A cutting machine including an endless band knife, the band knife being guided in opposed directions in a revolution zone of the band knife forming a cutting zone, and including a first and a second deflecting device for deflecting and returning the band knife. The first and the second deflecting devices each deflect and return the band knife without a reverse bending cycle.
B23D 55/08 - Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades
2.
Method for cutting block materials and cutting machine for cutting block materials
A method for the cutting of block materials, particularly foamed or expanded materials, wherein a knife element having first and second ends is driven in a translatory manner in longitudinal direction so as to perform a reciprocating movement. The driving force is exerted on the first and second end of the knife element, the driving of the first end of the knife element being performed by conversion of a first rotary movement into a first translatory movement, and the driving of the second end of the knife element being performed by conversion of a second rotary movement into a second translatory movement in a sense opposed to that of the first translatory movement.
B27B 3/00 - Gang saw millsOther sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
B26D 5/08 - Means for actuating the cutting member to effect the cut
B23D 51/12 - Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular partsCarrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for use with tools, dealt with in this subclass, which are connected to a carrier at both ends, e.g. bows adjustable in length or height
B23D 51/16 - Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular partsCarrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
B23D 57/00 - Sawing machines or sawing devices not covered by one of groups
B26D 1/10 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
B26D 1/547 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
B26D 3/00 - Cutting work characterised by the nature of the cut madeApparatus therefor
In a cutting machine (1) with a rotating band blade (3), wherein the band blade (3) is moved in opposite directions in a circulation section (5) of the band blade (3) that forms a cutting section (7), and with a first and a second deflection device (9, 11) for redirecting and returning the band blade (3), provision is made that the first and the second redirection device (9, 11) each deflect the band blade without a reverse bending cycle and return it again.
A thin layer is cut from a foam material body using a band-knife. A take-off device that lifts and removes the layer from the cutting site, includes a belt conveyor with an electrostatically chargeable conveyor element. The layer is lifted and removed from the cutting site by electrostatic attraction to the conveyor element.
B26D 7/32 - Means for performing other operations combined with cutting for conveying or stacking cut product
B26D 3/28 - Splitting layers from workMutually separating layers by cutting
B26D 1/46 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like
B26D 7/18 - Means for removing cut-out material or waste
5.
METHOD FOR CUTTING BLOCK MATERIALS AND CUTTING MACHINE FOR CUTTING BLOCK MATERIALS
The invention relates to a method for cutting block materials, in particular foamed or expanded materials, wherein a cutter element (5) having a first and a second end (5a, 5b) is driven in a translatory manner to perform a movement to and fro in the longitudinal direction. The first and second ends (5a, 5b) of the cutter element (5) are driven, wherein the drive of the first end (5a) of the cutter element (5) takes place by transforming a first rotary movement into a first translatory movement and the drive of the second end (5b) of the cutter element (5) takes place by transforming a second rotary movement into a second translatory movement that is in the same direction as the first translatory movement. Based on complete revolutions, the rotational speed of the first rotary movement is the same as the rotational speed of the second rotary movement, and, when there is a reversal of the first and second rotary movements, the first rotary movement has a greater angular velocity in a first and a second portion of the revolution than the second rotary movement and the second rotary movement has a greater angular velocity than the first rotary movement in a third and a fourth portion of the revolution, and the first and second rotary movements have the same angular velocity at the beginning and end of a revolution and at the transition between the second and third portions of the revolution.
B23D 51/16 - Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular partsCarrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
B23D 57/00 - Sawing machines or sawing devices not covered by one of groups
B26D 1/10 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
B26D 1/547 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
B26D 3/00 - Cutting work characterised by the nature of the cut madeApparatus therefor
B26D 5/00 - Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
B26D 5/08 - Means for actuating the cutting member to effect the cut
The invention relates to splitting off a thin layer (16) from a foam body (11) by means of a band knife (12). A removal device (20) lifting and removing the layer (16) from the cutting point comprises a belt conveyor (21) having a conveyor element (22) that can be electrostatically charged. Lifting and removing the layer (16) from the cutting point is done by the electrostatic attraction to the conveyor element.
The invention relates to a foam cutting machine having an continuous, band-shaped knife (11) and having an oscillating device (24) which drives the knife in the knife plane and perpendicular to the knife edges in an oscillating manner. The effect of a serrated or waved knife is thus achieved although the knife has a straight front knife edge (11b). Said type of knife provides the option of resharpening and does not have the disadvantages of wave-shaped or serrated knives.
B62D 1/00 - Steering controls, i.e. means for initiating a change of direction of the vehicle
B26D 1/46 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like
B26D 7/08 - Means for treating work or cutting member to facilitate cutting
B23D 55/08 - Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades
According to the method, in an initial peeling phase (AP), the block of material (10) is spirally peeled. Subsequently, there is a transitional phase (UP) of a fraction of a revolution in order to change over to the desired layer thickness. In the following peeling phase (SP), the same spiral pitch is used as in the initial stripping phase. During each revolution of the block of material, the blade is lowered to an increased depth into the block of material in a limited angular range (22) and, subsequently, the revolution is completed with the pitch of the initial peeling phase. Advantages are obtained by the desired layer thickness being achieved within fractions of a revolution. The method can be carried out with little time being spent and low material wastage.
The cutting machine comprises a horizontal knife (17) for cutting a block (40) into plates (41). To allow for removal of a stack of plates (42) before the whole block (40) has been cut, a removal means comprising a removal conveyor (32) is provided. After completion of the last cut, the knife (17), after reversal of its cutting edge, will be entered into the cutting gap (43) again and be lifted, thus allowing a separating member (34) of the removal conveyor (32) to enter the resultant gap (44). By driving the conveyer belt (12), the stack of plates (42) is transferred onto the removal conveyor (32).
The invention relates to a cutting machine comprising a horizontal blade (17) for cutting a block (40) into slabs (41). A removal device comprising a removal conveyor (32) is provided in order to be able to remove a stack of slabs before the block (40) is completly cut. Said blade (17) is turned after completion of the last step and reintroduced into the cutting cerf (43) and lifted such that the removal conveyor (32) can engage with a separation element (34) in the thus produced gap (44). The stack of slabs (42) is transferred on the removal conveyor (32) by driving the conveyor belt (12).
patents
