This invention relates to an apparatus used in the manufacture of a panel of individual cellular compartments from an elongate sheet of flexible material, wherein the individual cellular compartments may then be filled with form and/or resin and/or other material to form a rigid or semi-rigid panel.
Panels formed from parallel, tubular, honeycomb or other geometrically shaped cells have been made and proposed for use in a wide variety of applications. Such panels may be formed through the manufacturing of a core formed from a series of parallel, adjacent cells, wherein the core is to be later filled with form and/or resin and/or other material to add rigidity, compressive strength, thermal insulating capacity, etc. If desired, the upper and lower surface of the core may be covered with protective coatings, sheets, or resinous materials. The cellular compartments themselves may be formed from a wide variety of materials, including paper, aluminum, various types of plastic materials, fibreglass or other synthetic matting or woven materials. A panel of individual cellular compartments, and a composite material formed from such a panel, is described in Canadian Patent 2,639,673.
While others have proposed a variety of different mechanisms and methods for manufacturing such panels, it will be appreciated that in many instances the methods of manufacturing can be complex or laborious, and the throughput of a manufacturing process relatively low.
Accordingly, in one of its aspects the invention provides An apparatus for the manufacture of a panel of individual cellular compartments from an elongate sheet of flexible material, the apparatus comprising first and second rod banks, each of said rod banks including a base and a plurality of elongate and parallel rods, said bases oriented in a spaced apart and generally parallel configuration, said rods arranged adjacently in a row along each respective base and generally equally spaced apart from one another on said respective base, said rods having a first end secured to said respective base and a second end, said rods oriented generally perpendicular to said respective bases with said second ends of said rods of each base facing in opposite directions; a feed head, said feed head reciprocally moveable back and forth longitudinally and generally parallel along said rod banks, when removing in a first direction, said feed head applying the flexible material about the exterior surfaces of said rods of one of said rod banks, when moving in a second opposite direction said feed head applying the flexible material about the exterior surfaces of said rods of the other of said rod banks to thereby apply sequential layers of the flexible material to the exterior surface of the rods of said first and second rod banks in an alternating fashion, said sequential layers of flexible material secured to one another at points of contact along the length of said rods to form elongate, generally parallel, conjoined, cellular compartments such that successive rows of conjoined compartments form a panel.
In a further aspect the invention provides an apparatus for the manufacture of a panel of individual cellular compartments from an elongate sheet of flexible material, the apparatus comprising an upper and a lower rod bank, each of said rod banks including a generally horizontal base and a plurality of parallel and vertically oriented rods, said rods generally equally spaced apart and arranged adjacently in a row along each respective base, said rods having a first end secured to said respective base and a second end, said second ends of said rods of each base facing in opposite directions; a feed head, said feed head reciprocally moveable back and forth longitudinally and generally parallel along said rod banks, when removing in a first direction, said feed head applying the flexible material about the exterior surfaces of said rods of one of said rod banks, when moving in a second opposite direction said feed head applying the flexible material about the exterior surfaces of said rods of the other of said rod banks to thereby apply sequential layers of the flexible material to the exterior surface of the rods of said upper and lower rod banks in an alternating fashion, said sequential layers of flexible material secured to one another at points of contact along the length of said rods to form elongate, generally parallel, conjoined, cellular compartments such that successive rows of conjoined compartments form a panel.
Further aspects of the invention will become apparent from the following description taken together with the accompanying drawings.
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings which show exemplary embodiments of the present invention in which:
The present invention may be embodied in a number of different forms. The specification and drawings that follow describe and disclose some of the specific forms of the invention.
In the attached drawings,
From an understanding of the invention as described in the paragraphs that follow, it will also be appreciated that the core shown in
The structure and operation of an apparatus constructed in accordance with an embodiment of the invention will now be described in future detail with reference to
Throughout the attached figures, there is shown an embodiment of an apparatus 3 used for the manufacture of a panel of individual cellular compartments from an elongate sheet of flexible material 100, an example of such a panel being shown in
As shown in the attached drawings, bases 9 and 10 are themselves elongate with their respective rods arranged in a row along their longitudinal axis. Further, bases 9 and 10 are oriented in a spaced apart and generally parallel relationship to one another. Rods 11 and 12 are oriented generally perpendicularly to their respective bases with the second or outer ends of the rods of each base facing in opposite directions. As will become more apparent from a thorough understanding of the invention, rod bank cycling mechanism 8 is used to repeatedly move the first and second rod banks through a first and then a second cycle to permit the application of flexible material alternately to the rods of each respective bank.
One particular embodiment of apparatus 3 and its operation will now be discussed in further detail with specific reference to the attached figures. In the attached figures, apparatus 3 is configured to construct a panel 1 in a generally horizontal plane. To that end, bases 9 and 10 are generally horizontally oriented with first rod bank 6 comprising an upper rod bank and second bank 7 comprising a lower rod bank. Rod bank cycling mechanism 8 is also a generally horizontally configured structure to cycle the upper and lower rod banks through their various positions. In this configuration, feed head 5 is reciprocally movable back and forth, longitudinally and generally horizontally, along and parallel to the rod banks. The feed head is moved through the use of a feed head drive mechanism 17 that is comprised generally of a set of parallel rails 18 to which a feed head platform 20 is movably secured. In this instance, a linear actuator 19 drives the feed head horizontally in a reciprocal manner back and forth along the rod banks. It will, however, be appreciated that other forms of drive mechanisms could equally be used to accomplish the same function.
As feed head 5 is moved along the rod banks, the feed head will apply the flexible material about the exterior side surfaces of the rods of one of the rod banks. When the feed head is moved in the opposite direction, it will apply the flexible material about the exterior surface of the rods of the other rod bank, to thereby apply sequential layers of the flexible material about the exterior surface of rods of the first and then the second rod banks in an alternating fashion. To accomplish such an application of flexible material, feed head 5 includes a first toothed roller 21 and a first adhesive applicator/heat applicator 22, together with a second tooth roller 23 and a second adhesive applicator/heat applicator 24. The choice of whether an adhesive applicator or heat applicator is utilized will depend upon the nature of the flexible material that is being applied about the surface of the rods.
As sequential layers of flexible material are applied to the rods, there will be points of contact between each adjacent layer in (in this instance) a vertical direction. In some instances the application of an adhesive to the flexible material along such points of contact will be required in order to cause the material to adhere together forming elongate, generally parallel, conjoined, cellular compartments that ultimately form panel 1. In other instances, the flexible material may be a heat sealable material such that a heat applicator, as opposed to an adhesive applicator, may be utilized. In those instances, the heat applicator can apply heat (most commonly) through directing heated air to the flexible material in order to raise the temperature of the material at the points of contact to a sufficient level to cause a heat bonding or heat welding.
Feed head 5 will also preferably include a series of rollers 25 that will direct the flexible material through the feed head in an appropriate manner to enable the feed head to apply the material to the surface of one of the rod banks. Rollers 25 also help to maintain the orientation and the tension on the flexible material, which would typically be stored on a large roll (not shown) situated adjacent to apparatus 3. It should be noted that for ease of comprehension, the flexible material has been eliminated from
As the feed head is moved parallel to the rod bank, first tooth roller 21 will effectively press the material against the exterior surfaces of the individual rods and force material into the longitudinal spacing between adjacent rods. In the embodiment of the invention depicted in the drawings, the flexible material is a semi-rigid, heat bondable, material, meaning that the first and second adhesive applicators/heat applicators are heat applicators that blow heated air against both the rods and the material to cause the material to be heated to a point where material in contact is heat sealed or heat welded together. The semi-rigid nature of the material permits the material to generally retain the shape of the exterior surface of the rods after being pressed against the rods by the toothed roller.
With reference to
The operation of the toothed rollers will not only form the flexible material about the exterior surfaces of the rods to effectively create cellular compartments 2, but will also cause adjacent layers of the flexible material to come into contact at the points where they can be bonded together (in this case, through the application of heat). Once the feed head has returned to the left hand end of the rod banks, second toothed roller 23 and second heat applicator 24 will be withdrawn into their waiting or standby positions to once again permit the rod banks to cycle through their respective movement. That movement will generally involve lower bank 7 being moved in a downward direction and away from upper rod bank 6, until the outer ends 16 of the rods 12 of lower rod bank 7 clear the outer ends 14 of rods 11 of the upper rod bank 6. The lower rod bank is then moved outwardly toward feed head 5 and upper rod bank 6 is moved rearwardly away from feed head 5, after which the lower rod bank 7 is elevated to permit its rods 12 to be located horizontally in front of the rods of upper rod bank 6. The position of the rod banks and the feed head will at that point be returned to that of the starting position of apparatus 3 as shown in
As mentioned, feed head 5 is preferably moved laterally along the face of the rod banks through the use of linear actuators 19. In a similar manner, the cycling of the upper and lower rod banks between their various positions may be carried out through the use of a series of linear actuators or servo drive systems that move a pair of rod bank rails 28 and 29 that cause the upper and lower rod banks to cycle in their desired manner. Alternately, the rod bank cycling mechanism may be a cam drive system. Preferably, the movement of all of the component parts (including the cycling of the rod banks, the movement of the drive head and the movement of the first and second tooth rollers and first and second adhesive applicators/heat applicators) is controlled through a microprocessor control that can be programmed according to a desired speed, for use with a particular form of flexible material, etc.
Accordingly, there is provided an apparatus that is used in the manufacture of a panel of individual cellular compartments from an elongate sheet of flexible material. Through the use of rods 11 and 12 of a consistent size, apparatus 3 is capable of producing adjacent cellular compartments having a consistent size and configuration. Apparatus 3 is sufficiently automated to permit the construction of panel 1 with little supervision or human intervention. Its microprocessor control permits the operating parameters and speed of the apparatus to be readily modified or changed.
It is to be understood that what has been described are the preferred embodiments of the invention. The scope of the claims should not be limited by the preferred embodiments set forth above, but should be given the broadest interpretation consistent with the description as a whole.
Number | Date | Country | |
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62270091 | Dec 2015 | US |