DE10150419A1 - Method for sealing pipe and container joints by means of an internal pressure on thin edges involves chamfering of the pipe ends or sealing lips of containers at an acute angle - Google Patents
Method for sealing pipe and container joints by means of an internal pressure on thin edges involves chamfering of the pipe ends or sealing lips of containers at an acute angleInfo
- Publication number
- DE10150419A1 DE10150419A1 DE2001150419 DE10150419A DE10150419A1 DE 10150419 A1 DE10150419 A1 DE 10150419A1 DE 2001150419 DE2001150419 DE 2001150419 DE 10150419 A DE10150419 A DE 10150419A DE 10150419 A1 DE10150419 A1 DE 10150419A1
- Authority
- DE
- Germany
- Prior art keywords
- sealing
- pipe
- seal according
- chamfered
- internal pressure
- 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- Withdrawn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
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 230000001154 acute effect Effects 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title abstract 2
- 239000000155 melt Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003032 molecular docking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
- F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2725—Manifolds
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2725—Manifolds
- B29C45/2727—Modular manifolds; Connections between spaced manifold elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
In der Spritzgußtechnik von Kunststoffen wird in sogenannten Heißkanälen Thermoplastschmelze von der Maschinendüse zu den Formnestern gefördert. Wegen der unterschiedlichen Temperaturen des gekühlten Werkzeugs und des Heißkanals ist die Abdichtung solcher Heißkanäle ein ständiges Problem. Versuche ergaben, daß ein Anfasen der Rohrenden auf einen spitzen Winkel von ungefähr 30° eine wirksame Abdichtung ergibt, da der hohe Innendruck den dünnen Metallrand gegen die Innenwand der Angußdüse oder des Mundstücks oder sonstigen Behälters ect. preßt. In plastic injection molding technology, so-called hot runners are used Thermoplastic melt conveyed from the machine nozzle to the mold nests. Because of the different temperatures of the cooled tool and the hot runner Sealing such hot runners is a constant problem. Experiments have shown that chamfering the pipe ends provide an effective seal at an acute angle of approximately 30 °, because the high internal pressure pushes the thin metal rim against the inner wall of the sprue nozzle or the mouthpiece or other container ect. presses.
Die Kontur des angefasten Rohrendes braucht nicht linear zu sein, sie kann auch als Hohlkehle oder konvex etc. ausgebildet werden. The contour of the chamfered pipe end need not be linear, it can also be as Fillet or convex etc. are formed.
Die durch den Innendruck erzeugte Axialkraft muß durch eine Fixierung des Rohrs aufgenommen werden. Im Falle einer geraden Rohrstrecke mit zwei angefasten Rohrenden, wie sie beim Transport der Schmelze zu einem einzigen Anschnitt zur Anwendung kommt, kompensiert sich die Axialkraft und das Rohr kann schwimmend gelagert werden, sodaß es sich ungehemmt thermisch ausdehenen kann. The axial force generated by the internal pressure must be achieved by fixing the pipe be included. In the case of a straight pipe section with two chamfered pipe ends, how it is used to transport the melt to a single gate, compensates for the axial force and the tube can be floating, so that it can expand thermally uninhibited.
Die Axialkraft kann auch durch die Reibung zwischen der Außenwand des angefasten Rohrendes und der Innenwand der Bohrung aufgenommen werden. Der Fasenwinkel ist dann abhängig vom Reibungsfaktor zwischen den beiden Wänden und wesentlich kleiner als 30°. Auch durch eine oder mehrere zylindrische Abtragungen der Rohrwand wird eine Aufnahme der Axialkraft erreicht, wobei zu überprüfen ist, ob die verbleibende Wandstärke ausreicht. The axial force can also be chamfered by the friction between the outer wall Pipe end and the inner wall of the bore are included. The bevel angle is then depending on the friction factor between the two walls and much smaller than 30 °. A recording is also made by one or more cylindrical ablation of the pipe wall of the axial force, whereby it must be checked whether the remaining wall thickness is sufficient.
Das Abdichtprinzip beschränkt sich nicht auf Heißkanäle in Spritzgußwerkzeugen. Auch andere Werkstoffe wie zum Beispiel Kunststoffrohre für den Transport von Flüssigkeiten (z. B. Wasser) oder Gase (z. B. Luft) können auf diese Weise abgedichtet werden. Durch Profilierung der Außenwände des Rohrendes mittels Noppen etc. entsteht durch den Innendruck eine kraftschlüssige, dichte Verbindung, die die Axialkräfte aufnimmt. The sealing principle is not limited to hot runners in injection molding tools. Other materials such as plastic pipes for the transport of Liquids (e.g. water) or gases (e.g. air) can be sealed in this way become. By profiling the outer walls of the pipe end using knobs etc. due to the internal pressure, a non-positive, tight connection that absorbs the axial forces.
Auch Behälter, Reaktoren oder Verteilerkammern werden durch angefaste Ränder abgedichtet. Als Beispiel dient eine Verteilerkammer für Kunststoffschmelze. Der Deckel dieser Kammer ist mit einer angefasten Dichtlippe versehen. Containers, reactors or distribution chambers are also marked by chamfered edges sealed. A distribution chamber for plastic melt serves as an example. The lid this chamber is provided with a chamfered sealing lip.
In der Spritzgußtechnik ermöglicht das Abdichten mit angefasten Rohrenden die Schmelzenverteilung auf zwei oder mehrere Anschnitte im Mundstück. Nach einer zentralen Bohrung wird die Schmelze radial zu den einzelnen Heißkanälen verteilt, wobei die beheizten Rohre in Nuten der Werkzeug-Deckplatte zu den Anschnittbohrungen laufen. An den meist um 90° gebogenen Rohrabschnitten sorgen verstellbare Fixierungen, daß die angefasten Rohrenden nicht aus den Bohrungen des Mundstücks oder den Angußdüsen rutschen. Bei geschraubten Rohrverbindungen wird der Rand des innen geschraubten Rohrendes angefast und dichtet dadurch ab. In injection molding technology, sealing with chamfered pipe ends enables Melt distribution over two or more gates in the mouthpiece. According to a central The melt is distributed radially to the individual hot runners, with the heated ones Run pipes in the grooves of the tool cover plate to the gate holes. Most of the time Adjustable pipe sections that are bent by 90 ° ensure that the chamfered Do not slip tube ends out of the mouthpiece holes or sprue nozzles. In the case of screwed pipe connections, the edge of the inside screwed pipe end chamfered and thereby seals.
Bei Flanschverbindungen von Rohren wird ein Dichtungsring mit zwei inneren Dichtlippen
zwischen die Rohrenden gepreßt. Der Vorteil besteht darin, daß die Schrauben nicht
nachgezogen werden müssen, da die Abdichtung allein durch den Innendruck bewirkt wird.
ZEICHNUNGSERKLÄRUNG
FIGURE 1
a angefaste Rohrenden
b Transportrohr, schwimmend gelagert
c Rohrheizung
d Mundstück
e Heizmanschette
f Angußdüse
g Spritzgußwerkzeug
h Formnest
i Andockfläche für Maschinendüse
FIGURE 2
a Rohrende mit konkaver Fase
b Rohrende mit zylindrischer Abtragung der Wandstärke
c Rohrende mit kleinem Fasenwinkel zur Aufnahme der Axialkraft durch Reibung
d elastisches Rohrende mit Noppen zur Aufnahme der Axialkraft
FIGURE 3
a Verteilerkammer
b Dichtlippe
c Transportrohre für Schmelze
d Rohrheizung
e Eingangskanal
f Andockfläche für Maschinendüse
g Heizmanschette
h Angußdüsen
FIGURE 4
a angefaste Rohrenden
b Eingangskanal
c Rohrheizungen
d Nuten in der Werkzeug-Deckplatte
e Fixierelemente Für Transportrohre
f Schmelzeverteilung
g Formnester
h Andockfläche für Maschinendüse
i beheiztes Mundstück
FIGURE 5
a Rohrenden
b Verschraubung
c angefaster Dichtrand
FIGURE 6
a Rohrflansche
b Dichtringe
For flange connections of pipes, a sealing ring with two inner sealing lips is pressed between the pipe ends. The advantage is that the screws do not have to be retightened, since the seal is caused solely by the internal pressure. DRAWING STATEMENT FIGURE 1
a chamfered pipe ends
b Transport tube, floating
c pipe heating
d mouthpiece
e heating jacket
f sprue nozzle
g injection mold
h mold nest
i Docking surface for machine nozzle
FIGURE 2
a Pipe end with a concave chamfer
b Pipe end with cylindrical removal of the wall thickness
c Pipe end with a small chamfer angle to absorb the axial force due to friction
d elastic tube end with knobs to absorb the axial force
FIGURE 3
a distribution chamber
b sealing lip
c Transport pipes for the melt
d pipe heating
e input channel
f Docking area for machine nozzle
g heating jacket
h sprue nozzles
FIGURE 4
a chamfered pipe ends
b input channel
c pipe heating
d Grooves in the tool cover plate
e Fixing elements For transport pipes
f Melt distribution
g mold nests
h Docking area for machine nozzle
i heated mouthpiece
FIGURE 5
a pipe ends
b screw connection
c chamfered sealing edge
FIGURE 6
a pipe flanges
b sealing rings
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001150419 DE10150419A1 (en) | 2001-10-11 | 2001-10-11 | Method for sealing pipe and container joints by means of an internal pressure on thin edges involves chamfering of the pipe ends or sealing lips of containers at an acute angle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001150419 DE10150419A1 (en) | 2001-10-11 | 2001-10-11 | Method for sealing pipe and container joints by means of an internal pressure on thin edges involves chamfering of the pipe ends or sealing lips of containers at an acute angle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10150419A1 true DE10150419A1 (en) | 2003-05-08 |
Family
ID=7702298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2001150419 Withdrawn DE10150419A1 (en) | 2001-10-11 | 2001-10-11 | Method for sealing pipe and container joints by means of an internal pressure on thin edges involves chamfering of the pipe ends or sealing lips of containers at an acute angle |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10150419A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1025041C2 (en) * | 2003-12-17 | 2005-02-08 | S P G Promatrix B V | Hot runner system for injection moulding apparatus, comprises modular arrangement of support blocks and tubes with grooved ends |
EP1533098A1 (en) * | 2003-08-30 | 2005-05-25 | ZIMMERMANN, Wolfgang | Controlling the heat transfer at the nozzle tip with a pin-point gate using melt pressure |
US7465165B2 (en) | 2005-04-07 | 2008-12-16 | Mold-Masters (2007) Limited | Configurable manifold |
US7614869B2 (en) | 2007-05-08 | 2009-11-10 | Mold-Masters (2007) Limited | Manifold nozzle connection for an injection molding system |
US7775788B2 (en) | 2008-08-05 | 2010-08-17 | Mold-Masters (2007) Limited | Melt transfer components for a stack molding system |
US7845936B2 (en) | 2009-01-21 | 2010-12-07 | Mold-Masters (2007) Limited | Sealing arrangement for an edge gated nozzle in an injection molding system |
US7874833B2 (en) | 2009-05-03 | 2011-01-25 | Mold-Masters (2007) Limited | Injection molding runner apparatus having pressure seal |
US8282386B2 (en) | 2009-01-22 | 2012-10-09 | Mold-Masters (2007) Limited | Injection molding apparatus |
JP2016215614A (en) * | 2015-05-26 | 2016-12-22 | 日産自動車株式会社 | Injection molding die |
DE112007001238B4 (en) * | 2006-06-15 | 2017-07-13 | Husky Injection Molding Systems Ltd. | Device for preventing leakage in the field of injection molding |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE533905A (en) * | ||||
DE801604C (en) * | 1948-10-02 | 1951-01-15 | Basf Ag | Self-sealing cone |
DE1175951B (en) * | 1959-12-21 | 1964-08-13 | Bergwerksverband Gmbh | Flange connection for pipelines exposed to high outside temperatures and flowed through by a cooling medium |
DE1899227U (en) * | 1964-03-28 | 1964-08-20 | Fritz Carl | FLANGE CONNECTIONS, IN PARTICULAR FOR CONNECTING PIPES OF HEATING OIL BATTERY TANKS. |
DD160541A3 (en) * | 1979-12-19 | 1983-09-14 | Schwerin Plastverarb Veb | HOT RUNNER DISTRIBUTOR |
JPS6227123A (en) * | 1985-07-29 | 1987-02-05 | Shigeru Tsutsumi | Injection molding method for synthetic resin and its device |
DE4234119A1 (en) * | 1991-10-16 | 1993-04-22 | Kao Corp | Layout for multiple-impression resin casting - includes prim. resin feeders radiating from main duct and sec. feeders leading from prim. feeders to mould cavity inlets |
US5804231A (en) * | 1996-12-23 | 1998-09-08 | General Motors Corporation | Expandable hot runner manifold |
JP2000130656A (en) * | 1998-10-22 | 2000-05-12 | Nitto Kohki Co Ltd | Packing and pipe joint assembling same |
DE20100840U1 (en) * | 2001-01-16 | 2001-04-05 | Guenther Gmbh & Co Kg Metallve | Hot runner nozzle |
DE19955377A1 (en) * | 1999-11-10 | 2001-06-07 | Mannesmann Ag | Pipe connection |
DE10008722A1 (en) * | 2000-02-24 | 2001-08-30 | Ewikon Heiskanalsysteme Gmbh & | Hot duct connector, e.g. for injection molding tool, includes a spring-loaded cylindrical junction piece to provide a sliding joint |
-
2001
- 2001-10-11 DE DE2001150419 patent/DE10150419A1/en not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE533905A (en) * | ||||
DE801604C (en) * | 1948-10-02 | 1951-01-15 | Basf Ag | Self-sealing cone |
DE1175951B (en) * | 1959-12-21 | 1964-08-13 | Bergwerksverband Gmbh | Flange connection for pipelines exposed to high outside temperatures and flowed through by a cooling medium |
DE1899227U (en) * | 1964-03-28 | 1964-08-20 | Fritz Carl | FLANGE CONNECTIONS, IN PARTICULAR FOR CONNECTING PIPES OF HEATING OIL BATTERY TANKS. |
DD160541A3 (en) * | 1979-12-19 | 1983-09-14 | Schwerin Plastverarb Veb | HOT RUNNER DISTRIBUTOR |
JPS6227123A (en) * | 1985-07-29 | 1987-02-05 | Shigeru Tsutsumi | Injection molding method for synthetic resin and its device |
DE4234119A1 (en) * | 1991-10-16 | 1993-04-22 | Kao Corp | Layout for multiple-impression resin casting - includes prim. resin feeders radiating from main duct and sec. feeders leading from prim. feeders to mould cavity inlets |
US5804231A (en) * | 1996-12-23 | 1998-09-08 | General Motors Corporation | Expandable hot runner manifold |
JP2000130656A (en) * | 1998-10-22 | 2000-05-12 | Nitto Kohki Co Ltd | Packing and pipe joint assembling same |
DE19955377A1 (en) * | 1999-11-10 | 2001-06-07 | Mannesmann Ag | Pipe connection |
DE10008722A1 (en) * | 2000-02-24 | 2001-08-30 | Ewikon Heiskanalsysteme Gmbh & | Hot duct connector, e.g. for injection molding tool, includes a spring-loaded cylindrical junction piece to provide a sliding joint |
DE20100840U1 (en) * | 2001-01-16 | 2001-04-05 | Guenther Gmbh & Co Kg Metallve | Hot runner nozzle |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1533098A1 (en) * | 2003-08-30 | 2005-05-25 | ZIMMERMANN, Wolfgang | Controlling the heat transfer at the nozzle tip with a pin-point gate using melt pressure |
NL1025041C2 (en) * | 2003-12-17 | 2005-02-08 | S P G Promatrix B V | Hot runner system for injection moulding apparatus, comprises modular arrangement of support blocks and tubes with grooved ends |
WO2005058577A1 (en) * | 2003-12-17 | 2005-06-30 | S.P.G. Promatrix B.V. | Hot runner system |
US7465165B2 (en) | 2005-04-07 | 2008-12-16 | Mold-Masters (2007) Limited | Configurable manifold |
US7802983B2 (en) | 2005-04-07 | 2010-09-28 | Mold-Masters (2007) Limited | Configurable manifold |
DE112007001238B4 (en) * | 2006-06-15 | 2017-07-13 | Husky Injection Molding Systems Ltd. | Device for preventing leakage in the field of injection molding |
US7614869B2 (en) | 2007-05-08 | 2009-11-10 | Mold-Masters (2007) Limited | Manifold nozzle connection for an injection molding system |
US7775788B2 (en) | 2008-08-05 | 2010-08-17 | Mold-Masters (2007) Limited | Melt transfer components for a stack molding system |
US7845936B2 (en) | 2009-01-21 | 2010-12-07 | Mold-Masters (2007) Limited | Sealing arrangement for an edge gated nozzle in an injection molding system |
US8282386B2 (en) | 2009-01-22 | 2012-10-09 | Mold-Masters (2007) Limited | Injection molding apparatus |
US7874833B2 (en) | 2009-05-03 | 2011-01-25 | Mold-Masters (2007) Limited | Injection molding runner apparatus having pressure seal |
JP2016215614A (en) * | 2015-05-26 | 2016-12-22 | 日産自動車株式会社 | Injection molding die |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |