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
• • 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
  • B25B27/0028—Tools for removing or installing seals
• • 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

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) comprising the O-rings for 1 sealing.
• 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 pressurized water comes flatten the perforated plate on a seal carrier on which are mounted the one sealing joints.
• the seal holder can be easily removed from one side of the injector when there is no pressure. The possible replacement of an O-ring can be done outside the injector, and therefore without difficulty. But, because of the thickness of the seal holder from 6 to
• the distance between the perforated plate and the web of non-woven to consolidate is increased, which is unfavorable for the process.
• the available energy of the water jet is reduced as the point of impact of the jet on the fiber web is removed from the perforated plate, and the seal carrier is difficult to achieve.
• the invention aims to greatly shorten the duration of the seal change while using fewer parts than in US 6 012 654.
• 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 arranged, successively in the longitudinal sliding direction of the pad, a ramp away from the upper face as and when it approaches a platform, flat and smooth, forming the lower surface of the lower face, the platform being followed by a training toc.
• the tool comprises means for indicating the direction of introduction of the pad, for example a simple arrow affixed to the pad.
• the 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 which can be closed and at the bottom of which is provided an exit slot surrounded by an endless groove for receiving the gasket, at least one and, Preferably, the two curved portions of the groove being said to be open and the perimeter of the joint being, in the relaxed state, smaller than that of the groove, the following operations can be carried out successively: - A curved section of the joint is retained on the toc;
• the tool is introduced by the first light and sliding the upper surface of the tool under the tunnel ceiling so that the two strands, pushed towards the down the platform, penetrate the throat as the tool progresses,
• the joint of the toc is released, the curved section of the joint thus returning by elastic return in the open curved portion of the groove close to the second lumen, and the tool is pulled out of the tunnel by one of the lumens, preferably , 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 throat, without the need for additional part lowering the seal or the introduction of the perforated plate to press the seal into the groove.
• 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.
• 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 upper face and the lower face is between 5 and 20 mm.
• the tool may be made of a metallic material or a plastic material.
• the tool preferably has a width of between 10 and 30 mm.
• the angle of the ramps can be between 5 ° and 45 °, and in particular 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 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 light on a first face front of the jaw, such that 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 end face of the jaw of the same size as the first light.
• the inlet width of the groove is less than the diameter of the seal, in the relaxed state, the perimeter of the seal is smaller than that of the groove, the seal being thus mounted stretched in the groove, and the outer edge the seal groove is inclined towards the exit slot so that the seal can catch easily.
• the lights are, in operation, blocked by plugs.
• 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
• Figure 4 is a partial sectional view illustrating the position of the tool 19 in the tunnel.
• Figure 5 is a view similar to Figure 3 of a variant.
• the injector shown in FIG. 1 comprises body 1 to which a jaw 2 is screwed, the assembly constituting the injector. Stainless steel that withstands the pressure.
• the body delimits an inner chamber 3 having an inlet and communicating through a slot 4, with the interposition of a perforated plate which is not shown in the drawing, with an exit slot 5 opening out 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 rectilinear opposite portions 8, 9 each delimited by an inner edge 10, 11 and an outer edge 12, 13 and two parts.
• end curves 14 which are both delimited only by an inner edge. In these curved end portions, the groove is said to be open. Part of a seal that falls into the range thus defined will have any ease to come apply 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 these slots 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 slots 15 and therefore that of the tunnel is just greater than the rectangle delimited by the overall dimensions of 1 implementation tool shown in Figure 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, in Figure 3, of the tool 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 lower face (greater than the figure) of the shaft 21 is flat and parallel to the face 20.
• Two ramps 25 symmetrical to each other with respect to the longitudinal axis of the tool are arranged on the longitudinal edges. of the tool.
• the ramps 25 are inclined downwardly in a 15 ° slot from the top surface 20 of the tool to a platform 26 which is at the lowest level of the tool.
• the platform 26 continues with a driving tip 24, which extends in height from the lowest part of the tool, therefore at the same level as the lowest part of the the platform 26 upwards to a height less than that of the platform so as to disengage upwards, a groove 23 open upwards (downwards in the figure).
• the driving tip 24 is located only in the middle part, depending on the width of the underside of the tool. A seal can be placed in this groove 23 and thus threaded onto the driving tip 24, the inner face of the seal coming into contact with the vertical right wall of the platform 26.
• 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 the rightmost edge in Figure 3, the platform 26 and the training toc 24. Two strands coming from the curved section are placed on the ramps 25. While pulling the two strands by hand to stretch them, the tool is introduced by the first light by sliding the upper face of the tool under the ceiling of the tunnel so that the two strands enter the groove 6 as the advanced tool. The tool is taken out of the tunnel by the second light. The seal is released by hand from the groove 23, the curved section of the seal thus returning by elastic return in the open curved portion of the groove near the second lumen. The tool is pulled out of the tunnel by one of the lights.
• the driving tip 24 constitutes the front end of the tool without delimiting a groove 23.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Earth Drilling (AREA)
• Table Equipment (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Coating Apparatus (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37709606

Family Applications (1)

Country Status (5)

Cited By (3)

Families Citing this family (1)

Citations (4)

• 2006
  • 2006-06-13 FR FR0605233A patent/FR2902036B1/fr not_active Expired - Fee Related
• 2007
  • 2007-05-31 AT AT07788818T patent/ATE444836T1/de active
  • 2007-05-31 WO PCT/FR2007/000903 patent/WO2007144480A1/fr not_active Ceased
  • 2007-05-31 DE DE602007002715T patent/DE602007002715D1/de active Active
  • 2007-05-31 EP EP07788818A patent/EP2032315B1/de active Active

Patent Citations (4)

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