Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
  • B65H37/002—Web delivery apparatus, the web serving as support for articles, material or another web
  • B65H37/005—Hand-held apparatus
  • B65H37/007—Applicators for applying coatings, e.g. correction, colour or adhesive coatings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
  • B65H37/002—Web delivery apparatus, the web serving as support for articles, material or another web
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
  • B65H37/002—Web delivery apparatus, the web serving as support for articles, material or another web
  • B65H37/005—Hand-held apparatus

Definitions

• the invention relates to the field of manual devices for application by tape of a coating on a support, and more particularly the applicator tip of such devices. These devices are sometimes known as “mouse” or “ribbon applicator” and are used, but not exclusively, in the field of office automation.
• the coating may be, for example, glue or a white or colored coating.
• Manual devices for application by tape of a coating on a known support generally comprise an applicator tip assembled to a housing projecting from said housing, the endpiece having a blade extending in a longitudinal direction and a lateral direction, a application portion being formed at the distal end of the blade, the application portion including an application edge, and a ribbon disposed longitudinally around the tip in wrapping of the blade so as to bypass the portion of the blade. application.
• the guidance is improved but remains perfectible.
• the wider application portion than the strip rubs the coating layer previously deposited and Alters the latter, which degrades the quality of application of the first and second layers.
• the object of the present invention is to provide a manual ribbon application device whose tip ensures both a guide ribbon improved application quality compared to the devices described above, including avoiding the mentioned drawbacks above.
• the invention relates to a manual device for applying a coating on a support by tape, comprising an applicator tip assembled to a housing projecting from said housing, the endpiece having a blade extending in a longitudinal direction and a direction lateral, an application portion being formed at the distal end of the blade, the application portion comprising an application edge, and a ribbon disposed longitudinally around the tip in the wrapping of the blade so as to bypass the application portion, wherein the width of the application portion is greater than the width of the ribbon and wherein the width of the application edge is greater than or substantially equal to the width of the ribbon and less than the width of the portion application, withdrawals being formed in the application portion in the vicinity of the lateral ends of the application edge, a width being measured in the direction lat rale.
• the manual application device can be both rechargeable type and disposable type. If the manual device is of the rechargeable type, the tip is mounted on the housing of an interchangeable cassette.
• blade designates the portion of the applicator tip that extends between the application portion and means for assembling the applicator tip to the casing.
• the blade has a general shape of flat plate, curved, or having several planar portions inclined relative to each other.
• the blade has, in the direction perpendicular to the lateral and longitudinal directions, an upper side and a lower side.
• the lower side is the side through which the ribbon is fed to the application edge from within the casing of the applicator while the upper side is the side where the ribbon is brought from the application edge to inside the housing of the application device. It is therefore understood that on the lower side, the ribbon supports the coating intended to be applied to the support, while on the upper side the ribbon has no coating, the latter having been deposited on the support.
• the applicator tip includes a wider application portion than the ribbon. It is understood that the application portion is formed by the distal end of the blade which supports and guides the ribbon neighborhood of the application edge. Thus, when the ribbon is moved laterally relative to the blade (of course to a certain extent), thanks to its width, the application portion supports the ribbon over its entire width so that it does not disengage not the tip.
• the application portion includes the application edge.
• This application edge is the portion of the application portion intended to cooperate with the tape to deposit the coating from the tape to the support.
• the application edge presses on the back of the tape (ie side of the tape that does not support the coating), which allows to transfer the coating from the front of the tape (ie side ribbon which supports the coating) towards the support.
• This application edge has a width greater than or substantially equal to the width of the ribbon but less than the application portion.
• substantially equal is meant that the width of the application edge can be up to 10% smaller than the width of the tape.
• the width of the application edge can be up to 5% smaller than the width of the ribbon.
• the application edge has a width greater than or equal to the width of the ribbon. Withdrawals are made in the application portion, the lower side of the blade. Thus, with respect to the lateral direction, the application edge is centered on the application portion, and is framed by the withdrawals. It is therefore clear that the application edge is framed in the lateral direction by two withdrawals, a withdrawal on each side. Preferably the withdrawals are of the same width. Thus, the sum of the widths of the two withdrawals and the application edge is equal to the width of the application portion. Thus, when increasing the width of the application edge, the width of the withdrawals is decreased and vice versa.
• the width of the application edge is less than the width of the application portion, and thanks to the withdrawals, it is avoided during successive applications to rub a portion of the application portion that does not support the tape, to moment of said application, against the coating already deposited on the support and therefore to alter this deposited coating, for example by coming "scratching". It is therefore understandable that the more withdrawals are wide, at least it is likely to alter the coating already deposited.
• the inventors have found that an application edge whose width is up to 10% less than the width of the tape allows application of the coating on a satisfactory support while avoiding the maximum risk of alteration of the coating already deposited in a previous pass. Moreover, even when the width of the application edge is equal to the width of the tape there is no risk of rubbing the application portion against a coating already deposited.
• the width of the application edge may be greater than the width of the ribbon.
• the width of the application edge is at most 20% larger than the width of the ribbon. It is understood that in normal position, that is to say when the ribbon is not moved laterally relative to the application portion, the ribbon is centered with respect to the application edge, so that the Application edge protrudes from each lateral side of the ribbon of the same width.
• Such a width of the application edge improves the quality of application of the coating by the application edge, while having a reduced risk of "scratching" of the coating already deposited on the support.
• the width of the application edge is between 90% and 120% of the width of the ribbon. According to another embodiment, the width of the application edge is between 95% and 120% of the width of the ribbon. According to yet another embodiment, the width of the application edge is between 100% and 120% of the width of the ribbon (i.e. equal to the width of the ribbon or up to 20% greater than the width of the ribbon).
• the quality of application and the guidance of the ribbon are improved compared with known devices.
• guiding is meant the precision with which the ribbon is guided on the applicator tip and the capacity of the tip to limit the deviations of the ribbon relative to the intended path, especially in the lateral direction, during the ribbon scroll.
• quality of application is meant the precision with which the coating is deposited on the support as well as the adhesion capacity of the coating on the support. The inventors have found that the guidance of the ribbon and the quality of application are related.
• a fillet is formed between the application edge and the wall of each withdrawal.
• a leave is a softening of an edge.
• a fillet on a projecting connection between two walls has a convex shape continuous between the two walls while a fillet on a fitting entering between two walls has a continuous concave shape between the two walls.
• this leave attenuates the friction effect of the lateral ends of the application edge on the support, which further reduces the "scratching" effect, and thus avoids altering the coating layers already deposited during an earlier pass.
• a leave makes it possible both to improve the guidance of the ribbon and to preserve the layers of coating already deposited.
• the application portion has a first edge and a second laterally extending edge, the second edge forming the application edge, the width of the first edge being greater than the width of the second edge.
• the second edge is formed by the generatrix of a rounded surface (for example the walls of a fillet) which bears on the back of the ribbon during application to a support.
• Such a second edge has the advantage of not having a sharp protrusion that could alter a coating layer already deposited on a support during a second pass.
• a second edge makes it possible to improve the preservation of the already deposited coating layers, while presenting a satisfactory quality of application.
• the lateral ends of the application portion are rounded.
• the rounded ends of the lateral ends of the application portion make it possible to avoid altering the coating supported by the ribbon in order to improve the quality of application of the coating on the support, while improving the ribbon guide.
• the applicator tip has, in the direction perpendicular to the lateral and longitudinal directions, an upper side and a lower side with respect to the blade, the lateral guiding cheeks of the ribbon extending substantially perpendicular to the blade of the upper side and the lower side of the tip, the cheeks and the blade defining an upper channel and a lower channel for the passage of the ribbon around the tip.
• substantially perpendicular is meant that the formed angle is 90 ° (degree of angle) plus or minus 20 ° (i.e. 90 ° ⁇ 20 °).
• the cheeks and the blade define an upper channel and a lower channel for guiding the ribbon and makes it possible to limit or even avoid the lateral deviations of the ribbon with respect to the applicator tip. This guide channel improves the guidance of the tape, and thus the quality of application of the coating on the support.
• At least a portion of the lower channel and / or the upper channel has a width substantially equal to the width of the ribbon.
• substantially equal widths is meant that the widths have a maximum deviation of 10%, and that the width of the channel is greater than the width of the ribbon. In other words, the width of the channel is equal to or slightly greater than the width of the ribbon. With substantially equal widths, the amplitude of any lateral displacement of the ribbon relative to the applicator tip is reduced or zero. Thus, it improves the guidance, and therefore the quality of application of the coating on the support.
• two cheeks on the upper side laterally opposite to the blade in the lateral direction support a roller, the tape being disposed between the blade and the roller, the roller having a guide cylinder partially embedded in each of the cheeks supporting the roller.
• the roller makes it possible to limit the deflection in a vertical direction (ie direction substantially perpendicular to the longitudinal direction and in the lateral direction) of the ribbon relative to the endpiece. The disengagement of the ribbon on the tip is thus avoided, which improves the guidance of the ribbon on the tip.
• the embedding of the guide cylinder in the cheeks makes it possible to shift the vertical joining plane between the roller and the cheeks, this joining plane being parallel to the walls of the cheeks which laterally guide the ribbon.
• the cylinder has at its lateral ends flanges extending parallel to the cheeks.
• the flanges can spread the ribbon of the vertical joint plane between the roller and the cheeks. In both cases, it prevents the ribbon does not get stuck between the roll and the cheek and does not deteriorate and / or hangs and prevents its scrolling. This avoids altering the ribbon while improving its guidance and thus the quality of application of the coating on the support.
• the guide cheeks comprise, in the longitudinal direction, front cheeks disposed in the vicinity of the application portion and the rear cheeks disposed opposite the application portion with respect to the front cheeks, the front cheeks and the rear cheeks being spaced from each other, the blade being flexible so that the spacing between the front and rear cheeks varies, the portion of the upper front cheeks and / or the portion of the rear upper cheeks facing each other; the other in the longitudinal direction having a lateral projection forming an abutment intended to abut against the cheek portion opposite.
• the blade is flexible and the cheeks include front cheeks and rear cheeks. It is understood that the front and rear cheeks are spaced by a slot or a substantially vertical day (e).
• a lateral projection forms a stop, or portion stop, so that the front cheeks bear against the rear cheeks and prevents any undesirable deformation of the tip.
• the portion of the cheeks before facing the portion of the rear cheeks in the longitudinal direction, or the portion of the rear cheeks facing the portion of the front cheeks in the longitudinal direction, or both portions have at least one lateral projection.
• only one of the two front and / or rear lateral cheeks, or each of the two front cheeks and / or the two rear cheeks may have such a lateral projection.
• the position of the cheeks is thus controlled regardless of the conditions of use so that the guidance is improved. Therefore the quality of application of the coating on the support is also improved.
• the manual application device comprises an upper crossbar and / or a lower crossbar respectively extending laterally between two upper cheeks and two lower cheeks, each crosspiece having a free edge cooperating with the ribbon, said free edge having a shape in V seen in the longitudinal direction.
• the cross member stiffens the cheeks flexion and maintain a substantially constant spacing between the cheeks.
• the upper / lower cross member extends transversely in the upper / lower channel formed by the cheeks and the blade. It is understood that the side edges of the cross member are each connected to a cheek. The edge disposed on the side of the blade is preferably connected to the blade. The edge disposed on the side opposite the blade is free, this edge cooperating with the ribbon. It is understood that the cross member, and therefore the free edge of the cross member, are arranged perpendicular to the longitudinal direction, that is to say the running direction of the tape. Thus, during the scrolling of the ribbon during the use of the manual device, the tape just rub against this side edge.
• the V-shape of the free edge is preferably centered with respect to the cross member and / or with respect to the channel, and / or with respect to the applicator tip in the lateral direction.
• the ribbon is centered in the hollow of the V-shape, which improves the guidance of the ribbon, allows to center the ribbon and avoid lateral deviations of the ribbon relative to the applicator tip, and thus improves the quality of the ribbon.
• the blade has two successive planar portions in the longitudinal direction and forming an angle between them in the longitudinal direction.
• the blade has a first planar portion extending longitudinally from its proximal end, or end through which the blade is connected, directly or indirectly, to means for assembling the applicator tip to the housing, and a second portion planar extending longitudinally from the first portion to the distal blade end.
• the first flat portion and the second flat portion form between them an angle, preferably between 180 ° and 225 ° (degree of angle), that is to say strictly greater than 180 ° and less than or equal to 225 °, this angle being measured on the underside of the blade. Note that the value of this angle is set according to the relative position of the applicator tip relative to the housing of the application device, and with respect to the position of the ribbon.
• This inclination of the second portion relative to the first portion makes it possible to press the ribbon against the second flat portion.
• the plating generates, during the running of the ribbon, the friction forces between the blade and the ribbon. These friction forces hold the ribbon in position in opposition to any lateral deviations of the ribbon relative to the applicator tip.
• the guidance of the ribbon, and therefore the quality of application of the coating on the support are improved.
• the nozzle has means for assembling the housing, the assembly means having a side guide flange ribbon.
• the assembly means comprise an assembly shaft to the casing, the shaft being fitted in a complementary portion of the casing, the free end of the shaft when the endpiece is assembled to the housing having the flange.
• the shaft of the assembly means is replaced by a cylindrical portion intended to be fitted around a housing shaft, this cylindrical portion having the flange.
• This flange serves to guide the ribbon and limit the lateral movement of the latter.
• the guidance of the ribbon, and therefore the quality of application of the coating on the support are improved.
• Each aspect described above contributes to improving tape guidance and the quality of application of the coating to the substrate relative to known hand-held application devices. It is understood that the possible combination of some or all of these aspects creates a synergy ensuring even better guiding and application quality.
• FIG. 1 represents a manual application device according to the invention
• FIG. 2 represents the applicator tip of the device of FIG. 1, viewed in perspective from the upper side (or above),
• FIG. 3 represents the applicator tip of the device of FIG. 1, viewed in perspective from the lower (or lower) side,
• FIG. 4 represents a side view of the applicator tip
• FIG. 5 represents the applicator tip resting on a support, according to the same view as FIG. 4,
• FIG. 6 represents the applicator tip of FIG. 4 seen from the lower side along the arrow VI of FIG. 4, and
• FIG. 7 represents the applicator tip of FIG. 4 seen from the upper side according to the arrow VII of FIG. 4.
• FIG. 1 represents a manual device 10 for applying a coating on a support according to the invention, of the disposable type.
• the manual device 10 comprises a casing 12, an applicator tip 14 projecting from the casing 12, and a ribbon 16 extending around the tip 14.
• the arrow X represents the longitudinal direction
• the arrow Y represents the lateral direction
• the arrow Z represents the vertical direction, these three directions being perpendicular to each other.
• the longitudinal and lateral directions X and Y are parallel to the plane defined by the first flat portion 140a of the blade 140 described later.
• the arrows in thick lines represent the direction of travel of the ribbon 16 around the tip 14.
• the ribbon part which is brought to the tip 14 (lower side of the tip) supports the coating to be deposited on a support while the portion of the tape that moves away from the tip (upper side of the tip) can not support more coating the latter having been deposited on the support.
• the upper side of the tip 14 is visible in Figures 2 and 7 while the lower side of the tip 14 is visible in Figures 3 and 6.
• FIG. 2 and 3 show the applicator tip 14 alone while Figures 4 to 7 show the applicator tip 14 with the ribbon 16.
• the tip 14 has a blade 140.
• the blade 140 comprises a first flat portion 140a and a second flat portion 140b.
• the first and the second flat portion 140a and 140b are arranged successively in the longitudinal direction X and form therebetween an angle ⁇ in the longitudinal direction X.
• a 197.5 °.
• the angle ⁇ is measured on the underside of the applicator tip.
• this angle measurement is performed when the blade 140 is not subjected to any external force, in particular a bending force tending to modify the inclination of the first portion 140a with respect to the second portion 140b, or vice versa.
• the distal end of the blade 140 forms an application portion 144.
• the application portion width Lpa 144 is greater than the width Lr of the 16.
• the application portion 144 has a first edge (or upper edge) 144a and a second edge (or lower edge) 144b forming an application edge. Note that in this example, the second edge 144b is formed by the generatrix of a rounded edge between two intersecting walls. As shown in FIGS.
• the width of the first edge 144a is equal to the width Lpa of the application portion and is greater than the width Lba of the application edge (i.e. of the second edge) 144b. It will be noted that the widths are measured along the lateral direction Y.
• Two recesses 145 are formed in the application portion 144, the lower side of the blade 140, in the vicinity of the lateral ends of the application edge 144b, laterally on either side of the application edge 144b.
• the application edge 144b is centered according to the lateral direction Y relative to the tip 14 (ie the center of the application edge in the Y direction coincides with the median plane in the Y direction of the tip 14).
• the widths Ls of the recesses 145 are equal, the sum of the widths Ls of the recesses 145 and of the width Lba of the application edge 144b being equal to the width Lpa of the application portion 144.
• the application portion 144 has a transverse rib 146 forming a bead of semicircular section.
• the ribbon 16 cooperates with this rib 146 during its travel.
• the rib 146 serves to stiffen the application portion 144.
• a fillet 145a is formed between the application edge 144b and the shrinkage wall 145.
• the lateral ends 144c of the application portion are rounded.
• Two upper cheeks before 141as, two lower cheeks before 141ai, two upper rear cheeks 141bs and two lower rear cheeks 141bi extend in the vertical direction Z.
• the lower and upper rear cheeks 141b1 and 142bs extend from and perpendicular to the first flat portion 140a of the blade 140.
• the lower and upper front cheeks 141a and 141a extend from and perpendicular to the second flat portion 140b of the blade 140. More particularly, the upper and lower front cheeks 141a and 141a1 are supported by the application portion 144.
• the lower and upper cheeks before 141a and 141a are formed in one and the same portion extending vertically on either side of the blade 140, that is to say respectively the lower side and the upper side of the blade 140.
• the front cheeks 141a and 141a are spaced from the rear cheeks 141bi and 141bs by a space 142 forming a vertical slot.
• the front end of the upper front cheeks 141a has a rectilinear portion oriented substantially vertically along the Z direction which forms an angle ⁇ between 55 ° and 90 ° with the longitudinal direction X.
• Such an angle ensures better guidance of the ribbon, for example in the case where the tape would be floating (ie relaxed).
• the upper front and rear cheeks 141a and 141bs as well as the blade 140 form an upper channel 143s for the passage of the ribbon 16, while the lower front and rear cheeks 141a1 and 141bi form a lower channel 143i for the passage of the ribbon 16.
• FIG. 6 represents the lower side of the endpiece 14.
• the spacing in the lateral direction Y between the lower rear cheeks 141bi is equal to the width of the ribbon 16.
• the spacing in the lateral direction Y between the lower cheeks before 141a is progressive in the running direction of the ribbon 16, parallel to the longitudinal direction X, represented by the arrow in thick line: this spacing is decreasing until it becomes equal to the width of the ribbon 16.
• the lower channel 143i has two channel portions, namely a portion between the lower rear cheeks 141bi and a portion between the lower front cheeks 141a1 whose width is equal to the width of the ribbon 16.
• Figure 7 shows the upper side of the tip 14.
• the spacing in the lateral direction Y between the upper front cheeks 141a is progressive in the running direction of the ribbon 16, parallel to the longitudinal direction X, represented by the thick line arrow: this spacing is equal to the width of the ribbon 16 then increases.
• the upper channel 143s has a channel portion, namely a portion between the upper front cheeks 141a, whose width is equal to the width of the ribbon 16.
• the upper front cheeks 141a each have a lateral projection 147. These lateral projections 147 are oriented towards the outside of the applicator tip 14.
• the blade 14 flexes as shown in FIG. because of the support of the tip 14 on the support S, which tends to bring the upper cheeks before 141a and the projections 147 in abutment against the portion facing the upper rear cheeks 141bs, which blocks the bending of the blade 140 and prevents the upper and lower cheeks 141a and 141bs from overlapping in the longitudinal direction X.
• the upper front cheeks 141a support a roller 150 having a guide cylinder 151.
• the ribbon 16 passes between the blade 140 and the cylinder 151 of the roller 150.
• Figure 7 does not represent the roller 150, only the cutouts for mounting by clipping the roller 150 arranged in the cheeks 141ai being represented.
• Cylinder 151 is a subpart of roller 150. Cylinder 150 may be integrally formed, or cylinder 151 may be a separate piece and fit on a roller shaft, with the shaft and cylinder forming the roller. 150.
• the two upper front cheeks 141a have a cutout 148 (see Figures 2 and 7) receiving the lateral ends 151a of the cylinder 151, the latter being thus partially embedded in these two cheeks 141a supporting the roller 150.
• the vertical jointing planes extending along the longitudinal direction X between the lateral ends 151a of the cylinder 151 and the cheeks 141a are offset laterally with respect to the portions of the walls of the cheeks 141a which laterally guide the ribbon 16.
• a bottom rail 149i and a top rail 149s extend transversely respectively between the rear lower cheeks 141bi and the rear upper cheeks 141bs.
• These crosspieces 149i and 149s are arranged in the same vertical plane at the rear of the rear cheeks 141bi and 141bs, the front being defined by the application portion 144 (and thus the rear being the opposite side to the front) .
• the respective free edges 149a and 149a of the lower crosspieces 149i and 149s have a V shape when the crosspieces are viewed in the longitudinal direction X, the bottom of the V being oriented towards the blade 140.
• the bottom of the shape V of the free edge 149ai of the bottom rail 149i extends longitudinally in the first flat portion 140a of the blade 140.
• a longitudinal groove V-shaped formed in the first flat portion 140a of the blade 140 is disposed in the extension, according to the longitudinal direction X of the V-shape of the free edge 149ai of the bottom rail 149i.
• the upper cross member 149s is connected to a flat junction piece 153 arranged parallel to the longitudinal X and lateral Y directions and extending towards the rear of the end piece 14.
• This junction piece 153 is connected on the opposite side to the cross member 149s, to an assembly shaft 154 which extends in the lateral direction Y.
• the assembly shaft 154 and the flat junction piece 153 form the assembly means of the nozzle 14 to the casing 12 of the manual device 10.
• a lateral end 154a of the shaft 154 has a hook
• the shaft 154 is fitted into a complementary portion (not shown) of the housing 12, and the hook 155 cooperates with this complementary portion to lock the assembly of the nozzle 14 to the housing 12.
• the another end 154b of the shaft 154 remains free. This free end carries a flange 156 for guiding the ribbon 16, this flange limiting the lateral deflection of the ribbon 16.
• the tip 14 has assembly means to the housing 12 different from those described above. According to yet another alternative, the tip 14 does not have a flange 156.
• the applicator tip 14 is formed in one piece by injection molding.
• the roller 150 is then assembled to the tip 14 by clipping.
• the tip 14 and the roller 150 are made of plastic material.
• the tip 14 and / or the roller 150 are polypropylene (PP), polyoxymethylene (POM), or polyethylene (PE).
• PP polypropylene
• POM polyoxymethylene
• PE polyethylene
• the roller 150 is in a material different from the tip 14, and this in order to avoid or limit frictional wear phenomena.
• the roll 150 is polyoxymethylene while the tip 14 is made of polypropylene.

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• 2011
  • 2011-10-10 FR FR1159102A patent/FR2981057B1/fr active Active
• 2012
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