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Power management for hot melt distribution systems

An electric and hot-melting technology, applied in electric heating devices, distribution devices, liquid distribution, etc., can solve problems such as increasing the carbonization of adhesives or blackening

Active Publication Date: 2017-08-25
GRACO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extended time required to melt the pellets in these tanks increases the likelihood of "charring" or blackening of the binder due to prolonged heat exposure

Method used

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  • Power management for hot melt distribution systems
  • Power management for hot melt distribution systems
  • Power management for hot melt distribution systems

Examples

Experimental program
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Embodiment Construction

[0008] figure 1 is a schematic illustration of system 10, which is a system for dispensing hot melt adhesives. System 10 includes cold section 12 , hot section 14 , air source 16 , air control valve 17 and controller 18 . exist figure 1 In the illustrated embodiment, cold section 12 includes vessel 20 and feed assembly 22 including vacuum assembly 24 , feed tube 26 and inlet 28 . exist figure 1 In the illustrated embodiment, hot section 14 includes melting system 30 , pump 32 and dispenser 34 . Air source 16 is a source of compressed air supplied to components in both cold leg 12 and hot leg 14 of system 10 . Air control valve 17 is connected to air source 16 via air tube 35A and selectively controls air flow from air source 16 through air tube 35B to vacuum assembly 24 and through air tube 35C to motor 36 of pump 32 . Air tube 35D connects air source 16 to distributor 34 bypassing air control valve 17 . Controller 18 is communicatively coupled with various components of...

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PUM

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Abstract

Heating of the hot melt adhesive in a hot melt dispensing system is provided by heaters distributed in multiple zones of the system. A controller receives input power and distributes power to the heaters in a time-division manner. The controller is based on the total current target, temperature set point, current draw of each of the heaters and stored priority criteria such as zone heating priority, history of each heater's on and off periods, and The distance from the temperature set point that power is delivered to the heater.

Description

technical field [0001] The present disclosure generally relates to systems for dispensing hot melt adhesives. More specifically, the present disclosure relates to power management for hot melt dispensing systems. Background technique [0002] Hot melt dispensing systems are typically used in manufacturing assembly lines to automatically dispense adhesives used in the construction of packaging materials such as boxes, cartons, and the like. Hot melt dispensing systems traditionally include material tanks, heating elements, pumps and dispensers. Solid polymer pellets are melted in a tank using a heating element before being supplied by a pump to a dispenser. Because the molten pellets re-solidify into a solid form when allowed to cool, the molten pellets must maintain temperature during their journey from the tank to the dispenser. This typically requires placing heating elements in the tanks, pumps and dispensers and heating any pipes or tubing connecting those components....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B7/16B05C5/04
CPCH05B1/0244B67D99/00H05B1/0225
Inventor 马克·J·布鲁德沃尔德
Owner GRACO INC