EP0504073B1 - Ski-Schleifmaschine - Google Patents

Ski-Schleifmaschine Download PDF

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Publication number
EP0504073B1
EP0504073B1 EP92420067A EP92420067A EP0504073B1 EP 0504073 B1 EP0504073 B1 EP 0504073B1 EP 92420067 A EP92420067 A EP 92420067A EP 92420067 A EP92420067 A EP 92420067A EP 0504073 B1 EP0504073 B1 EP 0504073B1
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EP
European Patent Office
Prior art keywords
drum
ski
support
support drum
abrasive belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92420067A
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English (en)
French (fr)
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EP0504073A1 (de
Inventor
Jean-Pierre Bocquet
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SKID SA
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SKID SA
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Filing date
Publication date
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Publication of EP0504073A1 publication Critical patent/EP0504073A1/de
Application granted granted Critical
Publication of EP0504073B1 publication Critical patent/EP0504073B1/de
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/04—Accessories for skiing or snowboarding for treating skis or snowboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/006—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools for edges of skis, snowboards or the like

Definitions

  • the present invention relates to devices for sanding skis, in particular their lower sliding surface.
  • Such devices are generally used for the repair of ski soles.
  • the sanding operation can take place after a reloading operation by overmolding the sliding sole.
  • the apparatuses for sanding skis currently used are generally abrasive belt apparatuses, comprising a frame resting on the ground and supporting the functional organs of the apparatus, a support drum mounted rotatably along a first horizontal axis and forming a zone of support accessible to receive the ski surface to be sanded, a return drum rotatably mounted along a second horizontal axis offset from the first axis, and an abrasive strip stretched between the support drum and the return drum.
  • Tensioning means urge at least one of the drums away from the other to tension the abrasive belt.
  • Motor means make it possible to rotate the support drum and the abrasive belt.
  • Water circulation means project water jets onto the zone of abrasive band surrounding the support drum, and collect the water which flows on the abrasive band after it has passed through the machining zone.
  • the abrasive strip is generally of a width sufficient to sand an alpine ski, that is to say of a width of between 10 and 20 cm approximately.
  • the devices usually used do not, however, have a sufficient width so that the entire width of a snowboard can be sanded during a single pass on the strip.
  • the sanding obtained does not have a surface quality that is always sufficient both in terms of flatness and surface roughness.
  • special sanding devices have already been proposed consisting of a grinding wheel or a rigid drum.
  • Such sanding with a grinding wheel is generally referred to as "stone sanding", ensuring the planning of the lower surface of the ski. It is then necessary to combine, in several passes on different machines, one or more sanding with the abrasive belt and at least one "sanding with stone". Each pass requires adjustments of belt speed, translation speed of the ski on the device, and ski pressure on the abrasive belt or the grinding wheel.
  • the object of the present invention is in particular to avoid the drawbacks of known apparatuses, by proposing a new structure of apparatus for sanding skis in which the same apparatus makes it possible to successively carry out rough sanding operations, "sanding with stone "or planning or flattening, finishing sanding. These various operations are made possible on the same device by means allowing their compatibility.
  • the different working possibilities of the device according to the invention are obtained without significant increase in the volume or the floor area occupied by the device.
  • the invention defines a new machine architecture making it possible to significantly reduce its size, and in particular its footprint.
  • Such an architecture also makes it possible to adapt on the same device, without appreciable increase in price and size, means carrying out sanding with falling edges: according to such sanding, the ski edges undergo a preferential removal of material so that their surface is, at the end of machining, slightly set back from the polyethylene surface constituting the central surface of the ski sole.
  • different settings must be provided depending on whether it is an alpine ski, a monoski, a snowboard, and depending on whether it is a machining of '' roughing, planning or flattening machining, finishing machining.
  • the user simply has to indicate the type of product and the type of step, the adjustments then being carried out automatically.
  • the apparatus further comprises a driving drum, mounted to rotate about a third horizontal axis, movable between a retracted position in which it is away from the support drum to allow the introduction of the end of a ski, and a drive position in which it is brought closer to the support drum and urged in its direction by support means for pressing a ski and keeping it in abutment against the strip abrasive, the driving drum being rotated by a driving motor.
  • a driving drum mounted to rotate about a third horizontal axis, movable between a retracted position in which it is away from the support drum to allow the introduction of the end of a ski, and a drive position in which it is brought closer to the support drum and urged in its direction by support means for pressing a ski and keeping it in abutment against the strip abrasive, the driving drum being rotated by a driving motor.
  • the support drum comprises three successive sections, namely a first end section with elastic surface, a second central section with rigid surface, and a third end section with elastic surface.
  • the total length of the support drum, and the corresponding useful length of the abrasive strip, are greater than the width of a snowboard.
  • the user can sand either an alpine ski, a monoski or a snowboard on the same abrasive belt.
  • the "sanding with stone” or finishing operations are carried out on the second central section with rigid surface.
  • the roughing and surface planning operations are carried out on the first extreme section or the third extreme section with elastic surface.
  • the support drum comprises an additional section with a very elastic surface surrounded by a circular abrasive strip pressed over its entire periphery and having a width at least equal to that of a ski, the circular abrasive strip being of an aggressive type for the steel forming the ski edges and less aggressive for the polyethylene gliding sole, so that the apparatus comprises a support drum zone enabling the edges to fall.
  • FIG. 1 represents an apparatus according to the present invention in a simplified embodiment not comprising a driving drum.
  • the apparatus comprises a frame 1 resting on the ground by feet 2 and supporting all of the functional organs of the apparatus.
  • the functional members include a support drum 3, mounted to rotate about a first horizontal axis I-I, and an upper peripheral zone of which forms a support zone outside the frame 1.
  • the functional members also include a return drum 5, rotatably mounted along a second horizontal axis II-II offset from the first axis I-I.
  • abrasive strip 6 is passed around the support drum 3 and the return drum 5.
  • Tensioning means not shown in FIG. 1, urge the return drum 5 away from the support drum 3 to tension the abrasive strip 6.
  • the upper portion 4 of abrasive strip 6 which covers the external support area of the support drum 3 is accessible by the user and is intended to receive the ski surface to be sanded. To allow sanding of snowboards, it is advantageous to provide that the total length of the drum support 3 and the width of the abrasive strip 6 are greater than the width of a snowboard.
  • a motor 7 is coupled to the support drum 3 by a transmission belt 8, and drives the support drum 3 and the abrasive belt 6 in rotation in the preferred direction of rotation represented by the arrow 12.
  • Water spraying means make it possible to spray water onto the upper portion 4 of abrasive strip surrounding the support drum 3 and to collect the water flowing from the abrasive strip 6.
  • spray nozzles 9 are adapted to send water jets on the upper portion 4 on which the machining is carried out, and a tank 10 is provided in the lower part of the apparatus for collecting the water flowing from the abrasive strip 6, a filter 11 being adapted in the tank 10 to filter the water collected, and pump and pipe means making it possible to draw the water from the filtered part of the tank 10 to send it to the spray nozzles 9.
  • the user must hold a ski in an inclined position and apply its sliding surface against the upper portion 4 of abrasive band 6 surrounding the support drum 3.
  • the user scrolls the ski alternately in the two direction in its inclined direction as represented by the double arrow 130, for successively applying all the portions of the sliding surface of the ski against the abrasive strip.
  • the quality of the surface condition obtained on the sliding surface of the ski depends on several factors, and in particular on the speed of rotation of the abrasive belt 6.
  • the user has a control console 14, provided several buttons allowing it to choose various rotation speeds of the motor 7.
  • an entry table 15 articulated on the frame 1 so as to be able to admit a folded position 151 shown in solid lines on Figure 1 and a deployed horizontal position 152 shown in phantom in the same figure.
  • the entry table 15 constitutes a horizontal support slightly below the level of the upper generator of the support drum 3 and extending in the entry area of the ski perpendicular to the axis II of the drum support 3.
  • Cylinders 153 allow the maintenance of the input table 15 in the deployed position.
  • the support drum 3 is arranged along an axis II located substantially in the same vertical plane IV-IV as the axis II-II of the return drum 5, the support drum 3 being above the return drum 5.
  • the motor 7 is housed between the support 3 and return 5 drums, between the two blanks 61 and 62 of abrasive band connecting said drums 3 and 5. The motor 7 is naturally protected from spraying water by the abrasive belt 6 itself, without requiring additional protective means.
  • the frame 1 carries the same functional organs arranged in the same way as in the embodiment of FIG. 1.
  • certain functional organs have not have been explicitly represented in FIG. 2.
  • Only the additional means constituted by a driving drum 17 and its actuating means have been shown, as well as an output table 16 which can possibly be added, articulated on the frame 1, and which can take a folded position 161 or a deployed position 162 in the ski exit area.
  • the apparatus further comprises a driving drum 17, rotatably mounted along a third horizontal axis III-III.
  • the driving drum 17 is disposed above the support drum 3, its axis III-III being located substantially in the same vertical plane IV-IV as the axes of the support drum 3 and the return drum 5.
  • the drum coach 17 is movable between a raised position, shown in phantom in Figure 2, in which it is away from the support drum 3 to allow the introduction of the end of a ski between the two drums perpendicularly to their axes, and a drive position shown in solid lines in which it is brought closer to the support drum and urged in its direction by support means for pressing a ski and keeping it in abutment against the abrasive strip 6.
  • the driving drum 17 is coated with elastic coaxial rings 170 distributed over its length and responsible for promoting the adhesion of the skiing during his training. These elastic rings will more favorably have a hardness of between 40 and 60 Shore A.
  • the driving drum 17 is rotated around its axis III-III in the direction of arrow 120 by a driving motor, not shown in the figure.
  • the driving drum 17 scrolls the ski horizontally in the direction represented by the arrow 13, against the rotation 12 of the abrasive belt 6.
  • the driving motor is housed inside the driving drum 17 itself, and rotates the outer casing of the driving drum 17 relative to a central shaft 23.
  • the driving motor is adapted to produce at least two distinct driving speeds, namely a slow speed of rotation and a fast rotation speed.
  • the driving drum 17 can also be retracted by pivoting around the transverse axis 180 of the carriage 18, to completely free the upper working portion 4 of the abrasive belt 6, this in order to carry out sanding work by manual drive.
  • the retracted position is shown in phantom in Figure 2.
  • the central shaft 23 is fixedly mounted on a carriage 18 sliding on lateral vertical guides of the frame 1.
  • the carriage 18 comprises two vertical uprights 19 and 20 whose upper ends are connected to two brackets 21 and 22 antero-posterior connected to each other by the fixed shaft 23.
  • the uprights 19 and 20 are further connected to each other by an intermediate crosspiece 24, and they slide vertically in guides respective 25, 26, 27 and 28 lateral of the frame 1.
  • the carriage 18, subjected to its own weight, rests freely by its crosspiece 24 on a cam 29 with horizontal axis of rotation urged by a carriage motor 30.
  • the cam 29 By rotation of the motor carriage 30, the cam 29 performs a cycle during which it deploys by gradually pushing the carriage 18 upward to spread the driving drum 17 relative to the support drum 3, and it then retracts by letting the driving drum 17 towards the supporting drum 3.
  • the driving drum 17 In the retracted position of the cam 29, the driving drum 17 is therefore biased by the own weight of the carriage 18 and of the driving drum 17 in the direction of the supporting drum 3.
  • the weight of the assembly formed by the driving drum 17 and the carriage 18 corresponds to the maximum force required exercise to press the ski against the support drum 3 during the various sanding steps.
  • the carriage motor 30 is controlled by at least one switch 300, actuable by a push-button, or more advantageously actuable by a pedal 310 articulated on the frame 1 along a transverse axis 320 and accessible by the user.
  • the pedal 310 can be arranged on the upper face of the frame 1, to be easily actuated by pressing the sanding ski.
  • the pedal 310 is preferably arranged to itself constitute a ski entry support, supporting the ski in a substantially horizontal position during its passage between the drums 3 and 17.
  • a pulse from the switch causes the realization of 'A complete cycle of the cam 29 according to an ascent and a descent of the driving drum 17, as well as the operation of the other organs of the device.
  • a particularly simple embodiment consists in providing two different bearing forces, which can be chosen according to the steps desired machining. The first, most important bearing force is obtained by leaving the carriage 18 free in vertical translation, to apply the entire weight of the driving drum 17 and the carriage 18. A second, weaker bearing force is obtained by acting a gas spring 31 bearing under the cross member 24 of the carriage 18, to push up the cross member 24 and the carriage 18 carrying the driving drum 17.
  • the thrust of the gas spring 31 can be suppressed by providing that the actuator rod 31 simply abuts against the underside of cross member 24 to push it up, and that a retractable stop 32 allows at will to retain actuator rod 31 in the low position or to authorize its pushing movement of the carriage.
  • the retractable stop 32 is actuated by an electromagnet or electric strike or jack or any other means controlled by the user or by the switch 300.
  • the carriage 18, the cam 29 and the jack 31 constitute suitable support means for produce at least two distinct support forces, a low support force during the intervention of the gas cylinder 31, a high support force when the cylinder 31 is blocked.
  • An intermediate support force can easily be obtained by adding an additional gas spring and electromagnet to obtain an "average" support force. It may indeed prove useful to have an additional adjustment of the pressing force, giving a "medium force", that is to reduce the aggressiveness of a new abrasive belt by passing from a high force to a medium force, or on the contrary to increase the efficiency of a used abrasive belt by passing from a weak force to a medium force.
  • This additional adjustment can be obtained by at least one additional adjustment switch, actuating the additional gas cylinder.
  • the support drum 3 comprises at least a first and a second successive longitudinal sections, each having a length greater than the width of an alpine ski, and having different surface hardnesses, namely a first section with elastic surface having a peripheral zone made of elastic material, and a second rigid surface section having a peripheral zone made of rigid material.
  • the support drum 3 comprises a core 33 of a rigid material such as aluminum.
  • the core 33 constitutes itself the periphery of the central section 34 of the support drum 3.
  • the peripheries of the two end sections 35 and 36 consist of a bandage of an elastic material such as an elastomer. All of the peripheries of the central and peripheral sections 34 and 35 and 36 constitute a generally cylindrical external surface of revolution of the support drum 3.
  • the support drum 3 comprises 3 successive sections, namely a first end section 35 with elastic peripheral surface, a second central section 34 with rigid peripheral surface, and a third end section 36 with elastic peripheral surface.
  • a simplified embodiment may consist in providing a support drum 3 having only two successive sections, for example a section 35 with elastic peripheral surface and a section 34 with rigid peripheral surface.
  • the abrasive strip 6 simultaneously covers all the successive sections of the support drum 3.
  • each section of support drum 3 having a length at least equal to the width of an alpine ski, ie a length greater than approximately 10 cm, it is possible to provide several machining steps, each step using one of the sections of the same support drum 3. But the difficulty is that, when a ski is pressed on the part of the abrasive belt situated opposite a section of support drum 3 with elastic surface, for example the section 35, this support of the ski slightly deforms the peripheral surface of the support drum 3 and tends to unbalance the abrasive strip 6.
  • the present invention provides means for centering an abrasive belt, for guiding said belt and ensuring its maintenance in the vicinity of a position substantially centered on the return and support drums 5.
  • FIG. 3 and 4 Various centering means can be used.
  • the return drum 5 with free rotation along its axis II-II is mounted on a stirrup 37, the stirrup 37 being integral with a central sliding rod 38 slidably mounted on a guide 39 of the frame 1.
  • the rod 38 can also freely pivot in the guide 39 along its longitudinal axis itself located in the vertical plane IV-IV of the apparatus, and perpendicular to the axis II-II.
  • a centering cam 40 actuated by a centering motor 41, and associated with an opposite spring 42, controls the pivoting of the stirrup 37 along its axis determined by the rod 38 in the guide 39, according to a possibility of oscillation of a few degrees on either side of an average position in which the axis II-II is parallel to the axis II of the support drum 3.
  • the motor 41 is controlled by a control device according to produced signals by two feelers 43 and 44 detecting the position of the opposite edges of the abrasive strip 6.
  • the device is adapted so that, when one of the feelers, for example feeler 43, detects a movement of the abrasive strip 6 in the direction of the corresponding end of the return drum 5, the motor 41 is actuated to produce a pivoting of the caliper 37 and of the return drum 5 in a direction causing the abrasive belt 6 to return towards the center of the return drum 5.
  • sections with elastic surface for example sections 35 and 36, consist of a metal drum portion, namely the core 33, covered with a grooved surface layer of elastic material of hardness between 35 and 90 Shore A.
  • this driving drum being coated with coaxial elastic rings such as the rings 170-173, distributed over its length, it is advantageous to provide a particular distribution of the rings making it possible to further increase the possibilities planning a ski with a convex or concave transverse profile.
  • the driving drum 17 comprises two elastic rings 171 and 172 consecutive lines separated from each other by a space 174.
  • the space 174 is advantageously equal to approximately half the distance separating the two lateral dimension lines of an alpine ski.
  • the lateral dimension lines of an alpine ski being spaced from 65 to 95 millimeters, a space 174 equal to approximately 30 to 40 millimeters may be suitable.
  • the two elastic rings 171 and 172 then constitute two lateral support zones, improving the planning of a ski with a concave transverse profile.
  • the driving drum 17 comprises two lateral spaces or zones 174 and 175 devoid of rings and separated by a zone central equipped with two rings 172 and 173.
  • the central zone provided with two rings 172 and 173 has a width equal to approximately half of the distance separating the two lateral dimension lines of an alpine ski, that is to say approximately 30 to 40 millimeters. A central support zone is thus produced, improving the planning of a ski with a convex transverse profile.
  • FIGS. 6 and 7 illustrate such an embodiment in which, on the same axis II, is adapted, in extension of the support drum 3, an additional section 45 with elastic surface.
  • the additional section 45 is not intended to be surrounded by the same abrasive strip 6, but is surrounded by a particular circular abrasive strip pressed over its entire periphery against the section 45, and having a width at least equal to that of downhill skiing.
  • the circular abrasive band is of an aggressive type for the steel forming the ski edges, and less aggressive for the polyethylene gliding sole.
  • the additional section 45 is integral in rotation with the support drum 3, and has substantially the same outside diameter as the support drum 3.
  • the drive drum 17 has a length sufficient to be substantially equal to the total length of the assembly formed by the support drum 3 and the additional section 45.
  • the support means which urge the driving drum 17 in the direction of the support drum 3 allow a fairly large clearance of the driving drum 17, so that the apparatus makes it possible to machine the lower sliding surface of a ski without removing the bindings which are screwed onto the upper surface of the ski.
  • a straddle is adapted on the upper surface of the ski, and the assembly formed by the ski and the straddle is passed between the driving drum 17 and the support drum 3.
  • the straddle can be positioned along the median longitudinal axis of the snowboard, or can be offset laterally, allowing sanding of the bottom surface of the snowboard snow in several passes, even in cases where the snowboard has an unsettled bottom surface.
  • Sanding operations on a lower sliding face of a ski generally require several stages during which the sanding means must work according to distinct parameters.
  • the running speed of the abrasive belt 6 can advantageously be between 5 and 15 meters per second for surface finish finishing steps, and between 15 and 30 meters per second for roughing steps or planning.
  • the running speed of the ski, provided by the driving drum 17, is advantageously between 4 and 6 meters per minute during a rough surface finish step, and between 8 and 12 meters per minute for a step finishing.
  • the support force of the driving drum 17 in the direction of the support drum 3, for alpine skiing can be of the order of 200 newtons for the roughing stages, and of the order of 100 newtons for the stages of surface finish.
  • the contact force can be kept equal to approximately 300 newtons even for the stages of surface finish.
  • the high speed of rotation of the support drum 3 is preferably used, that is to say a tangential speed of between 15 and 30 meters per second, a bearing force of approximately 150 to 200 newtons, and a ski movement speed of between 4 and 6 meters per minute.
  • the present invention provides automatic control means, ensuring complete adjustment of the functional elements of the device according to the operations to be performed on the ski.
  • the apparatus according to the invention comprises means for recognizing the presence of a ski, the type of ski to be sanded as a function of its width, and the type of operation that the user wants to perform on this ski.
  • the type of ski is recognized according to its width, by feelers.
  • the presence of the ski and the type of operation are recognized by detecting the position that the ski occupies along the axis of the drums.
  • the pedals are pushed up by means elastic not shown, and are each supported on a lever actuating one of the four switches 300 to 303 similar to the switch 300 shown.
  • the pedals 310 to 313, not shown are positioned at the input of the device respectively opposite the zones defined by the sections 35, 34, 36 and 45 of the support drum 3, and are each of width less than the respective sections of support drum 3.
  • the switch 301 is actuated. It is the same respectively when the ski is engaged on zones 36 or 45, actuating the switches 302 or 303.
  • One or more of the four pedals 310 to 313 biased by the ski to be machined actuate the respective switches 300 to 303 which send the information to a control circuit, housed in the frame 1 and not shown in the figures.
  • the control circuit can be based on relays, electronic circuits, or any technology within the reach of those skilled in the art to fulfill the desired functions of controlling the functional members such as the motor 7, the motor 41 for centering, the carriage motor 30, the movable stop 32, the water spraying means 9.
  • the water spraying means 9 can advantageously be arranged so as to spray water only on the strip zones opposite the pedal or pedals which have been actuated. Water spray is thus limited to only the areas where this is useful, and the strip cooling effect obtained by this water is concentrated in these areas.
  • the user passes the ski between the driving drum 17 and the support drum 3 in an area of abrasive band corresponding to the section longitudinal 35 having an elastic peripheral surface.
  • the user passes the ski opposite the strip portion corresponding to a section with a rigid peripheral surface such as section 34.
  • the user passes the snowboard simultaneously over the entire width of the abrasive strip corresponding to the three sections 34, 35 and 36 of the support drum 3.
  • the user passes the ski between the driving drum 17 and the additional section 45.
  • the user passes the ski opposite the strip portion corresponding to a stretch with elastic peripheral surface such as the stretch 36. If the ski sole has a concave or tiled transverse profile, the user centers the ski in front of the space 174 separating the rings 171 and 172. The ski is then supported by its lateral zones on the two rings 171 and 172. The absence of support between the two rings 171 and 172 in space 174 concentrates the bearing force of the sanding on the left and right lateral zones of the ski sole to facilitate planning of the ski.
  • the ski sole has a convex or curved transverse profile
  • the user centers the ski opposite the rings 172 and 173 bordered by the spaces 174 and 175 devoid of rings.
  • the sanding support force is then concentrated on the central area of the ski, to help plan the ski.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Catching Or Destruction (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Claims (14)

  1. Maschine zum Schleifen von Skis, bestehend aus:
    - einem Gestell (1), das auf dem Boden steht und die funktionellen Maschinenteile trägt,
    - einer Stütztrommel (3), die um eine erste Horizontalachse (I-I) drehbar montiert ist und eine Stützzone (4) bildet, die zur Entgegennahme der zu schleifenden Skifläche zugänglich ist,
    - einer Rücklauftrommel (5), die um eine zweite Horizontalachse (II-II) drehbar montiert ist, welche zu der ersten Drehachse (I-I) versetzt ist,
    - einem Schleifband (6), welches zwischen der Stütztrommel (3) und der Rücklauftrommel (5) gespannt ist,
    - Spannmitteln für ein Belasten wenigstens der einen Trommel (5) unabhängig von der anderen Trommel (3) und ein Spannen des Schleifbandes (6),
    - motorischen Mitteln (7) für einen Drehantrieb der Stütztrommel (3) und des Schleifbandes (6),
    - Wasserzirkulationsmitteln (9, 10) für ein Verspritzen von Wasser auf die Zone (4) des Schleifbandes, welche die Stütztrommel (3) umgibt, und für ein Sammeln des Wassers, welches auf dem Schleifband fließt,
    dadurch gekennzeichnet, daß:
    - die Stütztrommel (3) wenigstens einen ersten (35) und einen zweiten (34), der Länge nach aufeinanderfolgenden Abschnitt aufweist, welche jeweils eine Länge größer als die Breite eines Alpinskis ergeben und unterschiedliche Oberflächenhärten darbieten, nämlich einen ersten Abschnitt (35) mit elastischer Oberfläche, der eine Umfangszone hat, welche aus einem elastischen Material besteht, und einen zweiten Abschnitt (34) mit steifer Oberfläche, der eine Umfangszone hat, welche aus einem steifen Material wie bspw. Aluminium besteht,
    - das Schleifband (6) alle aufeinanderfolgenden Abschnitte (34, 35, 36) der Stütztrommel (3) gleichzeitig abdeckt,
    - die motorischen Mittel (7) angeordnet sind für einen Drehantrieb der Stütztrommel (3) mit wenigstens zwei verschiedenen angepaßten Drehgeschwindigkeiten entsprechend einer ersten Ausgangs- oder Glättungsstufe, in welcher die Oberflache des Skis bei einer großen Bandlaufgeschwindigkeit geschliffen wird, und einer zweiten Fertigstellungsstufe, in welcher die Oberfläche des Skis bei einer mäßigen Bandlaufgeschwindigkeit geschliffen wird,
    - die Rücklauftrommel (5) mit Schliefband-Zentrierungsmitteln (37-44) versehen ist, um das Schleifband (6) zu führen und ein Halten in der Nähe einer im wesentlichen zentrierten Position auf den Rücklauf- und Stütztrommeln (5, 3) sicherzustellen.
  2. Maschine nach Anspruch 1, bei welcher der Abschnitt (35) mit elastischer Oberfläche aus einem metallischen Trommelteil (33) besteht, der mit einer gerillten Oberflachenschicht aus elastischem Material einer Härte zwischen 35 und 90 Shore A abgedeckt ist.
  3. Maschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß:
    - die Stütztrommel (3) drei aufeinanderfolgende Abschnitte aufweist, nämlich einen ersten äußeren Abschnitt (35) mit elastischer Oberfläche, einen mittleren zweiten Abschnitt (34) mit steifer Oberfläche und einen äußeren dritten Abschnitt (36) mit elastischer Oberfläche,
    - die Gesamtlänge der Stütztrommel (3) und die entsprechende Gesamtbreite des Schleifbandes (6) größer sind als die Breite eines Schneebretts.
  4. Maschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie außerdem eine Antriebstrommel (17) aufweist, die um eine dritte Horizontalachse (III-III) drehbar montiert ist, welche zwischen einer hochgehobenen Position, in welcher sie fern von der Stütztrommel (3) ist, um die Einführung des Endes eines Skis zu erlauben, und einer Antriebsposition ortsveränderbar ist, in welcher sie an die Stütztrommel (3) angenähert und in ihrer Richtung durch Stützmittel (18) belastet ist, um einen Ski zu pressen und ihn gegen das Schleifband (6) gestützt zu halten, wobei die Antriebstrommel (17) durch einen Antriebsmotor in Drehung belastet ist.
  5. Maschine nach Anspruch 4, dadurch gekennzeichnet, daß:
    - die Stützmittel (18) für die Erzeugung von wenigstens zwei deutlichen Stützkräften angepaßt sind, einer mäßigen Kraft und einer erhöhten Kraft,
    - der Antriebsmotor für die Erzeugung von wenigstens zwei deutlichen Antriebsgeschwindigkeiten angepaßt ist, nämlich einer langsamen Geschwindigkeit und einer schnellen Geschwindigkeit.
  6. Maschine nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die Antriebstrommel (17) auf einem Schlitten (18) montiert ist, der auf seitlichen vertikalen Führungen (25-28) gleitet.
  7. Maschine nach Anspruch 6, dadurch gekennzeichnet, daß der gleitende Schlitten (18) frei getragen auf einem Mitnehmer (29) ruht, der seine vertikale Betätigung sicherstellt, wobei der Mitnehmer (29) durch einen elektrischen Schlittenmotor (30) angetrieben wird, der durch wenigstens einen Umschalter (300) gesteuert wird, wobei ein auf den Umschalter aufgedruckter Impuls die Verwirklichung eines vollständigen Mitnehmerzyklus gemäß einer Aufwärtsbewegung und einer Abwärtsbewegung der Antriebstrommel (17) bewirkt.
  8. Maschine nach Anspruch 7, dadurch gekennzeichnet, daß:
    - eine Gashebevorrichtung (31) unter dem gleitenden Schlitten (18) zur Abstützung kommt, um ihn in die Höhe gemäß einer vorbestimmten Kraft zu stoßen,
    - ein Hakenanschlag (32) erlaubt, den Schaft der Hebevorrichtung (31) in einer tiefen Position zuruckzuhalten oder ihre Stoßbewegung des Schlittens (18) zu ermöglichen.
  9. Maschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß:
    - sie eine Stütztrommel (3) und eine Rücklauftrommel (5) aufweist, welche gemäß zweier Achsen (I-I; II-II) angeordnet sind, die sich im wesentlichen in derselben Vertikalebene (IV-IV) befinden,
    - die evtl. vorgesehene Antriebstrommel (17) ebenfalls gemäß einer Achse (III-III) angeordnet ist, die sich in derselben Vertikalebene (IV-IV) befindet,
    - der Antriebsmotor (7) der Stütztrommel (3) zwischen den Stütz- und Rücklauftrommeln (3, 5) angeordnet ist und zwischen den beiden Abschnitten (61, 62) des Schleifbandes (6), welche diese Trommeln (3, 5) miteinander verbinden.
  10. Maschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß sie wenigstens einen herunterklappbaren Eingangstisch (15) aufweist, der an dem Gestell (1) angelenkt und in der horizontal ausgebreiteten Position den Ski vor seinem Durchgang zwischen den Stütz- und Antriebstrommeln (3, 17) trägt, wobei der Tisch (15) vertikal gegen das Gestell (1) heruntergeklappt werden kann.
  11. Maschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Stütztrommel (3) einen ergänzenden Abschnitt (45) mit elastischer Oberfläche aufweist, der über seinen gesamten Umfang von einem plattierten kreisförmigen Schleifband umgeben ist und eine Breite wengistens gleich derjenigen eines Skis darbietet, wobei das kreisförmige Schleifband von einer Art ist, die gegenüber dem Stahl aggressiv ist, welcher die Stahlkanten des Skis ausbildet, und weniger aggressiv ist für die Gleitfläche aus Polyethylen, von solcher Art und Weise, daß die Maschine eine Zone der Stütztrommel (3) aufweist, welche das Anfasen der Stahlkanten zu verwirklichen erlaubt.
  12. Maschine nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß sie ein Steuergerät aufweist, welches eine Reihe von Pedalen (310-313) umfaßt, die an dem Gestell (1) angelenkt sind und eine Reihe von Umschaltern (300-303) entsprechend mehrerer Grundzyklen betätigen, wie bspw.:
    - einen Alpinski-Ausgangszyklus mit einer erhöhten Bandgeschwindigkeit, einer mäßigen Skiantriebsgeschwindigkeit, einer mäßigen oder mittleren Stützkraft,
    - einen Alpinski-Fertigstellungszyklus mit einer mäßigen Bandgeschwindigkeit, einer erhöhten Skiantriebsgeschwindigkeit, einer mäßigen Stützkraft,
    - einen Ski-Planifizierungszyklus mit einer erhöhten Bandgeschwindigkeit, einer mäßigen Skiantriebsgeschwindigkeit, einer erhöhten oder mittleren Stützkraft,
    - einen Schneebrett-Anfangszyklus mit einer erhöhten Bandgeschwindigkeit, einer mäßigen Skiantriebsgeschwindigkeit, einer erhöhten Stützkraft,
    - einen Schneebrett-Fertigstellungszyklus mit einer mäßigen Bandgeschwindigkeit, einer mäßigen Skiantriebsgeschwindigkeit, einer erhöhten Stützkraft.
  13. Maschine nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß:
    - die Antriebstrommel (17) mit koaxialen elastischen Ringen (170) besetzt ist, die über ihre Länge gleichmäßig verteilt sind,
    - im Vergleich zu einem der elastischen Abschnitte (35, 36) der Stütztrommel (3) die Antriebstrommel zwei aufeinanderfolgende elastische Ringe (171, 172) aufweist, die wechselseitig durch einen Zwischenraum (174) gleich etwa der Hälfte des Abstandes voneinander getrennt sind, welcher die beiden seitlichen Maßlinien eines Alpinskis voneinander trennt, die zwei seitliche Stützzonen für die Planifizierung eines Skis mit konkavem Querschnittsprofil bilden.
  14. Maschine nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß:
    - die Antriebstrommel (17) mit koaxialen elastischen Ringen (170) besetzt ist, die über ihre Länge gleichmäßig verteilt sind,
    - im Vergleich zu einem der elastischen Abschnitte (35, 36) der Stütztrommel (3) die Antriebstrommel zwei seitliche Zonen (174, 175) aufweist, die von Ringen frei und durch eine mit Ringen (172, 173) versehene mittlere Zone voneinander getrennt sind, die eine Breite gleich etwa der Hälfte des Abstandes hat, welcher die beiden seitlichen Maßlinien eines Alpinskis voneinander trennt, die eine mittlere Stützzone für die Planifizierung eines Skis mit konvexem Querschnittsprofil bilden.
EP92420067A 1991-03-08 1992-03-04 Ski-Schleifmaschine Expired - Lifetime EP0504073B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9102993A FR2673563B1 (fr) 1991-03-08 1991-03-08 Appareil a poncer les skis.
FR9102993 1991-03-08

Publications (2)

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EP0504073A1 EP0504073A1 (de) 1992-09-16
EP0504073B1 true EP0504073B1 (de) 1995-01-04

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EP (1) EP0504073B1 (de)
JP (1) JPH04336951A (de)
AT (1) ATE116587T1 (de)
CA (1) CA2062297A1 (de)
DE (1) DE69201074D1 (de)
FR (1) FR2673563B1 (de)

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DE4409300A1 (de) * 1994-03-18 1995-09-21 Schloemann Siemag Ag Vorrichtung zum Bearbeiten von Walzen während des Walzvorgangs
US5628678A (en) * 1996-05-03 1997-05-13 Tridico; Frank Shaft sanding device
CH705976A1 (de) * 2012-01-10 2013-07-15 Spuehl Ag Anlage zur Bearbeitung von Laufflächen und den Kanten an Skiern und Snowboards.
US12239899B2 (en) * 2021-04-02 2025-03-04 SWS Sports Boards Industries LLC Snowboards, skis and method of manufacturing same

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DE48904C (de) * G. sagasser in Zwickau i./S., Nordstrafse 6 Centrifugalklärapparat
US2274268A (en) * 1940-05-25 1942-02-24 Hill Acme Company Apparatus for controlling travelling webs
US2477602A (en) * 1943-04-02 1949-08-02 Minnesota Mining & Mfg Contact roll for abrasive belts
US2526423A (en) * 1947-04-10 1950-10-17 Rudorff Dagobert William Apparatus and method for cutting materials
US2729919A (en) * 1952-09-06 1956-01-10 Thompson Grinder Co Method and apparatus for grinding
US2699016A (en) * 1953-11-23 1955-01-11 George G Sherrill Abrading machine
US2934279A (en) * 1955-06-29 1960-04-26 Minnesota Mining & Mfg Production of groundwood pulp
US2827935A (en) * 1956-10-10 1958-03-25 Gen Plywood Corp Method for treating wood surfaces
US3415017A (en) * 1965-05-13 1968-12-10 Zech Murray Corp Apparatus for finishing workpieces under controlled pressures
US4137673A (en) * 1976-04-23 1979-02-06 Tour Barry Ski dressing apparatus
DE3217935C2 (de) * 1982-05-13 1984-12-13 Küsters, Eduard, 4150 Krefeld Bandschleifmaschine für Spanplatten u.dgl.
DE3316154C2 (de) * 1983-05-03 1986-06-19 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Bandschleifmaschine
JPS6048505A (ja) * 1983-08-26 1985-03-16 Hitachi Ltd バツクラツシユ補正装置
US4569552A (en) * 1984-10-04 1986-02-11 Prince Corporation Visor mounting assembly
AT390386B (de) * 1987-05-07 1990-04-25 Montana Sport Gmbh Einrichtung zum bearbeiten von laufsohlen von skiern
DE8914141U1 (de) * 1989-11-30 1991-03-28 Hans Weber Maschinenfabrik GmbH, 8640 Kronach Hybrid-Kontaktwalze für Bandschleifmaschine

Also Published As

Publication number Publication date
EP0504073A1 (de) 1992-09-16
US5203118A (en) 1993-04-20
FR2673563B1 (fr) 1993-06-11
JPH04336951A (ja) 1992-11-25
CA2062297A1 (fr) 1992-09-09
FR2673563A1 (fr) 1992-09-11
ATE116587T1 (de) 1995-01-15
DE69201074D1 (de) 1995-02-16

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