Clamping method of injection and compression molding machine

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2643287, 425150, 425575, B29C 4556

Patent

active

056098014

ABSTRACT:
A clamping method of an injection and compression molding machine, includes the steps of moving a movable mold 2 up to a pre-clamping position Sf located before a final clamping position Se, starting injection and filling of resin at the pre-clamping position Sf, and moving the movable mold 2 up to the final clamping position Se through high-pressure clamping; wherein the movable mold 2 is moved from a mold opening position So to the final clamping position Se and thereafter high-pressure empty clamping without injection and filling of resin is performed and a position to which the movable mold 2 is moved backward by a set value Xs from the position where the high-pressure empty clamping is performed is set as the pre-clamping position Sf, before moving the movable mold 2 from the mold opening position So to the pre-clamping position Sf. Thereby, an accurate movable-mold pre-clamping position is set and the weight of a molded part, the amount of gas to be released, and the transfer property are stabilized.

REFERENCES:
patent: 4281977 (1981-08-01), Farrell
patent: 4828769 (1989-05-01), Maus et al.
patent: 4832884 (1989-05-01), Speck et al.
patent: 4923383 (1990-05-01), Kurumaji et al.
patent: 5059365 (1991-10-01), Hertzer et al.
patent: 5354525 (1994-10-01), Fujimoto et al.
patent: 5370518 (1994-12-01), Sasaki et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Clamping method of injection and compression molding machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clamping method of injection and compression molding machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clamping method of injection and compression molding machine will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-440855

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.