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Apparatus for dispensing liquid material

A technology for liquid materials and equipment, applied in the field of equipment for distributing liquid materials to substrates, can solve problems such as circumferential current delay magnetic field dissipation

Inactive Publication Date: 2012-12-26
NORDSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Circumferential current delays magnetic field dissipation

Method used

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  • Apparatus for dispensing liquid material
  • Apparatus for dispensing liquid material
  • Apparatus for dispensing liquid material

Examples

Experimental program
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Embodiment Construction

[0036] For purposes of the present discussion, the methods and apparatus of the present invention are described in connection with dispensing liquid materials. Such materials include hot melt polymeric materials used in bonding applications. Hot melt materials are generally solid at room temperature, but transform into a liquid state when heated. It should be understood that the method and apparatus of the present invention are considered equally applicable to dispensing other heated fluid materials such as waxes and those adhesives that are normally liquid at room or ambient temperature and therefore do not require heating and are sometimes referred to as cold glues .

[0037] The following definitions apply to this specification, including the claims, wherein "axial" and "axially" are used herein to refer to a line or direction substantially parallel to the axis of reciprocation of the dispenser plunger. "Radial" and "radially" are used to mean directions radially toward o...

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PUM

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Abstract

The invention relates to a method and an apparatus for dispensing liquid material to a substrate comprising a housing (10) having a bore (12) and an inlet (18) for supplying liquid material from a material source to the bore (12), a nozzle (24) communicating with the inlet (18), the nozzle (24) having a discharge opening (26) for dispensing the liquid material, a movable plunger (28) mounted for reciprocal movement between a closed and an open position, wherein in the open position, liquid material is dispensed from the discharge opening (26) and in the closed position, liquid material is prevented from being dispensed from the discharge opening (26), and actuation means for moving the plunger (28) between the closed and the open position. According to the invention the plunger (28) has at least one slot (46) essentially extending from the outer periphery to essentially the centre of the plunger.

Description

technical field [0001] The present invention relates to an apparatus for dispensing a liquid material to a substrate, comprising: a housing having a hole and an inlet for supplying the hole with a liquid material from a source of material; a nozzle in communication with the inlet, the nozzle having a A discharge port for dispensing liquid material; a movable plunger mounted for reciprocating movement between a closed position and an open position in which the liquid material is dispensed from the discharge port and in the closed position which prevents the liquid material from being discharged The port is dispensed; and an actuator for moving the plunger between the closed and open positions. Background technique [0002] This type of fluid dispenser is used to dispense fluid materials such as adhesives, sealants, hot melt adhesives, and the like. More specifically, the invention relates to electromagnetically actuated dispensing devices, also known as electron guns. Typic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B1/32B05B12/00B05C5/02B05D1/26
CPCB05C5/0225B05B1/3053
Inventor 维克托·德·莱乌
Owner NORDSON CORP
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