US20040052893A1 - Closing device in an injection moulding machine for synthetic materials - Google Patents
Closing device in an injection moulding machine for synthetic materials Download PDFInfo
- Publication number
- US20040052893A1 US20040052893A1 US10/470,833 US47083303A US2004052893A1 US 20040052893 A1 US20040052893 A1 US 20040052893A1 US 47083303 A US47083303 A US 47083303A US 2004052893 A1 US2004052893 A1 US 2004052893A1
- Authority
- US
- United States
- Prior art keywords
- hollow
- shaft motor
- clamping device
- platen
- spindle
- 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.)
- Abandoned
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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
- B29C45/66—Mould opening, closing or clamping devices mechanical
- B29C45/661—Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping
-
- 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
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
- B29C2045/1794—Machine parts driven by an electric motor, e.g. electric servomotor by a rotor or directly coupled electric motor, e.g. using a tubular shaft motor
Definitions
- the invention relates to a clamping device according to the preamble of claim 1.
- EP 0658 136 B1 discloses a clamping unit for molding tools of injection molding machines, including a clamping system in the form of a toggle mechanism, disposed between the moving platen and an end platen, for displacing the moving platen.
- a clamping system in the form of a toggle mechanism, disposed between the moving platen and an end platen, for displacing the moving platen.
- Several so-called five-point toggle lever systems are coupled with a common crosshead.
- a threaded spindle is connected in fixed rotative engagement upon the crosshead and engages a nut which is immobile in axial direction but received in the end platen for rotation.
- the rotary drive is implemented by coupling the nut to a hollow shaft of an electric motor which is flange-mounted to the outside of the end platen.
- the hollow shaft is internally so dimensioned as to be suitable to easily receive the entire length of the threaded spindle, when the threaded spindle extends rearwards out of the nut.
- the toggle lever systems are in symmetric relationship to the force axis of the clamping unit, and the threaded spindle, the spindle nut and the electric motor with its hollow shaft are in alignment with the force axis of the clamping unit. A similar system is described in DE-PS 195 24 314 C1.
- the weight thereof When the hollow-shaft motor is secured to the crosshead, the weight thereof must be borne by the spindle, on one hand, and by the toggle mechanism, on the other hand. This has an adverse effect on the joints of the toggle mechanism. Moreover, the spindle may sag. This is especially true when high-power and accordingly heavy hollow-shaft motors are involved.
- the invention is based on the object to provide a clamping device of this type, which does not subject the spindle as well as the joints of the toggle mechanism to significant stress, even when constructed of short configuration and used with heavy hollow-shaft motors.
- the end platen has a cylindrical recess in which the hollow-shaft motor can move into.
- the structural length of the injection molding machine is reduced in any event by the thickness of the end platen.
- the spindle is arranged in a rotationally fixed manner.
- the spindle end, facing the moving platen, is hereby in engagement with the rotor of the hollow-shaft motor, advantageously via a nut, and the stator of the hollow-shaft motor is connected to the toggle mechanism.
- the motor runs, it moves axially and operates the toggle mechanism.
- the spindle is stationary and barely projects beyond the outer end of the end platen. This means that the structural length of the injection molding machine is essentially bounded by the end platen.
- the quality of control is significantly improved compared to a belt drive in which a belt acts as elastic element.
- a belt acts as elastic element.
- the drive system is faster because, despite higher mass inertia, the comparably smaller rotation speed enables to reach the target speed faster.
- the spindle can be guided through the end platen and secured in a rotationally fixed manner in an anchor plate.
- the spindle is connected in a rotationally fixed manner with the rotor of the hollow-shaft motor and meshes with a nut which is connected in a rotationally fixed manner with the end platen.
- the stator of the hollow-shaft motor is connected with the toggle mechanism.
- the nut connected to the hollow shaft and engaging the spindle, can be omitted.
- this nut has a significant moment of inertia, and thus constitutes a higher dynamic load in comparison to a rotatable spindle.
- the decrease of the dynamic load in the embodiment of the invention with rotatable spindle enables a quicker movement of the clamping device.
- the nut, connected in this embodiment in a rotationally fixed manner with the end platen, does not pose great demands as far as balancing is concerned.
- this alternative embodiment of the invention is especially advantageous.
- the hollow-shaft motor is either flange-mounted directly onto the crosshead or integrated therein, for example, by providing the crosshead with a recess for receiving the hollow-shaft motor.
- the stator may also be coupled directly to the toggle mechanism via suitable connecting elements.
- the end platen has a cylindrical prolongation for rotatable support of a sun wheel of an adjustment device of the end platen.
- the cylindrical prolongation affords the end platen with added stability.
- a sun wheel of steel and an end platen of spherulitic cast iron provide a good friction pair for a sliding bearing.
- only a minimal need for lubrication is required.
- FIG. 1 shows a cross section of a clamping device according to the invention
- FIG. 2 shows a variation of the clamping device according to the invention of FIG. 1 with rotatable spindle.
- FIG. 1 An example of the invention is illustrated in the attached FIG. 1.
- a fixed platen 11 Arranged on a machine bed 16 is a fixed platen 11 , whereby a moveable platen 12 is able to move axially relative to the fixed platen by a toggle mechanism 13 .
- the fixed platen 11 is connected via the machine bed 16 with an end platen 19 .
- a spindle 21 is guided with its end distal to the moving platen through the end platen 19 and connected in a rotationally fixed manner in an anchor plate 3 .
- a hollow-shaft motor 7 and axially movable on carrier arms 23 Arranged on the other end of the spindle 21 is a hollow-shaft motor 7 and axially movable on carrier arms 23 which are arranged on both sides of the spindle 21 and fixed in the end platen 19 so that in FIG.
- a spindle nut 5 is coupled with the hollow shaft or the rotor 6 of the hollow-shaft motor 7 and is in engagement with the spindle 21 .
- the stator 4 of the hollow-shaft motor 7 is flange-mounted to the toggle mechanism 13 . In this way, the functions of the crosshead and of the drive motor are united.
- FIG. 2 shows an alternative embodiment of the invention in which the spindle 21 is connected in a rotationally fixed manner with the rotor 6 and meshes with a nut 22 which is connected in a rotationally fixed manner to the end platen 19 .
- the stator 4 of the hollow-shaft motor 7 is connected to the toggle mechanism 13 .
- the spindle 21 and thus the hollow-shaft motor 7 moves axially as the rotor rotates.
- the clamping device is opened and closed, respectively, via the toggle mechanism 13 . When the clamping device opens, whereby the hollow-shaft motor 7 moves in the direction of the end platen 19 , the spindle 21 projects beyond the end platen 19 .
- carrier arm As carrier arm is provided here a carrier arm 24 arranged beneath the hollow-shaft motor 7 . This can be secured in the end platen 19 or—as shown here—can extend through the end platen 19 and be secured in the anchor plate 3 . Optionally, lateral as well as lower carrier arms 23 and 24 may be provided.
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)
Abstract
The invention relates to a clamping device for an injection molding machine for plastics, including a fixed platen (11) and an end platen (19) which is connected to a moving platen (12) by means of toggle mechanism (13). A hollow-shaft motor (7) cooperates with a spindle (21) and is arranged between the end platen (19) and the moving platen for operating the toggle mechanism. According to the invention, one or more carrier arms (23, 24) are arranged laterally to and/or beneath the hollow-shaft motor (7) for movable support of the hollow-shaft motor.
Description
- The invention relates to a clamping device according to the preamble of claim 1.
- EP 0658 136 B1 discloses a clamping unit for molding tools of injection molding machines, including a clamping system in the form of a toggle mechanism, disposed between the moving platen and an end platen, for displacing the moving platen. Several so-called five-point toggle lever systems are coupled with a common crosshead. A threaded spindle is connected in fixed rotative engagement upon the crosshead and engages a nut which is immobile in axial direction but received in the end platen for rotation. The rotary drive is implemented by coupling the nut to a hollow shaft of an electric motor which is flange-mounted to the outside of the end platen. The hollow shaft is internally so dimensioned as to be suitable to easily receive the entire length of the threaded spindle, when the threaded spindle extends rearwards out of the nut. The toggle lever systems are in symmetric relationship to the force axis of the clamping unit, and the threaded spindle, the spindle nut and the electric motor with its hollow shaft are in alignment with the force axis of the clamping unit. A similar system is described in DE-PS 195 24 314 C1.
- These systems have shortcomings relating to a comparably long construction of the clamping device because the electric motor is arranged outside the end platen and the inner dimension of the hollow shaft is suited to the spindle length.
- In accordance with U.S. Pat. No. 5,804,224, this drawback is eliminated by arranging the hollow-shaft motor either on the inner side of the end platen (U.S. Pat. No. 5,804,224, col. 3, lines 60 to 63) or to secure the hollow-shaft motor on the crosshead of the toggle mechanism (U.S. Pat. No. 5,804,224, FIG. 1).
- When the hollow-shaft motor is secured to the crosshead, the weight thereof must be borne by the spindle, on one hand, and by the toggle mechanism, on the other hand. This has an adverse effect on the joints of the toggle mechanism. Moreover, the spindle may sag. This is especially true when high-power and accordingly heavy hollow-shaft motors are involved.
- The invention is based on the object to provide a clamping device of this type, which does not subject the spindle as well as the joints of the toggle mechanism to significant stress, even when constructed of short configuration and used with heavy hollow-shaft motors.
- This object is realized in accordance with the invention by the features of claim 1. As the hollow-shaft motor is movably supported on carrier arms, the spindle and the joints of the toggle mechanism are effectively freed from a weight load and there is no restriction as far as the selection of the hollow-shaft motors is concerned.
- The subsequent claims set forth advantageous improvements of the invention.
- According to an advantageous configuration of the invention, the end platen has a cylindrical recess in which the hollow-shaft motor can move into. As a consequence of this improvement of the invention, the structural length of the injection molding machine is reduced in any event by the thickness of the end platen. The recognition to configure the end platen with a cylindrical recess in which the hollow-shaft motor can move into, realizes a significant shortening of the structural space.
- According to a preferred embodiment of the invention, the spindle is arranged in a rotationally fixed manner. The spindle end, facing the moving platen, is hereby in engagement with the rotor of the hollow-shaft motor, advantageously via a nut, and the stator of the hollow-shaft motor is connected to the toggle mechanism. As the motor runs, it moves axially and operates the toggle mechanism. In contrast thereto, the spindle is stationary and barely projects beyond the outer end of the end platen. This means that the structural length of the injection molding machine is essentially bounded by the end platen. The drawback of prior art injection molding machines with a clamping device driven by a spindle and a hollow-shaft motor which is flange-mounted to the outside of the end platen, to have a structural length which is greater than an injection molding machine with belt drive of the clamping device, is thus eliminated. The direct drive via a hollow-shaft motor and a spindle offers, however, many advantages in comparison with a transmission with toothed belt. This drive is safer in operation than a belt drive, which may fail, when the belt is ripped. The direct drive is service friendlier as a retensioning of the belt is eliminated. Compared to a belt drive, it is subjected to less dust because no dust can be encountered as a result of a belt drive. Moreover, it has a greater efficiency and does not cause rolling noises of the belt. The quality of control is significantly improved compared to a belt drive in which a belt acts as elastic element. As a consequence of the high stiffness of the spindle drive, no hysteresis exists. The drive system is faster because, despite higher mass inertia, the comparably smaller rotation speed enables to reach the target speed faster.
- According to a variation of the invention, the spindle can be guided through the end platen and secured in a rotationally fixed manner in an anchor plate.
- According to an alternative preferred embodiment of the invention, the spindle is connected in a rotationally fixed manner with the rotor of the hollow-shaft motor and meshes with a nut which is connected in a rotationally fixed manner with the end platen. The stator of the hollow-shaft motor is connected with the toggle mechanism. Compared to the first preferred embodiment of the invention, this has the drawback that the spindle is not rotationally fixed and stationary, but projects beyond the end platen, when the clamping device opens and the hollow-shaft motor moves in the direction of the end platen. Thus, the advantage of a smaller structural length is lessened again. The advantage in relation to the first preferred embodiment of the invention resides, however, in the fact that the hollow shaft can be directly connected with the spindle. As a consequence, the nut, connected to the hollow shaft and engaging the spindle, can be omitted. In view of its great mass and its great diameter, this nut has a significant moment of inertia, and thus constitutes a higher dynamic load in comparison to a rotatable spindle. The decrease of the dynamic load in the embodiment of the invention with rotatable spindle enables a quicker movement of the clamping device. The nut, connected in this embodiment in a rotationally fixed manner with the end platen, does not pose great demands as far as balancing is concerned. When especially high-quality injection molding machines are involved, in which the demand of space is secondary while very high dynamics should be realized, this alternative embodiment of the invention is especially advantageous.
- The hollow-shaft motor is either flange-mounted directly onto the crosshead or integrated therein, for example, by providing the crosshead with a recess for receiving the hollow-shaft motor. As an alternative, the stator may also be coupled directly to the toggle mechanism via suitable connecting elements. As a consequence of the invention, the reaction moment of the drive and the guidance of the crosshead can be realized by a single cost-efficient construction.
- According to an advantageous configuration of the invention, the end platen has a cylindrical prolongation for rotatable support of a sun wheel of an adjustment device of the end platen. The cylindrical prolongation affords the end platen with added stability. A sun wheel of steel and an end platen of spherulitic cast iron provide a good friction pair for a sliding bearing. Hereby only a minimal need for lubrication is required.
- Exemplified embodiments of the invention are shown in the drawings, in which:
- FIG. 1 shows a cross section of a clamping device according to the invention,
- FIG. 2 shows a variation of the clamping device according to the invention of FIG. 1 with rotatable spindle.
- An example of the invention is illustrated in the attached FIG. 1. Arranged on a
machine bed 16 is a fixedplaten 11, whereby amoveable platen 12 is able to move axially relative to the fixed platen by atoggle mechanism 13. Thefixed platen 11 is connected via themachine bed 16 with anend platen 19. Aspindle 21 is guided with its end distal to the moving platen through theend platen 19 and connected in a rotationally fixed manner in ananchor plate 3. Arranged on the other end of thespindle 21 is a hollow-shaft motor 7 and axially movable oncarrier arms 23 which are arranged on both sides of thespindle 21 and fixed in theend platen 19 so that in FIG. 1 only therear carrier arm 23 is partially visible. Aspindle nut 5 is coupled with the hollow shaft or therotor 6 of the hollow-shaft motor 7 and is in engagement with thespindle 21. Thestator 4 of the hollow-shaft motor 7 is flange-mounted to thetoggle mechanism 13. In this way, the functions of the crosshead and of the drive motor are united. - FIG. 2 shows an alternative embodiment of the invention in which the
spindle 21 is connected in a rotationally fixed manner with therotor 6 and meshes with anut 22 which is connected in a rotationally fixed manner to theend platen 19. Thestator 4 of the hollow-shaft motor 7 is connected to thetoggle mechanism 13. Thespindle 21 and thus the hollow-shaft motor 7 moves axially as the rotor rotates. The clamping device is opened and closed, respectively, via thetoggle mechanism 13. When the clamping device opens, whereby the hollow-shaft motor 7 moves in the direction of theend platen 19, thespindle 21 projects beyond theend platen 19. As carrier arm is provided here acarrier arm 24 arranged beneath the hollow-shaft motor 7. This can be secured in theend platen 19 or—as shown here—can extend through theend platen 19 and be secured in theanchor plate 3. Optionally, lateral as well aslower carrier arms - Position List
Injection Molding Machine 3 anchor plate 11 fixed platen 12 moving platen 13 toggle mechanism 16 machine bed 19 end platen 22 nut Drive 4 stator of the hollow- shaft motor 5 spindle nut 6 rotor of the hollow- shaft motor 7 hollow- shaft motor 21 spindle 23 lateral carrier arms 24 lower carrier arm
Claims (11)
1. Clamping device for an injection molding machine for plastics, comprising a fixed paten (11) and an end platen (19), which is connected via a toggle mechanism with a moving platen (12), wherein a hollow-shaft motor (7) interacts with a spindle (21) and is arranged between the end platen (19) and the moving platen for operating the toggle mechanism (13), characterized in that one or more carrier arms (23, 24) are provided laterally to and/or beneath the hollow-shaft motor (7) for movable support of the hollow-shaft motor.
2. Clamping device according to claim 1 , characterized in that the carrier arms (23, 24) are secured in the end platen (19).
3. Clamping device according to claim 1 or 2, characterized in that the carrier arms (23, 24) extend through the end platen (19) and are secured in an anchor plate behind the end platen.
4. Clamping device according to one of the claims 1 to 3 , characterized in that the end platen (19) has a cylindrical recess in which the hollow-shaft motor (7) can move into.
5. Clamping device according to one of the claims 1 to 4 , characterized in that the spindle (21) is arranged in a rotationally fixed manner, that the end of the spindle (21), facing the moving platen (12), is in engagement with the rotor (6) of the hollow-shaft motor (7), and that the stator (4) of the hollow-shaft motor is connected with the toggle mechanism (13).
6. Clamping device according to one of the claims 1 to 5 , characterized in that the spindle (21) is guided through an end platen (19) and secured in a rotationally fixed manner in an anchor plate (3).
7. Clamping device according to one of the claims 1 to 6 , characterized in that the toggle mechanism (13) is coupled to a crosshead, and that the crosshead has a recess for receiving the hollow-shaft motor (7).
8. Clamping device according to one of the claims 1 to 7 , characterized in that the toggle mechanism (13) is coupled directly to the stator (4) of the hollow-shaft motor (7).
9. Clamping device according to one of the claims 1 to 8 , characterized in that the stator (4) of the hollow-shaft motor (7) is movably supported on the carrier arms (23, 24).
10. Clamping device according to one of the claims 1 to 9 , characterized in that the moving platen (12) is movably guided on several columns, and that these columns serve as carrier arms (23, 24) for the hollow-shaft motor (7) or the stator (4) of the hollow-shaft motor (7).
11. Clamping device according to one of the preceding claims, characterized in that the end platen (19) has a cylindrical prolongation for rotatable support of a sun wheel of an adjustment device of the end platen (19).
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10107502.2 | 2001-02-15 | ||
DE2001107502 DE10107502A1 (en) | 2001-02-15 | 2001-02-15 | Closure system for a plastics injection molding machine has a non-rotating spindle connected to a rotor of a hollow shaft motor whose stator connects with a toggle lever platen closure mechanism |
DE2001130669 DE10130669A1 (en) | 2001-06-28 | 2001-06-28 | Closure system for a plastics injection molding machine has a non-rotating spindle connected to a rotor of a hollow shaft motor whose stator connects with a toggle lever platen closure mechanism |
DE10130669.5 | 2001-06-28 | ||
DE10152688.1 | 2001-10-19 | ||
DE2001152688 DE10152688A1 (en) | 2001-10-19 | 2001-10-19 | Closure system for a plastics injection molding machine has a non-rotating spindle connected to a rotor of a hollow shaft motor whose stator connects with a toggle lever platen closure mechanism |
PCT/EP2002/001617 WO2002064347A1 (en) | 2001-02-15 | 2002-02-15 | Closing device in an injection moulding machine for synthetic materials |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040052893A1 true US20040052893A1 (en) | 2004-03-18 |
Family
ID=27214299
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/470,833 Abandoned US20040052893A1 (en) | 2001-02-15 | 2002-02-15 | Closing device in an injection moulding machine for synthetic materials |
US10/470,832 Abandoned US20040047944A1 (en) | 2001-02-15 | 2002-02-15 | Closing device in an injection moulding machine for synthetic materials |
US10/470,834 Expired - Fee Related US6948925B2 (en) | 2001-02-15 | 2002-02-15 | Closing device in an injection moulding machine for plastics |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/470,832 Abandoned US20040047944A1 (en) | 2001-02-15 | 2002-02-15 | Closing device in an injection moulding machine for synthetic materials |
US10/470,834 Expired - Fee Related US6948925B2 (en) | 2001-02-15 | 2002-02-15 | Closing device in an injection moulding machine for plastics |
Country Status (5)
Country | Link |
---|---|
US (3) | US20040052893A1 (en) |
EP (3) | EP1361947B1 (en) |
AT (2) | ATE333975T1 (en) |
DE (2) | DE50207637D1 (en) |
WO (3) | WO2002064348A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104721053A (en) * | 2013-12-20 | 2015-06-24 | 菲特工程有限公司 | Tamping Punch Station And Method Of Filling Capsules In Tamping Punch Station |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002064348A1 (en) * | 2001-02-15 | 2002-08-22 | Mannesmann Plastics Machinery Gmbh | Closing device in an injection moulding machine for synthetic materials |
DE102004053855A1 (en) * | 2004-11-04 | 2006-05-11 | Demag Ergotech Gmbh | Injection molding machine with at least one direct drive |
CN101450523A (en) * | 2007-12-07 | 2009-06-10 | 联塑(杭州)机械有限公司 | Electric mode locking device |
JP5276953B2 (en) * | 2008-11-06 | 2013-08-28 | 東芝機械株式会社 | Clamping device and injection molding machine |
TWI382913B (en) * | 2010-09-01 | 2013-01-21 | Long Iong Wu | Ten-link type double-toggle mold clamping mechanisms |
US10052802B2 (en) * | 2015-10-20 | 2018-08-21 | Hwa Chin Machinery Factory Co., Ltd. | Electrical mold clamping apparatus of plastic injection molding machines |
Citations (4)
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US5585126A (en) * | 1992-08-25 | 1996-12-17 | Battenfeld Kunststoffmaschinen Ges.M.B.H. | Closing unit for form tools of an injection molding machine |
US5804224A (en) * | 1994-12-28 | 1998-09-08 | Fanuc Ltd | Driving apparatus for electrically-operated injection molding machine |
US6682334B2 (en) * | 1999-12-27 | 2004-01-27 | Mannesmann Plastics Machinery Gmbh | Closing unit for use in an injection molding machine for processing plastic material |
US6948925B2 (en) * | 2001-02-15 | 2005-09-27 | Mannesmann Plastics Machinery Gmbh | Closing device in an injection moulding machine for plastics |
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JPS61140363A (en) * | 1984-12-13 | 1986-06-27 | Toshiba Mach Co Ltd | Motor-driven injection molding machine |
DE59309279D1 (en) | 1993-03-20 | 1999-02-18 | Karl Hehl | Injection molding machine |
DE4313472C2 (en) * | 1993-04-24 | 1996-10-24 | Karl Hehl | Mold clamping unit for a plastic injection molding machine |
AT403136B (en) * | 1994-02-24 | 1997-11-25 | Engel Gmbh Maschbau | DEVICE FOR CLOSING MOLDS OF AN INJECTION MOLDING MACHINE |
JP2866314B2 (en) * | 1994-12-21 | 1999-03-08 | 住友重機械工業株式会社 | Mold clamping device |
KR100473926B1 (en) * | 1998-06-18 | 2005-03-07 | 스미도모쥬기가이고교 가부시키가이샤 | Motor-Driven Mold Clamping Device And Mold Clamping Method |
DE19831482C1 (en) * | 1998-07-14 | 2000-01-20 | Karl Hehl | Electrohydraulic pressure injection molding unit for e.g. plastic, ceramic and powders |
DE19847298C2 (en) * | 1998-10-14 | 2000-11-02 | Karl Hehl | Injection molding machine with a modular structure comprising several drive groups |
-
2002
- 2002-02-15 WO PCT/EP2002/001618 patent/WO2002064348A1/en not_active Application Discontinuation
- 2002-02-15 AT AT02719845T patent/ATE333975T1/en not_active IP Right Cessation
- 2002-02-15 WO PCT/EP2002/001616 patent/WO2002064346A1/en active IP Right Grant
- 2002-02-15 DE DE50207637T patent/DE50207637D1/en not_active Expired - Fee Related
- 2002-02-15 AT AT02722082T patent/ATE284300T1/en not_active IP Right Cessation
- 2002-02-15 EP EP02722082A patent/EP1361947B1/en not_active Revoked
- 2002-02-15 WO PCT/EP2002/001617 patent/WO2002064347A1/en not_active Application Discontinuation
- 2002-02-15 US US10/470,833 patent/US20040052893A1/en not_active Abandoned
- 2002-02-15 US US10/470,832 patent/US20040047944A1/en not_active Abandoned
- 2002-02-15 EP EP02700239A patent/EP1361945A1/en not_active Withdrawn
- 2002-02-15 EP EP02719845A patent/EP1361946B1/en not_active Expired - Lifetime
- 2002-02-15 US US10/470,834 patent/US6948925B2/en not_active Expired - Fee Related
- 2002-02-15 DE DE2002501729 patent/DE50201729D1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5585126A (en) * | 1992-08-25 | 1996-12-17 | Battenfeld Kunststoffmaschinen Ges.M.B.H. | Closing unit for form tools of an injection molding machine |
US5804224A (en) * | 1994-12-28 | 1998-09-08 | Fanuc Ltd | Driving apparatus for electrically-operated injection molding machine |
US6682334B2 (en) * | 1999-12-27 | 2004-01-27 | Mannesmann Plastics Machinery Gmbh | Closing unit for use in an injection molding machine for processing plastic material |
US6948925B2 (en) * | 2001-02-15 | 2005-09-27 | Mannesmann Plastics Machinery Gmbh | Closing device in an injection moulding machine for plastics |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104721053A (en) * | 2013-12-20 | 2015-06-24 | 菲特工程有限公司 | Tamping Punch Station And Method Of Filling Capsules In Tamping Punch Station |
Also Published As
Publication number | Publication date |
---|---|
US20040062831A1 (en) | 2004-04-01 |
WO2002064346A1 (en) | 2002-08-22 |
EP1361946A1 (en) | 2003-11-19 |
EP1361947A1 (en) | 2003-11-19 |
EP1361945A1 (en) | 2003-11-19 |
EP1361947B1 (en) | 2004-12-08 |
ATE284300T1 (en) | 2004-12-15 |
DE50207637D1 (en) | 2006-09-07 |
WO2002064347A1 (en) | 2002-08-22 |
EP1361946B1 (en) | 2006-07-26 |
DE50201729D1 (en) | 2005-01-13 |
WO2002064348A1 (en) | 2002-08-22 |
US20040047944A1 (en) | 2004-03-11 |
ATE333975T1 (en) | 2006-08-15 |
US6948925B2 (en) | 2005-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MANNESMANN PLASTICS MACHINERY AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FISCHBACH, GUNTHER;REEL/FRAME:014690/0751 Effective date: 20030728 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |