B-800 High Precision Dispensing Machine

The B-800 high precision dispensing machine is one of the compact automatic dispensers Southern Machinery has demonstrated for PCB assembly. In the official product video, the machine applies glue in programmed patterns with the kind of repeatability that manual syringes or hand-operated dispensers cannot hold across a full shift. If your line still relies on hand application of surface-mount adhesive, sealant or encapsulation compound, this short demo is worth watching before you quote the next manual-glue labor hour.

▶ Watch the B-800 high precision dispensing machine product video (official Southern Machinery demo on the SMT solution provider channel)

What is this machine used for?

A high precision dispensing machine like the B-800 is used to apply controlled amounts of liquid or paste material onto printed circuit boards and assemblies. Typical fluids include surface-mount adhesive (the red or yellow glue dots that hold SMD components in place before wave soldering), epoxy, conductive silver adhesive, IC encapsulation adhesive, underfill, sealant and protective coating. Instead of an operator squeezing a syringe by hand, the machine moves a valve or nozzle over the board along a programmed path and delivers the same dot size at the same position on every board.

In an SMT context, dispensing is the standard answer when stencil printing cannot do the job: dots that are placed on boards already populated with components, adhesive applied to the bottom side of mixed-technology boards, or material applied around components after reflow. Southern Machinery positions the B-800 in this "dispensing and fastening" class of peripheral automation that complements insertion machines, reflow ovens and wave soldering lines.

Typical Application Scenarios

EMS / PCB assembly subcontractors — glue dot dispensing for bottom-side SMD components before wave soldering, and encapsulation or sealing of finished PCBA for customers who need repeatable fluid application without dedicating a printer.
LED lighting and display makers — adhesive for LED boards, drivers and modules where dot position and volume directly affect optical alignment and reliability.
Power supply and ballast plants — encapsulation and potting of power boards, plus adhesive fixing of components that must survive vibration.
Home appliance and white-goods electronics — control PCBs (air conditioners, washing machines, microwaves, electric kettles) that mix SMT and THT assembly and need glue dots on the solder side before wave soldering.
Automotive electronics suppliers — sealant, underfill and strain-relief adhesive for engine-control and body-electronics boards that face temperature cycling and vibration.
Industrial control and medical device makers — small-batch, high-mix boards where program-based changeover beats manual application for consistency and documentation.

How It Integrates into a Complete PCB Assembly Line

A bench-top or standalone dispenser such as the B-800 fits into the line in three common positions:

Between screen printing and component placement (adhesive dot dispensing for the solder side of mixed SMT/THT boards). The glued bottom-side SMD components are cured and later soldered by the wave soldering machine, so no second reflow pass is needed.
After reflow or wave soldering for encapsulation, underfill, sealing or coating steps that protect assembled PCBA.
As an offline auxiliary station in front of a THT auto-insertion cell or final assembly area, where operators load a board, the machine applies the programmed dots, and the board moves on.

Because it is a compact, program-driven station rather than part of the conveyorized line, it integrates with existing SMT/THT lines the same way Southern Machinery's other peripheral equipment does — no conveyor redesign needed. Mark points on the PCB keep the dispensing pattern aligned to the board, which matters when the same machine runs several board types per day.

Key Selection Parameters (confirm with Southern Machinery)

Southern Machinery's dispensing video demonstrates the machine running; for a real purchase decision, confirm these parameters against your process:

Fluid type and viscosity — thin adhesives need different valves and pressure control than high-viscosity paste or two-component materials.
Valve / dispensing method — needle dispensing for dots, spray or jetting for thin coatings, auger or diaphragm valves for paste; confirm what the machine is configured for.
Working area (X/Y/Z) — must cover your largest board or fixture.
Precision and repeatability class — for fine-pitch SMD glue dots, look for repeatability in the ±0.01 mm range typical of this equipment class, and confirm the actual specification for the model offered.
Programming and teaching — how patterns, mark points and dispensing time are set; the Southern Machinery demo series shows start-up checklists, product programming and dispensing-time adjustment on these machines.
Vision alignment — whether a CCD camera locates the board or mark points automatically, which is important for high-mix production.
Nozzle maintenance — how the nozzle is cleaned and how often; Southern Machinery also publishes nozzle-cleaning guidance for dispensing machines.
Power and footprint — bench-top machines need only standard single-phase supply; confirm exact requirements.

ROI, Quality & Throughput Perspective

The business case for automating dispensing is rarely about speed alone — it is about consistency and labor:

Quality — a machine places every dot at the programmed coordinate with the same volume. Manual glue application is a classic source of skipped-component defects at wave soldering, adhesive starvation, and contamination of pads that should stay solderable.
Labor — one operator can load/unload a dispenser while it runs, instead of spending the shift hand-applying glue. Program changeover replaces retraining time when the product mix changes.
Material waste — controlled dots mean no over-dispensing, no clogged hand syringes, and no scrapped boards from glue on the wrong pad.
Documentation — saved programs give you repeatable, auditable process settings — useful for EMS customers who must prove process control to their own clients.

Dispensing Solutions from Southern Machinery

Southern Machinery (Shenzhen, China; founded 2011) designs and manufactures SMT/THT PCB assembly automation and supports 237+ customers worldwide. The dispensing lineup it supplies includes:

Automatic SMT glue dispensing robots — general-purpose automatic glue dispensers for PCB assembly (micro-computer controlled, program memory for multiple products, point-to-point and continuous-line movement; a representative model offers a 310 × 330 × 60 mm work area with ±0.01 mm repeatability — see the Automatic Glue Dispensing Machine for SMT PCB assembly page).
S-400SP desk-top visual dispenser — a CCD-vision-guided desktop dispenser for fast, high-precision non-contact spray dispensing (400 × 400 × 100 mm work area, ±0.01 mm repeatability, PC-based control, handles surface-mount adhesive, epoxy, conductive silver adhesive, underfill and sealant) — product page.
B-800 high precision dispensing machine — the bench-top precision dispenser shown in this video. Model B-800 is a legacy-demo machine; contact Southern Machinery for current availability, configuration and full specification.

All dispensing equipment is backed by the same service ecosystem as the rest of the Southern Machinery range: spare parts, training, and global support. If you want to see more machine photos, browse ph.smthelp.com; full catalogs are available at file.autoinsertion.com.

FAQ

Q: What can a B-800 high precision dispensing machine dispense?

A: Machines in this class apply surface-mount adhesive, epoxy, conductive adhesive, encapsulant, underfill and sealant in programmed dots or lines on PCB assemblies. The exact fluid range depends on the valve configuration — confirm with Southern Machinery for the model offered today.

Q: Is the B-800 suitable for mixed SMT/THT boards that go through wave soldering?

A: Yes. Glue dot dispensing on the solder side is a standard way to hold bottom-side SMD components before wave soldering, avoiding a second reflow pass. A dispensing station fits upstream of the wave soldering machine in a mixed-technology line.

Q: How does automated dispensing improve quality compared with manual glue application?

A: It removes operator-dependent variation: every dot is placed at the programmed position with controlled volume, reducing skipped components, adhesive on wrong pads, and rework.

Q: Does Southern Machinery provide training and spare parts for its dispensing machines?

A: Yes. Southern Machinery (Shenzhen, founded 2011) supports customers with installation and training, spare parts supply, and after-sales service, and its YouTube channel includes dispensing start-up and programming tutorials.

Q: Can the machine handle different PCB sizes and product changeovers?

A: Dispensing machines of this type store multiple product programs, and mark points keep patterns aligned to each board. Confirm the working area and program memory against your largest board.

Q: How do I get a configuration recommendation?

A: Contact Southern Machinery with your board size, fluid type and production volume. Reach Jason Wu at jasonwu@smthelp.com or visit www.smthelp.com — the team will recommend a machine and configuration rather than a one-size-fits-all quote.

Contact Southern Machinery for Configuration Advice

For a B-800 or any dispensing / glue-application question, contact Jason Wu at jasonwu@smthelp.com (Tel/WhatsApp: +86 13602562576). Southern Machinery provides high-efficiency, cost-effective SMT/THT PCB assembly automation — from dispensers and stencil printers to auto-insertion machines, wave soldering, board handling and inspection — with global support, spare parts and training from its Shenzhen base. Visit file.autoinsertion.com for catalogs and ph.smthelp.com for machine photos.

B-800 High Precision Dispensing Machine for PCB Assembly