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土工膜焊接机工作原理及操作规程英文版

文章来源:cstgb 更新时间:2019-01-25 15:01:49

一、土工膜焊接机工作原理

  电机通过减速箱和链条驱动上下压辊旋转。滑架驱动热楔片并将其插入两种基材之间,同时杠杆压下压辊并接合两种熔融基材。

图4焊接示意图

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二、土工膜焊接机操作规程

由于焊接质量与操作时的速度和温度设定直接相关,因此须指定操作人员操作焊机,以达到优良的质量和高效率。

1、与接地的3线电源电缆和容量不小于10安的3孔插座(插座与电焊机插头对应,L相连接到带电线,N相连接到零线,相连接到接地保护线),确认外部线路连接良好。检查电源开关状态,将温控电位器和速度控制电位器调到0位置,按下手柄,分离压辊,然后插入插头。

2、土工膜焊接机打开电源,选择一定的温度和速度,取几种窄料试焊。在不同的环境温度和材料厚度下,相同材料的温度选择可能不同。为了确定焊接效果,将速度调整到大约2米/分钟,然后将其从低温微调到高温(大约250℃-350℃)。

3、焊接温度判断:对于透明聚乙烯材料,直接观察判断,焊接标记平整透明玻璃形式时,速度和温度适宜;标记严重破损时,温度过高,速度过慢;标记不透明白色时,温度偏低,速度快。对于不透明材料,观察是否有明显的焊接痕迹,也可在完全冷却后进行拉伸试验。

4、对焊缝边缘和正面进行平直修边,左下和右上重叠。重叠宽度为100 mm。

5、确定温度和速度后,将要焊接的材料插入两个压辊之间,使机体与基材边缘平行,并接合压杆手柄以进行适当的运动。一般情况下,操作人员只需观察焊缝与母材的偏差,并及时进行小幅度的校正。

6、焊接结束后,及时按下手柄,使上下压辊脱离,防止胶轮长期损坏。

7、温度过高或过低可能是由于热惯性造成的。在这种情况下,温度偏差可以通过小幅度的调速来补偿。

8、土工膜焊接机在焊接材料和其他材料之间形成“T”形重叠。焊接方法如图5所示,将热楔的搭接头与焊缝标记紧紧对接,斜切长度约为100 mm。

一. Operation principle

Motor drives upper and lower pressure rollers to rotate through reduction gearbox and chain. Slide carriages drive 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.

 

Fig.4 Welding schematic diagram

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二. 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℃).

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.

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