US5344299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin material supply apparatus for resin press molding machine
Assignee: Kobe Steel Ltd
•
Filing: 1992-04-06
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Granted: 1994-09-06
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Expires: 2012-04-06
Abstract
Abstract The present invention has a purpose to prevent leakage of resin material and disorder of cutting operation without increasing plate thickness of the cutter, thereby providing a resin material supply apparatus capable of suiting increase of resin material sheet size or higher back pressure. To this end, according to the present invention, there is provided a resin material supply apparatus and method for a resin press molding machine in which: resin material is extruded in a supply cylinder toward a die by a piston, and the molded resin material is cut by a cutter which slides along a front end surface of the die. Then, the cut resin material is supplied onto a metal mold, and new resin material is charged into the supply cylinder by pressing the cutter toward the die at a position that the cutter closes an opening of the die.
Inventors
- 👤 Naoki Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:11
CPC Classifications
B; B29; B29C; B29C31/00; B29C31/04; B29C31/042; B29C31/048; B29C31/06; B29C31/061; B29C31/063; B29C48/00; B29C48/03; B29C48/06; B29C48/12; B29C48/25; B29C48/36; B29C48/475; B29C43/00; B29C43/32; B29C43/34; B29C2043/3433; B29C2043/3444
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
A resin material supply apparatus for a resin press molding machine comprising: a supply cylinder including a piston for extruding resin material toward a metal mold; a die having an opening for forming the resin material extruded from the supply cylinder; a cutter device having a cutter cutting the molded resin material by sliding along a front end surface of the die; a charger for charging resin material into the supply cylinder; and a pressing device external of the supply cylinder for pressing the cutter toward the die when the cutter is at a position that the cutter closes the opening of the die.
Claim 2
Dependent Claim
104 words
A resin material supply apparatus for a resin press molding machine comprising: a supply cylinder including a piston for extruding resin material toward a metal mold; a die having an opening for forming the resin material extruded from the supply cylinder; a cutter device having a cutter cutting the molded resin material by sliding along a front end surface of the die; a charger for charging resin material into the supply cylinder; and a pressing device external of the supply cylinder for pressing the cutter toward the die when the cutter is at a position that the cutter closes the opening of the die.
Claim 3
Dependent Claim
25 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 1 in which said cutter moves in an up-and-down direction.
Claim 4
Dependent Claim
31 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 2 in which further comprising a cutter cylinder for sliding the cutter in the up-and-down direction.
Claim 5
Dependent Claim
53 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 1 in which said charge device supplying resin material is connected through an elbow to the supply cylinder, and includes a charge cylinder disposed in parallel with the supply cylinder and a piston accommodated in the charge cylinder.
Claim 6
Dependent Claim
28 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 1 in which said pressing device is constituted by a motor-driven screw mechanism.
Claim 7
Dependent Claim
27 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 1 in which said pressing device is constituted by a cam mechanism.
Claim 8
Dependent Claim
27 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 1 in which said pressing device is constituted by a pressing cylinder.
Claim 9
Dependent Claim
31 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 7 in which further comprising a cutter cylinder for sliding the cutter in an up-and-down direction.
Claim 10
Dependent Claim
49 words
A resin material supply apparatus for a resin press molding machine in accordance with claim 8 in which said cutter cylinder and the pressing cylinder are connected to a switching valve, and a sequence valve is interposed between a bottom side of the pressing cylinder and the switching valve.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |