GB2061808A - Mould-closing arrangement for injection moulding machines - Google Patents
Mould-closing arrangement for injection moulding machines Download PDFInfo
- Publication number
- GB2061808A GB2061808A GB8034598A GB8034598A GB2061808A GB 2061808 A GB2061808 A GB 2061808A GB 8034598 A GB8034598 A GB 8034598A GB 8034598 A GB8034598 A GB 8034598A GB 2061808 A GB2061808 A GB 2061808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- platen
- carrier
- movable
- closing
- 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.)
- Granted
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 25
- 239000000969 carrier Substances 0.000 abstract description 13
- 238000005452 bending Methods 0.000 description 10
- 238000000465 moulding Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
-
- 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
- B29C45/1751—Adjustment means allowing the use of moulds of different thicknesses
-
- 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
- B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
- B29C45/6714—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould
- B29C45/6728—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould the separate element consisting of coupling rods
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
A mould-closing arrangement for injection moulding machines has a base 1 with a fixed mould mounting platen 3 and movable mould mounting platen 2 moved by cylinder/piston units 4. The units 4 are external of the platens 2, 3 and diagonally opposite one another and each is mounted at the cylinder end upon the platen 3 by a pivot joint 6 in a carrier 15 rigidly connected to the platen 3. The free end of the piston rod 7 of each unit 4 is pivotally connected to a respective upright carrier 9 which is connected to one end of each of two vertically aligned force transmitting columns 5 which pass through the movable platen 2 and are operatively connected thereto. The other ends of the four columns 5 respectively co- operate, after the traverse of the movable platen 2, with closing cylinders 16, mounted on the fixed platen 3, for producing mould closing and clamping force. A device 14, 23, 27 is arranged on the movable platen 2 for adjusting the mould part installation spacing to accommodate moulds of different sizes. For controlling the mould- closing arrangement, signal receivers 10 are mounted on one of the carriers 9 and co-operate with a signal carrier 11 mounted on a support 12 fixed in the base frame 12. <IMAGE>
Description
SPECIFICATION
Mould-closing arrangement for injection moulding machines
This invention relates to a mould-closing arrangement for injection moulding machines, comprising two mould mounting platens, one of which is movable in relation to the other in the closing and opening direction of the mould by means of actuating cylinder/piston units.
It is known to dispose one or more actuating cylinders in the space behind the movable mould mounting platen. Arrangements of this kind are disclosed in German Auslegeschrift 1 136, 799, German Offenlegungsschrift 2 102 722 and in the Journal "Kunststoffe" (=
Plastics), Vol. 6, 1977, page 329. The location of the actuating cylinders behind the movable mould mounting platen has the disadvantages of the resulting very large overall lengths of the mould-closure arrangement and the additional necessity of supporting devices for the or each actuating cylinder. There is also the fact that a relatively large area is required for setting up such injection moulding machines.
To obviate these disadvantages, injection moulding machines have already been developed in which the actuating cylinders are disposed on the narrow end faces of the mould mounting platens, outside the mould space. The free end of the piston rod can be disposed either on the rigid or movable mould mounting platen, and the cylinder reversed accordingly. Such arrangements are disclosed in German Offenlegungsschrift 1 483 532 and German Offenlegungsschrift 1 912 240.
The disadvantage of such arrangements is that the bending of the mould mounting platens caused by the application of the mould closing force result in bending stresses on the actuating cylinders, so that their guides and seals are excessively stressed, the leakage of oil increases and therefore wear takes place prematurely.
German Democratic Republic Patent Specification 122 667 discloses an arrangement in which the actuating cylinders are disposed below the mould mounting platens, in the base of the injection moulding machine. The cylinder is connected to the base and the piston rod is connected to the movable mould mounting platen. One disadvantage of such arrangement is that the acceleration and deceleration of the displacing movement of the movable mould mounting platen produces forces which cause a tilting movement, so that the guideway wears prematurely.
All the arrangements hitherto disclosed also share the disadvantage that the stroke of the actuating cylinder must have the necessary mould opening path and in addition, for the adjustment of the mould part installation spacing, the amount of difference between its maximum and minimum installation spacing.
Consequently the length of the mould closing arrangement must be correspondingly large.
Moreover, when the installation spacing is altered, it is necessary to reposition the positioning system, consisting of signal carriers and signal receivers, for the signals to be delivered, in dependence on travel, by the position of the mould mounting platen, in order to control the operation cycle of the injection moulding machine. To obviate the necessity for repositioning the signal carriers and receivers when the installation spacing of the mould parts is changed, German Democratic Republic Patent Specification 91 552 already suggested that a relative movement between the movable mould mounting platen and the positioning system should be maintained by an additional drive during the adjustment of the installation spacing. However, such arrangement considerably increases costs.
In an earlier arrangement disclosed in Federal German Patent Specification 1 159 137, the actuating cylinders are also disposed laterally of the mould mounting platens. The cylinder is attached by a clamping device to one of the two mould mounting platens, the piston rod being attached to the other of the mould mounting platens. If the clamping device becomes loosened, the actuating cylinder can be displaced in the longitudinal direction therein, corresponding to the installation spacing to be adjusted. As a result there is no need for the additional extension of the stroke for the actuating cylinder, in order to adjust the difference in the various mould part installation spacings.However, the disadvantages of this arrangement are that it needs an uneconomically large amount of manual labour to loosen the clamping device and displace the actuating cylinders, the bending of the mould mounting platens is transmitted to the actuating cylinders, oil can be supplied only via movable lines (hoses), and moreover when the installation spacing of the mould parts has been changed, the signal carriers and receivers must be repositioned.
It is an object of the invention to shorten the overall length of the mould-closing arrangement, to reduce the labour and technical costs for adjusting the installation spacing of the mould parts, and to avoid bending stresses on the actuating cylinders.
The problem which the invention aims at solving consists in so disposing the actuating cylinders and the positioning device, dependent on the actuating path, without additional adjusting devices to produce a relative movement, that the actuating cylinders and the signal carrier of the positioning system are designed only for the stroke of the mould mounting platen, independently of any adjustment of the installation spacing, while during the application of the mould closing force the actuating cylinders are not subjected to bending stresses.
Accordingly, the present invention consists in a mould-closing arrangement for injection moulding machines, comprising two mould mounting platens of which one is fixed and the other is movable in relation to said one platen in the closing and opening direction of the mould, two actuating cylinder/piston units for moving said other platen towards and away from said one platen, said units being arranged externally of said mounting platens diagonally opposite one another and each being mounted at the cylinder end upon the fixed mould mounting platen by way of a pivot joint in a carrier rigidly connected to the fixed platen, the free end of the piston rod of each said actuating cylinder/piston unit being operatively connected to the movable platen, closing cylinders arranged in the fixed platen and each co-operating with one end of a force transmitting column, passing through the movable platen, for producing mould closing and clamping force after traverse of the movable platen towards the fixed platen, a signal carrier and a signal receiver unit co-operating with said carrier being provided for controlling the operational cycle of the mould-closing arrangement, said carrier and said receiver unit being mounted for movement relative to one another, and a device arranged on the movable platen for adjusting the mould part installation spacing.
Advantageously, four said force transmitting columns are provided each passing through the movable platen adjacent a corner thereof, a carrier member interconnecting each two of said columns at their ends opposite to said one end thereof, the free end of the piston rod of the respective cylinder/piston unit being connected via a further pivot joint to the respective carrier member, said signal carrier being mounted on a stationary support and said signal receiver unit being mounted on said carrier member for movement therewith relative to said signal carrier or vice versa.
Conveniently, four said force transmitting columns are provided each passing through the movable platen adjacent a corner thereof, the ends of said columns oppocite to said one end thereof being mounted in a supporting platen, and wherein the free end of the piston rod of the respective cylinder/piston unit is connected via a further pivot joint to a screwthreaded spindle, a nut with a toothed rim being arranged on each said spindle for effecting adjustment of the mould part installation spacing. Preferably, each said nut is received in a bearing box which is arranged on a locking device and rigidly connected via a spacing sleeve to the movable mould mounting platen, a vertically disposed carrier member being rigidly attached to the free end of each said spindle, each carrier member being received in a bush slideable on an adjacent column. Advantageously, one of said carrier members is provided with an extension on which is mounted said signal receiver unit or said signal carrier, the supporting platen receiving said signal carrier or said signal receiver unit.
In order that the invention may be more readily understood, reference is made to the accompanying drawings which illustrate diagrammatically and by way of example embodiments thereof, and in which Figure 1 is an elevation of a mould-closing arrangement with two mould mounting platens and force transmitting columns mounted cantilever fashion, in the opening position,
Figure 2 is an end view of the mouldclosing arrangement illustrated in Crig. 1,
Figure 3 shows the mould-closing arrangement in the closure position,
Figure 4 shows a mould-closing arrangement having columns which are mounted in both mould mounting platens and are borne in an additional supporting platen, and
Figure 5 shows an enlarged view of detail Z of Fig. 4 showing the bearing of the screw threaded spindle, which is connected to the actuating cylinder.
Referring to Fig. 1, the mould-closing arrangement comprises a base frame 1, which carries a movable mould mounting platen 2 and a fixed mould mounting platen 3.
Mounted externally of the fixed mould mounting platen in carriers 1 5, which have a pivot joint 6, at the cylinder end diagonally opposite are mould actuating cylinders 4. The carriers 1 5 are rigidly connected to the fixed mould mounting platen 3. At the piston rod end 7 the actuating cylinder 4 is mounted in a pivot joint 8 disposed at the end of a respective vertically disposed carrier 9 which is connected to each two vertically superimposed force transmitting columns 5. Arranged on one carrier 9 are signal receivers 10 operatively connected to a signal carrier 11 which is attached to a support 12. Conveniently the support 12 is screwed to the base frame 1 of the injection moulding machine.The columns 5, which are constructed in the form of clamping bushes, are mounted cantilever fash- ion in the movable mould mounting platen 2.
By means of an adjusting drive (not shown in detail), the columns 5 can be adjusted in the longitudinal direction via a column-nut combination 14 for adaptation to the mould part installation spacing.
By virtue of the carriers 1 5 being disposed on the fixed mould mounting platen 3 and the actuating cylinders 4 being supported in the joints 6 and 8 of the carriers s and 1 5, no bending stresses are transmitted to the actuating cylinders during the application of the mould closure force. As a result the actuating cylinders are protected against premature wear and oil leakages are low. Fig. 3 illus trates in an exaggered manner the operation of applying the mould closure force, with the resulting bending of the mould mounting platens; it can be seen that due to the pivotable bearing the actuating cylinders are not subjected to bending stress.
The actuating cylinders 4, extended while the movable mould mounting platen 2 is moved away and towards the platen 3, are supported by the carriers 15, thus reducing the bending of the actuating cylinders due to their own weight and the compressive loading occurring during the opening of the mould.
The carriers 9 disposed at the end of the piston rods 7 of the actuating cylinders 4 and rigidly connected to each two vertically aligned columns 5 receive the signal receivers, for example, limit switches.The signal carrier 11, which may be constructed as a cam bar, is mounted on the support 12 attached to the base frame 1. The signal receivers 10 may alternatively be disposed fixed and the signal carriers 11 connected to the movable columns 5. Such arrangement ensures that when a different mould part installation spacing is adjusted by the uniform axial displacement of the columns 5 in the movable mould mounting platen 2, referred to the closure position, the signal carrier 11 and signal receiver 10 maintian their position in relation to one another. The result is the elimination of any resetting of the operational cycle when the installation spacing is altered.
The arrangement of the invention also ensures that the signal carrier 11 and actuating cylinder 4 need be designed only for the stroke of the mould carrier. This has the advantage that the actuating cylinders can be constructed shorter and therefore with smaller diameters, and this saves a considerable amount of material. The elimination of the resetting of the signal carrier also considerably reduces the setting-up time for the adjustment of the mould when it is changed. Nor does the arrangement of the invention require any additional adjusting mechanism for producing a relative movement when the installation spacing is altered. According to such arrangement the displacing stroke can be reduced by about 500 mm in an injection moulding machine having a closure force of 630 Mp. The length of the actuating cylinder and the length of the signal carrier are reduced accordingly.
In another embodiment (Figs. 4 and 5), each of the force transmitting columns 5' is mounted at both ends respectively in the fixed mould mounting platen 3' and supporting platen 13'. The movable mould mounting platen 2' is moved on the columns 5' and the base frame 1'. The actuating cylinders 4' are mounted with provision for rotation via a pivot joint 6' in carriers 15' which are disposed rigidly on the fixed mould mounting platen.
The piston rods 7' are connected via pivot joints 8' to screw-threaded spindles 17. Nuts 18 with toothed rims 19 are disposed on the screwthreaded spindles 17. Bearing boxes 20 so engage around the nuts 18 that the nuts 18 can make rotary movements independently of the bearing boxes 20. However, translational movements are transmitted from the nuts 18 to the bearing boxes 20 and locking devices 21 connected therewith via spacing sleeves 22 to the movable mould mounting platen 2'. When the mould part installation spacing is altered, the toothed rims 19 are rotated via a common chain drive with the toothed rim 23' disposed on all four columns 5' in connection with a column-nut combination 14'.Due to the rotary movement transmitted to the column-nut combination 14', the latter also makes on the column screwthreading a traversing movement in relation to the non-rotatably mounted column 5' jointly with the movable mould mounting platen 2', the result being a change in the installation spacing. During this movement the position of the piston rod 7' and of the connected screwthreaded spindle 17 does not change, since it is secured against rotation by carriers 9' guided on the columns 5'. As a result the total stroke of the actuating cylinders 4' is available exclusively for the opening and closure of the mould, and the stroke and therefore the diameter of the actuating cylinders can be reduced.
The signal receiver 10' for the path-measuring system disposed on the carrier 9' is connected to the signal carrier 11', which is attached to the supporting platen 13. This arrangement ensures that on changing of the installation spacing, the length of the actuating cylinder and signal carrier need be designed only in accordance with the stroke which the mould mounting platen carries out for the opening and closure of the mould. There is no need for any further adjusting drive to produce a relative movement when the installation spacing of the mould parts is altered. The result of the bearing of the actuating cylinders 4' in the pivot joints 8', 15' is that no bending stresses are transmitted to them during the application of the mould closure force.
The operation of the mould-closing arrangement of the invention will be described hereinafter. When the mould is changed, the position of the movable mould mounting platen 2, 2' must be adapted to the new mould part installation spacing with the piston rods 7, 7' retracted. For this purpose the sprocket wheels 23 are driven via a chain 27 and the gearwheels 23' are driven simultaneously via a central gearwheel 26. From the sprocket wheels 23 and gearwheels 23' the rotary movement is transmitted to the column-nut combination 14,14', consisting of column nuts, clearance-equalising nut and pressure ring, which as a result move over their screwthreading longitudinally of the axis of the column. This is accompanied by the displacement of the movable mould mounting platen,
until it has reached the required position.
During this adjusting operation there is no change in the position of the piston rods 7, 7' and that of the signal receiver 10, 10', which are disposed fixed in relation to the piston rods 7, 7'. Nor is there any change in the position of the signal carrier 11 , ' disposed fixed to the base frame 1, 1'. As a result, when the mould is changed there is no need to alter the position of the cams which are disposed on the signal carrier 11, 11' and by means of which, for example, the operating signals for mould closing and clamping are initiated.
In the embodiment illustrated in Fig. 4 the piston rods 7' of the actuating cylinders are lengthened by screwthreaded spindles. During the adjustment operation, the nuts 18, which are disposed on the screw-threaded spindles
17 and transmit the forces from the actuating cylinders to the movable mould mounting platen 2', change their position together with the mould mounting platen in relation to the piston rods 7'. This is achieved by the rotary movement being transmitted during adjustment of mould part installation spacing from the gearwheels 23' to the toothed rims 19 attached to the nuts 18. The transmission ratio of the gearwheels 23' and 19 must correspond to the pitches of the screw-threadings on the columns 5' and the screwthreaded spindles 17. The mould is closed by pressurising the actuating cylinders 4 on the piston rod side.The movement of the piston rod is transmitted via the screw-threaded spindles 17, nuts 1 8, bearing boxes 20, locking device 21 and spacing sleeves 22 to the movable mould mounting platen 2'. Clamping takes place at the moment when the two halves of the mould contact one another or have moved together until a gap is left. At the same time the movable mould mounting platen 2' is connected mechanically via the columns 5' to the pistons of closing cylinders 16'. In the embodiment illustrated in Fig. 1, mould clamping is effected by a rotary movement of a bayonet-type closure (not shown in detail) disposed in the fixed mould mounting platen. In the embodiment illustrated in Fig.
4, mould clamping is effected by locking jaws 30 being pushed behind the column nut combination 14' (as shown). When the closing cylinders 16, 16' are then pressurised, the movable mould mounting platen 2, 2' is pulled by the columns 5, 5' in the direction of the fixed mould mounting platen 3, 3', the two halves of the mould are pressed together, and the injection moulding operation can begin. After the moulding has cooled, the halves of the mould are opened by the closing cylinders 16 being pressurised in the opposite direction, unlocking is effected and then the extension of the piston rods in the actuating cylinders 4, 4' opens the moulding wide enough for the moulding to be removed. The path-dependent signals required for this whole control process are obtained by the signal receiver 10, 10' moving in synchronous movement with the movable mould mounting platen, 2, 2' along the signal carrier 11, 4 11 and initiating the appropriate operating signals when it runs over the cams disposed adjustably thereof.
Claims (6)
1. A mould-closing arrangement for injection moulding machines, comprising two mould mounting platens of which one is fixed and the other is movable in relation to said one platen in the closing and opening direction of the mould, two actuating cylinder/piston units for moving said other platen towards and away from said one platen, said units being arranged externally of said mounting platens diagonally opposite one another and each being mounted at the cylinder end upon the fixed mould mounting platen by way of a pivot joint in a carrier rigidly connected to the fixed platen, the free end of the piston rod of each said actuating cylinder/piston unit being operatively connected to the movable platen, closing cylinders arranged in the fixed platen and each co-operating with one end of a force transmitting column, passing through the movable platen, for producing mould closing and clamping force after traverse of the movable platen towards the fixed platen, a signal carrier and a signal receiver unit co-operating with said carrier being provided for controlling the operational cycle of the mould-closing arrangement, said carrier and said receiver unit being mounted for movement relative to one another, and a device arranged on the movable platen for adjusting the mould part installation spacing.
2. A mould-closing arrangement according to claim 1 wherein four said force transmitting columns are provided each passing through the movable platen adjacent a corner thereof, a carrier member interconnecting each two of said columns at their ends opposite to said one end thereof, the free end of the piston rod of the respective cylinder/piston unit being connected via a further pivot joint to the respective carrier member, said signal carrier being mounted on a stationary support and said signal receiver unit being mounted on said carrier member for movement therewith relative tto said signal carrier or vice versa.
3. A mould-closing arrangement according to claim 1, wherein four said force transmitting columns are provided each passing through the movable platen adjacent a corner thereof, the ends of said columns opposite to said one end thereof being mounted in a supporting platen, and wherein the free end of the piston rod of the respective cylinder/ piston unit is connected via a further pivot joint to a screwthreaded spindle, a nut with a toothed rim being arranged on each said spindle for effecting adjustment of the mould part installation spacing.
4. A mould-closing arrangement according to claim 3, wherein each said nut is received in a bearing box which is arranged on a locking device and rigidly connected via a spacing sleeve to the movable mould mounting platen, a vertically disposed carrier member being rigidly attached to the free end of each said spindle, each carrier member being received in a bush slidable on an adjacent column.
5. A mould-closing arrangement according to claim 3 or 4, wherein one of said carrier members is provided with an extension on which is mounted said signal receiver unit or said signal carrier, the supporting platen receiving said signal carrier or said signal receiver unit.
6. A mould-closing arrangement for injection moulding machines, substantially as herein described with reference to and as shown in Figs. 1, 2 and 3 or Figs. 4 and 5 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD79216503A DD146404A1 (en) | 1979-10-29 | 1979-10-29 | FORMING DEVICE FOR INJECTION MOLDING MACHINES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2061808A true GB2061808A (en) | 1981-05-20 |
| GB2061808B GB2061808B (en) | 1983-06-02 |
Family
ID=5520788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8034598A Expired GB2061808B (en) | 1979-10-29 | 1980-10-28 | Mould-closing arrangement for injection moulding machines |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT371057B (en) |
| BG (1) | BG37254A1 (en) |
| CS (1) | CS229704B1 (en) |
| DD (1) | DD146404A1 (en) |
| DE (1) | DE3031640A1 (en) |
| FR (1) | FR2468457A1 (en) |
| GB (1) | GB2061808B (en) |
| IT (1) | IT1145294B (en) |
| SE (1) | SE433922B (en) |
| SU (1) | SU1097447A1 (en) |
| YU (1) | YU271580A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0504785A2 (en) * | 1991-03-18 | 1992-09-23 | Hemscheidt Maschinentechnik Schwerin GmbH & Co. | Closing device for an injection mould |
| EP0824058A1 (en) * | 1996-08-12 | 1998-02-18 | MANNESMANN Aktiengesellschaft | Two-plate injection moulding machine |
| EP0993928A3 (en) * | 1998-10-14 | 2000-10-18 | Fischer-W. Müller Blasformtechnik GmbH | Device for adapting a plastics processing machine, especially a blow moulding machine, to different mould sizes |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD278091A1 (en) * | 1988-12-19 | 1990-04-25 | Schwerin Plastmaschinen | CROSS-DRIVE DRIVE FOR A TRANSPORT CAR FOR AUTOMATIC SHAPE TOOL CHANGING IN INJECTION MOLDING MACHINES |
| DE4117640A1 (en) * | 1991-05-29 | 1992-12-03 | Rexroth Mannesmann Gmbh | Mould closing unit for injection moulding - has fixed and moving tool plates, end plate and ceramic-coated guide rods with gauge marks for inductive position sensing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1078289B (en) * | 1954-08-23 | 1960-03-24 | Fries Sohn J S | Die casting machine for metals |
| DE1127069B (en) * | 1958-04-24 | 1962-04-05 | Robert Hanning | Injection molding machine, especially for processing thermoplastics |
| GB998665A (en) * | 1963-11-29 | 1965-07-21 | Loewy Eng Co Ltd | Mould-closing device for injection moulding machines |
| CH418535A (en) * | 1965-01-29 | 1966-08-15 | Buehler Ag Geb | Die casting machine |
| NL6806238A (en) * | 1967-07-20 | 1969-01-22 | ||
| FR2033442A5 (en) * | 1969-02-25 | 1970-12-04 | Stephan Rech Meca Centre |
-
1979
- 1979-10-29 DD DD79216503A patent/DD146404A1/en not_active IP Right Cessation
-
1980
- 1980-08-22 DE DE19803031640 patent/DE3031640A1/en active Granted
- 1980-08-29 AT AT0438780A patent/AT371057B/en not_active IP Right Cessation
- 1980-09-10 CS CS806185A patent/CS229704B1/en unknown
- 1980-09-10 SU SU807771375A patent/SU1097447A1/en active
- 1980-09-12 BG BG8049040A patent/BG37254A1/en unknown
- 1980-09-24 FR FR8020519A patent/FR2468457A1/en active Granted
- 1980-10-23 YU YU02715/80A patent/YU271580A/en unknown
- 1980-10-27 SE SE8007538A patent/SE433922B/en not_active IP Right Cessation
- 1980-10-28 GB GB8034598A patent/GB2061808B/en not_active Expired
- 1980-10-29 IT IT50024/80A patent/IT1145294B/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0504785A2 (en) * | 1991-03-18 | 1992-09-23 | Hemscheidt Maschinentechnik Schwerin GmbH & Co. | Closing device for an injection mould |
| EP0504785A3 (en) * | 1991-03-18 | 1992-12-23 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co. | Closing device for an injection mould |
| EP0824058A1 (en) * | 1996-08-12 | 1998-02-18 | MANNESMANN Aktiengesellschaft | Two-plate injection moulding machine |
| EP0993928A3 (en) * | 1998-10-14 | 2000-10-18 | Fischer-W. Müller Blasformtechnik GmbH | Device for adapting a plastics processing machine, especially a blow moulding machine, to different mould sizes |
Also Published As
| Publication number | Publication date |
|---|---|
| CS229704B1 (en) | 1984-06-18 |
| GB2061808B (en) | 1983-06-02 |
| BG37254A1 (en) | 1985-05-15 |
| FR2468457A1 (en) | 1981-05-08 |
| DD146404A1 (en) | 1981-02-11 |
| IT8050024A0 (en) | 1980-10-29 |
| IT1145294B (en) | 1986-11-05 |
| DE3031640C2 (en) | 1989-05-24 |
| SE433922B (en) | 1984-06-25 |
| ATA438780A (en) | 1982-10-15 |
| YU271580A (en) | 1983-02-28 |
| SU1097447A1 (en) | 1984-06-15 |
| DE3031640A1 (en) | 1981-05-07 |
| SE8007538L (en) | 1981-04-30 |
| AT371057B (en) | 1983-05-25 |
| FR2468457B1 (en) | 1985-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19991028 |