CN-121717548-B - Multi-station collaborative operation intelligent control method and system for vertical ampoule bottle-making machine

CN121717548BCN 121717548 BCN121717548 BCN 121717548BCN-121717548-B

Abstract

The application provides a multi-station collaborative operation intelligent control method and system for a vertical ampoule bottle-making machine, which relate to the technical field of ampoule bottle-making machines and comprise the steps of obtaining a maximum temperature difference value, a pressure difference absolute value and a radial offset distance; when the first abnormal combination condition and/or the second abnormal combination condition are met, judging that the current glass tube blank has an abnormal positioning state at a sealing station, determining a first compensation value, obtaining the first tolerance value according to the first compensation value and a standard sealing tolerance value, determining a second compensation value, obtaining a second tolerance value according to the second compensation value and the standard sealing tolerance value, and verifying the position correctness according to the first tolerance value or the second tolerance value when the next glass tube blank arrives at the sealing station. On the premise of guaranteeing the sealing performance and geometric accuracy of the ampoule seal, the comprehensive efficiency of the device is obviously improved, and the rejection rate is reduced.

Inventors

KANG YAQING
Song Yungui
SHENG ZHENHUA
LI ZAIDE

Assignees

湖南华尔特今朝科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260210

Claims (7)

1. The intelligent control method for the multi-station collaborative operation of the vertical ampoule bottle-making machine is characterized by comprising the following steps: Step 1, sequentially flowing a glass tube blank through a heating station, a forming station and a sealing station, and respectively obtaining a maximum temperature difference value, a pressure difference absolute value and a radial offset distance, wherein the pressure difference absolute value is obtained through an upper die and a lower die; Step 2, constructing a first abnormal combination condition and a second abnormal combination condition according to the maximum temperature difference value, the absolute value of the pressure difference and the radial offset distance, wherein the first abnormal combination condition is that the maximum temperature difference value is larger than a preset temperature gradient upper limit value and the radial offset distance is larger than a standard sealing tolerance value; Step 3, judging that the current glass tube blank has an abnormal positioning state at a sealing station when the first abnormal combination condition and/or the second abnormal combination condition are met, removing the current glass tube blank and executing the next step; after the first abnormal combination condition and/or the second abnormal combination condition are identified to be met, respectively adjusting a temperature value and/or an upper die closing pressure value or a lower die closing pressure value of the heating station to obtain a target temperature value and/or a target pressure value; step 4, if the first abnormal combination is met, determining a first compensation value according to the maximum temperature difference value and a preset temperature gradient upper limit value, obtaining a first tolerance value according to the first compensation value and a standard sealing tolerance value, if the second abnormal combination is met, determining a second compensation value according to the absolute value of the pressure difference and a preset pressure asymmetry upper limit value, obtaining a second tolerance value according to the second compensation value and the standard sealing tolerance value, and if the first abnormal combination and the second abnormal combination are met at the same time, obtaining a third compensation value according to the first compensation value and the second compensation value, and obtaining a third tolerance value according to the third compensation value and the standard sealing tolerance value; and 5, when the next glass tube blank reaches the sealing station, verifying the position correctness according to the first tolerance value or the second tolerance value or the third tolerance value, wherein the step comprises the following steps: Step 51, obtaining the maximum temperature difference value, the absolute value of the pressure difference and the radial offset distance of the next glass tube blank; step 52, determining a continuous abnormal event count according to the first abnormal combination condition and/or the second abnormal combination condition; Step 53, if the following sub-conditions are met, the verification is passed and the sealing process is performed, otherwise, the verification is not passed and the next glass tube blank is removed, wherein the sub-conditions are that the maximum temperature difference value of the next glass tube blank is smaller than or equal to the preset upper limit value of the temperature gradient, or the absolute value of the pressure difference of the next glass tube blank is smaller than or equal to the preset upper limit value of the pressure asymmetry, and the radial offset distance of the next glass tube blank is smaller than or equal to the first tolerance value, the second tolerance value or the third tolerance value.
2. The intelligent control method for the multi-station collaborative operation of the vertical ampoule bottle-making machine is characterized by comprising the steps of collecting temperature values of all temperature measuring points of a glass tube blank based on a heating station, determining temperature difference values of adjacent temperature measuring points, obtaining maximum temperature difference values according to the temperature difference values, obtaining upper die closing pressure values and lower die closing pressure values through an upper die and a lower die based on a forming station, obtaining absolute values of pressure difference values according to the upper die closing pressure values and the lower die closing pressure values, obtaining a plurality of frames of first images and second images based on a sealing head and end faces of the glass tube blank based on a sealing station, and obtaining radial offset distances according to the first images and the second images.
3. The intelligent control method for multi-station collaborative operation of a vertical ampoule bottle-making machine according to claim 2 is characterized in that obtaining radial offset distance according to the first image and the second image comprises fitting based on the first image and the second image of each frame to obtain a first fitting circle center coordinate of an inner hole of a sealing head and a second fitting circle center coordinate of an end face of a glass tube blank, calculating average value according to the first fitting circle center coordinates of all frames to obtain a central position of the sealing head, calculating average value according to the second fitting circle center coordinates of all frames to obtain a central position of the end face of the tube blank, and obtaining radial offset distance according to the central position of the sealing head and the central position of the end face of the tube blank.
4. The intelligent control method for multi-station collaborative operation of a vertical ampoule bottle-making machine according to claim 1, wherein when the first abnormal combination condition is satisfied, adjusting a temperature value of a heating station to obtain a target temperature value, comprises: Determining a target heating area according to the temperature value; determining a maximum temperature value and a minimum temperature value according to the temperature value; According to the maximum temperature value, the minimum temperature value and the preset temperature gradient upper limit value, carrying out temperature adjustment on the target heating area to obtain a temperature adjustment quantity; and obtaining a target temperature value according to the local temperature value and the temperature adjustment quantity.
5. The intelligent control method for multi-station collaborative operation of a vertical ampoule bottle-making machine according to claim 4, wherein when the second abnormal combination condition is met, the upper die closing pressure value or the lower die closing pressure value is adjusted to obtain a target pressure value, and the method comprises the steps of judging whether the upper die closing pressure value is the same as the lower die closing pressure value, if yes, ending, otherwise, calculating a pressure adjustment amount according to the upper die closing pressure value and the lower die closing pressure value, and calculating according to the pressure adjustment amount, the upper die closing pressure value or the lower die closing pressure value to obtain the target pressure value.
6. The intelligent control method for multi-station collaborative operation of a vertical ampoule bottle-making machine according to claim 5, wherein when the first abnormal combination condition and the second abnormal combination condition are satisfied simultaneously, the temperature value of a heating station, the upper die closing pressure value or the lower die closing pressure value are adjusted simultaneously to obtain a target temperature value and a target pressure value.
7. The intelligent control system for the multi-station collaborative operation of the vertical ampoule bottle-making machine is used for executing the intelligent control method for the multi-station collaborative operation of the vertical ampoule bottle-making machine according to any one of claims 1-6, and is characterized by comprising the following modules: The acquisition module is used for acquiring a maximum temperature difference value, a pressure difference absolute value and a radial offset distance, wherein the pressure difference absolute value is obtained through an upper die and a lower die; The construction module is used for constructing a first abnormal combination condition and a second abnormal combination condition according to the maximum temperature difference value, the absolute value of the pressure difference and the radial offset distance, wherein the first abnormal combination condition is that the maximum temperature difference value is larger than a preset temperature gradient upper limit value and the radial offset distance is larger than a standard sealing tolerance value; the judging module is used for judging that the current glass tube blank has an abnormal positioning state at the sealing station when the first abnormal combination condition and/or the second abnormal combination condition are met, and rejecting the current glass tube blank; The compensation module is used for determining a first compensation value according to the maximum temperature difference value and a preset temperature gradient upper limit value, obtaining a first tolerance value according to the first compensation value and a standard sealing tolerance value, determining a second compensation value according to the absolute value of the pressure difference and a preset pressure asymmetry upper limit value if the second abnormal combination is met, obtaining a second tolerance value according to the second compensation value and the standard sealing tolerance value, obtaining a third compensation value according to the first compensation value and the second compensation value if the first abnormal combination and the second abnormal combination are met at the same time, and obtaining a third tolerance value according to the third compensation value and the standard sealing tolerance value; And the verification module is used for verifying the position correctness according to the first tolerance value or the second tolerance value or the third tolerance value when the next glass tube blank reaches the sealing station.

Description

Multi-station collaborative operation intelligent control method and system for vertical ampoule bottle-making machine Technical Field The application relates to the technical field of ampoule bottle-making machines, in particular to an intelligent control method and system for multi-station collaborative operation of a vertical ampoule bottle-making machine. Background In the production process of the vertical ampoule bottle-making machine, the glass tube blank sequentially flows through a heating station, a forming station and a sealing station, and each station has a critical influence on the quality of a final product. However, in actual production, due to the fluctuation of the running state of the equipment, improper setting of the process parameters or the influence of environmental factors, abnormal conditions often occur, and the phenomenon of incorrect positions of the glass tube blank at the sealing station occurs. Specifically, the uneven temperature distribution in the heating station can cause the difference of local softening degree of the glass tube blank to further cause the deformation of the tube blank, and the asymmetric pressure of the upper die and the lower die in the forming station can cause the geometric shape distortion of the tube blank to form an ellipse or an eccentric circle. If the problems are not detected and corrected in time, the alignment precision of the sealing station is directly affected, so that the sealing is poor, such as poor sealing tightness, unqualified appearance and the like, and the product quality and the production efficiency are seriously affected. Conventional ampoule bottle making machines typically employ a fixed tolerance threshold method to determine if the seal is in place and simply reject non-compliant products. Although the method can identify partial problem products, the method has the defects that firstly, the method cannot distinguish 'supply state abnormality' (such as uneven temperature or asymmetric pressure) from 'sealing mechanism fault', and is easy to misjudge or miss detection, secondly, the method only relies on a fixed tolerance threshold to judge, a dynamic response mechanism for an upstream process state is lacking, and similar problems possibly occurring in the follow-up process state cannot be prevented, and finally, a passive rejection mode not only increases rejection rate, but also can mask potential equipment faults or process defects, so that continuous production is interrupted and maintenance cost is increased. Disclosure of Invention The present application aims to solve at least one of the technical problems in the related art to some extent. To achieve the above objective, the embodiment of the application provides a multi-station collaborative operation intelligent control method for a vertical ampoule bottle-making machine, which comprises the following steps: Step 1, sequentially flowing a glass tube blank through a heating station, a forming station and a sealing station, and respectively obtaining a maximum temperature difference value, a pressure difference absolute value and a radial offset distance, wherein the pressure difference absolute value is obtained through an upper die and a lower die; Step 2, constructing a first abnormal combination condition and a second abnormal combination condition according to the maximum temperature difference value, the absolute value of the pressure difference and the radial offset distance, wherein the first abnormal combination condition is that the maximum temperature difference value is larger than a preset temperature gradient upper limit value and the radial offset distance is larger than a standard sealing tolerance value; step 3, judging that the current glass tube blank has an abnormal positioning state at a sealing station when the first abnormal combination condition and/or the second abnormal combination condition are met, removing the current glass tube blank and executing the next step; step 4, if the first abnormal combination is met, determining a first compensation value according to the maximum temperature difference value and a preset temperature gradient upper limit value, obtaining a first tolerance value according to the first compensation value and a standard sealing tolerance value, if the second abnormal combination is met, determining a second compensation value according to the absolute value of the pressure difference and a preset pressure asymmetry upper limit value, obtaining a second tolerance value according to the second compensation value and the standard sealing tolerance value, and if the first abnormal combination and the second abnormal combination are met at the same time, obtaining a third compensation value according to the first compensation value and the second compensation value, and obtaining a third tolerance value according to the third compensation value and the standard sealing tolerance value; And 5, when the next glass tube