CA1154949A - Device for melting and dispensing a thermoplastic adhesive - Google Patents
Device for melting and dispensing a thermoplastic adhesiveInfo
- Publication number
- CA1154949A CA1154949A CA000358456A CA358456A CA1154949A CA 1154949 A CA1154949 A CA 1154949A CA 000358456 A CA000358456 A CA 000358456A CA 358456 A CA358456 A CA 358456A CA 1154949 A CA1154949 A CA 1154949A
- Authority
- CA
- Canada
- Prior art keywords
- handle
- heating stage
- temperature heating
- adhesive
- higher temperature
- 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
Links
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Coating Apparatus (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
In a device for melting a thermoplastic adhesive and discharging measured amounts of the melted adhesive, the adhesive is melted within a housing having a handle with a piston-like grip. Two heating stages are provided in the housing, a higher temperature heating stage for use during operation and a lower temperature heating stage when use of the device is temporarily interrupted. A control member, such as a sensor, is provided in the handle so that when it is gripped by an operator, the sensor actuates the higher temperature heating stage. When the handle is released during a temporary interruption in use, the sensor switches from the higher temperature heating stage to the lower temperature heating stage.
In a device for melting a thermoplastic adhesive and discharging measured amounts of the melted adhesive, the adhesive is melted within a housing having a handle with a piston-like grip. Two heating stages are provided in the housing, a higher temperature heating stage for use during operation and a lower temperature heating stage when use of the device is temporarily interrupted. A control member, such as a sensor, is provided in the handle so that when it is gripped by an operator, the sensor actuates the higher temperature heating stage. When the handle is released during a temporary interruption in use, the sensor switches from the higher temperature heating stage to the lower temperature heating stage.
Description
'l'he pre~ent invention is d:irec-ted to a device for the melting and measure(l discharge of a thermoplas-tic adhesive where tne device includes a housing containing a handle with a least two controllable heating stages with:Ln the housing.
Thermopla~tic adhesives are being used increasingly in the fastening art. The advantages of such adhesives involve a rapid loading capaci-ty, lack of volatile solvents or solvents which are damaging to the health, with the further possibility of loosening a connection effected with the adhesive by heating ,the connection~ In addition to manufacturing processes for adhering parts, such as in the shoe industry, fusion adhesion can also be effected in assembling parts. In such procedures the problem occurs that there are relatively long interruptions between tne individual applications of the adhesive material.
If the aevice is turned off during such interruptions, then a relatively long start-up is required until the device again reaches its operating temperature.
:
In one known device, the time to heat up to the operational temperature is effected intwo stages. Initially, heating takes ~ place up to a certain temperature employing a higher temperature :
heating stage. Once the certain temperature is reached, then a switching operation occurs by means of a thermal circuit component and a lower temperature heating stage becomes operative .
providing only the melting heat required for the discharge of the adhesive.
.
If there is no discharge of the melted adhesive for a lon~ period of -time, then there is the danger that the device mignt overheat. To prevent overheating, the device must always be turned off when a long interruption in use is expected. The opeFator must decide each time whether the interrruption will be - 1 - .
~.~
~ IL5~L9'~
long or short so that, if necessary, the device can be turned off. Often, such a de-termination is difficult to make and involves additional work for -the operator. If the device is switched off more often than necessary, then unnecessary heating up periods result. If, on the other hand, the device is shut off too se]clom or not at all, there is the danger of overheating.
Therefore, it is the primary object of the present invention to provide a device for melting thermop]astic adhesive so that the device does not overheat or cool down too much during interruptions in its normal use~
In accordance with the present invention, the device includes control means in a pistol grip-like handle so that, when the handle is released from the hand of the operator, the higher temperature heating stage is cut out while a lower ; temperature heating stage becomes effective.
When using the device embodying the present invention, the operator is relieved of any decision whether to switch the device off during interruptions in its use. Another significant advantage is that the device does not cool off completely, rather ~20 it continues to operate at a lower temperature which is not damaging to the adhesive material or to the structural parts of the device. ~Consequently, the time required to return the device to the operating temperature is very short.
Basically, any circuit components, such as switches, pre~ssure members or the like, can be utilized for switching between the heating stages. Since such components usually have projecting parts and are subject to mechanical wear, it is -:
advantageous to position the sensor in the handle of the device 50 that it~reacts to the operator's touch. Accordingly, the ~30 switching process between heating stages is triggered when the
Thermopla~tic adhesives are being used increasingly in the fastening art. The advantages of such adhesives involve a rapid loading capaci-ty, lack of volatile solvents or solvents which are damaging to the health, with the further possibility of loosening a connection effected with the adhesive by heating ,the connection~ In addition to manufacturing processes for adhering parts, such as in the shoe industry, fusion adhesion can also be effected in assembling parts. In such procedures the problem occurs that there are relatively long interruptions between tne individual applications of the adhesive material.
If the aevice is turned off during such interruptions, then a relatively long start-up is required until the device again reaches its operating temperature.
:
In one known device, the time to heat up to the operational temperature is effected intwo stages. Initially, heating takes ~ place up to a certain temperature employing a higher temperature :
heating stage. Once the certain temperature is reached, then a switching operation occurs by means of a thermal circuit component and a lower temperature heating stage becomes operative .
providing only the melting heat required for the discharge of the adhesive.
.
If there is no discharge of the melted adhesive for a lon~ period of -time, then there is the danger that the device mignt overheat. To prevent overheating, the device must always be turned off when a long interruption in use is expected. The opeFator must decide each time whether the interrruption will be - 1 - .
~.~
~ IL5~L9'~
long or short so that, if necessary, the device can be turned off. Often, such a de-termination is difficult to make and involves additional work for -the operator. If the device is switched off more often than necessary, then unnecessary heating up periods result. If, on the other hand, the device is shut off too se]clom or not at all, there is the danger of overheating.
Therefore, it is the primary object of the present invention to provide a device for melting thermop]astic adhesive so that the device does not overheat or cool down too much during interruptions in its normal use~
In accordance with the present invention, the device includes control means in a pistol grip-like handle so that, when the handle is released from the hand of the operator, the higher temperature heating stage is cut out while a lower ; temperature heating stage becomes effective.
When using the device embodying the present invention, the operator is relieved of any decision whether to switch the device off during interruptions in its use. Another significant advantage is that the device does not cool off completely, rather ~20 it continues to operate at a lower temperature which is not damaging to the adhesive material or to the structural parts of the device. ~Consequently, the time required to return the device to the operating temperature is very short.
Basically, any circuit components, such as switches, pre~ssure members or the like, can be utilized for switching between the heating stages. Since such components usually have projecting parts and are subject to mechanical wear, it is -:
advantageous to position the sensor in the handle of the device 50 that it~reacts to the operator's touch. Accordingly, the ~30 switching process between heating stages is triggered when the
- 2 -:~ :
' ~15~
opera-tor's hand contac-ts -the handle and merely touches -two components. Such sensors are used at the present time in electronic games and, therefore, are very economical parts.
During normal working operations with a device for applying melted adhesives, often only very short interruptions are encountered, such as when a part must be placed in a certain position. When this is belng done, the device i.5 placed a~ide for a short period. To avoid a changeover between heating stages, it is practical if the switch from the higher temperature to lower temperature heating stage takes place with a time delay.
In this way unnecessary waiting time for reheating can be prevented.
The various features of novel-ty whlch characterize ~he invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which .
there are illustrated and described preferred embodiments of the illvention.
IN T~E DRAWING-_ The drawing is an elevational view of a device embodying the present invention.
In the drawing a device for melting a thermoplastic adhesive and for discharging measured amounts of the melted adhesive consists of a housing 1 with a handle 2 affording a pistol-li]ce grip. The handle 2 depends downwardly from one end of the housing 1. An electric supply line 3 is connected to the handle 2 as well as a pressure actuated trigger member 4. When ' the trigger member 4 is pressed inwardly, a body 5 of adhesive .
' ~15~
opera-tor's hand contac-ts -the handle and merely touches -two components. Such sensors are used at the present time in electronic games and, therefore, are very economical parts.
During normal working operations with a device for applying melted adhesives, often only very short interruptions are encountered, such as when a part must be placed in a certain position. When this is belng done, the device i.5 placed a~ide for a short period. To avoid a changeover between heating stages, it is practical if the switch from the higher temperature to lower temperature heating stage takes place with a time delay.
In this way unnecessary waiting time for reheating can be prevented.
The various features of novel-ty whlch characterize ~he invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which .
there are illustrated and described preferred embodiments of the illvention.
IN T~E DRAWING-_ The drawing is an elevational view of a device embodying the present invention.
In the drawing a device for melting a thermoplastic adhesive and for discharging measured amounts of the melted adhesive consists of a housing 1 with a handle 2 affording a pistol-li]ce grip. The handle 2 depends downwardly from one end of the housing 1. An electric supply line 3 is connected to the handle 2 as well as a pressure actuated trigger member 4. When ' the trigger member 4 is pressed inwardly, a body 5 of adhesive .
3 -L94~
material, in the Eorm of an elongated cylindrical rod, is conveyed by a transport device, known per se and not shown, in-to a melting chamber, also not shown, located within the housing.
As a par-t of the cylindrical rod of adhesive material is moved into the melting chamber a part of the rnelted adhesive is discharged through an output nozzle 6 at the front end of the housing 1. On the opposite side of the housiny 1 away from the handle 2, ventilation slots 7 are arranged fox cooling the device. In the side of the handle Z gripp~d by an opera-tor is a sensor 8 for switching betwéen the higher -temperature heating stage and the lower temperature heating stage. When the operator grasps -the handle 2, his hand encloses the handle and -touches the sensor 8 with the device automatically being switched to the higher temperature heating stage. When there is an interruption in the use of the device, and the operator releases his grasp on the handle, such releasing action causes the sensor 8 to switch from the higher temperature heating stage to the lower temperature heating stage.
~aving described what is believed to be the best mode by which the invention may be performed, it will be seen that the invention may be particularly defined as follows:
Device for melting thermoplastic adhesive and for the : . ~
measured discharge oE the melted adhesive including a housing within which the adhesive is heated and from which it is .
discharged, said housing having an outwardly extending pistol-ke handle, said housing containing at least two controllable heating stages including a higher temperature heating stage for use when the device is operating for adequately melting and discharging the melted adhesive and a lower temperature heating stage for 30; heating the thermoplastic adhesive to a tempera-ture so that the
material, in the Eorm of an elongated cylindrical rod, is conveyed by a transport device, known per se and not shown, in-to a melting chamber, also not shown, located within the housing.
As a par-t of the cylindrical rod of adhesive material is moved into the melting chamber a part of the rnelted adhesive is discharged through an output nozzle 6 at the front end of the housing 1. On the opposite side of the housiny 1 away from the handle 2, ventilation slots 7 are arranged fox cooling the device. In the side of the handle Z gripp~d by an opera-tor is a sensor 8 for switching betwéen the higher -temperature heating stage and the lower temperature heating stage. When the operator grasps -the handle 2, his hand encloses the handle and -touches the sensor 8 with the device automatically being switched to the higher temperature heating stage. When there is an interruption in the use of the device, and the operator releases his grasp on the handle, such releasing action causes the sensor 8 to switch from the higher temperature heating stage to the lower temperature heating stage.
~aving described what is believed to be the best mode by which the invention may be performed, it will be seen that the invention may be particularly defined as follows:
Device for melting thermoplastic adhesive and for the : . ~
measured discharge oE the melted adhesive including a housing within which the adhesive is heated and from which it is .
discharged, said housing having an outwardly extending pistol-ke handle, said housing containing at least two controllable heating stages including a higher temperature heating stage for use when the device is operating for adequately melting and discharging the melted adhesive and a lower temperature heating stage for 30; heating the thermoplastic adhesive to a tempera-ture so that the
- 4 -: .
~4~ ~
higher temperature heating stage quickly raises the -temperature of the melted adhesive whereby it is ready for use, wherein the improvement comprises, control means located in said handle for switching to the higher temperature heating stage when said handle is held for operatiny the device and applying melted adhesive, and for switching from the higher temperature heating s-tage to the lower temperature heating stage when said handle is released during a temporary interruption. in the use of -the device.
The invention further comprises such a device, wherein said control means comprises a sensor located in the surface of said handle so that the sensor reacts to the touch of the operator's hand when he grips the handle for operatiny the device.
The invention Lurther comprises such a device, wherein said control means includes a delay for delaying the switching from the higher temperature heating stage to the lower temperature ~ heating staye when said handle of the device is released by the ; ~ operator.
; ~ While specific embodiments of the invention have been shown and described in detail to illustrate the application :~2.0 of the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such ; principIes.
:
:
~ .
~4~ ~
higher temperature heating stage quickly raises the -temperature of the melted adhesive whereby it is ready for use, wherein the improvement comprises, control means located in said handle for switching to the higher temperature heating stage when said handle is held for operatiny the device and applying melted adhesive, and for switching from the higher temperature heating s-tage to the lower temperature heating stage when said handle is released during a temporary interruption. in the use of -the device.
The invention further comprises such a device, wherein said control means comprises a sensor located in the surface of said handle so that the sensor reacts to the touch of the operator's hand when he grips the handle for operatiny the device.
The invention Lurther comprises such a device, wherein said control means includes a delay for delaying the switching from the higher temperature heating stage to the lower temperature ~ heating staye when said handle of the device is released by the ; ~ operator.
; ~ While specific embodiments of the invention have been shown and described in detail to illustrate the application :~2.0 of the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such ; principIes.
:
:
~ .
- 5 -,
Claims (3)
1. Device for melting thermoplastic adhesive and for the measured discharge of the melted adhesive including a housing within which the adhesive is heated and from which it is discharged, said housing having an outwardly extending pistol-like handle, said housing containing at least two controllable heating stages including a higher temperature heating stage for use when the device is operating for adequately melting and discharging the melted adhesive and a lower temperature heating stage for heating the thermoplastic adhesive to a temperature so that the higher temperature heating stage quickly raises the temperature of the melted adhesive whereby it is ready for use, wherein the improvement comprises;
control means located in said handle for switching to the higher temperature heating stage when said handle is held for operating the device and applying melted adhesive, and for switching from the higher temperature heating stage to the lower temperature heating stage when said handle is released during a temporary interruption in the use of the device.
control means located in said handle for switching to the higher temperature heating stage when said handle is held for operating the device and applying melted adhesive, and for switching from the higher temperature heating stage to the lower temperature heating stage when said handle is released during a temporary interruption in the use of the device.
2. Device, as set forth in claim 1, wherein said control means comprises a sensor located in the surface of said handle so that the sensor reacts to the touch of the operator's hand when he grips the handle for operating the device.
3. Device, as set forth in claims 1 or 2, wherein said control means includes a delay for delaying the switching from the higher temperature heating stage to the lower temperature heating stage when said handle of the device is released by the operator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792936531 DE2936531A1 (en) | 1979-09-10 | 1979-09-10 | DEVICE FOR MELTING AND DELIVERING THERMOPLASTIC ADHESIVE |
| DEP2936531.9 | 1980-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1154949A true CA1154949A (en) | 1983-10-11 |
Family
ID=6080490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000358456A Expired CA1154949A (en) | 1979-09-10 | 1980-08-18 | Device for melting and dispensing a thermoplastic adhesive |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5640456A (en) |
| AT (1) | AT366603B (en) |
| BE (1) | BE885142A (en) |
| CA (1) | CA1154949A (en) |
| CH (1) | CH650949A5 (en) |
| CS (1) | CS216837B2 (en) |
| DE (1) | DE2936531A1 (en) |
| DK (1) | DK147905C (en) |
| FI (1) | FI66546C (en) |
| FR (1) | FR2464757B1 (en) |
| GB (1) | GB2059513B (en) |
| NL (1) | NL8003551A (en) |
| NO (1) | NO153039C (en) |
| SE (1) | SE442598B (en) |
| YU (1) | YU171480A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8129768U1 (en) * | 1981-10-12 | 1983-03-24 | Ursprung, Reinhard, 8919 Utting | HOT GLUE GUN |
| US4561569A (en) * | 1984-01-12 | 1985-12-31 | Minnesota Mining And Manufacturing Company | Thermoplastic dispensing device with outlet cooling chamber |
| DE3606695C1 (en) * | 1986-03-01 | 1987-10-08 | Buehnen Kg H | Applicator, especially hot melt adhesive applicator |
| US5688421A (en) * | 1991-10-11 | 1997-11-18 | Walton; William M. | Dispenser for heat-liquefiable material with contiguous PTC heater and heat exchanging member |
| US6938795B2 (en) * | 2003-11-26 | 2005-09-06 | Nordson Corporation | Hand-held fluid dispenser system and method of operating hand-held fluid dispenser systems |
| JP7025737B2 (en) * | 2018-07-27 | 2022-02-25 | 旭サナック株式会社 | Coating gun |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3665158A (en) * | 1970-07-31 | 1972-05-23 | Don T Froedge | Plastic extrusion device |
| US3744921A (en) * | 1971-05-07 | 1973-07-10 | Cooper Ind Inc | Glue gun construction |
| FR2272749A1 (en) * | 1974-05-28 | 1975-12-26 | Wittenberge Gulliez Julien Van | Adhesive dispenser with heat control - concentric springs force adhesive stick forwards onto spiked block near heating element |
| US4065034A (en) * | 1976-07-30 | 1977-12-27 | Cities Service Company | Gun-type dispenser for heat softenable adhesive or sealant compounds |
| US4059204A (en) * | 1976-10-26 | 1977-11-22 | Usm Corporation | System for dispensing and controlling the temperature of hot melt adhesive |
-
1979
- 1979-09-10 DE DE19792936531 patent/DE2936531A1/en not_active Withdrawn
-
1980
- 1980-06-09 FI FI801847A patent/FI66546C/en not_active IP Right Cessation
- 1980-06-19 NL NL8003551A patent/NL8003551A/en not_active Application Discontinuation
- 1980-06-24 CH CH4852/80A patent/CH650949A5/en not_active IP Right Cessation
- 1980-06-30 SE SE8004811A patent/SE442598B/en not_active IP Right Cessation
- 1980-07-01 YU YU01714/80A patent/YU171480A/en unknown
- 1980-07-10 GB GB8022663A patent/GB2059513B/en not_active Expired
- 1980-08-18 CA CA000358456A patent/CA1154949A/en not_active Expired
- 1980-08-21 JP JP11413480A patent/JPS5640456A/en active Pending
- 1980-08-29 CS CS805889A patent/CS216837B2/en unknown
- 1980-09-02 DK DK372480A patent/DK147905C/en not_active IP Right Cessation
- 1980-09-04 FR FR8019118A patent/FR2464757B1/en not_active Expired
- 1980-09-08 AT AT0451080A patent/AT366603B/en not_active IP Right Cessation
- 1980-09-08 NO NO802646A patent/NO153039C/en unknown
- 1980-09-09 BE BE0/202032A patent/BE885142A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8004811L (en) | 1981-03-11 |
| FI66546C (en) | 1984-11-12 |
| YU171480A (en) | 1983-04-30 |
| JPS5640456A (en) | 1981-04-16 |
| FR2464757A1 (en) | 1981-03-20 |
| DE2936531A1 (en) | 1981-03-26 |
| CS216837B2 (en) | 1982-11-26 |
| FI801847A (en) | 1981-03-11 |
| GB2059513A (en) | 1981-04-23 |
| AT366603B (en) | 1982-04-26 |
| BE885142A (en) | 1980-12-31 |
| DK372480A (en) | 1981-03-11 |
| NO153039C (en) | 1986-01-08 |
| ATA451080A (en) | 1981-09-15 |
| FI66546B (en) | 1984-07-31 |
| CH650949A5 (en) | 1985-08-30 |
| NL8003551A (en) | 1981-03-12 |
| SE442598B (en) | 1986-01-20 |
| DK147905B (en) | 1985-01-07 |
| DK147905C (en) | 1985-06-17 |
| NO802646L (en) | 1981-03-11 |
| FR2464757B1 (en) | 1985-07-05 |
| NO153039B (en) | 1985-09-30 |
| GB2059513B (en) | 1983-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4546235A (en) | Device for melting and dispensing a thermoplastic adhesive | |
| US5236269A (en) | Battery-powered dispenser for hot melt adhesive | |
| CA1154949A (en) | Device for melting and dispensing a thermoplastic adhesive | |
| US3204828A (en) | Portable thermoplastic cement dispensers | |
| US4065034A (en) | Gun-type dispenser for heat softenable adhesive or sealant compounds | |
| US7116071B2 (en) | Power tool and motor controller | |
| US5026187A (en) | Dispenser for hot-melt material | |
| US3826224A (en) | Thermoplastic dispenser system having non-clogging melting zone | |
| JPH058066B2 (en) | ||
| JPS63126574A (en) | Sizing machine | |
| US6369359B1 (en) | Self-feeding soldering device | |
| US4807361A (en) | Cutting blade lubrication | |
| US3285475A (en) | Cement extruders | |
| EP0277303A1 (en) | Melt dispensers | |
| US6118108A (en) | Heating method and apparatus to accelerate flanged joint adhesive cure | |
| US3232509A (en) | Thermogrip guns | |
| KR101764620B1 (en) | coated device of brazing ring fused-flux | |
| US20070007305A1 (en) | Adhesive-fluid dispenser | |
| JPH0739802A (en) | Heating type gun | |
| EP0257838A2 (en) | Hot-melt guns | |
| EP0375150B1 (en) | Compact heater assembly for a hot melt applicator | |
| EP0311256A1 (en) | Applicators for hot-melt materials | |
| KR200219684Y1 (en) | Multipurpose hot-melt gun | |
| KR200303545Y1 (en) | glue-gun having a switching means for a nozzle | |
| EP0696489B1 (en) | Portable electric desoldering tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |