1. Field
The present invention relates generally to fiber panels. More specifically, the present invention relates to systems, devices, methods, and computer-readable medium for forming fiber panels.
2. Background
The use of fiber material in the manufacture of architectural material is known. As one example, fiber material may be compressed into panels which can then be used for structural panels in building activities.
As will be appreciated by a person having ordinary skill in the art, conventional devices for forming fiber panels have may include a debater for cutting a fiber bale and/or a shredder for shredding the fiber material. Further, a conventional device may include a compression assembly having a ram for compressing the fiber material into a longitudinal panel member.
These conventional devices have exhibited several deficiencies. As one example, a density of the fiber panels, both within and between panels, may be inconsistent. The inconsistency may result from a greater or lesser amount of material being compressed by a reciprocating ram and then continuing down the curing table. The longer the length of compressed material for the panel members became, the more difficulty the ram had in moving the panel. This resulted in panels having lesser densities at the forward end of the panel and greater densities at the rearward end of the panel closer to the reciprocating ram.
The detailed description set forth below in connection with the appended drawings is intended as a description of exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention can be practiced. The term “exemplary” used throughout this description means “serving as an example, instance, or illustration,” and should not necessarily be construed as preferred or advantageous over other exemplary embodiments. The detailed description includes specific details for the purpose of providing a thorough understanding of the exemplary embodiments of the invention. It will be apparent to those skilled in the art that the exemplary embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the novelty of the exemplary embodiments presented herein.
Exemplary embodiments described herein relate to devices, systems, methods, and computer-readable media for forming fiber panels. As one example, a system may include a feed section for unrolling a round bale of material. The system may further include a compression section for receiving material from the unrolled bale of material. The compression section may include a press configured to apply a force to the material and a plurality of pistons to apply another force to the material. Additionally, the system may include an adjustable cutting section including a saw and configured to cut the material to form a panel having a desired length. As another example, a system may include a feed section for unrolling a cylindrical bale of material. Further, the system may include a two-stage compression section configured to cut and apply a compression force to material of the unrolled bale of material in at least two directions to form compressed material. Moreover, the system may include a controller configured for adjusting at least the feed section to control a density of the compressed material.
Further,
During a contemplated operation, system 100 may be configured to receive a bale of material (e.g., a round bale of straw), unroll the bale of material, and compress the material to form a panel having a desirable thickness, length, and width. For example only, system 100 may be configured to form a panel having a thickness of substantially 2.5 inches and a width of substantially 32 inches, which is substantially equal to a distance between studs in standard building construction. Further, system 100 may include a controller 105 (see
With specific reference to FIGS. 1 and 5-8, material receiving section 102, according to an exemplary embodiment of the present invention, will now be described. Material receiving section 102 includes a conveyor 202 for receiving a bale of material 204. As an example, bale of material 204 may comprise wheat straw, barley straw, rice straw, or any combination thereof. By way of example only, bale of material 204 may comprise a cylindrical-shaped bale of straw (i.e., a “round” bale), as specifically illustrated in
Material receiving section 102 may include a first structure 206, which has a fixed position, and a second structure 208, which may move relative to first structure 206 (i.e., in the directions indicated by arrows 210 and 211). Second structure 208 may include a plurality of arms 212 for lifting a bale of material 204 off of conveyor 202 and positioning the bale of material 204 onto another conveyor of feed section 104 (see
Material receiving section 102 may include a motor 214 for moving second structure 208 in either direction 210 or 211. Further, material receiving section 102 may include another motor 216 for powering the plurality of arms 212. It is noted that motor 214 and motor 215 may comprise hydraulic motors.
Feed section 104 will now be described with reference to FIGS. 1 and 9-12. Feed section 104 includes a first structure 220 having a fixed position. First structure 220 includes a plurality of rollers 230A-230D and a lower conveyor 232 (see
Additionally, feed section 104 includes a third structure 224 including a plurality of rollers 238A and 238B and configured to move relative to first structure 220 (i.e., in the directions indicated by arrows 226 and 228). Rollers 238A and 238B, along with lower conveyor 232, may stabilize the unrolled material for subsequent processing by compression section 106. It is noted that third structure 224 may include a conveyor driven by rollers 238A and 238B. It is further noted that some rollers of feed section 104 may comprise passive rollers and other rollers may comprise active rollers (e.g., rollers driven by a motor).
Accordingly to one exemplary embodiment, feed section 104 may be physically isolated from other sections (e.g., compression section 106) of system 100. Further, feed section 104, which may include a scale (e.g., feed section 104 may be positioned on a plurality of load cells), may be configured to weigh each bale of material 204, and determine the weight of material that has been fed into the remainder of system (i.e., the material that has been fed into compression section 106). More specifically, as material is rolled from a bale, the change (i.e., decrease) in the amount of weight of the bale may be determined. Alternatively, the weight of the material taken from a bale may be directly determined. As will be described more fully below, the weight of the material fed into compressed section 106 (i.e., the weight of compressed material) may be used to determine a density of the compressed material. Further, feed section 104 may include one or more sensors (e.g., a light sensor) for determining if a material from a bale of material is positioned on lower conveyor 232.
With reference now to FIGS. 1 and 13-16, compression section 106 will now be described. Compression section 106 may include a two-stage hydraulic compression system. More specifically, compression section 106 may include a hydraulic press 250 that is configured to cut material that has been unrolled from a bale, and apply a compressive force to the cut material. More specifically, press 250 may include a blade 254 (see
Primary platens 108 will now be described with reference to FIGS. 1 and 17-20. Primary platen includes a bottom platen 280 and a top platen 282. Further, primary platen 108 includes a plurality of electrical heating elements (not shown), which may be positioned within grooves 284 formed in and extending the width of bottom platen 280 and top platen 282. For example, each heating elements may comprise a tubular heating element, such as a “calrod.” As will be appreciated by a person having ordinary skill, the heating elements may provide heat to the compressed material passing therethrough. Each heating element may include an electrical connection for receiving electricity. It is noted that each heating element may be independently controllable. Stated another way, controller 105 (see
As will be appreciated by a person having ordinary skill, primary platen 108 may compact fiber material to form a dense panel and a width and a thickness of the panel may determined by dimensions of primary platen 108. Primary platen 108 may include a cover frame 286 positioned over top platen 282 and having an adequate weight to ensure top platen 280 remains in contact with bottom platen 282 while fiber material is passing therethrough.
Further, with reference now to FIGS. 1 and 21-24, adhesive applicator 110, secondary platens 112, and tension roller 114 will now be described. Adhesive applicator 110 is configured to apply an adhesive to one side of a piece of paper (i.e., paper from paper rolls 121) and, thereafter, apply the paper to compressed material. It is noted that adhesive applicator 110 may include mirroring application elements to simultaneously apply adhesive to one side of a first piece of paper and one side of a second piece of paper. For example only, an environmentally friendly, water based adhesive may be used.
Adhesive applicator 110 includes a first plurality of rollers 300 for contacting an upper piece of paper and a second plurality of rollers 302 for contacting a lower piece of paper. Further, adhesive applicator 110 includes a first glue roller pair 306 for applying adhesive to the upper piece of paper and a second glue roller pair 308 for applying adhesive to the lower piece of paper. It is noted that first glue roller pair 306 and second glue roller pair 308 may be controlled by controller 105 and, therefore, an amount of adhesive applied to the upper piece of paper and the lower piece of paper may be controllable. After an adhesive has been applied to the upper piece of paper and the lower piece of paper, the upper piece of paper (i.e., the side with the adhesive) may be applied to a side of the compressed material and the lower piece of paper (i.e., the side with the adhesive) may be applied to another, opposite side of the compressed material.
Secondary platens 112 include a bottom platen 322 and a top platen 320. Further, secondary platen 112 includes a plurality of electrical heating elements (not shown), which may be positioned within grooves 324 formed in and extending the width of bottom platen 322 and top platen 320. For example, each heating elements may comprise a tubular heating element, such as a “calrod.” As will be appreciated by a person having ordinary skill, the heating elements may provide heat to the fiber panel passing therethrough. Each heating element may include an electrical connection for receiving electricity. It is noted that each heating element may be independently controllable. Stated another way, controller 105 may be configured to individually and independently control a temperature of each heating element of the plurality of heating elements. As a result, a temperature profile of secondary platens 112 may be controllable. It is further noted that a temperature of secondary platens 112 may be varied depending on a type of material (e.g., rice straw, wheat straw, or barley straw) passing therethrough. Heat produced from the heating elements may assist in curing the adhesive applied to the top and bottom surfaces of the compressed fiber and to remove and/or reduce the “springback” inherent in the compressed fiber thereby contributing to a more stable panel member.
Tension rollers 114 may include one or more rollers 330 wherein each roller has a brake 332 associated therewith. More specifically, a brake 332A may control a speed of rotation of roller 330A and a brake 332B may control a speed of rotation of roller 330B. Stated another way, brake 332A may increase an amount of friction on roller 330A to decrease the rotational speed of roller 330A. Similarly, brake 332B may increase an amount of friction on roller 330B to decrease the rotational speed of roller 330B. On the other hand, brake 332A may decrease an amount of friction on roller 330A to increase the rotational speed of roller 330A. Similarly, brake 332B may decrease an amount of friction on roller 330B to increase the rotational speed of roller 330B. It is noted that brakes 332 may be controlled via controller 105. It is further noted that increasing the rotational speed of rollers 330A and 330B may increase the speed at which compressed material is conveyed through system 100. Further, decreasing the rotational speed of rollers 330A and 330B may decrease the speed at which compressed material is conveyed through system 100. Thus, a density of compressed material may be modified by adjusting tension rollers 114.
As noted above, a weight of compressed material within the curing section of system 100 may be determined. Further, because a width and a thickness of the compressed material are known, at any specific position along the curing section, a volume of the compressed material may be determined. Therefore, a density of the compressed material may be calculated. Additionally, by adjusting a rate at which the material is fed into compression section 106, by adjusting tension roller 114, or both, a density of the compressed material may be adjusted.
With reference again to
It is noted that the operation of material receiving section 102, feed section 104, and compression section 106 may be powered by, for example, hydraulic systems. Further, primary platens 108, adhesive applicator 110, secondary platens 112, tension roller 114, and cutting section 116 may be powered by pneumatic systems. The various components (i.e., sections) of system 100 may be disassembled from one another for shipping and then reassembled at their desired destination. Moreover, it is noted that each section of system may be configured to be movable by a forklift. Further, fiber panels formed by system may be used in, for example only, modular housing and other buildings (e.g., by Newcon, Newcor Steel, etc.).
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the exemplary embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the exemplary embodiments of the invention.
The various illustrative logical blocks, modules, and circuits described in connection with the exemplary embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The previous description of the disclosed exemplary embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these exemplary embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the exemplary embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Number | Date | Country | |
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61581568 | Dec 2011 | US |