US3653552A - Adhesive applicator - Google Patents

Adhesive applicator Download PDF

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Publication number
US3653552A
US3653552A US868538A US3653552DA US3653552A US 3653552 A US3653552 A US 3653552A US 868538 A US868538 A US 868538A US 3653552D A US3653552D A US 3653552DA US 3653552 A US3653552 A US 3653552A
Authority
US
United States
Prior art keywords
tube
rod
sleeve
valve
resinous material
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.)
Expired - Lifetime
Application number
US868538A
Other languages
English (en)
Inventor
Bernard Edwin Ash
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.)
STC PLC
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3653552A publication Critical patent/US3653552A/en
Assigned to STC PLC reassignment STC PLC ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/022—Melting the material to be shaped
    • 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
    • B05C17/00523—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 provided with means to heat the material
    • B05C17/00526—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 provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
    • B05C17/0053—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 provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • 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
    • B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
    • B05C7/04—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the work; the work being filled with liquid or other fluent material and emptied

Definitions

  • a device for dispensing liquid resinous material from solid rods includes a heated melting tube having a dispensing jet [52] U.S. Cl. 222/146 HE, 126/343 A, 219/230, with a valve at one end, and a tapered insert at the other end 228/53, 401/2 made of a material to which the resinous material will not ad- [51] int. Cl. ..B05c 5/02 here.
  • the drive feeding the rod into the insert is disengaged [58] Field of Search ..222/ 146; 18/30 FM, 30 F8, 30 OH, when the valve is closed and reengaged when the valve is 18/30 QZ', 219/230, 231, 421; 228/52, 53; 401/1, 2; opened.
  • the arrangement prevents pressure build up when the 126/3435 R, 343 A device is stopped and limits back flow of molten material along the rod.
  • the supply rod cannot be a tight fit in the entry end of the apparatus, which means that there is a tendency for molten material to creep back along the sides of the rod and escape from the apparatus.
  • This can be overcome by keeping the entry end of the apparatus below the melting temperature of the material, but in this case there is a tendency for the molten material to adhere to the inside of the entry end when the apparatus is stopped. If the resinous material readily adheres to metal aconsiderable force will be required to restart delivery, which means that there will be a variation in the rate of delivery.
  • the present invention provides an apparatus for dispensing resinous material in liquid form when the resinous material is supplied in the form of a continuous rod.
  • the apparatus includes a melting tube, attached to one end of which is a dispensing jet containing a valve.
  • the other end of the tube includes a sleeve insert having a portion with substantially the same internal diameter as the external diameterof the rod, and a portion with a tapered internal section, the taper increasing in section towards the jet end of the melting tube.
  • the sleeve insert is made of a material to which the resinous material will not adhere.
  • the rod is fed into the melting tube at the sleeve insert end by a drive which is disengaged from the rod when the valve is closed and re-engaged when the valve is opened.
  • An electrical heater extends over the melting tube, except the portion containing the sleeve insert, the heater maintaining the jet end of the melting tube at the dispensing temperature of the resinous material, while the portion of the tube adjacent to the sleeve insert is at the melting point of the resinous material.
  • the tube assembly is mounted at the sleeve insert end in a large heat-conducting mass.
  • FIGURE shows the dispensing apparatus mainly in cross section.
  • the adhesive rod 1 of a suitable resinous material is fed into the apparatus by means of two friction-drive wheels 2, which are driven at constant but variable rates.
  • the rod melts in the melting tube 3, the molten material being shown generally as 9, as the tube 3 is heated by the electrical heater 4.
  • At the inlet end of the tube 3 there is a polytetrafluoroethylene sleeve insert 5 having a tapered portion as shown as 8, the whole tube assembly being mounted in a large metallic mass 6 as shown.
  • the sliding valve 7 cuts off the flow of adhesive from the jet 10 when the apparatus is stopped, jet 10 being heated by conduction from the tube 3 in order to prevent the adhesive solidifying inside it.
  • the melting tube 3 is heated by the heater 4 in such a manner that its temperature varies from the required application temperature at the jet end, to just above themelting point of the adhesive at the portion of the tube adjacent to the sleeve insert 5.
  • the thickness of the tube 3 around the sleeve insert 5 is kept to a minimum in order that there is a considera ble temperature gradient over the tapered section 8.
  • This tapered section 8 produces conditions whereby the molten material runs back along the rod 1 into a progressively narrowing gap, the sides of which become progressively colder as the rod 1 feeds forward, which causes the molten material to freeze against the rod 1.
  • the insert 5 is made of polytetrafluoroethylene which is a material that the adhesive will not adhere to, so that the rod cannot become adhered to the tube entry when the apparatus is stopped, therefore the rod can be easily moved forward when the apparatus is restarted.
  • the sold material in the entry of tube 3 melts and tends to force the supplying rod outwards due to the pressure building up within the tube 3.
  • the taper 8 in insert 5 is slight, and as polytetrafluoroethylene is very flexible, the rod will not be restricted from moving outwards by the taper 8 or the insert 5. If the friction-drive wheels 2 are released from the rod when the apparatus is stopped, the rod 1 will be free to move outwards. If the heater 4 is now switched off the rod 1 will be drawn into the tube 3, by the contraction of the solidifying matter, which minimizes the risk of producing voids in the material in the tube 3.
  • the apparatus is designed such that when it is switched off valve 7 shuts, and at the same time the friction-drive wheels 2 are automatically released from the rod 1, a suitable connecting mechanism being indicated by dashed line 11. The reverse procedure taking place when the apparatus is restarted.
  • the insert 5 may alternatively be made of material to which the adhesive will not adhere.
  • An apparatus for dispensing resinous material in liquid form when the resinous material is supplied in the form of a continuous rod comprising a melting tube having a passageway for said rod, a dispensing jet attached to one end of said tube, a valve controlling liquid flow through said jet, a sleeve insert having substantially the full length enclosed within the other end of the tube, said sleeve having an outer end portion of said passageway with substantially the same internal diameter as the external diameter of the rod and an inner portion with a tapered internal section enclosed within said tube, the taper increasing in section towards the jet end of the melting tube, the sleeve insert being made of a material relatively non-adherent to the resinous material at temperatures cooler than at said jet end, means for feeding the rod into the melting tube at the sleeve insert end, said means being disengaged from the rod when the valve is closed and reengaged when the valve is opened, an electrical heater extending over the melting tube except the portion containing the sleeve insert, said passageway within the electrical
  • the means feeding the rod into the melting tube comprises a pair of frictiondrive wheels and including means for automatically disengag ing said drive wheels from said rod when said valve is closed and reengaging said wheels when said valve is opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Coating Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Pyridine Compounds (AREA)
US868538A 1968-11-07 1969-10-22 Adhesive applicator Expired - Lifetime US3653552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52772/68A GB1175650A (en) 1968-11-07 1968-11-07 Adhesive Applicator

Publications (1)

Publication Number Publication Date
US3653552A true US3653552A (en) 1972-04-04

Family

ID=10465227

Family Applications (1)

Application Number Title Priority Date Filing Date
US868538A Expired - Lifetime US3653552A (en) 1968-11-07 1969-10-22 Adhesive applicator

Country Status (13)

Country Link
US (1) US3653552A (sv)
JP (1) JPS5010268B1 (sv)
AT (1) AT304735B (sv)
BE (1) BE741391A (sv)
CH (1) CH498659A (sv)
DE (1) DE1955452A1 (sv)
ES (1) ES373252A1 (sv)
FI (1) FI51066C (sv)
FR (1) FR2022800A1 (sv)
GB (1) GB1175650A (sv)
NL (1) NL6916808A (sv)
NO (1) NO127606B (sv)
SE (1) SE343237B (sv)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810563A (en) * 1972-07-14 1974-05-14 Mers H Plastic melting and feeding machine
US4613062A (en) * 1984-04-17 1986-09-23 Continental Can Company, Inc. Hot melt material dispenser
US4804110A (en) * 1986-01-08 1989-02-14 Charles R. Sperry Apparatus, method and article for applying a melted adhesive
US4953755A (en) * 1988-10-03 1990-09-04 Minnesota Mining And Manufacturing Company Automated thermoplastic dispensing device
US5027976A (en) * 1989-10-10 1991-07-02 Nordson Corporation Multi-orifice T-bar nozzle
US20030165793A1 (en) * 2001-10-27 2003-09-04 Dan Yobel System for dispensing viscous materials
US20050170313A1 (en) * 2002-03-01 2005-08-04 Pitz Richard J. System for dispensing viscous materials
US20060032346A1 (en) * 2002-03-25 2006-02-16 Sankyo Seiki Mfg. Co., Ltd. Curved surface cutting processing method
US20070049886A1 (en) * 2005-08-31 2007-03-01 Kimberly-Clark Worldwide, Inc. Absorbent web with improved integrity and methods for making the same
US20080097311A1 (en) * 2006-05-17 2008-04-24 Bruno Dacquay Temperature Release Mechanism For Injection Device
CN109834014A (zh) * 2017-11-28 2019-06-04 深圳市腾盛工业设备有限公司 应用于点胶设备的点胶阀、点胶设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032046A (en) * 1976-11-01 1977-06-28 Usm Corporation Apparatus for feeding glue to a hot melt glue dispensing appliance
US4474311A (en) * 1981-07-31 1984-10-02 Nordson Corporation Thermoplastic melting and dispensing apparatus
GB8334653D0 (en) * 1983-12-30 1984-02-08 Dynacast Int Ltd Injection moulding and casting method
EP0225943A1 (en) * 1985-12-03 1987-06-24 Clarence H. Drader Apparatus for and process of welding thermoplastics material
FR2646108B1 (fr) * 1989-04-21 1994-01-21 Puy Creation Philippe Distributeur de colle et application a un dispositif de collage
DE9305421U1 (de) * 1993-04-09 1993-06-17 Fagus-Grecon Greten GmbH & Co KG, 3220 Alfeld Vorrichtung zum Auftragen von Leim

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972670A (en) * 1959-09-04 1961-02-21 United Shoe Machinery Corp Cement handling apparatus
US3285475A (en) * 1965-02-08 1966-11-15 United Shoe Machinery Corp Cement extruders
US3337093A (en) * 1964-04-06 1967-08-22 United Shoe Machinery Corp Electrically heated cement extruders
US3399665A (en) * 1967-05-24 1968-09-03 United Shoe Machinery Corp Apparatus for melting and dispensing thermoplastic material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972670A (en) * 1959-09-04 1961-02-21 United Shoe Machinery Corp Cement handling apparatus
US3337093A (en) * 1964-04-06 1967-08-22 United Shoe Machinery Corp Electrically heated cement extruders
US3285475A (en) * 1965-02-08 1966-11-15 United Shoe Machinery Corp Cement extruders
US3399665A (en) * 1967-05-24 1968-09-03 United Shoe Machinery Corp Apparatus for melting and dispensing thermoplastic material

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810563A (en) * 1972-07-14 1974-05-14 Mers H Plastic melting and feeding machine
US4613062A (en) * 1984-04-17 1986-09-23 Continental Can Company, Inc. Hot melt material dispenser
US4804110A (en) * 1986-01-08 1989-02-14 Charles R. Sperry Apparatus, method and article for applying a melted adhesive
US4953755A (en) * 1988-10-03 1990-09-04 Minnesota Mining And Manufacturing Company Automated thermoplastic dispensing device
US5027976A (en) * 1989-10-10 1991-07-02 Nordson Corporation Multi-orifice T-bar nozzle
US20030165793A1 (en) * 2001-10-27 2003-09-04 Dan Yobel System for dispensing viscous materials
US20050170313A1 (en) * 2002-03-01 2005-08-04 Pitz Richard J. System for dispensing viscous materials
US7086861B2 (en) * 2002-03-01 2006-08-08 Pitz Richard J System for dispensing viscous materials
US20060032346A1 (en) * 2002-03-25 2006-02-16 Sankyo Seiki Mfg. Co., Ltd. Curved surface cutting processing method
US20070049886A1 (en) * 2005-08-31 2007-03-01 Kimberly-Clark Worldwide, Inc. Absorbent web with improved integrity and methods for making the same
US20080097311A1 (en) * 2006-05-17 2008-04-24 Bruno Dacquay Temperature Release Mechanism For Injection Device
US7762981B2 (en) * 2006-05-17 2010-07-27 Alcon Research, Ltd. Temperature release mechanism for injection device
CN109834014A (zh) * 2017-11-28 2019-06-04 深圳市腾盛工业设备有限公司 应用于点胶设备的点胶阀、点胶设备
CN109834014B (zh) * 2017-11-28 2021-01-08 深圳市腾盛精密装备股份有限公司 应用于点胶设备的点胶阀、点胶设备

Also Published As

Publication number Publication date
NO127606B (sv) 1973-07-23
SE343237B (sv) 1972-03-06
FI51066C (sv) 1976-10-11
NL6916808A (sv) 1970-05-11
FR2022800A1 (sv) 1970-08-07
AT304735B (de) 1973-01-25
FI51066B (sv) 1976-06-30
GB1175650A (en) 1969-12-23
CH498659A (de) 1970-11-15
ES373252A1 (es) 1971-12-16
JPS5010268B1 (sv) 1975-04-19
BE741391A (sv) 1970-05-08
DE1955452A1 (de) 1970-06-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: STC PLC,ENGLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.;REEL/FRAME:004761/0721

Effective date: 19870423

Owner name: STC PLC, 10 MALTRAVERS STREET, LONDON, WC2R 3HA, E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.;REEL/FRAME:004761/0721

Effective date: 19870423