The present disclosure relates to masonry blocks, and more specifically to a masonry block splitting apparatus and method that creates a convex, or “rock-like” split face without the need for projections and the associated cleaning.
Block splitting methods and apparatuses typically include splitters with projections to generate split blocks with a roughened look. These projections get fouled easily, and need to be frequently cleaned.
A splitting apparatus is provided that includes a first splitting blade with a smooth top that forms a blade edge. The smooth top has a width X and a shoulder angle of less than the friction angle from a point in the middle of the top. A second splitting blade is disposed opposite the first splitting blade, and has a smooth top with a width Y and a shoulder angle of less than the friction angle from a point in the middle of the top.
Other systems, methods, features, and advantages of the present disclosure will be or become apparent to one with skill in the art upon examination of the following drawings and detailed description. It is intended that all such additional systems, methods, features, and advantages be included within this description, be within the scope of the present disclosure, and be protected by the accompanying claims.
Aspects of the disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views, and in which:
In the description that follows, like parts are marked throughout the specification and drawings with the same reference numerals. The drawing figures might not be to scale and certain components can be shown in generalized or schematic form and identified by commercial designations in the interest of clarity and conciseness.
Apparatus 100 includes upper splitting blade 104 and lower splitting blade 106, which can each be formed from one or more of tungsten carbide, hardened AR steel or other suitable materials, and which can each have a smooth surface with no protrusions. Upper splitting blade 104 and lower splitting blade 106 can each have shallow shoulder angles and preferably have shoulder angles that are less than the friction angle. If the shoulder angle is less than the friction angle, then the splitting blade will hold the masonry block in position as it is being split, and will crush the edges of the masonry block to create a convex split face. Conversely, if the shoulder angle is greater than the friction angle, then the masonry block halves will, after the initial fracture, be squeezed away from the splitting blade with little or no split face convexity.
For most masonry materials, the friction angle is typically 15 to 20 degrees, but if the shoulder angle is less than about 5 degrees, then the debris from splitting operations can impede the subsequent process. In one exemplary embodiment, upper splitting blade 104 can be approximately 30 mm wide with a shoulder angle of approximately 10 degrees, and lower splitting blade 106 can be approximately 50 mm wide with a shoulder angle of approximately 10 degrees, although other widths and shoulder angles can also or alternatively be used.
Once the action of upper splitting blade 104 is completed, the split halves of the masonry block 102 are squeezed away from each other, which stops further spalling to the block portions along the intersections of the split plane with the upper and lower surfaces of block 102. In addition, some debris can be generated at that time, but the majority of the debris will be held in place by the split halves of masonry block 102.
The top of each blade segment includes a first flat surface and a second flat surface that meet at a point to form the blade edge. Each flat surface of the top of each blade segment extends downwards at an angle of approximately 10 degrees, although variations within approximately 5 to 15 degrees can also or alternately be used. At each side of the blade segment, the top surface interfaces with a side surface to form an edge, where the edge is typically configured to be flush with the top surfaces of blade holder 712. Each top surface of blade holder 712 is adjacent with a plate, such as an infeed plate and an outfeed plate, which are used to guide the masonry blocks into position onto bottom splitting blade assembly 700. The top surfaces of blade holder 712 are configured to bear the load of the masonry blocks during splitting, in order to reduce deflection and wear on the infeed and outfeed plates.
As used herein, “hardware” can include a combination of discrete components, an integrated circuit, an application-specific integrated circuit, a field programmable gate array, or other suitable hardware. As used herein, “software” can include one or more objects, agents, threads, lines of code, subroutines, separate software applications, two or more lines of code or other suitable software structures operating in two or more software applications, on one or more processors (where a processor includes a microcomputer or other suitable controller, memory devices, input-output devices, displays, data input devices such as a keyboard or a mouse, peripherals such as printers and speakers, associated drivers, control cards, power sources, network devices, docking station devices, or other suitable devices operating under control of software systems in conjunction with the processor or other devices), or other suitable software structures. In one exemplary embodiment, software can include one or more lines of code or other suitable software structures operating in a general purpose software application, such as an operating system, and one or more lines of code or other suitable software structures operating in a specific purpose software application. As used herein, the term “couple” and its cognate terms, such as “couples” and “coupled,” can include a physical connection (such as a copper conductor), a virtual connection (such as through randomly assigned memory locations of a data memory device), a logical connection (such as through logical gates of a semiconducting device), other suitable connections, or a suitable combination of such connections.
Algorithm 800 begins at 802, where an array of blocks is moved to a conveyor. In one exemplary embodiment, blocks that are manufactured by a block manufacturing process can be stacked on pallets in a layered array, such as an 8×4 array, and a block handling machine can be used to move individual layers of the array to a conveyor system. The block handling machine can include a programmable controller, sensors, hydraulic calipers and other suitable devices that allow the top layer of the array of blocks to be located, to center the calipers on the array, to close the calipers with sufficient pressure to hold the array in place without crushing the individual masonry blocks, and to allow the array to be lifted by a crane and moved to a predetermined location without manual intervention, such as in response to one or more algorithm controls that are provided to the programmable controller (e.g. move calipers to pallet; align calipers; close calipers; raise calipers; move calipers to conveyor). The algorithm then proceeds to 804.
At 804, the array of blocks is aligned to the conveyor, such as by receiving one or more manual alignment commands, by using alignment sensors or in other suitable manners. The algorithm then proceeds to 806.
At 806, a conveyor mechanism is engaged to the rear side surface of the array. In one exemplary embodiment, the conveyor mechanism can include a plurality of motive elements that can be raised through the conveyor surface to engage the rear side surface of the array of blocks, and to apply a lateral force to move the array along the conveyor towards a splitting assembly. The conveyor mechanism can operate under control of a programmable controller in response to manual or sensor inputs, such as in response to one or more algorithm controls that are provided to the programmable controller (e.g. raise motive elements; move motive elements forward until resistance is measured; engage motive elements to force providing device). Likewise, other suitable conveyor mechanisms can also or alternatively be used. The algorithm then proceeds to 808.
At 808, the array of blocks is moved to a first splitting position. In one exemplary embodiment, the dimensions of the array can be used by the programmable controller to determine the first splitting position as a function of the location of the motive elements, sensors can be used to generate signals that are used by the programmable controller to confirm proper alignment of the array of blocks, manual alignment controls can be received at the programmable controller, or other suitable processes can also or alternatively be used. In another exemplary embodiment, the blocks can be textured instead of being split, where the top of the blade is aligned with an intersection between two block faces. The algorithm then proceeds to 810.
At 810, the conveyor mechanism is released, to prevent damage to the mechanism when splitting occurs. In this exemplary embodiment, when the first row of blocks in the array of blocks is split, the block halves will need to be able to move in either direction from the splitting tool when the angled surfaces of the upper blade are buried in the upper surface of the block. Releasing the conveyor mechanism allows this movement to occur during the splitting process without causing damage. The algorithm then proceeds to 812.
At 812, a hydraulic press or other suitable press is activated to split the masonry block and provide additional texturing, such as by using the splitting process discussed herein. In one exemplary embodiment, the programmable controller can receive an instruction to activate the press after sensor data confirming proper alignment has been received, or other suitable processes can also or alternatively be used. The algorithm then proceeds to 814.
At 814, the conveyor mechanism is engaged, such as by coupling the motive elements to a driver or other suitable systems or devices. The algorithm then proceeds to 816, where the blocks are moved to the next position and the bottom splitting blade is wiped by the movement of the blocks, such as by using a bottom splitting blade that is flush with the conveyor surface and that is not withdrawn between splitting operations. In one exemplary embodiment, the trailing edge of the split block can wipe the outfeed side of the splitting blade, and the leading of the next block to be split can wipe the infeed side of the splitting blade, as discussed herein. The programmable controller can receive an instruction to move the blocks by a predetermined distance or in other suitable manners. The algorithm then proceeds to 818.
At 818, it is determined whether the row of blocks that was split was a last row in an array. If it is determined that there are additional rows in the array to be split, the algorithm returns to 812, otherwise the algorithm returns to 802.
In operation, algorithm 800 allows masonry blocks to be split in a manner that reduces the amount of handling and which simplifies the operation of the splitting process. Algorithm 800 allows a splitting blade such as the one described herein to be used to split block, to provide a textured surface with minimal debris generation and minimal additional cleaning of the splitting blades.
It should be emphasized that the above-described embodiments are merely examples of possible implementations. Many variations and modifications may be made to the above-described embodiments without departing from the principles of the present disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims.
This application claims priority to U.S. 61/905,733, filed Nov. 18, 2013, which is hereby incorporated by reference for all purposes as if set forth herein in its entirety.
Number | Name | Date | Kind |
---|---|---|---|
415773 | Fiske | Nov 1889 | A |
470788 | Devine | Mar 1892 | A |
511098 | Shultz | Dec 1893 | A |
534462 | Baisley | Feb 1895 | A |
787199 | Lloyd | Apr 1905 | A |
788379 | Rich | Apr 1905 | A |
803014 | McIlravy | Oct 1905 | A |
806951 | Bryning | Dec 1905 | A |
827879 | Newnham | Aug 1906 | A |
1086975 | Aaronson | Feb 1914 | A |
1092621 | Worner | Apr 1914 | A |
1287055 | Lehman | Dec 1918 | A |
1534353 | Besser | Apr 1925 | A |
1872522 | Stuckey | Aug 1932 | A |
1893430 | McKenzie | Jan 1933 | A |
1919801 | Newsom | Jul 1933 | A |
2151468 | Henderson | Oct 1936 | A |
2203935 | Hedlund | Jun 1940 | A |
2219606 | Schoick | Oct 1940 | A |
2313363 | Schmitt | Mar 1943 | A |
2593606 | Price | Apr 1952 | A |
2657681 | Gatzke | Nov 1953 | A |
2746447 | Petch | May 1956 | A |
2775326 | Blum | Dec 1956 | A |
2867205 | Vesper | Jan 1959 | A |
2925080 | Smith | Feb 1960 | A |
3095868 | Mangis | Jul 1963 | A |
3120842 | Cox et al. | Feb 1964 | A |
3392719 | Clanton | Jul 1968 | A |
3425105 | Guide | Feb 1969 | A |
3492984 | Harper | Feb 1970 | A |
3559631 | Mangis | Feb 1971 | A |
3940229 | Hutton | Feb 1976 | A |
3981953 | Haines | Sep 1976 | A |
4023767 | Fontana | May 1977 | A |
4050864 | Komaki | Sep 1977 | A |
4098865 | Repasky | Jul 1978 | A |
4114773 | Sekiguchi | Sep 1978 | A |
4139593 | Holz et al. | Feb 1979 | A |
4178340 | Hyytinen | Dec 1979 | A |
4193718 | Wahrendorf et al. | Mar 1980 | A |
4250863 | Gagnon et al. | Feb 1981 | A |
4335549 | Dean, Jr. | Jun 1982 | A |
4524551 | Scheiwiller | Jun 1985 | A |
4627764 | Scheiwiller | Dec 1986 | A |
4770218 | Duerr | Sep 1988 | A |
4784821 | Leopold | Nov 1988 | A |
D299067 | Forsberg | Dec 1988 | S |
4802836 | Whissell | Feb 1989 | A |
4848309 | Alderete | Jul 1989 | A |
4869660 | Ruckstuhl | Sep 1989 | A |
4973192 | Hair | Nov 1990 | A |
D315026 | Castonguay et al. | Feb 1991 | S |
5017049 | Sievert | May 1991 | A |
5028172 | Wilson et al. | Jul 1991 | A |
5031376 | Bender et al. | Jul 1991 | A |
5056998 | Goossens | Oct 1991 | A |
5066070 | Clarke | Nov 1991 | A |
5078940 | Sayles | Jan 1992 | A |
5152275 | Landhuis | Oct 1992 | A |
5158132 | Guillernot | Oct 1992 | A |
5217630 | Sayles | Jun 1993 | A |
5487526 | Hupp | Jan 1996 | A |
5534214 | Sakamoto et al. | Jul 1996 | A |
D377181 | Hupp | Jan 1997 | S |
D378702 | Blomquist et al. | Apr 1997 | S |
5662094 | Giacomelli | Sep 1997 | A |
5662386 | Newman et al. | Sep 1997 | A |
5687515 | Rodrigues et al. | Nov 1997 | A |
5709602 | Woolford | Jan 1998 | A |
5722386 | Fladgard et al. | Mar 1998 | A |
5733470 | Roth et al. | Mar 1998 | A |
5735643 | Castonguay et al. | Apr 1998 | A |
5762061 | Bevan | Jun 1998 | A |
5788423 | Perkins | Aug 1998 | A |
5827015 | Woolford et al. | Oct 1998 | A |
D404146 | Perkins | Jan 1999 | S |
5879603 | Sievert | Mar 1999 | A |
5884445 | Woolford | Mar 1999 | A |
6029943 | Sievert | Feb 2000 | A |
6050255 | Sievert | Apr 2000 | A |
6082057 | Sievert | Jul 2000 | A |
6102026 | Fladgard et al. | Aug 2000 | A |
6113379 | LaCroix et al. | Sep 2000 | A |
6138983 | Sievert | Oct 2000 | A |
6142713 | Woolford et al. | Nov 2000 | A |
6149352 | MacDonald | Nov 2000 | A |
6178704 | Sievert | Jan 2001 | B1 |
D438640 | Bolles | Mar 2001 | S |
6209848 | Bolles et al. | Apr 2001 | B1 |
D442703 | Fifield | May 2001 | S |
6224815 | LaCroix et al. | May 2001 | B1 |
D448861 | Daniels et al. | Oct 2001 | S |
6321740 | Scherer et al. | Nov 2001 | B1 |
6401707 | Fladgard et al. | Jun 2002 | B1 |
D464145 | Scherer | Oct 2002 | S |
6460534 | Vasquez et al. | Oct 2002 | B1 |
6464199 | Johnson | Oct 2002 | B1 |
6502569 | Lee | Jan 2003 | B1 |
6668816 | Pedersen et al. | Dec 2003 | B1 |
6874494 | Scherer et al. | Apr 2005 | B2 |
D505733 | Castonguay et al. | May 2005 | S |
6886551 | Scherer | May 2005 | B2 |
6910474 | Scherer | Jun 2005 | B1 |
6918715 | Scherer et al. | Jul 2005 | B2 |
7055517 | Kitahara | Jun 2006 | B1 |
7107982 | Lechner | Sep 2006 | B1 |
7146974 | Scherer | Dec 2006 | B2 |
7425106 | Altmann et al. | Sep 2008 | B2 |
7967001 | Scherer et al. | Jun 2011 | B2 |
8006683 | Scherer et al. | Aug 2011 | B2 |
8251053 | Scherer | Aug 2012 | B2 |
8327833 | Scherer et al. | Dec 2012 | B2 |
20020015620 | Woolford et al. | Feb 2002 | A1 |
20020092257 | Scherer et al. | Jul 2002 | A1 |
20030089363 | Suto et al. | May 2003 | A1 |
20030180099 | Scherer et al. | Sep 2003 | A1 |
20040200468 | Scherer | Oct 2004 | A1 |
Number | Date | Country |
---|---|---|
3702515 | Aug 1988 | DE |
924290 | Apr 1963 | GB |
1509747 | May 1978 | GB |
2011819 | Apr 1994 | RU |
2198095 | Feb 2003 | RU |
Entry |
---|
Zhou, Yingxin and Jian Zhao. “Advances in Rock Dynamics and Applications.” May 25, 2011. CRC Press. p. 430. |
“Crush.” Collins Dictionary. Oct. 19, 2016. <http://www.collinsdictionary.com/dictionary/english/crush>. |
“Split.” Collins Dictionary. Oct. 19, 2016. <http://www.collinsdictionary.com/dictionary/english/split>. |
Russian Patent Office; International Search Report and Written Opinion; PCT Application No. PCT/US2014/066071; dated Mar. 26, 2015. |
“Haith Robot System for Aggregate Industries,” http://www.hub-4.com/news/109/haith-robot-system-for-aggregate-industries, Jul. 31, 2006. |
“Reconstructed Stone—Stone Pitchers,” http://www.haithindustrial.co.uk/index.php?sec=cont&id=26, Jul. 31, 2006. |
“Natural Stone—Block and Slab Splitting,” http://www.haithindustrial.co.uk/index.php?sec=cont&id=32, Jul. 31, 2006. |
“Splitting, Cutting, Marking & Layout,” http://www.pavetech.com/newtools/cutting.shtm, Jul. 31, 2006. |
“Stone Splitter,” http://www.pavetech.com/newtools/stonesplitter.shtm, Jul. 31, 2006. |
“Splitters/Turnovers,” http://www.besser.com/equipment/splitters/, Aug. 3, 2006. |
“Split-Face Concrete Block,” http://www.toolbase.org/Technology-Inventory/walls/split-face-concrete-block, Aug. 3, 2006. |
Canadian Patent Office; Office Action; Canadian Application No. 2,912,574; dated Dec. 11, 2015. |
The Response to Office Action submitted to Canadian IP Office dated Mar. 10, 2016 for co-pending Canadian patent application No. 2,912,574. |
The Notice of Allowance issued by Canadian IP Office dated May 2, 2016 for co-pending Canadian patent application No. 2,912,574. |
The extended European search report dated May 9, 2016 by European Patent Office for the co-pending European patent application No. 14861436.5. |
The reply in response to the extended European search report dated May 9, 2016, as filed to the European Patent Office for the co-pending European patent application No. 14861436.5. |
The Communication pursuant to Article 94(3) EPC dated Apr. 7, 2017 issued by the European Patent Office for the co-pending European patent application No. 14861436.5. |
The Reply in response to the Communication pursuant to Article 94(3) EPC as filed with the European Patent Office dated Aug. 2, 2017 for the co-pending European patent application No. 14861436.5. |
Number | Date | Country | |
---|---|---|---|
20150136108 A1 | May 2015 | US |
Number | Date | Country | |
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61905733 | Nov 2013 | US |