DE2028009C3 - Molding tool for processing thermoplastic material with mold halves that can be moved towards one another - Google Patents
Molding tool for processing thermoplastic material with mold halves that can be moved towards one anotherInfo
- Publication number
- DE2028009C3 DE2028009C3 DE2028009A DE2028009A DE2028009C3 DE 2028009 C3 DE2028009 C3 DE 2028009C3 DE 2028009 A DE2028009 A DE 2028009A DE 2028009 A DE2028009 A DE 2028009A DE 2028009 C3 DE2028009 C3 DE 2028009C3
- Authority
- DE
- Germany
- Prior art keywords
- mold
- mold halves
- plates
- thermoplastic material
- molding tool
- 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
Links
- 239000012815 thermoplastic material Substances 0.000 title claims description 4
- 238000000465 moulding Methods 0.000 title claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 240000007313 Tilia cordata Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/202—Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
- B29C2049/563—Clamping means
- B29C2049/5635—Avoiding mould deformation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
Die Anmeldung betrifft ein Formwerkzeug zum Verarbeiten von thermoplastischem Material mit gegeneinander bewegbaren Formhälften, von denen mindestens eine auf einem Formträger unter Zwischenschalten eines aufblasbaren Druckkissens abgestützt ist.The application relates to a molding tool for processing thermoplastic material with Mold halves movable against one another, of which at least one is placed on a mold carrier with interposition an inflatable pressure cushion is supported.
Formwerkzeuge zum Verarbeiten von thermoplastischem Material sind bereits in unterschiedlicher Ausführung bekannt. Die Formhälften werden dabei meist parallel gegeneinander verfahren. Selbst bei engtolerierten Führungselementen zur Abstützung der Formhälften treten jedoch im Laufe der Zeit immer wieder dadurch Schwierigkeiten auf, daß die Formhälften mit ihren gegeneinanderweisenden Teilungsflächen nicht mehr in der Parallelität übereinstimmen. Dies führt zwangläufig beim Herstellen von Hohlkörpern oder auch beim Spritzgießen und Spritzprägen zu unschönen und schließlich störenden Nahtstellen an den Formungen.Forming tools for processing thermoplastic material are already in different Execution known. The mold halves are usually moved parallel to each other. Even at Close-tolerance guide elements for supporting the mold halves occur over time again and again because of the difficulties that the mold halves with their mutually facing dividing surfaces no longer match in parallelism. This inevitably leads to the manufacture of Hollow bodies or in injection molding and injection compression molding to unsightly and ultimately annoying Seams on the formations.
Gerade bei der Herstellung dünnwandiger Hohlkörper ist ferner an der Nahtstelle die Festigkeit der Wandung, die durch Ausquetschen von thermoplastischer Masse erheblich dünner wird, in Frage gestellt.Especially in the production of thin-walled hollow bodies, the strength of the joint is also important Wall, which is considerably thinner by squeezing out thermoplastic mass, called into question.
Um die Spalte zwischen den Formhälften klein zu halten, ist es bereits bekannt, eine Formhälfte über drei parallelliegende, miteinander nicht verbundene, gefüllte Schläuche gegen einen Formträger abzustützen. Die Schläuche stehen für sich unter einem Druck von 1,5 bis 3 atü. Da sie nicht miteinander verbunden sind und somit kein Druckausgleich zwischen den unterschiedlichen Drücken der einzelnen Schläuche stattfinden kann, ist es nicht möglich, damit eine veränderbare Ausrichtung der Formhälften zueinander zu erreichen.In order to keep the gap between the mold halves small, it is already known to have a mold half over support three parallel, non-connected, filled hoses against a mold carrier. The hoses are under a pressure of 1.5 to 3 atmospheres. Since they are not with each other are connected and therefore no pressure equalization between the different pressures of the individual Tubing can take place, it is not possible to allow a changeable alignment of the mold halves to reach each other.
Ausgehend von einer solchen bekannten Vorrichtung und unter Vermeidung der aufgezeigten Nachteile ist es Ziel der Erfindung, ein besseres Ausrichten der Formhälften zueinander zu erreichen.Starting from such a known device and avoiding the disadvantages indicated It is the aim of the invention to achieve better alignment of the mold halves with one another.
Die Lösung dieser Aufgabe besteht darin, daß das Druckkissen aus zwei an seinen Rändern dichtend miteinander verbundenen Platten gebildet ist, daß die Platten innerhalb einer Führung gelagert sind und daß ihr Abstand gegenüber dem Formträger mit austauschbaren Distanzstücken einstellbar ist.The solution to this problem is that the pressure pad consists of two sealing at its edges interconnected plates is formed that the plates are stored within a guide and that their distance from the mold carrier is adjustable with interchangeable spacers.
Auf diese Weise werden im Laufe der Zeit auf tretende Verschleißerscheinungen an den Führungv und Halteelementen für die Formhälften aufgefangen, wot^i mit den Distanzstücken zunächst eine Grobausrichtung vorgenommen wird. Durch den besseren Druckausgleich im Druckkissen ist die ParallelitätIn this way, signs of wear and tear on the guide v are over time and holding elements for the mold halves collected, wot ^ i first a rough alignment with the spacers is made. The parallelism is due to the better pressure compensation in the pressure pad
und der dichte Abschluß beider Formhälften sewährleistet. Hierdurch treten keine gegen die Wandung gepreßte Materialien in die von den Formhälften gebildete Teilungsebene ein, was dazu führt, daß die auszuformenden Gegenstände nahezu gratfrei hergestellt werden können.and the tight seal of both mold halves sewn. As a result, no materials pressed against the wall enter the one formed by the mold halves A dividing plane, which means that the objects to be formed are made almost burr-free can be.
Nach einem weiteren Merkmal der Erfindung wird Vorgeschlagen, daß die Platten mit ihrer Außenfläche gegen ein Polster gestützt sind.According to a further feature of the invention it is proposed that the plates with their outer surface are supported against a cushion.
Die zwischen den Formhälften und/oder Formhälftenlager und dem Träger angeordneten elastischen Platten des Druckkissens werden von dem Polster beidseitig abgestützt. Etwaige auf den Stirnflächen vorhandene Bohrlöcher zur Befestigung des Trägers oder der Formen selbst werden von dem Polster abgeschlossen. Auf diese Weise werden die flexiblen Platten ganzflächig auf schonendste Weise abgestützt.The elastic ones arranged between the mold halves and / or mold half bearings and the carrier Plates of the pressure pad are supported on both sides by the pad. Any on the end faces existing drill holes for attaching the carrier or the forms themselves are closed by the cushion. In this way, the entire surface of the flexible panels is supported in the most gentle way.
Ferner wird vorgeschlagen, daß die FormhälftenIt is also proposed that the mold halves
an einem Formhälftenlager gehalten sind, das an zwei gegenüberliegenden Seiten L-förmige Schenkelare held on a mold half bearing, the L-shaped legs on two opposite sides
aufweist, die in eine T-förmige Hebeeinrichtung des Formträgers greifen.which engage in a T-shaped lifting device of the mold carrier.
Hierdurch wird es möglich, die Formhälften selbst unabhängig vom Formhälftenlager beliebig gegeneinander auszutauschen, ohne gleichzeitig das Formhälftenlager umrüsten zu müssen. Das Formhälftenlager ist dabei von dem Formträger abziehbar. Die in der Halteeinrichtung angeordneten Dislanzplatten ermöglichen schließlich eine leichte Austauschbarkeit und stellen die genaue Ausrichtung des Formhälftenlagers sicher. Während der Montage auftretende Ungenauigkeiten oder ein Verschleiß der Distanzplatten werden durch Austausch schnellst, ns behoben.This makes it possible to place the mold halves against each other independently of the mold half bearing can be exchanged without having to convert the half-mold bearing at the same time. The half-mold bearing can be removed from the mold carrier. The spacing plates arranged in the holding device finally allow easy interchangeability and provide the exact alignment of the mold half bearing secure. Inaccuracies occurring during assembly or wear of the Spacer plates are fixed as quickly as possible by exchanging them.
An Hand der Zeichnung wird nachstehend ein Ausführungsbeispiel der Erfindung näher erläutert. Die Zeichnung zeigt einen Querschnitt durch eine Formhälfte mit Formträger.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. The drawing shows a cross section through a mold half with a mold carrier.
Die Formhälfte 1 ist mit einem Formhälftenlager 2 fest verschraubt. Die freien Schenkel 5, 4 des Formhälftenlagers 2 weisen an ihrem linde lotrecht zur Schenkelachse nach innen gerichtete Stege S, 6 auf, welche hinter Gegenstege 7, 8 eines Formträgers 9, 10 greifen.The mold half 1 is firmly screwed to a mold half bearing 2. The free legs 5, 4 of the half-mold bearing 2 have on their linden tree perpendicular to the leg axis inwardly directed webs S, 6, which engage behind counter webs 7, 8 of a mold carrier 9, 10.
Zwischen Formhälftenlager 2 und Formträger 9, 10 ist ein Druckkissen 14 angeordnet. Gemäß dem
dargestellten Ausführungsbeispiel besteht das Druckkissen aus zwei an ihren Rändern 12 dichtend miteinander
verbundenen flexiblen Platten 13. Der von den Platten 13 eingeschlossene Hohlraum ist über
einen nicht dargestellten Anschluß mittels Druckmedium beaufschlagbar. Die Platten 13 stützen sich
mit ihrer Außenfläche gegen ein Polster 17, 18 ab.
Zwischen den Stegen 5, 6 des Formhälftenlagers 2A pressure pad 14 is arranged between the mold half bearing 2 and the mold carrier 9, 10. According to the illustrated embodiment, the pressure pad consists of two flexible plates 13 sealingly connected to one another at their edges 12. The cavity enclosed by the plates 13 can be acted upon by means of pressure medium via a connection (not shown). The outer surface of the plates 13 is supported against a cushion 17, 18.
Between the webs 5, 6 of the mold half bearing 2
und den Gegenstegen 7, 8 des Formträgers 9, 10 sind austauschbare Distanzstücke 19 vorgesehen.and the counter webs 7, 8 of the mold carrier 9, 10 exchangeable spacers 19 are provided.
Bei Beaufschlagung des Hohlraumes des Druckkissens mit Druckmedium werden die lotrechten Stege 5, 6 fest gegen die Gegenstege 7, 8 des Form- 5 nommen.When the pressure medium is applied to the cavity of the pressure pad, the vertical Web 5, 6 firmly against the counter webs 7, 8 of the shape 5 taken.
trägers 9, 10 angepreßt. Etwaige ParaHehtatsverschu.-bung.a der miteinander korrespondierenden Formhälften 1,1' werden unmittelbar von den Platten 13 durch Verdrängung des Druckmediums aufge-carrier 9, 10 pressed. Any ParaHehtatsverschu.-Exercise a of the mutually corresponding mold halves 1, 1 ′ are taken directly from the plates 13 by displacement of the pressure medium
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2028009A DE2028009C3 (en) | 1970-06-08 | 1970-06-08 | Molding tool for processing thermoplastic material with mold halves that can be moved towards one another |
| AT368671A AT317531B (en) | 1970-06-08 | 1971-04-29 | Pressure equalization device for two-part molds for the production of objects made of thermoplastic material |
| GB1454671*[A GB1322667A (en) | 1970-06-08 | 1971-05-12 | Apparatus for moulding thermoplastics material |
| NL7106744A NL7106744A (en) | 1970-06-08 | 1971-05-17 | |
| SE06840/71A SE362027B (en) | 1970-06-08 | 1971-05-27 | |
| FR7121573A FR2140353B3 (en) | 1970-06-08 | 1971-06-07 | |
| CH824771A CH523128A (en) | 1970-06-08 | 1971-06-07 | Device for molding thermoplastic material with mold halves that can be moved towards one another |
| CH1333671A CH534044A (en) | 1970-06-08 | 1971-09-10 | Blow-moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2028009A DE2028009C3 (en) | 1970-06-08 | 1970-06-08 | Molding tool for processing thermoplastic material with mold halves that can be moved towards one another |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2028009A1 DE2028009A1 (en) | 1971-12-16 |
| DE2028009B2 DE2028009B2 (en) | 1972-11-30 |
| DE2028009C3 true DE2028009C3 (en) | 1973-09-27 |
Family
ID=5773305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2028009A Expired DE2028009C3 (en) | 1970-06-08 | 1970-06-08 | Molding tool for processing thermoplastic material with mold halves that can be moved towards one another |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT317531B (en) |
| CH (1) | CH523128A (en) |
| DE (1) | DE2028009C3 (en) |
| FR (1) | FR2140353B3 (en) |
| GB (1) | GB1322667A (en) |
| NL (1) | NL7106744A (en) |
| SE (1) | SE362027B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4317476C2 (en) * | 1993-05-26 | 1996-05-15 | Kloeckner Desma Elastomertechn | Device for minimizing expansion on injection molded parts |
| DE19535080A1 (en) * | 1995-09-21 | 1997-03-27 | Ferromatik Milacron Maschinenb | C-frame pressure injection moulding machine maintaining die parallelism and even platen loading |
| DE19609568C2 (en) * | 1996-03-12 | 2000-06-21 | Krauss Maffei Kunststofftech | Pressure compensation device to compensate for canting |
| DE19944111A1 (en) * | 1999-09-15 | 2001-03-22 | Krupp Corpoplast Maschb Gmbh | Method and device for blow molding containers |
| US6459349B1 (en) | 2000-03-06 | 2002-10-01 | General Electric Company | Circuit breaker comprising a current transformer with a partial air gap |
| DE10051838A1 (en) * | 2000-10-19 | 2002-04-25 | Krauss Maffei Kunststofftech | Device for automatic and simultaneous compensation of an angular error and an axis offset in a clamping unit of an injection molding machine |
| DE10051837A1 (en) * | 2000-10-19 | 2002-04-25 | Krauss Maffei Kunststofftech | Device for the compensation of canting in mold closing units of injection molding machines |
| DE10349828A1 (en) * | 2003-10-25 | 2005-06-16 | W + S Solutions Gmbh & Co. Kg | Injection molding machine has platen shaped to deflect under pressure with optional hydraulic assistance so as to reduce mold leakage |
| DE10354506A1 (en) * | 2003-11-21 | 2005-06-09 | Sig Technology Ltd. | Device for blow molding containers |
| DE102010012502B4 (en) * | 2010-03-11 | 2015-03-19 | Khs Corpoplast Gmbh | Device for blow molding containers |
| IT201900007220A1 (en) * | 2019-05-24 | 2020-11-24 | Gea Procomac Spa | MOLD FOR FORMING A CONTAINER STARTING FROM A PREFORM IN THERMOPLASTIC MATERIAL AND RELATED FORMING PROCESS |
-
1970
- 1970-06-08 DE DE2028009A patent/DE2028009C3/en not_active Expired
-
1971
- 1971-04-29 AT AT368671A patent/AT317531B/en not_active IP Right Cessation
- 1971-05-12 GB GB1454671*[A patent/GB1322667A/en not_active Expired
- 1971-05-17 NL NL7106744A patent/NL7106744A/xx unknown
- 1971-05-27 SE SE06840/71A patent/SE362027B/xx unknown
- 1971-06-07 FR FR7121573A patent/FR2140353B3/fr not_active Expired
- 1971-06-07 CH CH824771A patent/CH523128A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL7106744A (en) | 1971-12-10 |
| DE2028009A1 (en) | 1971-12-16 |
| AT317531B (en) | 1974-09-10 |
| DE2028009B2 (en) | 1972-11-30 |
| GB1322667A (en) | 1973-07-11 |
| CH523128A (en) | 1972-05-31 |
| FR2140353A3 (en) | 1973-01-19 |
| SE362027B (en) | 1973-11-26 |
| FR2140353B3 (en) | 1977-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EGA | New person/name/address of the applicant | ||
| 8339 | Ceased/non-payment of the annual fee |