Row-type bottle-making machine is used to produce a variety of glass containers automatic bottle-making machine, the number of products produced accounted for more than 80% of all glass bottles and jars. Row machine according to its molding process is generally divided into blowing - blowing method (manufacturing small-mouth bottles) and pressure - blowing method of 2 types of process types

Blowing - blowing method is mostly used in the manufacture of small-diameter glass bottles and jars, the process is: loading T puffing - inverted blowing (initial type of blowing) T prototype flip - positive blowing and curing bottles and jars cooled T clamp bottles T cooling conveyor.

Pressure - blowing method is used in the manufacture of large-diameter glass bottles and jars, the process is: loading - stamping to take the prototype - prototype blowing T prototype (initial) bottle turnover - positive blowing and curing cooling - clamp bottles T cooling conveyor.

Row type bottle making machine

No matter what kind of molding process in the production process will have defects, molding machinery or molding different ways to produce defects and different. The initial mold temperature on the vertical direction of the bottle wall thickness of the impact is very large, mold temperature automatic control system is particularly important.

1、Glass temperature and initial mold temperature

The heat distribution of the mold is not the same, the glass temperature and mold temperature mismatch will make the glass bottle molding defects, there are several cases:

(1) Glass temperature and mold temperature are high

Due to insufficient cooling of the mold, the glass can not be shaped in time, the natural fluidity caused by deformation. This happens in addition to make the supply channel in the glass temperature down to the right outside, should be configured to take certain measures, such as mouth clamps turned over to the molding side, the positive blowing gas late to give some. Because in the ranks of the machine mold bottom, into the mold are used vertical cooling, into the mold contact time becomes shorter, can reduce the glass into the mold heat transfer, mold temperature in the role of vertical cooling, will soon fall to a reasonable molding temperature.

(2) high glass temperature and low mold temperature

When the glass temperature is high, in order to increase its heat dissipation, it is necessary to strengthen the cooling of the mold. If the cooling is not properly controlled, it is easy to cause local overcooling, so that the glass temperature is not uniformly lowered, resulting in poor wall thickness, sometimes resulting in out-of-roundness exceeds the standard.

(3) glass temperature and mold temperature are low

Glass temperature and mold temperature are low will lead to glass molding is not true, out of roundness exceeds the standard. This situation in the high-speed machine, large discharge volume of the feed channel rarely occurs, mostly because of some special reasons and operational errors, resulting in the feed channel in the glass liquid temperature is far below the molding temperature. Due to the continuity of glass bottle production, once the production of such a situation, the material temperature recovery process takes a long time.

(4) Ambient temperature

Line machine around the ambient temperature on the initial mold temperature will also have an impact, the same cooling time, day and night temperature changes will make the mold temperature changes. Initial mold temperature on the glass bottle wall thickness in the vertical direction has a great impact on the bottle wall 1.0mm lightweight bottles, for example, the initial mold temperature of 440 ℃ and 420 ℃, respectively, the bottle height of 180mm on the wall thickness of the most obvious changes, and here is also a relatively weak place.

Row type bottle making machine

2、The control method of initial mold temperature

As can be seen from the above analysis, the initial mold temperature on the bottle itself has a very important impact on the quality, control of the initial mold temperature of the row machine to improve the quality of the bottle is very helpful. Commonly, there are 2 kinds of initial mold temperature control: one is the fan control, also known as the source control; the other is the mold temperature control machine control, also known as terminal control.

(1) Fan control

Fan control belongs to the source control, is realized by controlling the source of the cooling wind. By adjusting the frequency of the cooling fan to adjust the fan's wind pressure and air volume, so that the initial mold temperature in line with the set value. Fan control can not control the temperature of each group, you must manually go to adjust the stalls of each group, which results in the possibility of individual initial mold mold temperature is too high or too low, which in turn affects the quality of the bottle, so this method of control of the mold temperature is not ideal.

(2) mold temperature control machine control

Mold temperature control machine control belongs to the terminal control. Initial mold temperature automatic control system MTC (Mould Temperature Control) is through the groups of initial mold cooling adjustment to achieve the set initial mold temperature, so that the initial mold temperature is maintained at a certain temperature, to achieve the uniformity and stability of the thickness of the bottle wall distribution.

When an initial mold temperature is too high, the signal collected by the thermocouple up to the PLC, in the PLC and the pre-set temperature comparison, if the temperature is higher than the set value, then increase the cooling time, if the temperature is lower than the set value, then reduce the cooling time. In order to achieve effective control of the initial mold temperature.

Mold temperature control machine has the advantages of simple operation, each group of initial mold temperature control parameters individually process recording, the initial mold temperature can be controlled within the range of ± 2 ℃, automatic and manual control of the two modes, after the transfer of production can be quickly stabilized initial mold temperature. Mold temperature control machine provides a stable initial mold temperature management, manual adjustment of cooling can not be achieved by the stable temperature management, mold temperature control machine can become a reality.

Mold temperature control machine through the collection of rows and columns of machine electronic timing signals, temperature control table output signals and the system's computer set parameters, output to the special control module, can be programmed, after the three kinds of input signal processing, output a switch signal control solenoid valve to regulate the time of the initial mold wind plate open to achieve the purpose of controlling the temperature of the initial mold.

Row-type bottle-making machine mold temperature control

The system is able to control the temperature change of the initial mold within ±2℃, and each group can be controlled individually. By using this system, it can reduce the wall thinness below the shoulder of the bottle, the thinness, as well as the mouth is not rounded and the wrinkles of the bottle, which effectively improves the quality of the product and the output.

One of the biggest effects of the mold temperature control machine is that it can greatly improve the cooling efficiency and enhance the cooling effect compared with the cooling devices of other row and column machines, and significantly improve the product quality on the basis of relatively low investment. Through the automatic control of the mold temperature control machine on the initial mold temperature, can improve the yield, improve the uniformity of the distribution of the thickness of the bottle wall, reduce the wrinkles and stripes of the glass bottle, reduce the size of the product deviation, and so on.

Glass bottle industry is a micro-profit industry, but also to win the volume of industry. In order to improve the production speed and product yield, we must start from the little by little, even if it is a very small technological reforms, if you can improve the yield of 1%, the benefits are also considerable, so in the glass industry can better reflect the "science and technology is productivity" reasoning. Through the mold temperature control machine on the cooling of the initial mold mold, mold temperature can be better controlled within a reasonable range, it greatly reduces the incidence of unqualified products, improve product quality, but also improve the production speed of the product, enhance the enterprise's ability to adapt to the market and the ability to compete to achieve the enterprise's internal industrial structure of the updated adjustment, and vigorously support and promote the development of the enterprise in order to adapt to market competition! Demand.