DE860266C - Process for producing springs from plastic and the device used for this purpose - Google Patents
Process for producing springs from plastic and the device used for this purposeInfo
- Publication number
- DE860266C DE860266C DER876D DER0000876D DE860266C DE 860266 C DE860266 C DE 860266C DE R876 D DER876 D DE R876D DE R0000876 D DER0000876 D DE R0000876D DE 860266 C DE860266 C DE 860266C
- Authority
- DE
- Germany
- Prior art keywords
- mold
- plastic
- mold insert
- longitudinally divided
- spring
- 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
- 238000000034 method Methods 0.000 title claims description 7
- 239000004033 plastic Substances 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 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
- 238000000465 moulding Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
Um zylindrische und kegelsturnpfmantelförmige Schraubenfedern bzw. gewundene Federn aus thermoplastischem, aus Polymerisationsprodukten bestehendem Kunststoff oder aus aushärtbarem Kunstharz herzustellen, liegt es nahe, ein Verfahren anzuwenden, gemäß welchem der aus einer Düse frei austretende Kunststoffstrang in noch plastischem Zustand durch entsprechende I Umlenkvorrichtungen zu einer Feder geformt bzw. gewickelt wird. Bei einem solchen Verfahren ergibt sich jedoch der schwerwiegende Nachteil, daß durch das drucklose Erstarren des frei austretenden Kunststoffes die Festigkeit sowie die genaue Formgebung des Erzeugnisses sehr stark zu wünschen ühriglassen. In order to create cylindrical and tapered helical springs or coiled springs made of thermoplastic, consisting of polymerisation products To produce plastic or hardenable synthetic resin, it seems obvious to use a process apply, according to which the plastic strand emerging freely from a nozzle in still plastic state through appropriate deflection devices to a spring is shaped or wound. With such a method, however, the result is serious disadvantage that due to the unpressurized solidification of the freely exiting Plastic, the strength and the exact shape of the product is very strong leave to wish.
Um hier nun Abhilfe zu schaffen, wird gemäß der vorliegenden Erfindung vorgeschlagen, zur Herstellung von zylindrischen oder kegelstumpfmantelförmigen Schraubenfedern bzw. zur Herstellung von gewundenen Federn aus thermoplastischem, aus Polymerisationsprodukten bestehendem Kunststoff oder aus aushärtbarem Kunstharz den Werkstoff in eine die ganzen Schraulbienwindungen im Federquerschnitt als geschlossenen Kanal enthaltende Form von einem Ende zum anderen Ende durchfließend zu spritzen oder zu preßspritzen. In order to remedy this situation, according to the present invention proposed for the production of cylindrical or truncated cone-shaped Coil springs or for the production of coiled springs from thermoplastic, plastic made from polymerisation products or from curable synthetic resin the material into one of the entire screw windings in the spring cross-section as a closed one To inject channel containing form flowing through from one end to the other end or to injection molding.
Das neue Herstellungsverfahren bietet eine Reihe von beachtlichen Vorteilen: Die an sich komplizierte Form der Feder kann infolge der Erzeugung derselben in einer geschlossenen Form fertigungstechnisch ohne Schwierigkeiten hergestellt werden. The new manufacturing process offers a number of remarkable Advantages: The intricate form of the spring can as a result of the creation of the same Manufactured in a closed form manufacturing technology without difficulties will.
Die Erzeugung des Federstranges kann vorzugsweise von einer Einspritzstelle aus erfolgen, so daß dieFlleßrichtung des Werkstoffes mit der neutralen Faser der Feder gleichgerichtet ist, wodurch naeh dem Erstarren die optimalen Eigenschaften des Werkstoffes mit Sicherheit in dem Erzeugnis zur Auswirkung gelangen. The spring strand can preferably be generated by an injection point out so that the flow direction of the material with the neutral fiber of the The spring is rectified, which means that the optimum properties are obtained after solidification of the material will certainly have an effect in the product.
Die Formgebung der ganzen Feder erfolgt unter allseitigem Druck in der geschlossenen Form, wodurch höchste Dichte des Werkstoffes und damit größteFestigkeit des Erzeugnisses gewährleistet ist. The entire spring is shaped under pressure on all sides in the closed form, resulting in the highest density of the material and therefore the greatest strength of the product is guaranteed.
Endlich ist durch Anwendung einer geschlossenen Form höchste Haltbarkeit und Gleichmäßigkeit der Feder garantiert. Finally, the use of a closed mold ensures maximum durability and uniformity of the spring guaranteed.
Die Erfindung erstreckt sich weiterhin noch auf eine zur Ausführung des neuen Verfahrens besonders vorteilhaft geeignete Form, welche darin besteht, daß der den Formhohlraum bildende Schraubenwindungskanal in der Innenfläche eines an sich bekannten, außen konischen längs geteilten Formeinsatzes vorgesehen ist, wobei die Innenbegrenzung des Schraubenwindungskanals durch die glatte Außenfläche eines gleichfalls an sich bekannten Formkerns begrenzt wird, dessen eine Endfläche vorzugsweise mit einem raddalenEingußkanal versehen sein kann. The invention still further extends to one for implementation of the new method particularly advantageously suitable form, which consists in that the screw thread channel forming the mold cavity in the inner surface of a known, externally conical, longitudinally divided mold insert is provided, the inner limitation of the screw thread channel through the smooth outer surface a mandrel, which is also known per se, is limited, one end face of which can preferably be provided with a radial sprue.
In der Zeichnung ist zur Erläuterung der Erfindung ein Ausführuhgsbeispiel der neuen Formvorrichtung dargestellt. The drawing shows an exemplary embodiment to explain the invention the new molding device shown.
Es bezeichnet I die bewegliche Druckplatte, welche den äußeren tFormring 3 trägt, dessen Inneres einen konisch verlaufenden Hohlraum aufweist. I denotes the movable pressure plate, which forms the outer ring 3 carries, the interior of which has a conical cavity.
In dem Hohlraum des äußeren Formringes 3 befindet sich der außen entsprechend konisch ausgebildete längs, geteilte Form einsatz 4, in dessin Innenfläche der den eigentlichen Formhohlraum bildende Schraubenwindungskanal 6 eingearbeitet ist. Dabei wird die Innenbegrenzung des Schraubenwindungskanals 6 durch die glatte Außenfläche dXes Formkernes 5 gebildet, welcher gleichfalls an der beweglichen Druckplatte I befestigt ist. In the cavity of the outer molded ring 3 is the outside Correspondingly conical longitudinal, split mold insert 4, in the design of the inner surface the screw winding channel 6 which forms the actual mold cavity is incorporated is. The inner boundary of the screw winding channel 6 is thereby smooth Outer surface of the mold core 5 is formed, which is also on the movable pressure plate I is attached.
2 bezeichnet die feste Druckplatte, durch deren Düse 7 beim Spritzvorgang der Werkstoff in den Formhohlraum 6 eingespritzt wird. 2 denotes the fixed pressure plate, through its nozzle 7 during the spraying process the material is injected into the mold cavity 6.
Beim Öffnen der Form wird unter Bewegung der Druckplatte I nach links, an welcher Bewegung der Forntloern 5 teilnimmt, durch die. Auswerfer 8 und den Auswerferring g der die gespritzte Feder enthaltende Formeinsatz 4 aus dem äußeren Formring 3 ausgeworfen, und durch Öffnen des geteilten Formeinsatzes 4 kann alsdann die erzeugte Feder ohne weiteres aus der Form gelöst werden. When the mold is opened, the pressure plate I is moved to the left, in which movement the Forntloern 5 participates through the. Ejector 8 and the ejector ring g the mold insert 4 containing the injection-molded spring from the outer mold ring 3 ejected, and by opening the divided mold insert 4 can then the generated Spring can easily be released from the mold.
Das der festen Druckplatte 2 zugewandte Ende des Formkerns 5 ist mit einem radialen Angußkanal 10 versehen, welcher die Verbindur,g zwischen der Spritzdüse 7 und dem Anlauf der Feder form 6 bildet. The end of the mold core 5 facing the fixed pressure plate 2 is provided with a radial runner 10, which the connection g between the Spray nozzle 7 and the start of the spring form 6 forms.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER876D DE860266C (en) | 1942-05-23 | 1942-05-23 | Process for producing springs from plastic and the device used for this purpose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER876D DE860266C (en) | 1942-05-23 | 1942-05-23 | Process for producing springs from plastic and the device used for this purpose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE860266C true DE860266C (en) | 1952-12-18 |
Family
ID=7395302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER876D Expired DE860266C (en) | 1942-05-23 | 1942-05-23 | Process for producing springs from plastic and the device used for this purpose |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE860266C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051095B (en) * | 1956-12-11 | 1959-02-19 | Siemens Ag | Bi-strip that bends when it gets warm |
| DE1094050B (en) * | 1956-12-19 | 1960-12-01 | Renault | Torsion spring arrangement in the form of two coiled spiral springs connected in series |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR816356A (en) * | 1935-08-17 | 1937-08-06 | Siemens Ag | Process for the production of spirals of polystyrol and similar materials |
-
1942
- 1942-05-23 DE DER876D patent/DE860266C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR816356A (en) * | 1935-08-17 | 1937-08-06 | Siemens Ag | Process for the production of spirals of polystyrol and similar materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051095B (en) * | 1956-12-11 | 1959-02-19 | Siemens Ag | Bi-strip that bends when it gets warm |
| DE1094050B (en) * | 1956-12-19 | 1960-12-01 | Renault | Torsion spring arrangement in the form of two coiled spiral springs connected in series |
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