Geomembrane overlap wedge welder / Geomembrane plastic welding machine

General:
    Geomembrane welding machine is our new developed products, which can weld geomembrane of different thickness and are applicable for welding of all thermal-fused material such as PE, PVC, HDPE, EVA, PP and the like.
    The control of this series of welding machine adopts PID automatic thermostatic control with high control accuracy and low temperature fluctuation; speed control adopts PWM automatic voltage and speed regulation circuit, driven by DC servo motor, with great output torque and the operating is stable. It can maintain a constant speed on the condition of creeping, vertical creeping and variable road load. Also this series of welding machine is stable in performance despite of external temperature and voltage variation.
     This series of welding machine is excellent in performance and easy for operating, with high welding speed and good work quality. It is extensively used in engineering projects such as express highways, tunnels, reservoirs, waterproof of construction and so on.

 1.  paramenters

Voltage:           220 v

Frequency:      50Hz

Power:             800w

Welding speed:  0.5-5 m/ min

Heating temperature : 0-450 degree

Thickness of material to be welded: 0.2mm-1.5mm
 Overlap width: 100mm
 Welding width: 12.5mm×2, interior cavity 12mm

Seam strength: >85% base material (tensile resistant in shear direction) ,complete machine
 Weight: 5Kg
 Insulation class: class II

2. Precautions
 1).  For correct operation, please carefully read this instruction.
 2).  Use with grounded 3-cords mains cable and socket (socket with 10A capacity. On the corresponding welder, phase L connected to live wire, N to zero line, phase =to grounded protection line), plug will not be modified without prior permission.
 3).  For good welding quality, please assign specified personnel for operation.
 4).  Pressure roller will not engage on free running.
 5).  Do not operate when it is exposed to water to prevent inferior quality.
 6).  The machine has been regulated before leaving factory. Please do not adjust it at will.
 7).  Circuit board in control box is live with electricity, do not remove it without prior notice to authorized personnel.
 8).  Preheat for 30 minutes before start up if machine has been long unused or exposed to moisture.
 9).  Modifications may be made for continuous improvement, without prior notice.

3. Main components

4. Operation principle
 Motor drives upper and lower pressure rollers to rotate through reduction gearbox and chain. Slide carriage drives the hot wedge and insert it between the two base materials, at the same time lever presses pressure rollers and engages the two fused base materials.

5. Operating regulations
 As welding quality is direct related to speed and temperature setting during operating, so welding machine must be specified personnel operated to reach excellent quality and high efficiency.
 1). Use with grounded 3-cord mains cable and 3-hole socket with capacity not less than 10A (socket corresponds with welder plug, phase L connected to live wire, N to zero line, phase = to grounded protection line), confirm that external lines have been well connected. Check that power is on off state and regulate temperature control potentiometer and speed control potentiometer to 0 position, press lever handle down to disengage pressure roller, then insert the plug.

2). Turn on the power and select certain temperature and speed, take several narrow materials for try welding. Temperature selection may be different for the same material at different ambient temperature and material thickness. To determine the best welding effect, adjust the speed to approximately 2m/min, and then fine increase it from low to high temperature (approximately 250-350 degree)
 3). Judge on welding temperature: for transparent PE material, judge by direct observing, speed and temperature will be appropriate if welding mark is flat and in transparent glass form; temperature will be too high and speed be too slow if mark is heavy broken; temperature will be low and speed be fast if mark is not transparent and with white. For opaque material, observe if there is obvious welding mark, also tensile test can be made after complete cooling.
 4). Flatly and straightly trim the weld edges and frontage faced, with lower left and upper right overlapped. The overlap width is 100mm.
 5). After temperature and speed have been determined, insert material to be welded between the two pressure rollers, make machine body parallel with edges of base materials and engage press lever handle for proper motion. Generally, only observation of deviation between welding mark and base materials is needed for operator, and timely make correction on small degree.
 6). When welding will be ended, timely press lever handle to disengage upper and lower pressure roller to prevent rubber wheel damage for long duration.
 7). Excessive temperature high and low may occur because of thermal inertia. On this condition, temperature deviation may be compensated by speed regulation on a small degree.
 8). A "T"shape overlap is formed between welded material and another material. Welding method is shown as fig.5, tightly butt the overlap head of hot wedge against weld mark, and beveling cut length is approximately 100mm.