TW201333400A - Melter cartridge - Google Patents

Abstract

A system includes a base, a melter, and a heater. The base defines a basin with an outlet connected to the basin. The melter is above the base and has an upper end for receiving hot melt pellets and a lower end adjacent to the basin so that hot melt liquid can flow from the melter through the basin to the outlet. The heater is attached to at least one of the base and the melter, and the melter is releasably attached to at least one of the base and the heater.

Description

Furnace card

The present invention is generally directed to systems for dispensing hot melt adhesives. More particularly, the present invention relates to a furnace cartridge for a hot melt dispensing system.

Hot melt dispensing systems are typically used in manufacturing assembly lines to automatically disperse one of the adhesives used in the construction of packaging materials such as cartons, cartons, and the like. The hot melt dispensing system conventionally includes a storage tank, a plurality of heating elements, a pump, and a dispenser. The solid polymer pellets are melted into the tank using a heating element prior to being supplied to the dispenser by a pump. Since the molten pellets are allowed to cool to solid form if they are allowed to cool, the molten pellets must be maintained at a certain temperature from the tank to the dispenser. This typically requires placing heating elements in the tank, pump, and dispenser, as well as heating any tubing or hoses that connect the components. In addition, conventional hot melt dispensing systems typically utilize a can having a large volume such that an extended dispensing cycle can occur after the pellets contained therein are melted. However, large volumes of pellets in the tank require an ultra-long period of time to completely melt, which increases the startup time of the system. For example, a typical canister includes a plurality of heating elements that are lined against the walls of a rectangular gravity feed canister such that the molten pellets along the wall impede the heating element from efficiently melting the pellets in the center of the vessel. The extended period of time required to melt the pellets in such tanks increases the likelihood that the binder will "carbonize" or darken due to prolonged thermal exposure.

In accordance with the present invention, a system includes a base, a furnace, and a heater. The base defines a recess having an outlet connected to the recess. The furnace is located above the base and has an upper end for receiving hot molten pellets and adjacent a lower end of the recess such that hot molten liquid can flow from the furnace through the recess to the outlet. The heater is attached to at least one of the base and the furnace, and the furnace is releasably attached to at least one of the base and the heater.

In another embodiment, a system includes a base, a furnace, and a heater. The base has an outlet for the hot melt liquid. The furnace is located above the base and has an upper end and a lower end for receiving hot molten pellets such that hot melt liquid can flow from the furnace to the outlet. The heater is releasably attached to at least one of the base and the furnace.

In another embodiment, an assembly method for a system includes: attaching a releasably attached furnace to the base such that the furnace contacts an upper end of the base and stacks the axis along one of the systems extend. Additionally, a releasably attachable heater is coupled to at least one of the base and the furnace, and the heater is coaxial with the stacking axis of the system.

1 is a schematic illustration of a system 10 for dispensing a system of a hot melt adhesive. System 10 includes a cold section 12, a hot section 14, an air source 16, an air control valve 17, and a controller 18. In the embodiment shown in FIG. 1, the cold section 12 includes a vessel 20 and a feed assembly 22 that includes a vacuum assembly 24, a feed hose 26, and an inlet 28. In the embodiment shown in FIG. 1, the hot section 14 includes a melting system 30, a pump 32, and a dispenser 34. air Gas source 16 is a source of compressed air that is supplied to components of system 10 in both cold section 12 and hot section 14. Air control valve 17 is coupled to air source 16 via air hose 35A and selectively controls air flow from air source 16 through air hose 35B to vacuum assembly 24 and through air hose 35C to motor 36 of pump 32. Air hose 35D connects air source 16 to dispenser 34 to bypass air control valve 17. Controller 18 is coupled to communicate with various components of system 10, such as air control valve 17, melt system 30, pump 32, and/or dispenser 34 for controlling the operation of system 10.

The components of the cold section 12 can be operated at room temperature without being heated. The container 20 can be used in a hopper containing one of the solid binder pellets for use by the system 10. For example, suitable adhesives may comprise a thermoplastic polymer adhesive such as ethylene vinyl acetate (EVA) or a metallocene. Feed assembly 22 connects vessel 20 to hot section 14 for delivery of solid binder pellets from vessel 20 to hot section 14. Feed assembly 22 includes a vacuum assembly 24 and a feed hose 26. The vacuum assembly 24 is positioned in the container 20. Compressed air from air source 16 and air control valve 17 is delivered to vacuum assembly 24 to form a vacuum to induce solid binder pellets to flow into inlet 28 of vacuum assembly 24 and then through feed hose 26 To the hot section 14. The feed hose 26 is sized to have a diameter substantially larger than one of the diameters of the solid binder pellets to allow the solid binder pellets to flow freely through the tube or other passage of the feed hose 26. . Feed hose 26 connects vacuum assembly 24 to hot section 14.

The solid binder pellets are delivered from the feed hose 26 to the melt system 30. Melting system 30 can include pellets for melting the solid binder to form a liquid One of the forms is a container of hot melt adhesive and a plurality of resistive heating elements. The melting system 30 can be sized to have a relatively small binder volume (for example, about 0.5 liters) and configured to melt the solid binder pellets in a relatively short period of time. Pump 32 is driven by motor 36 to pump hot melt adhesive from melt system 30 to dispenser 34 through supply hose 38. Motor 36 can be driven by a pulse of compressed air from air source 16 and air control valve 17 to drive one of the air motors. Pump 32 can be driven by motor 36 as a linear displacement pump. In the illustrated embodiment, the dispenser 34 includes a manifold 40 and a dispensing module 42. The hot melt adhesive from pump 32 is received in manifold 40 and dispensed via dispensing module 42. The dispenser 34 selectively discharges the hot melt adhesive thereby ejecting the hot melt adhesive out of the outlet 44 of the dispensing module 42 to an article (such as a package, a box, or benefiting from the system 10) Another item of hot melt adhesive). The dispensing module 42 can be one of a plurality of modules that are part of the dispenser 34. In an alternate embodiment, the dispenser 34 can have a different configuration, such as a hand held gun-type dispenser. Some or all of the components in the thermal section 14 (including the melt system 30, the pump 32, the supply hose 38, and the dispenser 34) may be heated to allow the hot melt adhesive to pass throughout the hot section during the dispensing process 14 remains in a liquid state.

For example, system 10 can be utilized as part of an industrial process for packaging and sealing cardboard packaging and/or packaging. In an alternative embodiment, system 10 can be modified as needed for a particular industrial program application. For example, in one embodiment (not shown), the pump 32 can be separate from the melt system 30 and instead attached to the dispenser 34. Supply hose 38 can then connect the melting system 30 Connected to pump 32.

In Figure 2A, a side view of one of the melting systems 30 is shown. In the illustrated embodiment, the melting system 30 includes a base 46, a furnace 48, a band heater 50, a heat insulator 52, a feed cap 54, a sensor tower 56, and a level sensor 58. Furnace 48 is positioned on and supported by base 46. The base 46 includes bolt holes 60 for connecting the base 46 to the pump 32 (shown in Figure 1). The base 46 also includes a base outlet 62 to allow fluid to flow from the furnace 48 to the pump 32. The band heater 50 is attached to the furnace 48 for heating the furnace 48, and the base heater 63 is attached to the base 46 for heating the base 46. The base heater 63 is a one-piece electric resistance heating element in the form of a rod, as shown later in Figure 6. The band heater 50 is an electrically resistive heating element that is circumferentially wound around the furnace 48 and in contact with the furnace 48 for conducting the thermal self-contained heater 50 to the furnace 48. The furnace 48 is a container for melting the binder pellets into a liquid state and for holding the binder pellets and the hot melt adhesive in a liquid state. In the illustrated embodiment, the furnace 48 is substantially cylindrical. In an alternative embodiment, the furnace 48 can have a different shape, such as an ellipse, a square, a rectangle, or another shape suitable for the application. The heat insulator 52 connects the feed cap 54 to one of the furnaces 48. The heat insulator 52 can reduce heat transfer from the relatively hot furnace 48 to the relatively cold feed cap 54. The heat insulator 52 can be made of polyfluorene or another material having a relatively low thermal conductivity. In an alternative embodiment, the heat insulator 52 can be omitted and the feed cap 54 can be coupled to the furnace 48 either directly or via another suitable mechanism.

A feed cap 54 is used for one of the furnace 48 and the melting system 30, the cover Connected to the top of one of the furnaces 48. In one embodiment, the feed cap 54 can be made of a polymeric material. In an alternative embodiment, the feed cap 54 can be made of another material, such as a metal. The feed cap 54 includes a cap top 64 and a cap side 66. In the illustrated embodiment, the cap side portion 66 is substantially cylindrical and the cap top portion 64 has a substantially circular shape when viewed from above. The feed cap 54 may have a shape similar to the shape of the furnace 48, or may have a shape different from the shape of the furnace 48.

Feed inlet 68 is positioned on cap top 64 and includes an inward projection 70 that extends downwardly from cap top 64. Feed inlet 68 is passed through one of the holes in the top 64 of the cap and is connected to feed hose 26 for receiving one of the binder pellets and air supplied by feed assembly 22 (shown in Figure 1). Feed assembly 22 is used to feed one of the feed systems for the supply of binder pellets from container 20 (shown in Figure 1). The feed hose 26 extends into the inward projection 70 of the feed inlet 68. The cap side portion 66 of the feed cap 54 includes a plurality of windows 74 that allow the air carrying the pellets to vent to the atmosphere as the binder pellets fall from the projection 70 into the furnace 48.

The sensor connector 72 is positioned on the cap top 64 and is coupled to the sensor tower 56 and the level sensor 58. The sensor tower 56 connects the level sensor 58 to the feed cap 54 to cause the level sensor 58 to aim toward the top of one of the furnaces 48. In the illustrated embodiment, the level sensor 58 is used to sense one of the levels of the binder pellets in the furnace 48. In an alternative embodiment, the level sensor 58 may be another type of sensor suitable for the application, such as an optical sensor.

In Figure 2B, an exploded view of one of the melting systems 30 is shown. More specifically, The components of the melting system 30 have been separated along the linear stacking axis 74. In general, the furnace 48, the plate 86 and the cassette heater 82 are releasably attached to the base 46; the furnace 48 and the feed cap 54 are releasably attached to the insulator 52; and the band heater 50 and The cassette heater 82 is releasably attached to the furnace 48. In this sense, "releasably attached" indicates that two or more components are attachable and detachable without permanent physical modification of any component. Two non-limiting examples of releasable attachments include hand pushing to one of the apertures of one of the other components and fastening to one of the other components using a threaded fastener.

In the illustrated embodiment, the stacking shaft 74 begins at the base 46 and extends upward. The base 46 has a plurality of internal reliefs including a heater bore 76, a recess 78 and a peripheral edge 80. More specifically, the heater bore 76 is threaded through the base 46 and concentric with the stacking shaft 74 and extending along one of the stacking shafts 74. The groove 78, which will be further discussed with reference to Figures 4-6, is located above the heater bore 76. The rim 80 is located above the groove 78, which has a shallow disc shape that is concentric with the stacking axis 74 and extends along the stacking axis 74. A heater bore 76 is used to attach the cassette heater 82 within the base 46. The cassette heater 82 is used to heat one of the electric resistance heating elements of the furnace 48 in the form of a rod, and more particularly, the cassette heater 82 includes an aluminum heat housing having an electric charge inside the housing. The heater is stuck. The rim 80 is used to position the furnace 48 within the base 46. In particular, the rim 84 of the furnace 48 interfaces with the rim 80 when the furnace is adjacent to the base 46.

To assemble the illustrated embodiment of the melting system 30, the cassette heater 82 is moved along the stacking axis 74 toward the base 46 and screwed to the heater bore Until the cassette heater 82 is fully seated in the base 46. The cassette heater 82 is electrically coupled to the controller 18 (shown in Figure 1) for operability purposes. Then, the furnace 48 is moved downward along the stacking shaft 74, and the cassette heater 82 is inserted into the cassette hole 83. The furnace 48 is moved further downward until the rim 84 seats in the periphery 80 of the base 46. A plate 86 having an orifice greater than one of the furnaces 48 is then placed over the furnace 48 and the plate 86 is moved down the stacking axis 74. The plate 86 is then secured to the base 46 by a plurality of bolts 88 to trap the furnace 48 between the rim 80 and the plate 86. Furnace 48 remains trapped because the orifice in plate 86 is smaller than the outer diameter of rim 84 (as shown later in Figure 5). The band heater 50 is then placed around the furnace 48, secured by the latch 51 and electrically coupled to the controller 18 (shown in Figure 1). If the assembly process is stopped at this time, this is the degree of assembly of the melting system 30 shown in Figures 3, 4 and 6.

To complete the assembly of the melt system 30, the heat insulator 52 is placed at the top of the furnace 48 and the heat insulator 52 is moved down the stacking shaft 74 until it is seated. Finally, the feed cap 54 is moved along the stacking axis 74 such that the feed cap 54 is seated within the insulator 52.

In the illustrated embodiment, the components of the melting system 30 can be separated along the stacking axis 74. Once all of the components in the assembly of the melting system 30 are assembled and nested together, the melting system 30 extends along the stacking axis 74 and is generally coaxial with the stacking shaft 74. This is primarily due to the components of the melting system 30 (or features thereof) (specifically, the heater bore 76, the peripheral edge 80, the heater cassette 82, the furnace 48, the band heater 50, the heat insulator 52, and the feed cap The lid 54) has a generally cylindrical shape.

The components and configuration of the melting system 30 allow the furnace 48 to be releasably attached to the base 46, the band heater 50, and the cassette heater 82. This permits the furnace 48 to be replaced in the event that the furnace 48 requires cleaning or if the system 10 (shown in Figure 1) needs to be changed to operate a different binder material. When this replacement of the furnace 48 occurs, any remaining binder in the furnace 48 can be retained for later use. Additionally, the band heater 50 and the cassette heater 82 are releasably attached to the base 46 and/or the furnace 48. This permits replacement of such components in the event of a failure in either of the band heater 50 and the cassette heater 82.

An embodiment of an alternative embodiment of the present invention is illustrated in Figure 2B. For example, not all of the components of the assembly of the melt system 30 need to be coaxial with the stacking shaft 74 or have the characteristics of being coaxial with the stacking shaft 74. For another example, the furnace 48 can be attached to the base 46 using alternative components and features, such as one of the external threads on the furnace 48 and one of the internal threads in the base 46. For yet another example, the melting system 30 can have at least two furnaces 48 coupled to a base 46, with each furnace 48 having its own feed cap 54. This juxtaposition of the furnace 48 allows for a larger output rate of one of the binder materials. For yet another example, the melting system 30 can have at least two furnaces 48 stacked one on top of the other, with only one furnace 48 attached to the base 46 and only one furnace 48 attached to the feed cap 54. In this series configuration, the total volume of the molten adhesive material is increased to allow for a very short string of unsustainable output rates (as long as there is sufficient recovery time at a low output rate) .

In FIG. 3, a perspective view of a partially assembled melt system 30 including a furnace 48 is shown. Furnace 48 is defined with an interior body that contains The chamber 90 is located at the upper end of the interior of the furnace 48. In the illustrated embodiment, chamber 90 is used to receive one of the cylindrical volumes of pellets (shown later in Figure 5). A divider 92 (i.e., a wall defining a plurality of channels 94) is located below the chamber 90. In this embodiment, the divider 92 includes a solid cylindrical body of a plurality of cylindrical passages 94. Each channel 94 is fluidly coupled to chamber 90 and extends downwardly through furnace 48, wherein the height of each channel 94 is greater than the width of each channel 94. When compared to a hollow cylinder, the divider 92 subdivides the furnace 48 to increase the surface area to volume ratio. More specifically, the separator 92 as shown in Figure 3 has a surface area to volume ratio of 4.59 which is about four times larger than a hollow cylinder of the same size. This increased surface area to volume ratio enhances the heat exchange between the furnace 48 and the binder in both solid (pellet) and liquid states. Additionally, the volume of chamber 90 is about the same as the volume within passage 94.

The cassette heater 82 is in contact with the furnace 48 for conducting heat from the cassette heater 82 to the furnace 48. The heat from the cassette heater 82 on the inside of the furnace 48, together with the heat from the belt heater 50 on the outside of the furnace 48, spreads throughout the furnace 48 because the furnace 48 is made of a thermally conductive material. In the illustrated embodiment, the furnace 48 is constructed of an aluminum alloy material. This configuration provides a substantially homogeneous temperature throughout the furnace 48.

The components and configuration of the melting system 30 allow the furnace 48 to heat up quickly and evenly. In the illustrated embodiment, the furnace 48 and any material it can contain can be heated to a sufficient operating temperature in about ten minutes. Additionally, this heating is achieved without contacting the ribbon heater 50 with the adhesive (shown in Figure 5).

An embodiment of an alternative embodiment of the present invention is illustrated in FIG. For example, the furnace 48 can be made larger or smaller. In this embodiment, the absolute size of the channel 94 may not substantially change. Thus, if the furnace 48 is enlarged, the relative size of the passages 94 can be reduced, and if the furnace 48 is reduced, the relative size of the passages 94 can be increased. For another example, the shape of each channel 94 can be any suitable shape other than the shape of a cylinder.

In FIG. 4, a top view of a partially assembled melt system 30 including a furnace 48 is shown. In the illustrated embodiment, each channel 94 extends substantially perpendicularly, and thus each channel 94 is substantially parallel to the other channels 94. The groove 78 is located directly below the channel 94 (shown in Figure 2B). The groove 78 is indirectly fluidly coupled to a plurality of channels 94 (as discussed further with respect to FIG. 5).

In the illustrated embodiment, there is a solid portion of the furnace 48 in which the passage 94 is absent. There are a plurality of sensors 埠 96 here (although only one sensor in the phantom in Figure 4 is visible). The sensor 埠 96 permits measurement of the temperature of the divider 92. This information can be used to approximate the temperature inside the channel 94.

In Figure 5, a cross-sectional view of the melting system 30 taken along line 5-5 of Figure 4 is shown. In the illustrated embodiment, the furnace 48 includes three sensors 埠96. Although FIG. 5 shows only one temperature sensor 98 located in the lowermost sensor 埠 96, the temperature sensor 98 can be placed to a different sensor 埠 96 as desired, or an additional temperature sensor 98 can be employed. .

As previously described, chamber 90 is located at the top of furnace 48 for receiving pellets 102, and passage 94 is fluidly coupled to chamber 90 and extends downwardly from chamber 90. The collector 100 is located at the bottom end of the passage 94. In the illustrated embodiment The collector 100 is a generally cylindrical volume that is positioned for receiving molten liquid 104 from the passage 94. In addition, the collector 100 surrounds the latching hole 83 and is co-axial with one of the latching holes 83. The collector 100 is also fluidly coupled to the recess 78 of the base 46 on the bottom side. The groove 78 is also a generally cylindrical volume, but the outlet 62 is cut into the rear side of the groove 78 such that the groove 78 is in fluid connection with the outlet 62.

During operation of the melt system 30 as part of the system 10 (shown in Figure 1), the pellets 102 are fed from the vessel 20 together with the compressed air by the feed assembly 22 (shown in Figure 1) (Figure 1 Shown) is fed through feed hose 26 and through feed inlet 68 of feed cap 54. The pellets 102 are dropped by gravity into the furnace 48 and are substantially evenly distributed in the chamber 90.

The pellets 102 are then liquefied by a furnace 48. More specifically, the furnace 48 is heated by the band heater 50 and the heater cassette 82 to melt the pellets 102 into a molten liquid 104. The molten liquid 104 has a molten level 106 that is proximate to the top 93 of the separator (and thus the top end of the passage 94). The molten liquid 104 flows from the chamber 90 through the passage 94 and into the collector 100. The molten liquid flows from the collector 100 through the groove 78 and into the base outlet 62. The molten liquid 104 is then pumped into a pump 32 (shown in Figure 1) and pumped to a dispenser 34 (shown in Figure 1) for supply, which may be used, for example, for bonding packages, boxes. Or other items.

In the illustrated embodiment, the sensor beam 108 extends from the level sensor 58 toward the melt level 106 in the chamber 90. In an embodiment where the level sensor 58 is an ultrasonic sensor, the sensor beam 108 is an ultrasonic pulse beam. The feed level sensor 58 travels to the melt level 106 and returns The time back to the level sensor 58 is indicative of one of the distances between the level sensor 58 (whose position is known) and the melt level 106. The level sensor 58 sends the fill level data to the controller 18 and can then use the data to determine if the melt system 30 has a sufficient amount of molten liquid 104 or whether additional pellets 102 should be added.

During operation of the melt system 30, the melt level 106 is maintained within a range of no more than one-five percent of the height of the separator 92 when compared to the length of the separator 92. In the illustrated embodiment, the divider 92 is 10.2 cm (4 inches) high, so the molten level 106 is maintained within a range of 2.54 cm (1 inch), which is 0.635 higher than the top 93 of the divider. Start at its lowest point at cm (0.25 inches). In addition, this range is greater than 0.635 cm (0.25 inch) from the upper end of the separator 92, so although the volume ratio of the chamber 90 to the separator 92 is about 1:1, it is not utilized during normal operation of the melting system 30. The volume of the chamber 90 is all.

The melt system 30 is also turned off when the system 10 (shown in Figure 1) is turned off. More specifically, the band heater 50 and the cassette heater 82 are no longer supplied with electric power. The molten liquid 104 solidifies in the furnace 48 and the base 46 as the melting system 30 cools to ambient temperature. The furnace 48 can then be replaced with a different furnace 48. For example, this would be desirable if a different material would be used at the next operating system 10. Otherwise, it will be necessary to melt the material solidified around the furnace 48 and remove it through the outlet 44 (shown in Figure 1).

If the furnace 48 is not replaced, the material solidified around the furnace 48 is melted by the heat supplied to the furnace 48 by the belt heater 50 and the cassette heater 82. Due to the high surface area to volume ratio of the separator 92, the material in the channel 94 is fast Melt. In the illustrated embodiment, the time from cold start to full play is as short as ten minutes. Additionally, furnace 48 may melt a plurality of pellets 102 due to rapid thermal transfer between heaters 50, 82 and molten liquid 104.

In Figure 6, a cross-sectional view of the melting system 30 taken along line 6-6 of Figure 4 is shown. As previously described, the base outlet 62 is fluidly coupled to the recess 78. In the illustrated embodiment, the base outlet 62 has a generally cylindrical shape and is fluidly coupled at one end to a pump 32 (shown in Figure 1). Plug 108 is located at the other end of base outlet 62. The base heater 63 is located below the base outlet 62. The base heater 63 extends substantially along the entire length of the base outlet 62. This allows the cured material in the base 46 to be heated during startup and operation of the melting system 30.

While the invention has been described with reference to the embodiments of the invention, it will be understood by those skilled in the art In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention. Therefore, the invention is not intended to be limited to the specific embodiments disclosed, but the invention is intended to cover all embodiments within the scope of the appended claims.

10‧‧‧System

12‧‧‧ Cold section

14‧‧‧hot section

16‧‧‧Air source

17‧‧‧Air control valve

18‧‧‧ Controller

20‧‧‧ container

22‧‧‧Feed assembly

24‧‧‧vacuum assembly

26‧‧‧feed hose

28‧‧‧ Entrance

30‧‧‧Melt system

32‧‧‧ pump

34‧‧‧ dispenser

35A‧‧‧Air hose

35B‧‧ Air hose

35C‧‧‧Air hose

35D‧‧‧Air hose

36‧‧‧Motor

38‧‧‧Supply hose

40‧‧‧Management

42‧‧‧Material module

44‧‧‧Export

46‧‧‧Base

48‧‧‧furnace

50‧‧‧Band heater/heater

51‧‧‧Latch

52‧‧‧Insulator

54‧‧‧Feed cap

56‧‧‧Sensor Tower

58‧‧‧Material Sensor

60‧‧‧Bolt holes

62‧‧‧Base exit/export

63‧‧‧Base heater

64‧‧‧Cap top

66‧‧‧The side of the cap

68‧‧‧ Feed inlet

70‧‧‧Inward projections/protrusions

72‧‧‧Sensor connector

74‧‧‧Window/Linear Stacking Shaft/Stacking Shaft

76‧‧‧ heater bore

78‧‧‧ Groove

80‧‧‧ rim

82‧‧‧Carn heater/heater cassette/heater

83‧‧‧ 卡匣镗孔

84‧‧‧ rim

86‧‧‧ board

88‧‧‧Bolts

Room 90‧‧‧

92‧‧‧ separator

93‧‧‧Top of the divider

94‧‧‧ channel

96‧‧‧Sensor 最/lowest sensor埠

98‧‧‧Temperature Sensor

100‧‧‧ Collector

102‧‧‧ pellets

104‧‧‧ molten liquid

106‧‧‧Fuse level

108‧‧‧Sensor beam/plug

Figure 1 is a schematic illustration of one of the systems for dispensing a hot melt adhesive.

Figure 2A is a side view of a melting system.

Figure 2B is an exploded view of the melting system.

Figure 3 is a perspective view of a partially assembled melt system comprising one of the furnaces.

Figure 4 is a top plan view of a partially assembled melt system comprising a furnace.

Figure 5 is a cross-sectional view of the melting system taken along line 5-5 of Figure 4.

Figure 6 is a cross-sectional view of the melting system taken along line 6-6 of Figure 4.

30‧‧‧Melt system

46‧‧‧Base

48‧‧‧furnace

50‧‧‧Band heater/heater

51‧‧‧Latch

52‧‧‧Insulator

54‧‧‧Feed cap

56‧‧‧Sensor Tower

74‧‧‧Window/Linear Stacking Shaft/Stacking Shaft

76‧‧‧ heater bore

78‧‧‧ Groove

80‧‧‧ rim

82‧‧‧Carn heater/heater cassette/heater

83‧‧‧ 卡匣镗孔

84‧‧‧ rim

86‧‧‧ board

88‧‧‧Bolts

Claims (20)

A hot melt system comprising: a base defining a recess and having an outlet connected to the recess; a furnace located above the base, the furnace having an upper end for receiving one of the hot molten pellets And adjacent to a lower end of the recess such that hot molten liquid can flow from the furnace through the recess to the outlet; and a first heater attached to at least one of the base and the furnace; Wherein the furnace is releasably attached to at least one of the base and the first heater. The system of claim 1 wherein the furnace is releasably attached to the base and the first heater. The system of claim 2, and further comprising: a disc-shaped rim located in the base; and a rim located at the lower end of the furnace; wherein when the furnace is attached to the base, The rim contacts the rim. The system of claim 1, and further comprising: a second heater releasably attached to an exterior of the furnace; wherein the first heater is releasably attached to the base. The system of claim 4, wherein the second heater is circumferentially positioned about the exterior of the furnace. The system of claim 1, wherein the first heater is positioned in a heater bore in the base below the recess. The system of claim 6, wherein the first heater is positioned in one of the grommets of the furnace, the ferrule being coaxial with the heater bore. The system of claim 1, and further comprising: a plate secured to the top of one of the bases; wherein a rim on the lower end of the furnace is positioned between the plate and the base. The system of claim 1, and further comprising: a container for storing hot molten pellets; a feed system for conveying hot molten pellets from the container to the melting system; and a dispensing system It is used to transport liquefied hot molten pellets from the melting system. A hot melt system comprising: a base having an outlet for a hot melt liquid; a furnace located above the base, the furnace having an upper end and a lower end for receiving hot molten pellets Having a hot melt liquid flowing from the furnace to the outlet; and a first heater releasably attached to at least one of the base and the furnace. The system of claim 10, wherein the furnace is releasably attached to the base and the first heater. The system of claim 11, wherein the first heater is positioned in a heater bore in the base below the recess and coaxial with the heater bore. The system of claim 12, wherein the first heater is positioned in one of the cassette bores, the latch aperture being coaxial with the heater bore. The system of claim 10, and further comprising: a second heater releasably attached to an exterior of the furnace; wherein the first heater is releasably attached to the base. A system of claim 13 wherein the second heater is circumferentially positioned about the furnace. The system of claim 10, and further comprising: a disc-shaped rim located in the base; and a rim located at the lower end of the furnace; wherein when the furnace is attached to the base, The rim contacts the rim. The system of claim 10, and further comprising: a container for storing hot molten pellets; a feed system for conveying hot molten pellets from the container to the melting system; and a dispensing system It is used to transport liquefied hot molten pellets from the melting system. An assembly method for a system, the method comprising: attaching a releasably attached furnace to a base such that the furnace contacts an upper end of the base and extends along a stacking axis of the system; A releasably attachable first heater is coupled to at least one of the base and the furnace, the first heater being coaxial with the stacking axis of the system. The method of claim 18, wherein the releasably attached furnace package is connected Included: a plate is fastened to the base such that one of the rims of the furnace is trapped between the plate and the base. The method of claim 18, and further comprising: attaching a releasably attachable second heater to one of the furnaces such that the second heater is coaxial with the stacking axis; and connecting the first A heater includes connecting the first heater to one of the bores in the base.