EP3684718A1

EP3684718A1 - Manual device for applying a coating to a support by means of tape

Info

Publication number: EP3684718A1
Application number: EP18780197.2A
Authority: EP
Inventors: Arnaud Bez
Original assignee: BIC SA
Current assignee: BIC SA
Priority date: 2017-09-20
Filing date: 2018-09-17
Publication date: 2020-07-29
Also published as: WO2019058049A1; FR3071239A1; US10994962B2; FR3071239B1; US20200223654A1

Abstract

A manual device for applying a coating to a support (10) by means of tape, in which a first angle (al) formed between the median plane (P2) of the applicator tip (26) and the half-line (Dl) extending from the middle (M) of the application edge (26A) of the applicator tip (26) and passing through the point (P18) arranged at the intersection of the outer periphery of the first winding (18) and the radius (R18) of the first winding (18) perpendicular to the median plane (P2), is between -1° and 10°, whereas a second angle (a2) formed between the median plane (P2) and the half-line (D2) extending from the middle (M) of the application edge (26A) and passing through the point (P24) arranged at the intersection of the outer periphery of the second winding (24) and the radius (R24) of the second winding (24) perpendicular to the median plane (P2), is between 1° and 10°.

Description

Manual device for application by tape of a coating on a support

FIELD OF THE INVENTION

The invention relates to the field of manual devices for application by tape a coating on a support. 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

STATE OF THE PRIOR ART

Within the known manual tape application devices, the coating carried by the tape is often damaged before its application, especially during the flow of tape from the supply coil to the applicator tip. There is therefore a need in this sense.

PRESENTATION OF THE INVENTION

An embodiment relates to a manual application device by tape coating on a support comprising a supply coil mounted on a first bearing and comprising a first winding of the ribbon, a recovery coil mounted on a second bearing and comprising a second winding of the tape, and an applicator tip for applying the coating carried by the tape on a support, the applicator tip extending in a longitudinal direction and having an application edge, the application edge and the longitudinal direction defining an application plane while the plane perpendicular to the application plane extending in the longitudinal direction through the middle of the application edge forms the median plane of the applicator tip, in which the angle between the axis of each of the first and second bearings and the plane of application is greater than or equal to 30 ° (thirty degrees of angle), the first bearing and the e second bearing are arranged on either side of the median plane of the applicator tip and, considered in projection on the application plane, a first angle formed between the median plane and the half-line extending from the middle of the application edge and passing through the point disposed at the intersection of the outer periphery of the first winding and the radius of the first winding perpendicular to the median plane, is between -1 ° and 10 ° (minus one degree of angle and ten degrees of angle) while a second angle formed between the median plane and the half-line extending from the middle of the application edge and passing through the point disposed at the intersection of the outer periphery of the second winding and the radius of the second winding perpendicular to the median plane is between 1 ° and 10 ° ° (one degree of angle and ten degrees of angle)

Subsequently, and unless otherwise indicated, by "manual device" is meant "manual device application by tape a coating on a support".

Of course, the tape is continuous from the first winding carried by the supply coil to the second winding carried by the recovery coil. It is understood that the tape flows from the supply reel to the nozzle, passes around the application edge, and then flows from the nozzle to the recovery coil. In general, upstream and downstream are defined not the normal flow direction of the ribbon from the supply reel (which carries the first winding) to the recovery reel (which carries the second winding). It is understood that the portion of the ribbon within the first winding carries the coating while the second winding is essentially formed by the used ribbon, that is to say the ribbon which is missing all or part of the coating. Of course, the primers of the windings can be virgin coating, or on the contrary have a new coating.

It is understood that the manual device has a housing housing the coils (with windings and bearings) and the applicator tip. At least in the use position, the applicator tip protrudes from the housing. The longitudinal direction of the applicator tip is the direction in which the tip protrudes from the housing in the use position. Of course, the application edge is rectilinear and forms an angle with the longitudinal direction. For example, the application edge is perpendicular to the longitudinal direction, but not necessarily. The longitudinal direction and the application edge define a plane, called the application plane. The median plane is the plane that passes through the middle of the application edge and extends in the longitudinal direction being perpendicular to the application plane.

To measure the angle between the axis of each of the bearings and the application plane, we always consider the smallest angle formed between these two geometric elements. According to one embodiment, the axes of the bearings are perpendicular to the application plane or, in other words, the axes of the bearings are parallel to the median plane. To determine the position of the bearings relative to the median plane, the middle of the bearing is considered in the direction of the axis of the bearing, in projection on the axis of the bearing, as a reference point.

It is therefore understood that to go from the first winding (or from the supply reel) to the application edge, the ribbon undergoes a first twist or twist. Similarly to go from the application edge to the second winding (or to the recovery spool) the ribbon undergoes a second twist or spin, which may be similar to the first twist or spin, but not necessarily.

Such a manual device is of the type "lateral application", that is to say for which the axis of rotation of the coils is substantially perpendicular to the application plane (ie forms an angle of between 30 ° and 90 ° with the plan of application). As opposed to hand-operated lateral devices, there are the front-end type hand-operated devices for which the axis of rotation of the coils is substantially parallel to the application plane (ie forms an angle between 0 ° and 30 ° with the plan of application). The main difference for the user between these two types of manual devices is the grip, the application using these two types of manual devices is more or less intuitive for the user.

To measure the angles between the half-lines and the median plane, the reference point to consider in a ribbon winding is the point disposed at the intersection of the outer periphery of the winding considered and the radius of the winding considered perpendicular to the median plane, in the middle in the direction of the axis of the considered winding (ie the middle of the width of the winding / ribbon).

Furthermore, to measure the orientation of the first angle and the second angle, it is checked whether the half-line defining the angle in question with the median plane extends on the same side as the corresponding bearing (ie the first bearing for the first angle and the second bearing for the second angle) relative to the median plane. So, if the half-line extends on the same side as the corresponding landing with respect to the median plane, so the angle is positive. If the half-line extends on the opposite side to the corresponding landing with respect to the median plane, then the angle is negative.

Of course, as and when the use of the manual device, the diameter of the first winding decreases, so that the first angle increases, while the diameter of the second winding increases, so that the second angle decreases. However, the first angle remains between -1 ° and 10 ° and the second angle remains between 1 ° and 10 °, regardless of the state of the windings. This ensures that the tape, although having a certain twist or twist, retains some alignment along the longitudinal direction with the applicator tip throughout the life or use of the manual device.

Such a configuration minimizes the stresses on the ribbon between the windings and the tip, which preserves the integrity of the coating before application. Moreover, this configuration makes it possible to dispense with the elements for guiding and aligning the ribbon with the applicator tip as encountered in the prior art manual devices. This makes it possible to avoid imposing frictional stresses on the ribbon and provides the user with a more flexible application. The tape circulation is thus more natural, including at the applicator tip. This also frees free space within the manual device in comparison with the prior art handheld devices. Thus, it is possible to ship a larger amount of ribbon, which provides a longer life of the manual device.

In some embodiments, the ribbon cooperates only with the supply coil, the recovery coil and the applicator tip.

In other words, the manual device has no guide element other than those possibly present within the supply coil, the recovery coil and the applicator tip.

This makes it possible to minimize the stresses to which the ribbon is subjected, while guaranteeing a minimum space requirement within the manual device, which maximizes the amount of embedded tape.

In some embodiments, the applicator tip comprises a guiding portion having a first twisted surface and a second twisted surface, the first twisted surface cooperating with the ribbon downstream of the feed reel and upstream of the edge. application while the second twisted surface cooperates with the ribbon downstream of the application edge and upstream of the recovery coil, the ribbon being configured to flow from upstream to downstream within the manual device.

For example, the first twisted surface and the second twisted surface are opposed surfaces of one and the same element of the guide portion. Of course, according to one variant, the guide portion comprises two distinct elements respectively forming the first twisted surface and the second twisted surface. For example, the surfaces are twisted around the longitudinal direction of the applicator tip.

It is understood that the guide portion serves to guide and accompany at least partly the spin movement underwent by the ribbon between the windings and the application edge. This reduces, at least to control, the stresses on the ribbon.

In some embodiments, the first bearing and the second bearing are offset relative to each other in the longitudinal direction.

As previously, to determine the position of the bearings, we consider the middle of the bearing in the direction of the axis of the bearing, in projection on the axis of the bearing, as a reference point.

Such a shift of the bearings makes it possible to avoid interference between the two windings, which makes it possible to adjust the position of the bearings relative to the median plane, for example by bringing them closer to the median plane, so as to ensure a still further better alignment in the longitudinal direction of the ribbon with the applicator tip, regardless of the state of the windings. This further reduces the stresses on the ribbon. In some embodiments, considered in the longitudinal direction, the second bearing is disposed between the applicator tip and the first bearing.

By choosing the first bearing as the bearing farthest from the applicator tip, it minimizes the pitch of spin experienced by the ribbon from the first winding, that is to say the ribbon portion having the coating. This minimizes the stresses experienced by the portion of tape bearing the coating, which ensures better integrity of the tape. It will of course be understood that the pitch of the spin experienced by the ribbon which is circulating from the application edge towards the second winding is greater, but remains acceptable, thanks to the alignment in the longitudinal direction of the second winding with the endpiece, to prevent the formation of folds by the ribbon. Moreover, since the coating has already been deposited, this portion of ribbon can undergo a larger pitch without risk to the coating.

In some embodiments, the first winding and the second winding are offset relative to each other in a direction perpendicular to the application plane.

Similarly to the bearings, the reference point is the center of the winding in the direction of the axis of the winding, projected on the axis of the winding as a reference point to determine the position of the winding. Similarly, if one were to determine the position of a coil, one would consider the middle of the coil in the direction of the axis of the coil, projected on the axis of the coil, as a reference point.

Such a shift of the bearings avoids interference between the two windings and the ribbon out / entering the windings, which allows to further optimize the position of the bearings relative to the median plane and ensure a better alignment in the direction perpendicular to the application plane of each winding, and therefore the ribbon, with the corresponding portion of the applicator tip. This further reduces the stresses on the ribbon.

In some embodiments, the first winding is offset relative to the second winding on the side of the first twisted surface while the second winding is offset from the first winding on the side of the second twisted surface

Such a configuration allows to better position the windings vis-à-vis the applicator tip, which further reduces the stresses on the ribbon.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention and its advantages will be better understood on reading the detailed description given below of various embodiments of the invention given by way of non-limiting examples. This description refers to the pages of annexed figures, in which:

FIG. 1 represents a manual device for applying a coating on a support by tape, viewed in perspective, the housing being open,

FIGS. 2A and 2B show the manual device seen according to the arrow II of FIG. 1, according to two states different from the ribbon windings,

FIG. 3 represents the manual device, without the casing, seen according to the arrow III of FIG. 1,

FIG. 4 represents the applicator end of the manual device of FIG. 1, seen in perspective, and

- Figures 5A and 5B show the ribbon path from the first winding to the second winding, within the manual device of Figure 1.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0031] FIG. 1 represents a manual device for applying a coating on a support 10 by tape comprising a housing having in this example a first housing portion 12A and a second housing portion 12B, the housing receiving a housing coil. power supply 14 mounted on a first bearing 16 and comprising a first ribbon winding 18, a recovery coil 20 mounted on a second bearing 22 and comprising a second ribbon winding 24 and an applicator endpiece 26. In this example, the coil of FIG. supply 14 and the recovery coil 20 are coupled in rotation by a belt 30, but of course any other coupling means in rotation of these two coils is possible. Similarly, in this example the bearings 16 and 22 are formed by solidarity trees of the first housing part 12A, but any other configuration is possible. For example the bearings may be integral with a refill cartridge, forming a separate part of the housing.

The applicator tip 26 has an application edge 26A and a guide portion 26B. The ribbon 28 extends, from upstream to downstream, from the first winding 18 (or supply reel 14) to the application edge 26A, bypasses the application edge 26A, and then extends from the application edge 26A to the second winding 24 (or recovery coil 20). The arrows in FIG. 5B are oriented from upstream to downstream and indicate the direction of flow of the ribbon 28. In this example, the ribbon 28 cooperates only with the supply reel 14, the applicator tip 26 and the recovery coil 20.

The ribbon 28 carries a coating 19 upstream of the application edge 26A. The application edge 26A for depositing the coating 19 on a support (not shown), the tape 28 no longer wears coating 19 downstream of the application edge 26A. Of course, the ribbon 28 downstream of the application edge 26A may in some cases have a coating, for example because the ribbon 28 has circulated without application, or because there has been a defect during the application.

The applicator tip 26 extends in a longitudinal direction X. The longitudinal direction X and the application edge 26A (which is rectilinear) define the application plane Pl. In other words, the plane of application PI comprises the application edge 26A and extends in the longitudinal direction X. The plane P2 is perpendicular to the application plane PI, extends in the longitudinal direction X and passes through the middle M of the edge of application 26A. This plane P2 forms the median plane of the applicator tip 26.

Referring to Figures 4, 5A and 5B, the guide portion 26B of the applicator tip 26 has a first twisted surface 26B1 and a second twisted surface 26B2. The first twisted surface 26B1 cooperates with the ribbon 28 downstream of the first winding 18 and upstream of the application edge 26A. The second twisted surface 26B2 cooperates with the ribbon 28 downstream of the application edge 26A and upstream of the second winding 24. In this example, the twisted surfaces 26B2 and 26B1 are substantially parallel and formed by two faces opposite of one and the same element. More particularly, the guide portion 26B is formed in this example by a blade extending in the longitudinal direction X and twisted around the longitudinal direction X. In this example, the pitch of the twist is 2.5 ° / cm (two and five tenths of degrees of angle per centimeter). Moreover, the width of the guiding portion is approximately equal to 135% of the width of the ribbon 28. This makes it possible to accompany the ribbon within the applicator tip as much as possible during variations in the diameter of the windings during the product life.

As shown in FIG. 3, in this example, the axes A1 and A2 of the first and second bearings 16 and 22 are perpendicular to the application plane P1. In other words, the axes A1 and A2 form each an angle with the application plane PI greater than or equal to 30 °. The windings 18 and 24, the coils 14 and 22 and the bearings 16 and 22 being respectively coaxial, the ribbon 18 thus undergoes in this example a twist movement of 90 ° from the first winding 18 to the application edge 26A. Likewise, the ribbon 18 undergoes a twisting movement of 90 ° from the application edge 26A to the second winding (see FIGS. 5A and 5B).

The media M 16 and M22 of the first and second bearings 16 and 22 in the direction of the axes A1 and A2 and in projection respectively on the axes A1 and A2 are arranged on either side of the median plane P2. Thus, within the meaning of the invention, the first and second bearings 16 and 22 are arranged on either side of the median plane P2. This is also visible in Figures 2A and 2B. Moreover, with reference to FIGS. 2A and 2B, the M 16 and M 22 media are offset relative to one another in the longitudinal direction X. Thus, within the meaning of the present invention, the first and second bearings 16 and 22 are shifted relative to each other in the longitudinal direction X. More particularly, in this example, the second bearing 22 is disposed, in the longitudinal direction X, between the applicator tip 26 and the first bearing 16.

With reference to FIG. 3, the media M18 and M24 of the first and second windings 18 and 24 in the direction of the axis A1 and A2 of each of the windings 18 and 24 (the axes of the windings being respectively the same as the windings). axes of the bearings and corresponding coils), in projection on the axis of each winding, respectively, are offset relative to each other in the direction Y perpendicular to the application plane P1. Thus, in the sense of the present invention, the first winding 18 and the second winding 24 are shifted one by one. relative to the other in the direction Y perpendicular to the application plane P1. More particularly, in this example the first winding 18 is shifted with respect to the second winding 24 on the side of the first twisted surface 26B1 of the ferrule 26 while the second winding 24 is offset relative to the first winding 18 on the side of the second twisted surface 26B2 of the endpiece 26.

Figures 2A and 2B each show a projection view on the application plane Pl. In Figure 2A, the manual device 10 is new, so that the first winding 18 has a maximum outside diameter while the second winding 24 has a minimum outside diameter. Conversely, in FIG. 2B, the manual device 10 is completely used, so that the first winding 18 has a minimum outside diameter while the second winding 24 has a maximum outside diameter.

The first angle α1 is the angle formed between the median plane P2 and the half-line D1 extending from the middle M of the application edge 26A and passing through the point P18 disposed at the intersection of the periphery external of the first winding 18 and the radius R18 of the first winding 18 perpendicular to the median plane P2. The second angle α1 is the angle between the median plane P2 and the half-line D2 extending from the middle M of the application edge 26A and passing through the point P24 disposed at the intersection of the outer periphery of the second winding. 24 and the radius R24 of the second winding 24 perpendicular to the median plane P2. As can be seen in FIG. 3, the medium is taken in the direction of the axis of the windings 18 and 24 (ie the middle of the width L of the windings / ribbon) as a reference plane for choosing the points P18 and P24 on the outer periphery of the first and second windings 18 and 24.

In Figure 2A, the half-line Dl extends from the opposite side to the first bearing 16 (that is to say the point M16) relative to the median plane P2. Therefore, the measurement of the angle α1 in Fig. 2A is negative. Conversely, in FIG. 2B, the half-line D1 extends from same side as the first bearing 16 relative to the median plane P2. Therefore, the measurement of the angle α1 in Fig. 2B is positive. In this example, the half-line D2 is always arranged on the same side as the second bearing 22 (that is to say the point M22) with respect to the median plane P2, so that its measurement is always positive.

In this example, in Figure 2A, first winding 18 full, al = - 0.4 ° (minus four tenths of degree of angle) while in Figure 2B, first winding 18 empty, al = 8 ° (eight degrees of angle). Thus, the first angle α1 is always between -1 ° and 10 °, regardless of the state of the first winding 18 (i.e. full, empty or intermediate state between full and empty). In this example, in FIG. 2A, second winding 24 empty, a2 = 6 ° (six degrees of angle) while in FIG. 2B, second winding 24 full, a2 = 1.4 ° (one and four tenths of a degree of angle). Thus, the second angle a2 is always between 1 ° and 10 °, regardless of the state of the second winding 24 (i.e. empty, solid or intermediate state between empty and full). Thus, the ribbon 18 constantly presents a certain alignment in the longitudinal direction X with the applicator tip 26.

Although the present invention has been described with reference to specific embodiments, it is obvious that modifications and changes can be made to these examples without departing from the general scope of the invention as defined by the revendications. In particular, individual features of the various embodiments illustrated / mentioned can be combined in additional embodiments. Therefore, the description and drawings should be considered in an illustrative rather than restrictive sense.

Claims

A manual device for applying a coating on a carrier (10) by tape comprising a feed reel (14) mounted on a first bearing (16) and comprising a first winding of the tape (18), a reel of recovery (20) mounted on a second bearing (22) and comprising a second winding of the tape (24), and an applicator tip (26) for applying the coating (19) carried by the tape (28) on a support, the applicator tip (26) extending in a longitudinal direction (X) and having an application edge (26A), the application edge (26A) and the longitudinal direction (X) defining an application plane (PI) while the plane perpendicular to the application plane (PI) extending in the longitudinal direction (X) through the middle (M) of the application edge (26A) forms the median plane (P2) of the endpiece applicator (26), wherein the angle between the axis (A1, A2) of each of the first and second bearings (16, 22) and the plane of application cation (PI) is greater than or equal to 30 °, the first bearing (16) and the second bearing (22) are arranged on either side of the median plane (P2) of the applicator tip (26) and, considered in projection on the application plane (PI), a first angle (a1) formed between the median plane (P2) and the half-line (D1) extending from the middle (M) of the application edge (26A ) and passing through the point (P18) disposed at the intersection of the outer periphery of the first winding (18) and the radius (R18) of the first winding (18) perpendicular to the median plane (P2), is between -1 ° and 10 ° while a second angle ("2) formed between the median plane (P2) and the half-line (D2) extending from the middle (M) of the application edge (26A) and passing through the point (P24) disposed at the intersection of the outer periphery of the second winding (24) and the radius (R24) of the second winding (24) perpendicular to the median plane (P2) is between 1 ° and 10 °.

A manual application device for tape coating a support (10) according to claim 1, wherein the ribbon (28) cooperates only with the supply spool (14), the recovery spool (20) and the applicator tip (26).

A manual application device for tape coating a support (10) according to claim 1 or 2, wherein the applicator tip (26) comprises a guide portion (26B) having a first twisted surface (26B1 ) and a second twisted surface (26B2), the first twisted surface (26B1) cooperating with the strip (28) downstream of the feed reel (14) and upstream of the application edge (26A) while the second twisted surface (26B2) cooperates with the strip (28) downstream of the application edge (26A) and upstream of the recovery coil (20), the strip (28) being configured to flow from upstream to the downstream within the manual device (10).

4. Manual device for applying a coating on a support (10) according to any one of Claims 1 to 3, by tape, in which the first bearing (16) and the second bearing (22) are shifted one by one. relative to each other in the longitudinal direction (X).

Manual device for applying a coating on a support (10) according to Claim 4 by tape, in which, considered in the longitudinal direction (X), the second bearing (22) is arranged between the applicator tip ( 26) and the first bearing (16).

6. Manual device for applying a coating on a support (10) according to any one of Claims 1 to 5, in which the first winding (18) and the second winding (24) are shifted one by one. relative to the other in a direction (Y) perpendicular to the application plane (PI).

7. Manual device for applying a coating on a support (10) according to Claims 3 and 6 by tape, in which the first winding (18) is offset relative to the second winding (24) on the side of the first surface. twisted (26B1) while the second winding (24) is offset from the first winding (18) on the side of the second twisted surface (26B2).