Single Head Dual Platform Compact Automatic Screw Locking Machine ZT-SLJ-DP-D09 PLC Control for Small Batch Assembly

The ZT-SLJ-DP-D09 is a compact single head dual platform automatic screw locking machine engineered for small batch, high mix assembly. Instead of forcing small runs onto a large inline fastening system, this desktop unit keeps two independently programmed working platforms inside a footprint of only 800 x 780 x 850 mm, so a single machine covers sample builds, pilot runs and routine production without occupying valuable floor space. Every fastening cycle is driven by a PLC with a touch screen interface, and screws are delivered by air blow feeding, which removes the bulky vibratory bowl and the jams that usually come with it.

Small batch production lives or dies on changeover time. On this machine a product switch, including screw size, torque value and platform program, is typically completed in under ten minutes, which means a workshop can move from one housing assembly to the next inside a single shift. The dual platform layout then lets one side load and unload while the other side fastens, delivering roughly double the output of a single platform desktop screwdriver at a fraction of the cost of a full inline station.

• Compact desktop footprint: The 800 x 780 x 850 mm frame sits directly on an existing workbench, so no dedicated production floor or compressed air line layout is required.
• Single head dual platform structure: Two programmable platforms share one fastening head, alternating load and fasten cycles to maximise output on a small machine.
• Under ten minute changeover: Screw size, torque and platform recipe are switched through the touch screen, making the unit practical for high mix, low volume assembly.
• Air blow screw feeding: Screws travel through a light tube directly to the bit, keeping the design simple, reliable and virtually maintenance free compared with vibratory bowl feeders.
• M1.0 to M4.0 screw capability: Handles micro screws used in electronics, small appliance and instrument assembly, with torque adjustable from 0.3 to 3.0 Nm to protect plastic threads.
• PLC plus touch screen control: Fastening coordinates, screw counts and torque limits are stored as recipes, so operators do not need programming skills to run a new job.
• CE and ISO 9001 build quality: Every unit is assembled, inspected and test run before shipment, with an OEM and ODM option for custom fixtures.

The dual platform layout is aimed at manufacturers who fasten housings, brackets, PCBs, terminal blocks, small appliances, power supplies, lighting modules and laboratory instruments in batches of a few dozen to a few thousand pieces. Because the platform working area is 250 mm x 250 mm, typical parts include control boxes, sensor housings, handheld device shells and sub assemblies that need between two and twenty screws per unit. Startups, laboratories, sampling workshops and factories running trial production all use this configuration when a fully automated inline screw locking line cannot be justified by volume, while established plants add it as a flexible cell for rework and after sales service work.

Typical materials include ABS, PC, PP and other engineering plastics where low torque control prevents thread stripping, as well as aluminium and steel brackets that need consistent clamping force. The air blow feed system handles screws from short machine screws to small self tapping types, and the touch screen allows a different fastening sequence to be stored for each customer part number, so a workshop handling several clients can keep every recipe on the machine.

Each machine is packed in an export standard wooden case with shockproof foam, protecting the frame, controller and feeding tubes during sea or air freight. Outgoing inspection covers fastening accuracy, torque repeatability, platform motion and a full test run, and a machinery test report is provided with the shipment. The unit carries CE certification and is produced under an ISO 9001:2015 quality system, with a one year warranty on the main fastening head and control system. OEM and ODM requests, including custom fixtures, bespoke platform tooling and private labelling, are supported, and our engineering team can review your part drawing to confirm the screw range and fixture design before the order is placed. Minimum order quantity is one set, delivery time is 7 to 15 working days, and payment terms include T/T, L/C and Western Union.