US3484913A - Device for plane cutting the surfaces of moulded blocks of lightweight concrete or similar material - Google Patents

Device for plane cutting the surfaces of moulded blocks of lightweight concrete or similar material Download PDF

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Publication number
US3484913A
US3484913A US677944A US3484913DA US3484913A US 3484913 A US3484913 A US 3484913A US 677944 A US677944 A US 677944A US 3484913D A US3484913D A US 3484913DA US 3484913 A US3484913 A US 3484913A
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US
United States
Prior art keywords
cutting
wires
shaft
supporting plates
plates
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
US677944A
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English (en)
Inventor
Per Jakobsson
Stig Lonnberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JAKOBSSON
Ytong AG
Original Assignee
JAKOBSSON
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JAKOBSSON filed Critical JAKOBSSON
Application granted granted Critical
Publication of US3484913A publication Critical patent/US3484913A/en
Assigned to YTONG AG reassignment YTONG AG ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTONG AB, A SWEDEN CORP
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0036—Cutting means, e.g. water jets
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type

Definitions

  • a rotary wire-type plane cutter for moulded blocks of lightweight concrete comprising a number of supporting plates mounted on a shaft at spaced intervals to form a series of compartments.
  • the cutting wires are stretched over the supporting plates in an arrangement wherein each of the wires alternately extend in a straight unbroken line between the supporting plates forming one compartment but are drawn inwardly toward the shaft while passing over the supporting plates forming the next compartment.
  • the present invention relates to cutting devices and more particularly to devices for plane cutting the surfaces of moulded blocks of lightweight concrete or similar material.
  • a number of cutting devices have been used in the removal of excess material produced in the casting of a raw mixture of lightweight concrete.
  • One such device comprises a plurality of circular supporting plates fixed on a shaft at suitable distances from each other with the two outermost supporting plates dimensioned so that cutting wires can be stretched over them.
  • This prior art device is combined with a screw conveyer and includes inner supporting plates which serve as intermediate supports for and to prevent dislocation of the cutting wires.
  • the cutting wires themselves are firmly fixed at the hub of one of the outermost supporting plates and extend through outlets in the periphery of the plate to the second outermost supporting plate.
  • the cutting wires are attached to the hub of the second supporting plates through springs and may be tightened to vary the tension thereon.
  • This particular form of wire cutter is generally superior to other known prior art devices used for the same purpose but it is still subject to certain disadvantages. Chief among these disadvantages is the problem of occasional wire breakage. Wire breakage results in, first, rejection of the portion of the moulded block being cut during the time the breakage occurs and secondly, stoppage of the cutting process for the rather substantial length of time required for removal of the broken wire and the substitution of a new wire. It is apparent that if wire breakages occur often the cutting device cannot be successfully utilized in a production line process in which each work operation must be performed within a predetermined amount of time.
  • the cutting wires are arranged to alternately extend in an unbroken line between support plates forming one compartment while being drawn down inwardly toward the shaft mounting the supporting plates while passing over the supporting plates forming the next compartment. This arrangement ensures that the cutting wires will remain in a fixed position against the supportnig plates thereby precluding a characteristic sliding movement of the wires against the supporting plates. This sliding movement causes rubbing and Wear of the wires and ultimately breakage thereof.
  • FIG. 1 is a top view of the cutting; device in accordance with a presently preferred embodiment of the invention,
  • FIG. 2 is an end view of the cutting device of FIG. 1, and
  • FIG. 3 is a sectional view taken along lines AA in FIG. 1.
  • a wire cutter 10 which comprises a shaft 11 fixedly mounting a number of circular supporting plates 12. Plates 12 are equally spaced along the length of the shaft and divide the shaft into a series of compartments 13 to 17. A plurality of cutting wires, five of which denoted 18 through 22 are shown in FIG. 1, are stretched over the. supporting plates 12 between hubs 23 and 24 located on shaft 11, Cutting wires 18 to 22 are firmly fixed at hub 23 and are attached to opposite hub 24 via springs 25. Wires 18 to 22 may be tightened at hub 24 to adjust the tensioning on the wires.
  • each of the cutting wires 18 to 22 are arranged to extend in a straight, unbroken line between support plates forming one compartment but are drawn inwardly toward shaft 11 while passing over the support plates forming the next compartment.
  • the drawing or pulley of the wires 18 to 22 toward shaft 11 is accomplished through the use of circular fastening plates 26 which are fixed on the shaft 11 at locations intermediate to the supporting plates 12.
  • Hooks 27 are located on the periphery of the fastening plates 26 for securing the wires 18 to 22 to the fastening plates 26. As can best be seen in FIG. 3 hooks 27 are located in positions about the periphery of fastening plates 26 corresponding to the positions at which the wires 18 to 22 are fastened to the hubs 23, 24.
  • the cutting wires 18 to .22 are alternately drawn in toward shaft 11 and straight stretched.
  • wire 18 extends between the supporting plates 12 in a straight, unbroken line parallel to shaft 11 for compartment 17 but is drawn in toward shaft 11 and secured to fastening plate 26 for the adjacent compartment 16. In this way the cutting surface of the plane cutter of the invention is provided with an even distribution of the active cutting wires.
  • the cutting wires are alternately straight extending and drawn in, proceeding around the periphery of the cutting device 10.
  • wire 18 is straight
  • wire 19 is drawn
  • in wire 20
  • wire 21 is drawn in
  • wire 22 is straight. This sequence would, of course, continue throughout the periphery of the cutting device 10,
  • the plane cutter of the present invention produces a process surface on the moulded block which is completely plain and which shows fully open pores.
  • These good results appear to be the result of the fact that the wires 18 to 22 of the cutter 10 remain in a fixed position against the supporting plates 12 during the cutting operation.
  • the cutting wires of the prior art cutter previously described are stretched over the entire length of the cutter and are caused to bend by the pressure of the lightweight concrete mass during the cutting operation.
  • the cutting wires When cutting is terminated the cutting wires will return to their original position and thus the wires undergo a sliding movement against the supporting plates during each rotational turn of the cutter. This sliding movement causes rubbing and wear of the cutting wires and ultimately breakage thereof.
  • the cutting wires might extend in a straight line between two end supporting plates 12 of FIG.
  • the arrangement of the wires in accordance with the present invention substantially precludes such sliding motion and thus breakage caused thereby.
  • a cutting device comprising a shaft, a plurality of supporting plates mounted on said shaft at spaced distances from one another along the length of said shaft to thereby divide said cutting device into a series of compartments, and a plurality of cutting wires stretched over said supporting plates, each of said cutting wires alternately extending in an unbroken line between support plates forming one compartment while being drawn inwardly toward the shaft while passing over the support plates forming the next compartment.
  • each of said cutting wires drawn inwardly toward the shaft are further supported at a point inwardly of the outer diameter of said support plates at a location intermediate to the plates forming the compartment.
  • a cutting device in accordance with claim 3 further comprising circular fastening plates provided with hooks about the periphery thereof for securing said cutting wires at points inwardly of the outer diameter of said support plates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
US677944A 1966-11-04 1967-10-25 Device for plane cutting the surfaces of moulded blocks of lightweight concrete or similar material Expired - Lifetime US3484913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15126/66A SE307097B (no) 1966-11-04 1966-11-04

Publications (1)

Publication Number Publication Date
US3484913A true US3484913A (en) 1969-12-23

Family

ID=20300179

Family Applications (1)

Application Number Title Priority Date Filing Date
US677944A Expired - Lifetime US3484913A (en) 1966-11-04 1967-10-25 Device for plane cutting the surfaces of moulded blocks of lightweight concrete or similar material

Country Status (12)

Country Link
US (1) US3484913A (no)
AT (1) AT272918B (no)
BE (1) BE706370A (no)
CH (1) CH456432A (no)
DE (1) DE1652527B1 (no)
DK (1) DK119098B (no)
ES (1) ES346684A1 (no)
FI (1) FI44878C (no)
GB (1) GB1172605A (no)
NL (1) NL148530B (no)
NO (1) NO118782B (no)
SE (1) SE307097B (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113070990A (zh) * 2021-04-14 2021-07-06 醴陵市浦口电瓷制造有限公司 一种用于陶瓷产品加工的切泥设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE758944A (fr) * 1969-11-14 1971-04-16 Intong Ab Procede et installation pour diviser et/ou faconner un corps coule plastique
DE3520716A1 (de) * 1985-06-10 1986-12-11 Ytong AG, 8000 München Mauerstein

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA540264A (en) * 1957-04-30 A. H. Jakobsson Per Apparatus for cutting building blocks and the like
US2896298A (en) * 1953-01-27 1959-07-28 Casius Corp Ltd Apparatus particularly for the removal of the upper expansion layer from open casting moulds in the manufacture of porous light-weight concrete

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA540264A (en) * 1957-04-30 A. H. Jakobsson Per Apparatus for cutting building blocks and the like
US2896298A (en) * 1953-01-27 1959-07-28 Casius Corp Ltd Apparatus particularly for the removal of the upper expansion layer from open casting moulds in the manufacture of porous light-weight concrete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113070990A (zh) * 2021-04-14 2021-07-06 醴陵市浦口电瓷制造有限公司 一种用于陶瓷产品加工的切泥设备

Also Published As

Publication number Publication date
FI44878B (no) 1971-09-30
CH456432A (de) 1968-07-31
SE307097B (no) 1968-12-16
NO118782B (no) 1970-02-09
NL6714869A (no) 1968-05-06
DK119098B (da) 1970-11-09
DE1652527B1 (de) 1971-06-09
ES346684A1 (es) 1968-12-16
AT272918B (de) 1969-07-25
GB1172605A (en) 1969-12-03
FI44878C (fi) 1972-01-10
NL148530B (nl) 1976-02-16
BE706370A (no) 1968-03-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: YTONG AG,GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTONG AB, A SWEDEN CORP;REEL/FRAME:004264/0809

Effective date: 19840229

Owner name: YTONG AG, 3, D-8000 MUNICH 40, GERMANY A CORP. OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTONG AB, A SWEDEN CORP;REEL/FRAME:004264/0809

Effective date: 19840229