Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
  • E04F21/026—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls for applying adhesive or joint compound to joint tapes, in particular drywall tapes
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/165—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
  • E04F21/1655—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for finishing corner joints
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/165—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
  • E04F21/1657—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for applying tape to joints, e.g. drywall taper tools

Definitions

• the present invention relates to a tape applicator with an adjustable coating flow rate and a method of adjusting the coating flow rate of such an applicator.
• Such an applicator is intended for laying a strip of paper or similar material, in the form of a roll, between two adjacent plasterboards, under construction or under renovation, and this by means of a pasty plaster.
• the coating fills the space between the two plates and the strip keeps it together.
• the tape is laid between two plates arranged on the same plane or at an angle. Once the plaster and tape are in place, the user smooths it out with a flat or angled spatula for angles. The tape thus ensures a perfectly smooth seal between the plates.
• Bowel comprising a plaster tank and a reel of a jointing tape on a roll for performing numerous joints, especially on large construction sites.
• the reservoir has, with reference to the position of use, a rear wall defining an entrance slot for the strip and a front wall defining an exit slot for the strip.
• An application head is generally intended to be fixed to the wall
• Document WO201 1094820 describes an application head shaped to apply a strip between two plasterboards forming an angle between them.
• the head comprises a plate for attachment to the applicator, the plate being extended by a fixed arm supporting a corner roller having a V-shaped profile for applying the strip at an angle.
• This head has many drawbacks. This is because it is only suitable for angled tape application, so it must be removed to reassemble an application head suitable for flat tape application. So you need two separate heads, which is tedious and risks losing one of the two heads.
• the plate is intended to be fixed inside the reservoir and to cooperate with an axis of an external adjustment screw provided with an eccentric, and which not only allows the fixing of the plate, but also his
• An objective of the present invention is therefore to provide a strip applicator provided with adjustment means that are easy to use, robust and precise, that is to say not very sensitive to abrasion and to heat, and inexpensive, ie easily replaceable independently of the application head.
• Document FR3007439 describes a multifunction application head which also has the advantage of not requiring disassembly between the two functions (the application of the strip flat and the application at the corner).
• the application head of this document comprises a plate of
• An objective of the present invention is therefore to provide a tape applicator provided with adjustment means which can be reversibly coupled (to allow independent change) to an application head arranged outside the reservoir. to allow simultaneous adjustment of the height of the exit slot and the position of the applicator head.
• the sliding function is deported outside the tank, which makes it possible to limit the number of parts inside the tank and to only have to change these, and not the sliding mechanism. It also allows the sliding mechanism to be incorporated into the dispenser head, allowing the dispenser head and the adjustment pieces inside the reservoir to slide at the same time.
• the invention relates to a jointing tape applicator between two plasterboards, the applicator comprising a reel for a jointing tape in roll and a coating tank in which the tape is unwound, in use, the reservoir having, with reference to the position of use, an inlet slot for the strip formed between a free end of a rear wall of the reservoir and a first free end of a lower wall of the reservoir, and a strip outlet slot formed between a free end of a front wall of the tank and a second free end of the bottom wall of the tank, the tank further comprising two side walls, one of which constitutes a removable side cover access to the interior of the tank, the outlet slot having a determined height and being provided with height adjustment means.
• the adjustment means include:
• a fixing plate slidably fixed against an outer contact face of the front wall of the tank, the contact face comprising a sliding guide, of determined length, provided with an oblong hole, the fixing plate comprising a stop sliding cooperating in
• the sliding stop being of greater length than the determined length of the sliding guide, and provided with a central hole;
• the orifice of the plate may be polygonal and the coupling and clamping axis comprises a polygonal cylindrical portion of a shape complementary to the polygonal hole and intended to be inserted into the polygonal hole to prevent rotation of the plate around the coupling and clamping pin;
• the plate may have a second orifice, the coupling and clamping axis comprising a bearing head against the plate provided with a locking pin intended to be engaged in the second orifice to prevent rotation of the plate around coupling and clamping axis;
• the fixing means may include a quick-release lever comprising a cam pivotally and eccentrically fixed to a coupling member fixed to the coupling and clamping axis;
• the sliding stop carried by the bearing face of the fixing plate may be constituted by an oblong groove slidingly cooperating with the sliding guide carried by the contact face of the front wall of the tank, the sliding guide being an oblong rib;
• the sliding stop carried by the bearing face of the fixing plate may be constituted by an oblong rib slidingly cooperating with the sliding guide carried by the contact face of the front wall of the tank, the sliding guide being an oblong throat;
• the plate can be made of stainless metal
• the plate may be a mounting plate for an application head, the mounting plate comprising a fixing core and two flanks perpendicular to the fixing core each having two orifices facing each other in pairs to receive a first axis of rotation and a second axis of rotation parallel to each other, the first axis of rotation carrying two notched rollers belt drive, the application head further comprising:
• a spring comprising two support legs against the mounting plate, each extended by an elbow connected to a locking arm provided with a notch for locking the connecting rods in the use position, the locking arms extending in a plane intersecting a plane passing through the two legs, the arms being connected to each other by a return hoop extending in a plane secant to the plane passing through the two locking arms
• the locking means may include at least one locking claw and at least one stopper shaped so that at least one connecting rod is maintained, in the blocking position, resting against the stop by the claw;
• the claws and / or the connecting rods can be shaped to allow a force release of the connecting rods out of the claws;
• the free end of the rear wall of the reservoir and the first free end of the lower wall of the reservoir may comprise a cylinder of section greater than a thickness of the wall to which each cylinder is attached, each cylinder being covered by a sleeve of removable protection, of interior section complementary to the cylinder that the sleeve covers, each protective sleeve having a longitudinal opening delimited by two locking edges against the wall carrying the cylinder that the sleeve covers.
• the subject of the invention is also a method of adjusting the flow rate of the coating of a jointing tape applicator between two plasterboards
• FIG. 1 shows a schematic perspective view of a tape applicator according to the invention in the position of use, that is to say in the position of application of a tape;
• FIG. 2 is a schematic perspective view of the tape applicator of Figure 1 in which the access cover to the interior of the reservoir is open;
• FIG. 3 shows a schematic exploded partial perspective view from a first viewing angle of a first embodiment of the means for adjusting the height of the exit slot of an applicator according to the invention
• FIG. 4 represents a schematic view in partial perspective exploded from a second angle of view of the means for adjusting the height of the exit slit of an applicator according to the invention of FIG. 3 showing the height adjustment plate of the slit tape output;
• FIG. 5 a schematic perspective view of an advantageous embodiment of a spring for an applicator head which can be combined with height adjustment means according to the invention
• FIG. 6 shows a schematic perspective view of a second embodiment of an applicator according to the invention further comprising a system for protecting the tape entry slot;
• FIG. 7 is a schematic perspective view of an enlargement of Figure 6 centered on the tape entry slot, which includes abrasion protection sleeves;
• FIG. 8 is a schematic exploded perspective view of FIG. 7 illustrating the particular structure of the protective sleeves according to the invention.
• the applicator 1 comprises a reel 2 for a jointing strip in
• roller 3 (shown in dotted lines) and a coating reservoir 4 in which the strip unwinds, in use.
• the applicator also includes a gripping handle 5 for its transport or operational handling during the application of the strip.
• the applicator can include a gripping strap (not shown) allowing the applicator to be gripped from below.
• the reservoir 4 has, with reference to the position of use, an inlet slot 6 of the strip formed between a free end 7a of a rear wall 7 of the reservoir and a first end free 8a of a lower wall 8 of the tank.
• the reservoir 4 also includes an outlet slot 9 of the strip
• the tank further comprising two side walls 1 1 and 12, one of which constitutes a removable side cover 1 1 allowing access to the interior of the tank 4.
• the outlet slot 9 of the strip is formed between a free end 10a of a front wall 10 of the reservoir and a second free end 8b of the lower wall 8 of the reservoir.
• the height H1 of this slot determines the amount of coating carried by the belt.
• the invention proposes to mechanically couple to a mounting plate 1 10 outside the tank 4, an inside plate to the tank 4, structurally independent of the plate, and able to slide relative to the slot to reduce the resulting height H2 of the slot 9 and, thus, reduce the quantity of coating deposited with the strip.
• the adjustment means comprise an adjustment plate 16 of a height H2 of said outlet slot, the adjustment plate 16 being arranged inside the tank, against an interior face 10c of the front wall 10 of the tank.
• the invention provides that the contact face 10b of the front wall 10
• the sliding guide 14 comprises a sliding guide 14, longitudinal and perpendicular to the exit slot 9.
• the sliding guide 14 is provided with an oblong hole 15. As will be described later, the length of the oblong hole determines the sliding length of the adjustment plate and therefore the resulting height H2 of the exit slot 9.
• the adjustment means also comprise a coupling and clamping pin 17 of the plate 16 which is engaged in an orifice 16a of the plate 16 and in the oblong hole 15 of the sliding guide 14.
• the adjustment means also comprise a mounting plate 1 10 slidably fixed against an outer contact face 10b of the front wall 10 of the tank.
• the plate 1 10 comprises at least one fixing core 1 1 1 which comprises a bearing face 1 1 1 a intended to bear against the contact face 10b of the front wall 10 of the tank, in the position of fixation.
• the plate 1 10 may include other structures than the core 1 11, such as sidewalls 1 12a-1 12b which can have a support function of at least one roller for applying the band.
• the bearing face 1 1 1 a of the fixing core comprises a sliding stop 11 1 b provided with the hole 1 15 arranged centrally relative to the sliding stop.
• the sliding stop 1 1 1 b cooperates in sliding with the sliding guide 14.
• the hole 115 is intended to be crossed by the coupling and clamping pin 17 for fixing the plate 1 10 against the front wall of the tank.
• the fixing means also comprise means for setting
• the fixing means In the preferred embodiment illustrated, the fixing means
• a quick release lever 1 16 comprising a cam 1 16a pivotally fixed along the axis XX and eccentric to a coupling member 1 17 intended to be fixed to the coupling and clamping axis.
• a washer 1 18 is provided between the coupling member and the fixing core 1 1 1 to protect the latter from the friction of the cam 1 16a during
• the sliding stop 1 1 1 1 b carried by the bearing face 1 1 1 a of the fixing core 1 1 1 consists of an oblong groove intended to cooperate with the guide sliding 1 14 carried by the contact face 10b of the front wall 10 of the tank, the sliding guide 1 14 being an oblong rib of complementary shape, except in length, of the groove 1 1 1 b.
• the groove carried by the fixing web will have a length L3
• the rib carried by the reservoir will have a length L2 less than the length L3.
• sliding carried by the bearing face of the fixing core is constituted by an oblong rib intended to cooperate with the sliding guide carried by the contact face of the front wall of the reservoir, the sliding guide being an oblong groove.
• the groove carried by the reservoir will have a length L3
• the rib carried by the fixing core will have a length L2 less than the length L3.
• the coating flow rate is the amount of coating per unit of strip area: the higher the slot, the greater the amount of coating under the strip and therefore the greater the coating flow.
• the lever 1 16 is rotated so as to position the cam 1 16a at a smaller distance from the washer.
• the clamping tension exerted on the coupling and clamping pin 17 is therefore reduced.
• the means for switching on / off the coupling and clamping pin 17 are then actuated to allow clamping of the plate and of the plate against the front wall of the tank.
• the lever 1 16 is rotated so as to position the axis of rotation XX of the cam 1 16a at a greater distance from the washer, which increases the clamping tension exerted on the axis of coupling and clamping 17.
• the orifice 16a of the plate 16 is polygonal and the coupling and clamping axis 17 comprises a polygonal cylindrical portion 17a of complementary shape to the polygonal hole 16a and intended to be inserted into the polygonal hole 16a to prevent rotation of the pack around the coupling and clamping axis. This easily ensures perfect parallelism of the functional edges of the exit slot 9 during application.
• the plate may have a second orifice, the axis of
• coupling and clamping comprising a bearing head against the plate provided with a locking pin intended to be engaged in the second hole to prevent rotation of the pad around the coupling and tightening axis.
• the structure of the adjustment means according to the invention also allows easier adjustment of the height H2. Indeed, the adjustment is generally made when the applicator is placed on a support, by the lower face 8. In this position, it is generally difficult to see the exit slot 9 due to the presence of a head of application.
• the plate 1 10 has a distal rectilinear rim 1 19, that is to say at the opposite end of the outlet slot 9, which makes it possible to constitute an adjustment mark with respect to a scale 13 graduated parallel to the distal rectilinear edge 19 and which is carried by the outer contact face 10b of the front wall 10 of the reservoir.
• This scale thus directly represents the exit slit, so that the user can directly view, above the locking head, the measurement of the opening of the exit slit which is located below the plate and which is not visible when the user is adjusting the height of the exit slit.
• the adjustment means according to the invention therefore allow adjustment in
• This structure allows to provide that the mounting plate carries a head
• the structure of the adjustment means and, in particular the use of an external plate, makes it possible to carry means which perform a particular application function of the strip such as, in particular, an application at an angle, a head of tape cutting, etc.
• the latter is advantageously made of stainless metal, which is more resistant to heat and to the abrasion of the coating and the strip than the plastic generally used for the manufacture of the application heads.
• the plate 1 10 is a fixing plate of an application head 100, the fixing plate comprising a fixing core and two flanks perpendicular to the fixing core each having two orifices facing each other two by two to receive a first axis of rotation 120 and a second axis of rotation 130 parallel to each other.
• the first axis of rotation carries two notched rollers 121 for driving the band.
• the application head 100 further comprises two connecting rods 131 mounted in free rotation by a first end on the second axis of rotation, between a retracted position and a position of use.
• a second end of each connecting rod is mounted in free rotation on a third axis of rotation, on either side of an angle caster 133, itself in free rotation on the third axis of rotation.
• the application head 100 also includes a spring 140 such as that shown in Figure 5.
• the spring comprising two legs 141 bearing against the fixing plate, each extended by an elbow 142 connected to a locking arm 143 provided with a locking notch 144 of the connecting rods in the use position.
• the locking arms 143 thus extend in a plane secant to a plane
• a spring winding 145 is arranged between the free ends of the support legs 141 and the elbows 142 connecting to the arms 143.
• This winding 145 performs two functions simultaneously: an elastic return function which allows the entire part the portion of the legs connected to the elbows 142, the elbows 142, the arms 143 and the arch 146 to pivot together while the portion of the legs carrying their free end remains in contact with the fixing plate 1 1 1.
• the winding also makes it possible to accommodate the second axis of rotation 130 , which maintains the spring in position and ensures a pivoting of the spring around the axis of rotation 130.
• the application head 100 comprises reversible locking means of the connecting rods in the retracted position, independent of the spring 140.
• These locking means here comprise at least one locking claw 151 and at least one stop 152 shaped so that 'at least one connecting rod is held in the locking position, resting against the stop by the claw.
• the claws and / or the connecting rods are shaped to allow force unlocking of the connecting rods out of the claws to move into the application position of the angled strip.
• the invention also provides means for limiting the leakage of coating at the level of the entry slot 6 of the strip 3. These means, by reducing the leaks as a function of the viscosity of the coating, allow a better control of the plaster flow at the exit slot 9.
• the free end 7a of the rear wall 7 of the tank and the first free end 8a of the bottom wall 8 of the tank each comprise a cylinder, respectively 7a1 and 8a1, of section D1 - greater than a thickness E1 of the wall (7 and 8 respectively) to which each cylinder 7a1 and 8a1 is attached.
• each cylinder, respectively 7a1 and 8a1 is covered by a removable protective sleeve, respectively 201 and 202, of inner section complementary to the cylinder, respectively 7a1 and 8a1, which the sleeve covers.
• Each protective sleeve 201 and 202 has an opening
• the sleeves 201 -202 are thus self-locking against the wall which carries the cylinders, because the edges 201 b-202b of the longitudinal openings 201 a-202a are arranged at the junction between the wall and the cylinder, which junction has a inflection point preventing the sleeves from sliding or falling out of the cylinder.
• These sleeves are advantageously made of metal, such as stainless steel.
• the maintenance method of such a tape applicator comprises a first step of opening the side wall constituting the removable side cover 1 1 to access the interior of the reservoir 4 and the free ends 7a and 8a of the rear wall 7 and the lower wall 8.
• the worn protective sleeve (s) 201 -202 is removed from the free ends 7a and 8a of the rear wall 7 and / or the bottom wall 8 of the tank by sliding them along the cylinders 7a1-8a1 carried by said free ends.
• New protective sleeves are then inserted by sliding them along the cylinders 7a1 -8a1 carried by the free ends of the rear wall and of the lower wall of the tank. For this, we align the longitudinal opening of each sleeve with the wall 7 or 8 yet the cylinder on which the sleeve is threaded. The blocking edges of the longitudinal openings of the sleeves are then placed at the junction between the wall and the cylinder.
• each cylinder 7a1 -8a1 has a section
• each protective sleeve 201 -202 has an open circular section at C. This ensures optimum contact with the strip during application, without stopping, and prevents the strip from tearing. It is then possible to apply the strip very quickly, without fear that the free edges of the rear and lower walls will melt, and without the risk of tearing the strip thanks to the rounded shape of the sleeves.
• this structure of the sleeves also allows the applicator to be adapted to the viscosity of the coating used.
• the protective sleeves 201 -202 have a thickness such that, when they are inserted around the cylinders of the free end of the rear wall and of the lower wall, they are spaced apart by a height. entry slot such that, in use, the strip can pass freely, but not the coating stored in the tank.
• a jointing tape application kit between two plasterboards comprising a tape applicator and a plurality of protective sleeves of different thicknesses to allow height adjustment of the entry slot. depending on the viscosity of the plaster to be used.
• the invention it is possible to very easily adjust and adapt the height of the strip inlet and strip outlet slots, depending on the viscosity of the coating, and on the practice of the user in terms of coating flow.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Coating Apparatus (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=67262778

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Family Cites Families (9)

• 2019
  • 2019-05-29 EP EP19739671.6A patent/EP3976902B8/de active Active
  • 2019-05-29 WO PCT/FR2019/000087 patent/WO2020240099A1/fr not_active Ceased
  • 2019-05-31 US US17/608,503 patent/US20220228376A1/en not_active Abandoned
  • 2019-05-31 AU AU2019447729A patent/AU2019447729A1/en not_active Abandoned
  • 2019-05-31 DK DK19739671.6T patent/DK3976902T3/da active
  • 2019-05-31 PL PL19739671.6T patent/PL3976902T3/pl unknown
  • 2019-05-31 ES ES19739671T patent/ES2958766T3/es active Active

Also Published As

Similar Documents

Legal Events