Injection unit comprising a spindle drive and hydraulic support

Details Injection unit comprising a spindle drive and hydraulic support Injection unit comprising a spindle drive and hydraulic support

2007-12-11

2007-12-11

Heitbrink, Tim (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

C425S149000, C425S150000, C425S214000, C425S574000, C425S583000, C425S587000

Reexamination Certificate

active

10573800

ABSTRACT:
Disclosed is an injection unit (1) for an injection molding machine, comprising a screw (4) that is driven by means of a spindle drive (18). The spindle drive (18) is driven via an electric motor (6). Additionally, a force that acts in an axial direction is transmitted to the screw of the injection unit (1) via a hydraulic cylinder (38). According to the invention, a pump (48, 68) is driven via the electric motor (6). A pressure chamber (44) of the cylinder (38) can be supplied with more pressurizing means via said pump (48, 68) than is needed during an axial displacement of the plunger (36).

REFERENCES:
patent: 5935494 (1999-08-01), Wurl et al.
patent: 6108587 (2000-08-01), Shearer et al.
patent: 6299427 (2001-10-01), Bulgrin et al.
patent: 6379119 (2002-04-01), Truninger
patent: 6555035 (2003-04-01), Iimura et al.
patent: 2002/0056935 (2002-05-01), Gruber et al.
patent: 2004/0065974 (2004-04-01), Dantlegraber
patent: 101 35 516 (2001-07-01), None
patent: 101 04 109 (2002-09-01), None
patent: 102 39 591 (2006-04-01), None
patent: 0 760 277 (1997-03-01), None
patent: 0 785 059 (1997-07-01), None
patent: A-2000-218666 (2000-08-01), None
patent: WO 02/04193 (2002-01-01), None
patent: WO 02/11969 (2002-02-01), None
“Grundlagen Der Hysraulischen Schaltungstechnik.” Olhydraulik Und Pneumatik, Krausskopf Verlag Fur Wirtschaft GMBH. Mainz. DE, vol. 37, No. 8. Aug. 1, 1993 p. 618-621 (XP 000413160).
“Grundlagen Der Hydraulischen Schaltungstechnik.” Olhydraulik Und Pneumatik, Vereingte Fachverlage, Mainz, DE, vol. 37, Jan. 1993. p. 677, 678, 680-68. (XP 000195240).
“Grundlagen Der Hydraulischen Schaltungstechnik.” Olhydraulik Und Pneumatik, Vereingte Fachverlage, Mainz, DE vol. 38, Jan. 1994 p. 24-27. (XP 000195265).
M. Johannaber, “Handbuch Spritzgiessen”, Injection-Moulding Manual, (Nov. 13, 2001) Carl Hanser Verlag, XP002323573 ISBN: 3-446-15632-1, pp. 887-903.

Affiliated with

Also associated with

Rating

Injection unit comprising a spindle drive and hydraulic support does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Injection unit comprising a spindle drive and hydraulic support, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection unit comprising a spindle drive and hydraulic support will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3842928