A heat shrink packaging machine that can perform basic functions must include: inlet and dispensing sections, main drive section, film section, upper film section, heat shrink furnace section, and control section. In addition, if a tray is to be added under the package, the tray storage and conveying portion is also required. In addition, some of the other extensions may be included. Below we will give a detailed description of each part of the workflow and the precautions for this part when selecting devices.
Bottle and bottle part
The main function of this part is to transport the product to the inside of the machine. Products entering the heat shrink packaging machine come in two forms, a dispersed product and a product that has been packaged into a small package. Dispersed products refer to products that have not been subjected to any secondary packaging; the latter are small packages that have been packaged once by the pre-packaging machine, which will be re-packaged.
This part can be divided into three parts: bottle entry, heald direction and lateral shaping.
Feeding the bottle is to transport the product into the packaging machine, which belongs to the conveying line. Generally speaking, this part is also adjusted and controlled by the packaging machine. The key to the bottle entering part is the speed adjustment. The good packaging machine can be delivered without pressure, and its speed can also change with the speed of the bottle indexing finger. In order to ensure that the bottle is squeezed or the bottle is too loose during the entire cycle of the split finger movement, this function is especially important for the packaging of the gas-free beverage.
The heald direction is divided into several columns in which the products conveyed into the bottle part are divided into a comprehensive direction according to the requirements of the package form. The general situation consists of several suspended stainless steel partitions and positioning devices for these partitions. When using and purchasing machinery, pay attention to the following two points in this link: * If the partition plate is stainless steel plate, be sure to pay attention to the imported guide device. If the handling is not good, the imported scratched packaging trademark may be damaged or damaged here. The case of packaging. Second, the positioning devices of these dividers are currently available in three forms. Zui used to separate and fix the partition plate by a column block with a certain spacing. The advantage of this form is that the cost is low, but the disadvantages are also very obvious, that is, the conversion of the production variety is too long, the labor intensity is large, and the modernization cannot be satisfied. Production needs for equipment flexibility. At present, a more practical method is to set a manual adjustment wheel at each positioning device, so that the conversion time can be shortened with only a small increase in cost, and the conversion can be completed without too complicated operations. Now, the advanced part of Zui is completely completed by the servo motor. As long as the type conversion program is called on the operation panel, the equipment will automatically switch to the spacing of the new production variety, but the cost of the equipment is too high.
The transversely shaped section, which divides the longitudinally separated products into rows according to packaging requirements. The old way is to use a cylinder-controlled pneumatic door to separate, this way the speed can not be too fast. However, this method is also used in the packaging of small packages into large packages, that is, a pressure plate controlled by a cylinder. Nowadays, most machines use a group of bottle fingers driven by a pair of servo motors. This method controls the movement of two servo motors to adjust the distance of a group of bottle fingers to complete the pair. Separation of products. The ingenious design of the bottle can be used to complete the packaging of all products with only one set of bottles. It is not necessary to replace the bottle every time the product is replaced. Another advantage of the bottle is that after the bottle is divided. You can also send a product forward until the next step.
Main drive section
The main transmission part is located in the middle of the heat shrink packaging equipment, which is the benchmark for all the movements of the machine. It is mainly completed by a set of push rods driven by a frequency converter. The function is to send the package form completed in the previous process to the film wrapping area. . An encoder is installed at the end of the main motor to control all pulses of the machine. A clutch or proximity switch is mounted on one of the shafts of the push rod, and when the main push rod is overloaded, the clutch is disengaged and the machine is stopped. The requirement for this part is smooth operation, which is even more important for high speed machines.
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