EP0863807A1 - Appareil d'injection d'un liquide dans une piece de bois - Google Patents
Appareil d'injection d'un liquide dans une piece de boisInfo
- Publication number
- EP0863807A1 EP0863807A1 EP96927495A EP96927495A EP0863807A1 EP 0863807 A1 EP0863807 A1 EP 0863807A1 EP 96927495 A EP96927495 A EP 96927495A EP 96927495 A EP96927495 A EP 96927495A EP 0863807 A1 EP0863807 A1 EP 0863807A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow shaft
- drill bit
- drill
- liquid
- piece
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 239000002023 wood Substances 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
- B27K3/10—Apparatus
- B27K3/105—Injection apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00503—Details of the outlet element
- B05C17/00516—Shape or geometry of the outlet orifice or the outlet element
Definitions
- the subject of the present invention is an apparatus for injecting a liquid under pressure into a piece of wood, comprising a drill with a drill bit, and a supply device allowing the liquid to penetrate into the wall of a drilled hole. by the said wick, while the latter is engaged in the hole.
- a drill which can be a hand drill or carried by a mobile support, is equipped with a drill bit which has a channel along its axis.
- a connection system generally placed in front of the drill chuck, allows a pressurized liquid, for example a disinfectant or a protection liquid against wood parasites, to penetrate and flow into the central channel of the drill bit. .
- a pressurized liquid for example a disinfectant or a protection liquid against wood parasites
- the object of the present invention is to remedy these drawbacks by proposing an injection device which uses conventional wicks and the sealing of which is perfectly ensured.
- the invention relates to an apparatus for injecting a liquid under pressure into a piece of wood, comprising a drill with a drill bit, and a supply device making it possible to make the liquid penetrate into the wall of a hole drilled by said drill bit, while the latter is engaged in the hole, characterized in that the feed device comprises, adjusted on the drill bit, a hollow shaft, one end of which is fixed to the mandrel of the drill, and which carries a fixed connector connected to a liquid supply source, and a sealing cone fixed to the other end of the hollow shaft, this sealing cone being shaped so that its end opposite the hollow shaft s press on the piece of wood at the entrance of the hole at the time of injection, the liquid passing through channels passing through the hollow shaft, and through the wick's propeller, to reach the wall of the hole.
- the hollow shaft is fixed to a clamping part forming part of the drill chuck, a clamp comprising a piece of elastic material being engaged on the drill bit and in the clamping piece of in order to ensure the attachment of the drill bit to the mandrel, the sealing of the rear part can be ensured by an O'ring seal.
- the connector can be mounted on the hollow shaft by rolling bearings and have a connected inlet duct to a liquid supply pipe, and an annular chamber surrounding the part of the hollow shaft which is provided with supply passages, this chamber being sealed by annular seals.
- the device may include a set of hollow shafts adapted to different wick diameters and attaching to the same clamping piece, each shaft being provided with its connector, and a multiple set of clamping cones adapted to the different wick diameters and having different lengths for each diameter.
- FIG. 1 is a view in longitudinal section along the axis of the drill chuck also illustrating the feed device
- Figures 2 and 3 are views respectively in elevation and in section, on a larger scale, of an example of clamping means in the form of an elastic clamp.
- FIG. 1 the mandrel 1 of a drill, which can be a portable drill, hand, or a drill mounted on a fixed or mobile support, guided on this support for example by a system of slides.
- the coupling sleeve 3, engaged on a protruding stud 2 of the mandrel, has an external thread on which a clamping piece 4 is screwed, intended to tighten and center a clamp for fixing a drill bit 5.
- a clamping piece 4 is screwed, intended to tighten and center a clamp for fixing a drill bit 5.
- the clamping part 4 has an internal bearing 6, bored to the diameter of an external bearing of the coupling part 3, a conical part 7 extending in front of the bore 6, and an end part 8 cylindrical, tapped vs bored so as to receive the rear end of a hollow shaft 9 which constitutes the central part of the device described.
- This hollow shaft will preferably be made of hardened steel. It has between the thread which connects it to the clamping piece 4 and another thread 10 situated at its front end, a cylindrical surface 11 machined with precision so as to receive rolling bearings 12 schematically represented in FIG. 1.
- the the bore of the hollow shaft 9 has a rear part 13a adjusted to slip relative to the diameter of the cylindrical part of the wick 5 and a front part 13b of a slightly larger diameter. This part 13b extends to the end of the shaft 9, which has, as already mentioned, the thread 10.
- the thread 10 is used for fixing a sealing cone 14, the internal diameter of which is equal to that of the bore 13a and therefore tightly surrounds the drill bit 5.
- the length of the part 14 can vary as required.
- a plurality of cones 14 of different lengths can be provided for each wick diameter.
- the cone 14 can be made of steel, plastic or any other material. However, it is preferable to choose a material allowing the realization of a reusable cone rather than disposable after a single use.
- the device for feeding the device described is completed by the connector 15 which consists of two bearing support discs 16 and an intermediate sleeve 17 engaged on prominent parts of the supports 16.
- the discs 16 are screwed into the sleeve intermediate 17 by means of screws 18.
- a radial duct 19 connects the sleeve 17 to a supply pipe (not shown). It opens into an annular chamber 20 which surrounds the shaft 9 at the location of its radial holes. Seals 21 and 22 are provided between the parts 16 and 17 on the one hand, 16 and 9 on the other hand.
- the great advantage of the arrangement described is that it allows the use, for injection, of a standard drill bit, the diameter and length of the helical part of which can be chosen as desired.
- This wick is engaged in the sealing cone 14 and in the hollow shaft 9, its rear end being fixed to the mandrel 1 by the clamp shown in Figures 2 and 3 or by any other suitable clamping means.
- This clamp is a part 24 of generally frustoconical shape whose external dimensions correspond to the internal dimensions of the frustoconical part 7 of the clamping part 4. It can have three metal parts 25 which form the clamping elements of the clamp. These parts are positioned so as to form a central passage 26 with a diameter adjusted to that of the wick 5. These metal parts are held by clamping in their position by the intermediate parts 27 made of elastic material, for example a relatively hard elastomer. or with springs.
- the piece 24 By clamping the piece 4 against the coupling piece 3, the piece 24 is compressed in the frustoconical space located in front of the coupling 3, which ensures the drive of the drill bit in rotation, as would a conventional clamp formed three jaws (chuck), the sealing of the rear part being ensured by an O 'ring seal 23 positioned in the groove of the part 3.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Drilling Tools (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Earth Drilling (AREA)
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH260995 | 1995-09-15 | ||
| CH02609/95A CH686768A5 (fr) | 1995-09-15 | 1995-09-15 | Appareil d'injection d'un liquide dans une pièce de bois. |
| CH2609/95 | 1995-09-15 | ||
| PCT/CH1996/000300 WO1997010084A1 (fr) | 1995-09-15 | 1996-09-03 | Appareil d'injection d'un liquide dans une piece de bois |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0863807A1 true EP0863807A1 (fr) | 1998-09-16 |
| EP0863807B1 EP0863807B1 (fr) | 1999-11-24 |
Family
ID=4237621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96927495A Expired - Lifetime EP0863807B1 (fr) | 1995-09-15 | 1996-09-03 | Appareil d'injection d'un liquide dans une piece de bois |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0863807B1 (fr) |
| AT (1) | ATE186866T1 (fr) |
| CH (1) | CH686768A5 (fr) |
| DE (1) | DE69605323T2 (fr) |
| WO (1) | WO1997010084A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5956894A (en) * | 1995-05-30 | 1999-09-28 | Eldridge; Geoffrey Richard | Tree injection apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1632508A (en) * | 1926-01-16 | 1927-06-14 | Schantz Carl | Method of preserving wood and the like |
| US4048353A (en) * | 1976-03-18 | 1977-09-13 | Canron, Inc. | Method of drilling and injecting perservative fluid into railway ties |
| IT8454160U1 (it) * | 1984-12-13 | 1986-06-13 | Edilchimica Italia S R L | Apparecchio per l'iniezione di liquidi disinfestanti e/o protettivi in strutture di legno ed altri materiali. |
-
1995
- 1995-09-15 CH CH02609/95A patent/CH686768A5/fr not_active IP Right Cessation
-
1996
- 1996-09-03 AT AT96927495T patent/ATE186866T1/de not_active IP Right Cessation
- 1996-09-03 DE DE69605323T patent/DE69605323T2/de not_active Expired - Fee Related
- 1996-09-03 EP EP96927495A patent/EP0863807B1/fr not_active Expired - Lifetime
- 1996-09-03 WO PCT/CH1996/000300 patent/WO1997010084A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9710084A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE186866T1 (de) | 1999-12-15 |
| DE69605323T2 (de) | 2000-07-27 |
| CH686768A5 (fr) | 1996-06-28 |
| WO1997010084A1 (fr) | 1997-03-20 |
| EP0863807B1 (fr) | 1999-11-24 |
| DE69605323D1 (de) | 1999-12-30 |
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