US20080135466A1 - Grating Using Press Process and Method Thereof - Google Patents

Grating Using Press Process and Method Thereof Download PDF

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Publication number
US20080135466A1
US20080135466A1 US11/814,881 US81488106A US2008135466A1 US 20080135466 A1 US20080135466 A1 US 20080135466A1 US 81488106 A US81488106 A US 81488106A US 2008135466 A1 US2008135466 A1 US 2008135466A1
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United States
Prior art keywords
grating
frame parts
slot frame
supports
manufacturing
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Abandoned
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US11/814,881
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English (en)
Inventor
Jin-Hwan Kim
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Individual
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Individual
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Publication of US20080135466A1 publication Critical patent/US20080135466A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/005—Making gratings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing

Definitions

  • the present invention relates, in general, to gratings and methods of manufacturing the same and, more particularly, to a grating in which a plurality of water drain slots is formed by deep-drawing a metal plate using a press machine without a welding process, and slot frame parts formed by deep-drawing serve to sustain load applied to the grating, thus having a structure capable of sustaining a relatively heavy load despite the simple manufacturing method thereof, and to a method of manufacturing the same through the pressing process.
  • sewers are formed at sides of roadways or streets, so that rainwater and the like flows into a sewer system through the sewers.
  • a grating is disposed at upper ends of each sewer opening, such that a person or a vehicle can pass over the sewer but rainwater can flow into it.
  • a method using a molding process is a representative example.
  • an excessively large amount of steel material is required for a molding process, so that there are disadvantages in that the manufactured grating is too heavy, and the manufacturing cost thereof is increased. Therefore, recently, the method using the molding process is seldom used. Meanwhile, recently, gratings having lattice structures have been widely used.
  • FIG. 1 is a perspective view showing the construction of a representative grating having a lattice structure.
  • a plurality of I-bars 20 is longitudinally fastened to a rectangular main body 10 by welding.
  • Bearing bars 30 are seated into the notches of the I-bars 20 in directions crossing over the I-bars 20 .
  • Each bearing bar 30 is fixed to the main body 10 and the I-bars 20 by welding.
  • the main body 10 , the I-bars 20 and the bearing bars 30 must be manufactured through separate processes before being assembled together. Therefore, there is a problem of a complex manufacturing process.
  • the I-bars 20 and the bearing bars 30 are fixed to the main body 10 of the grating by welding, and the I-bars 20 and the bearing bars 30 are also fixed by welding at junctions between them. Therefore, labor costs increase due to the increased number of welders, and the time required for manufacturing the grating is increased, so that there is a problem in that the unit cost of production is increased.
  • a grating that makes it possible to overcome the problems of the conventional grating manufacturing method, that is manufactured through a simple process, and that can sustain a heavy load, is required.
  • an object of the present invention is to provide a grating, which can sustain a relatively heavy load, and a grating manufacturing method, which has a reduced number of steps thanks to the use of a press machine.
  • the present invention provides a method of manufacturing a grating using a pressing process, comprising the steps of: bending opposite ends of a metal plate to form a main surface and supports, each having a predetermined height;
  • the present invention provides a method of manufacturing a grating using a pressing process, comprising the steps of: bending the opposite ends of a metal plate to form a main surface and supports, each of which has a height equal to the depth of a support seat of each sewer wall; cutting the metal plate along a longitudinal central line of each of a plurality of water drain slot formation portions to the length of each water drain slot to be formed; cutting the metal plate at each of opposite ends of the cut longitudinal central line of each water drain slot formation portion in lateral opposite directions of the cut longitudinal central line to lengths corresponding to the height of the support; and bending the cut water drain slot formation portions of the metal plate downwards and forming the slot frame parts.
  • the present invention provides a method of manufacturing a grating using a pressing process, comprising the steps of: bending opposite ends of a metal plate to form a main surface and supports, each having a predetermined height; drawing a plurality of water drain slot formation portions of the main surface to form slot frame parts, each having a predetermined depth; perforating bottoms of the slot frame parts to form water drain slots; uniting front surface members to opposite ends of the supports; and charging a filling material into a space defined by the main surface, the supports and the front surface members.
  • the present invention provides a method of manufacturing a grating using a pressing process, comprising the steps of: drawing a plurality of water drain slot formation portions of a main surface of a metal plate to form slot frame parts, each having a predetermined length; and perforating bottoms of the slot frame parts to form water drain slots.
  • the present invention provides a method of manufacturing a grating using a pressing process, comprising the steps of: bending opposite ends of a metal plate to form a main surface and supports, each having a predetermined height; drawing a plurality of first water drain slot formation portions of the main surface to form first slot frame parts, each having a predetermined depth; drawing parts between lower ends of the first slot frame parts to form a plurality of second slot frame parts; perforating bottoms of the second slot frame parts to form a plurality of water drain slots; uniting front surface members to opposite ends of the supports; and charging a filling material into a space defined by the main surface, the supports and the front surface members.
  • the present invention provides a grating, which can sustain a relatively heavy load despite being manufactured through a simple pressing process, and a method of manufacturing the same through the pressing process.
  • FIG. 1 is a perspective view showing the construction of a conventional grating
  • FIG. 2 is a perspective view showing the construction of a grating manufactured through a pressing process, according to a first embodiment of the present invention
  • FIG. 3 is a bottom perspective view of the grating of FIG. 2 ;
  • FIG. 4 is a perspective view showing the construction of a grating manufactured through a pressing process, according to a modification of the first embodiment of the present invention
  • FIG. 5 is a front sectional view showing the grating placed on a support seat of a sewer wall according to the first embodiment of the present invention
  • FIG. 6 is a front sectional view showing a grating according to the first embodiment placed on slope support seats of sewer walls;
  • FIG. 7 is a perspective view showing the construction of a grating manufactured through a pressing process, according to a second embodiment of the present invention.
  • FIGS. 8 and 9 are perspective views showing the construction of a grating manufactured through a pressing process, according to a third embodiment of the present invention.
  • FIG. 10 is a front sectional view showing the grating according to the third embodiment placed on support seats of sewer walls;
  • FIG. 11 is a front sectional view showing a modification of the fourth embodiment of the present invention.
  • FIG. 12 is a perspective view showing the construction of a grating manufactured through a pressing process, according to a fourth embodiment of the present invention.
  • FIG. 13 is a front sectional view showing the grating placed on the sewer walls according to the fourth embodiment of the present invention.
  • FIG. 14 is a front sectional view showing installation of a grating manufactured through a pressing process, according to a fifth embodiment of the present invention.
  • FIG. 15 is a front sectional view showing installation of a grating manufactured through a pressing process, according to a sixth embodiment of the present invention.
  • FIG. 16 is a front sectional view showing installation of a grating manufactured through a pressing process, according to a sixth embodiment of the present invention.
  • FIG. 2 is a perspective view showing the construction of a grating 1 manufactured through a pressing process, according to a first embodiment of the present invention.
  • FIG. 3 is a bottom perspective view of the grating 1 of FIG. 2 .
  • the grating 1 includes two supports 4 , which are formed by bending opposite ends of a metal plate.
  • a plurality of water drain slots 2 is formed through a main surface 5 .
  • the water drain slots 2 are defined in respective slot frame parts 4 , which are formed by pressing parts of the metal plate downwards, that is, by deep-drawing the main surface 5 using a machining means such as a press machine.
  • Each slot frame part 4 is deep-drawn at an appropriate pressure such that it has the same height as the supports 4 , and, thereafter, is perforated.
  • FIG. 4 is a perspective view showing the construction of a grating manufactured through a pressing process, according to a modification of the first embodiment.
  • the modification of the first embodiment of FIG. 4 has a structure in which the width of each water drain slot 2 is relatively narrow and a plurality of through holes 8 is formed in a part between adjacent water drain slots 2 to ensure smooth drainage.
  • FIG. 5 is a front sectional view showing the grating 1 of the first embodiment placed on support seats 40 of sewer walls 30 .
  • the height of the supports 4 is equal to the height (h) of the support seats 40 of the sewer wall, such that the grating 1 of the present invention does not interfere with a person or object passing over it after having been placed on the support seats 40 of the sewer wall.
  • each slot frame part 3 is greater than the width (t) of a sewer 20 but is less than the distance (T) between the support seats 40 of sewer walls. Therefore, opposite ends of the slot frame parts 3 are placed on bottoms 41 of the support seats 40 of sewer walls, so that the slot frame parts 3 can serve as support bodies along with the supports 4 . Thus, even if a large load is applied to the main surface 5 , the grating can sustain the load.
  • FIG. 6 is a front sectional view showing a grating 1 according to the first embodiment placed on slope support seats 40 of sewer walls 30 .
  • the support seats 40 of the sewer walls 30 are slanted, and the support 4 is bent at an angle, at which the support seat 40 of the sewer wall 30 is slanted.
  • FIG. 7 is a perspective view showing the construction of a grating 1 manufactured through a pressing process, according to a second embodiment of the present invention.
  • the method of forming supports 4 by bending the opposite ends of a metal plate is the same as that of the first embodiment, but the method of forming both a water drain slot 2 and a slot frame part 3 differs from that of the first embodiment.
  • the opposite ends of the slot frame parts 3 are placed on bottoms 41 of support seats 40 of sewer walls, so that the slot frame parts 3 can serve as support bodies along with the supports 4 .
  • the grating can sustain the load.
  • a method of manufacturing the grating 1 according to the second embodiment includes the step of bending the opposite ends of a metal plate to form the main surface 5 and the supports 4 , each of which has a height equal to the depth (h) of the support seat 40 of each sewer wall 30 .
  • the method further includes the step of cutting the metal plate along a longitudinal central line of each of a plurality of water drain slot formation portions to the length of each water drain slot 2 to be formed.
  • the method further includes the step of cutting the metal plate at each of opposite ends of the cut longitudinal central line of each water drain slot formation portion in lateral opposite directions of the cut longitudinal central line to lengths corresponding to the height of the support 4 .
  • the method further includes the step of bending the cut water drain slot formation portions of the metal plate downwards and forming the slot frame parts 3 .
  • FIGS. 8 and 9 are perspective views showing the construction of a grating 1 manufactured through a pressing process, according to a third embodiment of the present invention.
  • a front surface member 6 is provided on each of open front and rear sides of the grating and fastened at opposite ends thereof to respective supports 4 by welding or the like. Thereafter, the grating 1 is turned upside down such that it has a box shape, which is open at an upper surface thereof. Subsequently, as shown in FIG. 9 , the grating 1 is filled with filling material.
  • Stone synthetic resin, such as polyurethane, or rubber is used as filling material.
  • colored pebbles are charged into spaces in the grating other than water drain slots, thus providing a grating 1 that is solid and has a good appearance.
  • FIG. 10 is a front sectional view showing the grating 1 according to the third embodiment placed on support seats 40 of sewer walls.
  • the grating can sustain the load.
  • the filling material 7 which is charged into the space defined between the supports 4 and the slot frame parts 3 , serves as another support body, thus providing a stronger structure.
  • a method of manufacturing the grating 1 according to the third embodiment includes the step of bending the opposite ends of a metal plate to form a main surface 5 and the supports 4 , each of which has a height equal to the depth (h) of the support seat 40 of each sewer wall 30 .
  • the method further includes the step of deep-drawing a plurality of water drain slot formation portions on the main surface 5 such that the water drain slot formation portions of the metal plate are depressed by the height of the supports 4 , thus forming the slot frame parts 3 .
  • the method further includes the step of perforating bottoms of the slot frame parts 3 to form water drain slots 2 , and the step of uniting the opposite ends of the supports 4 to the related front surface member 6 .
  • the method further includes the step of charging the filling material 7 into a space defined by the main surface 5 , the supports 4 and the front surface members 6 .
  • FIG. 11 is a front sectional view showing a modification of the third embodiment of the present invention.
  • first slot frame parts 3 are formed by deep-drawing the surface of the grating by a predetermined depth less than the height (h) of the supports 4 .
  • second slot frame parts 9 are formed by deep-drawing the surface from the lower ends of the first slot frame parts 3 by the height of the supports 4 using a smaller press machine.
  • a plurality of water drain slots 2 is perforated.
  • the grating 1 is thereafter turned upside down, and filling material 7 is charged into a space defined in the grating 1 .
  • the method of manufacturing the grating 1 according to the modification of the third embodiment includes the step of bending the opposite ends of a metal plate to form a main surface 5 and the supports 4 , each of which has a height equal to the depth (h) of the support seat 40 of each sewer wall 30 .
  • the method further includes the step of deep-drawing a plurality of first water drain slot formation portions on the main surface 5 such that the first water drain slot formation portions of the metal plate are depressed by a predetermined depth, thus forming the first slot frame parts 3 .
  • the method further includes the step of deep-drawing parts between the lower ends of the first slot frame parts 3 to form a plurality of second slot frame parts 9 .
  • the method further includes the step of perforating bottoms of the second slot frame parts 9 to form water drain slots 2 , and the step of uniting the opposite ends of the supports 4 to the related front surface member 6 .
  • the method further includes the step of charging the filling material 7 into a space defined by the main surface 5 , the supports 4 and the front surface members 6 .
  • FIG. 12 is a perspective view showing the construction of a grating 1 manufactured through a pressing process, according to a fourth embodiment of the present invention.
  • the grating 1 according to the fourth embodiment has a structure suitable for a “U”-shaped sewer 20 having no support seat 40 on a sewer wall 30 .
  • the step of forming the supports 4 is eliminated, unlike the first embodiment.
  • the method of manufacturing the grating 1 according to the fourth embodiment includes the step of deep-drawing a plurality of water drain slot formation portions on the upper surface of a metal plate such that the water drain slot formation portions of the metal plate are depressed by a predetermined depth, thus forming slot frame parts 3 .
  • the method further includes the step of perforating the bottoms of the slot frame parts 3 to form water drain slots 2 .
  • FIG. 13 is a front sectional view showing the grating placed on the sewer walls 30 according to the fourth embodiment of the present invention.
  • the slot frame parts 3 are disposed in the sewer 30 , while the opposite ends of the main surface 5 are placed on the respective sewer walls 30 .
  • the slot frame parts 3 have appropriate thicknesses and disperse load applied to the main surface 5 , so that the grating can sustain a relatively heavy load.
  • FIGS. 14 through 16 illustrate modifications of the first through fourth embodiments adapted to the case in which the height of the support seat 40 differs from that of the grating.
  • FIG. 14 is a front sectional view showing the installation of a grating 1 manufactured through a pressing process, according to a fifth embodiment of the present invention.
  • the grating 1 of this embodiment includes a subsidiary height adjustment frame 50 , which is welded both to the slot frame part 3 and each support 4 to adapt to the height of support seats 40 of the sewer walls 30 , which is different from that of the grating. In other words, this embodiment can adapt to the height of various support seats 40 .
  • FIG. 15 is a front sectional view showing the installation of a grating 1 manufactured through a pressing process, according to a sixth embodiment of the present invention.
  • subsidiary height adjustment frames 50 are attached to the surface of a grating 1 which is turned upside down.
  • the subsidiary height adjustment frames 50 are welded to a main surface 5 .
  • filling material 7 is charged into the grating 1 which is adjusted in height.
  • FIG. 16 is a front sectional view showing installation of a grating 1 manufactured through a pressing process, according to a seventh embodiment of the present invention.
  • each support 4 is bent such that the height thereof is greater than the depth of a slot frame part 3 and, thereafter, the support 4 is bent several times at 90°, thus forming a multiply bent part 4 a .
  • Each of the opposite ends of the slot frame parts 3 is in close contact with the related multiply bent part 4 a , so that the slot frame parts 3 are supported on the multiply bent parts 4 a .
  • the grating 1 of this embodiment has a structure such that the height thereof can be adjusted without a welding process for a separate subsidiary frame 50 .
  • the present invention is not limited to this.
  • the present invention can be applied to various kinds of gratings, such as a tree support grating, which is placed on the upper end of a tree protective unit, which is installed around a tree to protect it.
  • a tree support grating which is placed on the upper end of a tree protective unit, which is installed around a tree to protect it.
  • these modifications fall within the bounds of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)
US11/814,881 2005-01-27 2006-01-26 Grating Using Press Process and Method Thereof Abandoned US20080135466A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020050007404A KR100526769B1 (ko) 2005-01-27 2005-01-27 프레스 가공을 이용한 그레이팅 및 그 제조방법
KR10-2005-0007404 2005-01-27
PCT/KR2006/000301 WO2006080810A1 (en) 2005-01-27 2006-01-26 A grating using press process and method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8693164B2 (en) 2008-12-12 2014-04-08 Epcos Ag Electrical multi-layered component and circuit arrangement comprising the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101054695B1 (ko) 2008-07-04 2011-08-09 유림해일주식회사 스틸 그레이팅 및 이의 제조방법
KR101527451B1 (ko) * 2008-12-23 2015-06-11 재단법인 포항산업과학연구원 수목 보호대 제조 방법
KR101536955B1 (ko) * 2014-04-01 2015-07-15 글로벌피앤에프주식회사 친환경 목분 복합체를 이용한 그레이팅의 제조방법
KR102349396B1 (ko) * 2020-02-12 2022-01-07 전나래 다양한 규격의 그레이팅을 하나의 프레스 금형으로 제조하는 방법 및, 이 제조방법으로 제조된 그레이팅

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1271787A (en) * 1917-12-05 1918-07-09 Andrew Smith Manufacture of perforated metal for drainage-casings, screens, &c.
US1494823A (en) * 1921-07-13 1924-05-20 Tappen Alexander Bonnell Metal grating
US1650055A (en) * 1926-10-15 1927-11-22 Harold G Tregillus Forged grating and methods of manufacturing same
US2051639A (en) * 1935-09-19 1936-08-18 Gen Electric Wiring grille and method of making the same
US4367142A (en) * 1981-03-19 1983-01-04 Twb-Pressteile Gmbh Grate for drainage ducts
US6167601B1 (en) * 1995-09-22 2001-01-02 Conrad American Method for manufacturing ventilated sheet-metal floor members
US7066685B2 (en) * 2004-04-14 2006-06-27 Aco Polymer Products, Inc. Drainage grate

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2543841B2 (ja) * 1993-02-01 1996-10-16 岡島工業株式会社 金属製溝蓋
JP2001115544A (ja) * 1999-10-14 2001-04-24 Nippon Kinzoku Co Ltd 溝蓋及びその製造方法
JP2002250074A (ja) * 2001-02-23 2002-09-06 Nimura:Kk グレーチング

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1271787A (en) * 1917-12-05 1918-07-09 Andrew Smith Manufacture of perforated metal for drainage-casings, screens, &c.
US1494823A (en) * 1921-07-13 1924-05-20 Tappen Alexander Bonnell Metal grating
US1650055A (en) * 1926-10-15 1927-11-22 Harold G Tregillus Forged grating and methods of manufacturing same
US2051639A (en) * 1935-09-19 1936-08-18 Gen Electric Wiring grille and method of making the same
US4367142A (en) * 1981-03-19 1983-01-04 Twb-Pressteile Gmbh Grate for drainage ducts
US6167601B1 (en) * 1995-09-22 2001-01-02 Conrad American Method for manufacturing ventilated sheet-metal floor members
US7066685B2 (en) * 2004-04-14 2006-06-27 Aco Polymer Products, Inc. Drainage grate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8693164B2 (en) 2008-12-12 2014-04-08 Epcos Ag Electrical multi-layered component and circuit arrangement comprising the same

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KR100526769B1 (ko) 2005-11-08
WO2006080810A1 (en) 2006-08-03

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