US20010009752A1 - Melter tank for thermoplastic material and chassis for said tank - Google Patents
Melter tank for thermoplastic material and chassis for said tank Download PDFInfo
- Publication number
- US20010009752A1 US20010009752A1 US09/800,029 US80002901A US2001009752A1 US 20010009752 A1 US20010009752 A1 US 20010009752A1 US 80002901 A US80002901 A US 80002901A US 2001009752 A1 US2001009752 A1 US 2001009752A1
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- Prior art keywords
- tank
- chassis
- melter
- sidewalls
- combination
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- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
Definitions
- This invention relates to an apparatus for melting and dispensing thermoplastic materials such as thermoplastic adhesives referred to as “hot melt” adhesives. More specifically this invention relates to a one piece melter tank which is suspended from a chassis which also serves as the housing for the entire assembly of the melting and dispensing apparatus.
- thermoplastic or so-called “hot melt” materials from a solid state to a molten liquid state.
- the melted material was maintained in the molten state in the tank in sufficient volume to supply one or more applicators or dispensers.
- a number of design improvements were made over a period of time to provide greater efficiency of the melt tanks and reduce problems of charring or oxidation of the molten material due to the material being maintained in the molten state for a prolonged period of time.
- a grid type hot melt applicator was designed to have the capability of melting a very high throughput of thermoplastic material in a very short time so that the molten material was not maintained in a molten state for prolonged periods of time which could result in degradation of the material.
- a typical grid type applicator is disclosed in U.S. Pat. No. 3,964,645. Other examples are shown in U.S. Pat. Nos. 3,981,416, 4,474,311, 4,667,850, and 4,821,922. Continued efforts to improve melter apparatus has resulted in the present invention.
- a primary object of this invention is to provide a hot melt unit which is simple to construct and assemble and which can be produced at reduced cost to those devices of greater complexity.
- Another object of this invention is to provide a low cost tank casting which does not require to of tank flanges which are needed on many of the previous designs.
- Another object of the invention is to eliminate the need for providing a supporting base beneath the melt tank and manifold.
- a still further object of this invention is to provide a more versatile pump/drive mounting surface.
- An even further object of the invention is to provide a simplified one piece melt tank and manifold cast as an integral unit.
- a melter tank for thermoplastic material and a supporting chassis comprising: a tank having a bottom and a plurality of sidewalls extending upwardly therefrom, forming an open topped tank, the sidewalls of the tank having upper edge portions extending around the top of the tank, heating means associated with the bottom of the tank, a chassis having a top and at least two sidewalls extending downwardly therefrom, a rigid top insulator panel to rest on the upper edge portions of the tank sidewalls, means connecting the tank to the top of the chassis with the rigid insulator panel clamped between the upper edge portions of the sidewalls and an underside of the top of the chassis to suspend the tank from the chassis.
- FIG. 1 is a perspective view of an entire assembly of a unit of melting apparatus for melting and dispensing thermoplastic material
- FIG. 2 is a perspective view of a melt tank of the invention with an integral manifold section cast in one piece with the melt tank;
- FIG. 3 is a top plan view of the melt tank of FIG. 2;
- FIG. 4 is a side elevational view of the melt tank of FIG. 3;
- FIG. 5 is a bottom view of the tank of FIGS. 3 and 4 , with a partial cross-section of the manifold taken on line 5 - 5 of FIG. 4;
- FIG. 6 is an end view of the melt tank looking at the left end of FIG. 4;
- FIG. 7 is a plan view of a subassembly of pipes forming a manifold duct system
- FIG. 8 is a fragmentary cross-sectional view of a cast manifold duct system with threaded steel nipple inserts
- FIG. 9 is a perspective view of a chassis for supporting the melt tank of FIGS. 2 through 6 and showing the melt tank indicated by chain dotted lines mounted within the chassis;
- FIG. 10 is a cross sectional side view through the chassis and the melt tank with the melt tank mounted in a suspended position within the chassis.
- a complete assembly of a melter unit for melting and dispensing thermoplastic material is indicated generally by the numeral 10 .
- the unit 10 has a chassis 12 which also functions as a housing for the melt tank which will be shown and described in later drawing figures.
- a hinged lid 14 is mounted on top of the chassis/housing 12 .
- a pump assembly 16 driven by an electric motor 18 is mounted on one end of the chassis 12 .
- a pump cover 19 rests on the top of the chassis 12 and covers the pump 16 and motor 18 .
- an electrical control box 20 On the opposite end of the chassis 12 is an electrical control box 20 which will not be described in further detail since it is not part of the invention.
- a manifold access opening 22 is provided on one side of the chassis 12 . Extending from the opening 22 are hose ports 24 , a pressure control 26 , a drain 28 , and a filter unit 30 .
- a melt tank 32 preferably of cast aluminum has an integral manifold portion 34 cast on the bottom of the tank as best seen in FIG. 5.
- a manifold duct system 35 has a duct 36 which interconnects hose ports 24 , the pressure control 26 , the drain 28 and the filter unit 30 which were previously shown in FIG. 1 as projecting through an access opening 22 in the chassis 12 .
- the duct system 35 can either be machined into the manifold portion 34 , or made with cast in place cored ducts and porting, or the duct system can be preformed as a subassembly of steel pipe or other suitable metal in a configuration similar to that shown in FIG. 7 and the subassembly can then be positioned in a mold (not shown)in which the melt tank is formed and the duct system can be cast in place within the manifold portion 34 at the same time the entire melt tank is cast.
- the duct system 35 uses standard cored porting in which the duct and ports are cast in place around, for example, a sand core, then internally threaded steel insert nipples 24 a , 26 a 28 a and 30 a as shown in FIG. 8 are needed to provide stronger threaded openings than would be provided by the cast material of the tank manifold 34 .
- the preferred method of forming the manifold duct system 35 is to preform a subassembly of steel pipes as shown in FIG. 7 wherein a duct 36 connects ports 24 , 26 , 28 and 30 all of which are brazed or welded together to form the subassembly 35 . All the ports are internally threaded in the same manner as the steel nipple inserts 24 a , 26 a , 28 a , and 30 a shown in FIG. 8.
- Using a preformed subassembly of steel pipes provides a duct system which is better able to contain the high pressure of melted liquid being pumped through the duct system and such steel pipe duct system compensates for any porosity in the tank material in manifold portion 34 .
- the tank 32 which is of substantially rectangular shape has end walls 38 and 40 and sidewalls 42 and 44 .
- a bottom 46 is inclined diagonally across the tank 44 at an angle with respect to a horizontal plane to permit drainage of molten material in the tank from the highest corner of the bottom to the lowest corner of the bottom which is indicated in FIG. 3 by a triangular low area 48 which also contains a circular pump recess 50 .
- the recess 50 functions as a sump or collection recess from which a pump withdraws molten material as will be explained later in further detail.
- a series of fins or ribs 52 extend vertically upward from the bottom 46 and are inclined at angles to direct the flow of molten material toward the low area 48 and the pump recess 50 .
- a sinusoidal pattern of electrical resistance heating wires 54 are embedded inside the tank bottom 46 . These wires are connected electrically in a know manner (not shown) to an electrical power source in the control box 20 . During the melting operation the wires 54 heat the tank bottom 46 and the heat passes through the fins 52 to provide heat transfer to the material in the tank.
- a cast in place mounting tab 56 each having a slot 58 is positioned on each corner of the tank 32 .
- the chassis 12 is shown in detail in FIG. 9 as a substantially rectangular box shaped member having sidewalls 60 and 62 formed integrally with a top 64 from heavy gauge sheet metal.
- a separate end wall 66 is attached to one end of the chassis and the opposite end is closed by the control box 20 shown in FIG. 1.
- the top 64 has an access opening 68 which provides communication with the melt tank 32 and which is covered by the lid 14 shown in FIG. 1.
- a pump access hole 70 is also provided in the top 64 of the chassis 12 to receive the pump assembly 16 and to permit it to extend downwardly into the tank 32 as shown in FIG. 10.
- a fixed nut 72 is attached to the chassis top 64 near each corner thereof in a position to be in alignment with one of the four mounting tabs 56 on the tank 32 .
- Each tab 56 receives a bolt 74 extending through one of the slots 58 and screwing into one of the nuts 72 .
- a plurality of “Belleville washers” 76 are positioned on each bolt 74 between the bolt head and the bottom of the respective mounting tab 56 when the bolt 74 is threaded into one of the nuts 72 and is tightened against the tab 56 .
- the washers 76 compensate for expansion and contraction of the bolts 74 due to changes in temperature of the bolts.
- the melt tank 32 when mounted in a suspended position from the chassis top 64 clamps a rigid insulation panel 78 between the top edge 33 of the tank 32 and the chassis top 64 .
- the sidewalls 60 and 62 and ends of the chassis can be lined with flexible insulation panels 80 .
- the chassis 12 has a removable bottom 82 and four resilient foot pads 84 located at each corner to serve as vibration dampers.
- the pump assembly 16 is mounted in the opening 70 by means of a drive mount 86 attached to the chassis top 64 .
- the pump 16 extends downwardly to near the bottom of the pump recess 50 .
- the pump 16 draws in molten material from the recess 50 and passes it through a drop tube 88 into the manifold portion 34 where it passes through the filter unit 30 and then to the duct 36 and to hose ports 24 .
- the operation of the pump 16 will not be described in further detail since the pump does not form part of the invention.
- a “Gerotor” type pump is shown which uses intermeshing gears to move the molten material from the recess 50 into the manifold portion 34 , however other types of pumps can also serve this function.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
An apparatus for melting and dispensing thermoplastic materials such as thermoplastic adhesives referred to as “hot melt” adhesives. More specifically this invention relates to a one piece melter tank which is suspended from the top of a chassis which also serves as the housing for the entire assembly of the melting and dispensing apparatus.
Description
- This invention relates to an apparatus for melting and dispensing thermoplastic materials such as thermoplastic adhesives referred to as “hot melt” adhesives. More specifically this invention relates to a one piece melter tank which is suspended from a chassis which also serves as the housing for the entire assembly of the melting and dispensing apparatus.
- There are many known types of apparatus for converting thermoplastic or so-called “hot melt” materials from a solid state to a molten liquid state. The melted material was maintained in the molten state in the tank in sufficient volume to supply one or more applicators or dispensers. A number of design improvements were made over a period of time to provide greater efficiency of the melt tanks and reduce problems of charring or oxidation of the molten material due to the material being maintained in the molten state for a prolonged period of time.
- A grid type hot melt applicator was designed to have the capability of melting a very high throughput of thermoplastic material in a very short time so that the molten material was not maintained in a molten state for prolonged periods of time which could result in degradation of the material. A typical grid type applicator is disclosed in U.S. Pat. No. 3,964,645. Other examples are shown in U.S. Pat. Nos. 3,981,416, 4,474,311, 4,667,850, and 4,821,922. Continued efforts to improve melter apparatus has resulted in the present invention.
- A primary object of this invention is to provide a hot melt unit which is simple to construct and assemble and which can be produced at reduced cost to those devices of greater complexity.
- Another object of this invention is to provide a low cost tank casting which does not require to of tank flanges which are needed on many of the previous designs.
- Another object of the invention is to eliminate the need for providing a supporting base beneath the melt tank and manifold.
- A still further object of this invention is to provide a more versatile pump/drive mounting surface.
- An even further object of the invention is to provide a simplified one piece melt tank and manifold cast as an integral unit.
- These and other objects of the invention will become more fully apparent from the description in the following specification and the attached drawings.
- The combination of a melter tank for thermoplastic material and a supporting chassis comprising: a tank having a bottom and a plurality of sidewalls extending upwardly therefrom, forming an open topped tank, the sidewalls of the tank having upper edge portions extending around the top of the tank, heating means associated with the bottom of the tank, a chassis having a top and at least two sidewalls extending downwardly therefrom, a rigid top insulator panel to rest on the upper edge portions of the tank sidewalls, means connecting the tank to the top of the chassis with the rigid insulator panel clamped between the upper edge portions of the sidewalls and an underside of the top of the chassis to suspend the tank from the chassis.
- FIG. 1 is a perspective view of an entire assembly of a unit of melting apparatus for melting and dispensing thermoplastic material;
- FIG. 2 is a perspective view of a melt tank of the invention with an integral manifold section cast in one piece with the melt tank;
- FIG. 3 is a top plan view of the melt tank of FIG. 2;
- FIG. 4 is a side elevational view of the melt tank of FIG. 3;
- FIG. 5 is a bottom view of the tank of FIGS.3 and 4, with a partial cross-section of the manifold taken on line 5-5 of FIG. 4;
- FIG. 6 is an end view of the melt tank looking at the left end of FIG. 4;
- FIG. 7 is a plan view of a subassembly of pipes forming a manifold duct system;
- FIG. 8 is a fragmentary cross-sectional view of a cast manifold duct system with threaded steel nipple inserts;
- FIG. 9 is a perspective view of a chassis for supporting the melt tank of FIGS. 2 through 6 and showing the melt tank indicated by chain dotted lines mounted within the chassis; and
- FIG. 10 is a cross sectional side view through the chassis and the melt tank with the melt tank mounted in a suspended position within the chassis.
- Referring now to the drawings and in particular to FIG. 1, a complete assembly of a melter unit for melting and dispensing thermoplastic material is indicated generally by the
numeral 10. Theunit 10 has achassis 12 which also functions as a housing for the melt tank which will be shown and described in later drawing figures. Ahinged lid 14 is mounted on top of the chassis/housing 12. Apump assembly 16 driven by anelectric motor 18 is mounted on one end of thechassis 12. Apump cover 19 rests on the top of thechassis 12 and covers thepump 16 andmotor 18. - On the opposite end of the
chassis 12 is anelectrical control box 20 which will not be described in further detail since it is not part of the invention. - A
manifold access opening 22 is provided on one side of thechassis 12. Extending from the opening 22 arehose ports 24, apressure control 26, adrain 28, and afilter unit 30. - Referring now to FIGS. 2 through 6 and in particular to FIG. 2, a
melt tank 32 preferably of cast aluminum has anintegral manifold portion 34 cast on the bottom of the tank as best seen in FIG. 5. Amanifold duct system 35 has aduct 36 which interconnectshose ports 24, thepressure control 26, thedrain 28 and thefilter unit 30 which were previously shown in FIG. 1 as projecting through an access opening 22 in thechassis 12. - The
duct system 35 can either be machined into themanifold portion 34, or made with cast in place cored ducts and porting, or the duct system can be preformed as a subassembly of steel pipe or other suitable metal in a configuration similar to that shown in FIG. 7 and the subassembly can then be positioned in a mold (not shown)in which the melt tank is formed and the duct system can be cast in place within themanifold portion 34 at the same time the entire melt tank is cast. - If the
duct system 35 uses standard cored porting in which the duct and ports are cast in place around, for example, a sand core, then internally threaded steel insert nipples 24 a, 26 a 28 a and 30 a as shown in FIG. 8 are needed to provide stronger threaded openings than would be provided by the cast material of thetank manifold 34. - The preferred method of forming the
manifold duct system 35 is to preform a subassembly of steel pipes as shown in FIG. 7 wherein aduct 36 connectsports subassembly 35. All the ports are internally threaded in the same manner as the steel nipple inserts 24 a, 26 a, 28 a, and 30 a shown in FIG. 8. - Using a preformed subassembly of steel pipes provides a duct system which is better able to contain the high pressure of melted liquid being pumped through the duct system and such steel pipe duct system compensates for any porosity in the tank material in
manifold portion 34. - Regardless of which method is used for forming the
duct system 35, it is important to have internally threaded steel nipples in the outlet ports to provide a positive seal with any components which may screwed into the port without the need for any O-ring seals. - Referring again to FIG. 2, the
tank 32 which is of substantially rectangular shape hasend walls sidewalls - A
bottom 46 is inclined diagonally across thetank 44 at an angle with respect to a horizontal plane to permit drainage of molten material in the tank from the highest corner of the bottom to the lowest corner of the bottom which is indicated in FIG. 3 by a triangularlow area 48 which also contains acircular pump recess 50. Therecess 50 functions as a sump or collection recess from which a pump withdraws molten material as will be explained later in further detail. - As shown in FIGS. 2 and 3, a series of fins or
ribs 52 extend vertically upward from thebottom 46 and are inclined at angles to direct the flow of molten material toward thelow area 48 and the pump recess 50. As shown in FIG. 3, a sinusoidal pattern of electricalresistance heating wires 54 are embedded inside thetank bottom 46. These wires are connected electrically in a know manner (not shown) to an electrical power source in thecontrol box 20. During the melting operation thewires 54 heat thetank bottom 46 and the heat passes through thefins 52 to provide heat transfer to the material in the tank. - A cast in
place mounting tab 56 each having aslot 58 is positioned on each corner of thetank 32. - The
chassis 12 is shown in detail in FIG. 9 as a substantially rectangular box shapedmember having sidewalls top 64 from heavy gauge sheet metal. Aseparate end wall 66 is attached to one end of the chassis and the opposite end is closed by thecontrol box 20 shown in FIG. 1. - The
top 64 has anaccess opening 68 which provides communication with themelt tank 32 and which is covered by thelid 14 shown in FIG. 1. Apump access hole 70 is also provided in thetop 64 of thechassis 12 to receive thepump assembly 16 and to permit it to extend downwardly into thetank 32 as shown in FIG. 10. - A
fixed nut 72 is attached to thechassis top 64 near each corner thereof in a position to be in alignment with one of the fourmounting tabs 56 on thetank 32. Eachtab 56 receives abolt 74 extending through one of theslots 58 and screwing into one of thenuts 72. A plurality of “Belleville washers” 76 are positioned on eachbolt 74 between the bolt head and the bottom of the respective mountingtab 56 when thebolt 74 is threaded into one of the nuts 72 and is tightened against thetab 56. Thewashers 76 compensate for expansion and contraction of thebolts 74 due to changes in temperature of the bolts. - As best seen in FIG. 10, the
melt tank 32 when mounted in a suspended position from thechassis top 64 clamps arigid insulation panel 78 between the top edge 33 of thetank 32 and thechassis top 64. Thesidewalls flexible insulation panels 80. - The
chassis 12 has a removable bottom 82 and fourresilient foot pads 84 located at each corner to serve as vibration dampers. - The
pump assembly 16 is mounted in theopening 70 by means of adrive mount 86 attached to thechassis top 64. Thepump 16 extends downwardly to near the bottom of thepump recess 50. In operation thepump 16 draws in molten material from therecess 50 and passes it through a drop tube 88 into themanifold portion 34 where it passes through thefilter unit 30 and then to theduct 36 and tohose ports 24. The operation of thepump 16 will not be described in further detail since the pump does not form part of the invention. For purposes of illustration a “Gerotor” type pump is shown which uses intermeshing gears to move the molten material from therecess 50 into themanifold portion 34, however other types of pumps can also serve this function. - It should be understood that certain variations can be made in the structural details of the melt tank and the chassis and these as well as other modifications can be made in the device shown herein without departing from the scope of the invention.
Claims (28)
1. A one piece cast melter tank for thermoplastic material comprising:
a tank bottom;
a plurality of integral sidewalls extending upwardly from the tank bottom and forming an open topped chamber therewith;
heating means formed integrally within the tank bottom;
a manifold section formed integral with the tank bottom and having a duct system adapted to communicate with the chamber for distribution of material melted within the chamber; and
mounting means integral with the tank for attaching the tank to a supporting chassis.
2. A melter tank as claimed in wherein the tank has a plurality of heat transfer ribs extending upwardly from the tank bottom.
claim 1
3. A melter tank as claimed in wherein the tank is of substantially rectangular shape and the tank bottom is inclined diagonally from a highest level at one corner to a lowest level at a diagonally opposite corner of the tank.
claim 1
4. A melter tank as claimed in including a recessed area in the lowest level of the tank bottom for receiving a bottom end of a pump housing.
claim 3
5. A melter tank as claimed in wherein the manifold has an access port portion facing outwardly on one side of the tank with a plurality of access ports which communicate with the duct system of the manifold.
claim 1
6. A melter tank as claimed in wherein the access ports are lined with internally threaded steel nipples.
claim 5
7. A melter tank as claimed in wherein the duct system is preformed as a subassembly of steel pipes and cast in place within the manifold portion of the tank.
claim 1
8. A melter tank as claimed in wherein the mounting means is a plurality of projections extending outwardly from the side of the tank to receive fasteners which secure the tank to a chassis.
claim 1
9. The combination of a melter tank for thermoplastic material and a supporting chassis comprising:
a tank having a bottom and a plurality of sidewalls extending upwardly therefrom, forming an open topped tank;
the sidewalls of the tank having upper edge portions extending around the top of the tank;
heating means associated with the bottom of the tank;
a chassis having a top and at least two sidewalls extending downwardly therefrom;
a rigid top insulator panel to rest on the upper edge portions of the tank sidewalls;
means connecting the tank to the top of the chassis with the rigid insulator panel clamped between the upper edge portions of the sidewalls and an underside of the top of the chassis to suspend the tank from the chassis.
10. The combination claimed in wherein the mounting means on the tank is a plurality of outwardly extending mounting tabs having bolt receiving openings therethrough.
claim 9
11. The combination claimed in wherein the means connecting the tank to the top of the chassis is a bolt extending from each of the mounting tabs of the tank and a fixed nut on the top of the chassis positioned above a hole in the chassis top which is in alignment with one of the bolts when placed in its respective mounting tab.
claim 10
12. The combination claimed in wherein a plurality of Belleville washers are positioned on the bolts between bolt heads and the mounting tabs to compensate for changes in length of the bolts due to heat from the melter tank.
claim 11
13. The combination claimed in including insulation panels on the inside of each sidewall of the chassis.
claim 9
14. The combination claimed in wherein the tank has a manifold portion located beneath the bottom of the tank.
claim 9
15. The combination claimed in wherein at least one of the sidewalls of the chassis has an access opening which is in register with an access port portion of the manifold.
claim 14
16. The combination claimed in wherein the manifold is integral with the tank.
claim 14
17. The combination claimed in wherein the manifold portion contains a duct system formed as a subassembly of steel pipes and cast in place within the manifold during casting of the tank.
claim 16
18. The combination claimed in wherein the top of the chassis and the insulator panel each have an access opening and a pump opening, with the openings on each part being in register with similar openings on the other part.
claim 9
19. A chassis for supporting a melter tank for thermoplastic material comprising:
a substantially rectangular chassis body having a cross-section of an inverted U-shape;
the body having a horizonal top and at least two vertical sidewalls extending downwardly therefrom;
the sidewalls having bottom edge portions adapted to rest on a horizontal surface; and
the top of the chassis body being adapted to support a melter tank suspended therefrom with a top of the tank adjacent to an underside of the of the top of the chassis body and a bottom of the tank spaced above the surface upon which the chassis is resting.
20. A chassis as claimed in wherein the chassis is adapted to mount an insulation panel between the top of the chassis body and the top of the melter tank to retain heat within the melter tank when the tank is mounted within the chassis body.
claim 19
21. A chassis as claimed in wherein at least part of the chassis sidewalls are insulated from the melter tank when it is mounted in the chassis.
claim 19
22. A chassis as claimed in wherein the top of the chassis body has an access opening and a pump housing opening therethrough.
claim 19
23. A chassis as claimed in wherein the chassis is fitted with a lid to cover the access opening.
claim 22
24. A chassis as claimed in wherein at least one of the sidewalls has an access opening therein for access to manifold ports on a melter tank when such tank is mounted in the chassis.
claim 19
25. A chassis as claimed in wherein the chassis body has at least one removable side wall for access to inside of the chassis.
claim 19
26. The combination of a melter tank for thermoplastic material and a supporting chassis comprising:
a one piece cast tank having a bottom and a plurality of sidewalls extending upwardly therefrom, forming an open topped tank;
the sidewalls of the tank having upper edge portions extending around the top of the tank;
heating means integral with the bottom of the tank;
a manifold section formed integral with the tank bottom and having duct passages adapted to communicate with the interior of the tank for distribution of material melted within the tank;
a chassis having a top and at least two sidewalls extending downwardly therefrom;
a rigid top insulator panel adapted to rest on the upper edge portions of the tank sidewalls; and
means connecting the tank to the top of the chassis to suspend the tank from the chassis with the rigid insulator panel clamped between the upper edge portions of the sidewalls and an underside of the top of the chassis.
27. The combination claimed in wherein the means connecting the tank to the top of the chassis is a plurality of mounting tabs integral with the sidewalls of the tank and a bolt extending upwardly from each of the mounting tabs of the tank to a fixed nut on the top of the chassis positioned above a hole in the chassis top which is in alignment with one of the bolts when placed in the mounting tabs.
claim 26
28. The combination claimed in wherein a plurality of Belleville washers are positioned on the bolts between bolt heads and the mounting tabs to compensate for changes in length of the bolts due to heat from the melter tank.
claim 27
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/800,029 US6433315B2 (en) | 1997-04-14 | 2001-03-06 | Melter tank for thermoplastic material and chassis for said tank |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/833,943 US5919384A (en) | 1997-04-14 | 1997-04-14 | Melter tank for thermoplastic material and chassis for said tank |
US33431899A | 1999-06-16 | 1999-06-16 | |
US09/800,029 US6433315B2 (en) | 1997-04-14 | 2001-03-06 | Melter tank for thermoplastic material and chassis for said tank |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US33431899A Continuation | 1997-04-14 | 1999-06-16 |
Publications (2)
Publication Number | Publication Date |
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US20010009752A1 true US20010009752A1 (en) | 2001-07-26 |
US6433315B2 US6433315B2 (en) | 2002-08-13 |
Family
ID=25265692
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/833,943 Expired - Fee Related US5919384A (en) | 1997-04-14 | 1997-04-14 | Melter tank for thermoplastic material and chassis for said tank |
US09/800,029 Expired - Fee Related US6433315B2 (en) | 1997-04-14 | 2001-03-06 | Melter tank for thermoplastic material and chassis for said tank |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US08/833,943 Expired - Fee Related US5919384A (en) | 1997-04-14 | 1997-04-14 | Melter tank for thermoplastic material and chassis for said tank |
Country Status (6)
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---|---|
US (2) | US5919384A (en) |
EP (2) | EP0872284B1 (en) |
JP (1) | JPH10328607A (en) |
CA (1) | CA2232296A1 (en) |
DE (1) | DE69819394T2 (en) |
ES (1) | ES2208991T3 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140119842A1 (en) * | 2012-10-26 | 2014-05-01 | Nordson Corporation | Pedestal for supporting an adhesive melter and related systems and methods |
US9580257B2 (en) | 2013-09-04 | 2017-02-28 | Nordson Corporation | Hot melt adhesive supply having agitation device, and related methods |
CN111432943A (en) * | 2017-12-01 | 2020-07-17 | 克力宝胶粘剂化学有限公司 | Apparatus and method for melting hot melt adhesive |
US11766808B2 (en) | 2021-01-22 | 2023-09-26 | Robatech Ag | Melter for preparing a molten medium |
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US10486185B2 (en) * | 2015-11-20 | 2019-11-26 | Illinois Tool Works Inc. | Positioning device in a melting unit of a hot melt adhesive system |
USD998008S1 (en) | 2019-09-20 | 2023-09-05 | Nordson Corporation | Melter system |
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DE1577630A1 (en) * | 1966-05-02 | 1970-03-19 | American Can Co | Liquid dividing system |
US3585361A (en) * | 1969-06-18 | 1971-06-15 | Nordson Corp | Supply system for heating and dispensing molten thermoplastic material |
US3964645A (en) * | 1975-02-12 | 1976-06-22 | Nordson Corporation | Apparatus for melting and dispensing thermoplastic material |
US3981416A (en) * | 1975-02-12 | 1976-09-21 | Nordson Corporation | Apparatus for melting and dispensing thermoplastic material |
US4303108A (en) | 1977-01-26 | 1981-12-01 | Nordson Corporation | Hot melt adhesive dispensing system of the hand held gun type |
JPS5418428A (en) * | 1977-07-08 | 1979-02-10 | Graenges Weda Ab | Holding container |
US4474311A (en) * | 1981-07-31 | 1984-10-02 | Nordson Corporation | Thermoplastic melting and dispensing apparatus |
US4456151A (en) * | 1981-09-14 | 1984-06-26 | Nordson Corporation | Housing for apparatus for melting and dispensing thermoplastic material |
US4485942A (en) * | 1981-09-14 | 1984-12-04 | Nordson Corporation | Apparatus for melting and dispensing thermoplastic material |
CA1200688A (en) * | 1982-09-30 | 1986-02-18 | Peter J. Petrecca | Apparatus for melting and dispensing thermoplastic material |
DE3522671A1 (en) * | 1985-06-25 | 1987-01-08 | Dittberner Gmbh | Device for liquefying thermoplastic material, in particular hot-melt adhesives |
US4667850A (en) * | 1985-10-28 | 1987-05-26 | Nordson Corporation | Thermoplastic grid melter |
EP0264630A3 (en) * | 1986-10-23 | 1992-09-09 | Nordson Corporation | Apparatus for melting thermoplastics |
US4821922A (en) * | 1987-10-29 | 1989-04-18 | Nordson Corporation | Thermoplastic melting apparatus with a level indicator |
US5645743A (en) * | 1995-05-18 | 1997-07-08 | Illinois Tool Works Inc. | Multiple heat source grid assembly |
US5919384A (en) | 1997-04-14 | 1999-07-06 | Nordson Corporation | Melter tank for thermoplastic material and chassis for said tank |
-
1997
- 1997-04-14 US US08/833,943 patent/US5919384A/en not_active Expired - Fee Related
-
1998
- 1998-03-13 CA CA002232296A patent/CA2232296A1/en not_active Abandoned
- 1998-04-09 DE DE69819394T patent/DE69819394T2/en not_active Expired - Fee Related
- 1998-04-09 ES ES98106538T patent/ES2208991T3/en not_active Expired - Lifetime
- 1998-04-09 EP EP98106538A patent/EP0872284B1/en not_active Expired - Lifetime
- 1998-04-09 EP EP03104054A patent/EP1396322A2/en not_active Withdrawn
- 1998-04-14 JP JP10102410A patent/JPH10328607A/en active Pending
-
2001
- 2001-03-06 US US09/800,029 patent/US6433315B2/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140119842A1 (en) * | 2012-10-26 | 2014-05-01 | Nordson Corporation | Pedestal for supporting an adhesive melter and related systems and methods |
US9499355B2 (en) * | 2012-10-26 | 2016-11-22 | Nordson Corporation | Pedestal for supporting an adhesive melter and related systems and methods |
US10202246B2 (en) | 2012-10-26 | 2019-02-12 | Nordson Corporation | Pedestal for supporting an adhesive melter and related systems and methods |
US9580257B2 (en) | 2013-09-04 | 2017-02-28 | Nordson Corporation | Hot melt adhesive supply having agitation device, and related methods |
CN111432943A (en) * | 2017-12-01 | 2020-07-17 | 克力宝胶粘剂化学有限公司 | Apparatus and method for melting hot melt adhesive |
US11458652B2 (en) | 2017-12-01 | 2022-10-04 | Klebchemie M. G. Becker Gmbh & Co. Kg | Device and method for melting a hot-melt adhesive |
US11766808B2 (en) | 2021-01-22 | 2023-09-26 | Robatech Ag | Melter for preparing a molten medium |
Also Published As
Publication number | Publication date |
---|---|
US5919384A (en) | 1999-07-06 |
JPH10328607A (en) | 1998-12-15 |
EP0872284A3 (en) | 1999-06-16 |
US6433315B2 (en) | 2002-08-13 |
EP1396322A2 (en) | 2004-03-10 |
DE69819394D1 (en) | 2003-12-11 |
EP0872284B1 (en) | 2003-11-05 |
EP0872284A2 (en) | 1998-10-21 |
CA2232296A1 (en) | 1998-10-14 |
ES2208991T3 (en) | 2004-06-16 |
DE69819394T2 (en) | 2004-09-09 |
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