BR9805178A - Mechanism of actuation of valve member in injection molding. - Google Patents
Mechanism of actuation of valve member in injection molding.Info
- Publication number
- BR9805178A BR9805178A BR9805178-4A BR9805178A BR9805178A BR 9805178 A BR9805178 A BR 9805178A BR 9805178 A BR9805178 A BR 9805178A BR 9805178 A BR9805178 A BR 9805178A
- Authority
- BR
- Brazil
- Prior art keywords
- valve
- actuation
- pin plate
- cam
- bars
- Prior art date
Links
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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
- B29C2045/2831—Needle valves driven by a cam
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
"MECANISMO DE ACIONAMENTO DE MEMBRO DE VáLVULA EM MOLDAGEM POR INJEçãO", compreendendo uma máquina para moldar a injeção multi-cavidades com entrada de válvula. Um número de pinos de válvula estendem-se anteriormente, a partir de uma chapa de pino de válvula, cada um em alinhamento com uma entrada que conduz a uma cavidade no molde. Um par de barras de came estendem-se ao lado de um par de barras de acionamento vinculadas à chapa de pino de válvula. Blocos deslizantes retangulares anexos a cada barra de acionamento encaixam-se em ranhuras diagonais na barra de came adjacente, onde o movimento longitudinal das barras de came movimentam a chapa de pino de válvula e os pinos de válvula para a frente e para atrás. As barras de came são conduzidas longitudinalmente por mecanismo de acionamento eletro-mecânico para simultaneamente e precisamente paralisar os pinos de válvula em, pelo menos, três diferentes e precisas posições durante cada ciclo de injeção."MECHANISM FOR DRIVING VALVE MEMBER IN INJECTION MOLDING", comprising a machine for molding multi-cavity injection with valve inlet. A number of valve pins extend previously, from a valve pin plate, each in alignment with an inlet leading to a cavity in the mold. A pair of cam bars extend alongside a pair of actuation bars attached to the valve pin plate. Rectangular sliding blocks attached to each actuation bar fit into diagonal grooves in the adjacent cam bar, where the longitudinal movement of the cam bars move the valve pin plate and the valve pins forward and backward. The cam bars are driven longitudinally by an electro-mechanical actuation mechanism to simultaneously and precisely paralyze the valve pins in at least three different and precise positions during each injection cycle.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2222381 | 1997-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9805178A true BR9805178A (en) | 2000-04-25 |
Family
ID=4161806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9805178-4A BR9805178A (en) | 1997-11-27 | 1998-11-11 | Mechanism of actuation of valve member in injection molding. |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BR9805178A (en) |
-
1998
- 1998-11-11 BR BR9805178-4A patent/BR9805178A/en not_active Application Discontinuation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FA | Application withdrawn |