EP0346643A2 - Dispositif pour dissoudre superficiellement la couche de colle de revêtements de mur et de sol - Google Patents

Dispositif pour dissoudre superficiellement la couche de colle de revêtements de mur et de sol Download PDF

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Publication number
EP0346643A2
EP0346643A2 EP89109098A EP89109098A EP0346643A2 EP 0346643 A2 EP0346643 A2 EP 0346643A2 EP 89109098 A EP89109098 A EP 89109098A EP 89109098 A EP89109098 A EP 89109098A EP 0346643 A2 EP0346643 A2 EP 0346643A2
Authority
EP
European Patent Office
Prior art keywords
base plate
nozzle
valve
pressure
nozzles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89109098A
Other languages
German (de)
English (en)
Other versions
EP0346643A3 (fr
Inventor
Gerhard Gebauer
Gerhard Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
J Wagner GmbH
Original Assignee
J Wagner GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by J Wagner GmbH filed Critical J Wagner GmbH
Publication of EP0346643A2 publication Critical patent/EP0346643A2/fr
Publication of EP0346643A3 publication Critical patent/EP0346643A3/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/006—Arrangements for removing of previously fixed floor coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C7/00—Paperhanging
    • B44C7/02—Machines, apparatus, tools or accessories therefor
    • B44C7/027—Machines, apparatus, tools or accessories for removing wall paper

Definitions

  • the invention relates to a device for detaching the adhesive layer of firmly adhered wall and floor coverings, for example wallpaper and carpets.
  • the object of the present invention is therefore to provide a device with the aid of which it is possible to carry out the injection method mentioned quickly, easily, effectively and economically.
  • the solution to this problem results from the characterizing features of patent claim 1.
  • the device of FIG. 1 has a base plate designated by 10 in the form of a circular disk, in the lower surface of which six nozzle blocks 11 are embedded; 1 shows only one of the two nozzle blocks 11 lying in the sectional plane.
  • the nozzle sticks 11 are displaceable in the base plate 10 perpendicular to the plane of the plate and are loaded into their extended position by disc springs 12, a snap ring 13 limiting the extension movement.
  • An O-ring 14 provides a seal between the nozzle assembly 11 and the bore of the baseplate 10.
  • Each nozzle assembly 11 has a nozzle 15 and an annular ring 16 concentrically surrounding it, the edge of the ring rim 16 protrudes slightly beyond the nozzle 15.
  • a valve consisting of a spring 17 and a ball 18 is accommodated within the nozzle assembly 11, the spring loading the valve ball in the closing direction, thereby blocking the flow to the nozzle 15.
  • the two inlet lines 25 and 26 go from a common line 27 which is connected to an outlet line 28 of a chamber 29.
  • the chamber 29 also has an inlet opening 30 which is displaceable by a piston 32 sliding in the chamber 29 and loaded by a spring 31.
  • the piston 32 is seated on a piston rod 33, the free end 33a of which protrudes laterally from the base plate 10.
  • the base plate 10 On its upper side, the base plate 10 is provided with vertically projecting guide bolts 34, on which a pressure plate 35 slides.
  • the pressure plate 35 is essentially congruent with the base plate 10 and is loaded by the helical springs 36 surrounding the guide bolts 34 in the direction away from the base plate 10, with snap rings 37 limiting the movement of the pressure plate 35.
  • the pretensioning of the spring 36 can be adjusted by means of a central centering pin 38 with a screw nut 39 which is fastened to the base plate 10 and passes through the pressure plate 35.
  • Two handles 39 protrude laterally from the pressure plate 35, and in the area of one of the handles 39 an actuating finger 40 with roller 41 protrudes from the pressure plate 35, such that the roller 40 has the free end when the pressure plate 35 is pressed in 33a of the piston rod 33 comes into contact.
  • 42 designates a high-pressure hose which leads from a pressure medium generator and is connected to the inlet opening 30 of the chamber 29.
  • the device works as follows. In the rest position, the nozzle assemblies 11 are fully extended from the base plate 10, and the pressure plate 35 bears against the stops 37, ie it takes its greatest possible distance from the base plate 10. The nozzle valves 17, 18 and the nozzle pre-valve 19, 20 are closed and the piston 32 covers the inlet 30, that is to say closes off the device against the supply of liquid. To remove a wallpaper, for example, the operator now grips the device by the two handles 39 and presses the base plate 10 against the surface of the wallpaper. First, the nozzle blocks 11 are pressed into the base plate because the plate springs 12 are designed to be weaker than the springs 36, which support the pressure plate 35.
  • each nozzle block 11 Due to the fact that each of the six nozzle blocks 11 is cushioned separately, each nozzle block 11 has a snug fit on the wallpaper surface, even if this surface is not completely flat or the operator does not press the device exactly perpendicular to the wall surface. As soon as at least one of the nozzle assemblies is fully retracted and thus its plate spring 12 is pressed flat or a stop (not shown) is reached, the force of the springs 36 is further pressed, ie the pressure plate 35 is displaced in the direction of the base plate 10.
  • the actuating finger 40 which is connected in one piece to the pressure plate 35, thus moves in the same direction, the roller 41 coming into contact with the end 33a of the piston rod 33 and pressing it a predetermined distance into the base plate 10; the piston rod 33 moves to the right on the drawing. However, the piston 32 thereby clears the inlet opening 30. From the high-pressure hose 42, liquid passes through the opening 30 into the chamber 29 and from there through the line 28 into the line 29 and finally through the line 25 into the chamber 22 and through the line 26 into the chamber 22 ′ behind the differential piston 24 Because this rear surface of differential piston 24 supplied by line 26 is larger than its surface adjoining chamber 22, piston 24 moves to the left.
  • the piston 24 initially covers and thus closes the opening 25 and then sets the liquid in the chamber 22 under increasing pressure, namely until the pressure of the liquid in the chamber 22 can overcome the force of the valve spring 19 and thus the nozzle valve 19, 20 opens.
  • the piston 24 moving further to the left thus presses the liquid in the chamber 22 into the six radially outgoing lines 21, via which the liquid enters the interior of the nozzle assemblies 11, there opens the valves 17, 18 and through the nozzles 15 the surface of the wallpaper is sprayed.
  • the spraying out of the liquid results in a drop in pressure, which leads to the nozzle valves 17, 18 and the nozzle pilot valve 19, 20 closing again. There can be no dripping at the nozzles.
  • both the nozzle sticks 35 return into their position with the stops 37, the latter causing the roller 41 of the actuating finger 40 to release the piston rod 33, which in turn causes the piston 32 to Inlet opening 30 closes and the spring 23 returns the differential piston 24 to the right in its original position.
  • the device is thus ready for a new start to another area of the wallpaper surface.
  • FIG. 1 shows the time that the nozzle blocks 11 and pressure plate 35 have already been pressed in, the piston 32 has already opened the inlet opening 30 and the differential piston 24 has already been shifted to the left so far that it Line 25 closes.
  • the operation of the device is such that the liquid is sprayed out of the nozzles 15 under such high pressure that it penetrates the wallpaper and reaches the adhesive layer underneath.
  • a suitable pressure in the storage container
  • a dissolving liquid is used as the liquid, which is suitable for dissolving the adhesive used to stick the wallpaper.
  • the ring wreaths 16 ensure that the spray jet is not deflected. Practical tests have shown that the adhesive layer is dissolved after about 30 minutes to one hour in such a way that the wallpaper can be easily removed.
  • the advantage of the presence of the differential piston 24 is that the pressure of the pressure medium generator can be lower, for example by 50%, than is required for the injection, and that the amount of injection liquid is precisely defined.
  • the valves 19, 20 and 17, 18 ensure that a predetermined amount of liquid is always expelled from the nozzles and that, as already mentioned, dripping at the nozzles cannot occur.
  • the number of nozzle blocks 11 in the base plate 10 can also be chosen as desired, and the base plate and pressure plate can also be square, for example square. It is essential that the individual cushioning of the nozzle assemblies ensures that they are in perfect contact with the surface to be machined and that after the nozzle assemblies have reached the surface, the liquid is automatically ejected in a predetermined amount.
  • the device is divided into two separate components, one of which (FIG. 4A) is in the vicinity of the solvent pump, while the other, namely the actual base plate (FIG. 4B) is guided by the operator by hand.
  • the supply body 10a In the part near the pump, hereinafter referred to as the supply body 10a, the supply lines (28, 28a) from the pump and back into the solvent container are arranged, as well as the main valve (31, 32, 33), the differential piston 24 (pressure intensifier) and that Nozzle pre-valve (19, 20).
  • the necessary supply lines within this component 10a are made through bores, the bore ends of which are closed pressure-tight.
  • the magnetic head is denoted by 50, the electrical feed line by 51.
  • the magnetic head 50 is actuated via an electrical switch, not shown, arranged near the pump, which is followed by an adjustable timer (timer), so that the firing times are via the timer circuit are variable.
  • a pressure-resistant hose 52 is attached to the outlet of the nozzle pre-valve 19, 20 of the component 10a and establishes the connection with the actual base plate 10b shown in FIG. 4B.
  • the actual base plate 10b is shown in FIG. 4B and corresponds to the nozzle-side part of the base plate 10 from FIG. 1.
  • a mechanically actuable valve 53 is provided, the actuating element of which is designated 54.
  • the hose 52 leading from the nozzle pre-valve 19, 20 is fastened.
  • the outlet of the valve 53 is connected to the channels 21 leading to the nozzles 11.
  • the handles 40 are attached directly to the base plate 10b.
  • FIG. 5 shows a practical embodiment of the valve 53, which is only indicated schematically in FIG. 4B.
  • the valve is seated in a bush 55 and has a valve body 56 which is loaded in the closing direction by a spring 57.
  • 58 is the valve inlet to which hose 52 is connected.
  • the valve body 56 has a valve stem 60, the actuating rod 54 being loosely inserted through a transverse bore in the stem 60 and being articulated on a nose 61 protruding from the base plate 10b.
  • the valve body 56 By pulling up the actuating element 54 (in the direction of the arrow), the valve body 56 can be raised against the force of the spring 57 and the valve can thus be opened.
  • the base plate 10a has a lower weight than the base plate of FIG. 1, which facilitates handling by the operator.
  • the base plate 10a can remain pressed against the wall at all times, the sleeves surrounding the nozzles having to be designed in such a way that they allow sliding in the pressed state even on somewhat rough walls. If necessary, this can be achieved by reworking (smoothing) the front edge of the sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Coating Apparatus (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP19890109098 1988-06-14 1989-05-19 Dispositif pour dissoudre superficiellement la couche de colle de revêtements de mur et de sol Withdrawn EP0346643A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883820256 DE3820256A1 (de) 1988-06-14 1988-06-14 Vorrichtung zum anloesen der kleberschicht festgeklebter wand- und bodenbelaege
DE3820256 1988-06-14

Publications (2)

Publication Number Publication Date
EP0346643A2 true EP0346643A2 (fr) 1989-12-20
EP0346643A3 EP0346643A3 (fr) 1990-09-05

Family

ID=6356539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890109098 Withdrawn EP0346643A3 (fr) 1988-06-14 1989-05-19 Dispositif pour dissoudre superficiellement la couche de colle de revêtements de mur et de sol

Country Status (2)

Country Link
EP (1) EP0346643A3 (fr)
DE (1) DE3820256A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6692612B1 (en) 1999-04-16 2004-02-17 Michael Spratling Adhesive removal compositions and methods of using same
US11950677B2 (en) 2019-02-28 2024-04-09 L'oreal Devices and methods for electrostatic application of cosmetics

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219446B (zh) * 2019-05-16 2021-02-02 广东博智林机器人有限公司 自动铺砖方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552611B1 (de) * 1975-11-24 1977-05-12 Peter Hutterer Vorrichtung zum entfernen alter schmutz-, leimfarben- und binderfarbenschichten an decken und waenden, sowie zum losloesen von tapeten
DE8701857U1 (de) * 1987-02-07 1987-03-26 Salz, Hans, 5200 Siegburg Befeuchtungsgerät zum Einweichen alter Tapeten
EP0272559A1 (fr) * 1986-12-19 1988-06-29 Henkel Kommanditgesellschaft auf Aktien Procédé pour décoller un revêtement collé et dispositif pour réaliser le procédé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552611B1 (de) * 1975-11-24 1977-05-12 Peter Hutterer Vorrichtung zum entfernen alter schmutz-, leimfarben- und binderfarbenschichten an decken und waenden, sowie zum losloesen von tapeten
EP0272559A1 (fr) * 1986-12-19 1988-06-29 Henkel Kommanditgesellschaft auf Aktien Procédé pour décoller un revêtement collé et dispositif pour réaliser le procédé
DE8701857U1 (de) * 1987-02-07 1987-03-26 Salz, Hans, 5200 Siegburg Befeuchtungsgerät zum Einweichen alter Tapeten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6692612B1 (en) 1999-04-16 2004-02-17 Michael Spratling Adhesive removal compositions and methods of using same
US11950677B2 (en) 2019-02-28 2024-04-09 L'oreal Devices and methods for electrostatic application of cosmetics

Also Published As

Publication number Publication date
EP0346643A3 (fr) 1990-09-05
DE3820256A1 (de) 1989-12-28

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