Device for conveying printing material in a machine and method for the production of a primary member of an electrical linear motor

p0001The present invention relates to a transport system in a printing material processing machine having the features of the preamble of Claim first

p0002Furthermore, the present invention relates to a process for the preparation of a primary part of an electric linear drive with the features of the preamble of claim 9th

p0003It is known in manufacturing printing machines, for example in printing presses, the printing material to be processed, such as sheets to be printed.. (Hereinafter sheet) to transport means of a transport system based on electric linear actuators.

p0004It is also known, in processing printing machines, for example in web presses, a printing material to be processed (hereinafter web). Feed by means of a transportation system based on electric linear actuators before the actual printing process in the machine.

p0005It is further known to combine transport systems to branch and / or and to provide to this end with switchable switches. Since the successive carriage or slide of the system often have only small distances from one another, it is necessary to provide switches with short switching times and high switching dynamics.

p0006Known switches can be configured as a mechanically active or passive shunt mechanically, that is, they include altering the roadway moving mechanical components such. As rail sections, or not.

p0007document <patcit id="pcit0001" dnum="DE19621507C1"><text>DE 196 21 507 Cl</text></patcit> discloses a web-threading device for sheet material with a mechanically active crossover. The device has in this case a guide rail, in which a pulling device for pulling the web is movable on. The propulsion is generated by an electric linear actuator having a stator formed from magnetizable material as cores electromagnets each having wound thereon coils. The cores may be connected to each other via pole plates. The linear actuator further comprises a runner on the drawbar, on which two or more permanent magnets or are secured closed electrically excitable coils.

p0008The pulling device may be designed as elongated link chain, whose length is greater than the distance between two adjacent coils configured as drive stations.

p0009The apparatus further comprises one or more selectable switches, which are each formed as a rotatable disc, on which curved portions of the guide rail are respectively disposed in different directions. Depending on the rotational position of the disc, a web path be set for the entry of the train.

p0010When switching the switch only portions of the guide rails are moved. The drive stations remain stationary.

p0011The switch described can only be used in conjunction with the trained as a link chain puller, because in the field of soft no drive stations are to proceed, and thus present the pulling of the switch or downstream drive stations must be recorded drivingly.

p0012From document <patcit id="pcit0002" dnum="EP0907515B1"><text>EP 907 515 B1 0</text></patcit> discloses a transport system for sheet. In the document it is proposed that a system based on electric linear actuators transport system in a sheet offset printing machine, which arranged the arc by means of propulsion elements and transported designed as gripper trusses sheet holding means from a first to a second printing unit.

p0013They may consist of individual members of formed as link chains, the rotor of the drive forming propulsive elements of magnetic material, eg. As permanent magnets. The stator of the drive forming drive stations contain known electromagnetic coils generating an electromagnetic traveling field for driving the propulsion elements.

p0014The transport system comprises a guide device with a mechanically passive crossover, which can be formed for instance by two additional drive stations that are located at the beginning of each branch path of the transport system and in accordance with the einzuschlagenden path are alternately energized (ie selective activation and deactivation of electromagnetic fields in parts of the transport path for generating cornering forces), whereby the propulsion elements are conveyed in one or the other path.

p0015The proposed solution has the problem that the proposed configuration of the switch as a mechanical passive crossover, that allows no moving components, namely a quick circuit of the switch and an undercut arrangement of the branching paths, but in terms of the guidance accuracy of propulsive elements in the region the turnout compared to the rigid guide may be limited undesirable in mechanically active turnout.

p0016Furthermore, passenger transportation systems are based on known linear electric actuators with switchable switch to the branch of the transport paths are provided.

p0017Such a system is in each case in the <patcit id="pcit0003" dnum="JP59006763A"><text>JP 59-6763 A</text></patcit> and in the <patcit id="pcit0004" dnum="JP5140903A"><text>JP 5-140903 A</text></patcit> described. The switchable points described therein are designed such that not only guide means, for. Example, rail sections are moved, but also together with these, the stator of the drive. Thus, such a system on the problem that for switching or for setting the crossover massive elements must be moved so that rapid switching of the switch with short switching times not appear possible. However, a slow switching appears in the field of passenger transport systems acceptable as the individual features of the system large distances from one another.

p0018Furthermore, based on electric linear actuator (z. B. the Transrapid) also pivoting or bending points are known in the field of passenger transport systems in which both the rail sections and the stator are moved by bending.

p0019However, this requires high actuating forces and long travel ranges are required, resulting in a low dynamic response.

p0020Finally, the replacement of the entire section of the transport system including rails and stator in the area of ​​the switch is possible, which however does not allow high switching dynamics also due to the masses to be moved.

p0021It is an object of the present invention to provide a transport system in a printing material processing machine, which overcomes at least one of the indicated disadvantages of the prior art.

p0022It is a further or alternative object of the present invention to provide an improved transport system in a machine processing printing material.

p0023It is a further or alternative object of the invention to provide a transport system in a printing material processing machine having a fast-acting or fast switchable points.

p0024It is a further or alternative object of the invention to provide a transport system in a printing material processing machine having a crossover with very precise guiding properties.

p0025It is a further or alternative object of the invention to provide a transport system in a printing material processing machine comprising fast-acting or fast switchable mechanical components of a switch.

p0026It is a further or alternative object of the invention to provide a transport system in a machine processing printing material, which is inexpensive to manufacture.

p0027These objects are achieved by a transport system having the features of claim 1.

p0028It is also an object of the present invention to provide an improved process for the preparation of a primary part of an electric linear drive.

p0029It is another or alternative object of the invention to provide a method for manufacturing a primary part of an electric linear drive, which allows a simple implementation.

p0030It is a further or alternative object of the invention to provide a process for the preparation of a primary part of an electric linear drive, which is suitable for use in switching or fast switchable switches.

p0031These objects are achieved by a method for manufacturing a primary part of an electric linear drive with the features of claim 9.

p0032Advantageous developments of the invention are contained in the subclaims.

p0033An inventive transport system in a printing material processing machine with<ul><li>a guide device having at least one switch,</li><li>at least one along the guide means movable rotor, and</li><li>an electric linear drive, which a winding cores comprehensive primary part and the runner comprehensive secondary part has,</li></ul>is characterized, that in the area of ​​the switch, a winding core to form a recess for at least one guide segment of the guide device compared with the amount of hubs outside the range of the switch has at least lower height.

p0034The winding cores (or teeth) of the primary part are - as usual - is arranged such that between the winding cores are formed grooves in which the windings which are wound around the winding cores, are received.

p0035The transport system according to the invention comprises a specially trained primary part of the electric linear drive. According to the invention, at least one winding core in the region of the diverter of lesser height than the hubs outside the range of the switch.

p0036The provided by the lower height of the hub recess in the primary section allows advantageously the inclusion of at least one guide segment, for example, a rail section.

p0037In this simple way a switch can be made ​​in the transport system by be kept on a branch guiding devices, such. As rails, through the opening in the primary part. The rails are at least in the region of the recess advantageously of non-metallic material, eg. As plastic. An advantage is that all the elements of the electric linear drive can be arranged stationary, and not have to be moved together with the to moving guide means when moving or switching the switch, so that a very fast switching operation or a high switching dynamics can be achieved. Also, bending of the transport device can be advantageously avoided.

p0038Another advantage of the invention is to find that the driver of the linear drive, ie the shuttle or carriage of the transport system, also in the area of ​​the switch are constantly under the driving influence of the electric linear actuator and hence a safe and precise control of the car in the area the switch is possible.

p0039An inventive transport system thus provides a rigid and therefore precise mechanical guidance ready, but also allows the fast path change by highly dynamic and independently switchable, segmented guiding elements. A respective further advantage of the invention is the separation of the propulsion system (Electric linear proportion) of the mechanical switching elements (segmented guide elements or rail pieces) the realization of switching times that are less than the transit time of a runner (wagon) through the switch and the possibility of switching the switch even during the presence of a runner in the region of the diverter.

p0040An inventive transport system in sheetfed presses, in particular sheet-fed offset rotary printing machines, used sheets for transporting, handling, inward and outward.

p0041An inventive transport system can further be used in web-fed printing machines, in particular in roller offset rotary printing machine, for transporting, conveying or retraction of one or more webs.

p0042An inventive transport system can also be used in folding units for transporting signatures or folded products.

p0043An inventive transport system can also be used in post-processing machines (postpress machines), in particular in gluing machines, binding machines, punching, stacking machines or packaging machines for transporting or conveying printed products.

p0044A erfmdungsgemäßes transport system can also be used in digital presses, particularly in copying, for transporting or conveying material to be printed.

p0045An inventive transport system can moreover also in the prepress stage used (in prepress equipment), in particular in platesetters, for transporting or conveying printing plates in place of printed material.

p0046An embodiment of the transport system according to the invention is characterized in that the hubs are provided on the amount of hubs outside the range of the switch only in a lower section with windings. It may be formed in the area of ​​the switch in this way all winding cores or winding cores.

p0047In a further embodiment of the invention, a transport system is characterized in that the hubs on the amount of hubs outside the range of the switch only in a lower portion of less than about 75% or 50% of the height, in particular of less than about 40% or 30% or 25% of the height, are provided with windings.

p0048Furthermore, a preferred embodiment of the transport system according to the invention can be characterized in that arranged at least one guide segment fixed in the recess.

p0049According to a further preferred embodiment, the transport system of the invention is characterized in that the at least one guide segment in the recess or the side of the cutout zoom is designed at least partially movable, in particular linearly movable or pivotable.

p0050It is also possible, according to another preferred embodiment of the transport system according to the invention also in that one guide segment between a passive position and an active position at least moved.

p0051In another preferred embodiment of the transport system according to the invention, a further guide segment between the active position and another passive position is movable.

p0052An inventive method for manufacturing a primary part of an electric linear drive, in which a number of winding cores of the primary part is provided with windings, is characterized in that the number of winding cores with respect to its height is provided only in a lower portion with windings and that at least one winding core is made with a smaller height.

p0053The inventive method allows advantageously easy making special primary parts of electric linear actuators. produced in such a way primary parts can advantageously be used in transport systems which are equipped with branches and arranged at the branching points.

p0054The primary parts according to the invention allow, by making at least one winding core with smaller height of the recessed space on the winding core with smaller height for guiding devices, such. As rails, to use, so that the rails can be passed through the primary part and in this way the primary part the region of a switch may find use.

p0055Another advantage of the preparation process according to the invention can be found in the fact that in a simple way primary parts for electric linear actuators are producible which allow an uninterrupted and trouble-free driving a rotor of the drive in the area of ​​points.

p0056In a further embodiment, an inventive method is characterized in that the number of winding cores of with respect to their height only in a lower portion of less than about 75% or 50% of the height, in particular of less than about 40% or 30% or 25% height, is provided with windings.

p0057Furthermore, a preferred embodiment of the inventive process can be characterized in that the preparation of the lower level of the at least one winding core by cutting, in particular by milling or grinding, or nichtspanend, in particular punching, done.

p0058The invention and further advantages of the invention are described below with reference to the drawings of a preferred exemplary embodiment.

p0059The drawings show:<dl id="dl0001" compact="compact"><dt>figure 1</dt><dd>a schematic side view of a printing unit with a transport system according to the invention; </dd><dt>figure 2</dt><dd>a sectional view of the transport system of the invention;</dd><dt>figure 3</dt><dd>a top perspective view of an inventive transport system;</dd><dt>figure 4</dt><dd>a top perspective view of an inventive transport system;</dd><dt>figure 5</dt><dd>a schematic plan view of the portion of the switch of a transport system according to the invention in a first switch position;</dd><dt>figure 6</dt><dd>a perspective top view of the portion of the switch of a transport system according to the invention in a first switch position;</dd><dt>figure 7</dt><dd>a schematic plan view of the portion of the switch of a transport system according to the invention in a second switch position;</dd><dt>figure 8</dt><dd>a perspective top view of the portion of the switch of a transport system according to the invention in a second switch position;</dd><dt>figure 9</dt><dd>a sectional view of the primary part of the guide means in the region of the diverter;</dd><dt>figure 10</dt><dd>a top perspective view of an inventive transport system with a switch actuator from a first perspective;</dd><dt>figure 11</dt><dd>a top perspective view of an inventive transport system with a point-setting unit from a second perspective;</dd><dt>figure 12</dt><dd>a simulation calculation;</dd><dt>figure 13</dt><dd>Results of the simulation as a diagram; and</dd><dt>figure 14</dt><dd>Results of the simulation of a diagram.</dd></dl>

p0060In the figures, corresponding features are provided with the same reference numerals.

p0061<figref idrefs="f0001">figure 1</figref> shows a schematic side view of a printing unit 2 of a substrate 3 (z. B. in the form of sheets to be printed) fed printing press 1. The printing unit 2 are at least one unit 4, z. B. a further printing unit or a sheet feeder upstream, and at least two units 6, 8, z. B. additional printing units, coating units, dryers, bow boom or Drucknachverarbeitungseinrichtungen (for example, cutting machines, folders, punching, binding machines or packaging stations), downstream.

p0062The printing unit has a color and / or dampening unit 200 with rollers, a plate cylinder 202 with a mounted printing form 203 (z. B. printing plate or printing sleeve), a transfer cylinder 204 with a spanned transfer fabric 205 (z. B. blanket or blanket sleeve) and an impression cylinder 206. Furthermore, the printing unit 2 may include a separate motor 208 for driving the cylinders and rollers having or the printing unit can be driven by a common driving a plurality of printing units.

p0063The sheets to be processed are 3 of the unit 4 to the printing unit 2 and transported further in the direction of movement 9 to at least one of the two units 6, eighth To this end 1 includes the printing press, a transport system 10 for the sheet 3, which extends along the transport path and having at least one guide means 12 and at least one along the guide means movable carriage 14, are held at which the sheet 3 having. The carriage 14 is guided on a return section 16 of the transport system 10 to unit 4 back.

p0064For simplicity of illustration is in <figref idrefs="f0001">figure 1</figref> only a guide device 12 is shown. However, the transport system can preferably be opposite guide means comprise on each side of the printing press, which follow for guiding the carriage 14 is substantially the same web path.

p0065<figref idrefs="f0001">figure 1</figref> It can be seen that the transport system comprises a switch 18, a first path 20 of the guide means 12 branched at the second and third in a path 22, 24 of the guide device 12th The switch is thus arranged at a branch of the transport path.

p0066<figref idrefs="f0002">figure 2</figref> shows a sectional view of the transport system 10. In this case, only a side end portion of a carriage 14 and this end portion is for ease of illustration shown leading guide means 14 which, for. example, may be disposed on a side wall of the printing machine 1 or the printing unit 2. However, the carriage may also be guided with its opposite other (not shown) side end in a guide device, which is preferably disposed on the opposite wall of the printing machine or the printing unit.

p0067The guide means 12 of the transport system 10 includes two spaced-apart rails 30, 32 (which extend in the figure in the drawing plane), between which a primary part 34 is a linear electric motor arranged 36th The secondary part 38 of the linear electric motor 36 comprises the formed as a runner carriage 14, a portion 38 of the carriage 14 or arranged on the carriage 14 element 38. Alternatively, forms of carriage 14, a portion 38 of the carriage 14 or arranged on the carriage 14 Element 38 the secondary part 38 of the linear electric motor 36th

p0068The carriage 14 is supported on wheels 40, 42, 44, 46 on the rails 30, 32 so from that the car is performed both in the vertical direction 47 and in the lateral direction 48 to the rail course sure that essentially can not perform movements , and in the direction of the rail curve (in the figure in the drawing plane) is movable. The magnetic attraction forces 38-34 act as an abutment to the wheels 44, 46th

p0069Further, the carriage 14 a crossbar 49, which are arranged on gripper units 50, wherein the gripper units 50 to be transported or hold sheets to be processed 3 between gripper pads 52 and movable grippers 54 to.

p0070In <figref idrefs="f0003">figure 3</figref> the transport system 10 according to the invention is illustrated in the region of the diverter.

p0071As area of ​​the switch, the range can be understood, which extends along the guide means 12 substantially over the branch of the guide means 12 away. In this case, a respective portion of the first, second or third path 20, 22, 24, which present the branch directly or downstream, are also counted the area of ​​the switch. In particular, can be understood as the area of ​​the crossover region of the transport system in which the transport system, the guide means or the primary part of the electric linear drive comprises elements of the switch.

p0072In a narrower sense can be understood as the area of ​​the crossover only the area in which, as explained in more detail below, rails of the guide device by recesses (alternative name: breakthroughs), which are provided in the primary part, be conducted.

p0073Between the rails 30, 32 extends recognized the primary part 34 of the electric linear drive 36 and is supported on the rails, the movable (alternatively: movable, movable or vortreibbare) carriage 14 shown.

p0074The <figref idrefs="f0003">figure 3</figref> at the same time shows the two possible paths 22, 24 of the carriage 14 after leaving the diverter 18. The exact position or positioning of the rails 30, 32 in the area of ​​the switch is clearly illustrated in the other figures.

p0075As <figref idrefs="f0003">figure 3</figref> It can be seen that the primary section 34 sets out in path direction successive winding cores 60 (alternative designation: windings, pole elements or stator) along which to carry windings (see also <figref idrefs="f0008">figure 9</figref>) Are adapted. In the crossover 18 at least have some hubs or Teeth 60 (completely or partially) a smaller height, such that a recess 62 in the primary part 34 is formed, in which portions or segments of the rails received or receivable 30, 32, z. B. by arranging, pivoting and / or linear moving or by replacing (see also <figref idrefs="f0003">figure 4</figref>).

p0076The recesses permit the free passage of the rails 30, 32 by the primary part 34 in the region of the diverter 18th

p0077In <figref idrefs="f0003">figure 4</figref> is represented by arrows, such as the locations of the switch 18 by pivoting and / or linear moving segments or by exchanging segments of the rails can be 30, 32 achieved.

p0078By common pivoting and consequently exchanging segments 300A, 300B and 302A, 302B 22 (straight direction) and run-out path can be 24 (branch direction) adjusted or changed between outgoing path. The segments 300A, 300B show<figref idrefs="f0003">figure 4</figref> the position for straight guidance during the segments 302A, 302B in <figref idrefs="f0003">figure 4</figref> the position for Curve guide show (this presentation aims to identify the various parking options, to use both pairs of segments are made uniform, either in straight-ahead or in direction of the curve).

p0079The respective segments 304, 306 of the two rails 30, 32 can be adjusted by linear Aufund down movement between two positions, are being released in the lower or lowered position cutouts for the wheels of the car, so the car a curve follow toward path 24 , while in an upper or raised position the rails in straight direction substantially be completely closed so that the car can be straight out toward path 22nd

p0080Furthermore, the segments 308, 310 pivoted from a respective lower in a respective upper position and / or can be moved linearly. Here 310 enter the segment 308 in its lower position the straight-ahead direction freely, while in its upper or raised position they close gaps in the rails 30, 32 in the branching direction.

p0081More in the <figref idrefs="f0003">figure 4</figref> Segments shown the rails 30, 32, particularly in the area of ​​the switch are arranged stationary.

p0082The segments described are formed by a segmentation of the guide device in the direction of movement.

p0083In the illustrations of <figref idrefs="f0004">figures 5</figref> and <figref idrefs="f0005">6</figref> is to identify which segments are arranged in which position the position of the switch in the straight direction (first position of the switch).

p0084In the view of the <figref idrefs="f0006">figures 7</figref> and <figref idrefs="f0007">8th</figref> is to identify which segments in which position the position of the switch located in branch-direction (second position of the switch).

p0085In the first position of the switch, the segments 300A and 302A are in their active position as segment 304. In contrast, in the second position of the switch the segment 300B, 302B and 310 active in their respective position. Active position is to be understood so that the affected segments are components of the rail history. In a corresponding passive position (or parking position) the segments concerned are not part of the rail history.

p0086In the <figref idrefs="f0004">figures 5</figref> and <figref idrefs="f0006">7</figref> are also fixed in a recess 62 of the primary part arranged guide segments 400, 402 shown.

p0087In the <figref idrefs="f0008">figure 9</figref> Sectional view shown by the primary part 34 allows the hubs 60 seen from magnetizable material, wherein the area of ​​the switch 18 two hubs 600, 602 relative to the height H of hubs 604, 606 outside the range of the switch 18 a lower (or decreased or reduced) height H 'have. This results in a recess 62 of the height h by which the rails 30 (or 32) can run freely.

p0088The hubs 60 of the primary part 34 - both those of the height H as well as those of the height H '- are only up to a preferably uniform height H "of windings 608 (or coils) is surrounded, wherein the height H' &lt;H 'is , The windings 608 may be fixed by the reel hubs 60 disposed lugs 610, the lugs 610 are disposed preferably on all winding cores 60 at the same level (substantially H "). The tabs 610 may also be formed by projections on the winding cores 60.

p0089<figref idrefs="f0008">figure 9</figref> further shows also designed as a carriage or slide 14 secondary part 38, that is, the rotor of the drive, which are spaced apart by an air gap 37 from the primary part 34 is movably disposed. In the example shown on the carriage 14 for coupling at least one permanent magnet 33 (alternatively: a squirrel cage induction machine a) arranged. Instead of the permanent magnet 33 may also be provided a magnetizable core and a winding electrically energizable coil. The windings 608, in particular three-phase windings, the primary section 34, ie, of the stator generate in appropriate energization of a traveling magnetic field, ie, a field which moves along the primary part 34 to which the magnetic field of the permanent magnet 33 coupled and by which the permanent magnet 33 and thus also the carriage 14 is carried along and driven into the direction of movement 35 in a known manner.

p0090Although in <figref idrefs="f0008">figure 9</figref> not recognizable, the primary part may 34 (and in particular the winding cores 60) of many layers against each other consist of insulated electrical sheets and form a stator lamination. The advance movement of the carriage 14 can be accelerated or braked in the usual manner by not shown control or regulating devices which are controlled or regulated the energization of the windings 608, influenced in the desired manner, that is, the carriage 14 may, for. Example, at a constant speed, moving distance holding to another car or in register.

p0091Primary members 340 outside the range of the switch, in particular in the paths 20, 22 and 24, may have windings 609 that utilize substantially the full height of the winding cores 620 and thus having an optimized fill factor and generate a larger magnetic flux density in the gap in a conventional manner , In this way can be achieved in an advantageous manner that only in the field of soft high winding cores are used with a low fill factor.

p0092This in <figref idrefs="f0008">figure 9</figref> illustrated primary part 34 can be part of a course component, so that the term used in this application "within the range of the switch" can be understood in such a way also that is meant in the area of ​​soft component, while the primary part 340 may be part of a (soft loose) path component can, so that the term used in this application can also be understood "outside the range of the switch" such that it refers to the area of ​​the path component.

p0093The in <figref idrefs="f0009">figure 10</figref> A switch unit shown 70 (front view) includes a linear guide 72 (with track 73) for a mounting member 74 (alternative designation: base), is arranged on which the segment 302B of the rail 32nd When changing or when switching the switch 18, the segment 302B can be moved from its active position linearly along the linear guide (in the figure above) in its passive position. This movement is illustrated by the arrow 76th Here, the linear displacement movement takes place substantially perpendicular to the direction of the incoming path 20 and the 30, 32 spanned by the two rails level.

p0094Thereafter or simultaneously also substantially, the segment 302A from its passive position (in <figref idrefs="f0009">figure 10</figref> behind the mounting plate 74, not visible) linearly along a linear guide (to be moved in the figure forward, see the movement direction 78) from its passive position to the active position. This adjustment movement is essentially perpendicular to the direction of the incoming path 20 and perpendicular to the plane spanned by the two rails 30, 32 level.

p0095Likewise, the segments 300A, 3 (10B (see also <figref idrefs="f0009">figure 11</figref>) Are adjusted by means of linear guides 80, 82nd

p0096The segments 304, 310 can be alternately moved from passive to active position and back by means of linear guides.

p0097In <figref idrefs="f0009">figure 11</figref> is the point operating unit shown from behind (rear view), wherein segment 300B can be seen in its passive position.

p0098It is further possible to provide skewed oriented actuators instead of the horizontal and vertical adjustment devices for the segments.

p0099In the <figref idrefs="f0010">figures 12</figref>. <figref idrefs="f0011">13 and 14</figref> is shown a simulation calculation of the magnetic flux density B for a respect to its height only partially wound winding core.

p0100<figref idrefs="f0010">figure 12</figref> fragmentary shows a simulated winding core 90 and an overlying, by an air gap 92 of the winding core 90 separated (spaced) permanent magnet 94 and the field lines 96 of magnetic flux density B in this segment. The gray values ​​used in the figure indicate the magnitude of the magnetic flux density B. The digits 0 and 5 indicate the position in the air gap, as in the diagram in<figref idrefs="f0011">figure 13</figref> is plotted on the abscissa.

p0101In <figref idrefs="f0011">figure 13</figref> is a graph, in which the magnetic flux density B (in Tesla) on the position in the air gap 92 (see the numbers 0 and 5 in <figref idrefs="f0010">figure 12</figref>) Is plotted for different free heights of the hub 90th As a free height of the hub while the portion of the winding core to understand, which is not wrapped by a coil. One can clearly see that the variable (see various drawn curves), only partially wrapping the winding core has only a minor influence on the magnetic flux density B. Further, the magnetic flux density in excess of about 3/5 of the gap area (0 to 3) is substantially constant.

p0102In <figref idrefs="f0011">figure 14</figref> there is shown a diagram in which the mean relative flux density is plotted (in Tesla) on the space factor (in%). As "fill factor" is to be understood in the overall height of the winding core, the percentage of wound height of the winding core. It can clearly be seen here that the average relative flux density with increasing fill factor to 100% converged, from about 25% filling factor = is over 90% and = already reached about 100% of the maximum flow already at about 50% fill factor.

LIST OF REFERENCE NUMBERS

p0103<dl id="dl0002" compact="compact"><dt>1</dt><dd>Printing-material processing machine</dd><dt>2</dt><dd>printing group</dd><dt>3</dt><dd>substrate</dd><dt>4</dt><dd>upstream unit</dd><dt>6, 8</dt><dd>Subordinated units</dd><dt>9</dt><dd>direction of movement</dd><dt>10</dt><dd>transport system</dd><dt>12</dt><dd>guide means</dd><dt>14</dt><dd>Runner Cart</dd><dt>16</dt><dd>Return section</dd><dt>18</dt><dd>switch</dd><dt>20</dt><dd>first path</dd><dt>22</dt><dd>second path</dd><dt>24</dt><dd>third path</dd><dt>30,32</dt><dd>rails</dd><dt>33</dt><dd>Permanent magnet / rotor cage of an asynchronous</dd><dt>34</dt><dd>Primary part / stator</dd><dt>35</dt><dd>direction of movement</dd><dt>36</dt><dd>electric linear motor</dd><dt>37</dt><dd>air gap</dd><dt>38</dt><dd>Abutment / runner</dd><dt>40, 42, 44, 46</dt><dd>wheels</dd><dt>47,48</dt><dd>directions</dd><dt>49</dt><dd>traverse</dd><dt>50</dt><dd>gripper unit</dd><dt>52</dt><dd>Gripper pad</dd><dt>54</dt><dd>grab</dd><dt>60</dt><dd>Hub / pole element / tooth</dd><dt>62</dt><dd>recess </dd><dt>70</dt><dd>A switch unit</dd><dt>72</dt><dd>linear guide</dd><dt>73</dt><dd>rail</dd><dt>74</dt><dd>mounting element</dd><dt>75</dt><dd>A ball circulation unit</dd><dt>76</dt><dd>direction of movement</dd><dt>78</dt><dd>direction of movement</dd><dt>80, 82</dt><dd>linear guide</dd><dt>90</dt><dd>Hub / pole element</dd><dt>92</dt><dd>air gap</dd><dt>94</dt><dd>permanent magnet</dd><dt>96</dt><dd>field lines</dd><dt>200</dt><dd>Color and / or dampening unit</dd><dt>202</dt><dd>form cylinder</dd><dt>203</dt><dd>printing form</dd><dt>204</dt><dd>transfer cylinder</dd><dt>205</dt><dd>transfer fabric</dd><dt>206</dt><dd>Impression cylinder</dd><dt>208</dt><dd>motor</dd><dt>300a, 300b</dt><dd>segments</dd><dt>302a, 302b</dt><dd>segments</dd><dt>304, 306</dt><dd>segments</dd><dt>308.310</dt><dd>segments</dd><dt>340</dt><dd>primary part</dd><dt>400, 402</dt><dd>segments</dd><dt>600, 602</dt><dd>Winding cores / pole element</dd><dt>604, 606</dt><dd>Winding cores / pole element</dd><dt>608</dt><dd>windings</dd><dt>609</dt><dd>windings</dd><dt>610</dt><dd>nose</dd><dt>620</dt><dd>winding core</dd></dl>