Methods and devices for jetting viscous medium on workpieces

Patent metadata

Field	Value
Publication number	US-2016368014-A1
Application number	US-201615254113-A
Country	US
Kind code	A1
Filing date	Sep 1, 2016
Priority date	Mar 15, 2013
Publication date	Dec 22, 2016
Grant date	—

Abstract

An apparatus for depositing and/or jetting viscous medium on a surface of a workpiece includes at least two depositing head assemblies. The at least two depositing head assemblies are configured to move in three dimensional space. The at least two depositing head assemblies are also configured to at least one of concurrently and simultaneously deposit the viscous medium on the workpiece.

First claim

1 . An apparatus for depositing and/or jetting viscous medium on a surface of a workpiece, the apparatus comprising:
at least two depositing head assemblies, wherein the at least two depositing head assemblies include at least one jetting head assembly, or ejector, configured to perform jet printing of viscous medium.

2 . The apparatus of claim 1 , wherein the at least one jetting head assembly, or ejector, comprises:
an impacting device configured to rapidly build up a pressure impulse in a fluid chamber by rapid movement of the impacting device towards the fluid chamber, thereby forcing droplets of the viscous medium through a nozzle of the ejector.

3 . The apparatus of claim 2 , wherein the impacting device includes and/or is controlled by a piezoelectric actuator.

4 . The apparatus of claim 1 , wherein the at least two depositing head assemblies are configured to move in three dimensional space, and configured to at least one of concurrently and simultaneously jet or deposit the viscous medium on the workpiece.

5 . The apparatus of claim 4 , wherein the at least two depositing head assemblies include at least two jetting head assemblies, wherein the at least two jetting head assemblies are configured to jet droplets of viscous medium on the workpiece, and to move in three dimensions at least one of concurrently and simultaneously.

6 . The apparatus of claim 1 , further comprising:
a platform configured to hold the workpiece; a first beam arranged above the platform, a first of the at least two depositing head assemblies being movably fixed to the first beam; and a second beam arranged above the platform and in parallel with the first beam, a second of the at least two depositing head assemblies being movably fixed to the second beam.

7 . The apparatus of claim 6 , wherein the first depositing head assembly is configured to move along the first beam in a first direction, and the second depositing head assembly is configured to move along the second beam in the first direction.

8 . The apparatus of claim 7 , wherein the first and second beams are configured to move in a second direction, which is perpendicular to the first direction.

9 . The apparatus of claim 8 , wherein the first and second beams and the at least two depositing head assemblies are configured to move at least one of simultaneously and concurrently.

10 . The apparatus of claim 9 , wherein the first and second depositing head assemblies are configured to move in a third direction, which is perpendicular to the first and second directions.

11 . The apparatus of claim 1 , further comprising:
a platform configured to hold the workpiece; and a beam arranged above the platform, the at least two depositing head assemblies being movably fixed to the beam.

12 . The apparatus of claim 11 , wherein the at least two depositing head assemblies are configured to move along the beam in a first direction.

13 . The apparatus of claim 11 , wherein the beam is configured to move in a second direction.

14 . The apparatus of claim 11 , wherein the beam and the at least two depositing head assemblies are configured to move at least one of simultaneously and concurrently.

15 . The apparatus of claim 1 , wherein the at least two depositing head assemblies are configured to at least one of,
shoot different types/classes of solder pastes, shoot droplets with different shot sizes/ranges, and shoot droplets of various types of viscous media.

16 . An apparatus for depositing and/or jetting viscous medium on a workpiece, the apparatus comprising:
at least two support arrangements configured to move the workpiece in a first direction by transferring the workpiece from a first of the at least two support arrangements to a second of the at least two support arrangements; and at least one depositing head assembly configured to move in at least the first direction and a second direction, the at least one depositing head assembly being further configured to deposit the viscous medium on the workpiece at least one of concurrently and simultaneously while the workpiece moves between the first and second support arrangements.

17 . The apparatus of claim 16 , wherein the at least two supporting arrangements are cylindrical rollers.

18 . The apparatus of claim 16 , wherein the workpiece is a flexible substrate.

19 . The apparatus of claim 16 , wherein the at least one depositing head assembly includes at least two depositing head assemblies that are configured to at least one of,
shoot different types/classes of solder pastes, shoot droplets with different shot sizes/ranges, and shoot droplets of various types of viscous media.

20 . A linescan jetting apparatus for depositing and/or jetting viscous medium on a workpiece, the apparatus comprising:
a conveyor configured to carry the workpiece in a first direction; a first set of beams extending longitudinally between opposite sides of a depositing head assembly frame; a second set of beams extending longitudinally between the first set of beams, the second set of beams including a first beam and a second beam; and a first depositing head assembly movably fixed to the first beam, the first depositing head assembly being configured to move along the first beam in a second direction, which is perpendicular to the first direction; and a second depositing head assembly fixed to the second beam, the second depositing head assembly being configured to move along the second beam in the second direction.

21 . The apparatus of claim 20 , wherein the conveyor is configured to move the workpiece incrementally through the linescan jetting apparatus.

22 . The apparatus of claim 20 , wherein the first and second depositing head assemblies are configured to at least one of concurrently and simultaneously deposit viscous medium on the workpiece.

23 . The apparatus of claim 20 , wherein the first and second depositing head assemblies are configured to move in a third direction, which is perpendicular to the first and second directions.

24 . The apparatus of claim 20 , wherein the first and second depositing head assemblies are configured to at least one of,
shoot different types/classes of solder pastes, shoot droplets with different shot sizes/ranges, and shoot droplets of various types of viscous media.

25 . A linescan jetting apparatus for depositing and/or jetting viscous medium on a workpiece, the apparatus comprising:
a conveyor configured to carry the workpiece in a first direction; a first set of beams extending longitudinally between opposite sides of a depositing head assembly frame; at least one second beam extending longitudinally between the first set of beams; and a first depositing head assembly movably fixed to the at least one second beam, the first depositing head assembly being configured to move along the first beam in a second direction, which is perpendicular to the first direction.

26 - 48 . (canceled)

49 . A linescan jetting apparatus for depositing and/or jetting viscous medium on a workpiece, the apparatus comprising:
a conveyor configured to carry the workpiece in a first direction; a beam extending longitudinally between opposite sides of a depositing head assembly frame; and a single depositing head assembly movably fixed to the beam, the first depositing head assembly being configured to move along the beam in

Assignees

• Mycronic AB

Inventors

• MÄRTENSSON Gustaf
• Bergström Andreas
• Kurian Thomas
• Emthén Anders

Classifications

• B41J2202/05

  Heads having a valve · CPC title

• B29C64/112

  using individual droplets, e.g. from jetting heads · CPC title

• B05B1/3046

  the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice (B05B1/308 takes precedence) · CPC title

• B05B13/04

  the spray heads being moved during {spraying} operation · CPC title

• B05B17/0607

  generated by electrical means, e.g. piezoelectric transducers · CPC title