DE2503528A1 - Air vents for moulds used for metals or plastics - where base contains stiffening ribs between vent holes or slots - Google Patents
Air vents for moulds used for metals or plastics - where base contains stiffening ribs between vent holes or slotsInfo
- Publication number
- DE2503528A1 DE2503528A1 DE19752503528 DE2503528A DE2503528A1 DE 2503528 A1 DE2503528 A1 DE 2503528A1 DE 19752503528 DE19752503528 DE 19752503528 DE 2503528 A DE2503528 A DE 2503528A DE 2503528 A1 DE2503528 A1 DE 2503528A1
- Authority
- DE
- Germany
- Prior art keywords
- slots
- holes
- stiffening ribs
- nozzle
- ribs
- 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- Withdrawn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
- 229920003023 plastic Polymers 0.000 title claims abstract description 7
- 239000004033 plastic Substances 0.000 title claims abstract description 7
- 239000002184 metal Substances 0.000 title claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 4
- 150000002739 metals Chemical class 0.000 title 1
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003801 milling Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000001055 chewing effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000007103 stamina Effects 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
- B22C7/065—Venting 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Düse für Formen in der Metallgießerei und in der Kunststoffverarbeitung u. Nozzle for molds in metal foundries and in plastics processing u.
Die Erfindung betrifft eine topfartige Düse, die in ein Loch in der Wand einer Form eingesetzt dazu dient, daß bei der Herstellung des Formlings Luft entweichen kann und daß vorzugsweise in der Kunststoffverarbeitung schäumbarer Kunststoff in der Form bedampt werden kann.The invention relates to a pot-like nozzle which is inserted into a hole in the Wall of a mold used to ensure that air in the production of the molding can escape and that preferably in the plastics processing foamable plastic can be damned in the form.
Derartige Düsen tragen im Topfboden Schlitze oder löcher - hierunter sollen Löcher unterschiedlicher Herstellung und Form verstanden werden. Da diese Düsen bei einem Außendurchmesser von z. B. IOmm bis zu 6 oder 7 Schlitze oder bis zu 20 Löcher von einer lichten Weite bis herunter zu O,25mm haben, ist es verständlich, daß die Herstellung der löcher oder Schlitze Probleme aufwirft, obwohl sie keine enge Toleranzen haben. Die Schlitze lassen sich einigermaßen rationell herstellen, wobei allerdings die Präzision zu wünschen übrig läßt. Die Bohrungen dagegen erfordern einen hohen Zeitaufwand, so daß Düsen dieser Art wegen des damit verbundenen hohen Preises trotz besserer Eignung nur selten eingesetzt werden. Die Herstellung soll aber rationell sein, sodaß etwa ein einzelnes Fräsen der Schlitze oder Bohren der Löcher möglichst vermieden werden muß. Es kommt daher vorzugsweise nur ein gleichzeitiges Stanzen aller Schlitze oder Löcher in Frage, das aber bei einer relativ dicken Düsenplatte - eine Materialstärke von 2mm läßt aber ein loch von allenfalls 2mm Durchmesser zu - an das Wersczeug zu hohe Anforderungen an Härte und Stehvermögen stellt.Such nozzles have slots or holes in the bottom of the pot - below should be understood holes of different manufacture and shape. This one Nozzles with an outer diameter of z. B. IOmm up to 6 or 7 slots or up to have 20 holes with a clearance down to 0.25mm, it is understandable that the production of the holes or slots poses problems, although they are none have tight tolerances. The slots can be made reasonably efficiently, although the precision leaves something to be desired. The holes, however, require a lot of time, so that nozzles of this type because of the associated high In spite of their better suitability, they can rarely be used. The production is supposed to but be rational, so that a single milling of the slots or drilling of the Holes must be avoided as much as possible. There is therefore preferably only one simultaneous Punching all slots or holes in question, but with a relatively thick nozzle plate - a material thickness of 2mm leaves a hole with a diameter of 2mm at most too - on the tool too high demands on hardness and Stamina represents.
uer Erfindung liegt die Aufgabe zu Grunde eine Düse zu entwickeln, deren Schlitze oder Löcher rationell mit möglichst einfachem -8ierkzeug insbesondere durch Stanzen aber trotzdem mit der erforderlichen @razion hergestellt werden können.The invention is based on the task of developing a nozzle, their slots or holes rationally with the simplest possible -8ierkzeug in particular but can still be produced by punching with the required @razion.
Nach der Erfindung wird die Aufgabe dadurch gelöst, daß die die Schlitze oder die Löcher aufnehmende Bodenplatte der topfartigen Düse auf ihrer Innenseite Versteifungsrippen trägt und daß die Schlitze oder Löcher in den Vertiefungen zwischen den Rippen angebracht sind. Bei Benutzung von Dusenlöchern kann man die Versteifungsrippen in einem Vierecksnatz, z.B. in einem Kautenmuster, anordnen und die Löcher in deren Vertiefungen, die Trichter- und Pyramidenform haben, einstanzen. An den Stellen, an denen die Schlitze oder Löcher angebracht - eingestanzt - werden, sollte die Düsenplatte eine Dicke von möglichst O,3rnm haben. Bei Düsenschlitzen wird man zweckmäßig die Versteifungsrippen in einer parallelen Gitterschar anordnen.According to the invention, the object is achieved in that the the slots or the hole-receiving bottom plate of the pot-like nozzle on its inside Stiffening ribs and that the slots or holes in the recesses between attached to the ribs. When using shower holes you can use the stiffening ribs in a square, e.g. in a chewing pattern, and the holes in their Punch wells in the shape of a funnel and pyramid. In the places where the slots or holes are made - punched - should be the The nozzle plate should have a thickness of 0.3 mm if possible. With nozzle slots one becomes expedient arrange the stiffening ribs in a parallel grid.
Diese Düsenform kann leicht durch Spritzen, Fressen oder im Druckgußverfahren aus l!eetall oder Kunststoff vorgefertigt werden.This nozzle shape can easily be achieved by injection molding, milling or die-casting can be prefabricated from l! eetall or plastic.
In der Zeichnung ist die Erfindung in zwei Ausführungsbeispielen dargestellt und zwar zeigt: Fig. 1 eine Düse in Ansicht, Fig. 2 einen Blickt auf die Innenseite einer Düsenplatte mit rautenartigem Muster der Versteifungsrippen und mit löchern, Fig. 3 einen Blick auf die Innenseite einer Düseni#atte mit einer parallelen Schar von Versteifungsrippen und Schlitzen, Fig. 4 einen Schnitt durch die Däsenplatte nach Figur 3 entlang der Linie IV-IV.In the drawing, the invention is shown in two exemplary embodiments and specifically shows: FIG. 1 a view of a nozzle, FIG. 2 a view of the inside a nozzle plate with a diamond-like pattern of the stiffening ribs and with holes, Fig. 3 a view of the inside of a nozzle nozzle with a parallel array of Stiffening ribs and slots, Fig. 4 shows a section through the nozzle plate Figure 3 along the line IV-IV.
Die Bodenplatte 2 einer Düse 1 ist auf ihrer Innenseite mit in einem Rautenmuster angeordneten Versteifungsrippen 3 versehen, in deren Vertiefungen die Löcher 4 angebracht sind.The bottom plate 2 of a nozzle 1 is on its inside with in one Provided diamond pattern arranged stiffening ribs 3, in the wells Holes 4 are attached.
Bei dem Beispiel nach den Figuren 3 und 4 trägt die Bodenplatte 12 eine parallele Schar von Varsteifungsrippen 13, zwischen denen die Schlitze 14 angebracht sind.In the example according to FIGS. 3 and 4, the base plate 12 carries a parallel set of stiffening ribs 13, between which the slots 14 are attached are.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752503528 DE2503528A1 (en) | 1975-01-29 | 1975-01-29 | Air vents for moulds used for metals or plastics - where base contains stiffening ribs between vent holes or slots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752503528 DE2503528A1 (en) | 1975-01-29 | 1975-01-29 | Air vents for moulds used for metals or plastics - where base contains stiffening ribs between vent holes or slots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2503528A1 true DE2503528A1 (en) | 1976-08-05 |
Family
ID=5937551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752503528 Withdrawn DE2503528A1 (en) | 1975-01-29 | 1975-01-29 | Air vents for moulds used for metals or plastics - where base contains stiffening ribs between vent holes or slots |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2503528A1 (en) |
-
1975
- 1975-01-29 DE DE19752503528 patent/DE2503528A1/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8130 | Withdrawal |