GB1338066A - Injection moulding unit - Google Patents

Injection moulding unit

Info

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
Application number
GB551173A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1338066A publication Critical patent/GB1338066A/en
Expired legal-status Critical Current

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.
GB551173A 1970-04-25 1970-12-01 Injection moulding unit Expired GB1338066A (en)

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)

* Cited by examiner, † Cited by third party
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

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