FI12451U1 - Blade arrangement and cross section device - Google Patents

Description

CUTTERING AND CROSS - CUTTING DEVICE

The invention relates to a blade arrangement for pulp drying machine the sheet cutter of a knife, with a knife comprises a roll mantle cavity comprising the blade arrangement surface and the first bracket for attaching the blade arrangement of the cutting roller and the counter surface, to which the blade arrangement comprising - an elongate cutting blade for cutting a pulp sheet adapted to be attached to the cutting of the roll into the recess, - arranged in an elongate guide strip to support the cutting blade against the counter surface, the guide rib comprising openings for fasteners, - fasteners comprising a socket for securing the guide bar to the counter surface by means of fasteners through the openings of the guide bar, and - adjusting means for positioning the guide bar in the radial direction of the cutting roll.

The invention also relates to a cross-sectional apparatus for a sheet-cutting machine.

In a pulp drying machine, the fibrous web is cut with a sheet cutter both longitudinally and transversely of the fibrous web to form pulp sheets. A cross-sectional machine can be used for transversely cutting the fibrous web, the rotary cutting roll of which cuts the fibrous web when the cutting blade aligns with the fibrous web opposite to the counterpart of the cross-section. The cutting blade rests directly in the recess in the radial direction of the cutting roll so that it can be adjusted independently of the guide bar. Depending on the characteristics of the fiber web to be cut, the cutting blade will either remain at a distance from the counterpart or touch it to cut the pulp sheet from the fiber web. Gradually, the cutting blade wears out and must be replaced to maintain sufficient cross-sectional reliability.

Known in the art is the Valmet Cross Cutter ™ Knife Roll Blade Arrangement, which includes a guide bar, a cutting blade, adjusting means for a guide bar and a cutting blade, and fasteners for attaching a guide bar and a cutting blade to the recess of the cutting roll roll. In such a roll arrangement, replacement of the cutting blade requires removal of the fasteners, since each fastener passes both the guide bar and the cutting blade, the cutting blade being between the guide bar and the recess. After replacing the cutting blade, the guide bar and cutting blade must be precisely aligned to restore the cutting roll's cutting efficiency. This is a laborious and skillful process that generally takes about 12 hours. Due to its long duration, replacing the cutter blade can be the most time consuming task during a maintenance outage, thus extending the maintenance downtime and thus the downtime of the pulp dryer.

Another problem with the above-mentioned prior art blade arrangement is that, in order to improve wear resistance, a hard material cutting blade is difficult to hold in place for long periods of time despite the high torque of the fasteners. In order to adjust the cutter blade relative to the guide bar, the cutter blade must have openings larger than the diameter of the fasteners. Such openings allow the cutting blade to move relative to the fasteners, at least in the radial direction of the cutting roll. Although the clamps are tightened to a high torque, the clamping clamps gradually loosen due to the vibration of the cutting roll. This will allow the cutting blade to move relative to the guide bar and reduce the function of the cutting roll.

The object of the invention is to provide a blade arrangement which is more reliable than the prior art blade arrangement and which is easier with regard to changing the cutting blade. It is also an object of the present invention to provide a more reliable cross-sectional apparatus for the prior art pulp drying machine and easier cross-cutting tool replacement. Features of the present invention will be apparent from the accompanying claim 5.

The object of the invention can be achieved by a blade arrangement in a cutting cutter roll of a sheet drying machine, which cutting roll includes a recess in the roll shell comprising a counter surface for the blade arrangement and first fasteners for attaching the blade arrangement to the counter surface of the cutting roll. The blade arrangement includes an elongated cutting blade for cutting a pulp sheet adapted to be attached to a recess in the cutting roll, an elongated guide strip adapted to support the cutting blade against a counter surface, a guide strip comprising openings for fasteners; The invention is characterized in that the guide bar includes a longitudinal steel recess of the cutting blade formed on the opposite side of the base of each fastener, adapted to lock the cutting blade between the guide bar and the counter surface by frictional locking.

Thanks to the steel recess, the cutting blade can be frictionally locked on the guide bar against the counter surface by pressing the clamping holes without using the cutting blade. At the same time, the guide strip may be supported directly on the counter surface. In this case, when replacing the cutting blade, the fasteners are opened to such an extent that the compression between the guide bar and the cutting blade can be removed so that the cutting blade can be pulled away between the guide bar and the counter blade. When installing the cutter blade, only the positioning of the guide bar is readjusted and the cutting blade resting on it adjusts to the guide bar. This avoids separate adjustments to both the control bar and the cutting blade and saves considerable time when installing the cutting blade. Since there is no separate adjustment for the cutting blade, the adjustment of the cutting blade cannot be changed when using the cutting roll as long as the guide bar position is maintained. The blade arrangement according to the invention is also simpler than the prior art blade arrangement, which reduces manufacturing costs. In the prior art, a hard cutting blade has had to make holes for fasteners, which has been a laborious task. Now, this phase of work is gone.

Preferably, the cutting blade is an unpunched piece. Such is easier to make of hard material than the prior art cutting blade comprising holes.

Preferably, the steel recess includes a friction surface parallel to the plane of the guide strip arranged to support the counter surface of the cutting blade and a bottom surface at an angle to the friction surface adapted to support the cutting blade in the direction of the plane of the guide strip. This allows precise positioning of the cutting blade both radially and tangentially to the cutting roll by positioning the guide bar alone.

Preferably, each opening has a maximum diameter of 120 to 300% of the diameter of the fastener for positioning the guide strip in the radial direction of the cutting roll. This allows radial movement of the guide strip cutting roll while the fasteners remain locked in place on the first fasteners of the counter surface, preferably the counter-threads.

According to one embodiment, each of the guide strip apertures is a slot having a longitudinal direction in the radial direction of the cutting roll for positioning the guide strip in the radial direction of the roll. The slots also allow radial movement of the guide strip cutting roll while the clips remain locked in place on the first clamps of the counter surface.

According to one embodiment, the cutting blade comprises two longitudinal support surfaces of the cutting blade adapted for positioning against a guide strip and a counter surface, and two longitudinal edge surfaces of the cutting blade, each edge having one cutting edge parallel to allowing the cutting blade to rotate about 180 °. With a double-edged cutting blade, the same cutting blade can be used for a period of twice the time before new cutting blades are needed. In the blade arrangement according to the invention, the cutting blade is preferably not sharpened but replaced after both blades have become dull.

Preferably, the cutting blade comprises two longitudinal support surfaces of the cutting blade adapted for positioning against a guide strip and a counter surface, and two edge surfaces of the cutting blade, which support surfaces and edge surfaces are continuous and continuous planar surfaces. In other words, the cutting blade does not include any openings or recesses for mounting. In this case, the cutting blade is easy to manufacture and extremely hard materials can be used.

Preferably, the cutting blade extends radially 1-5 mm farther from the center of the cutting roll than the guide bar. In this case, the cutting blade removes the cut pulp sheet from the cutting arrangement of the cutting roll and prevents the pulp sheet from grasping the guide bar. In other words, the blade arrangement consists of a so-called "kick".

Preferably, the adjusting members are adjusting bolts and movable adjusting nuts adapted to be tightened against the recess to provide radial support for the cutting strip cutting roll.

The friction surface of the guide strip may have a roughness of 1.6 to 10 Ra, preferably 3.2 to 7 Ra. With sufficient friction surface roughness, the friction required for a reliable friction locking of the cutting blade in the radial direction of the cutting roll is achieved by a reasonable torque of the fasteners.

Preferably, the surface roughness of the cutting blade on the friction surface facing the guide strip is 5-7 Ra. In friction locking, the surface roughness of both the guide bar and the cutter blade is important to ensure reliable friction locking with a reasonable tightening torque.

The clamping torque of the fasteners may be 250 Nm to 330 Nm, preferably 270 to 300 Nm. The maximum tightening torque is determined by the attachment limit for the fasteners.

According to one embodiment, each cutting surface has a chamfer forming a chamfer and a guide bar has a second mating surface corresponding to the chamfer for supporting the chamfer in the radial direction of the roll. The second bevel surface provides a sufficiently large support surface between the guide bar and the cutting blade to support the cutting blade securely against the guide bar in the radial direction of the cutting roll.

The depth of the steel recess of the guide strip in the longitudinal direction of the adjusting members may be 2-4 mm smaller, preferably 3 mm smaller than the depth of the cutting blade in the longitudinal direction of the adjusting members. In this case, the cutting blade projects 2-4 mm farther in the radial direction of the cutting roll than the guide strip, preventing the fibrous web from sticking to the guide strip when cutting the fibrous web.

The object of the cross-sectional device according to the invention can be achieved by a cross-sectional device of a sheet-drying machine with a fixed counter-piece and a rotary cutting roll. The cutting roll includes a frame comprising two ends, adjustable bearing housings disposed at each end for adjusting the distance between the cutting roll and the counterpiece, a roll casing arranged around the frame, the roll casing comprising at least one recess The blade arrangement includes an elongated cutting blade for cutting the pulp sheet adapted for attachment to a cutting roll recess, an elongated guide strip adapted to support the cutting blade against a counter surface, a guide strip comprising apertures for fasteners, The cutting device according to the invention is characterized in that the guide strip includes a longitudinal steel recess formed on the opposite side of the bracket head with a guide strip adapted to lock the cutting blade between the guide strip and the counter surface by means of friction locking.

In addition to the advantages of the invention mentioned earlier in connection with the blade arrangement, the cutting device of the invention provides the advantage that the position of the cutting blade relative to the guide bar does not need to be adjusted to compensate for the wear of the cutting blade.

In the blade arrangement of the invention, the wear of the cutting blade is compensated by moving the entire cutting roll relative to the counterpart by means of adjustable bearing housings.

Preferably, each cutting blade comprises two blade arrangements arranged on opposite sides of the cutting roll. In this way, the rotation speed of the cutting roll is kept moderate.

Preferably, the cutting roll includes second counter-threads in the radial direction of the cutting roll to attach the adjusting members to the recess of the cutting roll. The adjusting means may be provided with threaded holes in the roll body. The smooth head of the adjusting bolt bolt can be used to push out the guide strip. To get the guide bar inward, loosen the retaining bolts and push the guide bar inward.

The blade arrangement according to the invention is suitable for use either as a new cross-cutting machine according to the invention or retrofitted to existing pulp drying machines as a blade arrangement according to the invention. In retrofitting, the blade arrangement of the invention replaces the prior art blade arrangement without the need to change any other surrounding structure, or at least with minor changes. In connection with the blade arrangement and the cross-sectional device according to the invention, it has been found that, surprisingly, no separate adjustment of the cutter blade is necessary, but only the adjustment of the guide bar is sufficient while the position between the guide bar and the cutting blade remains constant. In this case, the optimum position of the cutting blade can be adjusted mainly by adjusting the end of the guide bar when the adjustment roller comes from the adjustable bearing housings.

The invention will now be described in detail with reference to the accompanying drawings, in which:

Fig. 1 shows a cross-sectional view of a sheet-cutting machine sheet cutter according to the invention,

Figure 2 is a separate view of the cutting roll with the bearing housings seen from the end, with the blade arrangement of the invention being part of the cutting roll,

Figure 3 is an axonometric view of the cut-off roll, seen from the end, without bearing housings, the blade arrangement of the invention being part of the cut-off roll,

Figure 4 is a separate view of the cutting roll from the end, without bearing housings, with the blade arrangement according to the invention being part of the cutting roll,

Figure 5 is a cross-sectional view of the cutting roll separately from the end, with the blade arrangement of the invention being part of the cutting roll,

Figure 6 is a cross-sectional view of the blade arrangement of Figure 5,

Fig. 7 shows the cutting blade of the blade arrangement according to the invention, viewed from the end separately.

Referring to Figure 1, the cross-sectional apparatus 11 and blade assembly 10 of the invention are part of a pulp drying machine 100. Figure 1 shows only a portion of a pulp drying machine 100, , and is cut in the longitudinal direction, i.e. the longitudinal direction, of the fibrous web web into several separate webs. These parallel tracks are then cut with the cross-sectional device 11 of the invention in the transverse direction into pulp sheets. The pulp sheets are assembled into a stack of pulp sheets 114 using a sheet stacker. According to Figure 1, the cross-sectional device 11 according to the invention mainly comprises a rotary cutting roll 12 and a fixed counter piece 104. The counter piece may be, for example, a blade bar with a fixed blade or the like. The roll nipple 118 preceding the cross-sectional device 11 pushes the fibrous web web to the cross-sectional device 11 and the following drive wheel 120 tightens the web of webs which is cut by the cross-sectional device 11. As the cutting roll 12 rotates, the blade arrangements 10 meet at each turn with a counter piece 104, with the blade arrangement 10 and the counter piece 104 facing each other breaking the fibrous web web in the cross direction of the web. Cutting may occur when the blade assembly 10 is in contact with the counterpart 104, or more preferably, the blade assembly 10 is sufficiently close to the counterpart 104 without contact between them. The correct distance depends on the characteristics of the fiber web to be cut, such as the basis weight, the raw material and the running speed.

The cutting roll 12 shown in Figure 1 is attached to the body 60 of the cutting section 112 of the pulp drying machine 100 using the bearing housings of the cutting roll. Figure 2 shows one bearing housing 48. For example, each bearing housing 48 of the cutting roll 12 can be bolted to the body of the cutting member to lock the cutting roll 12 in place. Preferably, each bearing housing 48 includes adjusting means 62 for fine adjustment of the distance of the blade assembly 10 from the counterpart. The adjusting means 62 may be, for example, a trapezoidal screw which achieves an adjustment of 1/60 mm. The adjusting means may be completely similar to those used in prior art cutting rolls. Usually the adjustment required is only 5-10 milliards of a part due to the wear of the cutting blade. Each bearing housing may further include a gauge plate to indicate an adjustment where the eccentric indicates the displacement of the bearing.

Fig. 3 shows a cut-off roll 12 of the cross-sectional device according to the invention in more detail, loose without bearing housings. The cutting roll 12 comprises a housing 44 and two ends 46, of which the cutting roll 12 is supported by bearing housings on the cutting section body of the pulp drying machine. The cutting roll 12 includes a roll shell 14 formed around the body, with a recess 16 formed for the blade arrangement 10. The recess may be a roll molded structure or may be formed by attaching a separate attachment to the roll shell. Preferably, the cutting roll 12 comprises two recesses 16 on opposite sides of the roll shell 14 of the cutting roll 12 for blade arrangements 10. Although Figures 1-6 show that the cross-sectional device 11 includes a cutting roll 12 with two blade arrangements 10, the cross-sectional device 12 of the cross-sectional device 11 of the invention may also have 1-4 recesses and respectively a blade arrangement. Preferably, each recess comprises a counter surface 18 comprising clamping members 21, preferably counter threads 20, to lock each blade assembly 10 into each recess 16.

3 and 4, each blade arrangement 10 includes an elongated cutting blade 22, an elongated guide bar 24 adapted to support the cutting blade 22 against a counter surface 18, fasteners 28 adapted to be tightened to the counter threads 20 shown in Figures 5 and 6 for securing a guide bar 24 for positioning the guide strip 24 in the radial direction of the cutting roll 12 against the recess 16.

As shown in Fig. 6, guide bar 24 includes openings 26 for fasteners 28. Preferably, the openings 26 are larger than the fasteners 28 at least in the radial direction of the cutting roll 12 so that the guide bar 24 can be moved relative to the fasteners 28 rotated to the counter threads 20 of the counter surface 18 to position the guide bar 24 in the radial direction. The openings may be round or spherical. Preferably, the largest dimension of the aperture is 150 to 300% of the diameter of the through portion of the aperture 26 of the fastener 28. To this end, each bracket 28 includes a socket 30 of larger diameter than the other bracket 28, forming a support surface against the guide bar 24. Spacers 54 may be used between the bracket 28 and the aperture 26. It should be understood in this connection that Figure 3 shows only a portion of the openings 26 and fasteners 28 of the guide bar, but in practice the openings and fasteners are evenly spaced along the guide bar as well as the fastening means formed in the recess for the fasteners.

Referring to Figure 6, guide bar 24 includes a longitudinal steel recess 34 for locking blade 22 for locking cutter bar 22 between guide bar 24 and counter surface 18 by friction locking. The steel recess 34 is formed in the guide strip 24 on the opposite side of the base 30 of each bracket 28 to the guide strip 24, i.e. mounted on the counter surface 18, the guide strip 24. This leaves an empty space between the guide strip 24 and the contact surface 18. Preferably, the steel recess 34 includes a friction surface 36 and a bottom surface 38 for supporting the cutting blade 22, as shown in FIG. The friction surface 36 supports the cutting blade 22 in a direction perpendicular to the plane of the counter surface 18, i.e. in the tangent direction of the cutting roll, while the bottom surface 38 is in the radial direction of the cutting roll 12. When the guide bar 24 is tightened with sufficiently high fastening torque to the counter threads 20 of the counter surface 18, the guide bar presses the cutting blade 22 against the counter surface 18 with a force that, by friction between the counter surface 18, the guide bar 24 and the cutting blade 22 also causes the cutting blade 22 to lock in radial direction.

The guide bar 24 is preferably a piece made of two or more parts. The guide strip 24 can then be easily transported and installed. Preferably, the guide strip consists of two or more sections each having a length of 500 to 1000 mm.

The cutting blade may be a part formed of one or more pieces. Preferably, the cutting blade is made of parts or parts up to 5 m long if the width of the cutting roll is greater than 5 m. On the other hand, the blade arrangement according to the invention does not create openings or recesses for attachment. Preferably, the cutting blade 22 includes two support surfaces 41 as shown in Fig. 7 adapted for positioning against a guide bar 24 and a counter surface 18 and two edge surfaces 40. Each edge surface 40 includes a bevel forming a steel edge 42 and a guide bar 24 having a second counter surface corresponding to the bevel. Due to the symmetrical shape provided by the two steel edges 42 and the parallel edge surfaces 40, the cutting blade 22 is pivotable about its longitudinal axis by 180 ° to utilize both steel edges 42 before the cutting blade is renewed.

In the blade arrangement of the invention, the depth of the cutting blade in the radial direction of the cutting roll may be 20-30 mm if the blade arrangement is used in existing cutting rolls to replace the prior art blade arrangement. On the other hand, if the blade arrangement according to the invention is used in new rolls, then the depth of the cutting blade can be 30-40 mm. When using a deeper cutting blade, the cutting blade has more friction surface for attachment.

The guide strip 24 is supported by the adjusting members 32 in the radial direction of the cutting roll 12 by the adjusting members 32 in the recess 16 of the roll shell 14 of the cutting roll 12. The adjusting members 32 are against the recess 16 to form a second support surface by which the guide strip 24 rests in the recess of the cutting roll 12 in the radial direction of the cutting roll 12. Although the second support surface is not large in area, it is sufficient because the forces exerted on the guide bar are directed such that the tangential forces of the cutting roll are about 10 times the radial forces of the cutting roll. By means of the adjusting means 32 it is possible to adjust the radial projection of the cutting roll 12 of the guide strip 24 and also the position of the cutting blade 22 in the radial direction of the cutting roll 12. In other words, the radial positioning of the cutting blade 12 of the cutting blade 22 is made only by moving the guide strip while the positioning between the guide strip and the cutting blade is fixed. The positioning of the guide bar 24 by means of the adjustment bolts 70 acting as adjusting members 32 and the adjusting nuts 72 threaded over them is done by turning the adjusting nuts 72 so that the guide bar resting against them in the radial direction of the cutting roll 12 moves either outwards or inwards. Preferably, the adjusting means are spaced at intervals to provide a supportive support. The adjusting members 32 may be fixed by threaded holes to the body of the cutting roll 12.

Preferably, the recess formed in the cutting roll, the counter surface, the cutting blade and the guide strip have a slightly helical shape in the longitudinal direction between the ends of the cutting roll. In other words, they are threaded and there is a rise between the ends. This means that the level of the guide strip points slightly perpendicular to the surface of the cutting roll roll cover at one end of the cutting roll relative to the other. Thanks to the spiral shape, when the blade arrangement of the cutting roll meets the counterpart as the cutting roll rotates, the fiber web is cut at slightly different times at different ends of the cutting roll, as in the case of scissors. The spiral nature is also evident from the cross-sections of Figures 5 and 6.

To ensure sufficient friction to lock the cutting blade between the guide bar and the counter surface, the cutting blade, the friction surface and the counter surface of the guide bar are preferably machined to a suitable smoothness to provide sufficient radial frictional force of the cutting roll by tightening the fasteners. The friction surface of the guide strip and the counter surface may have a roughness of 1.6 to 10 Ra, preferably 3.2 to 7 Ra. Preferably, the surface roughness of the cutting blade on the friction surface facing the guide strip is 5 to 7 Ra. Thanks to machined surfaces, there is no need for separate shoulders or grooves in the friction surface and the cutter blade to achieve sufficient friction. In other words, the sides of the cutting blade parallel to the friction surface of the guide bar and the plane of the counter surface are straight.

The material used for the cutting blade is preferably powder steel, but may also be high-grade steel. Powder steel is more expensive, but also more durable. The manufacturing cost of the cutting blade is significantly lower than the cost of replacing the cutting blade while the pulp drying machine is stationary, and therefore a more durable material in the cutting blade is preferred to extend the service downtime. The guide bar and counter surface may be, for example, unhardened tool steel or the like.

The installation and replacement of the cutting blade arrangement of the invention and the cutting blade of the cross-section device takes place in the following steps. When installing the cutter blade, first attach the guide bar to the counter surface by mounting the brackets through the holes in the guide bar and tightening the brackets to the mounting members only to hold the guide bar in the recess. The bearings of the cutting roller are then adjusted to the zero position. Install the cutting blade between the guide bar and the counter surface and tighten the brackets to 50 Nm. The cutting roller is rotated such that the blade arrangement is positioned against the counterpart, thus showing the need for blade adjustment. The adjusting means adjust the position of the guide strip and the cutting blade relative to the counterpart by rotating the adjusting nuts acting as adjusting members. Finally, the clamps are tightened to their final torque to lock the cutting blade. The tightening torque i can be 250 - 330 Nm. On the other hand, when replacing the cutting blade, the fasteners are loosened without completely removing them from the counter-threads, whereby the cutting blade can either be turned to make a new steel edge or completely replaced, after which the above installation process is repeated.

Claims (5)

PROTECTION REQUIREMENTS 1. Skärarrangemang (10) i en massatks (100) arkskär-ningsmaskins kapvals (12), waving kapvals (12) innefattar en valsmantelns (14) fördjupning (16) inbegripande en passningsyta (18) för ett skärarrangemang (10) och fäst 21) för att fästa skärarrangemanget (10) på kapvalsens (12) passningsyta (18), whisk skärarrangemang (10) innefattar - ett avlångt kapsks (22) för att klippa ett massaark, anordnat att fästas i kapvalsens (12) fördjning (16) , - en avlång styrlist (24) anordnad att stöda kapskäret (22) mot passningsytan (18), dyr styrlisten (24) inbegriper öppningar (26) för fästen (28), - fästen (28) inbegripande et interest (30) för fästande av styrlisten (24) på passningsytan (18) med hjälp av fästena (28) genomic styrlistens (24) öppningar, och - reglerorgan (32) för positionering av styrlisten (24) i kapvalsens (12) radialriktning, kännetecknat av att styrlisten (24) ) innefattar en för kapskäret (22) längsgående skärfördjupning (34) utfor mad på styrlistens (24) motstående sida i förhållande till varje fästes (28) interests (30) anordnad att låsa kapskäret (22) mellan styrlist (24) och passningsyta (18) med hjälp av friktionslåsning. A blade assembly (10) on a sheet cutting machine (100) for cutting a pulp dryer (100), the cutting roll (12) including a recess (16) of a roll jacket (14) comprising a counter surface (18) for the blade assembly (10) and fastening members (21). ) for attaching to the mating surface (18) of the cutting roll (12), the blade arrangement (10) comprising: - an elongated cutting blade (22) for cutting the pulp sheet to be mounted in a recess (16) of the cutting roll (12) 18) against the guide strip (24) comprising openings (26) for the brackets (28), - the brackets (28) comprising a socket (30) for securing the guide strip (24) to the counter surface (18) through the openings of the guide strip (24), and - adjusting means (32) for positioning the guide strip (24) in the radial direction of the cutting roll (12), characterized in that the guide strip (24) comprises a longitudinal direction of the cutting blade (22). a steel recess (34) formed on the opposite side of the base (30) of each bracket (28), adapted to lock the cutting blade (22) between the guide bar (24) and the counter surface (18) by frictional locking. 2. Skärarrangemang enligt skyddskrav 1, kännetecknat av att skärfördjupningen (34) innefattar en friktionsyta (36) i styrlistens (24) planriktning anordnad att stöda kapskäret (22) mot passningsytan (18) och en i förhållande till bottenyta (38) anordnad att bära upp kapskäret i styrlistens (24) planriktning. 3. Skärarrangemang enligt skyddskrav 1 eller 2, kännetecknat av att kapskäret (22) innefattar två stödytor (41 i kapskärets (22) längdriktning anordnade att placeras mot styrlist (24) och passningsyta (18) och två kapskorets (22) , see this stödytor (41) and kantytor (40) under the same name as the Plana ytor. Blade arrangement according to Claim 1, characterized in that the steel recess (34) has a friction surface (36) parallel to the plane of the guide strip (24) arranged to support the abutment surface (18) of the cutting blade (22) and the bottom surface (38) supporting the cutting blade (22) in the direction of the level of the guide strip (24). Blade arrangement according to claim 1 or 2, characterized in that the cutting blade (22) comprises two longitudinal support surfaces (41) of the cutting blade (22) adapted to be placed against the guide strip (24) and the counter surface (18) and two edge surfaces (22). 40), said support surfaces (41) and edge surfaces (40) each being uniform and continuous planar surfaces. Blade arrangement according to one of Claims 1 to 3, characterized in that the cutting blade (22) comprises two longitudinal support surfaces (41) of the cutting blade (22) adapted to be placed against the guide strip (24) and the counter surface (18) and two edge surfaces (40). ), each edge surface (40) having one steel edge (42), the edge surfaces (40) being parallel, allowing the cutting blade (22) to be rotated about its longitudinal axis by 180 ° to change the cutting edge (42). A sheet-cutting machine (100) for a pulp drying machine (100) having a fixed counter piece (104) and a rotary cutting roll (12) comprising: - a frame (44) having two ends (46), - adjustable bearing housings (12); 48) disposed on each end (46) for adjusting the distance between the cutting roll (12) and the counter piece (104), - a roll casing (14) arranged around the body (44), the roll casing (14) comprising at least one recess (16) for blade arrangement (10); fastening means (21) for securing the blade arrangement (10) to the abutment surface (18) of the roll shell (14), - for cutting the fiber web into pulp sheets, the blade arrangement (10) having an elongated cutting blade (22) adapted to cut the pulp sheet (12) in recess (16), elongated guide bar (24) adapted to support cutting blade (22) against counter surface (18), guide bar the stan (24) comprising openings (26) for the fasteners (28), the fasteners (28) comprising a socket (30) for securing the guide strip (24) to the counter surface (18) through the opening (26) of each guide strip (24), and adjusting members (32) (24) for positioning in the radial direction of the cutting roll (12), characterized in that the guide strip (24) includes a longitudinal steel recess (34) formed on the opposite side of the base (30) of the bracket (28) arranged to lock the cutting blade (24). 22) between the guide strip (24) and the counter surface (18) by friction locking. SKYDDSKRAV 4. Skärarrangemang enligt skyddskrav 1-3, kännetecknat av att kapskäret (22) innefattar två stödytor (41 i kapskärets (22) längdriktning anordnade att placeras mot styrlist (24) och passningsyta (18) och två kapskärets (22) kantytor (22) , the edges of the shield (40) finns en skäregg (42), and the shear tower (40) parallel to the whistling möjliggör kapskärets (22) vridning kring sin längdaxel 180 ° för byte av den kapande skäreggen (42). 5. En massat (100) arkskärningsmaskins tvärskär-ningsanordning (11), whisking innefattar et fast mothåll (104) och en roterande kapvals (12), whisking kapvals (12) innefattar - en stomme (44), inbegripande två ändar (46), - reglerbara lagerhus (48) anordnade i båda ändar (46) för reglering av det inbördes avståndet mellan kapvals (12) och mothåll (104), - en valsmantel (14) anordnad omkring stommen (44), där valsmanteln (14) inbegri en fördjupning (16) fördjupning (10) och fästorgan (21) för fästande av skärarrangemanget (10) i den passningsyta (18) som ingår i valsmantelns (14) fördjupning (16), - skärarrangemang (10) fban avning till massaark, whistling skararrangemang (10) innefattar ett avlångt kapskäret (22) för att klippa et massaark, anordnat att fästas i kapvalsens (12) fördjupning (16), en avlång styrlist (24) anordnad att stöda kapskäret (22) mot passnings (22) mot passnings 18), där styrlisten (24) inbegriper öppningar (2 6. för fästen (28), fästen (28) inbegripande et interesud (30) för fästande av styrlisten (24) på passningsytan (18) genome var och en av styrlistens (24) öppningar (26), och reglerorgan (32) för positioning av styrlisten (24) i kapvalsens (12) radialriktning, kännetecknad av att styrlisten (24) innefattar en för kapskäret (22) längsgående skärfördjupning (34) utformad på styrlistens (24) motstående sida i förhållande till (24) 30) anordnad att låsa kapskäret (22) mellan styrlist (24) och passningsyta (18) med hjälp av friktionslåsning.