How to realize the rapid conversion of CNC in liquid packaging production line

Liquid packaging materials cover all aspects of our lives, such as alcohol, beverages, dairy products, vegetable oils, condiments in foods, detergents, shower gels, cosmetics, pharmaceutical preparations, pesticides, etc. in daily chemical products. Liquid packaging uses different filling methods and different filling techniques due to different materials to be packaged, such as isostatic filling, negative pressure filling, atmospheric pressure filling, pressure filling, and weighing filling. The liquid packaging container may be a glass bottle, a plastic bottle or a metal can, and the sealing method may be a gland of a crown cap, a screw cap of a threaded bottle mouth or a double crimping seal of a can.

Liquid packaging technology was first developed to the single-high speed type. When the equipment manufacturer accepts the user's order, it usually requires the customer to provide the filling material, packaging container and bottle cap. The equipment will also be commissioned with the sample bottle and cap provided by the customer. In order to regulate the consistency of containers and caps, they are also produced in accordance with relevant national industry standards. Usually a conventional high-speed packaging line is only suitable for one type of bottle. For example, beer bottles, only 640ml and 355ml glass bottles; the geometry of two aluminum cans has never changed much. These provide the basis for high-speed, reliable filling. The brewing machine with a large packaging speed of 60,000 bottles/hour glass bottle and 120,000 cans/hour cans has been introduced, and the productivity of the equipment has been greatly improved.

Many consumer products rely on the eye of the audience to improve the competitiveness of the market. The speed of updating the content is much lower than that of the packaging container, which is particularly prominent in the beverage industry and the daily chemical industry. The traditional high-speed production lines suitable for mass production can not fully meet the needs of enterprises. Enterprises must find new production technologies to adapt to the market changes of various varieties and small and medium batches. The versatility of liquid packaging equipment came into being.

Suitable for a variety of bottle filling machines

As early as liquor and beverage manufacturers, some small enterprises have proposed to use glass bottles with different shapes and shapes on some low-speed filling machines in order to increase the variety of packaging. Therefore, a small filling machine sometimes needs to be configured with three or four sets. Star wheels and guides, filling cylinders and sealing devices require a mechanical lifting mechanism to meet the customer's need to change the bottle type. Mechanical replacement and adjustment of such bottle types generally takes a relatively long time.

The plastic bottle is light in weight, can reduce transportation cost, is convenient for consumers to carry, reduces damage, saves packaging cost, and is widely used in liquid packaging. Among them, carbonated beverages, water drinks, tea drinks, and fruit and vegetable juice beverages in PET bottles account for more than 80% of total beverage production. PET provides a broad design space for bottle-type designers, which can strongly attract many consumers and form The mainstream of market consumption, these advantages make PET bottle packaging is gradually replacing glass bottle packaging.

The wide use of plastic bottles in the field of liquid packaging provides the basis for the convenient conversion of the bottle type. PET bottles generally have the same size and size, which can be used for air transportation, bottle filling and sealing. This allows for the replacement of the bottle type by simply replacing the star wheel and the guide plate, and quick loading and unloading is also possible.

The traditional packaging of daily chemical products such as detergents, shower gels and cosmetics is PVC bottles and PE bottles. Many daily chemical products are basically homogenized. The market's big selling points are often on the outer packaging, showing the corporate image and originality. Exquisite packaging is the pursuit of the company, producing distinctive packaging containers at economic cost, developing its own unique packaging, packaging containers and subtle changes in the filling line. The bottle types can be designed by themselves. And the production is implemented in a short time.


Due to the different filling materials, the liquid packaging has different specifications and shapes, and the sealing method is diversified, which basically belongs to special machinery. Especially for small and medium-sized enterprises, the variety of products and small batch size are its characteristics. After more than 20 years of introduction, digestion, absorption and innovation of packaging technology, packaging machinery has reached a modular design. By increasing the proportion of generalized and standardized design, the generalized components and standardized components of the equipment are increasing. The high degree of specialized production enables the serial development of equipment to be realized, which is extremely beneficial to meet the needs of users, shorten the equipment delivery period and improve the reliability of equipment operation. This technological trend provides the basis for the versatility of the device and the rapid conversion of the CNC.

Rapid CNC conversion of the production line

The industry's consistent and universally applicable packaging equipment design platform, after meeting the basic needs of Zui, special design enjoys standardized automation control, enabling customers to benefit from the solution combined with their specific application requirements, forming a device capable of CNC fast The design concept of the conversion, in order to achieve the versatility of the device.

A complete packaging line for beverages, dairy products, pharmaceuticals, and daily chemical products should generally include several processes such as demolition, bottle handling, transportation, bottle washing, filling, sealing, labeling, packing, infusion, and palletizing. Detection between processes in the production line. Packaging containers and products are frequently replaced on a packaging line, which poses certain difficulties for equipment adjustment and reliable operation of the equipment.

The production line with fast CNC speed conversion function can be considered as a tailor-made equipment for the user's packaging needs. It is a general-purpose equipment for packaging production of such special equipment in a company. It can realize the replacement of packaging materials and bottle type. Replacement, replacement of trademarks, replacement of cartons, and replacement of pallets.

The ideal CNC rapid conversion has been able to input all the parameters of the packaging method, including the packaged product, bottle type, filling amount and packaging capacity into the CPU of the PLC (programmable controller), except for the parts that must be replaced. The rest are achieved by adjustment. The PLC design of the production line has a replacement procedure for the production line, and all program adjustments are made by pre-setting without any change of control lines. Complete the adjustment of the device, create parameters on the touch screen displayed on the man-machine dialogue according to the size and shape of the new container to be filled, select some of the required settings, and confirm. At the same time, all parameters of the PLC have the possibility of modification and addition. The adjustment of this conversion should be a discontinuous adjustment.

The fewer the number of parts that must be changed, the better the parts will be positioned using locating pins, clamps, scales or digital displays without adjustment. To simplify these adjustments, these interchangeable parts are numbered in a specific container specification and these numbers are stored in the PLC.

In order to make the work program simple and error-free, all the changes to each bottle type are in the same color sequence. When the production line performs the replacement of products, bottles, trademarks, cartons, and pallets, the PLC change program generally indicates the location, quantity, and installation method of the replacement parts.

In addition to the high one-time investment cost, all other indicators are superior to the conventional single high-speed production plan. It is also because of the increased investment cost of equipment, which restricts the research and development of equipment manufacturers to the rapid conversion production line. The main reason is to consider the market capacity and the economics of user investment.

Economical multifunctional equipment

The development of automatic control theory and the widespread use of computers have laid the foundation for the emergence of new technological solutions. The CNC multi-function liquid packaging production line with fast conversion function has high equipment utilization rate and flexible production, which can adapt to production changes. When market demand or design changes, there is no need for changes in the hardware structure of the system, and the equipment has the flexibility to produce different products. Because it has obvious economic benefits in solving multi-variety, small- and medium-sized production than traditional technology, with the intensification of international competition, both developed and developing countries are paying more and more attention to the development of flexible technology.

The versatile design with CNC fast change is easier to implement on small packaging lines. It has been reported that the rapid conversion equipment for foreign packaging machinery replacement bottles has appeared in the field of cosmetics and pharmaceutical packaging. As mentioned earlier, cosmetic bottle packaging is updated faster, and this market demand has triggered the development of multi-function packaging machines. There are two ways to quickly convert, some parts do not need tools to achieve quick change, such as the star wheel and guide of the filling machine; another kind of lifting such as filling cylinder, labeling machine, packing machine and palletizer Adjust the operation of several servo motors controlled by the PLC to the required position.

Whether a liquid packaging production line should have a fast switching function, that is, whether the product is a single high-speed type or a multi-functional type, depending on the needs of the user, and also depends on its economy. The versatility of large production lines may sometimes not be economical. Take the product variety replacement as an example. The filling valve for filling the gas-filled beverage filling machine is more complicated than the filling valve for filling the non-gas beverage filling machine, and the equipment cost is high. A company mainly produces gas-containing beverages, and occasionally produces a non-gas-free beverage. It can purchase two products filled with a gas-filled beverage filling machine. Conversely, if it produces non-gas-based beverages, occasionally produce a little one. For gas beverages, if the production line is configured according to the gas-filled beverage filling machine, it may be possible to purchase a small gas-filled beverage filling machine while purchasing a non-gas beverage filling machine. economic.

Take the product bottle type replacement as an example. The change in the size of the drug or cosmetic bottle type is relatively small, and it is easy to achieve a relatively economical fast i-plug conversion. If the shape of the bottle type changes greatly, it needs to be considered separately. For example, a liquid filling machine should use two types of bottles with a diameter of 50mm and a diameter of 150mm. Generally, the small-sized bottle type has a fast filling speed, a small bottle spacing, and a high equipment speed; the large-sized bottle type has a slow filling speed and a large bottle spacing. The speed of the equipment is low, because the speed of the equipment should be designed according to the small bottle type. The bottle spacing of the equipment (usually interpreted as the modulus of the equipment) should be designed according to the large bottle type, and the economics of the equipment may be greatly reduced. High-capacity bottle-handling equipment is even less tolerant of designs with large variations in bottle type.

For labeling, boxing, and palletizing equipment, the conversion of the package is mainly achieved by adjustment. The realization of a new positioning size is performed by the servo motor, and its accuracy is unquestionable. However, the stability and reliability of the positioning after the position is realized depends on the rigidity of the positioner, which is also an aspect of increasing investment for large equipment. Therefore, for developing countries or developing enterprises, sometimes the mechanical adjustment and mechanical replacement are preferred when the labor cost is still relatively low. The disassembly, installation and adjustment of many replacement parts will take more time, but CNC fast conversion equipment can reduce investment.

However, multi-functional packaging equipment with fast replacement function has become the development direction of product design, which is a trend. Domestic equipment manufacturers should start research in this area before foreign equipment floods into the country. When developing such products, the production line must have a display system for monitoring, operation and fault diagnosis. The precise design of the production line operation can ensure that the various equipments of the entire production line are always in dynamic balance to ensure the efficiency of the equipment. And reliability.


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