Glue amount compensation control system

Abstract

The invention discloses a glue amount compensation control system which is characterized in that when glue is dispensed at a corresponding time point through glue dispensing equipment, the system needs to carry out pressure compensation on the glue dispensing equipment through a corresponding positive pressure compensation value or negative pressure compensation value; if the positive pressure compensation value or the negative pressure compensation value cannot reach the corresponding preset value, the control unit controls the electric proportional valve to adjust again until the corresponding preset value is reached; corresponding time points: setting a plurality of corresponding time points in the whole dispensing time range; a positive pressure compensation value: the corresponding positive pressure compensation value needs to be compensated at the corresponding time point; the corresponding negative pressure compensation value needs to be compensated at the corresponding time point; setting compensation values of the positive pressure and the negative pressure along with time change in advance according to the change characteristics of the glue viscosity and the glue allowance; in the dispensing operation, the positive pressure and the negative pressure can be correspondingly adjusted along with time according to the set compensation value, and therefore the glue output amount and the back suction effect are stabilized.

Description

technical field [0001] The invention relates to the field of glue dispensing, in particular to a glue amount compensation control system. Background technique [0002] At present, with the development of science and technology, the dispensing control system needs to continue to iterate, and continuously improve the accuracy and stability to meet the increasingly high requirements of various industries for the dispensing process. Correspondingly under the high requirements, during the dispensing process The corresponding problems will appear as follows: [0003] First, in the dispensing process, the viscosity of some glues will change with time during use. When dispensing glue with a syringe, the change in the viscosity of the glue will cause the glue output Unstable, for example, it will gradually become smaller or larger, which will affect the dispensing quality; [0004] Second, in the case of constant feeding pressure, even if the viscosity of the glue is stable, but fo...

AI Technical Summary

Problems solved by technology

[0003] First, in the dispensing process, the viscosity of some glues will change with time during use. When dispensing glue with a syringe, the change in the viscosity of the glue will cause the glue output Unstable, for example, it will gradually become smaller or larger, which will affect the dispensing quality;

[0004] Second, in the case of constant feeding pressure, even if the viscosity of the glue is stable, but for the glue with low viscosity, as the remaining glue in the syringe decreases, the amount of single glue output will gradually decrease, that is, " Poor water head" problem;

[0005] Third, with the gradual reduction of the remaining glue, the self-weight of the glue is getting smaller and smaller than the initially set back-suction negative pressure value, and the problem of air being sucked back will appear;

[0006] Fourth, the current control method of the products used to stabilize the amount of glue in the industry is to change the time of a single glue discharge; but in actual use scenarios, the time of a single glue The glue-out time must be well matched with factors such as motion control and dispensing trajectory. It is very difficult to debug and it is impossible to change frequently; see the attached figure 1 Under the change of single glue output without glue amount compensation control, the single glue output without glue amount compensation control will decrease with the dispensing time; see attached image 3 There is a phenomenon of air being sucked back in the suction effect without glue volume compensation control;

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