Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
  • B26D1/0006—Cutting members therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D7/27—Means for performing other operations combined with cutting
• • 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
  • B28B11/16—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for extrusion or for materials supplied in long webs
  • B28B11/163—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for extrusion or for materials supplied in long webs in which the cutting device is moved longitudinally with the moving strand
• • 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
  • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
  • B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
  • B28B5/026—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length
  • B28B5/028—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length the moulding surfaces being of definite length, e.g. succession of moving pallets, and being continuously fed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
  • B26D1/0006—Cutting members therefor
  • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

• the invention relates to a tool for trimming and shaping the foot-side edge of a profiled concrete roof blank manufactured in the extrusion process, the tool having a holder, a cutting plate provided with a cutting edge and a shaped body.
• Bracket attachable to a pneumatic cylinder moving the tool.
• a cutting plate is screwed to the holder, to which a molded body made of wear-resistant plastic is attached.
• the tool is usually at an angle to the vertical transverse plane of the foot
• Concrete roof tile blank made so that the cutting plate makes an oblique cut, in which a short piece is cut off from the foot-side edge of the concrete roof tile blank and the foot-side edge is deformed by the molded body.
• the force required to form the foot-side edge is transmitted through the cutting plate from the holder to the shaped body, so that the cutting plate is exposed to high impact and bending stress when the tool is inclined.
• the cutting insert is also subjected to severe abrasion. Since the insert of the known tool is made of a tough but not abrasion-resistant material due to the much more critical impact and bending stress, the service life of the tool is very short. In order to increase the service life of the tool, tests were carried out in which the surface of the cutting plate was hardened or provided with an abrasion-resistant coating. However, such attempts did not produce a satisfactory result because the wear-resistant but brittle layers became cracked and finally flaked off the cutting insert.
• the object of the present invention is to provide a tool for trimming and shaping a concrete roof tile blank of the type mentioned at the outset, which has a significantly longer service life.
• the holder and the molded body is integrally formed as a support body with a recess for the material and positive reception of the cutting plate, that the cutting plate is made of hard metal and glued into the recess, and that the cutting plate with its upper edge abuts at least one projection of the support body.
• the insert Due to the one-piece design of the holder and molded body, the force required to form the foot-side edge is conducted directly from the holder into the molded body. In this way, the insert remains free from impact and bending stresses even when the tool is tilted, so that it is possible to adapt the material of the insert specifically to the abrasion stress.
• the insert is therefore made of a brittle, but much more abrasion-resistant material than was previously the case.
• Cutting insert has a 10 times longer service life than the known tool.
• a particularly secure cohesive connection of the insert and support body can be achieved if the side of the insert facing the support body rests on the support body with at least 2/3 of its surface within the recess, so that a large adhesive surface is present.
• the cutting plate of the tool can be made of a special hard metal, which in addition to high abrasion resistance also has high toughness.
• Group G 40 hard metal is preferably used.
• Concrete roof tile blanks can be formed on a profiled lower mold and therefore have a profiling on their underside.
• the cutting edge of the cutting plate can have a contour provided with recesses of different depths, the depth T of the recesses being the height of the profile on the underside of the
• Concrete roof tile blank corresponds.
• the contour of the cutting edge also corresponds to the profiled surface of the lower mold on which the concrete roof tile blank was formed.
• the side folds and the central brim are higher than the watercourses arranged between the central brim and the side fold.
• the foot-side edge should run at least in the area of its lower edge in the foot-side vertical transverse plane to the concrete roof tile blank. This can be achieved in a simple manner if the cutting plate of the tool set at an angle ⁇ to the vertical transverse plane at the foot has curvatures in plan view whose respective curvature x is proportional to the depth T of the recesses of the contour of the cutting edge and to sin ⁇ .
• Fig. 2 shows the inventive tool shown in Fig. 1 in front view
• Fig. 3 shows the cutting plate of the tool shown in Figs. 1 and 2 in plan view.
• FIG. 1 shows a cross section of a tool 10 according to the invention for trimming and shaping an edge 12 on the foot side of a profiled concrete roof blank 14 produced in the extrusion process.
• the tool 10 has a holder 16, one with a Cutting edge 18 provided cutting plate 20 and a molded body 22.
• the holder 16 and the molded body 22 are formed in one piece as a support body 24 with a recess 26 for the material and form-fitting reception of the cutting plate 20.
• Cutting plate 20 is glued into the recess 26, the side of the cutting plate 20 facing the supporting body 24 abutting the supporting body 24 with approximately 2/3 of its surface within the recess 26.
• the recess 26, which extends over the entire width of the support body 24, has in its upper region a projection 28 which is designed as a continuous abutting edge and against which the cutting edge 20 abuts with its upper edge.
• the profiled concrete roof tile blank 14 has side folds, a water course 30 and a central rim 32 which is higher than the water course 30.
• the underside of the concrete roof tile blank 14 is provided with a profile running parallel to the top of the concrete roof tile blank 14, which was molded into the underside of the concrete roof tile blank 14 by a correspondingly profiled lower mold 34.
• the cutting plate 20 is provided with curvatures.
• the tool 10 according to the invention is shown in the front view.
• the cutting plate 20 bonded to the support body 24 has a cutting edge 18 for cutting a concrete roof tile blank profiled on the underside, which has a contour provided with recesses 40, 42, 44, 46, 48 of different depths.
• Recesses 40, 42, 44, 46, 48 correspond to the height of the profile on the underside of the concrete roof blank.
• the cutting plate 20 of the tool 10 shown in Figs. 1 and 2 is shown in plan view.
• the cutting plate 20 is provided with curvatures 50, 52, 54, 56, 58.
• the curvature of the curvatures 50, 52, 54, 56, 58 denoted by the letter x is proportional to the respective depth T of

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Structural Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Processing Of Stones Or Stones Resemblance Materials (AREA)
• Press-Shaping Or Shaping Using Conveyers (AREA)
• Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
• Cutting Tools, Boring Holders, And Turrets (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7765970

Family Applications (1)

Country Status (12)

Families Citing this family (1)

Family Cites Families (9)

• 1995
  • 1995-07-04 DE DE19524315A patent/DE19524315C1/de not_active Expired - Fee Related
• 1996
  • 1996-06-22 WO PCT/DE1996/001143 patent/WO1997002123A1/de not_active Application Discontinuation
  • 1996-06-22 JP JP9504704A patent/JPH10511050A/ja active Pending
  • 1996-06-22 EE EE9700358A patent/EE9700358A/xx unknown
  • 1996-06-22 HU HU9802872A patent/HUP9802872A3/hu unknown
  • 1996-06-22 EP EP96920717A patent/EP0836547A1/de not_active Withdrawn
  • 1996-06-22 CZ CZ19974243A patent/CZ286190B6/cs not_active IP Right Cessation
  • 1996-06-22 PL PL96323560A patent/PL323560A1/xx unknown
  • 1996-06-22 SK SK1797-97A patent/SK179797A3/sk unknown
• 1997
  • 1997-12-12 BG BG102117A patent/BG62280B1/bg unknown
• 1998
  • 1998-01-02 NO NO980003A patent/NO980003L/no unknown
  • 1998-01-02 US US09/002,455 patent/US6074589A/en not_active Expired - Fee Related

Non-Patent Citations (1)

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