Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
  • B25B27/0092—Tools moving along strips, e.g. decorating or sealing strips, to insert them in, or remove them from, grooves or profiles
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H18/00—Needling machines
  • D04H18/04—Needling machines with water jets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
  • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
  • B05B1/044—Slits, i.e. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories

Definitions

• the present invention relates to tools for placing a seal in a groove. It also relates to the methods of setting up a seal in a groove and to the water jet projection devices with a seal receiving throat, in which a tool is used for placing the seal.
• water-jet bonding is a great deal of use which is a fibrous web bonding by water jet bonding.
• an injector is required which uniformly distributes the water under pressure, ranging from 1 to 400 bar, over the entire width of the web formed by the machine. Essentially, distribution is through a borehole, then distribution holes, followed by a distribution chamber, and distribution by a borehole, followed by a slot.
• the device for projecting water jets also called injector, comprises in particular a body and a jaw resistant to pressure and delimiting an inner chamber having an inlet.
• the inner chamber communicates with the interposition of a perforated plate with an exit slot opening out of the jaw or the injector.
• An endless groove is machined in the jaw, surrounding the exit slot.
• This groove has the shape of an athletic track having two opposite parts each delimited by an inner edge and an outer edge, and two curved end portions.
• An O-ring is placed in this groove to maintain and seal the perforated plate. The goal is that pressurized water can only exit the injector through the holes (nozzles) in the perforated plate.
• the perforated plate is plated thanks to a mechanical system external to the process, in particular thanks to a piston, against an extractable part (soleplate) having the O-rings for one seal.
• the soleplate can be easily removed from the injector to change the O-rings when the pistons are at rest and there is no pressure in the injector.
• the clamping system requires many additional parts, so the manufacturing cost is high.
• the clamping system gives a great height and a large size.
• the clamping system makes the injector heavier. This system lacks reliability over time due to wear on the piston and tie rods.
• it requires an additional hydraulic system to supply the piston with water or oil under pressure.
• the invention therefore relates to a tool for placing a seal in a groove.
• the tool comprises a shoe having a planar and smooth sliding surface and a lower face on which are formed successively, in the longitudinal direction of sliding of the pad, a drivecap and a ramp away from the upper face to the as it moves away from the knock and approaches a platform, flat and smooth, forming the lowest surface of the lower face.
• the tool comprises means for indicating the direction of introduction of the pad, for example a simple arrow affixed to the pad.
• a simple arrow affixed to the pad.
• a tool according to the invention in a water jet projection device comprising a body and a jaw delimiting, a tunnel, whose cross section is just greater than the largest cross section of the tool (this is also the lowest point section (the highest in Figure 3) of the boom), which opens out at one end by at least a first light that can be closed and in the bottom of which is formed an exit slot surrounded by an endless groove of receiving the seal, at least one and, preferably, the two curved portions of the groove being said to be open and the perimeter of the seal being (in the relaxed state) smaller than that of the groove, one can carry out successively the following operations:
• open throat is meant a throat which has an inner edge but which has no outer edge, so that the throat becomes in this part a wider range than the rest of the throat.
• toc seal by pulling the tool out of the tunnel by a second light that can be closed at the end of the tunnel opposite to the first light through which the tool is introduced. The knock is thus accessible and it is easy to grip the seal by hand and to ensure that it no longer surrounds the knock, but is cleared down.
• the tool is brought back to the first light, which, through the ramp, penetrates the seal in the groove.
• the seal penetrates into the stretched state, because the seal has a perimeter smaller than that of the groove. As the joint is stretched, it is thinned and penetrates easily into the throat, and the tool is pulled out of the tunnel by the first light.
• the tool according to the invention comprises only one part.
• the change of joint in the case of the previous system required two hours.
• a seal can be changed in five minutes.
• the change of seal in the previous system necessitated a setting of the seal on the tool, an introduction of the tool and the seal into the injector, an introduction of the perforated plate to press the seal in the groove, while according to the invention, the seal is put on the tool even when the tool is introduced into the injector and it is the tool itself, by its movement and its conformation, which puts the seal in place in the groove, without requiring additional piece lowering the seal or the introduction of the perforated plate to press the seal in the groove.
• the toc seal is released automatically by the fact that the curved section of the seal is above an open curved portion of the groove when the tool is toward the end of the tunnel remote from the first lumen.
• the toc can be constituted by a simple pad around which is passed the curved portion of the seal, the pad being preferably located only in the middle portion, along the width, of the lower face and upstream in the groove.
• the ramp is located only in the lateral parts, according to the width, of the lower face, in the form of two sub-ramps, on either side of a bar strengthening center. Good results are obtained when the ramp has a length, in the longitudinal direction, of 25 to 100 mm.
• the ramp has a width of between 10 and 30 mm, and the greatest distance between the face upper and the lower face is between 5 and 20 mm.
• the tool may be made of a metallic material or a plastic material.
• the angle of the ramps may be between 5 ° and 45 °, and in particular may be between 10 and 20 °, the best being that it is 15 °.
• the platform has a length considered in the longitudinal direction of the tool of about 20 to 70 mm.
• the subject of the invention is also an assembly consisting of a jet of water jet device with a groove for receiving a seal and a tool for placing the seal according to the invention.
• the water jet projection device comprises in particular a body and a jaw resistant to pressure and delimiting an inner chamber having an inlet and communicating with the interposition of a perforated plate with an exit slot opening out of the jaw or of the injector, an endless groove machined in the jaw by surrounding the exit slot and having two opposing portions each delimited by an inner edge and an outer edge, and two end curved portions of which at least one is delimited only by an inner edge, and a first lumen on a first end face of the jaw, of such a dimension as a tool for placing a seal in the groove can be introduced into the jaw and be removed, and preferably a second light on a second front face of the jaw of the same size as the first light.
• the seal of the toc is released while the tool is out of the tunnel by a second light, while continuing to hold the two strands and releasing the joint of the toc by hand.
• the inlet width of the groove is smaller than the diameter of the joint, in the relaxed state, the Perimeter of the seal is less than the perimeter of the groove, the seal is thus mounted stretched in the groove, and the outer edge of the seal groove is inclined towards the slot so that the seal can easily catch.
• the lights are, in operation, blocked by plugs.
• the toc is chamfered and defines a groove whose bottom width is greater than the diameter of the joint and the width of the top is smaller than the diameter of the joint.
• FIG. 1 is a sectional view of an injector with which the placing tool according to the invention is intended to form an assembly
• Figure 2 is a partial perspective view with removal of the upper body of the end of the tunnel through which the tool is not introduced
• Figure 3 is a perspective view of the tool according to the invention, but while its lower face is, for the sake of better representation, directed upwards
• Figures 4 and 5 are partial sectional views illustrating the position of the tool 19 in the tunnel, Figure 4 while the tool enters the tunnel and Figure 5 while the seal is entered into the throat (when removing the tooling).
• Figure 6 is a view similar to Figure 3 of a variant.
• the injector shown in Figure 1 comprises an upper body 1 which is screwed a jaw 2, the assembly constituting the stainless steel injector that resists pressure.
• the body and the jaw delimit an inner chamber 3 having an inlet and communicating through a slot 4, with interposition of a perforated plate which is not shown in the drawing, with an outlet slot 5 opening outwardly of the jaw or the injector.
• An endless groove 6 is machined in the jaw 2, surrounding the exit slot 5.
• this groove must be mounted an elastic ring 7 of elastomeric material.
• the groove 6 has two straight portions 8, 9 each delimited by an inner edge 10, 11 and an outer edge 12, 13, and two end-curved portions 14 (only one is shown). which are only delimited by an inner edge.
• the groove is said to be open. Part of a seal that falls into the range thus defined will be easily applied to the edge 14 by springback if the seal is previously stretched.
• a second lumen 15 is formed on a second end face of the jaw 2. It has dimensions such that a tool for placing a seal in the groove can pass therethrough.
• a first light 15 of the same size is at the other end of the tunnel 16 delimited by its lights 15, by a face 17 of the body 1 and by the lower face 18 in which the groove 6 is machined.
• the cross section of the lights 15 and therefore that of the tunnel is just greater than the rectangle delimited by the overall dimensions of the positioning tool shown in FIG. 3.
• This tool made of a material that slides easily on stainless steel, consists of a pad having an upper face, rectangular, flat and smooth.
• the left side face of the tool (in Figure 3) is T-shaped having a shaft 21 and a bar 22.
• the bar 22 is rectangular, having a width of 20 mm and a height of 10 mm.
• the shaft 21 is substantially square, having a side of 10 mm.
• the height of the tool H is 20 mm.
• the underside (greater than the figure) of the shaft 21 is flat and parallel to the face 20.
• the shaft 21 constitutes a driving stud or toc, being interrupted by a groove 23 open downwards (upwards in the figure) . A seal can be placed in this groove 23 and thus threaded around the toc 21.
• the underside of the tool is continued by a central bar 24 on which is placed an arrow F indicating the direction of introduction of the tool.
• Two ramps 25, symmetrical to each other with respect to the bar 24, are arranged on the longitudinal edges of the tool. The ramps are inclined at a slope of 15 ° from the lower surface 22 of the bar to a lower platform 26 of the tool which is at the same level as the lower face of the shaft 21 and the bar 24.
• the tool for placing a seal in the groove 6 is used as follows:
• a curved section of a new gasket 7 is placed in the groove 6 in the groove 23 by pressing it on the leftmost edge in FIG. 3 of the shaft 21 serving as a toc. While holding by hand the two strands of the joint resulting from the curved section of the strand retained by the knock, the tool is dragged by the first light in the tunnel to the other end of the tunnel, while the lower face of the tool is turned down 18 of the tunnel, so that the two strands of the seal are placed above the groove 6. The tool is taken out of the tunnel by the light 15 while continuing to hold the two strands, so that the seal is stretched. The seal is released by hand from the groove 23.
• the curved section thus released is elastically retracting on the edge 14, although the seal is still stretched because its length is greater than that of the groove.
• the tool is returned to the first lumen, so that the ramps 25 push the strands of the stretched seal into the groove and the tool is pulled out of the tunnel by the first lumen.
• the rear side wall 27 (left in the figure) the groove 23 'is chamfered so that in the lower part, the groove 23' has a width slightly smaller than the diameter of the seal.
• the seal groove 23 ' has a width greater than the diameter of the seal (thanks to

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Coating Apparatus (AREA)
• Road Repair (AREA)
• Bridges Or Land Bridges (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Auxiliary Devices For Machine Tools (AREA)
• Earth Drilling (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (2)

Family

ID=37649554

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Citations (6)

• 2006
  • 2006-06-13 FR FR0605232A patent/FR2902035B1/fr not_active Expired - Fee Related
• 2007
  • 2007-05-31 WO PCT/FR2007/000902 patent/WO2007144479A2/fr active Application Filing
  • 2007-05-31 AT AT07788817T patent/ATE474693T1/de active
  • 2007-05-31 EP EP07788817A patent/EP2032314B8/de active Active
  • 2007-05-31 DE DE602007007946T patent/DE602007007946D1/de active Active

Patent Citations (6)

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