Duct Reinforcement Rod And Fabrication Apparatus

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This invention relates in general to a duct reinforcement rod and fabrication apparatus, and offers more particularly with a duct reinforcement rod and fabrication apparatus which will increase the structural stability of ductwork whereas decreasing fabrication time and part expense.

BACKGROUND OF THE INVENTION

Ductwork is utilized to facilitate the heating, ventilation and cooling of varied buildings, each residential and business. The ductwork typically includes particular person duct sections which are then coupled collectively to kind a steady, largely airtight duct for conveying a transferring mass of air.

The duct sections are typically made from sturdy, but relatively gentle, material such as sheet metallic, or the like. It is a vital design characteristic that the duct remain as lightweight as doable in order to minimize the scale and weight of fasteners and other structural elements required to assist the ductwork, as well as sustaining materials and fabrication costs of the ductwork itself at cheap costs.

Commonly utilized ductwork usually have rectangular, circular or oval cross sections, and are often manufactured and equipped in pre-reduce lengths or sections with transversely outwardly protruding interconnection flanges, offered at opposite longitudinal ends of the section, to facilitate interconnecting duct sections at a job site and thus type the completed air conveying ducts of desired lengths.

Whatever the scale or shape of the ductwork, the comparatively small thickness of the partitions of the ductwork, as compared to its cross-sectional dimensions, outcomes within the duct walls being reasonably versatile. Standard ductwork could therefore experience large, possibly destructive and oftentimes loud structural deformations if static or dynamic air stress differentials between the interior and the exterior of the ductwork exceeds a predetermined threshold value. For that reason, mechanical engineering standards, in addition to most building codes, require that certain ductwork be strengthened in opposition to enlargement and/or collapse.

One known reinforcement mechanism for ductworks is shown in FIG. 1 and includes a threaded tie rod 2 oriented between opposite planar sides of a rectangular duct 4. Fastened, internal washers 6 are disposed adjoining the inside aspect of the opposing duct partitions four, whereas exterior washers 8 are disposed on the exterior of the duct walls 4 in matching relation to each other. As proven in FIG. 1, a threaded nut 10 is screwed down towards each of the exterior washers 8 to safe the reinforcing tie rod in position.

There are several variations of the reinforcing mechanism shown in FIG. 1 and these variations might also include rubber o-rings or other elastic sealing units disposed between the washers and the duct partitions. Moreover, it is usually recognized to change the mounted, internal washers 6 with threaded nuts or lock nuts which can then be tightened in affiliation with the tightening of the exterior threaded nuts 10 to provide the necessary rigidity to the reinforcing mechanism.

FIG. 2 illustrates a cross-sectional view of another identified reinforcing mechanism which is comprised of a metallic tube 10 and an insert 12. After the insert 12 has been disposed inside the tube 10, the tube 10 is crimped so as to deform in a radially inward direction. The crimped part of the tube 10 turns into locked inside an annular groove 14 which has been inscribed about the periphery of the insert 12, thus locking the insert 12 throughout the tube 10. A threaded bolt 14 extends from the insert 12 and would prolong beyond the exterior of a duct wall to be secured thereto via a threaded nut, or the like. The insert 10 may include an internal cavity to accommodate an unillustrated biasing member, equivalent to a spring, whereby the spring would outwardly bias the bolt sixteen for better flexibility. The insert 12 may be made from a metallic materials or from a plastic or polymer materials.

Whereas these identified reinforcing mechanisms are profitable to a level, they endure from a number of logistical issues. The threaded tie rod 2 proven in FIG. 1 is costly to supply and deploy in a duct of any length. Similarly, the insert 12 shown in FIG. 2 is also prohibitively costly.

With the forgoing problems and issues in thoughts, it’s the general object of the current invention to offer a duct reinforcing rod which overcomes the above-described drawbacks while maximizing effectiveness and flexibility within the assembling course of.

Abstract OF THE INVENTION

It’s an object of the present invention to supply a reinforcing rod for ducts.

It is one other object of the present invention to supply a reinforcing rod for ducts which do not make the most of costly constituent elements.

It’s another object of the current invention to supply a reinforcing rod for ducts which utilize commercially available components.

It is one other object of the current invention to supply a reinforcing rod for ducts which utilizes a pair of crimps to safe a threaded bolt or nut in opposition to longitudinal movement therein.

It is another object of the current invention to offer a reinforcing rod for ducts which will significantly cut back the overall expense of outfitting ductwork with such reinforcing rods.

It is one other object of the current invention to provide a reinforcing rod for ducts is both quick to manufacture, in addition to being reliable in use.

It’s one other object of the current invention to supply a fabrication apparatus to fabricate the reinforcing rod.

These and other aims of the current invention, and their most well-liked embodiments, shall turn into clear by consideration of the specification, claims and drawings taken as a whole.

Brief DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates one recognized reinforcement mechanism for ductworks.

FIG. 2 is a cross-sectional view of another known reinforcement mechanism for ductworks.

FIG. Three is a cross-sectional view of a duct reinforcing rod using a bolt factor, according to at least one embodiment of the present invention

FIG. Four is a cross-sectional view of the duct reinforcing rod proven in FIG. Three after a crimping operation has been accomplished.

FIG. 5 is a cross-sectional view of the duct reinforcing rod utilizing a nut element after a crimping operation has been achieved, in accordance to another embodiment of the current invention.

HVAC ducting accessoriesFIG. 6 illustrates the reinforcing rod of FIGS. Three and 4 as it is employed in association with a duct wall, according to 1 embodiment of the present invention.

FIG. 7 illustrates the reinforcing rod of FIG. 5 as it’s employed in association with a duct wall, in accordance to another embodiment of the current invention.

FIG. Eight illustrates a partial, cross-sectional facet, planar view of a vertical fabrication apparatus, according to 1 embodiment of the present invention.

FIG. 9 illustrates a top, planar view of labor surface of the vertical fabrication apparatus shown in FIG. Eight.

FIG. 10 is a partial cross-sectional view of the tubing of the reinforcing rod after it has been loaded into the vertical fabrication apparatus shown in FIG. Eight.

FIG. 11 is a partial cross-sectional view of the tubing of the reinforcing rod after it has been pushed down upon a bolt arrested within the vertical fabrication apparatus of FIG. Eight.

FIG. 12 illustrates the closed place of a pair of matching crimper slide blocks shown in FIG. Eight.

FIG. 13 illustrates a partial cross-sectional view of a horizontal fabrication apparatus, according to a different embodiment of the present invention.

FIG. 14 illustrates a partial cross-sectional elevational view of a clamping station.

FIG. 15 illustrates partial cross-sectional elevational view of a crimping station.

FIG. 16 illustrates a side elevation of the horizontal fabrication apparatus of FIG. 13.

FIG. 17 illustrates a entrance elevation of the horizontal fabrication apparatus of FIG. 13.

FIG. 18 illustrates the two separate feeding tracks used to supply the insertion components for the horizontal fabrication apparatus of FIG. 13.

DETAILED DESCRIPTION OF The preferred EMBODIMENT

FIG. Three is a cross-sectional view of a duct reinforcing rod a hundred, according to one embodiment of the current invention. As depicted in FIG. Three, the reinforcing rod 100 includes a metal tubing 102 and a typical bolt, or jam nut, 104. As illustrated in FIG. 3, the tubing 102 and the bolt 104 are sized in order that the top 106 of the bolt 104 enjoys a fight fitting relationship with the internal diameter of the tubing 102 when the tubing 102 is pressed over the top 106 in the final direction of arrow A, as might be described in more element later.

The tubing 102 is envisioned to be a typical, commercially available metallic conduit, resembling is utilized in electrical wiring, nonetheless the current invention shouldn’t be limited on this regard because the tubing 102 might alternatively be formed from any elongated, inflexible tubing with out departing from the broader aspects of the present invention. Likewise, the bolt 104 is envisioned to be a standard, commercially out there metallic bolt, which itself may be formed from zinc, stainless steel or the like without departing from the broader elements of the current invention. The utilization of a normal, commercially accessible threaded nut, rather than the threaded bolt 104 shown in FIGS. 3 and four, can be contemplated by the present invention and will likely be described in additional detail later along side FIG. 5.

It’s due to this fact an essential side of the present invention that the reinforcing rod 100 is constructed using common, commercially out there ‘stockparts. By utilizing such parts, the current invention considerably reduces the general cost of manufacturing the reinforcing rod 100, as compared to prior artwork devices. Additional, and as generally mentioned beforehand, a typical duct system will make use of a large number of periodically spaced reinforcing rods, due to this fact the aggregate savings realized by using a reinforcing rod in keeping with the present invention is oftentimes quite giant.

FIG. 4 illustrates the reinforcing rod 100 after the tubing 102 has been pressed over the top 106 of the bolt 104. As depicted in FIG. Four, the tubing 102 is pressed over the top 104 so as to extend beyond the head 104 a predetermined amount. Certainly, will probably be readily appreciated that the size of the threaded part 108 of the bolt 104 which extends past the tubing 104 could also be different in accordance with the precise design characteristics of the ductwork and the relative size of the bolt 104 utilized.

The reinforcing rod one hundred shown in FIG. Four is crimped in a radially inward path so as to capture the head 104 therebetween. In distinction to prior artwork devices, the current invention employs each first and second crimps, one hundred ten and 112 respectively, disposed above and below the top 106 to ensure towards longitudinal motion of the bolt 104 within the tubing 102.

FIG. 5 illustrates a reinforcing rod a hundred and fifty using a threaded nut 152 in place of the bolt 104 proven in FIGS. Three and four, according to another embodiment of the current invention. As depicted in FIG. 5, the tubing 102 is pressed over the nut 152 and the tubing 104 is then is crimped in a radially inward course in order to seize the nut 152 therebetween. As discussed along side FIGS. 3 and four, the present invention employs both first and second crimps, a hundred and ten and 112 respectively, disposed above and beneath the nut 152 to make sure against longitudinal motion of the nut 152 inside the tubing 102.

It is due to this fact another important side of the present invention that the reinforcing rod a hundred/one hundred fifty want not employ an inscribed, annual groove, or the like, to be able to securely repair the bolt 104 or, alternatively, the nut 152, from longitudinal motion inside the tubing 102.

FIG. 6 illustrates the reinforcing rod one hundred as it is employed in affiliation with a duct wall 154. As shown in FIG. 6, the reinforcing rod 100 is secured against the duct wall 154 via the appliance of a nut 156 having matching threads with the bolt 106 mounted inside the tubing 102. Alternatively, FIG. 7 illustrates the reinforcing rod one hundred fifty as it is secured in opposition to the duct wall 154 by way of the appliance of a bolt 158 having matching threads with the nut 152 fixed inside the tubing 102. Though not illustrated, the current invention also contemplates using rubber o-rings, washers, or the like, together with matching, threaded companions to the bolt 104 or the nut 152 to secure the reinforcing rod a hundred/150 to the planar sides of a duct. As shall be appreciated, the rubber o-rings, washers, or the like could also be utilized adjacent to the duct wall 154 as a way to substantially attenuate or get rid of vibration of the duct wall 154 throughout air motion by the ductwork.

Reference will now be made to FIGS. Eight-12 in order to more utterly describe a fabrication apparatus of the reinforcing rod a hundred, according to 1 embodiment of the current invention. FIG. 8 illustrates a partial, cross-sectional facet, planar view of a vertical fabrication apparatus 200, in accordance to 1 embodiment of the present invention. As shown in FIG. 2, the vertical fabrication apparatus 200 generally includes a housing 202, a work floor 204 and a rack and pinion mechanism 206. The rack and pinion mechanism 206 further features a tube pushing cylinder 208 which, when selectively actuated, serves to maneuver the rack 210 in a vertical route, thereby causing the pinions 212 to rotate accordingly. The motion of the pinions 212 cause the tube 102 to be pushed down over the top 106 of the bolt 102, as shall be described in more detail later.

A planar top view of the work floor 204 is depicted in FIG. 9 and illustrates an arresting depression 214 during which the bolt 104 is mounted to await the motion of the tubing 102 thereon. A matching pair of crimper slide blocks 216 are also shown in FIG. 9 and are selectively slidable towards each other in order to accomplish the formation of the crimps one hundred ten and 112, proven in FIG. 4.

In operation, the tubing 102 is mounted within the rack and pinion mechanism 206, as illustrated in FIG. 10. As additional illustrated in FIG. 10, the bolt 104 is mounted within the arresting depression 214 straight below the loaded tubing 102. A pair of matching tube pushers 218 are disposed on either facet of the loaded tubing 102 and operate below the biasing of the pinions 212 because of the actuation of the tube pushing cylinder 208. The tube pushers 218 are designed to power the tubing 102 in a downward, substantially vertical movement and over the top 106 of the bolt 104. FIG. Eleven illustrates the position of the tube pushers 218 after the tubing 102 has been pushed over the pinnacle 106 of the bolt 104.

Once the tubing has been pushed over the pinnacle 106 of the bolt 104, the pair of crimper slide blocks 216 are actuated and are brought to bear upon the exterior floor of the tubing 102, as illustrated in FIG. 12. Because the crimper slide blocks 216 impinge upon the exterior surface of the tubing 102, a pair of angled crimpers 220, shown in FIG. 9, create the crimps a hundred and ten and 112 in the tubing 102. Thus, the head 106 of the bolt 104 is securely fastened between the crimps one hundred ten and 112. At this juncture, the tube pushing cylinder 208 is selectively brought about to reverse direction and the reinforcing rod a hundred is lifted away from the work floor 204 to be subsequently removed. It will be readily appreciated that each ends of the tubing 102 shall be deformed to repair a bolt in both finish thereof.

The vertical fabrication apparatus 200 could also be electrically, pneumatically or hydraulically operated, or a mixture thereof. In the preferred embodiment of the current invention, the operation of the vertical fabrication apparatus 200 is pneumatically actuated.

While FIGS. 8-12 talk about the vertical fabrication apparatus 200, the current invention additionally contemplates orienting the operation of the fabrication apparatus within the horizontal aircraft. On this regard, FIG. 13 illustrates a partial cross-sectional view of a horizontal fabrication apparatus 300.

As proven in FIG. Thirteen, the horizontal fabrication apparatus 300 includes a support base 302, a clamping station 304, a crimping station 306 and an insertion machine 308. The clamping station 304 and the crimping station 306 each lengthen across the planar work surface 310 of the horizontal fabrication apparatus 300, considerably perpendicular to the insertion axis X of the horizontal fabrication apparatus 300.

The help base 302 is ideally a block of metallic having a plurality of half-cylindrical depressions, 312, 314 and 316, formed on the upper aspect thereof. The depressions are sized to accommodate a conduit of differing diameters and is selectively translatable within the lateral route, that’s, in a path considerably perpendicular to the insertion axis X, so as to selectively place one of many depressions opposite the tooling opening or aperture of the clamping station 304.

FIGS. 14 and 15 illustrate partial cross-sectional elevational views of the clamping station 304 and the crimping station 306, respectively. As shown in FIG. 14, the clamping station features a pair of pneumatically actuated clamping arms 318 disposed about the tooling aperture 320. It is the perform of the clamping station 304 to securely hold the conduit 322 (seen in FIG. 13) in place, thereby stopping axial or transverse movement of the conduit 322 through the insertion and crimping process, to be mentioned in more element later.

The arms 318 of the clamping station 304 define an interior, substantially circular opening which act as the tooling aperture 320. As will be appreciated, the arms 318 could also be interchanged so as to provide a tooling aperture of applicable diameter to match the diameter of the particular conduit being utilized. Moreover, the form of the inner, circular opening of the arms 318 are meant to arrest, as opposed to deform, the conduit 322.

Aligned with the clamping station 304, the crimping station 306 of FIG. 15 features a pair of pneumatically actuated crimping arms 324 disposed concerning the tooling aperture 320. It’s the function of the crimping station 306 to supply the crimps, 110 and 112, that hold the bolt or nut inside the conduit 322, as mentioned previously together with FIGS. 4 and 5. Indeed, so as to kind both sets of crimps, a hundred and ten and 112, in a single operation, the crimping station 306 is preferably supplied with two pairs of crimping arms 324, disposed one behind the other as considered in FIG. 15.

The arms 324 of the crimping station 306 outline inwardly protruding, lateral impact edges 326 which are co-axially aligned with the tooling aperture 320. The inwardly protruding, lateral affect edges 326 serve to influence and deform the conduit 322, thereby producing the crimps a hundred and ten and 112 when the arms 324 transfer in direction of each other. As shall be appreciated, the arms 324 may be interchanged so as to accommodate the diameter of the particular conduit being utilized. Moreover, the arms 324 might even be interchanged, as needed, to address put on of the inwardly protruding, lateral impact edges 326.

As finest seen in FIGS. 14 and 15, the clamping station 304 and the crimping station 306 every embody matching pairs of cease adjustment bolts 321. The stop adjustment bolts 321 are utilized in order to regulate the quantity by which the clamping arms 318 and the crimping arms 324 journey in direction of each other, and will thereby adjust the fixing stress of the clamping arms 318 and the impression strain of the crimping arms 324.

Taking FIGS. Thirteen-15 in combination, the conduit 322 is first situated within one of the depressions, 312, 314 and 316, the appropriate certainly one of which has previously been oriented co-axially with the tooling aperture 320. The conduit 322 is then inserted via the tooling aperture 320 of both the clamping station 304 and the crimping station 306 until its distal end is correctly positioned by a block 328, seen in FIG. Thirteen. The clamping station 304 is then actuated to trigger the arms 318 to move towards and fix the conduit 322 through the insertion of the bolt 108 or nut 152 into the conduit 322, and the next crimping motion.

Returning to FIG. 13, the insertion system 308 includes a nut insertion punch 330 and a bolt insertion punch 332. The nut insertion punch 330 and the bolt insertion punch 332 are selectively actuatable by a pneumatically operated solenoid 336. The solenoid 336 is itself may be selectively translatable in a course considerably perpendicular to the insertion axis X so as to selectively position the operable end of the solenoid 336 reverse both the nut insertion punch 330 or the bolt insertion punch 332. In a most well-liked embodiment of the present invention, nevertheless, the solenoid 336 is maintained in a stationary place, whereas the nut insertion punch 330 and the bolt insertion punch 332 are selectively translatable for actuation by the solenoid 336.

One a bolt 108 or nut 152 has been properly loaded in opposition to an affect finish 340 of the nut insertion punch 330 or the bolt insertion punch 332, as shall be discussed in larger detail later, actuation of the horizontal fabrication apparatus 300 will selectively trigger the solenoid 336 to push in opposition to the nut insertion punch 330, or the bolt insertion punch 332, and the integral biasing springs 334, thereby urging the bolt 108 or nut 152 into the secured conduit 332 within the route of insertion axis X. As will likely be appreciated, the solenoid 336 serves to urge the bolt 108, or nut 152, into the conduit 322 by an amount which correctly positions the bolt 108, or nut 152, to simply accept crimping on both side thereof, as illustrated in FIGS. Four and 5.

The horizontal fabrication apparatus 300 of the present invention also selectively provides for the automatic feeding of the requisite bolts 108, or nuts 152, by way of a gravity feed gadget 342. FIGS. 16 and 17 show facet and frontal elevations of the horizontal fabrication apparatus 300, respectively, as geared up with the gravity feed device 342. As proven in FIGS. 16 and 17, the gravity feed device 342 includes an elevated hopper 344 having two compartments, 346 and 348, for separately storing the bolts 108 and the nuts 152.

As greatest seen in FIG. 17, the gravity feed system 342 preferably includes two separate feeding tracks, 350 and 352, which hold a plurality of bolts 108 and nuts 152 therein. FIG. 18 illustrates the 2 separate feeding tracks, 350 and 352, as well as their respective tracks, 354 and 356, and reveals how the bolt 108 and the nuts 152 are selectively positioned for insertion by the nut insertion punch 330, or the bolt insertion punch 332.

It will likely be readily appreciated that after the conduit 322 has been secured by the clamping station 304, and the bolt 108 or nut 152 has been inserted therein via the gravity feed system 342 and the solenoid 336, the crimping station will imprint the crimps a hundred and ten and 112 to the conduit 322 to securely fix the bolt 108, or nut 152, within the conduit 322. All tooling of the horizontal fabrication apparatus 300 will subsequently retract for easy removing of the conduit 322, which can then be processed in a similar fashion on its opposing distal end, forming the finished reinforcing rod one hundred of the current invention.

As will likely be appreciated by consideration of the embodiments illustrated in FIGS. 1-18, the current invention offers a reinforcing rod for ducts which make the most of standardized parts to form a rigid and economical stabilizer. Moreover, the formation of a pair of first and second crimps to securely fix a regular bolt there between, including an fabrication apparatus for conducting this crimping, supplies a heretofore unknown securing configuration which is both fast to manufacture, in addition to being reliable in use. By using the vertical fabrication apparatus 200, or the horizontal fabrication apparatus 300, to kind the reinforcing rod a hundred, the current invention significantly reduces the time, labor and expense of preparing stabilization and reinforcing rods to be used in commercial and residential ductwork.

Whereas the invention has been described with reference to the preferred embodiments, will probably be understood by those expert within the artwork that varied obvious modifications may be made, and equivalents may be substituted for components thereof, without departing from the important scope of the current invention. Due to this fact, it is intended that the invention not be limited to the actual embodiments disclosed, but that the invention contains all equal embodiments.

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