GB1212924A - Improvements in or relating to injection moulding machines - Google Patents
Improvements in or relating to injection moulding machinesInfo
- Publication number
- GB1212924A GB1212924A GB31321/68A GB3132168A GB1212924A GB 1212924 A GB1212924 A GB 1212924A GB 31321/68 A GB31321/68 A GB 31321/68A GB 3132168 A GB3132168 A GB 3132168A GB 1212924 A GB1212924 A GB 1212924A
- Authority
- GB
- United Kingdom
- Prior art keywords
- injection
- pressure
- mould
- unit
- moulds
- 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
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
- B29C45/76—Measuring, controlling or regulating
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
1,212,924. Injection moulding. F. STUBBE. 1 July, 1968 [5 July, 1967], No. 31321/68. Heading B5A. An injection moulding machine in which the injection nozzle 10 is moved into engagement with the mould 6 by a pressure actuated feed unit 16 includes a control device 14 to actuate the injection step when pressure within the feed unit builds up to a desired value. A rotary table 2 carries mould units 3, each comprising moulds clamped between plates 4, 5, which moulds are brought, in turn, into alignment with an injection unit 1 which is urged towards the moulds by a pair of hydraulic feed units 16. The cylinders 19, Fig. 2, of the units are stationary, and their piston-rods act through springs 13 to engage a projection 18 on the injection unit to force its nozzle against a feed bush 8 of the mould. A switch 14 is secured to the injection unit adjacent the end of one of the rods 17 so that when pressure in that feed unit builds up due to the engagement of the nozzle and mould, the force of the spring 13 is overcome and the switch is actuated by the end of the rod to initiate the injection step. The pressure necessary to effect this operation is varied by adjusting the position of a cap nut 15 on the rod end. Alternatively the spacing z may be varied. The injection step may alternatively be triggered by a pressure switch connected with the pressure chamber of the hydraulic feed unit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1583702 | 1967-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1212924A true GB1212924A (en) | 1970-11-18 |
Family
ID=5679542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31321/68A Expired GB1212924A (en) | 1967-07-05 | 1968-07-01 | Improvements in or relating to injection moulding machines |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | USRE27590E (en) |
| JP (1) | JPS4836936B1 (en) |
| CH (1) | CH479388A (en) |
| GB (1) | GB1212924A (en) |
-
1968
- 1968-06-10 CH CH855668A patent/CH479388A/en not_active IP Right Cessation
- 1968-07-01 GB GB31321/68A patent/GB1212924A/en not_active Expired
- 1968-07-05 JP JP43047053A patent/JPS4836936B1/ja active Pending
-
1971
- 1971-07-27 US US27590D patent/USRE27590E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| USRE27590E (en) | 1973-03-06 |
| CH479388A (en) | 1969-10-15 |
| JPS4836936B1 (en) | 1973-11-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |