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US3768352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cutting panels
Assignee: Halton City State Bank
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Filing: 1970-09-10
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Granted: 1973-10-30
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Expires: 1990-09-10
Abstract
Abstract The method and apparatus for efficiently cutting accurately sized panels in an unlimited combination of sizes and shapes from larger sheets. The sheets are automatically counted and stacked on a gauge table, the stack is clamped by jaws which establish a reference line relative to a cutting station, and the stack is advanced along the table for accurately dimensioned rip cuts. One or more of these cut stacks are then moved on a rip run-out unit to a cut-off infeed and gauge table where they are automatically aligned, clamped to establish a second reference line, and accurately advanced to a cut-off station where cross-cut sawing produces finished panels. The stacks are moved and gauged by either digital or analog hydraulic servo motors which accurately position the reference lines relative to the saw stations by controlled deceleration of the load to stop the stacks. At each saw station holddowns prevent sheet displacement as the saw traverses. Each saw automatically senses cutting load and returns to its initial position immediately upon finishing a cut. Linear saw speed is controlled as a function of saw load. Means are provided to automatically remove trim and scrap.
Inventors
- 👤 J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:07
CPC Classifications
B; B27; B27B; B27B5/00; B27B5/02; B27B5/06; B27B5/061; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2074; Y10T83/2081; Y10T83/707
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
126 words
A machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means to stack a plurality of sheets, clamp means for holding the stacked sheets to prevent relative displacement of the sheets, a cutting station, means for indexing the clamped stacks along a first axis to the cutting station in increments of predetermined distances, cutting means at the cutting station to separate the stack into sections along a cutting path transverse of the first axis, and run-out means adjacent the cutting station to receive scrap material and cut sections from the cutting station, said run-out means being operable in a first direction to convey the scrap for removal and operable in a second direction to convey the sections along a second axis.
Claim 2
Dependent Claim
126 words
A machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means to stack a plurality of sheets, clamp means for holding the stacked sheets to prevent relative displacement of the sheets, a cutting station, means for indexing the clamped stacks along a first axis to the cutting station in increments of predetermined distances, cutting means at the cutting station to separate the stack into sections along a cutting path transverse of the first axis, and run-out means adjacent the cutting station to receive scrap material and cut sections from the cutting station, said run-out means being operable in a first direction to convey the scrap for removal and operable in a second direction to convey the sections along a second axis.
Claim 3
Dependent Claim
72 words
The invention of claim 1 and further including: second clamping means to hold at least one cut section to prevent relative displacement of the sheets; a second cutting station along the second axis, means to index the clamped sections along the second axis to the second cutting station in increments of predetermined distances; and, means at the second cutting station to cut the sections into finished panels transversely of the second axis.
Claim 4
Dependent Claim
97 words
A machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means to stack a plurality of the sheets, clamp means for holding the stack to prevent relative displacement of the sheet, a cutting station, means to index the clamped stack along an axis to the cutting station in increments of predetermined distances, cutting means at the cutting station to separate the stack into sections along a cutting patch transverse of the axis, and hold-down means to hold the sheets against displacement on either side of the cutting means along the cutting path.
Claim 5
Dependent Claim
97 words
A machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means to stack a plurality of the sheets, clamp means for holding the stack to prevent relative displacement of the sheet, a cutting station, means to index the clamped stack along an axis to the cutting station in increments of predetermined distances, cutting means at the cutting station to separate the stack into sections along a cutting patch transverse of the axis, and hold-down means to hold the sheets against displacement on either side of the cutting means along the cutting path.
Claim 6
Dependent Claim
89 words
The invention of claim 3 wherein the hold-down means includes means to support the stack on one side thereof along the cutting path, and a pair of hold-down members, each member mounted for movement to and from the other side of the stack along a respective side of the cutting path, and means to control movement of the members to hold the stack against the support means as the cutting means is operating, and to release the members for indexing movement of the stack after the cut is made.
Claim 7
Dependent Claim
191 words
In a machine for forming and cutting accurately dimensioned panels from sheets of material comprising the combination of means for positioning a plurality of sheets in a stack, clamping means for gripping a margin of the stack to preclude relative displacement of the sheets, means for indexing the stack along a first axis, a cutting station on the first axis for cutting the stack along a path lateral of the first axis to separate the stack into sections, gripping means for gripping a margin of at least one cut section to preclude relative displacement of the sheets in a cut stack, means for indexing the cut stack along a second axis disposed at about 90* to the first axis, a cutting station on the second axis for cutting the thus cut stack along a path laterally of the second axis to separatE each section into panels, guide means adjacent the inner section of the two axes including a fence mounted for movement to and from the cut section in parallel alignment with respect to the second axis, and means to move the fence to the sections to create parallel alignment thereof.
Claim 8
Dependent Claim
191 words
In a machine for forming and cutting accurately dimensioned panels from sheets of material comprising the combination of means for positioning a plurality of sheets in a stack, clamping means for gripping a margin of the stack to preclude relative displacement of the sheets, means for indexing the stack along a first axis, a cutting station on the first axis for cutting the stack along a path lateral of the first axis to separate the stack into sections, gripping means for gripping a margin of at least one cut section to preclude relative displacement of the sheets in a cut stack, means for indexing the cut stack along a second axis disposed at about 90* to the first axis, a cutting station on the second axis for cutting the thus cut stack along a path laterally of the second axis to separatE each section into panels, guide means adjacent the inner section of the two axes including a fence mounted for movement to and from the cut section in parallel alignment with respect to the second axis, and means to move the fence to the sections to create parallel alignment thereof.
Claim 9
Dependent Claim
33 words
The structure of claim 5 further characterized in that said last-mentioned means is constructed and arranged to move the fence to the section as they move in the direction of the second axis.
Claim 10
Dependent Claim
45 words
The invention of claim 5 wherein the guide means includes at least a four-bar linkage device having a guide fence as one link movable in parallel relationship with the second axis to align common side edges of the sections with respect to the second axis.
Claim 11
Dependent Claim
138 words
A machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means for positioning a plurality of sheets in a stack, gripping means for clamping a marginal edge of the stack to prevent relative displacement of the sheets, means for indexing the stack along an axis, a cutting station on the axis, and a cutter mounted for traversing cutting movement along a cutting path at right angles to the axis, means to traverse the cutter back and forth along the cutting path, and control means for sensing the cutting of the material to operate the traversing means for cutting from an initial position and constructed to return the cutter along the cutting path to the initial position when the cutter finishes a cut through the stack without completing its full travel across the axis.
Claim 12
Dependent Claim
138 words
A machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means for positioning a plurality of sheets in a stack, gripping means for clamping a marginal edge of the stack to prevent relative displacement of the sheets, means for indexing the stack along an axis, a cutting station on the axis, and a cutter mounted for traversing cutting movement along a cutting path at right angles to the axis, means to traverse the cutter back and forth along the cutting path, and control means for sensing the cutting of the material to operate the traversing means for cutting from an initial position and constructed to return the cutter along the cutting path to the initial position when the cutter finishes a cut through the stack without completing its full travel across the axis.
Claim 13
Dependent Claim
43 words
The invention of claim 8 and further characterized in that the cutting means includes means to move the cutter away from cutting relationship with the material during return traversing of the cutter to permit simultaneous indexing of the stack for subsequent cutting thereof.
Claim 14
Dependent Claim
133 words
In a machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means for positioning a plurality of sheets in a stack, means for gripping a margin of the stack to preclude relative displacement of the sheets in the stack, means for indexing the stack along an axis to a cutting station, the gripping means including a plurality of clamps laterally spaced across the axis, each clamp including upper and lower jaw means adapted to grip the marginal edge of the stack, and separate power means for operating at least one jaw of each gripping means so that the gripping means may be operated independently of each other, allowing some to be operative and others to be deenergized dependng upon the width of the particular stack to be cut.
Claim 15
Dependent Claim
133 words
In a machine for cutting accurately dimensioned panels from sheets of material comprising the combination of means for positioning a plurality of sheets in a stack, means for gripping a margin of the stack to preclude relative displacement of the sheets in the stack, means for indexing the stack along an axis to a cutting station, the gripping means including a plurality of clamps laterally spaced across the axis, each clamp including upper and lower jaw means adapted to grip the marginal edge of the stack, and separate power means for operating at least one jaw of each gripping means so that the gripping means may be operated independently of each other, allowing some to be operative and others to be deenergized dependng upon the width of the particular stack to be cut.
Claim 16
Dependent Claim
50 words
The invention of claim 10 and further including a gauge table for supporting the stack prior to and during clamping, said jaw means being disposed below the table prior to clamping to clear the stack, and means to operate the jaw means above the table and stack for said clamping.
Claim 17
Dependent Claim
151 words
The invention of claim 10 wherein second clamping means comprises upper and lower jaw means, the upper jaw means movable in relationship to the lower jaw means to grip respective top and bottom portions of the cut sections, the upper jaw means having a nose portion, and control means for moving the upper jaw means from a retracted position to an intermediate position with its nose portion in abutting relationship with cut section end surfaces, and to a raised position vertically clearing the upper sheet of the cut sections, the control means further moving the clamping means along the second axis for nudging the end surfaces into alignment with the upper nose portion in said intermediate position, and operable to move the clamping means further forward along the second axis with the upper jaw means in said raised position into overlapping clamping relationship with the trailing edge of said cut sections.
Claim 18
Dependent Claim
99 words
For use in a panel cutting machine in which sheets of material are cut along a path transversely of a gauging axis of the machine, comprising the combination of: a carriage; a cutter blade rotatably mounted on the carriage; means to traverse the carriage back and forth across the gauge axis to move the blade in its path; means on the carriage to drive the cutter blade; and, control means to simultaneously operate the cutter motor and traverse the carriage along the path for cutting, and to return the carriage to its initial position when the cut is completed.
Claim 19
Dependent Claim
99 words
For use in a panel cutting machine in which sheets of material are cut along a path transversely of a gauging axis of the machine, comprising the combination of: a carriage; a cutter blade rotatably mounted on the carriage; means to traverse the carriage back and forth across the gauge axis to move the blade in its path; means on the carriage to drive the cutter blade; and, control means to simultaneously operate the cutter motor and traverse the carriage along the path for cutting, and to return the carriage to its initial position when the cut is completed.
Claim 20
Dependent Claim
83 words
The invention of claim 13 and further including: an arbor housing pivotally connected at one end to the carriage, with the blade rotatably mounted on the other end of the housing; actuating means on the carriage operatively connected with the housing to pivot the blade to a material engaging position and to a retracted position clear-ing the material; and, the control means operating the actuator to retract the blade during return of the carriage to permit indexing of the stack passed the blade.
Claim 21
Dependent Claim
78 words
The invention of claim 13 and further including means to mount the carriage for movement along the cutting path; a reversible motor mounted in driving engagement with the carriage to traverse the same along the path; and, control means sensing cutting of the material to drive the carriage motor at a preselected speed as a function of load during cutting, and to reverse the motor for returning the blade at a maximum speed after the cut is completed.
Claim 22
Dependent Claim
34 words
The invention of claim 13 and further characterized in that the control means sensing cutting of the material operates the motor to return the cutter to its initial position immediately upon completing a cut.
Claim 23
Dependent Claim
92 words
The structure of claim 13 further characterized by and including means for sensing the load on the cutter and constructed so that as soon as the cutter completes its cut of the stack of sheets and the load goes off of the cutter blade, movement of the carriage will be reversed to return it to its initial position and, at the same time, the cutter blade will be moved out of the path of the just cut panel so that the new surfaces will not be frayed by the returning cutter blade.
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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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |