Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
  • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
  • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D7/01—Means for holding or positioning work
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D7/08—Means for treating work or cutting member to facilitate cutting
  • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
  • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
  • B26F1/38—Cutting-out; Stamping-out
  • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
  • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
  • B26F1/38—Cutting-out; Stamping-out
  • B26F1/44—Cutters therefor; Dies therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
  • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
  • B26F1/38—Cutting-out; Stamping-out
  • B26F1/44—Cutters therefor; Dies therefor
  • B26F2001/4454—Die heads carrying several moveable tools
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
  • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
  • B26F1/38—Cutting-out; Stamping-out
  • B26F1/44—Cutters therefor; Dies therefor
  • B26F2001/4472—Cutting edge section features

Definitions

• the invention relates to the field of work of fibrous or cellular insulating materials, and more particularly to methods and devices for cutting one or more through holes through such a fibrous or cellular insulating material.
• Fibrous or cellular insulative materials are used in multiple applications, typically as thermal insulation linings or coatings.
• the use of cellular foam or glass wool is thus known to constitute a thermally insulating barrier in a tank wall for the transport and / or storage of a cold product, for example liquefied natural gas (LNG) which is stored at atmospheric pressure at about -162 ° C.
• LNG liquefied natural gas
• the sealed barrier of the tank consists of a thin sheet metal or other waterproof material that does not oppose a high rigidity to the pressure forces. It is therefore necessary to resume the pressure forces in the thermally insulating barrier.
• modular boxes combining elongated rigid support members, for example small section pillars, with thermal insulation packings, for example in the publications WO-A-2015001230, WO-A-2013017773. and FR-A-2877638.
• EP-A-2492067 discloses a device for making weakened precut lines in a glass wool mat on a conveyor belt.
• This device comprises guillotine type cutting blades which are driven by a rapid vertical movement between a starting position and a cutting position to achieve these pre-cuts. Because the cutting blades work directly on the conveyor belt, a cutting position adapted to completely traverse the glass wool mat is not possible without damaging the conveyor belt by forming incisions therein. As a result, this device is not satisfactory.
• An idea underlying the invention is to provide methods and devices for effectively working fibrous or cellular insulating materials, for example glass wool, to make one or more through holes, in particular holes or openings obtained by removing the insulating material at the hole.
• Some aspects of the invention start from the idea of making these through holes by minimally affecting the insulating material around the hole, namely without excessive tearing or crushing of the insulating material around the hole.
• Some aspects of the invention start from the idea of working thus insulating materials having a relatively high thickness, for example between 10cm and 100cm.
• Certain aspects of the invention start from the idea of precisely controlling the dimensions of the through holes made in the insulating materials.
• the invention provides a cutting method for making a through hole through a piece of fibrous or cellular insulating material, comprising:
• the cutting tool can be made in different ways. According to a first embodiment of the cutting tool, it comprises a hollow body having a profiled shape along the traversing direction, the cutting edge being disposed at one end of the hollow body, the cross section of the hollow body forming a closed contour capable of producing a core of insulating material separated at the end of the pushing step.
• the cross-sectional shape of the hollow body is polygonal, for example rectangular or square.
• a circular shape is also possible.
• More complex hollow shapes are also possible, for example T, L, F, U or H.
• the cutting tool further comprises a plurality of planar notch blades attached to the hollow body at the vertices of the polygonal shape, the length direction of the planar notch blades being parallel to the direction. and the width direction of the planar notch blades being oriented towards the outside of the hollow body, so as to produce notches around the core of the insulating material at the end of the pushing step.
• Such notch blades may be arranged at all or some of the vertices of the polygonal shape, preferably at least the vertices which correspond to protruding edges of the polygonal shape.
• the translational guidance of the cutting tool in the traversing direction can be made more precise.
• the insertion of a solid body into the through hole after removing the core of insulating material is facilitated, since the notches soften the insulating material at the periphery of the hole.
• a notch blade can be oriented in different ways, for example in the extension of a wall of the hollow body or at an angle with a wall of the hollow body.
• a respective notch blade is disposed at at least one vertex or apex of the polygonal shape, the width direction of the respective notch blade being parallel to the bisector of the angle of the polygonal shape at said vertex.
• the cross-sectional shape of the hollow body is square and four said notch blades are arranged in the extension of the diagonals of the square shape.
• the vibratory movement is effected in the crossing direction.
• the method further comprises the step of blowing a gas flow into the hollow body to expel the core of insulating material, for example through the passage hole of the support.
• the cutting tool comprises two tools used successively, each consisting of a plurality of planar blades, the planar blades of the second plurality being arranged relative to the planar blades of the first plurality so that the planar blades of the first plurality and the plane blades of the second plurality together define a closed polygonal contour adapted to produce a core of the insulating material separated at the end of the steps of pushing the two cutting tools.
• the first cutting tool comprises a first plurality of parallel planar blades whose length direction is parallel to the traversing direction and whose width direction is perpendicular to the traversing direction, the cutting edge being disposed at one end of said parallel flat blades.
• the method further comprises:
• a second cutting tool on the side of the second end surface of the piece of insulating material, the second cutting tool having a second plurality of parallel flat blades whose length direction is parallel to the traversing direction and whose width direction is perpendicular to the traversing direction and to the width direction of the parallel flat blades of the first plurality, the cutting edge being disposed at one end of said parallel flat blades facing the second end surface of the workpiece.
• the vibratory movement is effected each time along the width direction of the parallel plane blades.
• This vibratory movement can also be replaced by or combined with a vibratory component oriented in the direction of crossing.
• Such a method can be adapted to pieces of insulating material of various shapes and to various insulating materials.
• the piece of insulating material is a flattened parallelepiped block, the first and second end surfaces being two main surfaces of the parallelepiped block, the traversing direction being a thickness direction of the parallelepiped block.
• the piece of insulating material is made of mineral wool, for example glass wool.
• the piece of insulating material is foamed foam, for example polyurethane foam.
• the piece of insulating material consists of several layers of mineral wool superimposed in a direction of thickness.
• the layers of mineral wool can be clad with siding.
• the invention also provides a cutting device for making a through hole through a piece of fibrous or cellular insulating material, comprising:
• a support having a bearing surface provided with a through hole, the support being able to receive a piece of insulating material bearing against the bearing surface
• a guide member adapted to guide the cutting tool in translation in a traversing direction intersecting the support at the passage hole
• an actuator coupled to the cutting tool and adapted to translate the cutting tool in the traversing direction towards the support at least until the sharp edge reaches the through hole and in opposite direction to a position distant from the support
• a vibrator member coupled to the cutting tool and adapted to impose a vibratory movement on the cutting tool during a translational movement of the tool towards the support.
• such a device may comprise one or more of the following characteristics.
• the cutting tool comprises a hollow body having a profiled shape along the traversing direction, the cutting edge being disposed at one end of the hollow body, the cross section of the hollow body forming a closed contour .
• the guide member comprises a plate arranged parallel to the support on the side of the bearing surface and a guide hole drilled in the plate in alignment with the passage hole of the support in the crossing direction.
• the cutting tool comprising a guide rod engaged in the guide hole of the plate.
• the guide rod of the cutting tool may be formed of a rod attached to a cutting edge of the cutting tool, or directly of a cutting edge of the cutting tool, in the case where such a cutting body has an elongate portion.
• the plate of the guide member is fixed at a distance from the support and / or the plate of the guide member is mounted to move in translation in the direction of passage relative to the support.
• a movable plate it is possible to press the movable plate against an end surface of the piece of insulating material to exert a slight pressure on the piece of insulating material during the cutting operation and to maintain the workpiece position of insulating material.
• the guide member comprises a first plate fixed at a distance from the support and a second plate disposed between the first plate and the support and mounted to move in translation in the traversing direction with respect to the first plate and the support, each of said first and second plates having a guide hole drilled in the plate in alignment with the passage hole of the support in the direction of traverse, the tool for section comprising a guide rod engaged in the guide holes of the first and second plates.
• the support comprises a rectangular base plate having said support surface and four feet fixed to the four corners of the rectangular base plate and having a lower portion extending perpendicularly to the rectangular base plate at the base. opposite the support surface for supporting the rectangular base plate horizontally above the ground.
• the four legs also have a lower portion extending perpendicularly to the rectangular base plate on the side of the bearing surface, the first plate being fixed on the upper portion of the four feet, second Se plateau being guided in translation by the upper portion of the four feet.
• the device comprises a plurality of cutting tools which each have a cutting edge turned towards the support surface of the support and are each guided by the guide member in the direction of crossing, the surface of support of the support being provided with a plurality of passage holes arranged in alignment with each of said cutting tools.
• the device further comprises
• a connecting frame solidarizing the plurality of cutting tools at a portion of the cutting tools opposite to the cutting edge
• a common actuator coupled to the connecting frame for translating integrally the connecting frame and the plurality of cutting tools in the traversing direction, and / or
• a common vibrating member coupled to the connecting frame for imposing vibratory movement on the connecting frame and the plurality of cutting tools.
• the connecting frame carries a plurality of mechanical fasteners, each mechanical fastening device for securing a cutting tool to the connecting frame in a reversible manner.
• the device comprises a plurality of actuators each coupled to a respective cutting tool for translating the respective cutting tool according to the traversing direction.
• the device comprises a plurality of vibrating members each coupled to a respective cutting tool for imposing vibratory motion on the respective cutting tool.
• FIG. 1 is a schematic perspective view of a stack of several mats of glass wool.
• FIG. 2 is a schematic side sectional view of a cutting device according to a first embodiment
• FIG. 3 is a schematic perspective view of a cutting tool used in the device of Figure 2, to achieve a square section hole.
• FIG. 4 is an enlarged view of zone IV of FIG.
• FIG. 5 is a schematic cross-sectional view of the cutting tool of Figure 3.
• FIG. 6 is a diagrammatic perspective view of another cutting tool that can be used in the device of FIG. 2, for making a T-section hole.
• FIG. 7 is a diagrammatic cross-sectional view of the cutting tool of FIG.
• FIG. 8 is a schematic perspective view of another cutting tool that can be used in the device of FIG. 2, to make a T-section hole.
• FIG. 9 is an enlarged view of a cutting head of the cutting tool of FIG. 8.
• FIG. 10 is an enlarged view of a guide rod of the cutting tool of FIG. 8.
• Figure 11 is a schematic side sectional view of a cutting device according to a second embodiment, with the cutting tools in a retracted position.
• Figure 12 is a view similar to Figure 11 with the cutting tools in a cutting start position.
• Figure 13 is a view similar to Figure 11 with the cutting tools in an end of cutting position.
• FIG. 14 is a schematic side sectional view of a cutting device according to a third embodiment, with the cutting tools in an intermediate cutting position.
• FIG. 15 is a schematic perspective view of a cutting device according to a fourth embodiment.
• FIG. 16 is a schematic perspective view of a glass wool mat having through-holes obtained with the cutting device of FIG. 15.
• FIG. 17 is a partial perspective view of an insulating box in which the glass wool mat of FIG. 16 can be used.
• FIG. 18 is a partial perspective view of a cutting device according to another embodiment, showing a first series of blades serving as cutting tools.
• Figure 19 similar to Figure 18 showing a second series of blades for cutting tools.
• FIG. 20 is a partial perspective view of a glass wool mat having a through hole obtained with the cutting device of Figures 18 and 19.
• FIG. 21 is a schematic cross-sectional view of the cutting tool according to an alternative embodiment.
• FIGS. 22 to 26 are schematic cross-sectional views of the cutting tool according to other embodiments.
• FIG. 22 to 26 are schematic cross-sectional views of the cutting tool according to other embodiments.
• a piece of insulating material consisting of a stack of several mats of glass wool will be considered in the examples that follow.
• Such a stack 5 is illustrated in Figure 1 by way of example.
• each mat of glass wool 1 is here coated with a facing 2, for example made of kraft paper or an aluminized sheet, which is bonded to the upper main surface of the glass wool mat 1 to improve its anti-convective properties, and therefore its insulating power.
• the glass wool mats 1 have a direction of length denoted by x and a direction of width denoted by y.
• a mat of glass wool 1 are 10mm to 300mm in the z direction. According to the thickness of the mat 1 and the number of superposed mats, it is understood that the total thickness H of the stack 5 can become high. When it is desired to cut a through hole in the thickness direction z of the stack 5, it is possible to cut each mat 1 individually, but the efficiency of such a method is not optimal.
• the cutting device is shown in a loaded state with a stack of glass wool mats 5.
• a fixed frame of the device 10 consists of a rectangular base plate 11, a rectangular guide plate 12, and four support legs 13 arranged at the four corners of the plates.
• the rectangular plates 11 and 12 are fixed to the four support legs 13, for example by welding, riveting, bolting or otherwise, parallel to each other at a distance from each other, the base plate 11 being attached to a lower portion of the support legs 13 and the guide plate 12 to an upper portion of the support legs 13.
• An intermediate compression plate 14 is disposed in the frame between the rectangular plates 11 and 12 and slidably mounted on the support legs 13, to be able to translate parallel to the support legs 13. In use, the intermediate compression plate 14 is lifted. for inserting the stack of glass wool mats 5 into the frame, on the rectangular base plate 11, and then resting the intermediate compression plate 14 on the stack of glass wool mats 5, in the state shown in Figure 2.
• a cutting tool 15 adapted to cut a hole in the stack of glass wool mats 5 is slidably mounted in a guide hole 16 of the guide plate 12 and in a guide hole 17 of the compression plate 14.
• the base plate 11 also has a through hole 18 aligned with the guide holes 16 and 17 to receive the cutting tool 15 at the end of the stroke. In FIG. 2, the cutting tool 15 is at the beginning of the stroke, applied against the upper surface of the stack of glass wool mats 5.
• a vertical pushing force symbolized by the arrow 19, is applied to the upper end of the cutting tool 15, for example by means of a jack or manually.
• a vibratory stress is applied to the upper end of the cutting tool 15, also in the vertical direction, by means of a motorized vibrating member 20.
• the motorized vibrator member 20 is a rotating machine similar to a percussion drill, incorporating an electric motor.
• the vertical thrust force can be applied to the body of the motorized vibrator member 20, whose mandrel resting on the upper end of the cutting tool 15 transmits both the thrust force and the vibratory stress at the same time. cutting tool 15.
• the motorized vibrator member 20 is replaced by an eccentric beater, while the rotary motor is remote from the cutting tool 15 and connected to the eccentric beater by a flexible transmission for transmitting the rotary movement with eccentric beater.
• the lower end of the cutting tool 15 is sharply configured and thus penetrates into the thickness of the pile of wool mats. glass 5 under the effect of these stresses, until completely through the stack of mats of glass wool 5 and enter the through hole 18.
• the mounting clearance of the cutting tool 15 in the guide holes 16 and 17 is preferably small, for example with a tolerance of +/- 0.25mm.
• the geometry of the guide holes 16 and 17 must of course be adapted to the sectional shape of the cutting tool 15.
• the cutting tool 15 is here adapted to cut a hole of square section. It comprises a tubular profiled body 21 of square section and four flat blades 22 fixed to the lower end of the profiled body 21 along its lateral edges 23, by welding.
• the lower edge of the planar blades 22 is beveled, for example with an angle of about 30 °.
• the lower end edges 24 of the profiled body 21 are machined to have a slight concave curvature in the longitudinal direction of the profiled body 21 and are sharpened, for example by electroerosion.
• the lower end edges 25 of the planar blades 22 and the lateral edges 26 are sharpened.
• the cutting tool 15 is a metal tool which is preferably made of hard and abrasion resistant alloys.
• the profiled body 21 may be made of steel Z160 or 130CDV12 machined by wire electroerosion with a heat pretreatment.
• the planar blades 22 may be made of XC65 or XC75 hardening steel sheet. To increase the longevity of the cutting zones, carbide or ceramic deposits can be applied in these areas.
• the cutting tool 15 can be made with different dimensions in section, for example to cut a square hole whose side measures between 10mm and 50mm.
• the total length of the cutting tool 15 is greater than the distance between the base plate 11 and the guide plate 12.
• the profiled body 21 extends over the entire length.
• a cutting tool 1 15 adapted to cut a hole having a T-shaped section is now described. Elements identical or similar to those of the cutting tool 15 bear an increased reference numeral from 100 to 3 to 5.
• the cutting tool 115 comprises a profiled body 121 having a T-shaped hollow section and eight planar blades 122 welded to the profiled body 121 along its outgoing lateral edges 123 and its re-entrant lateral edges 27.
• the lower edge flat blades 122 is beveled, for example with an angle of about 60 °. All these parts can be made of sheet metal, for example with a thickness of about 1.5mm.
• the lower end edges 124 of the profiled body 121 are sharpened over the entire periphery of the T-section (ie an eight-sided polygon), for example by spark erosion.
• the lower end edges 125 of the planar blades 122 and the side edges 126 are sharpened.
• the cutting tool 1 15 can be made with different dimensions in section.
• the dimension corresponding to the horizontal bar of the T is about 146mm and the dimension corresponding to the vertical bar of the T is about 97mm.
• FIGS. 8 to 10 there is now described another cutting tool 215 adapted to cut a hole having a T-shaped section.
• the same or similar elements as those of the cutting tool 1 15 carry a reference number. increased by 100 with respect to FIGS. 6 and 7.
• the profiled body 221 and the blades 222 form a hollow cutting head 225 of shorter length than previously forming the lower portion of the cutting tool 215 and guide rods 28 complete the cutting tool. 215 in the upper part.
• the lower end edges 224 of the profiled body 221 are no longer in a plane orthogonal to the axis of the profiled body 221, but now have portions inclined in one direction and in the other relative to each other. at this plane, for example about 30 °, so as to define several teeth or points protruding in the direction of translation.
• each half of the portion 31 of the profiled body 221 corresponding to the horizontal bar of the T is divided into an outer portion of which the lower end edge 224 is re-entrant and an inner portion whose lower end edge 224 is outgoing.
• the portion 32 of the profiled body 221 corresponding to the vertical bar of the T is divided into an outer portion of which the lower end edge 224 is reentrant and an inner portion whose lower end edge 224 is outgoing.
• the cutting edge of the profiled body 221 forms three slightly protruding teeth arranged around the junction zone between the portions 31 and 32 and two slightly projecting points located at the lateral ends of the portion 32.
• the number and inclination of the portions inclined along the lower end edges of the profiled body may be modified to form a more or less number of teeth, with more or less pointed shapes.
• three guide rods 28 are welded to the upper part of the profiled body 221 and extend parallel to the axis of the profiled body 221 above the profiled body 221.
• the guide holes 16 of the guide plate 12 must be shaped to receive the guide rods 28, for example three guide holes having the same cross-section as the guide rods 28, and not the cutting head 225. however the guide hole 17 of the compression plate 14 and the through hole 18 of the base plate 11 are shaped to accommodate the cutting head 225.
• the guide rods 28 may have various shapes in section, for example circular and semicircular.
• FIG. 10 shows a cutout formed at the lower end of the guide rods 28 to form an edge 33 perpendicular to the axis, able to bear on the upper edge of the profiled body 221 to improve the transmission capacity of the thrust forces. by limiting the shear stresses in the welds.
• a thrust plate 34 is fixed thereto at the level of the upper part, namely above the guide plate 12 when the tool cut 215 is used in the device 10.
• the guide rods 28 are rectangular section bars obtained in steel sheet 2mm to 4mm thick. For the rest, the cutting tool is similar.
• the cutting tools described above can be used individually in the cutting device 10 to make a unitary hole, or collectively to make several parallel holes by the same operation.
• FIGS. 11 to 13 a second embodiment of the cutting cutting device 110 will now be described.
• the same reference numerals as in Figure 2 are used to designate identical or similar elements. We will therefore describe only the differences with the first embodiment.
• the cutting device 110 is shown in a loaded state with a stack of glass wool mats 5. It comprises two parallel cutting tools 15, each of which is provided with a respective guide hole 16 in the guide plate 12, a respective guide hole 17 in the compression plate 14, and a respective through hole 18 in the base plate 11.
• a thrust plate 35 is fixed on the two cutting tools 15 parallel to the guide plate 12 and above the guide plate 12 in order to be able to translate the two cutting tools 15 in the vertical direction, for example manually or by means of a jack not shown.
• one or more mechanical fasteners may be arranged on the thrust plate 35 on its side facing the material to be cut, namely at each location of the thrust plate 35 where it is expected to be able to place a cutting tool.
• the fixing device is preferably reversibly operable between an attachment position, in which it attaches the cutting tool to the pusher plate, and a release position, in which it releases the cutting tool from the push plate. It thus makes it easy to exchange, add or remove tools depending on the number and shape of the desired holes in the room.
• This mechanical fastening device can be movably mounted on a rail attached to the thrust plate 35 to increase the modularity of the cutting device.
• such a reversible mechanical fastening device can be made with a pin or a screw passing through the cutting tool and the thrust plate 35, a system with spring and pusher being received in holes in the cutting tool, a clipping or screwing system of the tool on the thrust plate 35, etc.
• a common vibrator member 20 may be employed to apply vibrational stress integrally to all cutting tools 15 during the cutting operation.
• FIG. 13 represents the cutting tools 15 at the end of stroke, with the end engaged in the through holes 18.
• this expulsion is effected to the bottom by injecting the flow of air from the upper end of the profiled body 21.
• Fig. 14 shows a third embodiment of the cutter 210.
• the same reference numbers as in Fig. 13 are used to designate like or similar elements.
• the thrust plate 35 is omitted, so that it is necessary to exert the vibratory stress on each of the cutting tools 5, for example by means of respective vibrating members 20.
• several actuators (not shown) can be used to independently move the cutting tools 15, as symbolized by the arrows 19.
• Fig. 15 shows a fourth embodiment of the cutter 310.
• the same reference numerals as in Figs. 2 to 7 are used to denote like or similar elements.
• the cutter 310 has four T-section cutting tools 115 and seven square section cutting tools 15 for piercing the glass wool mats 1 in accordance with the pattern shown in Fig. 16, namely with four through holes. 51 T-section and seven through holes 52 square section, for example to insert unrepresented pillars. Several superposed mats 1 can be drilled in the same operation, competition of maximum thickness of glass wool which depends on the dimensioning of the cutting device 310.
• All the cutting tools 15 and 115 are guided in the same way in vertical translation in guide holes of the guide plate 12 and the compression plate 14.
• the vertical guide of the compression plate 14 is formed by the shape support legs 13, which are in the form of L-shaped perpendicular section profiles. Each corner of the compression plate 14 is thus housed in the interior angle of the support leg 13, with a slight amount of clearance. mounting.
• planar blades 22 and 122 extend here over the entire length of the cutting tools 15 and 115.
• FIGS. 22 to 26 Other possible forms of the cutting tools are schematically illustrated in FIGS. 22 to 26 in cross-section.
• Fig. 22 illustrates a cutting tool 315 having an F-shaped profiled body 321 and notch blades 322 at all projecting ridges.
• F here means a polygonal shape having a longer bar and two shorter bars extending perpendicularly to the longer bar on the same side thereof, respectively at one end and at an intermediate portion of the longer bar.
• Figure 23 illustrates a cutting tool 415 having an L-shaped body 421 and notch blades 422 at all projecting ridges.
• L is meant here a polygonal shape having two perpendicular bars connected by one end.
• Fig. 24 illustrates a cutting tool 515 having an H-shaped body 521 and notch blades 522 at all projecting ridges.
• H here means a polygonal shape having two parallel bars and a bar extending perpendicularly therebetween at an intermediate portion of the two parallel bars.
• Fig. 25 illustrates a cutting tool 615 having a U-shaped profile body 621 and notch blades 622 at some of the edges projecting, here at the base of the U-shape.
• Fig. 26 is similar but shows the notch blades 622 at the projecting ridges remote from the base of the U-shape. polygonal shape having two parallel bars and a bar extending perpendicularly therebetween at one end of the two parallel bars.
• Figures 25 and 26 may also be combined to place notch blades 622 at all projecting ridges.
• notch blades could also be placed at all or some of the re-entrant edges of the profiled body.
• Fig. 17 shows the rigid skeleton of a parallelepipedic insulating block in which the perforated glass wool mat of Fig. 16 can be used.
• the cover plate and the insulating gasket are omitted from FIG. 17.
• a bottom plate 49 made of plywood for example, carries seven supporting pillars 48 arranged in three longitudinal rows, intended to be inserted in the holes 52 with a square section.
• the dimensions of the bottom plate 49, and therefore the glass wool mat to be deposited on it, are for example about 1.2 m by about 1 m.
• corner pillars 40 each have a T-section formed of two perpendicular webs:
• the corner pillars 40 are intended to be inserted into the holes 51 with a T-shaped section.
• the bisecting veil 41 is made of a plywood 9 to 10 mm thick with a length of 100 mm and a height adapted to the thickness of the insulating barrier.
• the counter-bisector veil 42 is made in a plywood 12 mm thick with a length of 200mm. Such thicknesses of plywood are standard and therefore readily available. Alternatively, a densified plywood can also be used.
• a first plurality of mutually parallel flat blades 60 are applied against the upper surface of the piece of insulating material 59 to be punctured.
• the planar blades 60 all have a lower cutting edge intended to cut the insulating material by advancing in the thickness direction of the piece of insulating material, as symbolized by the arrows 119, for example under the thrust of a jack or other actuator.
• the planar blades 60 are animated by a vibratory movement, symbolized by the arrows 61, oriented in the width direction of the parallel flat blades 60, perpendicular to the direction of advance through the piece of insulating material.
• the vibratory movement can be generated, in a variant of the cutting device 10 of Figure 2, providing a corresponding degree of freedom between the guide plate 12 and the feet 13 and urging the guide plate 12 vibratory in this direction, so as to communicate the vibration to the cutting tools, namely here the first plurality of planar blades 60, at the level of the guide holes 16.
• the planar blades 60 of the first plurality are arranged in a first plurality of parallel line segments defining a portion of the polygonal contour of the T-shape. After cutting the entire thickness of the piece of insulating material 59 with the blades 60, these are sprung from the piece of insulating material 59 and a second plurality of mutually parallel flat blades 62 is used in the same way, as illustrated in FIG. 19, to make cuts according to a second plurality of parallel line segments defining the remaining portion of the polygonal contour of the T-shape.
• the blades 62 are oriented perpendicular to the blades 60 and thus vibrate in a direction 63 perpendicular to the direction of the arrows 61.
• FIG. 20 partially represents the piece of insulating material 59 after removal of the core of insulating material, which reveals the hole 51 with a T-shaped section.
• the method described with reference to FIGS. 18 to 20 is easily adaptable to other section shapes, for example a square, rectangular, F, L, U or H shape. It also makes it possible to make dimensions cuts. well controlled, for example with a tolerance less than or equal to 0.5mm.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Treatment Of Fiber Materials (AREA)

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• 2015
  • 2015-06-24 FR FR1555839A patent/FR3037843B1/fr not_active Expired - Fee Related
• 2016
  • 2016-06-20 WO PCT/FR2016/051496 patent/WO2016207524A1/fr not_active Ceased
  • 2016-06-20 KR KR1020187001023A patent/KR102514313B1/ko active Active
  • 2016-06-20 EP EP16741093.5A patent/EP3313629B1/de active Active
  • 2016-06-20 CN CN201680041851.8A patent/CN107921654B/zh active Active

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