GB1371198A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1371198A – Clamping unit for the casting mould of an injection moulding machine
– Google Patents

GB1371198A – Clamping unit for the casting mould of an injection moulding machine
– Google Patents
Clamping unit for the casting mould of an injection moulding machine

Info

Publication number
GB1371198A

GB1371198A
GB4737671A
GB4737671A
GB1371198A
GB 1371198 A
GB1371198 A
GB 1371198A
GB 4737671 A
GB4737671 A
GB 4737671A
GB 4737671 A
GB4737671 A
GB 4737671A
GB 1371198 A
GB1371198 A
GB 1371198A
Authority
GB
United Kingdom
Prior art keywords
cylinders
fluid
mould
piston
valve
Prior art date
1970-10-17
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
GB4737671A
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.)
1970-10-17
Filing date
1971-10-12
Publication date
1974-10-23

1970-10-17
Priority claimed from DE19702051083
external-priority
patent/DE2051083A1/en

1971-01-28
Priority claimed from DE19712103926
external-priority
patent/DE2103926A1/en

1971-10-12
Application filed by Individual
filed
Critical
Individual

1974-10-23
Publication of GB1371198A
publication
Critical
patent/GB1371198A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

B29C45/64—Mould opening, closing or clamping devices

B29C45/67—Mould opening, closing or clamping devices hydraulic

B29C45/6764—Mould opening, closing or clamping devices hydraulic using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement

Abstract

1371198 Injection moulding machines K HEHL 12 Oct 1971 [17 Oct 1970 28 Jan 1971] 47376/71 Heading B5A In an hydraulic clamping device for a two part mould (not shown) comprising a movable mould carrier 51 attached to the piston-rods 52, 53 of first cylinders 126 to which a fixed mould carrier 50 is attached, each cylinder 126 contains a piston 54, 55 dividing the cylinder into two chambers 57, 78 or 58, 79 which are interconnected by a channel 83 containing a shut-off valve 73, each piston has an annular seal 80 engaging the bore of its cylinder 126, second cylinders 102 are fastened coaxially with the first cylinders and each contains a piston 521 which is connected to move with a piston 54 and which forms a larger diameter extension of a piston 52, and an hydraulic drive including a pump alternatingly supplies fluid at a pressure in a relatively low pressure range and in a relatively high pressure range, the first cylinders being supplied with fluid in the low pressure for mould closing and in the high pressure range for mould clamping, the shut-off valve being open during mould opening and closing and closed during mould clamping, and the annular seals being substantially undistorted by the fluid in the low pressure range but being compressed by fluid in the high pressure range. To open the mould fluid is pumped at low pressure through line 69 into chambers 76 of the second cylinders moving pistons 521 and thus pistons 54, 55 to the left. Fluid passes from the interconnected chambers 57, 58 through the open valve 73 to the chambers 78, 79 which are also interconnected. The reduction in the overall fluid space in cylinders 126 due to the larger diameter of the pistons 521 which replace the piston-rods 521 causes fluid to be discharged from cylinders 126 through valve 67 and line 70 to a reservoir. A valve may be provided so that during the opening stroke the line 70 may be connected to the line 69 instead of the reservoir, thus all the cavities of the first and second cylinders are interconnected and fluid displaced from cylinders (126) assists in filling cavities 76. In this case the opening force is reduced since the effective piston area is equal to the cross-sectional area of the piston-rod 52. The higher opening force is preferable when moulding items which resist mould opening, e.g. containers formed on cores. To close the mould fluid is pumped at low pressure through line 70 into the cavities of the cylinders 126 while the cavities 76 of the cylinder 102 are discharged through valve 66 and line 69 to the reservoirs. Both cavities of each cylinder 126 are at the same pressure since the valve 73 is open, thus the pistons 54, 55 are moved to the right due to the difference in the effective area of the opposite sides of the pistons. When the mould is closed valve 73 is closed and the pump supplies fluid at a higher pressure to the chambers 57, 58 of cylinders 126. The fluid pressure in the other chambers 78, 79 of these cylinders is kept low by the adjustable pressure relief valve 75 leading to the reservoir. In the embodiments the different pressure ranges (values are quoted) are provided by using an electrically driven pump (not shown) which operates at a low pressure when providing a high output but produces a higher pressure when providing a low output. Two of the four cylinders 126 are provided with second cylinders 102 and one of the others carries an extension 531 to which is attached an arm 95 carrying cams 96, 97 to operate limit switch 94. The moving carrier 51 has an arm 85 carrying cams 87 (only one shown) which directly operate flow control valves 66, 67 to determine the rate of opening and closing the mould. A cam 101 connected to a sliding guard 82 also operates valves 66, 67 to block the flow of fluid when the guard is not in position. The annular seal 80 comprises a sealing ring 801 between two woven rings 80111 and two plastics rings 81. High pressure displaces a plastic ring 81 and compresses the rings 801 and 80111. Reference is made to Specification 1,371,199.

GB4737671A
1970-10-17
1971-10-12
Clamping unit for the casting mould of an injection moulding machine

Expired

GB1371198A
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

DE19702051083

DE2051083A1
(en)

1970-10-17
1970-10-17
Hydraulic mould mechanism – using high and low pressure systems of eg 100-250 and 4-10 atmos for plastics, elastomers or metals

DE19712103926

DE2103926A1
(en)

1971-01-28
1971-01-28
Mould clamping unit – for injection moulding machine with cylinders fed by pump system alternately delivering at low press

Publications (1)

Publication Number
Publication Date

GB1371198A
true

GB1371198A
(en)

1974-10-23

Family
ID=25759915
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB4737671A
Expired

GB1371198A
(en)

1970-10-17
1971-10-12
Clamping unit for the casting mould of an injection moulding machine

Country Status (6)

Country
Link

US
(1)

US3720061A
(en)

CA
(1)

CA952666A
(en)

CH
(1)

CH528967A
(en)

FR
(1)

FR2111494A5
(en)

GB
(1)

GB1371198A
(en)

NL
(1)

NL7114146A
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CN113165241A
(en)

2018-10-05
2021-07-23
阿博格有限公司
Clamping unit for an injection molding machine and method for locking a force transmission element

Families Citing this family (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US20190126438A1
(en)

2017-10-26
2019-05-02
Everite Machine Products Co.
Clamping Device System

1971

1971-09-16
CH
CH1355771A
patent/CH528967A/en
not_active
IP Right Cessation

1971-10-12
GB
GB4737671A
patent/GB1371198A/en
not_active
Expired

1971-10-14
NL
NL7114146A
patent/NL7114146A/xx
unknown

1971-10-18
FR
FR7137341A
patent/FR2111494A5/fr
not_active
Expired

1971-10-18
CA
CA125,382A
patent/CA952666A/en
not_active
Expired

1971-10-18
US
US00189977A
patent/US3720061A/en
not_active
Expired – Lifetime

Cited By (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CN113165241A
(en)

2018-10-05
2021-07-23
阿博格有限公司
Clamping unit for an injection molding machine and method for locking a force transmission element

CN113165241B
(en)

2018-10-05
2023-03-28
阿博格有限公司
Clamping unit for an injection molding machine and method for locking a force transmission element

Also Published As

Publication number
Publication date

CH528967A
(en)

1972-10-15

CA952666A
(en)

1974-08-13

FR2111494A5
(en)

1972-06-02

NL7114146A
(en)

1972-04-19

US3720061A
(en)

1973-03-13

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