DEK 265 horizon Engineering Specification
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DEK 265 horizon Engineering Specification

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Engineering Specification
http://www.dek.com
DEK Part No. 156935

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Summary of Contents for DEK 265 horizon

  • Page 1 Engineering Specification http://www.dek.com DEK Part No. 156935...
  • Page 3 Copyright (c) 2000 DEK Printing Machines Limited. All Rights Reserved. Trademark Acknowledgment AutoFlex, Form-Flex, Vortex and ProFlow are registered trademarks of DEK Printing Machines Limited. Microsoft and MS-DOS are registered trademarks of Microsoft Inc. Windows and Windows NT are trademarks of Microsoft Inc.

  • Page 5: Table Of Contents

    CONTENTS HORIZON ENGINEERING SPECIFICATION ENGINEERING SPECIFICATION GENERAL DESCRIPTION TECHNICAL SPECIFICATION MACHINE FOOTPRINT. KEY FEATURES . Camera System . Windows NT Diagnostics SCREEN IMAGE POSITIONING MACHINE OPTIONS ProFlow . 2D Inspection Under Screen Cleaner . Paste Dispenser . Board Clamp Options . Tooling Networking Generic Equipment Model...
  • Page 6 CONTENTS Engineering Specification Chapter Issue 1 May 00...

  • Page 7: Engineering Specification General Description

    GENERAL DESCRIPTION ENGINEERING SPECIFICATION GENERAL DESCRIPTION Using a world wide installed base of thousands of 265 printers, DEK has engineered the evolution of the industry’s most successful screen printer platform to create the Horizon – a printing machine focused on improving flexibility, yield and price/performance.

  • Page 8: Technical Specification

    TECHNICAL SPECIFICATION Screen Frames Specification Type External (w x l x t) Internal (w x l) Standard DEK 265 736 x 736 x 38/40mm 660 x 660mm (29″ x 29″) (26″ x 26″) Optional Chase Adaptors DEK 260 585 x 585 x 38mm 508 x 508mm (23″...
  • Page 9 ENGINEERING SPECIFICATION TECHNICAL SPECIFICATION Fiducials 2 or 3 Fiducials Types Synthetic fiducial library or unique pattern recognition Fiducial Size 0.5 - 3mm Fiducial Position Anywhere on PCB (see Fiducials, Key Features) Fiducial Error Recovery Auto Lighting Adjustment Auto Fiducial Search Smart Fiducial Performance Specification...
  • Page 10 Off line software package to generate and edit product files. Available on board or via network Network LAN package to transfer data within the factory network. Package includes DEK netfile software, which can target product and SPC files to location on the network Certification Specification...

  • Page 12: Key Features

    ENGINEERING SPECIFICATION KEY FEATURES KEY FEATURES Camera System The camera assembly integrated into the Horizon is a compact assembly of optics, lighting and a standard CCIR camera. The camera is fitted with a split optic unit to allow the camera to capture the image from the stencil and board at the same time.
  • Page 13 Without DEK’s use of telecentric lenses, a pre-alignment stage would have to be added to bring the fiducials into the centre of the field of view, before carrying out a final alignment stage.
  • Page 14 Poor quality images may result in a degradation of image processing leading to less accurate alignment and if inspection is used, misleading results. DEK’s camera assembly fitted to the Horizon has been specifically designed to enable low quality boards to be aligned and inspected with equal accuracy as gold/copper boards.
  • Page 15 ENGINEERING SPECIFICATION KEY FEATURES Direct lighting is achieved by a block of six LEDs shining through a diffuser to produce a very uniform light source. The light is passed through a cube beam splitter which increases the illumination and the range of angles reaching the board.
  • Page 16 ENGINEERING SPECIFICATION KEY FEATURES PatMax The Horizon machine uses PatMax® object location software to produce accurate repeatable stencil to board alignment. PatMax interprets geometric shapes within objects. A square fiducial is interpreted by PatMax as four separate line segments. The advantages of the system are greater accuracy at lower image quality.
  • Page 17 ENGINEERING SPECIFICATION KEY FEATURES Fiducials The Horizon uses the vision system to capture and process alignment marks or fiducials to align the stencil to each board before it is printed. The alignment marks or fiducials are produced as part of the artwork of the board and stencil, in the same relative position.
  • Page 18 ENGINEERING SPECIFICATION KEY FEATURES Video Model The video model is an alternative to using fiducials for stencil to board alignment. Video model uses the correlation between the image of an area of the stencil and the image of the same area of the board to align the two. This is useful if the board or stencil has no fiducials or the condition of the fiducials does not allow satisfactory recognition.

  • Page 19: Windows Nt

    ENGINEERING SPECIFICATION KEY FEATURES Windows NT The Horizon uses Windows NT operating system due to its inherent robust nature. It is a globally accepted and industry standard user and programming interface. The main printer control, vision and user interface modules run under Windows NT with the time critical, board handling and axis jogging routines running on the real time operating system of the Baldor®...

  • Page 20: Diagnostics

    ENGINEERING SPECIFICATION KEY FEATURES Diagnostics The Horizon machine contains a diagnostic module which enables the following functions: Calibration of the machine • • Aid to machine fault diagnosis by means of - Individual access and control of modules - Access to the machine I/Os This module can be password protected and can be enabled without the need to initialize the Horizon.
  • Page 21 ENGINEERING SPECIFICATION KEY FEATURES Selecting a particular module accesses the following typical menu: From the menu a user can carry out the following: • Independently control each module axis • Module calibrations • Cycle the complete module • Verify the operation of sensors Chapter Issue 1 May 00 Engineering Specification...

  • Page 22: Screen Image Positioning

    ENGINEERING SPECIFICATION SCREEN IMAGE POSITIONING SCREEN IMAGE POSITIONING To allow the Horizon to be set up consistently, it is important the image in the screen frame is accurately positioned. The screen image can be either: • Centre justified - The image is positioned such that the centre of the board coincides with the centre of the screen.

  • Page 23: Proflow

    ENGINEERING SPECIFICATION MACHINE OPTIONS MACHINE OPTIONS ProFlow ProFlow is an optional print material transfer system which applies the printable material directly onto the stencil alleviating the need for squeegees and a paste dispenser. ProFlow is a self contained unit with the following advantages: •...
  • Page 24 ENGINEERING SPECIFICATION MACHINE OPTIONS ProFlow operates in the horizontal and vertical planes. The unit is raised and lowered to the stencil by means of the ProFlow printhead mechanism stepper motor. A downward force is applied to the ProFlow transfer head directly onto the stencil which provides: •...

  • Page 25: 2D Inspection

    ENGINEERING SPECIFICATION MACHINE OPTIONS Paste Cassette Size 300mm (192cc) (900gms approx) Transfer Head Type Cassette - in three sizes 300mm 350mm 400mm Rechargeable - in five sizes 300mm 350mm 400mm 450mm 500mm 2D Inspection 2D inspection (2Di) ensures the quality of the print by monitoring the printing process.
  • Page 26 ENGINEERING SPECIFICATION MACHINE OPTIONS Stencil Inspection The vision system carries out various stencil inspections and are shown below: Stencil Aperture Clean Stencil The position and area of apertures within the screen site are learnt as a reference. Aperture Paste Blockage (Basic) Any change to the area of the aperture must be paste, hence the percentage of blockage can be...
  • Page 27 ENGINEERING SPECIFICATION MACHINE OPTIONS Board Inspection The vision system carries out various board inspections and are shown below: Clean Board The pad on a selected board site is learnt Board as a reference for comparison with inspected sites. Paste Present (Basic) Paste Since the area of the pad is learnt, and the area of paste can be recognized,...
  • Page 28 ENGINEERING SPECIFICATION MACHINE OPTIONS Paste Volume Prediction 2Di combines the results of board and stencil inspections, and using a propriety formula calculates the predicted paste volume. This is only available while the inspection is set to advanced for both board and stencil. Aperture Paste on Pad Screen...
  • Page 29 ENGINEERING SPECIFICATION MACHINE OPTIONS Specification Inspection Specification Maximum Number of Sites 500 sites Maximum Site Size 4 mm by 4 mm Automatic Learn Single Site Rows Columns BGA Frame Stencil Inspection Accuracy Repeatability (Within) ±6% ±5% Aperture Blockage Stencil Smear ±0.1mm²...

  • Page 30: Under Screen Cleaner

    ENGINEERING SPECIFICATION MACHINE OPTIONS Under Screen Cleaner Paper Under Screen The optional paper under screen cleaner is a fully programmable cleaner with an Cleaner additional vacuum option, if desired. The unit wipes lint free cleaning paper, dry or wet across the underside of the screen to minimize paste build up and operator intervention.
  • Page 31 ENGINEERING SPECIFICATION MACHINE OPTIONS Vortex Under Screen The optional Vortex under screen cleaner is a programmable cleaner with Cleaner additional vacuum option, if desired. The unit wipes the Vortex foam cleaning cassette, consisting of both a wet and a dry cell, across the underside of the screen to minimize paste build up and operator intervention.

  • Page 32: Paste Dispenser

    ENGINEERING SPECIFICATION MACHINE OPTIONS Paste Dispenser The optional paste dispenser is only utilized when the machine is fitted with squeegees. The paste dispenser dispenses a precise quantity of solder paste equal in length to the print width and along a line calculated from the print stroke start position and the size of board.

  • Page 33: Board Clamp Options

    ENGINEERING SPECIFICATION MACHINE OPTIONS Board Clamp Options Board Clamps This traditional method of securing a board during the print stroke, utilizes a thin foil mounted on the board clamp assembly trapping the board on the transport belts. A pneumatically operated piston lowers the board clamp and foil, securing the board during the print stroke.
  • Page 34 ENGINEERING SPECIFICATION MACHINE OPTIONS Foil-less Clamps This option is used on thin boards when there is a requirement to print close to the edge of the board for traditional board clamps. The board is secured during the print stroke by the use of vacuum. The clamps are perpendicular to the board maintaining a good gasket between the stencil and the board.
  • Page 35 ENGINEERING SPECIFICATION MACHINE OPTIONS Edge Clamps This option is utilized when there is a requirement to print close to the board edge. During the print stroke, the board is secured between an adjustable and a fixed edge clamps by the action of a pneumatically operated piston. On completion of the print stroke the pneumatic solenoid is de-activated, allowing the spring loaded piston to retract releasing the board.

  • Page 36: Tooling

    ENGINEERING SPECIFICATION MACHINE OPTIONS Tooling The tooling support options available for the Horizon are described briefly in this section. The specifications for the various options are tabulated below: Tooling PCB Support Pin Diameter Remarks Magnetic Magnetic Pins 19mm (0.75") Manual Changeover Support Pillars 4mm (0.16") Dedicated...
  • Page 37 ENGINEERING SPECIFICATION MACHINE OPTIONS Dedicated Tooling The Dedicated Tooling system is uniquely tailored to fully support the board whilst being printed. The system consists of the following elements: Plate Assembly (1) - consists of an upper and lower section. The upper •...
  • Page 38 ENGINEERING SPECIFICATION MACHINE OPTIONS Dedicated Tooling The dedicated tooling plate is a 3 piece construction comprising two vertical Plate supports and a flat top board support. It is manufactured to the same height as the magnetic pins irrespective of board thickness, ie 81mm (+0.00mm, -0.05mm). The assembly has dowel registration and is held in position on the manual tooling plate by magnets located on the vertical supports.
  • Page 39 ENGINEERING SPECIFICATION MACHINE OPTIONS MultiFlex The MultiFlex tooling plate hardware consists of a hollow box constructed from four adjustable side plates. The side plates are secured to the MultiFlex tooling plate using magnets. The tooling plate is located on the tooling table by means of dowels.
  • Page 40 ENGINEERING SPECIFICATION MACHINE OPTIONS AutoFlex AutoFlex tooling is a fully automatic tooling facility, which allows board support for each product to be programmed into a product file. The correct board support pins for each product are selected automatically when the board parameters are programmed into the product file.
  • Page 41 ENGINEERING SPECIFICATION MACHINE OPTIONS Form-Flex Form-Flex tooling is a fully automated tooling facility that conforms to any given board profile, fully supporting the underside of a populated board and stencil. Form-Flex tooling consists of 5 -20 pin modules with pin up/down control and each module contains 36 pins in two rows.

  • Page 42: Networking

    Utilizing the network, products and data can be exchanged between the Horizon and other equipment. DEK Network Files option allows the machine control software to access remote product and data directories on a server. Once product files are present on the server, they can be shared by all printers and PCs on the network.

  • Page 43: Speed Up

    ENGINEERING SPECIFICATION MACHINE OPTIONS Speed Up The speed option is a combination of software and firmware enhancements which reduce the Horizon cycle time from 12.5 seconds to 10 seconds. Remote Board Stop The Remote Board Stop (RBS) is an optional alternative to the existing camera board stop for use with large and/or heavy boards or component carriers.

  • Page 44: Statistical Process Control

    MACHINE OPTIONS Statistical Process Control DEK use Statistical Process Control (SPC) techniques to verify the quality of the Horizon machine at build, during training courses, at installation and at any time the machine accuracy is suspect. To be of good quality the products of a process must conform to predetermined expectations and must be consistent, ie the paste apply to a printed circuit board.

  • Page 45: Off Line Editor

    ENGINEERING SPECIFICATION MACHINE OPTIONS Off Line Editor The Off Line Editor (OLE) is an optional desktop application which can operate under Windows 95/98 or NT. The OLE has an easy to use graphical user interface available in English, French or German. Facilities exist in this application for the creation and editing of product files off the printer.

  • Page 46: Environmental Control Unit

    ENGINEERING SPECIFICATION MACHINE OPTIONS Environmental Control Unit This optional standalone unit delivers conditioned air at controlled levels of temperature, relative humidity and airflow velocity to maintain optimum solder paste operating conditions within the Horizon printer. The unit operates throughout a wide spectrum of ambient conditions, providing process control within 1°C and 5%RH.

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