US3727496A - Method of and apparatus for cutting up semi-plastic light weight concrete bodies - Google Patents

Method of and apparatus for cutting up semi-plastic light weight concrete bodies Download PDF

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Publication number
US3727496A
US3727496A US00052372A US3727496DA US3727496A US 3727496 A US3727496 A US 3727496A US 00052372 A US00052372 A US 00052372A US 3727496D A US3727496D A US 3727496DA US 3727496 A US3727496 A US 3727496A
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US
United States
Prior art keywords
suspension device
cutting
cutting members
perforated bottom
holding means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00052372A
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English (en)
Inventor
R Goransson
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Internationella Siporex AB
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Internationella Siporex AB
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Publication date
Application filed by Internationella Siporex AB filed Critical Internationella Siporex AB
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Publication of US3727496A publication Critical patent/US3727496A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
    • B28B11/145—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for dividing block-shaped bodies of expanded materials, e.g. cellular concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0605—Cut advances across work surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8822—Edge-to-edge of sheet or web [e.g., traveling cutter]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8828—Plural tools with same drive means

Definitions

  • the cutting members pass through and are moved along in slots formed in the [52] U.S.Cl. ..83/56, 83/374, 83/451, bottom of the Suspension device their upper ends 83/614 83/618 being actuated for movement above said bottom and [51] Int. Cl. ..B26d 7/00 their lower ends being Separately actuated by driving Fleld OI ..83/45I, means mounted in a tand eparate from the Suspen 14, 22, 56 sion device but engaging therewith in a guiding manner, when cutting is effected.
  • PATENTEBAPR 1 71973 METHOD OF AND APPARATUS FOR CUTTING UP SEMI-PLASTIC LIGHT WEIGHT CONCRETE BODIES
  • This invention relates to cutting of semi-plastic bodies and, more particularly, to the cutting up of solidified but yet unhardened cellular light weight concrete bodies by passing in a horizontal direction string-like cutting members having a substantially vertical extension through said bodies.
  • a cutting bed which could in certain cases be stationary and in other cases movable and then take the form of a'truck or carriage.
  • the cutting members were commonly mounted and vertically stretched in special frameor fork-like holder means which, when the cutting bed was stationary, had to be movable and, when the cutting bed was movable, could be either stationary or movable, as desired.
  • frameor fork-like holder means which, when the cutting bed was stationary, had to be movable and, when the cutting bed was movable, could be either stationary or movable, as desired.
  • longitudinally extending slots through which the cutting members could pass, so that the lower member of each cutting frame or fork could find an unobstructed passage beneath the body supporting surface of the cutting bed.
  • the body supporting surface of the cutting bed was divided into transverse sections which could be lowered in succession from the bottom of the body to be cut in order to provide a free passage for the lower cutting frame member and then again returned to a body supporting position.
  • the cutting up of the body can take place subsequent to any desired working of the entirely free bottom of the suspended body. Immediately after cutting the body can be deposited on that same support, on which it is to be subsequently steamhardened in the autoclave. This, of course, entirely eliminates the need for some sort of cutting bed or intermediate body support in the manufacturing plant.
  • the risks of damaging the body are highly reduced if at all existing, because the contact pressure between the top of the body and the perforated bottom of the suspension device is very small compared with the contact pressure obtained between a similar body and a cutting bed supporting the entire load of the body. Accordingly the body material will show practically no tendency to stick or bind to that perforated bottom.
  • the invention is basically concerned with the proceeding above referred to in conjunction with the cutting up of a semi-plastic cellular light weight concrete body, it also includes an apparatus for carrying out said proceeding or method.
  • the objects of this part of the invention are, of course, mainly to provide suitable means to achieve the advantages referred to above.
  • FIG. 1 shows a longitudinal sectional elevation of the apparatus, a semi-plastic body being suspended therein and partly cut through in its longitudinal direction,
  • FIG. 2 is a transverse sectional elevation through the apparatus shown in FIG. 1, and
  • FIG. 3 is a fragmentary transverse sectional elevation at an enlarged scale showing in particular the design of the bottom of the suspension device forming part of the apparatus.
  • L designates a semi-plastic cellular body, viz. a solidified but yet unhardened cellular light weight concrete body, the top of which is attached by suction to the bottom side of a suspension device, generally indicated by 2, which in its turn by means of ropes 3 or in any other suitable way is suspended from a travelling trolley or the like, not shown.
  • the suspension device 2 is vertically movable and may also be horizontally moved between different stations in the manufacturing plant.
  • the suspension device 2 comprises a hood 4, the interior of which communicates with an evacuating equipment comprising a suction blower 5 mounted on top of the hood 4.
  • a suction blower 5 mounted on top of the hood 4.
  • the hood 4 has a perforated bottom 6 comprising a number of parallel beams or channel members having perforated webs, these beams being arranged in a manner to provide longitudinally extending slots 7 between them.
  • the slots 7 permit the passage and movement of string-like cutting members 8 having all a substantially vertical extension and being all moved in a horizontal direction coinciding with that of their respective slots, when cutting of the body L is effected.
  • the upper ends of the various cutting members 8 are all connected suitably through intermediary tensioning springs 10, to a common transverse attachment beam 11, the respective ends of which are connected to slides 12 being movable back and forth in synchronism along and by means of screws 13, which through suitable bevel gears and other transmissions may be driven by a motor 14.
  • the screws 13, acting also as guides for the slides 12, extend in a direction parallel to the slots 7 in the perforated bottom 6 of the suspension device 2.
  • the slides 12 may continue their movement in either direction a short distance beyond the ends of the body L in order to assure a complete cutting through of the body.
  • the body L When the body L is to be cut, it is normally resting on a casting support or a mold bottom, not shown, and the top of the semi-plastic body has just been planed in order to remove such excess of material therefrom which can hardly be avoided, when the light weight concrete mass is caused to expand in the casting mold.
  • the suspension device 2 is moved to a position straight above the body and lowered into contact with the top thereof.
  • the slides 12 are then in either one of their two end positions and the cutting members 8 are kept away in any suitable manner in order not to interfere.
  • the suction blower 5 When contact between the top of the body L and the perforated bottom 6 of the suspension device 2 is established, the suction blower 5 is started to create the necessary vacuum in the hood 4, so that the body L will be carried along when the suspension device 2 is again lifted and moved away from the casting bed to the apparatus or cutting station illustrated in the drawsuspended therefrom may first be moved to an intermediate station where appropriate working of the bottom of the body can take place, before the body is forwarded to the cutting station proper.
  • working of the body bottom which commonly includes planing and groove-cutting, may also take place at the cutting station proper and then preferably before the cutting up of the suspended body is effected.
  • a stand or frame structure which is separate from the suspension device 2 but adapted to co-operate with the latter in a guiding manner in order to closely define their relative horizontal positions, when the cutting is effected.
  • the stand comprises, in the example shown, four substantially vertical posts 16 between which the suspension device 2 can be lowered from above, and two horizontal guide beams 17 supported by each one pair of posts.
  • a slide 18 is movable under the actuation of a screw 19, the two screws 19 being synchronously driven by a motor 20 through bevel gears and suitable transmissions.
  • the two slides 18 are adapted to receive between them a cross beam member 15 serving as a holder for the lower ends of the cutting members 8.
  • the cutting members 8 may either be permanently attached to the cross beam 15 and the latter releasably connected to the slides 18, or the beam 15 may be permanently secured to the slides and the cutting members 8 be releasably attached, one by one, to the beam just before the cutting operation is started.
  • the motor 20 should, of course, be arranged to drive the slides 18 and the beam 15 substantially in synchronism with the slides 12 and the beam 11 in the suspension device 2.
  • the lower ends of the cutting members 8 can thus be moved along paths parallel with those of the upper ends of the cutting members and this, of course, is due to the fact that the suspension device 2 takes up a predetermined position in relation to the stand or, more particularly, to the posts 16 forming part thereof.
  • An accurate guidance of the suspension device 2 between the posts 16 is, in the example shown, obtained by the provision of special guide blocks 2' on the lateral sides of the suspension device, but other means may be resorted to in order to permit necessary adjustments.
  • the bottom side of the semi-plastic cellular concrete body L suspended from the suspension device 2 is completely exposed during the entire cutting operation and also before that. Consequently, the bottom of the body may easily be worked and will not be subjected to damages during the cutting up of the body.
  • the lower ends of the cutting members 8 are disconnected If desired, the suspension device with the body L from the beam or the latter disconnected from the slides 18, as the case may be, so that the suspension device 2 can again to moved in order to deposit the cut body on its steamhardening support, the suction blower 5 being then stopped so that the body is released.
  • the method of cutting up a semi-plastic cellular light weight concrete body which comprises: attaching the body by suction to a perforated bottom of a hollow suspension device while the body is still rested on a first support, separating the body from said first support while maintaining a sufficient vacuum in said suspension device to keep the body freely suspended therefrom, passing string-like cutting members having a substantially vertical extension in a horizontal direction through the suspended body while advancing the upper ends of said cutting members above said perforated bottom of the suspension device and the lower ends thereof below the free bottom surface of the body, and finally depositing the body on a second support when cutting is accomplished.
  • An apparatus for cutting up a semi-plastic cellular light weight concrete body by passing string-like cutting members having, when operative, a substantially vertical extension, in a horizontal direction therethrough and comprising, in combination an at least vertically movable, hollow suspension device having a perforated bottom for contacting the top of the body to be cut, evacuating means for creating a vacuum in said hollow suspension device that is sufficiently strong to effect adhesion of the body to said perforated bottom of the suspension device by suction and to thus permit lifting of the body by means of said suspension device, a plurality of cutting members having their upper ends located above said perforated bottom of the suspension device, parallel slots formed in said perforated bottom for permitting the cutting members to pass therethrough and to be moved in at least one direction along said bottom, first movable holding means for the upper ends of the cutting members, said first movable holding means being arranged above said perforated and slotted bottom of the suspension device, means incorporated in said suspension device to effect movement of said first holding means in directions parallel with said slots formed in the perforated
  • said first movable holding means for the upper ends of the cutting members comprises a transverse attachment beam extending between slides movable back and forth along guiding means arranged in the suspension device and extending parallel with the slots formed in the perforated bottom thereof.
  • said second movable holding means for the lower ends of the cutting members comprise a transverse attachment member common to all cutting members and releasably connectable to said means for effecting. movement thereof, when cutting is to be effected.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US00052372A 1969-07-10 1970-07-06 Method of and apparatus for cutting up semi-plastic light weight concrete bodies Expired - Lifetime US3727496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE09790/69A SE332776B (enrdf_load_stackoverflow) 1969-07-10 1969-07-10

Publications (1)

Publication Number Publication Date
US3727496A true US3727496A (en) 1973-04-17

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ID=20277539

Family Applications (1)

Application Number Title Priority Date Filing Date
US00052372A Expired - Lifetime US3727496A (en) 1969-07-10 1970-07-06 Method of and apparatus for cutting up semi-plastic light weight concrete bodies

Country Status (6)

Country Link
US (1) US3727496A (enrdf_load_stackoverflow)
JP (1) JPS4930500B1 (enrdf_load_stackoverflow)
BE (1) BE752973A (enrdf_load_stackoverflow)
DE (1) DE2034390C3 (enrdf_load_stackoverflow)
FR (1) FR2054409A5 (enrdf_load_stackoverflow)
SE (1) SE332776B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584374A (en) * 1994-02-03 1996-12-17 Heber Aktiengesellschaft Method and apparatus for row-wise separation of rectilinear, plastic porous concrete bodies
CN102941594A (zh) * 2012-11-30 2013-02-27 孙中国 一种熟地瓜自动切片装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997843A (en) * 1934-07-14 1935-04-16 Pharis Tire & Rubber Company Method and apparatus for producing openings in multi-ply flexible materials
US3173185A (en) * 1961-08-15 1965-03-16 Bergling Charles Gunnar Birger Cutting device for light weight concrete

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997843A (en) * 1934-07-14 1935-04-16 Pharis Tire & Rubber Company Method and apparatus for producing openings in multi-ply flexible materials
US3173185A (en) * 1961-08-15 1965-03-16 Bergling Charles Gunnar Birger Cutting device for light weight concrete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584374A (en) * 1994-02-03 1996-12-17 Heber Aktiengesellschaft Method and apparatus for row-wise separation of rectilinear, plastic porous concrete bodies
CN102941594A (zh) * 2012-11-30 2013-02-27 孙中国 一种熟地瓜自动切片装置

Also Published As

Publication number Publication date
DE2034390A1 (de) 1971-01-14
JPS4930500B1 (enrdf_load_stackoverflow) 1974-08-13
FR2054409A5 (enrdf_load_stackoverflow) 1971-04-16
DE2034390C3 (de) 1978-12-21
BE752973A (fr) 1970-12-16
SE332776B (enrdf_load_stackoverflow) 1971-02-15
DE2034390B2 (de) 1978-05-11

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