Surface Mount Technology Department

Installing equipment beginning with screen printer.

Pick & Place and Reflow installed.

Describing process to the Prime Minister of New Zealand.

Close proximity cellular design reduces travel, increases communication & minimises work in progress.

Picture 1 (2012 ) shows two production lines located in close proximity to the end of the SMT production line (Pic 2 2015), reducing travel, improves communication and helps to limit WIP. Pic 3 illustrates continuous improvement activity with, shelving moved & replaced by inline meter mixing machine, connected to automated X/Y table.

To view each picture, click & hold on circle with arrows. Move left & right.

Before

Migrating to flow lines 2010.

Kanban & digital work instructions being phased in.

  • Technician assembles product in its entirety, including prep work.
  • Long lead times.
  • Product not being tested as it is built increasing opportunity for large number of defects.
  • Requires a test schedule.
  • Increased work in progress.
  • Increases opportunity for damage/obsolescence.
  • Poorly utilised space.

After

Flow lines in operation 2015

  • To left of picture is the In process Kanban with prepped components.
  • Changeover time reduced from two days to 15~30 mins.
  • TQM principles applied with each assembly technician checking the previous technicians work, aided by computer based schematic, BOM, digital pictures, videos and instuctions.
  • Modular line design for mobility during relayout.
  • Pneumatic tooling changed to electric, reducing noise and accomodating modular relayout.
  • Secondhand wavesolder purchased & installed. Utilises spray fluxer instead of foam fluxer, improving solder joint quality and reduces cleaning.
  • Old wavesolder provides spare parts in the event of breakdown
  • Grey cupbards in background provide critical spare parts kanban. 5S ‘Shine’ cupboard holds cleaning supplies and tools for assembly technician team.

Before

Visual management not possible.

  • Obstructive shelf design breaks down communication & creates silos.
  • Shelves allow clutter to accumulate untidily.
  • Pneumatic tooling restricts ease of relayout.

After

Flow line 2015

  • Integrated, real time, in process testing finds defects immediately after unit build and provides immediate feedback loop for the rest of the product run.
  • Prepping station in foreground re-designd with ergonomic bench, shadow board and castors for mobility.

Before

Test department

  • Test department is to the left in the picture. Untidy and visual management not possible.
  • Department was broken down and integrated into continuous flow lines.

After

U Shape Production Cell

  • Accommodates good communication for frequent changeover.
  • Accomodates 1.5 changeovers per day on average.
  • Designed to facilitate low volume / high variety product range.
  • Centralised inventory expediting SMED changeover.

Before

  • 5S principles not applied. Untidy area wastes time as technicians must search and find items.
  • Partially tested product in foreground. Technicians switching from product to product attempting to satisfy demand from final assembly.

After

Floor space now occupied by a production cell complete with…

  • Digital work instructions.
  • Task lighting.
  • Kanban.
  • Continuous flow line with modular design for easy relayout.

Before

Production floor 2009.

  • Work station methodology used in conjunction with kitting.
  • Visual management not possible.
  • Inconsistent assembly times from technician to technician make attempt at accurate schedule futile.
  • Poor ergonomics & low level lighting places strain on operators, in turn leading to defects.
  • 5S not applied & undefined shelving leads to untidy, cluttered work area.
  • Obstructed walkways lead to mishandling and rework.

After

Production Floor 2015

  • Continuous flow line up & running since 2010.
  • Task lighting and ceiling lighting added.
  • Ergonomic benches, seating and lighting designed into work space.
  • Air conditioning adjusted and controlled. Avoids individual heaters, reducing fire risk & lowers costs.

Before

Production floor 2011

  • Work station methodology being transitioned in preparation for production cell. (Left of picture)
  • Flow line 1 fully operational. (Right of picture)

After

 Production Floor 2015

  • Production cell to the left. Flow line to the right.
  • Continuous improvement in action. to the right, extraction units added & safety cover preventing flying leads.
  • Clearly defined thoughway with adequate spacing.

Before

  • Island workstations.
  • Undefined pathways for movement of people, parts & assembled product.
  • Inadequate provision for raw material & workspace.

After

  • Clearly defined pathway.
  • U shaped cells running alongside windows, with a standard footprint & making use of natural light.
  • Kanban inventory centralised, along with department supervisor for good communication & visual management.
  • (Note: Picture taken very recently after relayout. Significant room for improvement: cables foreground to be tidies & secured. Excess raw material)

Before

  • Raw material resting on floor
  • Causes damage.
  • Poses tripping hazard.

After

  • Kitting trolleys being phased in.
  • Allocates known location.
  • Prevents damage.
  • Prevents accidents.
  • Increases technician value add time.

Before

  • Insufficient workspace.
  • Undefined tooling & component locations. Leads to waste, defects and potential accidents.
  • Work area being used as a throughway.

After

  • Larger footprint provides a sufficient space to work.
  • Technician provided a computer allowing access to the following – Digitised Work Instructions. Standard Drawings. Department schedules. Email communication for customisation details.
  • U shape maximises floor space and includes soak test area (left of photo).
  • Travel to soak test area eliminated, saving time and prevents accidents.
  • Work area cannot be used as a throughway.
  • 5S principles yet to be fully applied – shadow board & defined component locations.
  • Strategically designed for trialling a flow line assembly concept. See CAD video.

Before

  • Island workstation. Walkways all around and often used as throughway.
  • Partially completed product sitting on bench in danger of being knocked over either by assembly technician or passing foot traffic.

After

  • Newly designed workstation confirgured in standard U shape footprint at cell level.
  • On a larger scale, the final assembly area was designed in U shape format making use of the natural light from windows.
  • Component inventory centralised as Kanban for fast, easy access.
  • This establishes clearly defined walkways, very important when being used to transport bulky goods.
  • Large items from stores can now be pre-kitted and delivered through these paths.

Before

  • Shelving not fit for purpose wasting space & gathering clutter.

After

  • Kitting trolleys being phased in
  • Allocates a known, safe location for components.
  • Prevents damage.
  • Prevents accidents.
  • Pre kitting prevents high value technician looking for components & keeps production flowing.