Lenze solution based on carton sealer application

Chen Zujian, Application Engineer, Lenze (Shanghai) Transmission System Co., Ltd.

Abstract: Based on the concept of automatic opening, packing and sealing, this article describes the process and technical difficulties of the sealing machine, introduces the solution based on Lenze products, and summarizes the Lenze 9400 HighLine servo controller in the field of drive control. Advantage.

Keywords: Lenze Packer 9400HighLine circular interpolation

1 Introduction

With the development of society and the advancement of science and technology, the degree of automation in the logistics and packaging industry is getting higher and higher. It originally required a few people to accomplish more than a dozen people. Because of the injection of science and technology, only one or two people can complete it. Packing and sealing machine, as the name implies, is to put the items in the box and seal it. The carton sealing machine described in this paper is mainly aimed at the tobacco industry. The cigarettes are automatically packed into boxes and sealed. The carton sealing machine is a new generation of cigarette box sealing equipment independently researched and developed based on the advantages of similar products at home and abroad. It has a carton automatic supply system, a visual system, etc. It can easily realize large and small boxes. exchange.

2 Packing and sealing machine technology

The carton sealing machine is divided into two processes at the beginning. The cigarette case is sent to the carton automatic supply station through the AGV car, and the carton is placed at the meeting point of the cigarette bin by grabbing and lifting. At the same time, the two axes are interpolated. Open the box and use a robot to open the box and wait for the cigarettes to enter the box. Another way is to send the strips of cigarettes through the strip conveyor to the stack of cigarettes for stacking. After stacking into 5 stacks or 10 stacks, push the rods by pushing them. box. Finally, the cigarette box is transported by the main push of the cigarette box. During this process, the seal labeling and other actions are performed. The flow chart is as follows.

Figure 1 process flow chart

In terms of electrical control, centralized-dispense control is used, and the logic relationship is controlled through PLC. The program of driving and positioning is completed by the Lenze servo controller 9400 HighLine to reduce the workload of the programmer and improve the control accuracy and flexibility. Sex.

Figure 2 Electrical Control System Diagram

3 Lenze Solutions and Features

This solution uses Lenze drive products, including the 9400 HighLine servo controller, 8400StateLine inverter and MCS servo motor. Among them, the 9400HighLine servo controller has the features of visual free programming, multiple modes of zero-return mode and speed and position switching, etc., and can adopt different function modes according to different station and sports characteristics. The 9400HighLine can also implement various drive control schemes. This program uses 9400HighLine positioning, TP window, Cam, TP correction and other functions according to the application needs.

The stacking mechanism is a cigarette sent from the cigarette input mechanism and is arranged and stacked in a pattern of five layers and five layers, and is composed of three cam structures: lift, opening and closing, and transfer in a mechanical structure through a speed reducer. The indirect work system requires speed, smooth start, and stop stability. This system uses the Cam function of the 9400 HighLine. Since this station is running in one direction, the accumulated error will occur for a long time. Therefore, the TP correction function is needed to eliminate the accumulated error. Lift and horizontal transport using Limit positioning function, the host computer simply sends the controller's position value and start command to 9400HighLine, 9400HighLine can be run independently to the specified position, greatly reducing the host computer's programming tasks.

The smoke evacuation mechanism pushes the cigarette into the carton, and the gear train is driven by a gear motor to complete the smoke pushing action. Pushing the smoke board consists of two parts. When pushing smoke, the upper and lower parts of the work surface are flush; on the return journey, the lower part is folded back. Ensure that the return space does not occupy the space required for cigarette stacking to improve machine efficiency.

Unpacking action is the key action of the whole system. It requires two motors to run a quarter arc in the form of interpolation. If the speed is too slow, the production efficiency is too low and loses the competitive advantage. If the speed is too fast, it will result in The box broke. The handling and unpacking of the box are as follows. In the process of unpacking, both the starting point and the end point have an axis in the tangential direction. This results in the fact that the speed of the shaft in the tangential direction will theoretically reach infinity at normal speed. In order to solve this problem, this solution adopts a double cam structure. The X-axis follows a virtual spindle to run a fifth-order polynomial, which makes it possible to run slowly at the beginning and at the end of the process, and to run at a fast speed in the middle. This ensures the running time. Prevents overshoot. The Y axis controller runs interpolation along the X axis and takes a quarter circular interpolation.

Figure 3 box handling and unpacking

4 Lenze Project Highlights

1) Independent motion control solution, basically all the drive control algorithms and programming can be implemented in the 9400HighLine servo controller. The host computer simply sends the control information to the servo controller, which greatly reduces the customer's programming. task.

2) Flexible and visual programming, Lenze Engineering, programming software of servo controller adopts CFC language programming, intuitive programming, convenient operation, on-line diagnosis and oscilloscope functions, and can easily monitor the running status of the system during debugging.

3) Multiple communication interfaces are available. The 8400 series inverter supports various communication protocols such as CAN, ProfiBus, EtherCAT, and EtherNET, and has wide openness.

4) The 8400 series inverters are divided into high, medium and low third gears, basically covering all inverter applications. Can be customized according to the needs of customers, saving customer cost.

5 Outlook

The box is a special device designed for tobacco companies with a system speed of 8 cases/minute. In the current trend of increasing labor costs year by year, increasing the level of automation in production has become the goal that all industries have achieved first, which means that they will rely more and more on the automation of production equipment. Packaging machine equipment is such a The market came into being. The packaging machine described herein can be applied to many other similar fields by only slightly modifying the mechanical structure, that is, the packaging application of the strip-shaped articles will be a potential market for the packaging sealing machine equipment.

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