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Dispense tip cleaning apparatus

A technology for dispensing tips and cleaning equipment, applied in the directions of cleaning hollow objects, cleaning methods and utensils, cleaning methods using liquids, etc., and can solve problems such as frequent maintenance and adjustment

Inactive Publication Date: 2015-12-16
HENKEL IP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many existing methods for repeatedly cleaning dispensing tips in automated operations require frequent maintenance as well as frequent adjustments

Method used

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  • Dispense tip cleaning apparatus
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  • Dispense tip cleaning apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0076] For this example, three comparative tests were carried out utilizing: (1) the dispensing tip cleaning device of the present invention; (2) the dispensing tip without any cleaning; and (3) the dispensing tip after each use. Dispensing tip needle wiped by hand with a sponge. Prior to conducting each test, the dispense tips and lines were decontaminated and cleaned to remove adhesive and any residue that might interfere with the operation of the dispense tips. For each method tested, multiple beads of adhesive were dispensed onto a plate. The "starts of lines" are visually contrasted for repeatability and consistency.

[0077] Figures 15A to 15C Shown is a cleaning device employing the present invention ( Figure 15A ), no cleaning device ( Figure 15B ) and manually wipe the needle after each use ( Figure 15C ) adhesive comparison test results. The end of the adhesive line is at the Figures 16A to 16C shown in more detail in , which correspond to Figures 15A t...

example 2

[0079] For this example, a test of needle accumulation over time was performed. Each test compared the amount of adhesive build-up on the dispensing needle when the dispensing tip cleaning device of the present invention was in use compared to when it was not in use. Dispensing tips and lines were cleaned as described in Example 1. Dispensing was set to repeat the purge, and the needle tip was monitored over time. The "no clean" test has a 5 second purge and a 5 second wait. The test with the cleaning device of the present invention had a 5 second purge, a 2 second clean and a 3 second wait. It was observed that the "no purge" test had build-up over time and resulted in an increasingly larger and wider dispensing contact area on the substrate over time (from T=0 to 60 minutes). In contrast, tests employing the cleaning device of the present invention had substantially the same level of cleaning over time (from T=0 to 60 minutes).

[0080] Figures 17A to 17D Images of "no...

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PUM

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Abstract

A dispense tip cleaning apparatus that includes a cannular plate, a hub plate, a needle hub locator, a dispense tip and a retainer.

Description

technical field [0001] The present invention relates to apparatus for cleaning dispensing tips for applying adhesive material to a surface. In particular, the present invention relates to apparatus for the continuous cleaning of dispensing tips / needles that precisely and repeatedly apply predetermined volumes of adhesive material to a surface in an automated process. Background technique [0002] Dispensing adhesive onto a surface with a dispensing nozzle is difficult due to the properties of the adhesive, especially the low viscosity and the tendency of the adhesive to solidify on / in the tip of the nozzle. Over time, the build-up of cured adhesive on the tip of the nozzle affects the dispensing operation and causes reduced amounts of adhesive to deposit on the surface. Various measures have been taken to remove the build-up of cured adhesive on the tip of the dispensing nozzle, but none of them solve this problem. [0003] Some prior art methods employ a sponge, cloth, or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B3/04B08B9/027
CPCB08B5/00B08B5/02B08B9/021B08B2205/005B05B15/555
Inventor J·布劳尔特K·加布里埃尔森
Owner HENKEL IP