Patent US4634366A successfully refreshed from Google Patents.
US4634366A
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Injection molding machine
Assignee: WENTWORTH MOLD Inc ELECTRA FORM INDUSTRIES DIVISION PRECISION MOLD DIVISION
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Filing: 1984-11-07
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Granted: 1987-01-06
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Expires: 2004-11-07
Abstract
Abstract An injection molding machine includes a platen having a plurality of regularly spaced mold element-receiving chambers adapted to receive any of a number of various mold elements substantially wholly within the stationary platen. A hot manifold system is included between the stationary platen and a plastics injector unit, which includes a plurality of blocks independently coupled to the fixed platen, each block having channels through which the plastics material can flow, the channels of adjacent blocks being coupled by a coupling unit. The machine is particularly designed for quick inexpensive mold changes, and has particular utility in laboratory testing of mold designs and small low-capacity production in satellite plants.
Inventors
- 👤 Philip L. Brun
- 👤 Stephen A. Bright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:13
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/72; B29C45/73; B29C45/26; B29C45/27; B29C45/2725; B29C45/2727; B29C45/28; B29C45/2806; B29C45/33; B29C45/40; B29C45/2737; B29C2045/274; B29C45/2738; B29K; B29K2105/00; B29K2105/25; B29K2105/253
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
146 words
A mold element for use in an injection molding machine wherein the mold element is received substantially wholly within a platen, said platen adapted for retaining a plurality of similarly configured mold elements, the mold element comprising a tubular body portion having a substantially closed end and an open end, an inside of the tubular body portion defining a molding cavity for receiving plastics material, cooling means comprising a plurality of separate, spaced parallel grooves on the outside of the tubular body portion, and retaining means for retaining the tubular body portion in fixed relation to the platen, the retaining means including a ring situated at the open end of, and unitary with, the tubular body portion, the ring having an outside diameter greater than the outside diameter of the tubular body portion, and means for coupling the ring to a forward face of the platen.
Claim 2
Dependent Claim
146 words
A mold element for use in an injection molding machine wherein the mold element is received substantially wholly within a platen, said platen adapted for retaining a plurality of similarly configured mold elements, the mold element comprising a tubular body portion having a substantially closed end and an open end, an inside of the tubular body portion defining a molding cavity for receiving plastics material, cooling means comprising a plurality of separate, spaced parallel grooves on the outside of the tubular body portion, and retaining means for retaining the tubular body portion in fixed relation to the platen, the retaining means including a ring situated at the open end of, and unitary with, the tubular body portion, the ring having an outside diameter greater than the outside diameter of the tubular body portion, and means for coupling the ring to a forward face of the platen.
Claim 3
Dependent Claim
35 words
The mold element of claim 1 wherein each of the plurality of separately, spaced parallel grooves defining the cooling means be in a plane normal to the axis of revolution of the tubular body portion.
Claim 4
Dependent Claim
96 words
The mold element of claim 1, wherein said platen is stationary in relation to a movable platen, said moveable platen being configured to carry a mold core that is insertable in the tubular body portion, and said forward face of said stationary platen, is positioned to confront the movable platen so that the mold element is insertable into the stationary platen through a space defined between the stationary platen and movable platen when said movable and stationary platens are separated, thereby permitting the mold element to be fastened to the stationary platen by the coupling means.
Claim 5
Dependent Claim
22 words
The mold element of claim 1, wherein the ring is formed to include at least one channel for selectively receiving cooling liquid.
Claim 6
Dependent Claim
49 words
A mold element for insertion into a platen of an injection molding machine, the mold element comprising a body portion having an inside wall defining a molding cavity for receiving plastics material and an outside wall configured to define a plurality of separate channels for selectively receiving cooling liquids.
Claim 7
Dependent Claim
49 words
A mold element for insertion into a platen of an injection molding machine, the mold element comprising a body portion having an inside wall defining a molding cavity for receiving plastics material and an outside wall configured to define a plurality of separate channels for selectively receiving cooling liquids.
Claim 8
Dependent Claim
53 words
The mold element of Claim 5, in combination with a platen, said platen comprising chamber means for receiving the mold element substantially wholly within the platen, and dispensing means for dispensing selected flows of cooling liquid into each of the separate outside wall channels of the old element disposed in the chamber means.
Claim 9
Dependent Claim
59 words
The mold element of claim 5, in combination with a platen said platen comprising chamber means for receiving the mold element substantially wholly within the platen, and a plurality of separate conduit means for delivering cooling liquid to each of the plurality of separate channels formed in the outside wall of the mold element disposed in the chamber means.
Claim 10
Dependent Claim
108 words
The combination of the mold element and platen of claim 7, wherein the chamber means is configured to guide the mold element along a substantially straight path during insertion of the mold element into the chamber means, each conduit means defines a cooling channel penetrating the platen to intersect the chamber means, each cooling channel is aligned within the platen to extend in a direction generally orthogonal to said straight path, and the separate channels formed in the outside wall of the mold element are situated in spaced-apart parallel relation to one another so that each conduit means is paired in fluid communication with a companion cooling channel.
Claim 11
Dependent Claim
120 words
A stationary platen for use in an injection molding machine between a plastics injector and a movable platen, the stationary platen comprising a generally rectangular block having a pair of parallel faces and having a plurality of regularly spaced mold element-receiving chambers extending through the platen between the pair of parallel faces, a plurality of separate cooling channels penetrating the block generally orthogonal to, and intersecting, each mold element-receiving chamber, means for securing mold elements substantially wholly within the block, manifold means fixed to a side of the platen in communiation with the plurality of separate cooling channels for distributing cooling liquid to certain cooling channels, and blocking means for modifying the flow of cooling liquid in selected cooling channels.
Claim 12
Dependent Claim
120 words
A stationary platen for use in an injection molding machine between a plastics injector and a movable platen, the stationary platen comprising a generally rectangular block having a pair of parallel faces and having a plurality of regularly spaced mold element-receiving chambers extending through the platen between the pair of parallel faces, a plurality of separate cooling channels penetrating the block generally orthogonal to, and intersecting, each mold element-receiving chamber, means for securing mold elements substantially wholly within the block, manifold means fixed to a side of the platen in communiation with the plurality of separate cooling channels for distributing cooling liquid to certain cooling channels, and blocking means for modifying the flow of cooling liquid in selected cooling channels.
Claim 13
Dependent Claim
28 words
The stationary platen of claim 9, further comprising a forward face confronting a movable platen, the mold elements being fastened to the forward face via the securing means.
Claim 14
Dependent Claim
27 words
The stationary platen of claim 9, further comprising means for coupling the manifold means to a face of the stationary platen for connection with a plastics injector.
Claim 15
Dependent Claim
126 words
A stationary platen for use in an injection molding machine between a plastics injector and a movable platen, the stationary platen comprising a generally rectangular block having a pair of parallel faces and having a plurality of regularly spaced mold element-receiving chambers extending through the platen between the pair of parallel faces, a plurality of separate cooling channels penetrating the block generally orthogonal to, and intersecting, each mold element-receiving chamber, means for securing mold elements substantially wholly within the block, and a plurality of spaced O-ring receiving grooves within each mold element-receiving chamber, one of the O-ring receiving grooves being situated between each of the plurality of separate cooling channels so that each cooling channel is substantially fluidly and thermally isolated from adjacent neighboring cooling channels.
Claim 16
Dependent Claim
126 words
A stationary platen for use in an injection molding machine between a plastics injector and a movable platen, the stationary platen comprising a generally rectangular block having a pair of parallel faces and having a plurality of regularly spaced mold element-receiving chambers extending through the platen between the pair of parallel faces, a plurality of separate cooling channels penetrating the block generally orthogonal to, and intersecting, each mold element-receiving chamber, means for securing mold elements substantially wholly within the block, and a plurality of spaced O-ring receiving grooves within each mold element-receiving chamber, one of the O-ring receiving grooves being situated between each of the plurality of separate cooling channels so that each cooling channel is substantially fluidly and thermally isolated from adjacent neighboring cooling channels.
Claim 17
Dependent Claim
28 words
The stationary platen of claim 12, further comprising a forward face confronting a movable platen, the mold elements being fastened to the forward face by the securing means.
Claim 18
Dependent Claim
129 words
A mold element inserted into a stationary platen of an injection molding machine, the stationary platen having a forward face confronting a movable platen, the mold element comprising an outer end formed to include an opening for receiving a mold core carried by the movable platen, a body portion having an inside wall defining a molding cavity in communication with the opening formed in the outer end and an outside wall configured to define a plurality of separate channels for selectively receiving flows of cooling liquid, means for coupling the flange to the forward face of the stationary platen to hold the mold element within the stationary platen so that the mold element is insertable into the stationary platen through a space definable between the stationary and movable platen.
Claim 19
Dependent Claim
129 words
A mold element inserted into a stationary platen of an injection molding machine, the stationary platen having a forward face confronting a movable platen, the mold element comprising an outer end formed to include an opening for receiving a mold core carried by the movable platen, a body portion having an inside wall defining a molding cavity in communication with the opening formed in the outer end and an outside wall configured to define a plurality of separate channels for selectively receiving flows of cooling liquid, means for coupling the flange to the forward face of the stationary platen to hold the mold element within the stationary platen so that the mold element is insertable into the stationary platen through a space definable between the stationary and movable platen.
Claim 20
Dependent Claim
22 words
The mold element of claim 14, wherein the flange is formed to include at least one channel for selectively receiving cooling liquid.
Claim 21
Dependent Claim
26 words
The mold element of claim 14, wherein the flange is defined by a collar extending in a radially outward direction away from the mold core-receiving opening.
Claim 22
Dependent Claim
26 words
The mold element of claim 14, wherein the flange includes a ring having an outside diameter greater than the outside diameter of the tubular body portion.
Claim 23
Dependent Claim
60 words
The mold element of claim 14, wherein the stationary platen is formed to include chamber means for receiving the body portion of the mold element substantially wholly within the stationary platen, and dispensing means for dispensing selected flows of cooling liquid into at least one of the plurality of separate channels formed in the outside wall of the body portion.
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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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |