Filtereinsätzen, die hohen Qualitätsanforderungen genügen.The filter insert according to the invention in a star design with the characteristic features of claim 1 has in contrast the advantage that its construction is made considerably easier. Above all, its individual can be used in the manufacture Handling and processing components considerably easier. The This makes it easier to manufacture the filter insert automate. The production of two longitudinal grooves on two Bellows halves are relatively easy to control; of the relatively little additional effort due to an additional longitudinal seam is the benefit of the lighter and simpler Manufacturing more than balanced. According to the procedure Claim 6 is a simplified Manufacturing process specified that is particularly good for automation is suitable. The method of claim 6 works particularly space-saving and inexpensive enables the production of filter cartridges that are high Quality requirements are sufficient.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Filtereinsatzes bzw. des im Anspruch 6 angegebenen Verfahrens zu dessen Herstellung möglich. Mit der vorgeschlagenen Bauart bzw. dem vorgeschlagenen Verfahren läßt sich der Schritt aus der Ebene vom geschlossenen Balg hin zu einem dreidimensionalen Gebilde des hohlzylindrischen Filterelements wesentlich einfacher handhaben und damit auch besser, kostengünstiger und schneller automatisieren. Weitere vorteilhafte - Ausgestaltungen ergeben sich aus den übrigen Ansprüchen und der Beschreibung.By the measures listed in the subclaims advantageous further developments and improvements of the Claim 1 specified filter insert or in claim 6 specified method for its production possible. With the proposed design or the proposed The step from the level of closed bellows to a three-dimensional structure of the hollow cylindrical filter element much easier handle and thus better, cheaper and automate faster. More advantageous - Refinements result from the remaining claims and the description.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Fig. I eine perspektivische Darstellung eines erfindungsgemäßen Filtereinsatzes in Sternbauart in vereinfachter Darstellung, Fig. 2 in vereinfachter, perspektivischer Darstellung ein Filterelement für den Filtereinsatz nach Fig. 1, Fig. 3 einen Längsschnitt durch das Filterelement nach Fig. 2 und die Fig. 4 bis 7 verschiedene Stufen beim Verfahren zum Herstellen eines Filtereinsatzes nach Fig. 1 in vereinfachter Darstellung.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. In the drawings Fig. I is a perspective view of a filter insert according to the invention in a star type in a simplified illustration, Fig. 2 is a simplified, perspective view of a filter element for the filter insert according to Fig. 1, Fig. 3 a longitudinal section through the filter element of FIG. 2 and FIG . 4 to 7 illustrate various stages in process for producing a filter insert according to Fig. 1 in a simplified representation.
Die Fig. 1 zeigt in perspektivischer und vereinfachter Darstellung einen Filtereinsatz 10 in Sternbauart, wie er vor allem bei Kraftstoffiltern verwendet wird. Der Filtereinsatz 10 weist ein radial durchströmtes Filterelement 11 in Sternfilterbauart auf, das in an sich bekannter Weise zwischen zwei stirnseitigen Endkappen 12 und 13 leckagefrei angeordnet ist. Das hohlzylindrische, kreisförmige Filterelement 11 nimmt in seinem Inneren noch ein gelochtes Innenrohr 14 auf, das sich zwischen den beiden Endkappen 12, 13 erstreckt und den Filtereinsatz 10 in seiner Form stabilisiert. Fig. 1 shows a perspective and simplified representation of a filter insert 10 in star design, as is used above all in fuel filters. The filter insert 10 has a radially flowed through filter element 11 in a star filter type, which is arranged in a manner known per se between two end caps 12 and 13 at the end without leakage. The hollow cylindrical, circular filter element 11 still accommodates a perforated inner tube 14 in its interior, which extends between the two end caps 12 , 13 and stabilizes the shape of the filter insert 10 .
Wie die Fig. 2 zeigt, die das Filterelement 11 für sich allein in perspektivischer, vereinfachter Darstellung näher zeigt, läßt sich das Filterelement 11 herstellen, indem ein zum Filtern geeignetes Bandmaterial durch zickzackförmiges Falten zu einem sich längs erstreckenden Balg verformt wird und dieser anschließend in eine im wesentlichen zylindrische Form gebracht wird. In der kreiszylindrischen Form stoßen zwei Endteile 15, 16 des Balgs 17 aneinander und werden durch einen Längsverschluß 18, der sich zwischen beiden Stirnseiten erstreckt fest und dicht miteinander verbunden. Wie nun die Fig. 1 in Verbindung mit Fig. 2 näher zeigt, besteht der Balg 17 aus zwei gleichgroßen, die gleiche Anzahl von Falten aufweisenden Balghälften 19, 21, wobei deren anderen Endteile 23 bzw. 24 durch einen zweiten Längsverschluß 22 dicht miteinander verbunden sind. Der zweite Längsverschluß 22 ist in gleicher Weise aufgebaut, wie der erste Längsverschluß 18 und liegt zu letzterem diametral.As shown in FIG. 2, which shows the filter element 11 in more detail in a perspective, simplified representation, the filter element 11 can be produced by a band material suitable for filtering being deformed by zigzag-shaped folding to form a longitudinally extending bellows and this subsequently in is brought into a substantially cylindrical shape. In the circular cylindrical shape, two end parts 15 , 16 of the bellows 17 abut each other and are firmly and tightly connected to one another by a longitudinal closure 18 , which extends between the two end faces. As shown in FIG. 1 in connection with FIG. 2, the bellows 17 consists of two bellows halves 19 , 21 of the same size, having the same number of folds, the other end parts 23 and 24 of which are tightly connected to one another by a second longitudinal closure 22 are. The second longitudinal closure 22 is constructed in the same way as the first longitudinal closure 18 and is diametrical to the latter.
Die Fig. 3 zeigt in vereinfachter Darstellung einen Längsschnitt durch das Filterelement 11 nach Fig. 2, wobei zwischen den beiden Balghälften 19 und 21 der erste Längsverschluß 18 erkennbar ist. Die beiden Längsverschlüsse 18 und 22 können in verschiedener, an sich bekannter Weise hergestellt werden. Dabei wird in jedem Längsverschluß 18, 22 ein Bindemittel 25 eingelegt, wobei dieses vorzugsweise aus einer aus Heißschmelzkleber ausgebildeten Kunststoff- Schnur bestehen kann, die durch Ultraschallschweißen mit den angrenzenden Flächen der Endteile 15, 16 bzw. 23, 24 dicht und fest verbunden wird. Dabei läßt sich als Bandmaterial für das Filterelement 11 ein geeignetes Filterpapier verwenden, das sich besonders für ein Kraftstoffilter eignet. FIG. 3 shows a simplified illustration of a longitudinal section through the filter element 11 according to FIG. 2, the first longitudinal closure 18 being recognizable between the two bellows halves 19 and 21 . The two longitudinal closures 18 and 22 can be manufactured in various ways known per se. A binder 25 is inserted into each longitudinal closure 18 , 22 , which may preferably consist of a plastic cord formed from hot-melt adhesive, which is connected tightly and firmly by ultrasonic welding to the adjacent surfaces of the end parts 15 , 16 and 23 , 24 , respectively. A suitable filter paper, which is particularly suitable for a fuel filter, can be used as the band material for the filter element 11 .
Die Fig. 4 bis 7 zeigen nun mehrere Verfahrensschritte, wie sie bei der Herstellung eines Filterelements 11 nach Fig. 2 durchlaufen werden. Als Ausgangsmaterial für ein Filterelement 11 wird wie bisher ein Bandmaterial oder Filtermaterial durch zickzackförmiges Falten zu einem ziehharmonikaförmigen Balg verformt, der sich in Längsrichtung erstreckt. Von diesem Balg werden durch Ablängen bzw. Schneiden einzelne Teile abgetrennt. Die Fig. 4 zeigt nun, wie nach dem Schneiden zwei gleich große Balghälften 19, 21 in zwei Werkstückträgern 26, 27 positioniert werden. Die untereinander gleichen Werkstückträger 26, 27 haben einen im wesentlichen U- förmigen Querschnitt, wobei sie mit ihren zugespitzten, freien Schenkeln 28, 29, jeweils in die äußersten Taschen 30 der ersten Balghälfte 19 bzw. der zweiten Balghälfte 21 greifen. Dieses Positionieren der Balghälften 19, 21 in den Werkzeugträgern 26 bzw. 27 geschieht so, daß die Endteile 15, 23 der ersten Balghälfte 19 aus dem ersten Werkstückträger 26 heraus schauen, während in entsprechender Weise die Endteile 16, 24 der zweiten Balghälfte 21 aus dem zweiten Werkstückträger 27 herausschauen. Mit Hilfe der beiden Werkstückträger 26, 27 werden die Balghälften 19, 21 in der in Fig. 4 dargestellten Weise aufeinandergesetzt, so daß die einander zugeordneten, aus dem Werkstückträger herausragenden Endteile 15, 16 bzw. 23, 24 genau aufeinander liegen. Zudem werden die beiden Balghälften 19, 21 durch eine flache Trennzunge 31 voneinander im Abstand gehalten, wobei deren Breite kleiner ist, als der Abstand zwischen den Schenkeln 28, 29, so daß zwischen den Schenkein 28, 29 nur die Balghälften 19, 21 eingespannt werden. FIGS. 4 to 7 now show several process steps as are executed in the manufacture of a filter element 11 of FIG. 2. As the starting material for a filter element 11 , a band material or filter material is deformed by zigzag folding to form an accordion-shaped bellows which extends in the longitudinal direction. Individual parts are cut from this bellows by cutting or cutting. FIG. 4 shows, as positioned after cutting two equal bellows halves 19, 21 in two workpiece carriers 26, 27. The workpiece carriers 26 , 27 , which are identical to one another, have an essentially U-shaped cross section, with their pointed, free legs 28 , 29 each engaging in the outermost pockets 30 of the first bellows half 19 and the second bellows half 21 , respectively. This positioning of the bellows halves 19 , 21 in the tool carriers 26 and 27 occurs so that the end parts 15 , 23 of the first bellows half 19 look out of the first workpiece carrier 26 , while in a corresponding manner the end parts 16 , 24 of the second bellows half 21 from the Look out the second workpiece carrier 27 . With the help of the two workpiece carriers 26 , 27 , the bellows halves 19 , 21 are placed one on top of the other in the manner shown in FIG. 4, so that the mutually associated end parts 15 , 16 and 23 , 24 projecting from the workpiece carrier lie exactly on top of one another. Moreover, the two bellows halves 19 are held at 21 by a flat release tongue 31 spaced apart, the width of which is smaller, so that clamped than the distance between the legs 28, 29 between the legs 28, 29, only the bellows halves 19, 21 .
Die Fig. 5 zeigt nun in vereinfachter Form, wie zwischen den beiden Werkstückträgern 26, 27 die beiden Balghälften 19 und 21 eingespannt sind, wobei an den aus den Werkstückträgern auf beiden Seiten herausragenden Endteilen der erste Längsverschluß 18 und der zweite Längsverschluß 22 angebracht werden. In besonders zweckmäßiger Weise läßt sich dieser Längsverschluß erreichen, wenn als Bindemittel 25 eine geeignete Kunststoff-Rundschnur, z. B. PAG, eingelegt wird und diese mit Ultraschall verschweißt wird, so daß eine ausreichend feste und dichte Verbindung zwischen den jeweiligen Endteilen 15, 16 bzw. 23, 24 entsteht. FIG. 5 shows, in simplified form, as between the two workpiece carriers 26, 27, the two bellows halves are clamped 19 and 21, wherein attached to the protruding from the workpiece carriers on both sides of end portions of the first longitudinal seal 18 and the second longitudinal shutter 22. In a particularly advantageous manner, this longitudinal seal can be achieved when as the binder 25 a suitable plastic O-z. B. PAG, is inserted and this is welded with ultrasound, so that a sufficiently firm and tight connection between the respective end parts 15 , 16 and 23 , 24 arises.
Die Fig. 6 zeigt nun in vereinfachter Form einen weiteren Verfahrensschritt, wobei der noch quaderförmige Balg 17 aus den Werkstückträgern 26, 27 entnommen wird und mittels einer elementaren, einfachen Linearbewegung in ein Führungswerkzeug 32 gebracht wird, in dem der noch verschlossene Balg durch Führen geöffnet wird. Dabei kann zum Einführen und zum Öffnen auch die Trennzunge 31 mitverwendet werden. Nach dem Durchlaufen des Führungswerkzeuges 32 läßt man den Balg 17 aufspringen, so daß er die in Fig. 7 gezeigte kreisrunde Form einnehmen kann. Dabei ist von Vorteil, daß die vor allem im Bereich der Längsverschlüsse 18, 22 herrschende Vorspannung in den Balghälften 19, 21 dafür sorgt, daß der verschlossene Balg 17 in seine kreisrunde Form aufspringt, wenn man ihm ausreichend Raum zur Verfügung stellt. Die zylindrische Form des Balgs 17 bestehend aus zwei gleich großen Balghälften 19, 21 kann durch ein kreiszylindrisches Außenrohr 33 unterstützt werden und dessen weitere Verarbeitung erleichtern. Das Filterelement 11 kann nach Erreichen seiner zylindrischen Form durch Anbringen der Endkappen 12, 13 in an sich bekannter Weise zu dem Filtereinsatz 11 weiterverarbeitet werden. Fig. 6 shows, in simplified form, a further method step, wherein the still block-shaped bellows 17 is removed from the workpiece carriers 26, 27 and is brought into a guide tool 32 by means of a basic, simple linear motion in which the still sealed bellows opened by passing becomes. The separating tongue 31 can also be used for insertion and opening. After passing through the guide tool 32 , the bellows 17 is allowed to spring open so that it can assume the circular shape shown in FIG. 7. The advantage here is that the prestress in the bellows halves 19 , 21 , particularly in the area of the longitudinal closures 18 , 22 , ensures that the closed bellows 17 pops up into its circular shape if sufficient space is made available to it. The cylindrical shape of the bellows 17 consisting of two bellows halves 19 , 21 of the same size can be supported by a circular cylindrical outer tube 33 and facilitate its further processing. After reaching its cylindrical shape, the filter element 11 can be further processed into the filter insert 11 by attaching the end caps 12 , 13 in a manner known per se.
Durch die Herstellung des Filterelements 11 aus zwei gleichen Balghälften 19, 21 wird erreicht, daß sich die beiden Balghälften mit Hilfe der Werkstückträger wesentlich einfacher handhaben lassen als ein einziger, längerer Balg, der in eine zylindrische Form umgeformt werden muß. Durch die Ausbildung und Anordnung der beiden Längsverschlüsse läßt sich der Herstellungsprozeß besonders einfach automatisieren, wobei der Schritt aus der Ebene des noch geschlossenen, quaderförmigen Balgs in das dreidimensionale Gebilde des kreiszylindrischen Filterelements handhabungstechnisch leicht darstellbar ist.By producing the filter element 11 from two identical bellows halves 19 , 21 it is achieved that the two bellows halves can be handled much more easily with the aid of the workpiece carriers than a single, longer bellows which has to be formed into a cylindrical shape. Due to the design and arrangement of the two longitudinal seals, the manufacturing process can be automated particularly easily, the step from the level of the still closed, cuboid bellows into the three-dimensional structure of the circular cylindrical filter element being easy to handle in terms of handling.
Selbstverständlich sind an der gezeigten Ausführungsform Änderungen möglich, ohne vom Gedanken der Erfindung abzuweichen. So kann das Filterelement anstelle der dargestellten kreiszylindrischen eine davon abweichende, z. B. ovale Form aufweisen, ohne auf die Vorteile der Erfindung verzichten zu müssen. Die beiden Längsverschlüsse können auch in anderer Weise und Form durchgeführt werden. Anstelle des Innenrohrs kann auch ein Außenrohr verwendet werden; auch sind Bauarten mit Innen- und Außenrohr oder ohne beide Rohre möglich.Of course, are shown on the embodiment shown Changes possible without departing from the spirit of the invention to deviate. So the filter element instead of the shown circular cylindrical one deviating from it, e.g. B. have oval shape without sacrificing the benefits of To have to do without invention. The two longitudinal locks can also be carried out in other ways and forms. Instead of the inner tube, an outer tube can also be used become; are also types with inner and outer tube or possible without both pipes.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE19828321A DE19828321A1 (en) | 1998-06-25 | 1998-06-25 | Cylindrical fluted fabric web filter elements for use in fuel filters, etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE19828321A DE19828321A1 (en) | 1998-06-25 | 1998-06-25 | Cylindrical fluted fabric web filter elements for use in fuel filters, etc. |
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DE19828321A1 true DE19828321A1 (en) | 1999-12-30 |
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DE19828321A Withdrawn DE19828321A1 (en) | 1998-06-25 | 1998-06-25 | Cylindrical fluted fabric web filter elements for use in fuel filters, etc. |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2411116A1 (en) * | 2009-03-24 | 2012-02-01 | Camfil Farr, Inc. | Canister air filter and method for fabricating the same |
DE102011011771A1 (en) * | 2011-02-18 | 2012-08-23 | Mann + Hummel Gmbh | Method for manufacturing filter element for filtering e.g. air, used in motor vehicle, involves interconnecting end sections of planar filter material sheet with each other by plastic material |
EP2572794A2 (en) | 2011-09-21 | 2013-03-27 | Jürgen Kögel | Filter insert |
CN103418173A (en) * | 2012-05-18 | 2013-12-04 | 和兴滤清器科技株式会社 | Filter element and method of manufacturing a filter element |
DE102015207565B4 (en) | 2015-04-24 | 2020-06-18 | Robert Bosch Gmbh | Filter element, liquid filter and arrangement |
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DE29519235U1 (en) * | 1995-12-05 | 1996-01-25 | Biedron Ralf | Filters in the form of a hollow cylinder |
EP0702144A2 (en) * | 1994-09-13 | 1996-03-20 | Robert Bosch Gmbh | Replaceable filter element for cleaning fuel and filter casing for the installation of the replaceable filter element |
WO1996023569A1 (en) * | 1995-02-03 | 1996-08-08 | Nippondenso Co., Ltd. | Filter |
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US3283904A (en) * | 1962-09-11 | 1966-11-08 | Gen Motors Corp | Filter element having dual porosities |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2411116A1 (en) * | 2009-03-24 | 2012-02-01 | Camfil Farr, Inc. | Canister air filter and method for fabricating the same |
EP2411116A4 (en) * | 2009-03-24 | 2012-10-03 | Camfil Farr Inc | Canister air filter and method for fabricating the same |
US8540791B2 (en) | 2009-03-24 | 2013-09-24 | Camfil Farr, Inc. | Canister air filter and method for fabricating the same |
DE102011011771A1 (en) * | 2011-02-18 | 2012-08-23 | Mann + Hummel Gmbh | Method for manufacturing filter element for filtering e.g. air, used in motor vehicle, involves interconnecting end sections of planar filter material sheet with each other by plastic material |
EP2572794A2 (en) | 2011-09-21 | 2013-03-27 | Jürgen Kögel | Filter insert |
EP2572794A3 (en) * | 2011-09-21 | 2013-12-25 | Jürgen Kögel | Filter insert |
CN103418173A (en) * | 2012-05-18 | 2013-12-04 | 和兴滤清器科技株式会社 | Filter element and method of manufacturing a filter element |
DE102015207565B4 (en) | 2015-04-24 | 2020-06-18 | Robert Bosch Gmbh | Filter element, liquid filter and arrangement |
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