US4286648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for operating an injection cylinder of a molding machine
Assignee: Ube Corp
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Filing: 1980-07-10
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Granted: 1981-09-01
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Expires: 2000-07-10
Abstract
Abstract Apparatus for moving an injection cylinder of a molding machine between an injection position and a teeming position comprises a drive means, a link mechanism disposed between a pin on the side of the injection cylinder and a stationary pin secured to a lower platen so as to be expanded and collapsed by the drive means, a cam plate secured to oppose the side of the injection cylinder and provided with guide slot comprised of a longitudinal slot parallel with the axis of the injection cylinder when it is in the injection position and an inclined slot contiguous with the longitudinal slot, a first roller mounted on the side of the injection cylinder to be moved along the guide slot in accordance with the operation of the link mechanism, a guide member including a guide slot for moving the injection cylinder in the axial direction at the injection position, and a second roller positioned in the guide slot to act as a center of swinging of the injection cylinder.
Inventors
- 👤 Takahiko Takeshima
- 👤 Motozo Kawashima
- 👤 Masayuki Nishimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:14
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/08; B22D17/12; B22D17/20; B22D17/2015; B22D17/30; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18952; Y10T74/1896; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
308 words
In a molding machine of the type comprising spaced apart first and second stationary platens, a stationary die secured to said first platen, a movable die which cooperates with the stationary die to mold molten metal, an injection cylinder disposed between the second stationary platen and the stationary and movable die for driving an injection plunger, and an injection sleeve disposed in front of the injection cylinder, said injection plunger being slidable in said injection sleeve, wherein the molten metal is injected when axes of the injection cylinder and of the molten metal passage align with each other, and the molten metal is teemed into the injection cylinder when the axis of the injection cylinder is out of alignment with the axes of the stationary and movable dies, an apparatus for moving the injection cylinder between the injection position and the teeming position, which comprises: a drive means (20); a link mechanism (16,17) disposed between a first pin (13) on the side of the injection cylinder (7) and a stationary second pin (15) secured to the second platen (3) so as to be expanded and collaped by the drive means (2); a cam plate (24) secured to oppose the side of the injection cylinder and including a guide slot (27) comprised of a longitudinal slot (25) parallel with the axis of the injection cylinder when it is in the injection position and an inclined slot (26) contiguous with the longitudinal slot; a first roller (28) secured to the side of the injection cylinder (7) to be movable along the guide slot (27); a guide member provided with a slot (30) for moving the injection cylinder in the axial direction in the injection position; and a second roller (31) positioned in the slot of the guide member to act as a center of swinging motion of the injection cylinder.
Claim 2
Dependent Claim
308 words
In a molding machine of the type comprising spaced apart first and second stationary platens, a stationary die secured to said first platen, a movable die which cooperates with the stationary die to mold molten metal, an injection cylinder disposed between the second stationary platen and the stationary and movable die for driving an injection plunger, and an injection sleeve disposed in front of the injection cylinder, said injection plunger being slidable in said injection sleeve, wherein the molten metal is injected when axes of the injection cylinder and of the molten metal passage align with each other, and the molten metal is teemed into the injection cylinder when the axis of the injection cylinder is out of alignment with the axes of the stationary and movable dies, an apparatus for moving the injection cylinder between the injection position and the teeming position, which comprises: a drive means (20); a link mechanism (16,17) disposed between a first pin (13) on the side of the injection cylinder (7) and a stationary second pin (15) secured to the second platen (3) so as to be expanded and collaped by the drive means (2); a cam plate (24) secured to oppose the side of the injection cylinder and including a guide slot (27) comprised of a longitudinal slot (25) parallel with the axis of the injection cylinder when it is in the injection position and an inclined slot (26) contiguous with the longitudinal slot; a first roller (28) secured to the side of the injection cylinder (7) to be movable along the guide slot (27); a guide member provided with a slot (30) for moving the injection cylinder in the axial direction in the injection position; and a second roller (31) positioned in the slot of the guide member to act as a center of swinging motion of the injection cylinder.
Claim 3
Dependent Claim
37 words
The apparatus as defined in claim 1 wherein the injection sleeve is mounted in front end of the injection cylinder through a frame and a tip of the injection plunger is normally inserted into the injection sleeve.
Claim 4
Dependent Claim
20 words
The apparatus according to claim 1 wherein the guide member is secured to a lower end of the injection cylinder.
Claim 5
Dependent Claim
18 words
The injection apparatus according to claim 1 wherein the guide member is secured to the second stationary platen.
Claim 6
Dependent Claim
39 words
The apparatus according to claim 1 wherein the first and second stationary platens are interconnected by a plurality of columns (4), a bracket (23) is secured between the columns and the cam plate (24) is secured to the bracket.
Claim 7
Dependent Claim
17 words
The apparatus according to claim 1 wherein the first roller is coaxial with the first pin (13).
Claim 8
Dependent Claim
18 words
The apparatus according to claim 1 wherein the second roller is coaxial with the stationary second pin (15).
Claim 9
Dependent Claim
67 words
The apparatus according to claim 1 wherein said link mechanism comprises a first link (16) with one end pivotally connected to the first pin (13), and second link (17) with one end pivotally connected to the second pin (15) and wherein the other ends of the first and second links are interconnected by a third pin and the second drive means is connected to the second link.
References Cited (Backward Citations)
US1222786A
Cited
US4088178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |