阅读说明：本技术 一种注塑模具温度控制方法及系统 (Injection mold temperature control method and system ) 是由 许九刚 于 2021-09-29 设计创作，主要内容包括：本发明涉及注塑模具技术领域,具体的说是一种注塑模具温度控制方法及系统,该注塑模具温度控制方法,具体包括以下步骤：S1、预设注塑模具注塑温度和时间关系曲线中的参数；S2、通过温度采集模块实时采集注塑模具的注塑型腔内的温度；S3、通过比较模块将温度采集模块实时采集的注塑模具的注塑型腔内的温度和时间与预设注塑模具注塑温度和时间关系曲线中对应的温度值进行比较；S4、控制模块向加热执行模块或冷却执行模块发出信号,控制加热模块或冷却模块对注塑模具的注塑型腔进行加热或冷却。本发明使得注塑模具的温度保持在适当的温度范围内,提高注塑制品的质量,降低废品率,从而提高企业的生产效率。(The invention relates to the technical field of injection molds, in particular to an injection mold temperature control method and system, wherein the injection mold temperature control method specifically comprises the following steps: s1, presetting parameters in the relation curve of injection molding temperature and time of the injection mold; s2, acquiring the temperature in the injection molding cavity of the injection mold in real time through a temperature acquisition module; s3, comparing the temperature and the time in the injection molding cavity of the injection mold, which are acquired in real time by the temperature acquisition module, with corresponding temperature values in a preset injection molding temperature and time relation curve of the injection mold by the comparison module; and S4, the control module sends a signal to the heating execution module or the cooling execution module to control the heating module or the cooling module to heat or cool the injection cavity of the injection mold. The invention keeps the temperature of the injection mold within a proper temperature range, improves the quality of injection molding products, reduces the rejection rate, and thus improves the production efficiency of enterprises.)

1. A temperature control method for an injection mold is characterized by comprising the following steps: the method specifically comprises the following steps:

s1, presetting parameters in the relation curve between the injection temperature and the time of the injection mold on a temperature control system through a system setting module according to the injection type of the mold;

s2, arranging a temperature acquisition module in the injection mold, and acquiring the temperature in an injection molding cavity of the injection mold in real time through the temperature acquisition module;

s3, the temperature acquisition module transmits the acquired information to the comparison module, the comparison module compares the temperature and time in the injection molding cavity of the injection mold acquired by the temperature acquisition module in real time with the corresponding temperature value in the preset injection molding temperature and time relation curve of the injection mold, and the injection molding temperature in the injection mold at the moment is judged;

and S4, the comparison module transmits the comparison result information to the control module, and the control module sends a signal to the heating execution module or the cooling execution module according to the comparison result information to control the heating module or the cooling module to heat or cool the injection molding cavity of the injection mold.

2. An injection mold temperature control method according to claim 1, characterized in that: the step S1 includes:

s11, setting a set temperature value and error accuracy of the system through a temperature setting module;

s12, setting parameter codes of each module in operation through a parameter setting module;

and S13, setting the operation mode of the system through the mode setting module.

3. An injection mold temperature control method according to claim 1, characterized in that: in the step S4, if the injection temperature in the injection mold is lower than the corresponding temperature value in the relationship curve between the injection temperature and the time of the preset injection mold, the control module sends a control signal to the heating execution module, the on-off time of the heating module is adjusted by the heating execution module, and the injection mold cavity of the injection mold is heated by the heating module to increase the temperature.

4. An injection mold temperature control method according to claim 1, characterized in that: in the step S4, if the injection temperature in the injection mold is higher than the corresponding temperature value in the relationship curve between the injection temperature and the time of the preset injection mold, the control module sends a control signal to the cooling execution module, the on-off time of the cooling module is adjusted by the cooling execution module, and the injection mold cavity of the injection mold is cooled by the cooling module.

5. A control system of an injection mold temperature control method according to any one of claims 1 to 4, comprising a temperature acquisition module, a comparison module, a control module, a heating execution module, a cooling execution module, a heating module and a cooling module, wherein: the output end of the temperature acquisition module is electrically connected with the input ends of the comparison module and the control module, the output end of the comparison module is electrically connected with the input end of the control module, the output end of the control module is electrically connected with the input ends of the heating execution module and the cooling execution module, the output end of the heating execution module is electrically connected with the input end of the heating module, and the output end of the cooling execution module is electrically connected with the input end of the cooling module;

the temperature acquisition module is used for acquiring the temperature in an injection molding cavity of the injection mold in real time;

the comparison module is used for comparing the temperature and the time in the injection molding cavity of the injection mold, which are acquired by the temperature acquisition module in real time, with corresponding temperature values in a preset injection mold injection temperature and time relation curve, and judging the injection temperature in the injection mold at the moment;

the control module is used for receiving the temperature information acquired by the temperature acquisition module and the result information compared by the comparison module and sending a control signal to the heating execution module or the cooling execution module so as to achieve the purpose of temperature adjustment;

the heating execution module is used for adjusting the on-off time of the heating module according to the control signal of the control module;

the cooling execution module is used for adjusting the on-off time of the cooling module according to the control signal of the control module;

the heating module is used for heating an injection molding cavity of the injection mold;

the cooling module is used for cooling an injection molding cavity of the injection mold.

6. The control system of an injection mold temperature control method according to claim 5, characterized in that: the control module comprises a fuzzy logic control module and a PID controller.

7. The control system of an injection mold temperature control method according to claim 5, characterized in that: the system is characterized by further comprising a system setting module, wherein the output end of the system setting module is electrically connected with the input end of the control module.

8. The control system of an injection mold temperature control method according to claim 7, characterized in that: the system setting module comprises a temperature setting module, a parameter setting module and a mode setting module.

9. The control system of an injection mold temperature control method according to claim 7, characterized in that: the system is characterized by further comprising a human-computer interaction module, wherein the input end of the human-computer interaction module is electrically connected with the control module, and the output end of the human-computer interaction module is electrically connected with the system setting module and the control module.

10. The control system of an injection mold temperature control method according to claim 9, characterized in that: the man-machine interaction module comprises a keyboard and a display screen.

Technical Field

The invention relates to the technical field of injection molds, in particular to a method and a system for controlling the temperature of an injection mold.

Background

An injection mold is a tool for producing plastic products, and also for giving the plastic products complete structure and precise dimensions, and is generally suitable for thermoplastic thermoforming. The method comprises the steps of injecting molten plastic into a cavity of a mold through an injection molding machine by utilizing the hot melting principle of the thermoplastic plastic, cooling and shaping, opening the mold and taking out a plastic product.

Patent application No. CN201710822585.9 discloses an intelligent temperature control system for injection mold, the system includes: n detection areas on the lower cover plate; the n heating modules correspond to the n detection areas one by one and are used for heating the corresponding detection areas respectively; the temperature acquisition module is used for acquiring current temperature values T1 and T2 … Tn of the n detection areas; the control module is in communication connection with the n heating modules and the temperature acquisition module respectively; target temperature values R1 and R2 … Rn corresponding to the n detection areas one by one are preset in the control module, the control module obtains current temperature values T1 and T2 … Tn of the n detection areas through the temperature obtaining module, compares the T1 and T2 … Tn with the corresponding R1 and R2 … Rn, and controls the heating module to work according to a comparison result instruction.

The intelligent temperature control system of the injection mold can only heat and warm the injection mold, and partial molds are processed with products and need to be cooled and cooled, so that the application range of the intelligent temperature control system of the injection mold is limited.

Therefore, a method and a system for controlling the temperature of the injection mold are provided.

Disclosure of Invention

The present invention is directed to a method and a system for controlling temperature of an injection mold, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a temperature control method for an injection mold specifically comprises the following steps:

s1, presetting parameters in the relation curve between the injection temperature and the time of the injection mold on a temperature control system through a system setting module according to the injection type of the mold;

s2, arranging a temperature acquisition module in the injection mold, and acquiring the temperature in an injection molding cavity of the injection mold in real time through the temperature acquisition module;

s3, the temperature acquisition module transmits the acquired information to the comparison module, the comparison module compares the temperature and time in the injection molding cavity of the injection mold acquired by the temperature acquisition module in real time with the corresponding temperature value in the preset injection molding temperature and time relation curve of the injection mold, and the injection molding temperature in the injection mold at the moment is judged;

and S4, the comparison module transmits the comparison result information to the control module, and the control module sends a signal to the heating execution module or the cooling execution module according to the comparison result information to control the heating module or the cooling module to heat or cool the injection molding cavity of the injection mold.

Preferably, the step S1 includes:

s11, setting a set temperature value and error accuracy of the system through a temperature setting module;

s12, setting parameter codes of each module in operation through a parameter setting module;

and S13, setting the operation mode of the system through the mode setting module.

Preferably, in step S4, if the injection temperature in the injection mold is lower than a corresponding temperature value in a preset injection temperature and time relationship curve of the injection mold, the control module sends a control signal to the heating execution module, the heating execution module adjusts the on-off time of the heating module, and the heating module heats the injection cavity of the injection mold to raise the temperature.

Preferably, in step S4, if the injection temperature in the injection mold is higher than the corresponding temperature value in the relationship curve between the injection temperature and the time of the preset injection mold, the control module sends a control signal to the cooling execution module, the cooling execution module adjusts the on-off time of the cooling module, and the cooling module cools the injection mold cavity of the injection mold.

The invention also provides a control system of the injection mold temperature control method, which comprises a temperature acquisition module, a comparison module, a control module, a heating execution module, a cooling execution module, a heating module and a cooling module, wherein the output end of the temperature acquisition module is electrically connected with the input ends of the comparison module and the control module, the output end of the comparison module is electrically connected with the input end of the control module, the output end of the control module is electrically connected with the input ends of the heating execution module and the cooling execution module, the output end of the heating execution module is electrically connected with the input end of the heating module, and the output end of the cooling execution module is electrically connected with the input end of the cooling module;

the temperature acquisition module is used for acquiring the temperature in an injection molding cavity of the injection mold in real time;

the comparison module is used for comparing the temperature and the time in the injection molding cavity of the injection mold, which are acquired by the temperature acquisition module in real time, with corresponding temperature values in a preset injection mold injection temperature and time relation curve, and judging the injection temperature in the injection mold at the moment;

the control module is used for receiving the temperature information acquired by the temperature acquisition module and the result information compared by the comparison module and sending a control signal to the heating execution module or the cooling execution module so as to achieve the purpose of temperature adjustment;

the heating execution module is used for adjusting the on-off time of the heating module according to the control signal of the control module;

the cooling execution module is used for adjusting the on-off time of the cooling module according to the control signal of the control module;

the heating module is used for heating an injection molding cavity of the injection mold;

the cooling module is used for cooling an injection molding cavity of the injection mold.

Preferably, the control module comprises a fuzzy logic control module and a PID controller.

The fuzzy logic control module is used for sending and receiving signals to the man-machine interaction module; and the PID controller is used for sending a control signal to the heating execution module or the cooling execution module.

Preferably, the system also comprises a system setting module, and the output end of the system setting module is electrically connected with the input end of the control module.

The setting system setting module is used for setting system parameters.

Preferably, the system setting module comprises a temperature setting module, a parameter setting module and a mode setting module.

The set temperature setting module is used for setting the set temperature value and the error precision of the system; the parameter setting module is used for setting parameter codes when the modules run; the mode setting module is used for setting system operation modes, including a manual mode and an automatic mode.

Preferably, the system further comprises a human-computer interaction module, wherein the input end of the human-computer interaction module is electrically connected with the control module, and the output end of the human-computer interaction module is electrically connected with the system setting module and the control module.

The human-computer interaction module is used for realizing information interaction between a human and the control module and between the human and the system setting module.

Preferably, the human-computer interaction module comprises a keyboard and a display screen.

The setting keyboard is used for operating the system setting module and inputting effective signals; the display screen is used for displaying the set temperature value, the actual temperature value, the operation mode and the parameter information.

Compared with the prior art, the invention has the beneficial effects that: the invention presets parameters in the relation curve of injection molding temperature and time of the injection mold through a system setting module according to the technical regulation requirement, acquires the temperature in the injection molding cavity of the injection mold in real time through a temperature acquisition module, compares the temperature and the time in the injection molding cavity of the injection mold acquired in real time through the temperature acquisition module with the corresponding temperature value in the relation curve of injection molding temperature and time of the preset injection mold through a comparison module, judges the injection molding temperature in the injection mold at the moment, sends a signal to a heating execution module or a cooling execution module through a control module, controls the heating module or the cooling module to heat or cool the injection molding cavity of the injection mold, and keeps the temperature of the injection mold in a proper temperature range, thereby leading the temperature of a solution in the mold to be always in a standard range, improving the quality of injection molding products and reducing the rejection rate, thereby improving the production efficiency of enterprises.

Drawings

FIG. 1 is a flow chart of a method of temperature control of an injection mold according to the present invention;

FIG. 2 is a flowchart of step S1 according to the present invention;

FIG. 3 is a block diagram of a control system for the injection mold temperature control method of the present invention;

FIG. 4 is a block diagram of a control module according to the present invention;

FIG. 5 is a block diagram of a system configuration module according to the present invention;

FIG. 6 is a block diagram of a human-computer interaction module according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a temperature control method for an injection mold specifically comprises the following steps:

s1, presetting parameters in the relation curve between the injection temperature and the time of the injection mold on a temperature control system through a system setting module according to the injection type of the mold;

s2, arranging a temperature acquisition module in the injection mold, and acquiring the temperature in an injection molding cavity of the injection mold in real time through the temperature acquisition module;

s3, the temperature acquisition module transmits the acquired information to the comparison module, the comparison module compares the temperature and time in the injection molding cavity of the injection mold acquired by the temperature acquisition module in real time with the corresponding temperature value in the preset injection molding temperature and time relation curve of the injection mold, and the injection molding temperature in the injection mold at the moment is judged;

and S4, the comparison module transmits the comparison result information to the control module, and the control module sends a signal to the heating execution module or the cooling execution module according to the comparison result information to control the heating module or the cooling module to heat or cool the injection molding cavity of the injection mold.

Specifically, the step S1 includes:

s11, setting a set temperature value and error accuracy of the system through a temperature setting module;

s12, setting parameter codes of each module in operation through a parameter setting module;

and S13, setting the operation mode of the system through the mode setting module.

Specifically, in step S4, if the injection temperature in the injection mold is lower than the corresponding temperature value in the preset injection temperature and time relationship curve of the injection mold, the control module sends a control signal to the heating execution module, the on-off time of the heating module is adjusted by the heating execution module, and the injection mold cavity of the injection mold is heated by the heating module to increase the temperature.

Specifically, in step S4, if the injection temperature in the injection mold is higher than the corresponding temperature value in the preset injection temperature and time relationship curve of the injection mold, the control module sends a control signal to the cooling execution module, adjusts the on-off time of the cooling module through the cooling execution module, and cools the injection cavity of the injection mold through the cooling module.

The invention also provides a control system of the injection mold temperature control method, which comprises a temperature acquisition module, a comparison module, a control module, a heating execution module, a cooling execution module, a heating module and a cooling module, wherein the output end of the temperature acquisition module is electrically connected with the input ends of the comparison module and the control module, the output end of the comparison module is electrically connected with the input end of the control module, the output end of the control module is electrically connected with the input ends of the heating execution module and the cooling execution module, the output end of the heating execution module is electrically connected with the input end of the heating module, and the output end of the cooling execution module is electrically connected with the input end of the cooling module; the system comprises a control module, a system setting module and a control module, wherein the control module is used for controlling the operation of the control module; the system also comprises a human-computer interaction module, wherein the input end of the human-computer interaction module is electrically connected with the control module, and the output end of the human-computer interaction module is electrically connected with the system setting module and the control module;

the temperature acquisition module is used for acquiring the temperature in an injection molding cavity of the injection mold in real time, and can adopt a temperature sensor;

the comparison module is used for comparing the temperature and the time in the injection molding cavity of the injection mold, which are acquired by the temperature acquisition module in real time, with corresponding temperature values in a preset injection mold injection temperature and time relation curve, and judging the injection temperature in the injection mold at the moment, and the comparison module can adopt a difference comparator;

the control module is used for receiving the temperature information acquired by the temperature acquisition module and the result information compared by the comparison module and sending a control signal to the heating execution module or the cooling execution module so as to achieve the purpose of temperature adjustment; the control module comprises a fuzzy logic control module and a PID controller;

the heating execution module is used for adjusting the on-off time of the heating module according to the control signal of the control module;

the cooling execution module is used for adjusting the on-off time of the cooling module according to the control signal of the control module;

the heating module is used for heating an injection molding cavity of the injection mold;

the cooling module is used for cooling an injection molding cavity of the injection mold;

the system setting module is used for setting system parameters and comprises a temperature setting module, a parameter setting module and a mode setting module; the temperature setting module is used for setting a set temperature value and error precision of the system; the parameter setting module is used for setting parameter codes when the modules run; the mode setting module is used for setting system operation modes, including a manual mode and an automatic mode;

the human-computer interaction module is used for realizing information interaction between a human and the control module and between the human and the system setting module; the man-machine interaction module comprises a keyboard and a display screen.

In summary, compared with the prior art, the invention presets parameters in the relation curve of injection temperature and time of the injection mold through the system setting module according to the technical specification requirements, acquires the temperature in the injection cavity of the injection mold in real time through the temperature acquisition module, compares the temperature and time in the injection cavity of the injection mold acquired in real time through the temperature acquisition module with the corresponding temperature value in the relation curve of injection temperature and time of the preset injection mold through the comparison module, judges the injection temperature in the injection mold at the moment, sends a signal to the heating execution module or the cooling execution module through the control module, controls the heating module or the cooling module to heat or cool the injection cavity of the injection mold, keeps the temperature of the injection mold in a proper temperature range, and thus keeps the temperature of the solution in the mold in a standard range all the time, the quality of injection molding products is improved, and the rejection rate is reduced, so that the production efficiency of enterprises is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.