US3668910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion handling apparatus
Assignee: GRANCO-CLARK Inc A CORP OF MI
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Filing: 1970-10-06
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Granted: 1972-06-13
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Expires: 1990-10-06
Abstract
Abstract An extrusion handling apparatus which grips the end of extruded products and stretches them as they are extruded from a die of an extrusion machine. The apparatus includes a clamping means for gripping the extruded products, the clamping means being mounted on rails to move linearly away from the extrusion die. Supports for the extruded products are mounted independently of the clamping means and synchronized to move with the clamping means beneath the extruded products and are vertically adjustable with respect to the clamping means to adjust the supports for different size extrusions. The clamping means have opposite jaws which close on the center line of the extruded products. The jaws are moved by a pneumatic, or other, fluid pressure system which is carried by a cart which supports the clamping means. The pneumatic pressure system is recharged by docking with a pressure source at one end of the travel of the clamping jaw cart. A shear press is mounted on a track for movement independent of the clamping means and has power means operably connected thereto for movement of the shear press away from the clamping means after cutting of the extrusion to permit gripping of the cut end of the extrusion without interference from the shear press.
Inventors
- 👤 Charles B Gentry
- 👤 Robert M Scanlon
- 👤 Jerome Rumery
- 👤 Howard L Mcdonald
- 👤 Larry G Keeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:05
CPC Classifications
B; B21; B21C; B21C35/00; B21C35/02; B21C35/03
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
156 words
An extrusion handling apparatus comprising: clamping means for engaging the ends of extruded products; means mounting said clamping means for movement between spaced points along a line; power means to move said clamping means between said points along said line, said power means including means to move said mounting means in at least one direction by applying a constant force thereto so as to pull extruded products from the die to a constant tension; support means structurally independent of said mounting means and movable along said line for supporting extruded products being pulled by said clamping means; means synchronizing the movement of said support means with the movement of said clamping means so that said support means moves along with said clamping means; and means for adjusting the height of said support means independently of said clamping means so as to accommodate extruded products of different dimension with respect to the center line of the die.
Claim 2
Dependent Claim
156 words
An extrusion handling apparatus comprising: clamping means for engaging the ends of extruded products; means mounting said clamping means for movement between spaced points along a line; power means to move said clamping means between said points along said line, said power means including means to move said mounting means in at least one direction by applying a constant force thereto so as to pull extruded products from the die to a constant tension; support means structurally independent of said mounting means and movable along said line for supporting extruded products being pulled by said clamping means; means synchronizing the movement of said support means with the movement of said clamping means so that said support means moves along with said clamping means; and means for adjusting the height of said support means independently of said clamping means so as to accommodate extruded products of different dimension with respect to the center line of the die.
Claim 3
Dependent Claim
47 words
An extrusion handling apparatus according to claim 1 wherein said clamping means comprises a pair of jaws, said mounting means includes a guide to close said jaws on the center line of an extrusion die and for moving each of said jaws away from said center line.
Claim 4
Dependent Claim
63 words
An extrusion handling apparatus according to claim 2 further comprising a fluid pressure means carried by said mounting means for actuating movement of said jaws toward and away from said center line, said fluid pressure means including a fluid pressure tank, and means for recharging said fluid pressure tank at at least one point along said line along which said clamping means moves.
Claim 5
Dependent Claim
29 words
An extrusion handling apparatus according to claim 1 wherein said mounting means includes wheels, and a track for said wheels are provided on either side of said support means.
Claim 6
Dependent Claim
75 words
An extrusion handling apparatus according to claim 4 wherein said support means includes a track having an upper portion and lower portion, said upper portion extends along said line of clamping means movement curving downwardly at a front portion of said line, and then extends rearwardly to join said lower portion, horizontal slats extend across said line, means slidably securing said slats in said track, and means rigidly spacing said slats a predetermined distances apart.
Claim 7
Dependent Claim
27 words
An extrusion handling apparatus according to claim 5 wherein said synchronizing means includes a connection between said support means and said mounting means of said clamping means.
Claim 8
Dependent Claim
129 words
An extrusion handling apparatus according to claim 5 wherein said height adjusting means comprises first and second horizontal support members beneath said track, said second horizontal support being rigidly joined to said track and mounted for vertical movement with respect to said first horizontal support member, said first horizontal support member being beneath said second horizontal support member and mounted for horizontal movement with respecT thereto, link members rotatably joined to said first and second horizontal support members that horizontal movement of said first horizontal support member causes a corresponding vertical movement of said second horizontal support member, thereby raising said support means for said extrusions, and power means for horizontally moving said first horizontal support member and for maintaining said first horizontal support member in selected horizontal positions.
Claim 9
Dependent Claim
153 words
An extrusion handling apparatus comprising: clamping means for engaging extruded products; means mounting said clamping means for movement between spaced points along a line; power means to move said clamping means between said points along said line, said power means including means to move said mounting means in at least one direction by applying a constant force thereto so as to pull extruded products from a die at a constant tension; support means movable along said line for supporting extruded products being pulled by said clamping means; means synchronizing the the of said support means with movement of said clamping means so that said support means moves with said clamping means; and means for activating the opening and closing of said clamping means, said actuating means including a fluid pressure actuation system carried by said mounting means; and means for recharging said fluid pressure system at at least one point along said line.
Claim 10
Dependent Claim
153 words
An extrusion handling apparatus comprising: clamping means for engaging extruded products; means mounting said clamping means for movement between spaced points along a line; power means to move said clamping means between said points along said line, said power means including means to move said mounting means in at least one direction by applying a constant force thereto so as to pull extruded products from a die at a constant tension; support means movable along said line for supporting extruded products being pulled by said clamping means; means synchronizing the the of said support means with movement of said clamping means so that said support means moves with said clamping means; and means for activating the opening and closing of said clamping means, said actuating means including a fluid pressure actuation system carried by said mounting means; and means for recharging said fluid pressure system at at least one point along said line.
Claim 11
Dependent Claim
48 words
An extrusion handling apparatus according to claim 8 wherein said clamping means comprises a pair of jaws, said mounting means includes means to guide said jaws to close on the center line of an extrusion die and for moving each of said jaws away from said center line.
Claim 12
Dependent Claim
137 words
An extrusion handling apparatus according to claim 8 wherein said fluid pressure actuation system includes a fluid pressure tank, a fluid pressure line leading from said tank, and a connector on the end of said fluid pressure line, said connector being rigidly fixed to said mounting means for said clamping means; and said recharging means includes a source of fluid pressure and a fitting engagable with said fluid pressure connector and operably connected to said source of fluid pressure, whereby fluid pressure is passed from said fluid pressure source to said tank when said fitting docks with said connector, said fitting being positioned at a terminal end of said line to dock and engage said actuator system connector and pass fluid pressure into said pressure tank when said mounting means reaches said terminal end of said line.
Claim 13
Dependent Claim
55 words
An extrusion handling apparatus according to claim 10 further comprising a shear press and a shear press support means at one end of said line; and wherein said fitting is fixed to said shear press support means, and said fitting docks with said connector as said clamping means engages extrusions cut by said shear press.
Claim 14
Dependent Claim
138 words
In combination with an extrusion pulling mechanism: clamping means for engaging extruded products; means mounting said clamping means for movement between spaced points along a line; power means to move said clamping means from a first point along said line to a second point along said line at a constant tension to apply a constant force to extruded products as they are extruded from a die; a shear press; means mounting said shear press at said first point along said line of said clamping means; power means to move said shear press away from said first point along said line; and synchronization means to move said shear press away from said first point after severing of extruded products to permit said clamping means to grip extruded products cut by said shear press without interference from said shear press.
Claim 15
Dependent Claim
138 words
In combination with an extrusion pulling mechanism: clamping means for engaging extruded products; means mounting said clamping means for movement between spaced points along a line; power means to move said clamping means from a first point along said line to a second point along said line at a constant tension to apply a constant force to extruded products as they are extruded from a die; a shear press; means mounting said shear press at said first point along said line of said clamping means; power means to move said shear press away from said first point along said line; and synchronization means to move said shear press away from said first point after severing of extruded products to permit said clamping means to grip extruded products cut by said shear press without interference from said shear press.
Claim 16
Dependent Claim
45 words
The combination of claim 12 wherein said shear press is movably mounted for movement along the direction of said line independent of said shear press power moving means, to thereby change the distances at which said extrusions are cut with respect to an extRusion die.
Claim 17
Dependent Claim
47 words
The combination of claim 12 wherein said shear press further comprises means to crush the leading end of said extruded products as said extruded products are being severed whereby the leading end of said extruded products is a predetermined height for easier reception by said clamping means.
Claim 18
Dependent Claim
89 words
In combination with an extrusion pulling apparatus having gripping jaws to receive the ends of extrusions from an extrusion die and means to move said gripping jaws away from said extrusion die at a constant tension; means between said extrusion die and said gripping jaws to crush the leading end of said extrusions to a predetermined height to be accepted by said gripping jaws, whereby said ends of said extrusions received by said gripping jaws are no larger than said predetermined height regardless of the height of said extrusions.
Claim 19
Dependent Claim
89 words
In combination with an extrusion pulling apparatus having gripping jaws to receive the ends of extrusions from an extrusion die and means to move said gripping jaws away from said extrusion die at a constant tension; means between said extrusion die and said gripping jaws to crush the leading end of said extrusions to a predetermined height to be accepted by said gripping jaws, whereby said ends of said extrusions received by said gripping jaws are no larger than said predetermined height regardless of the height of said extrusions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |