EP0289763A2 - Liquid glue applying device - Google Patents
Liquid glue applying device Download PDFInfo
- Publication number
- EP0289763A2 EP0289763A2 EP88104482A EP88104482A EP0289763A2 EP 0289763 A2 EP0289763 A2 EP 0289763A2 EP 88104482 A EP88104482 A EP 88104482A EP 88104482 A EP88104482 A EP 88104482A EP 0289763 A2 EP0289763 A2 EP 0289763A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- glue
- tank
- level
- reservoir
- supplying reservoir
- 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- Withdrawn
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Classifications
-
- 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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
Definitions
- This invention relates to a liquid glue applying device comprising a small tank which contains the glue and a roller dipped in the glue, and is connected to a glue-supplying reservoir, sensor means being provided which are responsive to the level of the glue in the tank and which control automatically the flow of the glue from the feeding reservoir to the tank, so as to maintain the level of the glue in the tank substantially constant.
- glue-applying devices are used, for example, in the packaging field, and particularly in the tobacco industry, for example, in the manufacture of cigarettes for glueing the strips connecting the filter tips to the cigarettes.
- the roller dipped in the glue within the tank may have the function of a pick-up roller which picks up the glue and transfers it to smearing members, such as rollers or sectors, which apply the glue onto the surfaces to be glued.
- the dipping roller may also act as a smearing roller and may apply the glue directly onto the surfaces to be glued.
- the tank having usually a very limited capacity, is connected to a glue-supplying reservoir which has a considerably greater capacity than said tank.
- sensor means responsive to the level of the glue cause an amount of glue to flow automatically from the supplying reservoir into the tank, such as to reinstate the optimum level.
- level-sensing means may be used, for example, capacitive sensing means.
- the tank in order to transfer liquid glue from the supplying reservoir to the tank so as to maintain a constant level in the latter, the tank is connected to the supplying reservoir by a pump which is controlled by level-sensing means associated with said tank.
- the supplying reservoir is sealingly closed and the transfer of the liquid glue from this reservoir to the tank is effected by the action of pressurized air in the reservoir above the level of the glue.
- the level-sensing means associated with the tank controls a solenoid valve for admitting pressurized air in the upper portion of the sealingly-closed supplying reservoir.
- the invention aims to improve a glue-applying device of the type described in the preamble, so as to automatically maintain the level of the liquid glue in the tank by constructionally simpler and more economical means yet affording a greater operational reliability.
- the reservoir which supplies the liquid glue is movable vertically and its lower portion is connected to the lower portion of the tank by means of a tubing which is at least partly flexible and/or articulated and in the communicating vessels fashion, whereby the same level will be maintained both in the tank and reservoir, while the level-sensing means associated with the tank controls a motivating means for the supplying reservoir so as to lift said reservoir depending upon the consumption of the glue and to maintain the level of the glue in the tank substantially constant.
- the numeral 1 indicates a small tank containing liquid glue, usually of not too high viscositu, wherein is dipped a roller 2 for picking and, optionally, smearing the glue.
- the tank 1 is connected at the bottom thereof, through a flexible hose 3, to the lower portion of a glue-supplying reservoir 4.
- the tank 1 has a relatively limited capacity, while the capacity of the reservoir 4 is appreciably larger than that of the tank 1.
- a stop valve 5 Interposed between the tank 1 and the flexible hose 3 is a stop valve 5.
- a further stop valve 6 is interposed between the reservoir 4 and the flexible hose 3.
- the tank 1 is arranged in a stationary position during the operation, while the reservoir 4 is mounted on a supporting member 7 which is guided to be movable in a vertical direction so as to permit a corresponding lifting and lowering movement of said tank 4.
- At least the lifting movement of the support 7, and therefore of the reservoir 4 may be caused by an actuator for example an electric motor 8, for example, by means of a pinion-and-rack drive 9-10.
- the motor 8 is controlled, through a control device 11, by a stationary sensor 12 which is responsive to the level of the liquid glue in the tank 1 and, preferably, also by a stationary sensor 13 which is responsive to the level of the liquid glue in the supplying reservoir 4.
- the supplying reservoir 4 may comprise therein a rotary stirrer 14 activated by a motor 15 mounted on said reservoir 4.
- the glue-supplying reservoir 4 may be provided with a suitable cover 16 to prevent any dirt or foreign matter from entering the reservoir, but the latter shall not be closed hermetically, that is the interior of the tank 4 shall be at the atmospheric pressure.
- the same level of liquid glue will be established in the supplying reservoir 4 and tank 1 on the basis of the principle of the communicating vessels.
- the reservoir When the reservoir is intially full, it will be lowered to a lower position wherein the level of the glue in the tank 1 is the optimum level for the operation of the glue-applying device.
- the level sensor 12 associated with the tank 1 is adjusted to this optimum level to be maintained substantially constant.
- the level-sensor 13 associated with the supplying reservoir 4 is, however, adjusted to a level slightly above said optimum level of the glue in the tank 1 but below the level whereat the glue would overflow from said tank 1.
- the level sensor 12 associated with the tank 1 activates the motor 8 so as to cause the lifting of the support 7 and, therefore, of the whole supplying reservoir 4 to such an extent as to reinstate the optimum level of the glue in the tank 1. Thereafter, these operations will be repeated automatically and intermittently until the glue in the reservoir 4 is exhausted and until the latter has been lifted up to a corresponding top end position.
- the reservoir 4 is then filled up again and lowered to its starting lower position.
- This lowering movement may be effected either manually or by said actuator or motor 8 that lifts said reservoir 4 when said actuator or motor 8 is of the reversible or double-acting type and, for example, is formed by a motor having two directions of rotation.
- the lifting and lowering movements of the glue-supplying reservoir 4 instead of being a vertical translatory movement, as illustrated, may be an angular movement, for example, if the supplying reservoir 4 is mounted on a vertically rocking arm.
- the level-sensors 12,13 associated with the tank 1 and supplying reservoir 4 may also be worked out in any suitable manner and may be constituted, for example, by capacitive sensors.
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- Coating Apparatus (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
- This invention relates to a liquid glue applying device comprising a small tank which contains the glue and a roller dipped in the glue, and is connected to a glue-supplying reservoir, sensor means being provided which are responsive to the level of the glue in the tank and which control automatically the flow of the glue from the feeding reservoir to the tank, so as to maintain the level of the glue in the tank substantially constant.
- These glue-applying devices are used, for example, in the packaging field, and particularly in the tobacco industry, for example, in the manufacture of cigarettes for glueing the strips connecting the filter tips to the cigarettes. The roller dipped in the glue within the tank may have the function of a pick-up roller which picks up the glue and transfers it to smearing members, such as rollers or sectors, which apply the glue onto the surfaces to be glued. In other known embodiments, the dipping roller may also act as a smearing roller and may apply the glue directly onto the surfaces to be glued.
- In order to obtain a reliable operation of a glue-applying device of the type mentioned above, it is necessary that the level of the liquid glue in the tank be maintained substantially constant.
- For this purpose, the tank, having usually a very limited capacity, is connected to a glue-supplying reservoir which has a considerably greater capacity than said tank. When the level of the glue in the tank falls to a given extent below the optimum level, sensor means responsive to the level of the glue cause an amount of glue to flow automatically from the supplying reservoir into the tank, such as to reinstate the optimum level.
- Any suitable level-sensing means may be used, for example, capacitive sensing means.
- In the heretofore-known glue-applying devices of the type mentioned above, in order to transfer liquid glue from the supplying reservoir to the tank so as to maintain a constant level in the latter, the tank is connected to the supplying reservoir by a pump which is controlled by level-sensing means associated with said tank. In another known embodiment, the supplying reservoir is sealingly closed and the transfer of the liquid glue from this reservoir to the tank is effected by the action of pressurized air in the reservoir above the level of the glue. For this purpose, the level-sensing means associated with the tank controls a solenoid valve for admitting pressurized air in the upper portion of the sealingly-closed supplying reservoir.
- The invention aims to improve a glue-applying device of the type described in the preamble, so as to automatically maintain the level of the liquid glue in the tank by constructionally simpler and more economical means yet affording a greater operational reliability.
- This problem is solved by the invention in that the reservoir which supplies the liquid glue is movable vertically and its lower portion is connected to the lower portion of the tank by means of a tubing which is at least partly flexible and/or articulated and in the communicating vessels fashion, whereby the same level will be maintained both in the tank and reservoir, while the level-sensing means associated with the tank controls a motivating means for the supplying reservoir so as to lift said reservoir depending upon the consumption of the glue and to maintain the level of the glue in the tank substantially constant.
- These and further characteristics of the invention and the advantages resulting therefrom will be apparent from the following description of a preferred embodiment of a glue-applying device which is diagrammatically shown in the vertical sectional view of the single Figure of the accompanying drawing.
- In the drawing, the numeral 1 indicates a small tank containing liquid glue, usually of not too high viscositu, wherein is dipped a
roller 2 for picking and, optionally, smearing the glue. - The tank 1 is connected at the bottom thereof, through a flexible hose 3, to the lower portion of a glue-supplying
reservoir 4. The tank 1 has a relatively limited capacity, while the capacity of thereservoir 4 is appreciably larger than that of the tank 1. Interposed between the tank 1 and the flexible hose 3 is a stop valve 5. A further stop valve 6 is interposed between thereservoir 4 and the flexible hose 3. These valves 5 and 6 permit the disassembling in case of maintenance operations. - The tank 1 is arranged in a stationary position during the operation, while the
reservoir 4 is mounted on a supportingmember 7 which is guided to be movable in a vertical direction so as to permit a corresponding lifting and lowering movement of saidtank 4. At least the lifting movement of thesupport 7, and therefore of thereservoir 4, may be caused by an actuator for example an electric motor 8, for example, by means of a pinion-and-rack drive 9-10. - The motor 8 is controlled, through a
control device 11, by astationary sensor 12 which is responsive to the level of the liquid glue in the tank 1 and, preferably, also by astationary sensor 13 which is responsive to the level of the liquid glue in the supplyingreservoir 4. - When the device is designed to apply glues whose components tend to dissociate and form deposits, such as, for example, polyvinyl-acetate glues, the supplying
reservoir 4 may comprise therein arotary stirrer 14 activated by amotor 15 mounted on saidreservoir 4. - The glue-supplying
reservoir 4 may be provided with asuitable cover 16 to prevent any dirt or foreign matter from entering the reservoir, but the latter shall not be closed hermetically, that is the interior of thetank 4 shall be at the atmospheric pressure. - When the valves 5 and 6 are open, the same level of liquid glue will be established in the supplying
reservoir 4 and tank 1 on the basis of the principle of the communicating vessels. When the reservoir is intially full, it will be lowered to a lower position wherein the level of the glue in the tank 1 is the optimum level for the operation of the glue-applying device. Thelevel sensor 12 associated with the tank 1 is adjusted to this optimum level to be maintained substantially constant. The level-sensor 13 associated with the supplyingreservoir 4 is, however, adjusted to a level slightly above said optimum level of the glue in the tank 1 but below the level whereat the glue would overflow from said tank 1. When, during the operation of the glue-applying device, the level of the glue in the tank 1 falls - due to the consumption of glue - a pre-established value below the optimum level, thelevel sensor 12 associated with the tank 1 activates the motor 8 so as to cause the lifting of thesupport 7 and, therefore, of the whole supplyingreservoir 4 to such an extent as to reinstate the optimum level of the glue in the tank 1. Thereafter, these operations will be repeated automatically and intermittently until the glue in thereservoir 4 is exhausted and until the latter has been lifted up to a corresponding top end position. Thereservoir 4 is then filled up again and lowered to its starting lower position. This lowering movement may be effected either manually or by said actuator or motor 8 that lifts saidreservoir 4 when said actuator or motor 8 is of the reversible or double-acting type and, for example, is formed by a motor having two directions of rotation. - In case of an obstruction in the flexible hose 3 and/or stop valves 5,6, upon the next lifting step of the supplying
reservoir 4, the level of the glue in thereservoir 4 is lifted together with the reservoir, as far as thesensor 13 associated with saidreservoir 4. When saidsensor 13 is responsive to the level of the glue in thereservoir 4, it stops - through the control device 11 - any further lifting of thereservoir 4. Thus, the risk is avoided that, after the removal of said obstruction, the level of the glue in the tank 1 rises beyond the upper edge of the tank 1 and the glue overflows therefrom. - Of course, the invention is not limited to the embodiment just described and illustrated, but broad changes and modifications, especially of constructional nature, may be made thereto. Thus, for example, the lifting and lowering movements of the glue-supplying
reservoir 4, instead of being a vertical translatory movement, as illustrated, may be an angular movement, for example, if the supplyingreservoir 4 is mounted on a vertically rocking arm. The level-sensors reservoir 4 may also be worked out in any suitable manner and may be constituted, for example, by capacitive sensors.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8712479A IT1208291B (en) | 1987-05-06 | 1987-05-06 | LIQUID GLUE APPLICATOR DEVICE |
IT1247987 | 1987-05-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0289763A2 true EP0289763A2 (en) | 1988-11-09 |
EP0289763A3 EP0289763A3 (en) | 1990-01-03 |
Family
ID=11140653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88104482A Withdrawn EP0289763A3 (en) | 1987-05-06 | 1988-03-21 | Liquid glue applying device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0289763A3 (en) |
IT (1) | IT1208291B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992000814A1 (en) * | 1990-07-05 | 1992-01-23 | Hormec Technic Sa | Fluid dose feeder particularly for glueing workpieces |
CN1086609C (en) * | 1998-04-17 | 2002-06-26 | 郭桂民 | Automatic PTFE emulsion supplying system for cigarette factory |
CN1086608C (en) * | 1998-04-17 | 2002-06-26 | 郭桂民 | Automatic adhesive-supplying system for cigarette packer |
EP1943181A2 (en) * | 2005-08-09 | 2008-07-16 | KEYES, Denis E. | Fluid dispensing apparatus |
CN104374434A (en) * | 2014-10-20 | 2015-02-25 | 常德芙蓉大亚化纤有限公司 | System and method for metering application amount of communicating vessel type cigarette plasticizer |
WO2017014705A1 (en) * | 2015-07-22 | 2017-01-26 | Bak Ambalaj San. Ve Tic. A. S. | Liquid coating materials auto supply system |
CN110732450A (en) * | 2019-10-24 | 2020-01-31 | 肖旭 | Glue smearing device for urheen barrels |
CN111605252A (en) * | 2020-05-19 | 2020-09-01 | 党少勇 | Corrugated paper single-side machine with controllable colloid liquid level based on communicating vessel principle |
EP2218516B2 (en) † | 2009-02-05 | 2021-06-02 | Hauni Maschinenbau GmbH | Application of glue to strips of material for the tobacco processing industry |
CN113877774A (en) * | 2021-11-22 | 2022-01-04 | 河南中烟工业有限责任公司 | Glue supply system for tipping paper of cigarette making machine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3511693A (en) * | 1967-05-01 | 1970-05-12 | Standard Register Co | Hot melt coating |
DE1648023A1 (en) * | 1967-10-09 | 1971-03-18 | Hauni Werke Koerber & Co Kg | Method and device for measuring a supply quantity of flowable glue for tobacco articles preferably produced on rod machines |
US3693585A (en) * | 1970-08-06 | 1972-09-26 | Georgia Pacific Corp | Roll coating apparatus for panel products |
US4241690A (en) * | 1979-04-04 | 1980-12-30 | Andrews Paper & Chemical Co., Inc. | Apparatus for coating moving webs |
DE3309731A1 (en) * | 1982-03-29 | 1983-10-06 | Johannes Zimmer | DEVICE FOR THE EVEN APPLICATION OF DETERMINABLE LIQUID AMOUNTS |
-
1987
- 1987-05-06 IT IT8712479A patent/IT1208291B/en active
-
1988
- 1988-03-21 EP EP88104482A patent/EP0289763A3/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3511693A (en) * | 1967-05-01 | 1970-05-12 | Standard Register Co | Hot melt coating |
DE1648023A1 (en) * | 1967-10-09 | 1971-03-18 | Hauni Werke Koerber & Co Kg | Method and device for measuring a supply quantity of flowable glue for tobacco articles preferably produced on rod machines |
US3693585A (en) * | 1970-08-06 | 1972-09-26 | Georgia Pacific Corp | Roll coating apparatus for panel products |
US4241690A (en) * | 1979-04-04 | 1980-12-30 | Andrews Paper & Chemical Co., Inc. | Apparatus for coating moving webs |
DE3309731A1 (en) * | 1982-03-29 | 1983-10-06 | Johannes Zimmer | DEVICE FOR THE EVEN APPLICATION OF DETERMINABLE LIQUID AMOUNTS |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992000814A1 (en) * | 1990-07-05 | 1992-01-23 | Hormec Technic Sa | Fluid dose feeder particularly for glueing workpieces |
US5316196A (en) * | 1990-07-05 | 1994-05-31 | Hormec Technic Sa | Fluid dispenser, in particular for gluing parts |
CN1086609C (en) * | 1998-04-17 | 2002-06-26 | 郭桂民 | Automatic PTFE emulsion supplying system for cigarette factory |
CN1086608C (en) * | 1998-04-17 | 2002-06-26 | 郭桂民 | Automatic adhesive-supplying system for cigarette packer |
US7753232B2 (en) | 2005-08-09 | 2010-07-13 | Keyes Denis E | Fluid dispensing apparatus |
EP1943181A4 (en) * | 2005-08-09 | 2009-11-25 | Denis E Keyes | Fluid dispensing apparatus |
EP1943181A2 (en) * | 2005-08-09 | 2008-07-16 | KEYES, Denis E. | Fluid dispensing apparatus |
EP2218516B2 (en) † | 2009-02-05 | 2021-06-02 | Hauni Maschinenbau GmbH | Application of glue to strips of material for the tobacco processing industry |
CN104374434A (en) * | 2014-10-20 | 2015-02-25 | 常德芙蓉大亚化纤有限公司 | System and method for metering application amount of communicating vessel type cigarette plasticizer |
CN104374434B (en) * | 2014-10-20 | 2018-01-26 | 常德芙蓉大亚化纤有限公司 | A kind of connected vessels type tobacco plasticizer applies consumption metering system and method |
WO2017014705A1 (en) * | 2015-07-22 | 2017-01-26 | Bak Ambalaj San. Ve Tic. A. S. | Liquid coating materials auto supply system |
CN110732450A (en) * | 2019-10-24 | 2020-01-31 | 肖旭 | Glue smearing device for urheen barrels |
CN111605252A (en) * | 2020-05-19 | 2020-09-01 | 党少勇 | Corrugated paper single-side machine with controllable colloid liquid level based on communicating vessel principle |
CN113877774A (en) * | 2021-11-22 | 2022-01-04 | 河南中烟工业有限责任公司 | Glue supply system for tipping paper of cigarette making machine |
Also Published As
Publication number | Publication date |
---|---|
EP0289763A3 (en) | 1990-01-03 |
IT8712479A0 (en) | 1987-05-06 |
IT1208291B (en) | 1989-06-12 |
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