GB1338066A - Injection moulding unit - Google Patents
Injection moulding unitInfo
- Publication number
- GB1338066A GB1338066A GB551173A GB551173A GB1338066A GB 1338066 A GB1338066 A GB 1338066A GB 551173 A GB551173 A GB 551173A GB 551173 A GB551173 A GB 551173A GB 1338066 A GB1338066 A GB 1338066A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- injection
- screw
- piston
- plasticizing
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/10—Injection moulding apparatus using moulds or injection units usable in different arrangements or combinations to each other
-
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/07—Injection moulding apparatus using movable injection units
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
1338066 Injection-moulding K HEHL 1 Dec 1970 [25 April 1970] 5511/73 Divided out of 1338065 Heading B5A An injection moulding unit comprises a plasticizing cylinder with a permanently open nozzle and movable along the injection axis, a plasticizing screw conveyer in the cylinder movable relatively thereto along the injection axis due to the back pressure of the material and a supporting bridge for the plasticizing cylinder and a fluid piston and cylinder, the cylinder comprising sleeve-shaped parts of the bridge for displacement of the plasticizing cylinder. As shown in Fig. 2, the apparatus comprises a plasticizing cylinder 3<SP>1</SP> with nozzle 11<SP>11</SP>, heaters 4, 12<SP>1</SP> and screw conveyer 6, mounted on a supporting bridge 511 having sleeves 219 acting as hydraulic cylinders, the pistons 218 of which are fixed to machine struts 1, 2. Cylinder 216 having piston 215 may retract screw 6 to relieve ramming pressure of the material fed forwardly thereby. Motor 10<SP>1</SP> rotates screw 6. Hydraulic cylinder 217 integral with bridge 511 and its piston 214 which is integral with piston-rod 232 of piston 215 enables forward movement of screw 6 for injection. After plasticization, cam 229 operates switch 231 to stop motor 10<SP>1</SP>, and cylinder 216 charged to retract screw 6, relieving back pressure. Then, cylinders 219 are charged to withdraw the unit from the mould without material escaping from the nozzle 11<SP>11</SP>. The unit is again advanced thereby before injection and the injection stroke of screw 6 is effected by cylinder 217 and terminated by cam 230 abutting switch 231.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702020337 DE2020337A1 (en) | 1970-04-25 | 1970-04-25 | Injection unit for an injection molding machine for processing plastics |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1338066A true GB1338066A (en) | 1973-11-21 |
Family
ID=5769401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB551173A Expired GB1338066A (en) | 1970-04-25 | 1970-12-01 | Injection moulding unit |
Country Status (4)
Country | Link |
---|---|
AT (2) | ATA15272A (en) |
DE (1) | DE2020337A1 (en) |
GB (1) | GB1338066A (en) |
IT (1) | IT953525B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3447597C1 (en) * | 1984-12-28 | 1986-08-28 | Karl 7298 Loßburg Hehl | Injection molding unit for a plastic injection molding machine |
-
1970
- 1970-04-25 DE DE19702020337 patent/DE2020337A1/en active Pending
- 1970-12-01 GB GB551173A patent/GB1338066A/en not_active Expired
- 1970-12-17 AT AT1527270A patent/ATA15272A/en not_active IP Right Cessation
- 1970-12-17 AT AT15272A patent/AT328717B/en not_active IP Right Cessation
-
1972
- 1972-03-17 IT IT2201972A patent/IT953525B/en active
Also Published As
Publication number | Publication date |
---|---|
DE2020337A1 (en) | 1971-11-11 |
AT328717B (en) | 1976-04-12 |
ATA15272A (en) | 1975-06-15 |
IT953525B (en) | 1973-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |