用于薄膜密封设备的紧凑型一体化电机应用方案

2018-04-29 21:20:52 研蓝自动化 15

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薄膜密封的设备和机器是LoopeSnutsWiWi Tealk Gbh公司的专长。1000个塑料袋是昂贵的,100000个是便宜的,”Norbert Schumacher解释说,他是位于德国贝吉施-格拉德巴赫的公司的技术经理。通常,袋子也需要不同大小的。小型自动化设备的需求在汽车和半导体工业和医疗技术部门尤为迫切。

伺服电机|电机控制器|步进电机|直流无刷电机|集成式电机


薄板卷被夹紧,轧制出所需的长度,切割,并与一个基本接缝同时熔化。所有的标准装置都是通过这种方式工作的。这就是为什么一个特定的驱动组件的决定似乎很容易:伺服电机与运动控制,在所有型号中使用的大范围从著名制造商。它们提供了生产精确长度的袋子所需的定位精度和速度。然而,这个尝试和测试的解决方案有一个问题:它不够紧凑,不适合小型口袋男孩400的计划尺寸。


负责这项开发项目的舒马赫回忆道:“对具有相同功能的步进电机进行搜索。”每台机器的两个驱动器,以确保精确的功能,以实现正确的袋长度和直线切割。一个驱动器驱动进给辊并控制进给长度,该进给长度对应于袋长度。切割和焊接设备需要第二步进电机。笑话使用所有设备中的脉冲焊接过程,其中密封条与顶部刀片的切割运动同时向下移动。在较低的位置,袋被密封在橡胶板上。切割后,袋子落在传送台上。在这里,驱动器产生一个完整的工作行程一个革命。步进电机的优点是进给和升降运动之间的最佳相互作用,可以与速度优化精确地协调,“项目经理说。


所有参数,包括行程长度、循环次数、密封/冷却时间、项目数量等,通过触摸屏输入,并且系统在S7接口上被控制。由于长度以毫米为单位,但驱动器使用其计算增量,将毫米测量转换为所需数量的步骤并转发到驱动器控制。


经过全面的评估过程,选择有利于从NeNoTEC电子插头和驱动电机。步进电机与集成控制器的结合满足了Price对紧凑解决方案的要求。毕竟,迷你袋男孩足够小,适合任何工作台或工作台。


型号为PD6 N8918M9504的两台电机,尺寸86,现在在每一个小型行李袋400中使用。长度为121mm,尺寸正确,5.9N的保持力矩正确。电机也有正确的价格、质量和性能。得益于NANOTEC专有的DSPDead技术和开/闭环支持,与以前使用的伺服电机相比,没有任何缺点,而且它们更加紧凑。DSPDeST技术是基于数字信号处理器,使用软件以比标准IC更高的分辨率来调节电机电流。该电机以较低的谐振运行,并且还提供了在开环中从1.8到1/64或1/128的1%个增量的自适应阶跃分辨率。


基于Windows的软件NanoPro被用来设置插头和驱动电机是否工作在开环或闭环模式。闭环控制具有能耗低的优点。过载储备允许输出峰值而没有系统故障,低共振意味着电机更安静。减少了电机轴承上的加热,延长了其使用寿命,从而延长了机器的整体可用性。驱动器和西门子S7控制和Cimon触摸屏之间的交互作用也非常完美。“舒马赫对他的插头和驱动电机的决定感到满意。


mini BagBoy可以生产薄膜宽度在400到600毫伺服电机|电机控制器|步进电机|直流无刷电机|集成式电机

Devices and machines for film sealing are the specialty of joke Folienschweißtechnik GmbH. A new machine for smaller runs was required to cover the lower output range. "1000 plastic bags are expensive, 100,000 are cheap," explains Norbert Schumacher, Technical Manager at the company based in Bergisch-Gladbach, Germany. Often, bags are also needed in different sizes. The requirement for a small automated device was found to be particularly pressing in the automotive and semi-conductor industries and the medical technology sector.



Sheet rolls are clamped, rolled out to the required length, cut, and are fused with a base seam at the same time. All standard devices from Joke work in this way. This is why the decision for a particular drive component seemed easy: servo motors with motion control, as used in all models in the large range from the renowned manufacturer. They provided the positioning accuracy and speed necessary to produce bags to exact lengths. However, there was a hitch in this tried and tested solution: It was not compact enough for the planned size of the mini-BagBoy 400.


"The search was on for stepper motors with the same functionality," recalls Schumacher, who was in charge of the development project. Two drives per machine were to ensure precise functioning to achieve the right bag length and a straight cut. One drive actuates the feed roller and controls the feed length, which corresponds to the bag length. The second stepper motor is required for the cutting and welding equipment. Joke uses the pulse welding process in all devices, where the sealing bar moves downwards simultaneously with the cutting movement of the top blade. In the lower position, the bag is then sealed against a rubber plate. After cutting, the bags drop onto a delivery table. Here the drive generates an entire working stroke with one revolution. "The advantage of stepper motors is the optimal interplay between the feed and lifting movement that can be accurately coordinated with speed optimization," says the Project Manager.


All parameters, including stroke length, number of cycles, sealing/cooling time, item quantities, etc., are entered via a touchscreen, and the system is controlled on an S7 interface. As the length is set in millimeters, but the drive uses increments for its calculations, the millimeter measurements are converted into the required number of steps and forwarded to the drive control.


Following a comprehensive evaluation process, the choice was made in favor of the Plug & Drive motors from Nanotec Electronic. The combination of stepper motor with integrated controller met Joke's requirements for a compact solution. After all, the mini-Bag-Boy is small enough to fit on any workbench or work table.


Two motors of model number PD6-N8918M9504, size 86, are now in use in every mini-BagBoy 400. With a length of 121mm, the dimensions were correct and the holding torque of 5.9N was right. The motors also had the right price, quality and performance. Thanks to Nanotec's proprietary dspDrive technology and open/closed loop support, there were simply no disadvantages in relation to the servo motors formerly used, and they are considerably more compact. The dspDrive technology is based on a digital signal processor and uses software to regulate the motor current in a higher resolution than with standard ICs. The motor runs with lower resonance, and also offers an adaptive step resolution of 1% increments from 1.8 to 1/64 or 1/128 in the open loop as well.


The Windows-based software NanoPro is used to set whether the Plug & Drive motors work in open or closed loop mode. Closed loop has the advantage of lower energy consumption. Overload reserves permit output peaks without the system failing and the low resonances means that the motors are quieter. The reduced heating is easy on the motor bearings and extends their service life, thus also extending the overall availability of the machine. "The interaction between the drive and the Siemens S7 control and the Cimon touchscreen also functions perfectly." Schumacher is pleased with his decision for the Plug & Drive motors.


The mini-BagBoy can produce bags with a film width between 400 and 600mm and lengths between 15 and 4000mm and more, including on multiple tracks. "The machine is ideal for manufacturing small runs of different bag sizes at low-cost," confirms the Project Manager. Customers have found exactly the same thing, and several machines have already been sold.