Abstract:
A metering pump or segment (100), and a metering pump assembly comprising a plurality of the metering pumps or segments (100), are disclosed. The drive shaft assembly (336) for driving the pump gears (112,114) of each metering pump or segment (100) is coaxially aligned with the longitudinal axis (A) of the pump or segment (100), as is the fluid inlet supply path, whereby only three gears (342,114,116) are required to comprise each metering pump or segment (100). The single drive shaft assembly (336) is utilized to drive all of the metering pumps or segments (100) comprising the metering pump assembly (300), and the different metering pumps or segments (100) are fluidically connected together by means of a common fluid passageway (350). In addition, the different metering pumps or segments (100) can be interchanged or exchanged so as to permit different metered fluid output volumes to be outputted at different predetermined locations.
Abstract:
Α hot melt adhesive metering pump assembly, and an integral reservoir tank fluidically connected thereto and the hot melt adhesive metering pump assembly comprises a plurality of rotary, gear-type metering pumps which are arranged in a compact, longitudinally spaced manner upon a drive gear manifold. All of the driven gears of pumps are respectively driven by manifold pump drive gears which are rotatably mounted upon a common motor-driven rotary drive shaft rotatably disposed within the drive gear manifold, and a first side wall member of a base portion of the reservoir tank is integrally connected to a side wall portion of the drive gear manifold, while a second side wall member of the base portion of the reservoir tank is provided with a plurality of hose connections to which hot melt adhesive delivery hoses are to be connected so as to respectively convey the precisely metered amounts of the hot melt adhesive material toward the applicator heads .
Abstract:
A method of making an article having a substrate and two materials applied thereto includes providing a metered fluid dispensing system (100) having first and second supply sources for supplying first and second fluids, respectively, an output device (110) having at least one dispensing nozzle and at least two pumps (104, 106). The dispensing system is configured to selectively control the passage of the first and second fluids. The substrate (154) is conveyed past the fluid dispensing system in a machine direction and the first, or second, or first and second fluids are applied to the substrate in a plurality of segments, each segment having a volume per unit length and applied in a length in the machine direction to define a pattern, and in which wherein the pattern includes at least some areas in which the first or second fluid is present without the other fluid.
Abstract:
A modular system (100), for delivering hot melt adhesive materials, comprises a modular metering assembly (104), having metering stations disposed therein, that is able to be attachably and detachably mounted upon a modular tank assembly (102). Alternatively, one or more of the metering stations may be disposed externally of the modular metering assembly, and alternatively still further, one or more additional modular metering assemblies may be attachably and detachably connected to the first modular metering assembly. Also disclosed is a closed-loop fluid pressure control system, for independently controlling the pressure of the hot melt adhesive material being conveyed to the metering devices, whereby the working pressures of the hot melt adhesive materials being conveyed to the metering devices can have different working pressures.
Abstract:
A dual, variable volume hot melt adhesive dispensing nozzle or die assembly is provided with a pair of choke slots (194, 208) within a first fluid control plate (166). The provision of the choke slots within the first fluid control plate effectively restricts and retards the flow of the fluid through such choke slots whereby volumes of the fluids are effectively built up and stored upstream of the choke slots so as to effectively delay the reaction of pressure spikes upon the fluid flows under both positive and negative conditions. This buildup in pressure and volume is then dispensed over time so as to cause the fluid flow to smoothly transition between positive and negative spiked fluid flow conditions and normal fluid flow conditions. Accordingly, the pressure spikes do not adversely affect the resulting fluid flows whereby, for example, under conventional negative pressure spike conditions, gaps in the dispensed hot melt adhesive would otherwise occur.
Abstract:
A modular system (100), for delivering hot melt adhesive or other thermoplastic materials, comprises a modular metering assembly (104), having a plurality of metering stations disposed therein, which is able to be attachably and detachably mounted upon a modular tank (102) or supply assembly. Alternative-ly, one or more of the plurality of metering stations may be disposed externally of the modular metering assembly, and alternatively still further, one or more additional modular metering assemblies may be attachably and detachably connect-ed to the first modular metering assembly. In this manner, the entire modular system exhibits enhanced versatility and flexibility in order to effectively implement different material application procedures that may be required by means of a particular end-user customer.
Abstract:
A new and improved remote, hot melt adhesive metering station (510) , for supplying predetermined or precisely metered volumes of hot melt adhesive material toward applicator head or dispensing nozzle structures, comprises a plurality of rotary, gear-type metering pumps (518) which are arranged in a compact, longitudinally spaced manner upon an axially elongated drive gear manifold (512) such that the rotational axes of the plurality of rotary, gear-type metering pumps (518) are disposed parallel and adjacent to one side of the axially elongated drive gear manifold (512) . Hot melt adhesive material is supplied from a remotely located adhesive supply unit (ASU) , to the drive gear manifold (512) , by an inlet supply port hose connection (542) , and all of the pump driven gears (524) of the plurality of rotary, gear- type metering pumps (518) are respectively driven by manifold pump drive gears (514) which are all rotatably mounted upon a common, motor-driven drive shaft (516) rotatably disposed within the drive gear manifold (512) . The drive gear manifold (512) is also provided with a plurality of outlet port hose connections (540) to which hot melt adhesive delivery hoses are to be connected.
Abstract:
A dispensing system (10) for dispensing fluid onto a substrate includes a manifold (14) having internal passageways for fluid flow and one or more driving gears, a drive arm (12) mounted on the manifold, the drive arm movable between first and second positions, and having a drive motor (24) configured to drive the one or more drive gears. The system further includes one or more pump assemblies (16) mounted on a top surface of the manifold, each pump assembly formed as a rotary gear pump having a gear train including two gears. One of the gears is disposed in meshed relationship with a respective drive gear of the one or more drive gears. The system also includes a filter block for filtering the fluid, one or more nozzles for dispensing the fluid onto the substrate, an applicator or nozzle adapter, and one or more valve assemblies for controlling flow of the fluid to the one or more nozzles.
Abstract:
A fluid application device for applying fluid to a strand of material, a slot die applicator and a guide form for the fluid application device are provided. The fluid application device includes an applicator head and a slot die applicator secured to the applicator head configured to discharge the fluid onto the strand of material. The slot die applicator includes the guide form. The guide form includes a guide slot configured to receive the strand of material. The guide slot includes a strand inlet, a strand outlet and a positioning section between the strand inlet and strand outlet. A transverse dimension of the positioning section decreases along a direction from the strand inlet to the strand outlet.
Abstract:
A fluid delivery device is provided. The fluid delivery device includes a melter having a loading chamber and a hopper disposed in communication with the loading chamber, the loading chamber having one or more heating elements. The hopper includes a second heating element. The melter also includes a container handling system for lifting a container a predetermined height and moving the container from a position remote of the melter to a position within the loading chamber. The container includes contents stored within. The heating elements heat the contents so that the contents may be received in the hopper. The hopper may continue to heat the contents to provide a fluid. The fluid may be discharged from the hopper by way of a pump assembly. A pressure of fluid may be regulated at the pump assembly.